From a6a5580c4d90788d67a77c689d3ab22aa5eecfc3 Mon Sep 17 00:00:00 2001 From: Jeff Kirsher Date: Fri, 13 May 2011 22:20:35 -0700 Subject: enic: Move the Cisco driver Move the Cisco driver into drivers/net/ethernet/cisco/ and make the necessary Kconfig and Makefile changes. CC: Christian Benvenuti CC: Vasanthy Kolluri CC: Roopa Prabhu CC: David Wang Signed-off-by: Jeff Kirsher --- drivers/net/Kconfig | 6 - drivers/net/Makefile | 1 - drivers/net/enic/Makefile | 5 - drivers/net/enic/cq_desc.h | 80 - drivers/net/enic/cq_enet_desc.h | 185 -- drivers/net/enic/enic.h | 124 -- drivers/net/enic/enic_dev.c | 286 --- drivers/net/enic/enic_dev.h | 45 - drivers/net/enic/enic_main.c | 2513 ----------------------- drivers/net/enic/enic_pp.c | 264 --- drivers/net/enic/enic_pp.h | 27 - drivers/net/enic/enic_res.c | 384 ---- drivers/net/enic/enic_res.h | 148 -- drivers/net/enic/rq_enet_desc.h | 60 - drivers/net/enic/vnic_cq.c | 91 - drivers/net/enic/vnic_cq.h | 114 - drivers/net/enic/vnic_dev.c | 1003 --------- drivers/net/enic/vnic_dev.h | 133 -- drivers/net/enic/vnic_devcmd.h | 450 ---- drivers/net/enic/vnic_enet.h | 57 - drivers/net/enic/vnic_intr.c | 68 - drivers/net/enic/vnic_intr.h | 111 - drivers/net/enic/vnic_nic.h | 72 - drivers/net/enic/vnic_resource.h | 76 - drivers/net/enic/vnic_rq.c | 221 -- drivers/net/enic/vnic_rq.h | 209 -- drivers/net/enic/vnic_rss.h | 40 - drivers/net/enic/vnic_stats.h | 70 - drivers/net/enic/vnic_vic.c | 79 - drivers/net/enic/vnic_vic.h | 83 - drivers/net/enic/vnic_wq.c | 200 -- drivers/net/enic/vnic_wq.h | 165 -- drivers/net/enic/wq_enet_desc.h | 98 - drivers/net/ethernet/Kconfig | 1 + drivers/net/ethernet/Makefile | 1 + drivers/net/ethernet/cisco/Kconfig | 22 + drivers/net/ethernet/cisco/Makefile | 5 + drivers/net/ethernet/cisco/enic/Kconfig | 9 + drivers/net/ethernet/cisco/enic/Makefile | 5 + drivers/net/ethernet/cisco/enic/cq_desc.h | 80 + drivers/net/ethernet/cisco/enic/cq_enet_desc.h | 185 ++ drivers/net/ethernet/cisco/enic/enic.h | 124 ++ drivers/net/ethernet/cisco/enic/enic_dev.c | 286 +++ drivers/net/ethernet/cisco/enic/enic_dev.h | 45 + drivers/net/ethernet/cisco/enic/enic_main.c | 2513 +++++++++++++++++++++++ drivers/net/ethernet/cisco/enic/enic_pp.c | 264 +++ drivers/net/ethernet/cisco/enic/enic_pp.h | 27 + drivers/net/ethernet/cisco/enic/enic_res.c | 384 ++++ drivers/net/ethernet/cisco/enic/enic_res.h | 148 ++ drivers/net/ethernet/cisco/enic/rq_enet_desc.h | 60 + drivers/net/ethernet/cisco/enic/vnic_cq.c | 91 + drivers/net/ethernet/cisco/enic/vnic_cq.h | 114 + drivers/net/ethernet/cisco/enic/vnic_dev.c | 1003 +++++++++ drivers/net/ethernet/cisco/enic/vnic_dev.h | 133 ++ drivers/net/ethernet/cisco/enic/vnic_devcmd.h | 450 ++++ drivers/net/ethernet/cisco/enic/vnic_enet.h | 57 + drivers/net/ethernet/cisco/enic/vnic_intr.c | 68 + drivers/net/ethernet/cisco/enic/vnic_intr.h | 111 + drivers/net/ethernet/cisco/enic/vnic_nic.h | 72 + drivers/net/ethernet/cisco/enic/vnic_resource.h | 76 + drivers/net/ethernet/cisco/enic/vnic_rq.c | 221 ++ drivers/net/ethernet/cisco/enic/vnic_rq.h | 209 ++ drivers/net/ethernet/cisco/enic/vnic_rss.h | 40 + drivers/net/ethernet/cisco/enic/vnic_stats.h | 70 + drivers/net/ethernet/cisco/enic/vnic_vic.c | 79 + drivers/net/ethernet/cisco/enic/vnic_vic.h | 83 + drivers/net/ethernet/cisco/enic/vnic_wq.c | 200 ++ drivers/net/ethernet/cisco/enic/vnic_wq.h | 165 ++ drivers/net/ethernet/cisco/enic/wq_enet_desc.h | 98 + 69 files changed, 7499 insertions(+), 7468 deletions(-) delete mode 100644 drivers/net/enic/Makefile delete mode 100644 drivers/net/enic/cq_desc.h delete mode 100644 drivers/net/enic/cq_enet_desc.h delete mode 100644 drivers/net/enic/enic.h delete mode 100644 drivers/net/enic/enic_dev.c delete mode 100644 drivers/net/enic/enic_dev.h delete mode 100644 drivers/net/enic/enic_main.c delete mode 100644 drivers/net/enic/enic_pp.c delete mode 100644 drivers/net/enic/enic_pp.h delete mode 100644 drivers/net/enic/enic_res.c delete mode 100644 drivers/net/enic/enic_res.h delete mode 100644 drivers/net/enic/rq_enet_desc.h delete mode 100644 drivers/net/enic/vnic_cq.c delete mode 100644 drivers/net/enic/vnic_cq.h delete mode 100644 drivers/net/enic/vnic_dev.c delete mode 100644 drivers/net/enic/vnic_dev.h delete mode 100644 drivers/net/enic/vnic_devcmd.h delete mode 100644 drivers/net/enic/vnic_enet.h delete mode 100644 drivers/net/enic/vnic_intr.c delete mode 100644 drivers/net/enic/vnic_intr.h delete mode 100644 drivers/net/enic/vnic_nic.h delete mode 100644 drivers/net/enic/vnic_resource.h delete mode 100644 drivers/net/enic/vnic_rq.c delete mode 100644 drivers/net/enic/vnic_rq.h delete mode 100644 drivers/net/enic/vnic_rss.h delete mode 100644 drivers/net/enic/vnic_stats.h delete mode 100644 drivers/net/enic/vnic_vic.c delete mode 100644 drivers/net/enic/vnic_vic.h delete mode 100644 drivers/net/enic/vnic_wq.c delete mode 100644 drivers/net/enic/vnic_wq.h delete mode 100644 drivers/net/enic/wq_enet_desc.h create mode 100644 drivers/net/ethernet/cisco/Kconfig create mode 100644 drivers/net/ethernet/cisco/Makefile create mode 100644 drivers/net/ethernet/cisco/enic/Kconfig create mode 100644 drivers/net/ethernet/cisco/enic/Makefile create mode 100644 drivers/net/ethernet/cisco/enic/cq_desc.h create mode 100644 drivers/net/ethernet/cisco/enic/cq_enet_desc.h create mode 100644 drivers/net/ethernet/cisco/enic/enic.h create mode 100644 drivers/net/ethernet/cisco/enic/enic_dev.c create mode 100644 drivers/net/ethernet/cisco/enic/enic_dev.h create mode 100644 drivers/net/ethernet/cisco/enic/enic_main.c create mode 100644 drivers/net/ethernet/cisco/enic/enic_pp.c create mode 100644 drivers/net/ethernet/cisco/enic/enic_pp.h create mode 100644 drivers/net/ethernet/cisco/enic/enic_res.c create mode 100644 drivers/net/ethernet/cisco/enic/enic_res.h create mode 100644 drivers/net/ethernet/cisco/enic/rq_enet_desc.h create mode 100644 drivers/net/ethernet/cisco/enic/vnic_cq.c create mode 100644 drivers/net/ethernet/cisco/enic/vnic_cq.h create mode 100644 drivers/net/ethernet/cisco/enic/vnic_dev.c create mode 100644 drivers/net/ethernet/cisco/enic/vnic_dev.h create mode 100644 drivers/net/ethernet/cisco/enic/vnic_devcmd.h create mode 100644 drivers/net/ethernet/cisco/enic/vnic_enet.h create mode 100644 drivers/net/ethernet/cisco/enic/vnic_intr.c create mode 100644 drivers/net/ethernet/cisco/enic/vnic_intr.h create mode 100644 drivers/net/ethernet/cisco/enic/vnic_nic.h create mode 100644 drivers/net/ethernet/cisco/enic/vnic_resource.h create mode 100644 drivers/net/ethernet/cisco/enic/vnic_rq.c create mode 100644 drivers/net/ethernet/cisco/enic/vnic_rq.h create mode 100644 drivers/net/ethernet/cisco/enic/vnic_rss.h create mode 100644 drivers/net/ethernet/cisco/enic/vnic_stats.h create mode 100644 drivers/net/ethernet/cisco/enic/vnic_vic.c create mode 100644 drivers/net/ethernet/cisco/enic/vnic_vic.h create mode 100644 drivers/net/ethernet/cisco/enic/vnic_wq.c create mode 100644 drivers/net/ethernet/cisco/enic/vnic_wq.h create mode 100644 drivers/net/ethernet/cisco/enic/wq_enet_desc.h (limited to 'drivers') diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig index 116f7442e70..08ce2804106 100644 --- a/drivers/net/Kconfig +++ b/drivers/net/Kconfig @@ -1457,12 +1457,6 @@ if NETDEV_10000 config MDIO tristate -config ENIC - tristate "Cisco VIC Ethernet NIC Support" - depends on PCI && INET - help - This enables the support for the Cisco VIC Ethernet card. - config PASEMI_MAC tristate "PA Semi 1/10Gbit MAC" depends on PPC_PASEMI && PCI && INET diff --git a/drivers/net/Makefile b/drivers/net/Makefile index 54146ed625b..cf1d5a27a47 100644 --- a/drivers/net/Makefile +++ b/drivers/net/Makefile @@ -20,7 +20,6 @@ obj-$(CONFIG_ATL1C) += atl1c/ obj-$(CONFIG_GIANFAR) += gianfar_driver.o obj-$(CONFIG_PTP_1588_CLOCK_GIANFAR) += gianfar_ptp.o obj-$(CONFIG_TEHUTI) += tehuti.o -obj-$(CONFIG_ENIC) += enic/ obj-$(CONFIG_JME) += jme.o obj-$(CONFIG_VMXNET3) += vmxnet3/ diff --git a/drivers/net/enic/Makefile b/drivers/net/enic/Makefile deleted file mode 100644 index 9d4974bba24..00000000000 --- a/drivers/net/enic/Makefile +++ /dev/null @@ -1,5 +0,0 @@ -obj-$(CONFIG_ENIC) := enic.o - -enic-y := enic_main.o vnic_cq.o vnic_intr.o vnic_wq.o \ - enic_res.o enic_dev.o enic_pp.o vnic_dev.o vnic_rq.o vnic_vic.o - diff --git a/drivers/net/enic/cq_desc.h b/drivers/net/enic/cq_desc.h deleted file mode 100644 index d6dd1b4edf6..00000000000 --- a/drivers/net/enic/cq_desc.h +++ /dev/null @@ -1,80 +0,0 @@ -/* - * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. - * Copyright 2007 Nuova Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#ifndef _CQ_DESC_H_ -#define _CQ_DESC_H_ - -/* - * Completion queue descriptor types - */ -enum cq_desc_types { - CQ_DESC_TYPE_WQ_ENET = 0, - CQ_DESC_TYPE_DESC_COPY = 1, - CQ_DESC_TYPE_WQ_EXCH = 2, - CQ_DESC_TYPE_RQ_ENET = 3, - CQ_DESC_TYPE_RQ_FCP = 4, -}; - -/* Completion queue descriptor: 16B - * - * All completion queues have this basic layout. The - * type_specfic area is unique for each completion - * queue type. - */ -struct cq_desc { - __le16 completed_index; - __le16 q_number; - u8 type_specfic[11]; - u8 type_color; -}; - -#define CQ_DESC_TYPE_BITS 4 -#define CQ_DESC_TYPE_MASK ((1 << CQ_DESC_TYPE_BITS) - 1) -#define CQ_DESC_COLOR_MASK 1 -#define CQ_DESC_COLOR_SHIFT 7 -#define CQ_DESC_Q_NUM_BITS 10 -#define CQ_DESC_Q_NUM_MASK ((1 << CQ_DESC_Q_NUM_BITS) - 1) -#define CQ_DESC_COMP_NDX_BITS 12 -#define CQ_DESC_COMP_NDX_MASK ((1 << CQ_DESC_COMP_NDX_BITS) - 1) - -static inline void cq_desc_dec(const struct cq_desc *desc_arg, - u8 *type, u8 *color, u16 *q_number, u16 *completed_index) -{ - const struct cq_desc *desc = desc_arg; - const u8 type_color = desc->type_color; - - *color = (type_color >> CQ_DESC_COLOR_SHIFT) & CQ_DESC_COLOR_MASK; - - /* - * Make sure color bit is read from desc *before* other fields - * are read from desc. Hardware guarantees color bit is last - * bit (byte) written. Adding the rmb() prevents the compiler - * and/or CPU from reordering the reads which would potentially - * result in reading stale values. - */ - - rmb(); - - *type = type_color & CQ_DESC_TYPE_MASK; - *q_number = le16_to_cpu(desc->q_number) & CQ_DESC_Q_NUM_MASK; - *completed_index = le16_to_cpu(desc->completed_index) & - CQ_DESC_COMP_NDX_MASK; -} - -#endif /* _CQ_DESC_H_ */ diff --git a/drivers/net/enic/cq_enet_desc.h b/drivers/net/enic/cq_enet_desc.h deleted file mode 100644 index c2c0680a114..00000000000 --- a/drivers/net/enic/cq_enet_desc.h +++ /dev/null @@ -1,185 +0,0 @@ -/* - * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. - * Copyright 2007 Nuova Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#ifndef _CQ_ENET_DESC_H_ -#define _CQ_ENET_DESC_H_ - -#include "cq_desc.h" - -/* Ethernet completion queue descriptor: 16B */ -struct cq_enet_wq_desc { - __le16 completed_index; - __le16 q_number; - u8 reserved[11]; - u8 type_color; -}; - -static inline void cq_enet_wq_desc_dec(struct cq_enet_wq_desc *desc, - u8 *type, u8 *color, u16 *q_number, u16 *completed_index) -{ - cq_desc_dec((struct cq_desc *)desc, type, - color, q_number, completed_index); -} - -/* Completion queue descriptor: Ethernet receive queue, 16B */ -struct cq_enet_rq_desc { - __le16 completed_index_flags; - __le16 q_number_rss_type_flags; - __le32 rss_hash; - __le16 bytes_written_flags; - __le16 vlan; - __le16 checksum_fcoe; - u8 flags; - u8 type_color; -}; - -#define CQ_ENET_RQ_DESC_FLAGS_INGRESS_PORT (0x1 << 12) -#define CQ_ENET_RQ_DESC_FLAGS_FCOE (0x1 << 13) -#define CQ_ENET_RQ_DESC_FLAGS_EOP (0x1 << 14) -#define CQ_ENET_RQ_DESC_FLAGS_SOP (0x1 << 15) - -#define CQ_ENET_RQ_DESC_RSS_TYPE_BITS 4 -#define CQ_ENET_RQ_DESC_RSS_TYPE_MASK \ - ((1 << CQ_ENET_RQ_DESC_RSS_TYPE_BITS) - 1) -#define CQ_ENET_RQ_DESC_RSS_TYPE_NONE 0 -#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv4 1 -#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv4 2 -#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv6 3 -#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv6 4 -#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv6_EX 5 -#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv6_EX 6 - -#define CQ_ENET_RQ_DESC_FLAGS_CSUM_NOT_CALC (0x1 << 14) - -#define CQ_ENET_RQ_DESC_BYTES_WRITTEN_BITS 14 -#define CQ_ENET_RQ_DESC_BYTES_WRITTEN_MASK \ - ((1 << CQ_ENET_RQ_DESC_BYTES_WRITTEN_BITS) - 1) -#define CQ_ENET_RQ_DESC_FLAGS_TRUNCATED (0x1 << 14) -#define CQ_ENET_RQ_DESC_FLAGS_VLAN_STRIPPED (0x1 << 15) - -#define CQ_ENET_RQ_DESC_VLAN_TCI_VLAN_BITS 12 -#define CQ_ENET_RQ_DESC_VLAN_TCI_VLAN_MASK \ - ((1 << CQ_ENET_RQ_DESC_VLAN_TCI_VLAN_BITS) - 1) -#define CQ_ENET_RQ_DESC_VLAN_TCI_CFI_MASK (0x1 << 12) -#define CQ_ENET_RQ_DESC_VLAN_TCI_USER_PRIO_BITS 3 -#define CQ_ENET_RQ_DESC_VLAN_TCI_USER_PRIO_MASK \ - ((1 << CQ_ENET_RQ_DESC_VLAN_TCI_USER_PRIO_BITS) - 1) -#define CQ_ENET_RQ_DESC_VLAN_TCI_USER_PRIO_SHIFT 13 - -#define CQ_ENET_RQ_DESC_FCOE_SOF_BITS 8 -#define CQ_ENET_RQ_DESC_FCOE_SOF_MASK \ - ((1 << CQ_ENET_RQ_DESC_FCOE_SOF_BITS) - 1) -#define CQ_ENET_RQ_DESC_FCOE_EOF_BITS 8 -#define CQ_ENET_RQ_DESC_FCOE_EOF_MASK \ - ((1 << CQ_ENET_RQ_DESC_FCOE_EOF_BITS) - 1) -#define CQ_ENET_RQ_DESC_FCOE_EOF_SHIFT 8 - -#define CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK (0x1 << 0) -#define CQ_ENET_RQ_DESC_FCOE_FC_CRC_OK (0x1 << 0) -#define CQ_ENET_RQ_DESC_FLAGS_UDP (0x1 << 1) -#define CQ_ENET_RQ_DESC_FCOE_ENC_ERROR (0x1 << 1) -#define CQ_ENET_RQ_DESC_FLAGS_TCP (0x1 << 2) -#define CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK (0x1 << 3) -#define CQ_ENET_RQ_DESC_FLAGS_IPV6 (0x1 << 4) -#define CQ_ENET_RQ_DESC_FLAGS_IPV4 (0x1 << 5) -#define CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT (0x1 << 6) -#define CQ_ENET_RQ_DESC_FLAGS_FCS_OK (0x1 << 7) - -static inline void cq_enet_rq_desc_dec(struct cq_enet_rq_desc *desc, - u8 *type, u8 *color, u16 *q_number, u16 *completed_index, - u8 *ingress_port, u8 *fcoe, u8 *eop, u8 *sop, u8 *rss_type, - u8 *csum_not_calc, u32 *rss_hash, u16 *bytes_written, u8 *packet_error, - u8 *vlan_stripped, u16 *vlan_tci, u16 *checksum, u8 *fcoe_sof, - u8 *fcoe_fc_crc_ok, u8 *fcoe_enc_error, u8 *fcoe_eof, - u8 *tcp_udp_csum_ok, u8 *udp, u8 *tcp, u8 *ipv4_csum_ok, - u8 *ipv6, u8 *ipv4, u8 *ipv4_fragment, u8 *fcs_ok) -{ - u16 completed_index_flags; - u16 q_number_rss_type_flags; - u16 bytes_written_flags; - - cq_desc_dec((struct cq_desc *)desc, type, - color, q_number, completed_index); - - completed_index_flags = le16_to_cpu(desc->completed_index_flags); - q_number_rss_type_flags = - le16_to_cpu(desc->q_number_rss_type_flags); - bytes_written_flags = le16_to_cpu(desc->bytes_written_flags); - - *ingress_port = (completed_index_flags & - CQ_ENET_RQ_DESC_FLAGS_INGRESS_PORT) ? 1 : 0; - *fcoe = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_FCOE) ? - 1 : 0; - *eop = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_EOP) ? - 1 : 0; - *sop = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_SOP) ? - 1 : 0; - - *rss_type = (u8)((q_number_rss_type_flags >> CQ_DESC_Q_NUM_BITS) & - CQ_ENET_RQ_DESC_RSS_TYPE_MASK); - *csum_not_calc = (q_number_rss_type_flags & - CQ_ENET_RQ_DESC_FLAGS_CSUM_NOT_CALC) ? 1 : 0; - - *rss_hash = le32_to_cpu(desc->rss_hash); - - *bytes_written = bytes_written_flags & - CQ_ENET_RQ_DESC_BYTES_WRITTEN_MASK; - *packet_error = (bytes_written_flags & - CQ_ENET_RQ_DESC_FLAGS_TRUNCATED) ? 1 : 0; - *vlan_stripped = (bytes_written_flags & - CQ_ENET_RQ_DESC_FLAGS_VLAN_STRIPPED) ? 1 : 0; - - /* - * Tag Control Information(16) = user_priority(3) + cfi(1) + vlan(12) - */ - *vlan_tci = le16_to_cpu(desc->vlan); - - if (*fcoe) { - *fcoe_sof = (u8)(le16_to_cpu(desc->checksum_fcoe) & - CQ_ENET_RQ_DESC_FCOE_SOF_MASK); - *fcoe_fc_crc_ok = (desc->flags & - CQ_ENET_RQ_DESC_FCOE_FC_CRC_OK) ? 1 : 0; - *fcoe_enc_error = (desc->flags & - CQ_ENET_RQ_DESC_FCOE_ENC_ERROR) ? 1 : 0; - *fcoe_eof = (u8)((desc->checksum_fcoe >> - CQ_ENET_RQ_DESC_FCOE_EOF_SHIFT) & - CQ_ENET_RQ_DESC_FCOE_EOF_MASK); - *checksum = 0; - } else { - *fcoe_sof = 0; - *fcoe_fc_crc_ok = 0; - *fcoe_enc_error = 0; - *fcoe_eof = 0; - *checksum = le16_to_cpu(desc->checksum_fcoe); - } - - *tcp_udp_csum_ok = - (desc->flags & CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK) ? 1 : 0; - *udp = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_UDP) ? 1 : 0; - *tcp = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_TCP) ? 1 : 0; - *ipv4_csum_ok = - (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK) ? 1 : 0; - *ipv6 = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV6) ? 1 : 0; - *ipv4 = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4) ? 1 : 0; - *ipv4_fragment = - (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT) ? 1 : 0; - *fcs_ok = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_FCS_OK) ? 1 : 0; -} - -#endif /* _CQ_ENET_DESC_H_ */ diff --git a/drivers/net/enic/enic.h b/drivers/net/enic/enic.h deleted file mode 100644 index ce76d9a8ca6..00000000000 --- a/drivers/net/enic/enic.h +++ /dev/null @@ -1,124 +0,0 @@ -/* - * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. - * Copyright 2007 Nuova Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#ifndef _ENIC_H_ -#define _ENIC_H_ - -#include "vnic_enet.h" -#include "vnic_dev.h" -#include "vnic_wq.h" -#include "vnic_rq.h" -#include "vnic_cq.h" -#include "vnic_intr.h" -#include "vnic_stats.h" -#include "vnic_nic.h" -#include "vnic_rss.h" - -#define DRV_NAME "enic" -#define DRV_DESCRIPTION "Cisco VIC Ethernet NIC Driver" -#define DRV_VERSION "2.1.1.24" -#define DRV_COPYRIGHT "Copyright 2008-2011 Cisco Systems, Inc" - -#define ENIC_BARS_MAX 6 - -#define ENIC_WQ_MAX 1 -#define ENIC_RQ_MAX 1 -#define ENIC_CQ_MAX (ENIC_WQ_MAX + ENIC_RQ_MAX) -#define ENIC_INTR_MAX (ENIC_CQ_MAX + 2) - -struct enic_msix_entry { - int requested; - char devname[IFNAMSIZ]; - irqreturn_t (*isr)(int, void *); - void *devid; -}; - -#define ENIC_PORT_REQUEST_APPLIED (1 << 0) -#define ENIC_SET_REQUEST (1 << 1) -#define ENIC_SET_NAME (1 << 2) -#define ENIC_SET_INSTANCE (1 << 3) -#define ENIC_SET_HOST (1 << 4) - -struct enic_port_profile { - u32 set; - u8 request; - char name[PORT_PROFILE_MAX]; - u8 instance_uuid[PORT_UUID_MAX]; - u8 host_uuid[PORT_UUID_MAX]; - u8 vf_mac[ETH_ALEN]; - u8 mac_addr[ETH_ALEN]; -}; - -/* Per-instance private data structure */ -struct enic { - struct net_device *netdev; - struct pci_dev *pdev; - struct vnic_enet_config config; - struct vnic_dev_bar bar[ENIC_BARS_MAX]; - struct vnic_dev *vdev; - struct timer_list notify_timer; - struct work_struct reset; - struct work_struct change_mtu_work; - struct msix_entry msix_entry[ENIC_INTR_MAX]; - struct enic_msix_entry msix[ENIC_INTR_MAX]; - u32 msg_enable; - spinlock_t devcmd_lock; - u8 mac_addr[ETH_ALEN]; - u8 mc_addr[ENIC_MULTICAST_PERFECT_FILTERS][ETH_ALEN]; - u8 uc_addr[ENIC_UNICAST_PERFECT_FILTERS][ETH_ALEN]; - unsigned int flags; - unsigned int mc_count; - unsigned int uc_count; - u32 port_mtu; - u32 rx_coalesce_usecs; - u32 tx_coalesce_usecs; - struct enic_port_profile pp; - - /* work queue cache line section */ - ____cacheline_aligned struct vnic_wq wq[ENIC_WQ_MAX]; - spinlock_t wq_lock[ENIC_WQ_MAX]; - unsigned int wq_count; - u16 loop_enable; - u16 loop_tag; - - /* receive queue cache line section */ - ____cacheline_aligned struct vnic_rq rq[ENIC_RQ_MAX]; - unsigned int rq_count; - u64 rq_truncated_pkts; - u64 rq_bad_fcs; - struct napi_struct napi[ENIC_RQ_MAX]; - - /* interrupt resource cache line section */ - ____cacheline_aligned struct vnic_intr intr[ENIC_INTR_MAX]; - unsigned int intr_count; - u32 __iomem *legacy_pba; /* memory-mapped */ - - /* completion queue cache line section */ - ____cacheline_aligned struct vnic_cq cq[ENIC_CQ_MAX]; - unsigned int cq_count; -}; - -static inline struct device *enic_get_dev(struct enic *enic) -{ - return &(enic->pdev->dev); -} - -void enic_reset_addr_lists(struct enic *enic); - -#endif /* _ENIC_H_ */ diff --git a/drivers/net/enic/enic_dev.c b/drivers/net/enic/enic_dev.c deleted file mode 100644 index fd6247b3c0e..00000000000 --- a/drivers/net/enic/enic_dev.c +++ /dev/null @@ -1,286 +0,0 @@ -/* - * Copyright 2011 Cisco Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#include -#include - -#include "vnic_dev.h" -#include "vnic_vic.h" -#include "enic_res.h" -#include "enic.h" -#include "enic_dev.h" - -int enic_dev_fw_info(struct enic *enic, struct vnic_devcmd_fw_info **fw_info) -{ - int err; - - spin_lock(&enic->devcmd_lock); - err = vnic_dev_fw_info(enic->vdev, fw_info); - spin_unlock(&enic->devcmd_lock); - - return err; -} - -int enic_dev_stats_dump(struct enic *enic, struct vnic_stats **vstats) -{ - int err; - - spin_lock(&enic->devcmd_lock); - err = vnic_dev_stats_dump(enic->vdev, vstats); - spin_unlock(&enic->devcmd_lock); - - return err; -} - -int enic_dev_add_station_addr(struct enic *enic) -{ - int err; - - if (!is_valid_ether_addr(enic->netdev->dev_addr)) - return -EADDRNOTAVAIL; - - spin_lock(&enic->devcmd_lock); - err = vnic_dev_add_addr(enic->vdev, enic->netdev->dev_addr); - spin_unlock(&enic->devcmd_lock); - - return err; -} - -int enic_dev_del_station_addr(struct enic *enic) -{ - int err; - - if (!is_valid_ether_addr(enic->netdev->dev_addr)) - return -EADDRNOTAVAIL; - - spin_lock(&enic->devcmd_lock); - err = vnic_dev_del_addr(enic->vdev, enic->netdev->dev_addr); - spin_unlock(&enic->devcmd_lock); - - return err; -} - -int enic_dev_packet_filter(struct enic *enic, int directed, int multicast, - int broadcast, int promisc, int allmulti) -{ - int err; - - spin_lock(&enic->devcmd_lock); - err = vnic_dev_packet_filter(enic->vdev, directed, - multicast, broadcast, promisc, allmulti); - spin_unlock(&enic->devcmd_lock); - - return err; -} - -int enic_dev_add_addr(struct enic *enic, u8 *addr) -{ - int err; - - spin_lock(&enic->devcmd_lock); - err = vnic_dev_add_addr(enic->vdev, addr); - spin_unlock(&enic->devcmd_lock); - - return err; -} - -int enic_dev_del_addr(struct enic *enic, u8 *addr) -{ - int err; - - spin_lock(&enic->devcmd_lock); - err = vnic_dev_del_addr(enic->vdev, addr); - spin_unlock(&enic->devcmd_lock); - - return err; -} - -int enic_dev_notify_unset(struct enic *enic) -{ - int err; - - spin_lock(&enic->devcmd_lock); - err = vnic_dev_notify_unset(enic->vdev); - spin_unlock(&enic->devcmd_lock); - - return err; -} - -int enic_dev_hang_notify(struct enic *enic) -{ - int err; - - spin_lock(&enic->devcmd_lock); - err = vnic_dev_hang_notify(enic->vdev); - spin_unlock(&enic->devcmd_lock); - - return err; -} - -int enic_dev_set_ig_vlan_rewrite_mode(struct enic *enic) -{ - int err; - - spin_lock(&enic->devcmd_lock); - err = vnic_dev_set_ig_vlan_rewrite_mode(enic->vdev, - IG_VLAN_REWRITE_MODE_PRIORITY_TAG_DEFAULT_VLAN); - spin_unlock(&enic->devcmd_lock); - - return err; -} - -int enic_dev_enable(struct enic *enic) -{ - int err; - - spin_lock(&enic->devcmd_lock); - err = vnic_dev_enable_wait(enic->vdev); - spin_unlock(&enic->devcmd_lock); - - return err; -} - -int enic_dev_disable(struct enic *enic) -{ - int err; - - spin_lock(&enic->devcmd_lock); - err = vnic_dev_disable(enic->vdev); - spin_unlock(&enic->devcmd_lock); - - return err; -} - -int enic_dev_intr_coal_timer_info(struct enic *enic) -{ - int err; - - spin_lock(&enic->devcmd_lock); - err = vnic_dev_intr_coal_timer_info(enic->vdev); - spin_unlock(&enic->devcmd_lock); - - return err; -} - -int enic_vnic_dev_deinit(struct enic *enic) -{ - int err; - - spin_lock(&enic->devcmd_lock); - err = vnic_dev_deinit(enic->vdev); - spin_unlock(&enic->devcmd_lock); - - return err; -} - -int enic_dev_init_prov2(struct enic *enic, struct vic_provinfo *vp) -{ - int err; - - spin_lock(&enic->devcmd_lock); - err = vnic_dev_init_prov2(enic->vdev, - (u8 *)vp, vic_provinfo_size(vp)); - spin_unlock(&enic->devcmd_lock); - - return err; -} - -int enic_dev_deinit_done(struct enic *enic, int *status) -{ - int err; - - spin_lock(&enic->devcmd_lock); - err = vnic_dev_deinit_done(enic->vdev, status); - spin_unlock(&enic->devcmd_lock); - - return err; -} - -/* rtnl lock is held */ -void enic_vlan_rx_add_vid(struct net_device *netdev, u16 vid) -{ - struct enic *enic = netdev_priv(netdev); - - spin_lock(&enic->devcmd_lock); - enic_add_vlan(enic, vid); - spin_unlock(&enic->devcmd_lock); -} - -/* rtnl lock is held */ -void enic_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) -{ - struct enic *enic = netdev_priv(netdev); - - spin_lock(&enic->devcmd_lock); - enic_del_vlan(enic, vid); - spin_unlock(&enic->devcmd_lock); -} - -int enic_dev_enable2(struct enic *enic, int active) -{ - int err; - - spin_lock(&enic->devcmd_lock); - err = vnic_dev_enable2(enic->vdev, active); - spin_unlock(&enic->devcmd_lock); - - return err; -} - -int enic_dev_enable2_done(struct enic *enic, int *status) -{ - int err; - - spin_lock(&enic->devcmd_lock); - err = vnic_dev_enable2_done(enic->vdev, status); - spin_unlock(&enic->devcmd_lock); - - return err; -} - -int enic_dev_status_to_errno(int devcmd_status) -{ - switch (devcmd_status) { - case ERR_SUCCESS: - return 0; - case ERR_EINVAL: - return -EINVAL; - case ERR_EFAULT: - return -EFAULT; - case ERR_EPERM: - return -EPERM; - case ERR_EBUSY: - return -EBUSY; - case ERR_ECMDUNKNOWN: - case ERR_ENOTSUPPORTED: - return -EOPNOTSUPP; - case ERR_EBADSTATE: - return -EINVAL; - case ERR_ENOMEM: - return -ENOMEM; - case ERR_ETIMEDOUT: - return -ETIMEDOUT; - case ERR_ELINKDOWN: - return -ENETDOWN; - case ERR_EINPROGRESS: - return -EINPROGRESS; - case ERR_EMAXRES: - default: - return (devcmd_status < 0) ? devcmd_status : -1; - } -} diff --git a/drivers/net/enic/enic_dev.h b/drivers/net/enic/enic_dev.h deleted file mode 100644 index ff8e87fdfc1..00000000000 --- a/drivers/net/enic/enic_dev.h +++ /dev/null @@ -1,45 +0,0 @@ -/* - * Copyright 2011 Cisco Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#ifndef _ENIC_DEV_H_ -#define _ENIC_DEV_H_ - -int enic_dev_fw_info(struct enic *enic, struct vnic_devcmd_fw_info **fw_info); -int enic_dev_stats_dump(struct enic *enic, struct vnic_stats **vstats); -int enic_dev_add_station_addr(struct enic *enic); -int enic_dev_del_station_addr(struct enic *enic); -int enic_dev_packet_filter(struct enic *enic, int directed, int multicast, - int broadcast, int promisc, int allmulti); -int enic_dev_add_addr(struct enic *enic, u8 *addr); -int enic_dev_del_addr(struct enic *enic, u8 *addr); -void enic_vlan_rx_add_vid(struct net_device *netdev, u16 vid); -void enic_vlan_rx_kill_vid(struct net_device *netdev, u16 vid); -int enic_dev_notify_unset(struct enic *enic); -int enic_dev_hang_notify(struct enic *enic); -int enic_dev_set_ig_vlan_rewrite_mode(struct enic *enic); -int enic_dev_enable(struct enic *enic); -int enic_dev_disable(struct enic *enic); -int enic_dev_intr_coal_timer_info(struct enic *enic); -int enic_vnic_dev_deinit(struct enic *enic); -int enic_dev_init_prov2(struct enic *enic, struct vic_provinfo *vp); -int enic_dev_deinit_done(struct enic *enic, int *status); -int enic_dev_enable2(struct enic *enic, int arg); -int enic_dev_enable2_done(struct enic *enic, int *status); -int enic_dev_status_to_errno(int devcmd_status); - -#endif /* _ENIC_DEV_H_ */ diff --git a/drivers/net/enic/enic_main.c b/drivers/net/enic/enic_main.c deleted file mode 100644 index 67a27cd304d..00000000000 --- a/drivers/net/enic/enic_main.c +++ /dev/null @@ -1,2513 +0,0 @@ -/* - * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. - * Copyright 2007 Nuova Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "cq_enet_desc.h" -#include "vnic_dev.h" -#include "vnic_intr.h" -#include "vnic_stats.h" -#include "vnic_vic.h" -#include "enic_res.h" -#include "enic.h" -#include "enic_dev.h" -#include "enic_pp.h" - -#define ENIC_NOTIFY_TIMER_PERIOD (2 * HZ) -#define WQ_ENET_MAX_DESC_LEN (1 << WQ_ENET_LEN_BITS) -#define MAX_TSO (1 << 16) -#define ENIC_DESC_MAX_SPLITS (MAX_TSO / WQ_ENET_MAX_DESC_LEN + 1) - -#define PCI_DEVICE_ID_CISCO_VIC_ENET 0x0043 /* ethernet vnic */ -#define PCI_DEVICE_ID_CISCO_VIC_ENET_DYN 0x0044 /* enet dynamic vnic */ - -/* Supported devices */ -static DEFINE_PCI_DEVICE_TABLE(enic_id_table) = { - { PCI_VDEVICE(CISCO, PCI_DEVICE_ID_CISCO_VIC_ENET) }, - { PCI_VDEVICE(CISCO, PCI_DEVICE_ID_CISCO_VIC_ENET_DYN) }, - { 0, } /* end of table */ -}; - -MODULE_DESCRIPTION(DRV_DESCRIPTION); -MODULE_AUTHOR("Scott Feldman "); -MODULE_LICENSE("GPL"); -MODULE_VERSION(DRV_VERSION); -MODULE_DEVICE_TABLE(pci, enic_id_table); - -struct enic_stat { - char name[ETH_GSTRING_LEN]; - unsigned int offset; -}; - -#define ENIC_TX_STAT(stat) \ - { .name = #stat, .offset = offsetof(struct vnic_tx_stats, stat) / 8 } -#define ENIC_RX_STAT(stat) \ - { .name = #stat, .offset = offsetof(struct vnic_rx_stats, stat) / 8 } - -static const struct enic_stat enic_tx_stats[] = { - ENIC_TX_STAT(tx_frames_ok), - ENIC_TX_STAT(tx_unicast_frames_ok), - ENIC_TX_STAT(tx_multicast_frames_ok), - ENIC_TX_STAT(tx_broadcast_frames_ok), - ENIC_TX_STAT(tx_bytes_ok), - ENIC_TX_STAT(tx_unicast_bytes_ok), - ENIC_TX_STAT(tx_multicast_bytes_ok), - ENIC_TX_STAT(tx_broadcast_bytes_ok), - ENIC_TX_STAT(tx_drops), - ENIC_TX_STAT(tx_errors), - ENIC_TX_STAT(tx_tso), -}; - -static const struct enic_stat enic_rx_stats[] = { - ENIC_RX_STAT(rx_frames_ok), - ENIC_RX_STAT(rx_frames_total), - ENIC_RX_STAT(rx_unicast_frames_ok), - ENIC_RX_STAT(rx_multicast_frames_ok), - ENIC_RX_STAT(rx_broadcast_frames_ok), - ENIC_RX_STAT(rx_bytes_ok), - ENIC_RX_STAT(rx_unicast_bytes_ok), - ENIC_RX_STAT(rx_multicast_bytes_ok), - ENIC_RX_STAT(rx_broadcast_bytes_ok), - ENIC_RX_STAT(rx_drop), - ENIC_RX_STAT(rx_no_bufs), - ENIC_RX_STAT(rx_errors), - ENIC_RX_STAT(rx_rss), - ENIC_RX_STAT(rx_crc_errors), - ENIC_RX_STAT(rx_frames_64), - ENIC_RX_STAT(rx_frames_127), - ENIC_RX_STAT(rx_frames_255), - ENIC_RX_STAT(rx_frames_511), - ENIC_RX_STAT(rx_frames_1023), - ENIC_RX_STAT(rx_frames_1518), - ENIC_RX_STAT(rx_frames_to_max), -}; - -static const unsigned int enic_n_tx_stats = ARRAY_SIZE(enic_tx_stats); -static const unsigned int enic_n_rx_stats = ARRAY_SIZE(enic_rx_stats); - -static int enic_is_dynamic(struct enic *enic) -{ - return enic->pdev->device == PCI_DEVICE_ID_CISCO_VIC_ENET_DYN; -} - -static inline unsigned int enic_cq_rq(struct enic *enic, unsigned int rq) -{ - return rq; -} - -static inline unsigned int enic_cq_wq(struct enic *enic, unsigned int wq) -{ - return enic->rq_count + wq; -} - -static inline unsigned int enic_legacy_io_intr(void) -{ - return 0; -} - -static inline unsigned int enic_legacy_err_intr(void) -{ - return 1; -} - -static inline unsigned int enic_legacy_notify_intr(void) -{ - return 2; -} - -static inline unsigned int enic_msix_rq_intr(struct enic *enic, unsigned int rq) -{ - return enic->cq[enic_cq_rq(enic, rq)].interrupt_offset; -} - -static inline unsigned int enic_msix_wq_intr(struct enic *enic, unsigned int wq) -{ - return enic->cq[enic_cq_wq(enic, wq)].interrupt_offset; -} - -static inline unsigned int enic_msix_err_intr(struct enic *enic) -{ - return enic->rq_count + enic->wq_count; -} - -static inline unsigned int enic_msix_notify_intr(struct enic *enic) -{ - return enic->rq_count + enic->wq_count + 1; -} - -static int enic_get_settings(struct net_device *netdev, - struct ethtool_cmd *ecmd) -{ - struct enic *enic = netdev_priv(netdev); - - ecmd->supported = (SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE); - ecmd->advertising = (ADVERTISED_10000baseT_Full | ADVERTISED_FIBRE); - ecmd->port = PORT_FIBRE; - ecmd->transceiver = XCVR_EXTERNAL; - - if (netif_carrier_ok(netdev)) { - ethtool_cmd_speed_set(ecmd, vnic_dev_port_speed(enic->vdev)); - ecmd->duplex = DUPLEX_FULL; - } else { - ethtool_cmd_speed_set(ecmd, -1); - ecmd->duplex = -1; - } - - ecmd->autoneg = AUTONEG_DISABLE; - - return 0; -} - -static void enic_get_drvinfo(struct net_device *netdev, - struct ethtool_drvinfo *drvinfo) -{ - struct enic *enic = netdev_priv(netdev); - struct vnic_devcmd_fw_info *fw_info; - - enic_dev_fw_info(enic, &fw_info); - - strncpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver)); - strncpy(drvinfo->version, DRV_VERSION, sizeof(drvinfo->version)); - strncpy(drvinfo->fw_version, fw_info->fw_version, - sizeof(drvinfo->fw_version)); - strncpy(drvinfo->bus_info, pci_name(enic->pdev), - sizeof(drvinfo->bus_info)); -} - -static void enic_get_strings(struct net_device *netdev, u32 stringset, u8 *data) -{ - unsigned int i; - - switch (stringset) { - case ETH_SS_STATS: - for (i = 0; i < enic_n_tx_stats; i++) { - memcpy(data, enic_tx_stats[i].name, ETH_GSTRING_LEN); - data += ETH_GSTRING_LEN; - } - for (i = 0; i < enic_n_rx_stats; i++) { - memcpy(data, enic_rx_stats[i].name, ETH_GSTRING_LEN); - data += ETH_GSTRING_LEN; - } - break; - } -} - -static int enic_get_sset_count(struct net_device *netdev, int sset) -{ - switch (sset) { - case ETH_SS_STATS: - return enic_n_tx_stats + enic_n_rx_stats; - default: - return -EOPNOTSUPP; - } -} - -static void enic_get_ethtool_stats(struct net_device *netdev, - struct ethtool_stats *stats, u64 *data) -{ - struct enic *enic = netdev_priv(netdev); - struct vnic_stats *vstats; - unsigned int i; - - enic_dev_stats_dump(enic, &vstats); - - for (i = 0; i < enic_n_tx_stats; i++) - *(data++) = ((u64 *)&vstats->tx)[enic_tx_stats[i].offset]; - for (i = 0; i < enic_n_rx_stats; i++) - *(data++) = ((u64 *)&vstats->rx)[enic_rx_stats[i].offset]; -} - -static u32 enic_get_msglevel(struct net_device *netdev) -{ - struct enic *enic = netdev_priv(netdev); - return enic->msg_enable; -} - -static void enic_set_msglevel(struct net_device *netdev, u32 value) -{ - struct enic *enic = netdev_priv(netdev); - enic->msg_enable = value; -} - -static int enic_get_coalesce(struct net_device *netdev, - struct ethtool_coalesce *ecmd) -{ - struct enic *enic = netdev_priv(netdev); - - ecmd->tx_coalesce_usecs = enic->tx_coalesce_usecs; - ecmd->rx_coalesce_usecs = enic->rx_coalesce_usecs; - - return 0; -} - -static int enic_set_coalesce(struct net_device *netdev, - struct ethtool_coalesce *ecmd) -{ - struct enic *enic = netdev_priv(netdev); - u32 tx_coalesce_usecs; - u32 rx_coalesce_usecs; - unsigned int i, intr; - - tx_coalesce_usecs = min_t(u32, ecmd->tx_coalesce_usecs, - vnic_dev_get_intr_coal_timer_max(enic->vdev)); - rx_coalesce_usecs = min_t(u32, ecmd->rx_coalesce_usecs, - vnic_dev_get_intr_coal_timer_max(enic->vdev)); - - switch (vnic_dev_get_intr_mode(enic->vdev)) { - case VNIC_DEV_INTR_MODE_INTX: - if (tx_coalesce_usecs != rx_coalesce_usecs) - return -EINVAL; - - intr = enic_legacy_io_intr(); - vnic_intr_coalescing_timer_set(&enic->intr[intr], - tx_coalesce_usecs); - break; - case VNIC_DEV_INTR_MODE_MSI: - if (tx_coalesce_usecs != rx_coalesce_usecs) - return -EINVAL; - - vnic_intr_coalescing_timer_set(&enic->intr[0], - tx_coalesce_usecs); - break; - case VNIC_DEV_INTR_MODE_MSIX: - for (i = 0; i < enic->wq_count; i++) { - intr = enic_msix_wq_intr(enic, i); - vnic_intr_coalescing_timer_set(&enic->intr[intr], - tx_coalesce_usecs); - } - - for (i = 0; i < enic->rq_count; i++) { - intr = enic_msix_rq_intr(enic, i); - vnic_intr_coalescing_timer_set(&enic->intr[intr], - rx_coalesce_usecs); - } - - break; - default: - break; - } - - enic->tx_coalesce_usecs = tx_coalesce_usecs; - enic->rx_coalesce_usecs = rx_coalesce_usecs; - - return 0; -} - -static const struct ethtool_ops enic_ethtool_ops = { - .get_settings = enic_get_settings, - .get_drvinfo = enic_get_drvinfo, - .get_msglevel = enic_get_msglevel, - .set_msglevel = enic_set_msglevel, - .get_link = ethtool_op_get_link, - .get_strings = enic_get_strings, - .get_sset_count = enic_get_sset_count, - .get_ethtool_stats = enic_get_ethtool_stats, - .get_coalesce = enic_get_coalesce, - .set_coalesce = enic_set_coalesce, -}; - -static void enic_free_wq_buf(struct vnic_wq *wq, struct vnic_wq_buf *buf) -{ - struct enic *enic = vnic_dev_priv(wq->vdev); - - if (buf->sop) - pci_unmap_single(enic->pdev, buf->dma_addr, - buf->len, PCI_DMA_TODEVICE); - else - pci_unmap_page(enic->pdev, buf->dma_addr, - buf->len, PCI_DMA_TODEVICE); - - if (buf->os_buf) - dev_kfree_skb_any(buf->os_buf); -} - -static void enic_wq_free_buf(struct vnic_wq *wq, - struct cq_desc *cq_desc, struct vnic_wq_buf *buf, void *opaque) -{ - enic_free_wq_buf(wq, buf); -} - -static int enic_wq_service(struct vnic_dev *vdev, struct cq_desc *cq_desc, - u8 type, u16 q_number, u16 completed_index, void *opaque) -{ - struct enic *enic = vnic_dev_priv(vdev); - - spin_lock(&enic->wq_lock[q_number]); - - vnic_wq_service(&enic->wq[q_number], cq_desc, - completed_index, enic_wq_free_buf, - opaque); - - if (netif_queue_stopped(enic->netdev) && - vnic_wq_desc_avail(&enic->wq[q_number]) >= - (MAX_SKB_FRAGS + ENIC_DESC_MAX_SPLITS)) - netif_wake_queue(enic->netdev); - - spin_unlock(&enic->wq_lock[q_number]); - - return 0; -} - -static void enic_log_q_error(struct enic *enic) -{ - unsigned int i; - u32 error_status; - - for (i = 0; i < enic->wq_count; i++) { - error_status = vnic_wq_error_status(&enic->wq[i]); - if (error_status) - netdev_err(enic->netdev, "WQ[%d] error_status %d\n", - i, error_status); - } - - for (i = 0; i < enic->rq_count; i++) { - error_status = vnic_rq_error_status(&enic->rq[i]); - if (error_status) - netdev_err(enic->netdev, "RQ[%d] error_status %d\n", - i, error_status); - } -} - -static void enic_msglvl_check(struct enic *enic) -{ - u32 msg_enable = vnic_dev_msg_lvl(enic->vdev); - - if (msg_enable != enic->msg_enable) { - netdev_info(enic->netdev, "msg lvl changed from 0x%x to 0x%x\n", - enic->msg_enable, msg_enable); - enic->msg_enable = msg_enable; - } -} - -static void enic_mtu_check(struct enic *enic) -{ - u32 mtu = vnic_dev_mtu(enic->vdev); - struct net_device *netdev = enic->netdev; - - if (mtu && mtu != enic->port_mtu) { - enic->port_mtu = mtu; - if (enic_is_dynamic(enic)) { - mtu = max_t(int, ENIC_MIN_MTU, - min_t(int, ENIC_MAX_MTU, mtu)); - if (mtu != netdev->mtu) - schedule_work(&enic->change_mtu_work); - } else { - if (mtu < netdev->mtu) - netdev_warn(netdev, - "interface MTU (%d) set higher " - "than switch port MTU (%d)\n", - netdev->mtu, mtu); - } - } -} - -static void enic_link_check(struct enic *enic) -{ - int link_status = vnic_dev_link_status(enic->vdev); - int carrier_ok = netif_carrier_ok(enic->netdev); - - if (link_status && !carrier_ok) { - netdev_info(enic->netdev, "Link UP\n"); - netif_carrier_on(enic->netdev); - } else if (!link_status && carrier_ok) { - netdev_info(enic->netdev, "Link DOWN\n"); - netif_carrier_off(enic->netdev); - } -} - -static void enic_notify_check(struct enic *enic) -{ - enic_msglvl_check(enic); - enic_mtu_check(enic); - enic_link_check(enic); -} - -#define ENIC_TEST_INTR(pba, i) (pba & (1 << i)) - -static irqreturn_t enic_isr_legacy(int irq, void *data) -{ - struct net_device *netdev = data; - struct enic *enic = netdev_priv(netdev); - unsigned int io_intr = enic_legacy_io_intr(); - unsigned int err_intr = enic_legacy_err_intr(); - unsigned int notify_intr = enic_legacy_notify_intr(); - u32 pba; - - vnic_intr_mask(&enic->intr[io_intr]); - - pba = vnic_intr_legacy_pba(enic->legacy_pba); - if (!pba) { - vnic_intr_unmask(&enic->intr[io_intr]); - return IRQ_NONE; /* not our interrupt */ - } - - if (ENIC_TEST_INTR(pba, notify_intr)) { - vnic_intr_return_all_credits(&enic->intr[notify_intr]); - enic_notify_check(enic); - } - - if (ENIC_TEST_INTR(pba, err_intr)) { - vnic_intr_return_all_credits(&enic->intr[err_intr]); - enic_log_q_error(enic); - /* schedule recovery from WQ/RQ error */ - schedule_work(&enic->reset); - return IRQ_HANDLED; - } - - if (ENIC_TEST_INTR(pba, io_intr)) { - if (napi_schedule_prep(&enic->napi[0])) - __napi_schedule(&enic->napi[0]); - } else { - vnic_intr_unmask(&enic->intr[io_intr]); - } - - return IRQ_HANDLED; -} - -static irqreturn_t enic_isr_msi(int irq, void *data) -{ - struct enic *enic = data; - - /* With MSI, there is no sharing of interrupts, so this is - * our interrupt and there is no need to ack it. The device - * is not providing per-vector masking, so the OS will not - * write to PCI config space to mask/unmask the interrupt. - * We're using mask_on_assertion for MSI, so the device - * automatically masks the interrupt when the interrupt is - * generated. Later, when exiting polling, the interrupt - * will be unmasked (see enic_poll). - * - * Also, the device uses the same PCIe Traffic Class (TC) - * for Memory Write data and MSI, so there are no ordering - * issues; the MSI will always arrive at the Root Complex - * _after_ corresponding Memory Writes (i.e. descriptor - * writes). - */ - - napi_schedule(&enic->napi[0]); - - return IRQ_HANDLED; -} - -static irqreturn_t enic_isr_msix_rq(int irq, void *data) -{ - struct napi_struct *napi = data; - - /* schedule NAPI polling for RQ cleanup */ - napi_schedule(napi); - - return IRQ_HANDLED; -} - -static irqreturn_t enic_isr_msix_wq(int irq, void *data) -{ - struct enic *enic = data; - unsigned int cq = enic_cq_wq(enic, 0); - unsigned int intr = enic_msix_wq_intr(enic, 0); - unsigned int wq_work_to_do = -1; /* no limit */ - unsigned int wq_work_done; - - wq_work_done = vnic_cq_service(&enic->cq[cq], - wq_work_to_do, enic_wq_service, NULL); - - vnic_intr_return_credits(&enic->intr[intr], - wq_work_done, - 1 /* unmask intr */, - 1 /* reset intr timer */); - - return IRQ_HANDLED; -} - -static irqreturn_t enic_isr_msix_err(int irq, void *data) -{ - struct enic *enic = data; - unsigned int intr = enic_msix_err_intr(enic); - - vnic_intr_return_all_credits(&enic->intr[intr]); - - enic_log_q_error(enic); - - /* schedule recovery from WQ/RQ error */ - schedule_work(&enic->reset); - - return IRQ_HANDLED; -} - -static irqreturn_t enic_isr_msix_notify(int irq, void *data) -{ - struct enic *enic = data; - unsigned int intr = enic_msix_notify_intr(enic); - - vnic_intr_return_all_credits(&enic->intr[intr]); - enic_notify_check(enic); - - return IRQ_HANDLED; -} - -static inline void enic_queue_wq_skb_cont(struct enic *enic, - struct vnic_wq *wq, struct sk_buff *skb, - unsigned int len_left, int loopback) -{ - skb_frag_t *frag; - - /* Queue additional data fragments */ - for (frag = skb_shinfo(skb)->frags; len_left; frag++) { - len_left -= frag->size; - enic_queue_wq_desc_cont(wq, skb, - pci_map_page(enic->pdev, frag->page, - frag->page_offset, frag->size, - PCI_DMA_TODEVICE), - frag->size, - (len_left == 0), /* EOP? */ - loopback); - } -} - -static inline void enic_queue_wq_skb_vlan(struct enic *enic, - struct vnic_wq *wq, struct sk_buff *skb, - int vlan_tag_insert, unsigned int vlan_tag, int loopback) -{ - unsigned int head_len = skb_headlen(skb); - unsigned int len_left = skb->len - head_len; - int eop = (len_left == 0); - - /* Queue the main skb fragment. The fragments are no larger - * than max MTU(9000)+ETH_HDR_LEN(14) bytes, which is less - * than WQ_ENET_MAX_DESC_LEN length. So only one descriptor - * per fragment is queued. - */ - enic_queue_wq_desc(wq, skb, - pci_map_single(enic->pdev, skb->data, - head_len, PCI_DMA_TODEVICE), - head_len, - vlan_tag_insert, vlan_tag, - eop, loopback); - - if (!eop) - enic_queue_wq_skb_cont(enic, wq, skb, len_left, loopback); -} - -static inline void enic_queue_wq_skb_csum_l4(struct enic *enic, - struct vnic_wq *wq, struct sk_buff *skb, - int vlan_tag_insert, unsigned int vlan_tag, int loopback) -{ - unsigned int head_len = skb_headlen(skb); - unsigned int len_left = skb->len - head_len; - unsigned int hdr_len = skb_checksum_start_offset(skb); - unsigned int csum_offset = hdr_len + skb->csum_offset; - int eop = (len_left == 0); - - /* Queue the main skb fragment. The fragments are no larger - * than max MTU(9000)+ETH_HDR_LEN(14) bytes, which is less - * than WQ_ENET_MAX_DESC_LEN length. So only one descriptor - * per fragment is queued. - */ - enic_queue_wq_desc_csum_l4(wq, skb, - pci_map_single(enic->pdev, skb->data, - head_len, PCI_DMA_TODEVICE), - head_len, - csum_offset, - hdr_len, - vlan_tag_insert, vlan_tag, - eop, loopback); - - if (!eop) - enic_queue_wq_skb_cont(enic, wq, skb, len_left, loopback); -} - -static inline void enic_queue_wq_skb_tso(struct enic *enic, - struct vnic_wq *wq, struct sk_buff *skb, unsigned int mss, - int vlan_tag_insert, unsigned int vlan_tag, int loopback) -{ - unsigned int frag_len_left = skb_headlen(skb); - unsigned int len_left = skb->len - frag_len_left; - unsigned int hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); - int eop = (len_left == 0); - unsigned int len; - dma_addr_t dma_addr; - unsigned int offset = 0; - skb_frag_t *frag; - - /* Preload TCP csum field with IP pseudo hdr calculated - * with IP length set to zero. HW will later add in length - * to each TCP segment resulting from the TSO. - */ - - if (skb->protocol == cpu_to_be16(ETH_P_IP)) { - ip_hdr(skb)->check = 0; - tcp_hdr(skb)->check = ~csum_tcpudp_magic(ip_hdr(skb)->saddr, - ip_hdr(skb)->daddr, 0, IPPROTO_TCP, 0); - } else if (skb->protocol == cpu_to_be16(ETH_P_IPV6)) { - tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, - &ipv6_hdr(skb)->daddr, 0, IPPROTO_TCP, 0); - } - - /* Queue WQ_ENET_MAX_DESC_LEN length descriptors - * for the main skb fragment - */ - while (frag_len_left) { - len = min(frag_len_left, (unsigned int)WQ_ENET_MAX_DESC_LEN); - dma_addr = pci_map_single(enic->pdev, skb->data + offset, - len, PCI_DMA_TODEVICE); - enic_queue_wq_desc_tso(wq, skb, - dma_addr, - len, - mss, hdr_len, - vlan_tag_insert, vlan_tag, - eop && (len == frag_len_left), loopback); - frag_len_left -= len; - offset += len; - } - - if (eop) - return; - - /* Queue WQ_ENET_MAX_DESC_LEN length descriptors - * for additional data fragments - */ - for (frag = skb_shinfo(skb)->frags; len_left; frag++) { - len_left -= frag->size; - frag_len_left = frag->size; - offset = frag->page_offset; - - while (frag_len_left) { - len = min(frag_len_left, - (unsigned int)WQ_ENET_MAX_DESC_LEN); - dma_addr = pci_map_page(enic->pdev, frag->page, - offset, len, - PCI_DMA_TODEVICE); - enic_queue_wq_desc_cont(wq, skb, - dma_addr, - len, - (len_left == 0) && - (len == frag_len_left), /* EOP? */ - loopback); - frag_len_left -= len; - offset += len; - } - } -} - -static inline void enic_queue_wq_skb(struct enic *enic, - struct vnic_wq *wq, struct sk_buff *skb) -{ - unsigned int mss = skb_shinfo(skb)->gso_size; - unsigned int vlan_tag = 0; - int vlan_tag_insert = 0; - int loopback = 0; - - if (vlan_tx_tag_present(skb)) { - /* VLAN tag from trunking driver */ - vlan_tag_insert = 1; - vlan_tag = vlan_tx_tag_get(skb); - } else if (enic->loop_enable) { - vlan_tag = enic->loop_tag; - loopback = 1; - } - - if (mss) - enic_queue_wq_skb_tso(enic, wq, skb, mss, - vlan_tag_insert, vlan_tag, loopback); - else if (skb->ip_summed == CHECKSUM_PARTIAL) - enic_queue_wq_skb_csum_l4(enic, wq, skb, - vlan_tag_insert, vlan_tag, loopback); - else - enic_queue_wq_skb_vlan(enic, wq, skb, - vlan_tag_insert, vlan_tag, loopback); -} - -/* netif_tx_lock held, process context with BHs disabled, or BH */ -static netdev_tx_t enic_hard_start_xmit(struct sk_buff *skb, - struct net_device *netdev) -{ - struct enic *enic = netdev_priv(netdev); - struct vnic_wq *wq = &enic->wq[0]; - unsigned long flags; - - if (skb->len <= 0) { - dev_kfree_skb(skb); - return NETDEV_TX_OK; - } - - /* Non-TSO sends must fit within ENIC_NON_TSO_MAX_DESC descs, - * which is very likely. In the off chance it's going to take - * more than * ENIC_NON_TSO_MAX_DESC, linearize the skb. - */ - - if (skb_shinfo(skb)->gso_size == 0 && - skb_shinfo(skb)->nr_frags + 1 > ENIC_NON_TSO_MAX_DESC && - skb_linearize(skb)) { - dev_kfree_skb(skb); - return NETDEV_TX_OK; - } - - spin_lock_irqsave(&enic->wq_lock[0], flags); - - if (vnic_wq_desc_avail(wq) < - skb_shinfo(skb)->nr_frags + ENIC_DESC_MAX_SPLITS) { - netif_stop_queue(netdev); - /* This is a hard error, log it */ - netdev_err(netdev, "BUG! Tx ring full when queue awake!\n"); - spin_unlock_irqrestore(&enic->wq_lock[0], flags); - return NETDEV_TX_BUSY; - } - - enic_queue_wq_skb(enic, wq, skb); - - if (vnic_wq_desc_avail(wq) < MAX_SKB_FRAGS + ENIC_DESC_MAX_SPLITS) - netif_stop_queue(netdev); - - spin_unlock_irqrestore(&enic->wq_lock[0], flags); - - return NETDEV_TX_OK; -} - -/* dev_base_lock rwlock held, nominally process context */ -static struct rtnl_link_stats64 *enic_get_stats(struct net_device *netdev, - struct rtnl_link_stats64 *net_stats) -{ - struct enic *enic = netdev_priv(netdev); - struct vnic_stats *stats; - - enic_dev_stats_dump(enic, &stats); - - net_stats->tx_packets = stats->tx.tx_frames_ok; - net_stats->tx_bytes = stats->tx.tx_bytes_ok; - net_stats->tx_errors = stats->tx.tx_errors; - net_stats->tx_dropped = stats->tx.tx_drops; - - net_stats->rx_packets = stats->rx.rx_frames_ok; - net_stats->rx_bytes = stats->rx.rx_bytes_ok; - net_stats->rx_errors = stats->rx.rx_errors; - net_stats->multicast = stats->rx.rx_multicast_frames_ok; - net_stats->rx_over_errors = enic->rq_truncated_pkts; - net_stats->rx_crc_errors = enic->rq_bad_fcs; - net_stats->rx_dropped = stats->rx.rx_no_bufs + stats->rx.rx_drop; - - return net_stats; -} - -void enic_reset_addr_lists(struct enic *enic) -{ - enic->mc_count = 0; - enic->uc_count = 0; - enic->flags = 0; -} - -static int enic_set_mac_addr(struct net_device *netdev, char *addr) -{ - struct enic *enic = netdev_priv(netdev); - - if (enic_is_dynamic(enic)) { - if (!is_valid_ether_addr(addr) && !is_zero_ether_addr(addr)) - return -EADDRNOTAVAIL; - } else { - if (!is_valid_ether_addr(addr)) - return -EADDRNOTAVAIL; - } - - memcpy(netdev->dev_addr, addr, netdev->addr_len); - - return 0; -} - -static int enic_set_mac_address_dynamic(struct net_device *netdev, void *p) -{ - struct enic *enic = netdev_priv(netdev); - struct sockaddr *saddr = p; - char *addr = saddr->sa_data; - int err; - - if (netif_running(enic->netdev)) { - err = enic_dev_del_station_addr(enic); - if (err) - return err; - } - - err = enic_set_mac_addr(netdev, addr); - if (err) - return err; - - if (netif_running(enic->netdev)) { - err = enic_dev_add_station_addr(enic); - if (err) - return err; - } - - return err; -} - -static int enic_set_mac_address(struct net_device *netdev, void *p) -{ - struct sockaddr *saddr = p; - char *addr = saddr->sa_data; - struct enic *enic = netdev_priv(netdev); - int err; - - err = enic_dev_del_station_addr(enic); - if (err) - return err; - - err = enic_set_mac_addr(netdev, addr); - if (err) - return err; - - return enic_dev_add_station_addr(enic); -} - -static void enic_update_multicast_addr_list(struct enic *enic) -{ - struct net_device *netdev = enic->netdev; - struct netdev_hw_addr *ha; - unsigned int mc_count = netdev_mc_count(netdev); - u8 mc_addr[ENIC_MULTICAST_PERFECT_FILTERS][ETH_ALEN]; - unsigned int i, j; - - if (mc_count > ENIC_MULTICAST_PERFECT_FILTERS) { - netdev_warn(netdev, "Registering only %d out of %d " - "multicast addresses\n", - ENIC_MULTICAST_PERFECT_FILTERS, mc_count); - mc_count = ENIC_MULTICAST_PERFECT_FILTERS; - } - - /* Is there an easier way? Trying to minimize to - * calls to add/del multicast addrs. We keep the - * addrs from the last call in enic->mc_addr and - * look for changes to add/del. - */ - - i = 0; - netdev_for_each_mc_addr(ha, netdev) { - if (i == mc_count) - break; - memcpy(mc_addr[i++], ha->addr, ETH_ALEN); - } - - for (i = 0; i < enic->mc_count; i++) { - for (j = 0; j < mc_count; j++) - if (compare_ether_addr(enic->mc_addr[i], - mc_addr[j]) == 0) - break; - if (j == mc_count) - enic_dev_del_addr(enic, enic->mc_addr[i]); - } - - for (i = 0; i < mc_count; i++) { - for (j = 0; j < enic->mc_count; j++) - if (compare_ether_addr(mc_addr[i], - enic->mc_addr[j]) == 0) - break; - if (j == enic->mc_count) - enic_dev_add_addr(enic, mc_addr[i]); - } - - /* Save the list to compare against next time - */ - - for (i = 0; i < mc_count; i++) - memcpy(enic->mc_addr[i], mc_addr[i], ETH_ALEN); - - enic->mc_count = mc_count; -} - -static void enic_update_unicast_addr_list(struct enic *enic) -{ - struct net_device *netdev = enic->netdev; - struct netdev_hw_addr *ha; - unsigned int uc_count = netdev_uc_count(netdev); - u8 uc_addr[ENIC_UNICAST_PERFECT_FILTERS][ETH_ALEN]; - unsigned int i, j; - - if (uc_count > ENIC_UNICAST_PERFECT_FILTERS) { - netdev_warn(netdev, "Registering only %d out of %d " - "unicast addresses\n", - ENIC_UNICAST_PERFECT_FILTERS, uc_count); - uc_count = ENIC_UNICAST_PERFECT_FILTERS; - } - - /* Is there an easier way? Trying to minimize to - * calls to add/del unicast addrs. We keep the - * addrs from the last call in enic->uc_addr and - * look for changes to add/del. - */ - - i = 0; - netdev_for_each_uc_addr(ha, netdev) { - if (i == uc_count) - break; - memcpy(uc_addr[i++], ha->addr, ETH_ALEN); - } - - for (i = 0; i < enic->uc_count; i++) { - for (j = 0; j < uc_count; j++) - if (compare_ether_addr(enic->uc_addr[i], - uc_addr[j]) == 0) - break; - if (j == uc_count) - enic_dev_del_addr(enic, enic->uc_addr[i]); - } - - for (i = 0; i < uc_count; i++) { - for (j = 0; j < enic->uc_count; j++) - if (compare_ether_addr(uc_addr[i], - enic->uc_addr[j]) == 0) - break; - if (j == enic->uc_count) - enic_dev_add_addr(enic, uc_addr[i]); - } - - /* Save the list to compare against next time - */ - - for (i = 0; i < uc_count; i++) - memcpy(enic->uc_addr[i], uc_addr[i], ETH_ALEN); - - enic->uc_count = uc_count; -} - -/* netif_tx_lock held, BHs disabled */ -static void enic_set_rx_mode(struct net_device *netdev) -{ - struct enic *enic = netdev_priv(netdev); - int directed = 1; - int multicast = (netdev->flags & IFF_MULTICAST) ? 1 : 0; - int broadcast = (netdev->flags & IFF_BROADCAST) ? 1 : 0; - int promisc = (netdev->flags & IFF_PROMISC) || - netdev_uc_count(netdev) > ENIC_UNICAST_PERFECT_FILTERS; - int allmulti = (netdev->flags & IFF_ALLMULTI) || - netdev_mc_count(netdev) > ENIC_MULTICAST_PERFECT_FILTERS; - unsigned int flags = netdev->flags | - (allmulti ? IFF_ALLMULTI : 0) | - (promisc ? IFF_PROMISC : 0); - - if (enic->flags != flags) { - enic->flags = flags; - enic_dev_packet_filter(enic, directed, - multicast, broadcast, promisc, allmulti); - } - - if (!promisc) { - enic_update_unicast_addr_list(enic); - if (!allmulti) - enic_update_multicast_addr_list(enic); - } -} - -/* netif_tx_lock held, BHs disabled */ -static void enic_tx_timeout(struct net_device *netdev) -{ - struct enic *enic = netdev_priv(netdev); - schedule_work(&enic->reset); -} - -static int enic_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) -{ - struct enic *enic = netdev_priv(netdev); - - if (vf != PORT_SELF_VF) - return -EOPNOTSUPP; - - /* Ignore the vf argument for now. We can assume the request - * is coming on a vf. - */ - if (is_valid_ether_addr(mac)) { - memcpy(enic->pp.vf_mac, mac, ETH_ALEN); - return 0; - } else - return -EINVAL; -} - -static int enic_set_vf_port(struct net_device *netdev, int vf, - struct nlattr *port[]) -{ - struct enic *enic = netdev_priv(netdev); - struct enic_port_profile prev_pp; - int err = 0, restore_pp = 1; - - /* don't support VFs, yet */ - if (vf != PORT_SELF_VF) - return -EOPNOTSUPP; - - if (!port[IFLA_PORT_REQUEST]) - return -EOPNOTSUPP; - - memcpy(&prev_pp, &enic->pp, sizeof(enic->pp)); - memset(&enic->pp, 0, sizeof(enic->pp)); - - enic->pp.set |= ENIC_SET_REQUEST; - enic->pp.request = nla_get_u8(port[IFLA_PORT_REQUEST]); - - if (port[IFLA_PORT_PROFILE]) { - enic->pp.set |= ENIC_SET_NAME; - memcpy(enic->pp.name, nla_data(port[IFLA_PORT_PROFILE]), - PORT_PROFILE_MAX); - } - - if (port[IFLA_PORT_INSTANCE_UUID]) { - enic->pp.set |= ENIC_SET_INSTANCE; - memcpy(enic->pp.instance_uuid, - nla_data(port[IFLA_PORT_INSTANCE_UUID]), PORT_UUID_MAX); - } - - if (port[IFLA_PORT_HOST_UUID]) { - enic->pp.set |= ENIC_SET_HOST; - memcpy(enic->pp.host_uuid, - nla_data(port[IFLA_PORT_HOST_UUID]), PORT_UUID_MAX); - } - - /* Special case handling: mac came from IFLA_VF_MAC */ - if (!is_zero_ether_addr(prev_pp.vf_mac)) - memcpy(enic->pp.mac_addr, prev_pp.vf_mac, ETH_ALEN); - - if (is_zero_ether_addr(netdev->dev_addr)) - random_ether_addr(netdev->dev_addr); - - err = enic_process_set_pp_request(enic, &prev_pp, &restore_pp); - if (err) { - if (restore_pp) { - /* Things are still the way they were: Implicit - * DISASSOCIATE failed - */ - memcpy(&enic->pp, &prev_pp, sizeof(enic->pp)); - } else { - memset(&enic->pp, 0, sizeof(enic->pp)); - memset(netdev->dev_addr, 0, ETH_ALEN); - } - } else { - /* Set flag to indicate that the port assoc/disassoc - * request has been sent out to fw - */ - enic->pp.set |= ENIC_PORT_REQUEST_APPLIED; - - /* If DISASSOCIATE, clean up all assigned/saved macaddresses */ - if (enic->pp.request == PORT_REQUEST_DISASSOCIATE) { - memset(enic->pp.mac_addr, 0, ETH_ALEN); - memset(netdev->dev_addr, 0, ETH_ALEN); - } - } - - memset(enic->pp.vf_mac, 0, ETH_ALEN); - - return err; -} - -static int enic_get_vf_port(struct net_device *netdev, int vf, - struct sk_buff *skb) -{ - struct enic *enic = netdev_priv(netdev); - u16 response = PORT_PROFILE_RESPONSE_SUCCESS; - int err; - - if (!(enic->pp.set & ENIC_PORT_REQUEST_APPLIED)) - return -ENODATA; - - err = enic_process_get_pp_request(enic, enic->pp.request, &response); - if (err) - return err; - - NLA_PUT_U16(skb, IFLA_PORT_REQUEST, enic->pp.request); - NLA_PUT_U16(skb, IFLA_PORT_RESPONSE, response); - if (enic->pp.set & ENIC_SET_NAME) - NLA_PUT(skb, IFLA_PORT_PROFILE, PORT_PROFILE_MAX, - enic->pp.name); - if (enic->pp.set & ENIC_SET_INSTANCE) - NLA_PUT(skb, IFLA_PORT_INSTANCE_UUID, PORT_UUID_MAX, - enic->pp.instance_uuid); - if (enic->pp.set & ENIC_SET_HOST) - NLA_PUT(skb, IFLA_PORT_HOST_UUID, PORT_UUID_MAX, - enic->pp.host_uuid); - - return 0; - -nla_put_failure: - return -EMSGSIZE; -} - -static void enic_free_rq_buf(struct vnic_rq *rq, struct vnic_rq_buf *buf) -{ - struct enic *enic = vnic_dev_priv(rq->vdev); - - if (!buf->os_buf) - return; - - pci_unmap_single(enic->pdev, buf->dma_addr, - buf->len, PCI_DMA_FROMDEVICE); - dev_kfree_skb_any(buf->os_buf); -} - -static int enic_rq_alloc_buf(struct vnic_rq *rq) -{ - struct enic *enic = vnic_dev_priv(rq->vdev); - struct net_device *netdev = enic->netdev; - struct sk_buff *skb; - unsigned int len = netdev->mtu + VLAN_ETH_HLEN; - unsigned int os_buf_index = 0; - dma_addr_t dma_addr; - - skb = netdev_alloc_skb_ip_align(netdev, len); - if (!skb) - return -ENOMEM; - - dma_addr = pci_map_single(enic->pdev, skb->data, - len, PCI_DMA_FROMDEVICE); - - enic_queue_rq_desc(rq, skb, os_buf_index, - dma_addr, len); - - return 0; -} - -static void enic_rq_indicate_buf(struct vnic_rq *rq, - struct cq_desc *cq_desc, struct vnic_rq_buf *buf, - int skipped, void *opaque) -{ - struct enic *enic = vnic_dev_priv(rq->vdev); - struct net_device *netdev = enic->netdev; - struct sk_buff *skb; - - u8 type, color, eop, sop, ingress_port, vlan_stripped; - u8 fcoe, fcoe_sof, fcoe_fc_crc_ok, fcoe_enc_error, fcoe_eof; - u8 tcp_udp_csum_ok, udp, tcp, ipv4_csum_ok; - u8 ipv6, ipv4, ipv4_fragment, fcs_ok, rss_type, csum_not_calc; - u8 packet_error; - u16 q_number, completed_index, bytes_written, vlan_tci, checksum; - u32 rss_hash; - - if (skipped) - return; - - skb = buf->os_buf; - prefetch(skb->data - NET_IP_ALIGN); - pci_unmap_single(enic->pdev, buf->dma_addr, - buf->len, PCI_DMA_FROMDEVICE); - - cq_enet_rq_desc_dec((struct cq_enet_rq_desc *)cq_desc, - &type, &color, &q_number, &completed_index, - &ingress_port, &fcoe, &eop, &sop, &rss_type, - &csum_not_calc, &rss_hash, &bytes_written, - &packet_error, &vlan_stripped, &vlan_tci, &checksum, - &fcoe_sof, &fcoe_fc_crc_ok, &fcoe_enc_error, - &fcoe_eof, &tcp_udp_csum_ok, &udp, &tcp, - &ipv4_csum_ok, &ipv6, &ipv4, &ipv4_fragment, - &fcs_ok); - - if (packet_error) { - - if (!fcs_ok) { - if (bytes_written > 0) - enic->rq_bad_fcs++; - else if (bytes_written == 0) - enic->rq_truncated_pkts++; - } - - dev_kfree_skb_any(skb); - - return; - } - - if (eop && bytes_written > 0) { - - /* Good receive - */ - - skb_put(skb, bytes_written); - skb->protocol = eth_type_trans(skb, netdev); - - if ((netdev->features & NETIF_F_RXCSUM) && !csum_not_calc) { - skb->csum = htons(checksum); - skb->ip_summed = CHECKSUM_COMPLETE; - } - - skb->dev = netdev; - - if (vlan_stripped) - __vlan_hwaccel_put_tag(skb, vlan_tci); - - if (netdev->features & NETIF_F_GRO) - napi_gro_receive(&enic->napi[q_number], skb); - else - netif_receive_skb(skb); - } else { - - /* Buffer overflow - */ - - dev_kfree_skb_any(skb); - } -} - -static int enic_rq_service(struct vnic_dev *vdev, struct cq_desc *cq_desc, - u8 type, u16 q_number, u16 completed_index, void *opaque) -{ - struct enic *enic = vnic_dev_priv(vdev); - - vnic_rq_service(&enic->rq[q_number], cq_desc, - completed_index, VNIC_RQ_RETURN_DESC, - enic_rq_indicate_buf, opaque); - - return 0; -} - -static int enic_poll(struct napi_struct *napi, int budget) -{ - struct net_device *netdev = napi->dev; - struct enic *enic = netdev_priv(netdev); - unsigned int cq_rq = enic_cq_rq(enic, 0); - unsigned int cq_wq = enic_cq_wq(enic, 0); - unsigned int intr = enic_legacy_io_intr(); - unsigned int rq_work_to_do = budget; - unsigned int wq_work_to_do = -1; /* no limit */ - unsigned int work_done, rq_work_done, wq_work_done; - int err; - - /* Service RQ (first) and WQ - */ - - rq_work_done = vnic_cq_service(&enic->cq[cq_rq], - rq_work_to_do, enic_rq_service, NULL); - - wq_work_done = vnic_cq_service(&enic->cq[cq_wq], - wq_work_to_do, enic_wq_service, NULL); - - /* Accumulate intr event credits for this polling - * cycle. An intr event is the completion of a - * a WQ or RQ packet. - */ - - work_done = rq_work_done + wq_work_done; - - if (work_done > 0) - vnic_intr_return_credits(&enic->intr[intr], - work_done, - 0 /* don't unmask intr */, - 0 /* don't reset intr timer */); - - err = vnic_rq_fill(&enic->rq[0], enic_rq_alloc_buf); - - /* Buffer allocation failed. Stay in polling - * mode so we can try to fill the ring again. - */ - - if (err) - rq_work_done = rq_work_to_do; - - if (rq_work_done < rq_work_to_do) { - - /* Some work done, but not enough to stay in polling, - * exit polling - */ - - napi_complete(napi); - vnic_intr_unmask(&enic->intr[intr]); - } - - return rq_work_done; -} - -static int enic_poll_msix(struct napi_struct *napi, int budget) -{ - struct net_device *netdev = napi->dev; - struct enic *enic = netdev_priv(netdev); - unsigned int rq = (napi - &enic->napi[0]); - unsigned int cq = enic_cq_rq(enic, rq); - unsigned int intr = enic_msix_rq_intr(enic, rq); - unsigned int work_to_do = budget; - unsigned int work_done; - int err; - - /* Service RQ - */ - - work_done = vnic_cq_service(&enic->cq[cq], - work_to_do, enic_rq_service, NULL); - - /* Return intr event credits for this polling - * cycle. An intr event is the completion of a - * RQ packet. - */ - - if (work_done > 0) - vnic_intr_return_credits(&enic->intr[intr], - work_done, - 0 /* don't unmask intr */, - 0 /* don't reset intr timer */); - - err = vnic_rq_fill(&enic->rq[rq], enic_rq_alloc_buf); - - /* Buffer allocation failed. Stay in polling mode - * so we can try to fill the ring again. - */ - - if (err) - work_done = work_to_do; - - if (work_done < work_to_do) { - - /* Some work done, but not enough to stay in polling, - * exit polling - */ - - napi_complete(napi); - vnic_intr_unmask(&enic->intr[intr]); - } - - return work_done; -} - -static void enic_notify_timer(unsigned long data) -{ - struct enic *enic = (struct enic *)data; - - enic_notify_check(enic); - - mod_timer(&enic->notify_timer, - round_jiffies(jiffies + ENIC_NOTIFY_TIMER_PERIOD)); -} - -static void enic_free_intr(struct enic *enic) -{ - struct net_device *netdev = enic->netdev; - unsigned int i; - - switch (vnic_dev_get_intr_mode(enic->vdev)) { - case VNIC_DEV_INTR_MODE_INTX: - free_irq(enic->pdev->irq, netdev); - break; - case VNIC_DEV_INTR_MODE_MSI: - free_irq(enic->pdev->irq, enic); - break; - case VNIC_DEV_INTR_MODE_MSIX: - for (i = 0; i < ARRAY_SIZE(enic->msix); i++) - if (enic->msix[i].requested) - free_irq(enic->msix_entry[i].vector, - enic->msix[i].devid); - break; - default: - break; - } -} - -static int enic_request_intr(struct enic *enic) -{ - struct net_device *netdev = enic->netdev; - unsigned int i, intr; - int err = 0; - - switch (vnic_dev_get_intr_mode(enic->vdev)) { - - case VNIC_DEV_INTR_MODE_INTX: - - err = request_irq(enic->pdev->irq, enic_isr_legacy, - IRQF_SHARED, netdev->name, netdev); - break; - - case VNIC_DEV_INTR_MODE_MSI: - - err = request_irq(enic->pdev->irq, enic_isr_msi, - 0, netdev->name, enic); - break; - - case VNIC_DEV_INTR_MODE_MSIX: - - for (i = 0; i < enic->rq_count; i++) { - intr = enic_msix_rq_intr(enic, i); - sprintf(enic->msix[intr].devname, - "%.11s-rx-%d", netdev->name, i); - enic->msix[intr].isr = enic_isr_msix_rq; - enic->msix[intr].devid = &enic->napi[i]; - } - - for (i = 0; i < enic->wq_count; i++) { - intr = enic_msix_wq_intr(enic, i); - sprintf(enic->msix[intr].devname, - "%.11s-tx-%d", netdev->name, i); - enic->msix[intr].isr = enic_isr_msix_wq; - enic->msix[intr].devid = enic; - } - - intr = enic_msix_err_intr(enic); - sprintf(enic->msix[intr].devname, - "%.11s-err", netdev->name); - enic->msix[intr].isr = enic_isr_msix_err; - enic->msix[intr].devid = enic; - - intr = enic_msix_notify_intr(enic); - sprintf(enic->msix[intr].devname, - "%.11s-notify", netdev->name); - enic->msix[intr].isr = enic_isr_msix_notify; - enic->msix[intr].devid = enic; - - for (i = 0; i < ARRAY_SIZE(enic->msix); i++) - enic->msix[i].requested = 0; - - for (i = 0; i < enic->intr_count; i++) { - err = request_irq(enic->msix_entry[i].vector, - enic->msix[i].isr, 0, - enic->msix[i].devname, - enic->msix[i].devid); - if (err) { - enic_free_intr(enic); - break; - } - enic->msix[i].requested = 1; - } - - break; - - default: - break; - } - - return err; -} - -static void enic_synchronize_irqs(struct enic *enic) -{ - unsigned int i; - - switch (vnic_dev_get_intr_mode(enic->vdev)) { - case VNIC_DEV_INTR_MODE_INTX: - case VNIC_DEV_INTR_MODE_MSI: - synchronize_irq(enic->pdev->irq); - break; - case VNIC_DEV_INTR_MODE_MSIX: - for (i = 0; i < enic->intr_count; i++) - synchronize_irq(enic->msix_entry[i].vector); - break; - default: - break; - } -} - -static int enic_dev_notify_set(struct enic *enic) -{ - int err; - - spin_lock(&enic->devcmd_lock); - switch (vnic_dev_get_intr_mode(enic->vdev)) { - case VNIC_DEV_INTR_MODE_INTX: - err = vnic_dev_notify_set(enic->vdev, - enic_legacy_notify_intr()); - break; - case VNIC_DEV_INTR_MODE_MSIX: - err = vnic_dev_notify_set(enic->vdev, - enic_msix_notify_intr(enic)); - break; - default: - err = vnic_dev_notify_set(enic->vdev, -1 /* no intr */); - break; - } - spin_unlock(&enic->devcmd_lock); - - return err; -} - -static void enic_notify_timer_start(struct enic *enic) -{ - switch (vnic_dev_get_intr_mode(enic->vdev)) { - case VNIC_DEV_INTR_MODE_MSI: - mod_timer(&enic->notify_timer, jiffies); - break; - default: - /* Using intr for notification for INTx/MSI-X */ - break; - } -} - -/* rtnl lock is held, process context */ -static int enic_open(struct net_device *netdev) -{ - struct enic *enic = netdev_priv(netdev); - unsigned int i; - int err; - - err = enic_request_intr(enic); - if (err) { - netdev_err(netdev, "Unable to request irq.\n"); - return err; - } - - err = enic_dev_notify_set(enic); - if (err) { - netdev_err(netdev, - "Failed to alloc notify buffer, aborting.\n"); - goto err_out_free_intr; - } - - for (i = 0; i < enic->rq_count; i++) { - vnic_rq_fill(&enic->rq[i], enic_rq_alloc_buf); - /* Need at least one buffer on ring to get going */ - if (vnic_rq_desc_used(&enic->rq[i]) == 0) { - netdev_err(netdev, "Unable to alloc receive buffers\n"); - err = -ENOMEM; - goto err_out_notify_unset; - } - } - - for (i = 0; i < enic->wq_count; i++) - vnic_wq_enable(&enic->wq[i]); - for (i = 0; i < enic->rq_count; i++) - vnic_rq_enable(&enic->rq[i]); - - if (enic_is_dynamic(enic) && !is_zero_ether_addr(enic->pp.mac_addr)) - enic_dev_add_addr(enic, enic->pp.mac_addr); - else - enic_dev_add_station_addr(enic); - enic_set_rx_mode(netdev); - - netif_wake_queue(netdev); - - for (i = 0; i < enic->rq_count; i++) - napi_enable(&enic->napi[i]); - - enic_dev_enable(enic); - - for (i = 0; i < enic->intr_count; i++) - vnic_intr_unmask(&enic->intr[i]); - - enic_notify_timer_start(enic); - - return 0; - -err_out_notify_unset: - enic_dev_notify_unset(enic); -err_out_free_intr: - enic_free_intr(enic); - - return err; -} - -/* rtnl lock is held, process context */ -static int enic_stop(struct net_device *netdev) -{ - struct enic *enic = netdev_priv(netdev); - unsigned int i; - int err; - - for (i = 0; i < enic->intr_count; i++) { - vnic_intr_mask(&enic->intr[i]); - (void)vnic_intr_masked(&enic->intr[i]); /* flush write */ - } - - enic_synchronize_irqs(enic); - - del_timer_sync(&enic->notify_timer); - - enic_dev_disable(enic); - - for (i = 0; i < enic->rq_count; i++) - napi_disable(&enic->napi[i]); - - netif_carrier_off(netdev); - netif_tx_disable(netdev); - if (enic_is_dynamic(enic) && !is_zero_ether_addr(enic->pp.mac_addr)) - enic_dev_del_addr(enic, enic->pp.mac_addr); - else - enic_dev_del_station_addr(enic); - - for (i = 0; i < enic->wq_count; i++) { - err = vnic_wq_disable(&enic->wq[i]); - if (err) - return err; - } - for (i = 0; i < enic->rq_count; i++) { - err = vnic_rq_disable(&enic->rq[i]); - if (err) - return err; - } - - enic_dev_notify_unset(enic); - enic_free_intr(enic); - - for (i = 0; i < enic->wq_count; i++) - vnic_wq_clean(&enic->wq[i], enic_free_wq_buf); - for (i = 0; i < enic->rq_count; i++) - vnic_rq_clean(&enic->rq[i], enic_free_rq_buf); - for (i = 0; i < enic->cq_count; i++) - vnic_cq_clean(&enic->cq[i]); - for (i = 0; i < enic->intr_count; i++) - vnic_intr_clean(&enic->intr[i]); - - return 0; -} - -static int enic_change_mtu(struct net_device *netdev, int new_mtu) -{ - struct enic *enic = netdev_priv(netdev); - int running = netif_running(netdev); - - if (new_mtu < ENIC_MIN_MTU || new_mtu > ENIC_MAX_MTU) - return -EINVAL; - - if (enic_is_dynamic(enic)) - return -EOPNOTSUPP; - - if (running) - enic_stop(netdev); - - netdev->mtu = new_mtu; - - if (netdev->mtu > enic->port_mtu) - netdev_warn(netdev, - "interface MTU (%d) set higher than port MTU (%d)\n", - netdev->mtu, enic->port_mtu); - - if (running) - enic_open(netdev); - - return 0; -} - -static void enic_change_mtu_work(struct work_struct *work) -{ - struct enic *enic = container_of(work, struct enic, change_mtu_work); - struct net_device *netdev = enic->netdev; - int new_mtu = vnic_dev_mtu(enic->vdev); - int err; - unsigned int i; - - new_mtu = max_t(int, ENIC_MIN_MTU, min_t(int, ENIC_MAX_MTU, new_mtu)); - - rtnl_lock(); - - /* Stop RQ */ - del_timer_sync(&enic->notify_timer); - - for (i = 0; i < enic->rq_count; i++) - napi_disable(&enic->napi[i]); - - vnic_intr_mask(&enic->intr[0]); - enic_synchronize_irqs(enic); - err = vnic_rq_disable(&enic->rq[0]); - if (err) { - netdev_err(netdev, "Unable to disable RQ.\n"); - return; - } - vnic_rq_clean(&enic->rq[0], enic_free_rq_buf); - vnic_cq_clean(&enic->cq[0]); - vnic_intr_clean(&enic->intr[0]); - - /* Fill RQ with new_mtu-sized buffers */ - netdev->mtu = new_mtu; - vnic_rq_fill(&enic->rq[0], enic_rq_alloc_buf); - /* Need at least one buffer on ring to get going */ - if (vnic_rq_desc_used(&enic->rq[0]) == 0) { - netdev_err(netdev, "Unable to alloc receive buffers.\n"); - return; - } - - /* Start RQ */ - vnic_rq_enable(&enic->rq[0]); - napi_enable(&enic->napi[0]); - vnic_intr_unmask(&enic->intr[0]); - enic_notify_timer_start(enic); - - rtnl_unlock(); - - netdev_info(netdev, "interface MTU set as %d\n", netdev->mtu); -} - -#ifdef CONFIG_NET_POLL_CONTROLLER -static void enic_poll_controller(struct net_device *netdev) -{ - struct enic *enic = netdev_priv(netdev); - struct vnic_dev *vdev = enic->vdev; - unsigned int i, intr; - - switch (vnic_dev_get_intr_mode(vdev)) { - case VNIC_DEV_INTR_MODE_MSIX: - for (i = 0; i < enic->rq_count; i++) { - intr = enic_msix_rq_intr(enic, i); - enic_isr_msix_rq(enic->msix_entry[intr].vector, - &enic->napi[i]); - } - - for (i = 0; i < enic->wq_count; i++) { - intr = enic_msix_wq_intr(enic, i); - enic_isr_msix_wq(enic->msix_entry[intr].vector, enic); - } - - break; - case VNIC_DEV_INTR_MODE_MSI: - enic_isr_msi(enic->pdev->irq, enic); - break; - case VNIC_DEV_INTR_MODE_INTX: - enic_isr_legacy(enic->pdev->irq, netdev); - break; - default: - break; - } -} -#endif - -static int enic_dev_wait(struct vnic_dev *vdev, - int (*start)(struct vnic_dev *, int), - int (*finished)(struct vnic_dev *, int *), - int arg) -{ - unsigned long time; - int done; - int err; - - BUG_ON(in_interrupt()); - - err = start(vdev, arg); - if (err) - return err; - - /* Wait for func to complete...2 seconds max - */ - - time = jiffies + (HZ * 2); - do { - - err = finished(vdev, &done); - if (err) - return err; - - if (done) - return 0; - - schedule_timeout_uninterruptible(HZ / 10); - - } while (time_after(time, jiffies)); - - return -ETIMEDOUT; -} - -static int enic_dev_open(struct enic *enic) -{ - int err; - - err = enic_dev_wait(enic->vdev, vnic_dev_open, - vnic_dev_open_done, 0); - if (err) - dev_err(enic_get_dev(enic), "vNIC device open failed, err %d\n", - err); - - return err; -} - -static int enic_dev_hang_reset(struct enic *enic) -{ - int err; - - err = enic_dev_wait(enic->vdev, vnic_dev_hang_reset, - vnic_dev_hang_reset_done, 0); - if (err) - netdev_err(enic->netdev, "vNIC hang reset failed, err %d\n", - err); - - return err; -} - -static int enic_set_rsskey(struct enic *enic) -{ - dma_addr_t rss_key_buf_pa; - union vnic_rss_key *rss_key_buf_va = NULL; - union vnic_rss_key rss_key = { - .key[0].b = {85, 67, 83, 97, 119, 101, 115, 111, 109, 101}, - .key[1].b = {80, 65, 76, 79, 117, 110, 105, 113, 117, 101}, - .key[2].b = {76, 73, 78, 85, 88, 114, 111, 99, 107, 115}, - .key[3].b = {69, 78, 73, 67, 105, 115, 99, 111, 111, 108}, - }; - int err; - - rss_key_buf_va = pci_alloc_consistent(enic->pdev, - sizeof(union vnic_rss_key), &rss_key_buf_pa); - if (!rss_key_buf_va) - return -ENOMEM; - - memcpy(rss_key_buf_va, &rss_key, sizeof(union vnic_rss_key)); - - spin_lock(&enic->devcmd_lock); - err = enic_set_rss_key(enic, - rss_key_buf_pa, - sizeof(union vnic_rss_key)); - spin_unlock(&enic->devcmd_lock); - - pci_free_consistent(enic->pdev, sizeof(union vnic_rss_key), - rss_key_buf_va, rss_key_buf_pa); - - return err; -} - -static int enic_set_rsscpu(struct enic *enic, u8 rss_hash_bits) -{ - dma_addr_t rss_cpu_buf_pa; - union vnic_rss_cpu *rss_cpu_buf_va = NULL; - unsigned int i; - int err; - - rss_cpu_buf_va = pci_alloc_consistent(enic->pdev, - sizeof(union vnic_rss_cpu), &rss_cpu_buf_pa); - if (!rss_cpu_buf_va) - return -ENOMEM; - - for (i = 0; i < (1 << rss_hash_bits); i++) - (*rss_cpu_buf_va).cpu[i/4].b[i%4] = i % enic->rq_count; - - spin_lock(&enic->devcmd_lock); - err = enic_set_rss_cpu(enic, - rss_cpu_buf_pa, - sizeof(union vnic_rss_cpu)); - spin_unlock(&enic->devcmd_lock); - - pci_free_consistent(enic->pdev, sizeof(union vnic_rss_cpu), - rss_cpu_buf_va, rss_cpu_buf_pa); - - return err; -} - -static int enic_set_niccfg(struct enic *enic, u8 rss_default_cpu, - u8 rss_hash_type, u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable) -{ - const u8 tso_ipid_split_en = 0; - const u8 ig_vlan_strip_en = 1; - int err; - - /* Enable VLAN tag stripping. - */ - - spin_lock(&enic->devcmd_lock); - err = enic_set_nic_cfg(enic, - rss_default_cpu, rss_hash_type, - rss_hash_bits, rss_base_cpu, - rss_enable, tso_ipid_split_en, - ig_vlan_strip_en); - spin_unlock(&enic->devcmd_lock); - - return err; -} - -static int enic_set_rss_nic_cfg(struct enic *enic) -{ - struct device *dev = enic_get_dev(enic); - const u8 rss_default_cpu = 0; - const u8 rss_hash_type = NIC_CFG_RSS_HASH_TYPE_IPV4 | - NIC_CFG_RSS_HASH_TYPE_TCP_IPV4 | - NIC_CFG_RSS_HASH_TYPE_IPV6 | - NIC_CFG_RSS_HASH_TYPE_TCP_IPV6; - const u8 rss_hash_bits = 7; - const u8 rss_base_cpu = 0; - u8 rss_enable = ENIC_SETTING(enic, RSS) && (enic->rq_count > 1); - - if (rss_enable) { - if (!enic_set_rsskey(enic)) { - if (enic_set_rsscpu(enic, rss_hash_bits)) { - rss_enable = 0; - dev_warn(dev, "RSS disabled, " - "Failed to set RSS cpu indirection table."); - } - } else { - rss_enable = 0; - dev_warn(dev, "RSS disabled, Failed to set RSS key.\n"); - } - } - - return enic_set_niccfg(enic, rss_default_cpu, rss_hash_type, - rss_hash_bits, rss_base_cpu, rss_enable); -} - -static void enic_reset(struct work_struct *work) -{ - struct enic *enic = container_of(work, struct enic, reset); - - if (!netif_running(enic->netdev)) - return; - - rtnl_lock(); - - enic_dev_hang_notify(enic); - enic_stop(enic->netdev); - enic_dev_hang_reset(enic); - enic_reset_addr_lists(enic); - enic_init_vnic_resources(enic); - enic_set_rss_nic_cfg(enic); - enic_dev_set_ig_vlan_rewrite_mode(enic); - enic_open(enic->netdev); - - rtnl_unlock(); -} - -static int enic_set_intr_mode(struct enic *enic) -{ - unsigned int n = min_t(unsigned int, enic->rq_count, ENIC_RQ_MAX); - unsigned int m = min_t(unsigned int, enic->wq_count, ENIC_WQ_MAX); - unsigned int i; - - /* Set interrupt mode (INTx, MSI, MSI-X) depending - * on system capabilities. - * - * Try MSI-X first - * - * We need n RQs, m WQs, n+m CQs, and n+m+2 INTRs - * (the second to last INTR is used for WQ/RQ errors) - * (the last INTR is used for notifications) - */ - - BUG_ON(ARRAY_SIZE(enic->msix_entry) < n + m + 2); - for (i = 0; i < n + m + 2; i++) - enic->msix_entry[i].entry = i; - - /* Use multiple RQs if RSS is enabled - */ - - if (ENIC_SETTING(enic, RSS) && - enic->config.intr_mode < 1 && - enic->rq_count >= n && - enic->wq_count >= m && - enic->cq_count >= n + m && - enic->intr_count >= n + m + 2) { - - if (!pci_enable_msix(enic->pdev, enic->msix_entry, n + m + 2)) { - - enic->rq_count = n; - enic->wq_count = m; - enic->cq_count = n + m; - enic->intr_count = n + m + 2; - - vnic_dev_set_intr_mode(enic->vdev, - VNIC_DEV_INTR_MODE_MSIX); - - return 0; - } - } - - if (enic->config.intr_mode < 1 && - enic->rq_count >= 1 && - enic->wq_count >= m && - enic->cq_count >= 1 + m && - enic->intr_count >= 1 + m + 2) { - if (!pci_enable_msix(enic->pdev, enic->msix_entry, 1 + m + 2)) { - - enic->rq_count = 1; - enic->wq_count = m; - enic->cq_count = 1 + m; - enic->intr_count = 1 + m + 2; - - vnic_dev_set_intr_mode(enic->vdev, - VNIC_DEV_INTR_MODE_MSIX); - - return 0; - } - } - - /* Next try MSI - * - * We need 1 RQ, 1 WQ, 2 CQs, and 1 INTR - */ - - if (enic->config.intr_mode < 2 && - enic->rq_count >= 1 && - enic->wq_count >= 1 && - enic->cq_count >= 2 && - enic->intr_count >= 1 && - !pci_enable_msi(enic->pdev)) { - - enic->rq_count = 1; - enic->wq_count = 1; - enic->cq_count = 2; - enic->intr_count = 1; - - vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_MSI); - - return 0; - } - - /* Next try INTx - * - * We need 1 RQ, 1 WQ, 2 CQs, and 3 INTRs - * (the first INTR is used for WQ/RQ) - * (the second INTR is used for WQ/RQ errors) - * (the last INTR is used for notifications) - */ - - if (enic->config.intr_mode < 3 && - enic->rq_count >= 1 && - enic->wq_count >= 1 && - enic->cq_count >= 2 && - enic->intr_count >= 3) { - - enic->rq_count = 1; - enic->wq_count = 1; - enic->cq_count = 2; - enic->intr_count = 3; - - vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_INTX); - - return 0; - } - - vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_UNKNOWN); - - return -EINVAL; -} - -static void enic_clear_intr_mode(struct enic *enic) -{ - switch (vnic_dev_get_intr_mode(enic->vdev)) { - case VNIC_DEV_INTR_MODE_MSIX: - pci_disable_msix(enic->pdev); - break; - case VNIC_DEV_INTR_MODE_MSI: - pci_disable_msi(enic->pdev); - break; - default: - break; - } - - vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_UNKNOWN); -} - -static const struct net_device_ops enic_netdev_dynamic_ops = { - .ndo_open = enic_open, - .ndo_stop = enic_stop, - .ndo_start_xmit = enic_hard_start_xmit, - .ndo_get_stats64 = enic_get_stats, - .ndo_validate_addr = eth_validate_addr, - .ndo_set_rx_mode = enic_set_rx_mode, - .ndo_set_multicast_list = enic_set_rx_mode, - .ndo_set_mac_address = enic_set_mac_address_dynamic, - .ndo_change_mtu = enic_change_mtu, - .ndo_vlan_rx_add_vid = enic_vlan_rx_add_vid, - .ndo_vlan_rx_kill_vid = enic_vlan_rx_kill_vid, - .ndo_tx_timeout = enic_tx_timeout, - .ndo_set_vf_port = enic_set_vf_port, - .ndo_get_vf_port = enic_get_vf_port, - .ndo_set_vf_mac = enic_set_vf_mac, -#ifdef CONFIG_NET_POLL_CONTROLLER - .ndo_poll_controller = enic_poll_controller, -#endif -}; - -static const struct net_device_ops enic_netdev_ops = { - .ndo_open = enic_open, - .ndo_stop = enic_stop, - .ndo_start_xmit = enic_hard_start_xmit, - .ndo_get_stats64 = enic_get_stats, - .ndo_validate_addr = eth_validate_addr, - .ndo_set_mac_address = enic_set_mac_address, - .ndo_set_rx_mode = enic_set_rx_mode, - .ndo_set_multicast_list = enic_set_rx_mode, - .ndo_change_mtu = enic_change_mtu, - .ndo_vlan_rx_add_vid = enic_vlan_rx_add_vid, - .ndo_vlan_rx_kill_vid = enic_vlan_rx_kill_vid, - .ndo_tx_timeout = enic_tx_timeout, -#ifdef CONFIG_NET_POLL_CONTROLLER - .ndo_poll_controller = enic_poll_controller, -#endif -}; - -static void enic_dev_deinit(struct enic *enic) -{ - unsigned int i; - - for (i = 0; i < enic->rq_count; i++) - netif_napi_del(&enic->napi[i]); - - enic_free_vnic_resources(enic); - enic_clear_intr_mode(enic); -} - -static int enic_dev_init(struct enic *enic) -{ - struct device *dev = enic_get_dev(enic); - struct net_device *netdev = enic->netdev; - unsigned int i; - int err; - - /* Get interrupt coalesce timer info */ - err = enic_dev_intr_coal_timer_info(enic); - if (err) { - dev_warn(dev, "Using default conversion factor for " - "interrupt coalesce timer\n"); - vnic_dev_intr_coal_timer_info_default(enic->vdev); - } - - /* Get vNIC configuration - */ - - err = enic_get_vnic_config(enic); - if (err) { - dev_err(dev, "Get vNIC configuration failed, aborting\n"); - return err; - } - - /* Get available resource counts - */ - - enic_get_res_counts(enic); - - /* Set interrupt mode based on resource counts and system - * capabilities - */ - - err = enic_set_intr_mode(enic); - if (err) { - dev_err(dev, "Failed to set intr mode based on resource " - "counts and system capabilities, aborting\n"); - return err; - } - - /* Allocate and configure vNIC resources - */ - - err = enic_alloc_vnic_resources(enic); - if (err) { - dev_err(dev, "Failed to alloc vNIC resources, aborting\n"); - goto err_out_free_vnic_resources; - } - - enic_init_vnic_resources(enic); - - err = enic_set_rss_nic_cfg(enic); - if (err) { - dev_err(dev, "Failed to config nic, aborting\n"); - goto err_out_free_vnic_resources; - } - - switch (vnic_dev_get_intr_mode(enic->vdev)) { - default: - netif_napi_add(netdev, &enic->napi[0], enic_poll, 64); - break; - case VNIC_DEV_INTR_MODE_MSIX: - for (i = 0; i < enic->rq_count; i++) - netif_napi_add(netdev, &enic->napi[i], - enic_poll_msix, 64); - break; - } - - return 0; - -err_out_free_vnic_resources: - enic_clear_intr_mode(enic); - enic_free_vnic_resources(enic); - - return err; -} - -static void enic_iounmap(struct enic *enic) -{ - unsigned int i; - - for (i = 0; i < ARRAY_SIZE(enic->bar); i++) - if (enic->bar[i].vaddr) - iounmap(enic->bar[i].vaddr); -} - -static int __devinit enic_probe(struct pci_dev *pdev, - const struct pci_device_id *ent) -{ - struct device *dev = &pdev->dev; - struct net_device *netdev; - struct enic *enic; - int using_dac = 0; - unsigned int i; - int err; - - /* Allocate net device structure and initialize. Private - * instance data is initialized to zero. - */ - - netdev = alloc_etherdev(sizeof(struct enic)); - if (!netdev) { - pr_err("Etherdev alloc failed, aborting\n"); - return -ENOMEM; - } - - pci_set_drvdata(pdev, netdev); - - SET_NETDEV_DEV(netdev, &pdev->dev); - - enic = netdev_priv(netdev); - enic->netdev = netdev; - enic->pdev = pdev; - - /* Setup PCI resources - */ - - err = pci_enable_device_mem(pdev); - if (err) { - dev_err(dev, "Cannot enable PCI device, aborting\n"); - goto err_out_free_netdev; - } - - err = pci_request_regions(pdev, DRV_NAME); - if (err) { - dev_err(dev, "Cannot request PCI regions, aborting\n"); - goto err_out_disable_device; - } - - pci_set_master(pdev); - - /* Query PCI controller on system for DMA addressing - * limitation for the device. Try 40-bit first, and - * fail to 32-bit. - */ - - err = pci_set_dma_mask(pdev, DMA_BIT_MASK(40)); - if (err) { - err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); - if (err) { - dev_err(dev, "No usable DMA configuration, aborting\n"); - goto err_out_release_regions; - } - err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); - if (err) { - dev_err(dev, "Unable to obtain %u-bit DMA " - "for consistent allocations, aborting\n", 32); - goto err_out_release_regions; - } - } else { - err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40)); - if (err) { - dev_err(dev, "Unable to obtain %u-bit DMA " - "for consistent allocations, aborting\n", 40); - goto err_out_release_regions; - } - using_dac = 1; - } - - /* Map vNIC resources from BAR0-5 - */ - - for (i = 0; i < ARRAY_SIZE(enic->bar); i++) { - if (!(pci_resource_flags(pdev, i) & IORESOURCE_MEM)) - continue; - enic->bar[i].len = pci_resource_len(pdev, i); - enic->bar[i].vaddr = pci_iomap(pdev, i, enic->bar[i].len); - if (!enic->bar[i].vaddr) { - dev_err(dev, "Cannot memory-map BAR %d, aborting\n", i); - err = -ENODEV; - goto err_out_iounmap; - } - enic->bar[i].bus_addr = pci_resource_start(pdev, i); - } - - /* Register vNIC device - */ - - enic->vdev = vnic_dev_register(NULL, enic, pdev, enic->bar, - ARRAY_SIZE(enic->bar)); - if (!enic->vdev) { - dev_err(dev, "vNIC registration failed, aborting\n"); - err = -ENODEV; - goto err_out_iounmap; - } - - /* Issue device open to get device in known state - */ - - err = enic_dev_open(enic); - if (err) { - dev_err(dev, "vNIC dev open failed, aborting\n"); - goto err_out_vnic_unregister; - } - - /* Setup devcmd lock - */ - - spin_lock_init(&enic->devcmd_lock); - - /* - * Set ingress vlan rewrite mode before vnic initialization - */ - - err = enic_dev_set_ig_vlan_rewrite_mode(enic); - if (err) { - dev_err(dev, - "Failed to set ingress vlan rewrite mode, aborting.\n"); - goto err_out_dev_close; - } - - /* Issue device init to initialize the vnic-to-switch link. - * We'll start with carrier off and wait for link UP - * notification later to turn on carrier. We don't need - * to wait here for the vnic-to-switch link initialization - * to complete; link UP notification is the indication that - * the process is complete. - */ - - netif_carrier_off(netdev); - - /* Do not call dev_init for a dynamic vnic. - * For a dynamic vnic, init_prov_info will be - * called later by an upper layer. - */ - - if (!enic_is_dynamic(enic)) { - err = vnic_dev_init(enic->vdev, 0); - if (err) { - dev_err(dev, "vNIC dev init failed, aborting\n"); - goto err_out_dev_close; - } - } - - err = enic_dev_init(enic); - if (err) { - dev_err(dev, "Device initialization failed, aborting\n"); - goto err_out_dev_close; - } - - /* Setup notification timer, HW reset task, and wq locks - */ - - init_timer(&enic->notify_timer); - enic->notify_timer.function = enic_notify_timer; - enic->notify_timer.data = (unsigned long)enic; - - INIT_WORK(&enic->reset, enic_reset); - INIT_WORK(&enic->change_mtu_work, enic_change_mtu_work); - - for (i = 0; i < enic->wq_count; i++) - spin_lock_init(&enic->wq_lock[i]); - - /* Register net device - */ - - enic->port_mtu = enic->config.mtu; - (void)enic_change_mtu(netdev, enic->port_mtu); - - err = enic_set_mac_addr(netdev, enic->mac_addr); - if (err) { - dev_err(dev, "Invalid MAC address, aborting\n"); - goto err_out_dev_deinit; - } - - enic->tx_coalesce_usecs = enic->config.intr_timer_usec; - enic->rx_coalesce_usecs = enic->tx_coalesce_usecs; - - if (enic_is_dynamic(enic)) - netdev->netdev_ops = &enic_netdev_dynamic_ops; - else - netdev->netdev_ops = &enic_netdev_ops; - - netdev->watchdog_timeo = 2 * HZ; - netdev->ethtool_ops = &enic_ethtool_ops; - - netdev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX; - if (ENIC_SETTING(enic, LOOP)) { - netdev->features &= ~NETIF_F_HW_VLAN_TX; - enic->loop_enable = 1; - enic->loop_tag = enic->config.loop_tag; - dev_info(dev, "loopback tag=0x%04x\n", enic->loop_tag); - } - if (ENIC_SETTING(enic, TXCSUM)) - netdev->hw_features |= NETIF_F_SG | NETIF_F_HW_CSUM; - if (ENIC_SETTING(enic, TSO)) - netdev->hw_features |= NETIF_F_TSO | - NETIF_F_TSO6 | NETIF_F_TSO_ECN; - if (ENIC_SETTING(enic, RXCSUM)) - netdev->hw_features |= NETIF_F_RXCSUM; - - netdev->features |= netdev->hw_features; - - if (using_dac) - netdev->features |= NETIF_F_HIGHDMA; - - err = register_netdev(netdev); - if (err) { - dev_err(dev, "Cannot register net device, aborting\n"); - goto err_out_dev_deinit; - } - - return 0; - -err_out_dev_deinit: - enic_dev_deinit(enic); -err_out_dev_close: - vnic_dev_close(enic->vdev); -err_out_vnic_unregister: - vnic_dev_unregister(enic->vdev); -err_out_iounmap: - enic_iounmap(enic); -err_out_release_regions: - pci_release_regions(pdev); -err_out_disable_device: - pci_disable_device(pdev); -err_out_free_netdev: - pci_set_drvdata(pdev, NULL); - free_netdev(netdev); - - return err; -} - -static void __devexit enic_remove(struct pci_dev *pdev) -{ - struct net_device *netdev = pci_get_drvdata(pdev); - - if (netdev) { - struct enic *enic = netdev_priv(netdev); - - cancel_work_sync(&enic->reset); - cancel_work_sync(&enic->change_mtu_work); - unregister_netdev(netdev); - enic_dev_deinit(enic); - vnic_dev_close(enic->vdev); - vnic_dev_unregister(enic->vdev); - enic_iounmap(enic); - pci_release_regions(pdev); - pci_disable_device(pdev); - pci_set_drvdata(pdev, NULL); - free_netdev(netdev); - } -} - -static struct pci_driver enic_driver = { - .name = DRV_NAME, - .id_table = enic_id_table, - .probe = enic_probe, - .remove = __devexit_p(enic_remove), -}; - -static int __init enic_init_module(void) -{ - pr_info("%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION); - - return pci_register_driver(&enic_driver); -} - -static void __exit enic_cleanup_module(void) -{ - pci_unregister_driver(&enic_driver); -} - -module_init(enic_init_module); -module_exit(enic_cleanup_module); diff --git a/drivers/net/enic/enic_pp.c b/drivers/net/enic/enic_pp.c deleted file mode 100644 index ffaa75dd1de..00000000000 --- a/drivers/net/enic/enic_pp.c +++ /dev/null @@ -1,264 +0,0 @@ -/* - * Copyright 2011 Cisco Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#include -#include -#include -#include -#include -#include -#include -#include - -#include "vnic_vic.h" -#include "enic_res.h" -#include "enic.h" -#include "enic_dev.h" - -static int enic_set_port_profile(struct enic *enic) -{ - struct net_device *netdev = enic->netdev; - struct vic_provinfo *vp; - const u8 oui[3] = VIC_PROVINFO_CISCO_OUI; - const u16 os_type = htons(VIC_GENERIC_PROV_OS_TYPE_LINUX); - char uuid_str[38]; - char client_mac_str[18]; - u8 *client_mac; - int err; - - if (!(enic->pp.set & ENIC_SET_NAME) || !strlen(enic->pp.name)) - return -EINVAL; - - vp = vic_provinfo_alloc(GFP_KERNEL, oui, - VIC_PROVINFO_GENERIC_TYPE); - if (!vp) - return -ENOMEM; - - VIC_PROVINFO_ADD_TLV(vp, - VIC_GENERIC_PROV_TLV_PORT_PROFILE_NAME_STR, - strlen(enic->pp.name) + 1, enic->pp.name); - - if (!is_zero_ether_addr(enic->pp.mac_addr)) - client_mac = enic->pp.mac_addr; - else - client_mac = netdev->dev_addr; - - VIC_PROVINFO_ADD_TLV(vp, - VIC_GENERIC_PROV_TLV_CLIENT_MAC_ADDR, - ETH_ALEN, client_mac); - - snprintf(client_mac_str, sizeof(client_mac_str), "%pM", client_mac); - VIC_PROVINFO_ADD_TLV(vp, - VIC_GENERIC_PROV_TLV_CLUSTER_PORT_UUID_STR, - sizeof(client_mac_str), client_mac_str); - - if (enic->pp.set & ENIC_SET_INSTANCE) { - sprintf(uuid_str, "%pUB", enic->pp.instance_uuid); - VIC_PROVINFO_ADD_TLV(vp, - VIC_GENERIC_PROV_TLV_CLIENT_UUID_STR, - sizeof(uuid_str), uuid_str); - } - - if (enic->pp.set & ENIC_SET_HOST) { - sprintf(uuid_str, "%pUB", enic->pp.host_uuid); - VIC_PROVINFO_ADD_TLV(vp, - VIC_GENERIC_PROV_TLV_HOST_UUID_STR, - sizeof(uuid_str), uuid_str); - } - - VIC_PROVINFO_ADD_TLV(vp, - VIC_GENERIC_PROV_TLV_OS_TYPE, - sizeof(os_type), &os_type); - - err = enic_dev_status_to_errno(enic_dev_init_prov2(enic, vp)); - -add_tlv_failure: - vic_provinfo_free(vp); - - return err; -} - -static int enic_unset_port_profile(struct enic *enic) -{ - int err; - - err = enic_vnic_dev_deinit(enic); - if (err) - return enic_dev_status_to_errno(err); - - enic_reset_addr_lists(enic); - - return 0; -} - -static int enic_are_pp_different(struct enic_port_profile *pp1, - struct enic_port_profile *pp2) -{ - return strcmp(pp1->name, pp2->name) | !!memcmp(pp1->instance_uuid, - pp2->instance_uuid, PORT_UUID_MAX) | - !!memcmp(pp1->host_uuid, pp2->host_uuid, PORT_UUID_MAX) | - !!memcmp(pp1->mac_addr, pp2->mac_addr, ETH_ALEN); -} - -static int enic_pp_preassociate(struct enic *enic, - struct enic_port_profile *prev_pp, int *restore_pp); -static int enic_pp_disassociate(struct enic *enic, - struct enic_port_profile *prev_pp, int *restore_pp); -static int enic_pp_preassociate_rr(struct enic *enic, - struct enic_port_profile *prev_pp, int *restore_pp); -static int enic_pp_associate(struct enic *enic, - struct enic_port_profile *prev_pp, int *restore_pp); - -static int (*enic_pp_handlers[])(struct enic *enic, - struct enic_port_profile *prev_state, int *restore_pp) = { - [PORT_REQUEST_PREASSOCIATE] = enic_pp_preassociate, - [PORT_REQUEST_PREASSOCIATE_RR] = enic_pp_preassociate_rr, - [PORT_REQUEST_ASSOCIATE] = enic_pp_associate, - [PORT_REQUEST_DISASSOCIATE] = enic_pp_disassociate, -}; - -static const int enic_pp_handlers_count = - sizeof(enic_pp_handlers)/sizeof(*enic_pp_handlers); - -static int enic_pp_preassociate(struct enic *enic, - struct enic_port_profile *prev_pp, int *restore_pp) -{ - return -EOPNOTSUPP; -} - -static int enic_pp_disassociate(struct enic *enic, - struct enic_port_profile *prev_pp, int *restore_pp) -{ - return enic_unset_port_profile(enic); -} - -static int enic_pp_preassociate_rr(struct enic *enic, - struct enic_port_profile *prev_pp, int *restore_pp) -{ - int err; - int active = 0; - - if (enic->pp.request != PORT_REQUEST_ASSOCIATE) { - /* If pre-associate is not part of an associate. - We always disassociate first */ - err = enic_pp_handlers[PORT_REQUEST_DISASSOCIATE](enic, - prev_pp, restore_pp); - if (err) - return err; - - *restore_pp = 0; - } - - *restore_pp = 0; - - err = enic_set_port_profile(enic); - if (err) - return err; - - /* If pre-associate is not part of an associate. */ - if (enic->pp.request != PORT_REQUEST_ASSOCIATE) - err = enic_dev_status_to_errno(enic_dev_enable2(enic, active)); - - return err; -} - -static int enic_pp_associate(struct enic *enic, - struct enic_port_profile *prev_pp, int *restore_pp) -{ - int err; - int active = 1; - - /* Check if a pre-associate was called before */ - if (prev_pp->request != PORT_REQUEST_PREASSOCIATE_RR || - (prev_pp->request == PORT_REQUEST_PREASSOCIATE_RR && - enic_are_pp_different(prev_pp, &enic->pp))) { - err = enic_pp_handlers[PORT_REQUEST_DISASSOCIATE]( - enic, prev_pp, restore_pp); - if (err) - return err; - - *restore_pp = 0; - } - - err = enic_pp_handlers[PORT_REQUEST_PREASSOCIATE_RR]( - enic, prev_pp, restore_pp); - if (err) - return err; - - *restore_pp = 0; - - return enic_dev_status_to_errno(enic_dev_enable2(enic, active)); -} - -int enic_process_set_pp_request(struct enic *enic, - struct enic_port_profile *prev_pp, int *restore_pp) -{ - if (enic->pp.request < enic_pp_handlers_count - && enic_pp_handlers[enic->pp.request]) - return enic_pp_handlers[enic->pp.request](enic, - prev_pp, restore_pp); - else - return -EOPNOTSUPP; -} - -int enic_process_get_pp_request(struct enic *enic, int request, - u16 *response) -{ - int err, status = ERR_SUCCESS; - - switch (request) { - - case PORT_REQUEST_PREASSOCIATE_RR: - case PORT_REQUEST_ASSOCIATE: - err = enic_dev_enable2_done(enic, &status); - break; - - case PORT_REQUEST_DISASSOCIATE: - err = enic_dev_deinit_done(enic, &status); - break; - - default: - return -EINVAL; - } - - if (err) - status = err; - - switch (status) { - case ERR_SUCCESS: - *response = PORT_PROFILE_RESPONSE_SUCCESS; - break; - case ERR_EINVAL: - *response = PORT_PROFILE_RESPONSE_INVALID; - break; - case ERR_EBADSTATE: - *response = PORT_PROFILE_RESPONSE_BADSTATE; - break; - case ERR_ENOMEM: - *response = PORT_PROFILE_RESPONSE_INSUFFICIENT_RESOURCES; - break; - case ERR_EINPROGRESS: - *response = PORT_PROFILE_RESPONSE_INPROGRESS; - break; - default: - *response = PORT_PROFILE_RESPONSE_ERROR; - break; - } - - return 0; -} diff --git a/drivers/net/enic/enic_pp.h b/drivers/net/enic/enic_pp.h deleted file mode 100644 index 699e365a944..00000000000 --- a/drivers/net/enic/enic_pp.h +++ /dev/null @@ -1,27 +0,0 @@ -/* - * Copyright 2011 Cisco Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#ifndef _ENIC_PP_H_ -#define _ENIC_PP_H_ - -int enic_process_set_pp_request(struct enic *enic, - struct enic_port_profile *prev_pp, int *restore_pp); -int enic_process_get_pp_request(struct enic *enic, int request, - u16 *response); - -#endif /* _ENIC_PP_H_ */ diff --git a/drivers/net/enic/enic_res.c b/drivers/net/enic/enic_res.c deleted file mode 100644 index 4a35367de79..00000000000 --- a/drivers/net/enic/enic_res.c +++ /dev/null @@ -1,384 +0,0 @@ -/* - * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. - * Copyright 2007 Nuova Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#include -#include -#include -#include -#include - -#include "wq_enet_desc.h" -#include "rq_enet_desc.h" -#include "cq_enet_desc.h" -#include "vnic_resource.h" -#include "vnic_enet.h" -#include "vnic_dev.h" -#include "vnic_wq.h" -#include "vnic_rq.h" -#include "vnic_cq.h" -#include "vnic_intr.h" -#include "vnic_stats.h" -#include "vnic_nic.h" -#include "vnic_rss.h" -#include "enic_res.h" -#include "enic.h" - -int enic_get_vnic_config(struct enic *enic) -{ - struct vnic_enet_config *c = &enic->config; - int err; - - err = vnic_dev_mac_addr(enic->vdev, enic->mac_addr); - if (err) { - dev_err(enic_get_dev(enic), - "Error getting MAC addr, %d\n", err); - return err; - } - -#define GET_CONFIG(m) \ - do { \ - err = vnic_dev_spec(enic->vdev, \ - offsetof(struct vnic_enet_config, m), \ - sizeof(c->m), &c->m); \ - if (err) { \ - dev_err(enic_get_dev(enic), \ - "Error getting %s, %d\n", #m, err); \ - return err; \ - } \ - } while (0) - - GET_CONFIG(flags); - GET_CONFIG(wq_desc_count); - GET_CONFIG(rq_desc_count); - GET_CONFIG(mtu); - GET_CONFIG(intr_timer_type); - GET_CONFIG(intr_mode); - GET_CONFIG(intr_timer_usec); - GET_CONFIG(loop_tag); - - c->wq_desc_count = - min_t(u32, ENIC_MAX_WQ_DESCS, - max_t(u32, ENIC_MIN_WQ_DESCS, - c->wq_desc_count)); - c->wq_desc_count &= 0xffffffe0; /* must be aligned to groups of 32 */ - - c->rq_desc_count = - min_t(u32, ENIC_MAX_RQ_DESCS, - max_t(u32, ENIC_MIN_RQ_DESCS, - c->rq_desc_count)); - c->rq_desc_count &= 0xffffffe0; /* must be aligned to groups of 32 */ - - if (c->mtu == 0) - c->mtu = 1500; - c->mtu = min_t(u16, ENIC_MAX_MTU, - max_t(u16, ENIC_MIN_MTU, - c->mtu)); - - c->intr_timer_usec = min_t(u32, c->intr_timer_usec, - vnic_dev_get_intr_coal_timer_max(enic->vdev)); - - dev_info(enic_get_dev(enic), - "vNIC MAC addr %pM wq/rq %d/%d mtu %d\n", - enic->mac_addr, c->wq_desc_count, c->rq_desc_count, c->mtu); - - dev_info(enic_get_dev(enic), "vNIC csum tx/rx %s/%s " - "tso/lro %s/%s rss %s intr mode %s type %s timer %d usec " - "loopback tag 0x%04x\n", - ENIC_SETTING(enic, TXCSUM) ? "yes" : "no", - ENIC_SETTING(enic, RXCSUM) ? "yes" : "no", - ENIC_SETTING(enic, TSO) ? "yes" : "no", - ENIC_SETTING(enic, LRO) ? "yes" : "no", - ENIC_SETTING(enic, RSS) ? "yes" : "no", - c->intr_mode == VENET_INTR_MODE_INTX ? "INTx" : - c->intr_mode == VENET_INTR_MODE_MSI ? "MSI" : - c->intr_mode == VENET_INTR_MODE_ANY ? "any" : - "unknown", - c->intr_timer_type == VENET_INTR_TYPE_MIN ? "min" : - c->intr_timer_type == VENET_INTR_TYPE_IDLE ? "idle" : - "unknown", - c->intr_timer_usec, - c->loop_tag); - - return 0; -} - -int enic_add_vlan(struct enic *enic, u16 vlanid) -{ - u64 a0 = vlanid, a1 = 0; - int wait = 1000; - int err; - - err = vnic_dev_cmd(enic->vdev, CMD_VLAN_ADD, &a0, &a1, wait); - if (err) - dev_err(enic_get_dev(enic), "Can't add vlan id, %d\n", err); - - return err; -} - -int enic_del_vlan(struct enic *enic, u16 vlanid) -{ - u64 a0 = vlanid, a1 = 0; - int wait = 1000; - int err; - - err = vnic_dev_cmd(enic->vdev, CMD_VLAN_DEL, &a0, &a1, wait); - if (err) - dev_err(enic_get_dev(enic), "Can't delete vlan id, %d\n", err); - - return err; -} - -int enic_set_nic_cfg(struct enic *enic, u8 rss_default_cpu, u8 rss_hash_type, - u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable, u8 tso_ipid_split_en, - u8 ig_vlan_strip_en) -{ - u64 a0, a1; - u32 nic_cfg; - int wait = 1000; - - vnic_set_nic_cfg(&nic_cfg, rss_default_cpu, - rss_hash_type, rss_hash_bits, rss_base_cpu, - rss_enable, tso_ipid_split_en, ig_vlan_strip_en); - - a0 = nic_cfg; - a1 = 0; - - return vnic_dev_cmd(enic->vdev, CMD_NIC_CFG, &a0, &a1, wait); -} - -int enic_set_rss_key(struct enic *enic, dma_addr_t key_pa, u64 len) -{ - u64 a0 = (u64)key_pa, a1 = len; - int wait = 1000; - - return vnic_dev_cmd(enic->vdev, CMD_RSS_KEY, &a0, &a1, wait); -} - -int enic_set_rss_cpu(struct enic *enic, dma_addr_t cpu_pa, u64 len) -{ - u64 a0 = (u64)cpu_pa, a1 = len; - int wait = 1000; - - return vnic_dev_cmd(enic->vdev, CMD_RSS_CPU, &a0, &a1, wait); -} - -void enic_free_vnic_resources(struct enic *enic) -{ - unsigned int i; - - for (i = 0; i < enic->wq_count; i++) - vnic_wq_free(&enic->wq[i]); - for (i = 0; i < enic->rq_count; i++) - vnic_rq_free(&enic->rq[i]); - for (i = 0; i < enic->cq_count; i++) - vnic_cq_free(&enic->cq[i]); - for (i = 0; i < enic->intr_count; i++) - vnic_intr_free(&enic->intr[i]); -} - -void enic_get_res_counts(struct enic *enic) -{ - enic->wq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_WQ); - enic->rq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_RQ); - enic->cq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_CQ); - enic->intr_count = vnic_dev_get_res_count(enic->vdev, - RES_TYPE_INTR_CTRL); - - dev_info(enic_get_dev(enic), - "vNIC resources avail: wq %d rq %d cq %d intr %d\n", - enic->wq_count, enic->rq_count, - enic->cq_count, enic->intr_count); -} - -void enic_init_vnic_resources(struct enic *enic) -{ - enum vnic_dev_intr_mode intr_mode; - unsigned int mask_on_assertion; - unsigned int interrupt_offset; - unsigned int error_interrupt_enable; - unsigned int error_interrupt_offset; - unsigned int cq_index; - unsigned int i; - - intr_mode = vnic_dev_get_intr_mode(enic->vdev); - - /* Init RQ/WQ resources. - * - * RQ[0 - n-1] point to CQ[0 - n-1] - * WQ[0 - m-1] point to CQ[n - n+m-1] - * - * Error interrupt is not enabled for MSI. - */ - - switch (intr_mode) { - case VNIC_DEV_INTR_MODE_INTX: - case VNIC_DEV_INTR_MODE_MSIX: - error_interrupt_enable = 1; - error_interrupt_offset = enic->intr_count - 2; - break; - default: - error_interrupt_enable = 0; - error_interrupt_offset = 0; - break; - } - - for (i = 0; i < enic->rq_count; i++) { - cq_index = i; - vnic_rq_init(&enic->rq[i], - cq_index, - error_interrupt_enable, - error_interrupt_offset); - } - - for (i = 0; i < enic->wq_count; i++) { - cq_index = enic->rq_count + i; - vnic_wq_init(&enic->wq[i], - cq_index, - error_interrupt_enable, - error_interrupt_offset); - } - - /* Init CQ resources - * - * CQ[0 - n+m-1] point to INTR[0] for INTx, MSI - * CQ[0 - n+m-1] point to INTR[0 - n+m-1] for MSI-X - */ - - for (i = 0; i < enic->cq_count; i++) { - - switch (intr_mode) { - case VNIC_DEV_INTR_MODE_MSIX: - interrupt_offset = i; - break; - default: - interrupt_offset = 0; - break; - } - - vnic_cq_init(&enic->cq[i], - 0 /* flow_control_enable */, - 1 /* color_enable */, - 0 /* cq_head */, - 0 /* cq_tail */, - 1 /* cq_tail_color */, - 1 /* interrupt_enable */, - 1 /* cq_entry_enable */, - 0 /* cq_message_enable */, - interrupt_offset, - 0 /* cq_message_addr */); - } - - /* Init INTR resources - * - * mask_on_assertion is not used for INTx due to the level- - * triggered nature of INTx - */ - - switch (intr_mode) { - case VNIC_DEV_INTR_MODE_MSI: - case VNIC_DEV_INTR_MODE_MSIX: - mask_on_assertion = 1; - break; - default: - mask_on_assertion = 0; - break; - } - - for (i = 0; i < enic->intr_count; i++) { - vnic_intr_init(&enic->intr[i], - enic->config.intr_timer_usec, - enic->config.intr_timer_type, - mask_on_assertion); - } -} - -int enic_alloc_vnic_resources(struct enic *enic) -{ - enum vnic_dev_intr_mode intr_mode; - unsigned int i; - int err; - - intr_mode = vnic_dev_get_intr_mode(enic->vdev); - - dev_info(enic_get_dev(enic), "vNIC resources used: " - "wq %d rq %d cq %d intr %d intr mode %s\n", - enic->wq_count, enic->rq_count, - enic->cq_count, enic->intr_count, - intr_mode == VNIC_DEV_INTR_MODE_INTX ? "legacy PCI INTx" : - intr_mode == VNIC_DEV_INTR_MODE_MSI ? "MSI" : - intr_mode == VNIC_DEV_INTR_MODE_MSIX ? "MSI-X" : - "unknown"); - - /* Allocate queue resources - */ - - for (i = 0; i < enic->wq_count; i++) { - err = vnic_wq_alloc(enic->vdev, &enic->wq[i], i, - enic->config.wq_desc_count, - sizeof(struct wq_enet_desc)); - if (err) - goto err_out_cleanup; - } - - for (i = 0; i < enic->rq_count; i++) { - err = vnic_rq_alloc(enic->vdev, &enic->rq[i], i, - enic->config.rq_desc_count, - sizeof(struct rq_enet_desc)); - if (err) - goto err_out_cleanup; - } - - for (i = 0; i < enic->cq_count; i++) { - if (i < enic->rq_count) - err = vnic_cq_alloc(enic->vdev, &enic->cq[i], i, - enic->config.rq_desc_count, - sizeof(struct cq_enet_rq_desc)); - else - err = vnic_cq_alloc(enic->vdev, &enic->cq[i], i, - enic->config.wq_desc_count, - sizeof(struct cq_enet_wq_desc)); - if (err) - goto err_out_cleanup; - } - - for (i = 0; i < enic->intr_count; i++) { - err = vnic_intr_alloc(enic->vdev, &enic->intr[i], i); - if (err) - goto err_out_cleanup; - } - - /* Hook remaining resource - */ - - enic->legacy_pba = vnic_dev_get_res(enic->vdev, - RES_TYPE_INTR_PBA_LEGACY, 0); - if (!enic->legacy_pba && intr_mode == VNIC_DEV_INTR_MODE_INTX) { - dev_err(enic_get_dev(enic), - "Failed to hook legacy pba resource\n"); - err = -ENODEV; - goto err_out_cleanup; - } - - return 0; - -err_out_cleanup: - enic_free_vnic_resources(enic); - - return err; -} diff --git a/drivers/net/enic/enic_res.h b/drivers/net/enic/enic_res.h deleted file mode 100644 index 25be2734c3f..00000000000 --- a/drivers/net/enic/enic_res.h +++ /dev/null @@ -1,148 +0,0 @@ -/* - * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. - * Copyright 2007 Nuova Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#ifndef _ENIC_RES_H_ -#define _ENIC_RES_H_ - -#include "wq_enet_desc.h" -#include "rq_enet_desc.h" -#include "vnic_wq.h" -#include "vnic_rq.h" - -#define ENIC_MIN_WQ_DESCS 64 -#define ENIC_MAX_WQ_DESCS 4096 -#define ENIC_MIN_RQ_DESCS 64 -#define ENIC_MAX_RQ_DESCS 4096 - -#define ENIC_MIN_MTU 68 -#define ENIC_MAX_MTU 9000 - -#define ENIC_MULTICAST_PERFECT_FILTERS 32 -#define ENIC_UNICAST_PERFECT_FILTERS 32 - -#define ENIC_NON_TSO_MAX_DESC 16 - -#define ENIC_SETTING(enic, f) ((enic->config.flags & VENETF_##f) ? 1 : 0) - -static inline void enic_queue_wq_desc_ex(struct vnic_wq *wq, - void *os_buf, dma_addr_t dma_addr, unsigned int len, - unsigned int mss_or_csum_offset, unsigned int hdr_len, - int vlan_tag_insert, unsigned int vlan_tag, - int offload_mode, int cq_entry, int sop, int eop, int loopback) -{ - struct wq_enet_desc *desc = vnic_wq_next_desc(wq); - - wq_enet_desc_enc(desc, - (u64)dma_addr | VNIC_PADDR_TARGET, - (u16)len, - (u16)mss_or_csum_offset, - (u16)hdr_len, (u8)offload_mode, - (u8)eop, (u8)cq_entry, - 0, /* fcoe_encap */ - (u8)vlan_tag_insert, - (u16)vlan_tag, - (u8)loopback); - - vnic_wq_post(wq, os_buf, dma_addr, len, sop, eop); -} - -static inline void enic_queue_wq_desc_cont(struct vnic_wq *wq, - void *os_buf, dma_addr_t dma_addr, unsigned int len, - int eop, int loopback) -{ - enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len, - 0, 0, 0, 0, 0, - eop, 0 /* !SOP */, eop, loopback); -} - -static inline void enic_queue_wq_desc(struct vnic_wq *wq, void *os_buf, - dma_addr_t dma_addr, unsigned int len, int vlan_tag_insert, - unsigned int vlan_tag, int eop, int loopback) -{ - enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len, - 0, 0, vlan_tag_insert, vlan_tag, - WQ_ENET_OFFLOAD_MODE_CSUM, - eop, 1 /* SOP */, eop, loopback); -} - -static inline void enic_queue_wq_desc_csum(struct vnic_wq *wq, - void *os_buf, dma_addr_t dma_addr, unsigned int len, - int ip_csum, int tcpudp_csum, int vlan_tag_insert, - unsigned int vlan_tag, int eop, int loopback) -{ - enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len, - (ip_csum ? 1 : 0) + (tcpudp_csum ? 2 : 0), - 0, vlan_tag_insert, vlan_tag, - WQ_ENET_OFFLOAD_MODE_CSUM, - eop, 1 /* SOP */, eop, loopback); -} - -static inline void enic_queue_wq_desc_csum_l4(struct vnic_wq *wq, - void *os_buf, dma_addr_t dma_addr, unsigned int len, - unsigned int csum_offset, unsigned int hdr_len, - int vlan_tag_insert, unsigned int vlan_tag, int eop, int loopback) -{ - enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len, - csum_offset, hdr_len, vlan_tag_insert, vlan_tag, - WQ_ENET_OFFLOAD_MODE_CSUM_L4, - eop, 1 /* SOP */, eop, loopback); -} - -static inline void enic_queue_wq_desc_tso(struct vnic_wq *wq, - void *os_buf, dma_addr_t dma_addr, unsigned int len, - unsigned int mss, unsigned int hdr_len, int vlan_tag_insert, - unsigned int vlan_tag, int eop, int loopback) -{ - enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len, - mss, hdr_len, vlan_tag_insert, vlan_tag, - WQ_ENET_OFFLOAD_MODE_TSO, - eop, 1 /* SOP */, eop, loopback); -} - -static inline void enic_queue_rq_desc(struct vnic_rq *rq, - void *os_buf, unsigned int os_buf_index, - dma_addr_t dma_addr, unsigned int len) -{ - struct rq_enet_desc *desc = vnic_rq_next_desc(rq); - u8 type = os_buf_index ? - RQ_ENET_TYPE_NOT_SOP : RQ_ENET_TYPE_ONLY_SOP; - - rq_enet_desc_enc(desc, - (u64)dma_addr | VNIC_PADDR_TARGET, - type, (u16)len); - - vnic_rq_post(rq, os_buf, os_buf_index, dma_addr, len); -} - -struct enic; - -int enic_get_vnic_config(struct enic *); -int enic_add_vlan(struct enic *enic, u16 vlanid); -int enic_del_vlan(struct enic *enic, u16 vlanid); -int enic_set_nic_cfg(struct enic *enic, u8 rss_default_cpu, u8 rss_hash_type, - u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable, u8 tso_ipid_split_en, - u8 ig_vlan_strip_en); -int enic_set_rss_key(struct enic *enic, dma_addr_t key_pa, u64 len); -int enic_set_rss_cpu(struct enic *enic, dma_addr_t cpu_pa, u64 len); -void enic_get_res_counts(struct enic *enic); -void enic_init_vnic_resources(struct enic *enic); -int enic_alloc_vnic_resources(struct enic *); -void enic_free_vnic_resources(struct enic *); - -#endif /* _ENIC_RES_H_ */ diff --git a/drivers/net/enic/rq_enet_desc.h b/drivers/net/enic/rq_enet_desc.h deleted file mode 100644 index e6dd30988d6..00000000000 --- a/drivers/net/enic/rq_enet_desc.h +++ /dev/null @@ -1,60 +0,0 @@ -/* - * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. - * Copyright 2007 Nuova Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#ifndef _RQ_ENET_DESC_H_ -#define _RQ_ENET_DESC_H_ - -/* Ethernet receive queue descriptor: 16B */ -struct rq_enet_desc { - __le64 address; - __le16 length_type; - u8 reserved[6]; -}; - -enum rq_enet_type_types { - RQ_ENET_TYPE_ONLY_SOP = 0, - RQ_ENET_TYPE_NOT_SOP = 1, - RQ_ENET_TYPE_RESV2 = 2, - RQ_ENET_TYPE_RESV3 = 3, -}; - -#define RQ_ENET_ADDR_BITS 64 -#define RQ_ENET_LEN_BITS 14 -#define RQ_ENET_LEN_MASK ((1 << RQ_ENET_LEN_BITS) - 1) -#define RQ_ENET_TYPE_BITS 2 -#define RQ_ENET_TYPE_MASK ((1 << RQ_ENET_TYPE_BITS) - 1) - -static inline void rq_enet_desc_enc(struct rq_enet_desc *desc, - u64 address, u8 type, u16 length) -{ - desc->address = cpu_to_le64(address); - desc->length_type = cpu_to_le16((length & RQ_ENET_LEN_MASK) | - ((type & RQ_ENET_TYPE_MASK) << RQ_ENET_LEN_BITS)); -} - -static inline void rq_enet_desc_dec(struct rq_enet_desc *desc, - u64 *address, u8 *type, u16 *length) -{ - *address = le64_to_cpu(desc->address); - *length = le16_to_cpu(desc->length_type) & RQ_ENET_LEN_MASK; - *type = (u8)((le16_to_cpu(desc->length_type) >> RQ_ENET_LEN_BITS) & - RQ_ENET_TYPE_MASK); -} - -#endif /* _RQ_ENET_DESC_H_ */ diff --git a/drivers/net/enic/vnic_cq.c b/drivers/net/enic/vnic_cq.c deleted file mode 100644 index 0daa1c7073c..00000000000 --- a/drivers/net/enic/vnic_cq.c +++ /dev/null @@ -1,91 +0,0 @@ -/* - * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. - * Copyright 2007 Nuova Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#include -#include -#include -#include - -#include "vnic_dev.h" -#include "vnic_cq.h" - -void vnic_cq_free(struct vnic_cq *cq) -{ - vnic_dev_free_desc_ring(cq->vdev, &cq->ring); - - cq->ctrl = NULL; -} - -int vnic_cq_alloc(struct vnic_dev *vdev, struct vnic_cq *cq, unsigned int index, - unsigned int desc_count, unsigned int desc_size) -{ - int err; - - cq->index = index; - cq->vdev = vdev; - - cq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_CQ, index); - if (!cq->ctrl) { - pr_err("Failed to hook CQ[%d] resource\n", index); - return -EINVAL; - } - - err = vnic_dev_alloc_desc_ring(vdev, &cq->ring, desc_count, desc_size); - if (err) - return err; - - return 0; -} - -void vnic_cq_init(struct vnic_cq *cq, unsigned int flow_control_enable, - unsigned int color_enable, unsigned int cq_head, unsigned int cq_tail, - unsigned int cq_tail_color, unsigned int interrupt_enable, - unsigned int cq_entry_enable, unsigned int cq_message_enable, - unsigned int interrupt_offset, u64 cq_message_addr) -{ - u64 paddr; - - paddr = (u64)cq->ring.base_addr | VNIC_PADDR_TARGET; - writeq(paddr, &cq->ctrl->ring_base); - iowrite32(cq->ring.desc_count, &cq->ctrl->ring_size); - iowrite32(flow_control_enable, &cq->ctrl->flow_control_enable); - iowrite32(color_enable, &cq->ctrl->color_enable); - iowrite32(cq_head, &cq->ctrl->cq_head); - iowrite32(cq_tail, &cq->ctrl->cq_tail); - iowrite32(cq_tail_color, &cq->ctrl->cq_tail_color); - iowrite32(interrupt_enable, &cq->ctrl->interrupt_enable); - iowrite32(cq_entry_enable, &cq->ctrl->cq_entry_enable); - iowrite32(cq_message_enable, &cq->ctrl->cq_message_enable); - iowrite32(interrupt_offset, &cq->ctrl->interrupt_offset); - writeq(cq_message_addr, &cq->ctrl->cq_message_addr); - - cq->interrupt_offset = interrupt_offset; -} - -void vnic_cq_clean(struct vnic_cq *cq) -{ - cq->to_clean = 0; - cq->last_color = 0; - - iowrite32(0, &cq->ctrl->cq_head); - iowrite32(0, &cq->ctrl->cq_tail); - iowrite32(1, &cq->ctrl->cq_tail_color); - - vnic_dev_clear_desc_ring(&cq->ring); -} diff --git a/drivers/net/enic/vnic_cq.h b/drivers/net/enic/vnic_cq.h deleted file mode 100644 index 579315cbe80..00000000000 --- a/drivers/net/enic/vnic_cq.h +++ /dev/null @@ -1,114 +0,0 @@ -/* - * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. - * Copyright 2007 Nuova Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#ifndef _VNIC_CQ_H_ -#define _VNIC_CQ_H_ - -#include "cq_desc.h" -#include "vnic_dev.h" - -/* Completion queue control */ -struct vnic_cq_ctrl { - u64 ring_base; /* 0x00 */ - u32 ring_size; /* 0x08 */ - u32 pad0; - u32 flow_control_enable; /* 0x10 */ - u32 pad1; - u32 color_enable; /* 0x18 */ - u32 pad2; - u32 cq_head; /* 0x20 */ - u32 pad3; - u32 cq_tail; /* 0x28 */ - u32 pad4; - u32 cq_tail_color; /* 0x30 */ - u32 pad5; - u32 interrupt_enable; /* 0x38 */ - u32 pad6; - u32 cq_entry_enable; /* 0x40 */ - u32 pad7; - u32 cq_message_enable; /* 0x48 */ - u32 pad8; - u32 interrupt_offset; /* 0x50 */ - u32 pad9; - u64 cq_message_addr; /* 0x58 */ - u32 pad10; -}; - -struct vnic_cq { - unsigned int index; - struct vnic_dev *vdev; - struct vnic_cq_ctrl __iomem *ctrl; /* memory-mapped */ - struct vnic_dev_ring ring; - unsigned int to_clean; - unsigned int last_color; - unsigned int interrupt_offset; -}; - -static inline unsigned int vnic_cq_service(struct vnic_cq *cq, - unsigned int work_to_do, - int (*q_service)(struct vnic_dev *vdev, struct cq_desc *cq_desc, - u8 type, u16 q_number, u16 completed_index, void *opaque), - void *opaque) -{ - struct cq_desc *cq_desc; - unsigned int work_done = 0; - u16 q_number, completed_index; - u8 type, color; - - cq_desc = (struct cq_desc *)((u8 *)cq->ring.descs + - cq->ring.desc_size * cq->to_clean); - cq_desc_dec(cq_desc, &type, &color, - &q_number, &completed_index); - - while (color != cq->last_color) { - - if ((*q_service)(cq->vdev, cq_desc, type, - q_number, completed_index, opaque)) - break; - - cq->to_clean++; - if (cq->to_clean == cq->ring.desc_count) { - cq->to_clean = 0; - cq->last_color = cq->last_color ? 0 : 1; - } - - cq_desc = (struct cq_desc *)((u8 *)cq->ring.descs + - cq->ring.desc_size * cq->to_clean); - cq_desc_dec(cq_desc, &type, &color, - &q_number, &completed_index); - - work_done++; - if (work_done >= work_to_do) - break; - } - - return work_done; -} - -void vnic_cq_free(struct vnic_cq *cq); -int vnic_cq_alloc(struct vnic_dev *vdev, struct vnic_cq *cq, unsigned int index, - unsigned int desc_count, unsigned int desc_size); -void vnic_cq_init(struct vnic_cq *cq, unsigned int flow_control_enable, - unsigned int color_enable, unsigned int cq_head, unsigned int cq_tail, - unsigned int cq_tail_color, unsigned int interrupt_enable, - unsigned int cq_entry_enable, unsigned int message_enable, - unsigned int interrupt_offset, u64 message_addr); -void vnic_cq_clean(struct vnic_cq *cq); - -#endif /* _VNIC_CQ_H_ */ diff --git a/drivers/net/enic/vnic_dev.c b/drivers/net/enic/vnic_dev.c deleted file mode 100644 index 8c4c8cf486f..00000000000 --- a/drivers/net/enic/vnic_dev.c +++ /dev/null @@ -1,1003 +0,0 @@ -/* - * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. - * Copyright 2007 Nuova Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#include -#include -#include -#include -#include -#include - -#include "vnic_resource.h" -#include "vnic_devcmd.h" -#include "vnic_dev.h" -#include "vnic_stats.h" - -enum vnic_proxy_type { - PROXY_NONE, - PROXY_BY_BDF, -}; - -struct vnic_res { - void __iomem *vaddr; - dma_addr_t bus_addr; - unsigned int count; -}; - -struct vnic_intr_coal_timer_info { - u32 mul; - u32 div; - u32 max_usec; -}; - -struct vnic_dev { - void *priv; - struct pci_dev *pdev; - struct vnic_res res[RES_TYPE_MAX]; - enum vnic_dev_intr_mode intr_mode; - struct vnic_devcmd __iomem *devcmd; - struct vnic_devcmd_notify *notify; - struct vnic_devcmd_notify notify_copy; - dma_addr_t notify_pa; - u32 notify_sz; - dma_addr_t linkstatus_pa; - struct vnic_stats *stats; - dma_addr_t stats_pa; - struct vnic_devcmd_fw_info *fw_info; - dma_addr_t fw_info_pa; - enum vnic_proxy_type proxy; - u32 proxy_index; - u64 args[VNIC_DEVCMD_NARGS]; - struct vnic_intr_coal_timer_info intr_coal_timer_info; -}; - -#define VNIC_MAX_RES_HDR_SIZE \ - (sizeof(struct vnic_resource_header) + \ - sizeof(struct vnic_resource) * RES_TYPE_MAX) -#define VNIC_RES_STRIDE 128 - -void *vnic_dev_priv(struct vnic_dev *vdev) -{ - return vdev->priv; -} - -static int vnic_dev_discover_res(struct vnic_dev *vdev, - struct vnic_dev_bar *bar, unsigned int num_bars) -{ - struct vnic_resource_header __iomem *rh; - struct mgmt_barmap_hdr __iomem *mrh; - struct vnic_resource __iomem *r; - u8 type; - - if (num_bars == 0) - return -EINVAL; - - if (bar->len < VNIC_MAX_RES_HDR_SIZE) { - pr_err("vNIC BAR0 res hdr length error\n"); - return -EINVAL; - } - - rh = bar->vaddr; - mrh = bar->vaddr; - if (!rh) { - pr_err("vNIC BAR0 res hdr not mem-mapped\n"); - return -EINVAL; - } - - /* Check for mgmt vnic in addition to normal vnic */ - if ((ioread32(&rh->magic) != VNIC_RES_MAGIC) || - (ioread32(&rh->version) != VNIC_RES_VERSION)) { - if ((ioread32(&mrh->magic) != MGMTVNIC_MAGIC) || - (ioread32(&mrh->version) != MGMTVNIC_VERSION)) { - pr_err("vNIC BAR0 res magic/version error " - "exp (%lx/%lx) or (%lx/%lx), curr (%x/%x)\n", - VNIC_RES_MAGIC, VNIC_RES_VERSION, - MGMTVNIC_MAGIC, MGMTVNIC_VERSION, - ioread32(&rh->magic), ioread32(&rh->version)); - return -EINVAL; - } - } - - if (ioread32(&mrh->magic) == MGMTVNIC_MAGIC) - r = (struct vnic_resource __iomem *)(mrh + 1); - else - r = (struct vnic_resource __iomem *)(rh + 1); - - - while ((type = ioread8(&r->type)) != RES_TYPE_EOL) { - - u8 bar_num = ioread8(&r->bar); - u32 bar_offset = ioread32(&r->bar_offset); - u32 count = ioread32(&r->count); - u32 len; - - r++; - - if (bar_num >= num_bars) - continue; - - if (!bar[bar_num].len || !bar[bar_num].vaddr) - continue; - - switch (type) { - case RES_TYPE_WQ: - case RES_TYPE_RQ: - case RES_TYPE_CQ: - case RES_TYPE_INTR_CTRL: - /* each count is stride bytes long */ - len = count * VNIC_RES_STRIDE; - if (len + bar_offset > bar[bar_num].len) { - pr_err("vNIC BAR0 resource %d " - "out-of-bounds, offset 0x%x + " - "size 0x%x > bar len 0x%lx\n", - type, bar_offset, - len, - bar[bar_num].len); - return -EINVAL; - } - break; - case RES_TYPE_INTR_PBA_LEGACY: - case RES_TYPE_DEVCMD: - len = count; - break; - default: - continue; - } - - vdev->res[type].count = count; - vdev->res[type].vaddr = (char __iomem *)bar[bar_num].vaddr + - bar_offset; - vdev->res[type].bus_addr = bar[bar_num].bus_addr + bar_offset; - } - - return 0; -} - -unsigned int vnic_dev_get_res_count(struct vnic_dev *vdev, - enum vnic_res_type type) -{ - return vdev->res[type].count; -} - -void __iomem *vnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type, - unsigned int index) -{ - if (!vdev->res[type].vaddr) - return NULL; - - switch (type) { - case RES_TYPE_WQ: - case RES_TYPE_RQ: - case RES_TYPE_CQ: - case RES_TYPE_INTR_CTRL: - return (char __iomem *)vdev->res[type].vaddr + - index * VNIC_RES_STRIDE; - default: - return (char __iomem *)vdev->res[type].vaddr; - } -} - -static unsigned int vnic_dev_desc_ring_size(struct vnic_dev_ring *ring, - unsigned int desc_count, unsigned int desc_size) -{ - /* The base address of the desc rings must be 512 byte aligned. - * Descriptor count is aligned to groups of 32 descriptors. A - * count of 0 means the maximum 4096 descriptors. Descriptor - * size is aligned to 16 bytes. - */ - - unsigned int count_align = 32; - unsigned int desc_align = 16; - - ring->base_align = 512; - - if (desc_count == 0) - desc_count = 4096; - - ring->desc_count = ALIGN(desc_count, count_align); - - ring->desc_size = ALIGN(desc_size, desc_align); - - ring->size = ring->desc_count * ring->desc_size; - ring->size_unaligned = ring->size + ring->base_align; - - return ring->size_unaligned; -} - -void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring) -{ - memset(ring->descs, 0, ring->size); -} - -int vnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring, - unsigned int desc_count, unsigned int desc_size) -{ - vnic_dev_desc_ring_size(ring, desc_count, desc_size); - - ring->descs_unaligned = pci_alloc_consistent(vdev->pdev, - ring->size_unaligned, - &ring->base_addr_unaligned); - - if (!ring->descs_unaligned) { - pr_err("Failed to allocate ring (size=%d), aborting\n", - (int)ring->size); - return -ENOMEM; - } - - ring->base_addr = ALIGN(ring->base_addr_unaligned, - ring->base_align); - ring->descs = (u8 *)ring->descs_unaligned + - (ring->base_addr - ring->base_addr_unaligned); - - vnic_dev_clear_desc_ring(ring); - - ring->desc_avail = ring->desc_count - 1; - - return 0; -} - -void vnic_dev_free_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring) -{ - if (ring->descs) { - pci_free_consistent(vdev->pdev, - ring->size_unaligned, - ring->descs_unaligned, - ring->base_addr_unaligned); - ring->descs = NULL; - } -} - -static int _vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd, - int wait) -{ - struct vnic_devcmd __iomem *devcmd = vdev->devcmd; - unsigned int i; - int delay; - u32 status; - int err; - - status = ioread32(&devcmd->status); - if (status == 0xFFFFFFFF) { - /* PCI-e target device is gone */ - return -ENODEV; - } - if (status & STAT_BUSY) { - pr_err("Busy devcmd %d\n", _CMD_N(cmd)); - return -EBUSY; - } - - if (_CMD_DIR(cmd) & _CMD_DIR_WRITE) { - for (i = 0; i < VNIC_DEVCMD_NARGS; i++) - writeq(vdev->args[i], &devcmd->args[i]); - wmb(); - } - - iowrite32(cmd, &devcmd->cmd); - - if ((_CMD_FLAGS(cmd) & _CMD_FLAGS_NOWAIT)) - return 0; - - for (delay = 0; delay < wait; delay++) { - - udelay(100); - - status = ioread32(&devcmd->status); - if (status == 0xFFFFFFFF) { - /* PCI-e target device is gone */ - return -ENODEV; - } - - if (!(status & STAT_BUSY)) { - - if (status & STAT_ERROR) { - err = (int)readq(&devcmd->args[0]); - if (err != ERR_ECMDUNKNOWN || - cmd != CMD_CAPABILITY) - pr_err("Error %d devcmd %d\n", - err, _CMD_N(cmd)); - return err; - } - - if (_CMD_DIR(cmd) & _CMD_DIR_READ) { - rmb(); - for (i = 0; i < VNIC_DEVCMD_NARGS; i++) - vdev->args[i] = readq(&devcmd->args[i]); - } - - return 0; - } - } - - pr_err("Timedout devcmd %d\n", _CMD_N(cmd)); - return -ETIMEDOUT; -} - -static int vnic_dev_cmd_proxy_by_bdf(struct vnic_dev *vdev, - enum vnic_devcmd_cmd cmd, u64 *a0, u64 *a1, int wait) -{ - u32 status; - int err; - - memset(vdev->args, 0, sizeof(vdev->args)); - - vdev->args[0] = vdev->proxy_index; /* bdf */ - vdev->args[1] = cmd; - vdev->args[2] = *a0; - vdev->args[3] = *a1; - - err = _vnic_dev_cmd(vdev, CMD_PROXY_BY_BDF, wait); - if (err) - return err; - - status = (u32)vdev->args[0]; - if (status & STAT_ERROR) { - err = (int)vdev->args[1]; - if (err != ERR_ECMDUNKNOWN || - cmd != CMD_CAPABILITY) - pr_err("Error %d proxy devcmd %d\n", err, _CMD_N(cmd)); - return err; - } - - *a0 = vdev->args[1]; - *a1 = vdev->args[2]; - - return 0; -} - -static int vnic_dev_cmd_no_proxy(struct vnic_dev *vdev, - enum vnic_devcmd_cmd cmd, u64 *a0, u64 *a1, int wait) -{ - int err; - - vdev->args[0] = *a0; - vdev->args[1] = *a1; - - err = _vnic_dev_cmd(vdev, cmd, wait); - - *a0 = vdev->args[0]; - *a1 = vdev->args[1]; - - return err; -} - -int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd, - u64 *a0, u64 *a1, int wait) -{ - memset(vdev->args, 0, sizeof(vdev->args)); - - switch (vdev->proxy) { - case PROXY_BY_BDF: - return vnic_dev_cmd_proxy_by_bdf(vdev, cmd, a0, a1, wait); - case PROXY_NONE: - default: - return vnic_dev_cmd_no_proxy(vdev, cmd, a0, a1, wait); - } -} - -static int vnic_dev_capable(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd) -{ - u64 a0 = (u32)cmd, a1 = 0; - int wait = 1000; - int err; - - err = vnic_dev_cmd(vdev, CMD_CAPABILITY, &a0, &a1, wait); - - return !(err || a0); -} - -int vnic_dev_fw_info(struct vnic_dev *vdev, - struct vnic_devcmd_fw_info **fw_info) -{ - u64 a0, a1 = 0; - int wait = 1000; - int err = 0; - - if (!vdev->fw_info) { - vdev->fw_info = pci_alloc_consistent(vdev->pdev, - sizeof(struct vnic_devcmd_fw_info), - &vdev->fw_info_pa); - if (!vdev->fw_info) - return -ENOMEM; - - memset(vdev->fw_info, 0, sizeof(struct vnic_devcmd_fw_info)); - - a0 = vdev->fw_info_pa; - a1 = sizeof(struct vnic_devcmd_fw_info); - - /* only get fw_info once and cache it */ - err = vnic_dev_cmd(vdev, CMD_MCPU_FW_INFO, &a0, &a1, wait); - if (err == ERR_ECMDUNKNOWN) { - err = vnic_dev_cmd(vdev, CMD_MCPU_FW_INFO_OLD, - &a0, &a1, wait); - } - } - - *fw_info = vdev->fw_info; - - return err; -} - -int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, unsigned int size, - void *value) -{ - u64 a0, a1; - int wait = 1000; - int err; - - a0 = offset; - a1 = size; - - err = vnic_dev_cmd(vdev, CMD_DEV_SPEC, &a0, &a1, wait); - - switch (size) { - case 1: *(u8 *)value = (u8)a0; break; - case 2: *(u16 *)value = (u16)a0; break; - case 4: *(u32 *)value = (u32)a0; break; - case 8: *(u64 *)value = a0; break; - default: BUG(); break; - } - - return err; -} - -int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats) -{ - u64 a0, a1; - int wait = 1000; - - if (!vdev->stats) { - vdev->stats = pci_alloc_consistent(vdev->pdev, - sizeof(struct vnic_stats), &vdev->stats_pa); - if (!vdev->stats) - return -ENOMEM; - } - - *stats = vdev->stats; - a0 = vdev->stats_pa; - a1 = sizeof(struct vnic_stats); - - return vnic_dev_cmd(vdev, CMD_STATS_DUMP, &a0, &a1, wait); -} - -int vnic_dev_close(struct vnic_dev *vdev) -{ - u64 a0 = 0, a1 = 0; - int wait = 1000; - return vnic_dev_cmd(vdev, CMD_CLOSE, &a0, &a1, wait); -} - -int vnic_dev_enable_wait(struct vnic_dev *vdev) -{ - u64 a0 = 0, a1 = 0; - int wait = 1000; - int err; - - err = vnic_dev_cmd(vdev, CMD_ENABLE_WAIT, &a0, &a1, wait); - if (err == ERR_ECMDUNKNOWN) - return vnic_dev_cmd(vdev, CMD_ENABLE, &a0, &a1, wait); - - return err; -} - -int vnic_dev_disable(struct vnic_dev *vdev) -{ - u64 a0 = 0, a1 = 0; - int wait = 1000; - return vnic_dev_cmd(vdev, CMD_DISABLE, &a0, &a1, wait); -} - -int vnic_dev_open(struct vnic_dev *vdev, int arg) -{ - u64 a0 = (u32)arg, a1 = 0; - int wait = 1000; - return vnic_dev_cmd(vdev, CMD_OPEN, &a0, &a1, wait); -} - -int vnic_dev_open_done(struct vnic_dev *vdev, int *done) -{ - u64 a0 = 0, a1 = 0; - int wait = 1000; - int err; - - *done = 0; - - err = vnic_dev_cmd(vdev, CMD_OPEN_STATUS, &a0, &a1, wait); - if (err) - return err; - - *done = (a0 == 0); - - return 0; -} - -static int vnic_dev_soft_reset(struct vnic_dev *vdev, int arg) -{ - u64 a0 = (u32)arg, a1 = 0; - int wait = 1000; - return vnic_dev_cmd(vdev, CMD_SOFT_RESET, &a0, &a1, wait); -} - -static int vnic_dev_soft_reset_done(struct vnic_dev *vdev, int *done) -{ - u64 a0 = 0, a1 = 0; - int wait = 1000; - int err; - - *done = 0; - - err = vnic_dev_cmd(vdev, CMD_SOFT_RESET_STATUS, &a0, &a1, wait); - if (err) - return err; - - *done = (a0 == 0); - - return 0; -} - -int vnic_dev_hang_reset(struct vnic_dev *vdev, int arg) -{ - u64 a0 = (u32)arg, a1 = 0; - int wait = 1000; - int err; - - err = vnic_dev_cmd(vdev, CMD_HANG_RESET, &a0, &a1, wait); - if (err == ERR_ECMDUNKNOWN) { - err = vnic_dev_soft_reset(vdev, arg); - if (err) - return err; - - return vnic_dev_init(vdev, 0); - } - - return err; -} - -int vnic_dev_hang_reset_done(struct vnic_dev *vdev, int *done) -{ - u64 a0 = 0, a1 = 0; - int wait = 1000; - int err; - - *done = 0; - - err = vnic_dev_cmd(vdev, CMD_HANG_RESET_STATUS, &a0, &a1, wait); - if (err) { - if (err == ERR_ECMDUNKNOWN) - return vnic_dev_soft_reset_done(vdev, done); - return err; - } - - *done = (a0 == 0); - - return 0; -} - -int vnic_dev_hang_notify(struct vnic_dev *vdev) -{ - u64 a0, a1; - int wait = 1000; - return vnic_dev_cmd(vdev, CMD_HANG_NOTIFY, &a0, &a1, wait); -} - -int vnic_dev_mac_addr(struct vnic_dev *vdev, u8 *mac_addr) -{ - u64 a0, a1; - int wait = 1000; - int err, i; - - for (i = 0; i < ETH_ALEN; i++) - mac_addr[i] = 0; - - err = vnic_dev_cmd(vdev, CMD_MAC_ADDR, &a0, &a1, wait); - if (err) - return err; - - for (i = 0; i < ETH_ALEN; i++) - mac_addr[i] = ((u8 *)&a0)[i]; - - return 0; -} - -int vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast, - int broadcast, int promisc, int allmulti) -{ - u64 a0, a1 = 0; - int wait = 1000; - int err; - - a0 = (directed ? CMD_PFILTER_DIRECTED : 0) | - (multicast ? CMD_PFILTER_MULTICAST : 0) | - (broadcast ? CMD_PFILTER_BROADCAST : 0) | - (promisc ? CMD_PFILTER_PROMISCUOUS : 0) | - (allmulti ? CMD_PFILTER_ALL_MULTICAST : 0); - - err = vnic_dev_cmd(vdev, CMD_PACKET_FILTER, &a0, &a1, wait); - if (err) - pr_err("Can't set packet filter\n"); - - return err; -} - -int vnic_dev_add_addr(struct vnic_dev *vdev, u8 *addr) -{ - u64 a0 = 0, a1 = 0; - int wait = 1000; - int err; - int i; - - for (i = 0; i < ETH_ALEN; i++) - ((u8 *)&a0)[i] = addr[i]; - - err = vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait); - if (err) - pr_err("Can't add addr [%pM], %d\n", addr, err); - - return err; -} - -int vnic_dev_del_addr(struct vnic_dev *vdev, u8 *addr) -{ - u64 a0 = 0, a1 = 0; - int wait = 1000; - int err; - int i; - - for (i = 0; i < ETH_ALEN; i++) - ((u8 *)&a0)[i] = addr[i]; - - err = vnic_dev_cmd(vdev, CMD_ADDR_DEL, &a0, &a1, wait); - if (err) - pr_err("Can't del addr [%pM], %d\n", addr, err); - - return err; -} - -int vnic_dev_set_ig_vlan_rewrite_mode(struct vnic_dev *vdev, - u8 ig_vlan_rewrite_mode) -{ - u64 a0 = ig_vlan_rewrite_mode, a1 = 0; - int wait = 1000; - int err; - - err = vnic_dev_cmd(vdev, CMD_IG_VLAN_REWRITE_MODE, &a0, &a1, wait); - if (err == ERR_ECMDUNKNOWN) - return 0; - - return err; -} - -static int vnic_dev_notify_setcmd(struct vnic_dev *vdev, - void *notify_addr, dma_addr_t notify_pa, u16 intr) -{ - u64 a0, a1; - int wait = 1000; - int r; - - memset(notify_addr, 0, sizeof(struct vnic_devcmd_notify)); - vdev->notify = notify_addr; - vdev->notify_pa = notify_pa; - - a0 = (u64)notify_pa; - a1 = ((u64)intr << 32) & 0x0000ffff00000000ULL; - a1 += sizeof(struct vnic_devcmd_notify); - - r = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait); - vdev->notify_sz = (r == 0) ? (u32)a1 : 0; - return r; -} - -int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr) -{ - void *notify_addr; - dma_addr_t notify_pa; - - if (vdev->notify || vdev->notify_pa) { - pr_err("notify block %p still allocated", vdev->notify); - return -EINVAL; - } - - notify_addr = pci_alloc_consistent(vdev->pdev, - sizeof(struct vnic_devcmd_notify), - ¬ify_pa); - if (!notify_addr) - return -ENOMEM; - - return vnic_dev_notify_setcmd(vdev, notify_addr, notify_pa, intr); -} - -static int vnic_dev_notify_unsetcmd(struct vnic_dev *vdev) -{ - u64 a0, a1; - int wait = 1000; - int err; - - a0 = 0; /* paddr = 0 to unset notify buffer */ - a1 = 0x0000ffff00000000ULL; /* intr num = -1 to unreg for intr */ - a1 += sizeof(struct vnic_devcmd_notify); - - err = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait); - vdev->notify = NULL; - vdev->notify_pa = 0; - vdev->notify_sz = 0; - - return err; -} - -int vnic_dev_notify_unset(struct vnic_dev *vdev) -{ - if (vdev->notify) { - pci_free_consistent(vdev->pdev, - sizeof(struct vnic_devcmd_notify), - vdev->notify, - vdev->notify_pa); - } - - return vnic_dev_notify_unsetcmd(vdev); -} - -static int vnic_dev_notify_ready(struct vnic_dev *vdev) -{ - u32 *words; - unsigned int nwords = vdev->notify_sz / 4; - unsigned int i; - u32 csum; - - if (!vdev->notify || !vdev->notify_sz) - return 0; - - do { - csum = 0; - memcpy(&vdev->notify_copy, vdev->notify, vdev->notify_sz); - words = (u32 *)&vdev->notify_copy; - for (i = 1; i < nwords; i++) - csum += words[i]; - } while (csum != words[0]); - - return 1; -} - -int vnic_dev_init(struct vnic_dev *vdev, int arg) -{ - u64 a0 = (u32)arg, a1 = 0; - int wait = 1000; - int r = 0; - - if (vnic_dev_capable(vdev, CMD_INIT)) - r = vnic_dev_cmd(vdev, CMD_INIT, &a0, &a1, wait); - else { - vnic_dev_cmd(vdev, CMD_INIT_v1, &a0, &a1, wait); - if (a0 & CMD_INITF_DEFAULT_MAC) { - /* Emulate these for old CMD_INIT_v1 which - * didn't pass a0 so no CMD_INITF_*. - */ - vnic_dev_cmd(vdev, CMD_MAC_ADDR, &a0, &a1, wait); - vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait); - } - } - return r; -} - -int vnic_dev_deinit(struct vnic_dev *vdev) -{ - u64 a0 = 0, a1 = 0; - int wait = 1000; - - return vnic_dev_cmd(vdev, CMD_DEINIT, &a0, &a1, wait); -} - -void vnic_dev_intr_coal_timer_info_default(struct vnic_dev *vdev) -{ - /* Default: hardware intr coal timer is in units of 1.5 usecs */ - vdev->intr_coal_timer_info.mul = 2; - vdev->intr_coal_timer_info.div = 3; - vdev->intr_coal_timer_info.max_usec = - vnic_dev_intr_coal_timer_hw_to_usec(vdev, 0xffff); -} - -int vnic_dev_intr_coal_timer_info(struct vnic_dev *vdev) -{ - int wait = 1000; - int err; - - memset(vdev->args, 0, sizeof(vdev->args)); - - err = _vnic_dev_cmd(vdev, CMD_INTR_COAL_CONVERT, wait); - - /* Use defaults when firmware doesn't support the devcmd at all or - * supports it for only specific hardware - */ - if ((err == ERR_ECMDUNKNOWN) || - (!err && !(vdev->args[0] && vdev->args[1] && vdev->args[2]))) { - pr_warning("Using default conversion factor for " - "interrupt coalesce timer\n"); - vnic_dev_intr_coal_timer_info_default(vdev); - return 0; - } - - vdev->intr_coal_timer_info.mul = (u32) vdev->args[0]; - vdev->intr_coal_timer_info.div = (u32) vdev->args[1]; - vdev->intr_coal_timer_info.max_usec = (u32) vdev->args[2]; - - return err; -} - -int vnic_dev_link_status(struct vnic_dev *vdev) -{ - if (!vnic_dev_notify_ready(vdev)) - return 0; - - return vdev->notify_copy.link_state; -} - -u32 vnic_dev_port_speed(struct vnic_dev *vdev) -{ - if (!vnic_dev_notify_ready(vdev)) - return 0; - - return vdev->notify_copy.port_speed; -} - -u32 vnic_dev_msg_lvl(struct vnic_dev *vdev) -{ - if (!vnic_dev_notify_ready(vdev)) - return 0; - - return vdev->notify_copy.msglvl; -} - -u32 vnic_dev_mtu(struct vnic_dev *vdev) -{ - if (!vnic_dev_notify_ready(vdev)) - return 0; - - return vdev->notify_copy.mtu; -} - -void vnic_dev_set_intr_mode(struct vnic_dev *vdev, - enum vnic_dev_intr_mode intr_mode) -{ - vdev->intr_mode = intr_mode; -} - -enum vnic_dev_intr_mode vnic_dev_get_intr_mode( - struct vnic_dev *vdev) -{ - return vdev->intr_mode; -} - -u32 vnic_dev_intr_coal_timer_usec_to_hw(struct vnic_dev *vdev, u32 usec) -{ - return (usec * vdev->intr_coal_timer_info.mul) / - vdev->intr_coal_timer_info.div; -} - -u32 vnic_dev_intr_coal_timer_hw_to_usec(struct vnic_dev *vdev, u32 hw_cycles) -{ - return (hw_cycles * vdev->intr_coal_timer_info.div) / - vdev->intr_coal_timer_info.mul; -} - -u32 vnic_dev_get_intr_coal_timer_max(struct vnic_dev *vdev) -{ - return vdev->intr_coal_timer_info.max_usec; -} - -void vnic_dev_unregister(struct vnic_dev *vdev) -{ - if (vdev) { - if (vdev->notify) - pci_free_consistent(vdev->pdev, - sizeof(struct vnic_devcmd_notify), - vdev->notify, - vdev->notify_pa); - if (vdev->stats) - pci_free_consistent(vdev->pdev, - sizeof(struct vnic_stats), - vdev->stats, vdev->stats_pa); - if (vdev->fw_info) - pci_free_consistent(vdev->pdev, - sizeof(struct vnic_devcmd_fw_info), - vdev->fw_info, vdev->fw_info_pa); - kfree(vdev); - } -} - -struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev, - void *priv, struct pci_dev *pdev, struct vnic_dev_bar *bar, - unsigned int num_bars) -{ - if (!vdev) { - vdev = kzalloc(sizeof(struct vnic_dev), GFP_ATOMIC); - if (!vdev) - return NULL; - } - - vdev->priv = priv; - vdev->pdev = pdev; - - if (vnic_dev_discover_res(vdev, bar, num_bars)) - goto err_out; - - vdev->devcmd = vnic_dev_get_res(vdev, RES_TYPE_DEVCMD, 0); - if (!vdev->devcmd) - goto err_out; - - return vdev; - -err_out: - vnic_dev_unregister(vdev); - return NULL; -} - -int vnic_dev_init_prov2(struct vnic_dev *vdev, u8 *buf, u32 len) -{ - u64 a0, a1 = len; - int wait = 1000; - dma_addr_t prov_pa; - void *prov_buf; - int ret; - - prov_buf = pci_alloc_consistent(vdev->pdev, len, &prov_pa); - if (!prov_buf) - return -ENOMEM; - - memcpy(prov_buf, buf, len); - - a0 = prov_pa; - - ret = vnic_dev_cmd(vdev, CMD_INIT_PROV_INFO2, &a0, &a1, wait); - - pci_free_consistent(vdev->pdev, len, prov_buf, prov_pa); - - return ret; -} - -int vnic_dev_enable2(struct vnic_dev *vdev, int active) -{ - u64 a0, a1 = 0; - int wait = 1000; - - a0 = (active ? CMD_ENABLE2_ACTIVE : 0); - - return vnic_dev_cmd(vdev, CMD_ENABLE2, &a0, &a1, wait); -} - -static int vnic_dev_cmd_status(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd, - int *status) -{ - u64 a0 = cmd, a1 = 0; - int wait = 1000; - int ret; - - ret = vnic_dev_cmd(vdev, CMD_STATUS, &a0, &a1, wait); - if (!ret) - *status = (int)a0; - - return ret; -} - -int vnic_dev_enable2_done(struct vnic_dev *vdev, int *status) -{ - return vnic_dev_cmd_status(vdev, CMD_ENABLE2, status); -} - -int vnic_dev_deinit_done(struct vnic_dev *vdev, int *status) -{ - return vnic_dev_cmd_status(vdev, CMD_DEINIT, status); -} diff --git a/drivers/net/enic/vnic_dev.h b/drivers/net/enic/vnic_dev.h deleted file mode 100644 index 852b698fbe7..00000000000 --- a/drivers/net/enic/vnic_dev.h +++ /dev/null @@ -1,133 +0,0 @@ -/* - * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. - * Copyright 2007 Nuova Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#ifndef _VNIC_DEV_H_ -#define _VNIC_DEV_H_ - -#include "vnic_resource.h" -#include "vnic_devcmd.h" - -#ifndef VNIC_PADDR_TARGET -#define VNIC_PADDR_TARGET 0x0000000000000000ULL -#endif - -#ifndef readq -static inline u64 readq(void __iomem *reg) -{ - return (((u64)readl(reg + 0x4UL) << 32) | - (u64)readl(reg)); -} - -static inline void writeq(u64 val, void __iomem *reg) -{ - writel(val & 0xffffffff, reg); - writel(val >> 32, reg + 0x4UL); -} -#endif - -#undef pr_fmt -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -enum vnic_dev_intr_mode { - VNIC_DEV_INTR_MODE_UNKNOWN, - VNIC_DEV_INTR_MODE_INTX, - VNIC_DEV_INTR_MODE_MSI, - VNIC_DEV_INTR_MODE_MSIX, -}; - -struct vnic_dev_bar { - void __iomem *vaddr; - dma_addr_t bus_addr; - unsigned long len; -}; - -struct vnic_dev_ring { - void *descs; - size_t size; - dma_addr_t base_addr; - size_t base_align; - void *descs_unaligned; - size_t size_unaligned; - dma_addr_t base_addr_unaligned; - unsigned int desc_size; - unsigned int desc_count; - unsigned int desc_avail; -}; - -struct vnic_dev; -struct vnic_stats; - -void *vnic_dev_priv(struct vnic_dev *vdev); -unsigned int vnic_dev_get_res_count(struct vnic_dev *vdev, - enum vnic_res_type type); -void __iomem *vnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type, - unsigned int index); -void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring); -int vnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring, - unsigned int desc_count, unsigned int desc_size); -void vnic_dev_free_desc_ring(struct vnic_dev *vdev, - struct vnic_dev_ring *ring); -int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd, - u64 *a0, u64 *a1, int wait); -int vnic_dev_fw_info(struct vnic_dev *vdev, - struct vnic_devcmd_fw_info **fw_info); -int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, unsigned int size, - void *value); -int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats); -int vnic_dev_hang_notify(struct vnic_dev *vdev); -int vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast, - int broadcast, int promisc, int allmulti); -int vnic_dev_add_addr(struct vnic_dev *vdev, u8 *addr); -int vnic_dev_del_addr(struct vnic_dev *vdev, u8 *addr); -int vnic_dev_mac_addr(struct vnic_dev *vdev, u8 *mac_addr); -int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr); -int vnic_dev_notify_unset(struct vnic_dev *vdev); -int vnic_dev_link_status(struct vnic_dev *vdev); -u32 vnic_dev_port_speed(struct vnic_dev *vdev); -u32 vnic_dev_msg_lvl(struct vnic_dev *vdev); -u32 vnic_dev_mtu(struct vnic_dev *vdev); -int vnic_dev_close(struct vnic_dev *vdev); -int vnic_dev_enable_wait(struct vnic_dev *vdev); -int vnic_dev_disable(struct vnic_dev *vdev); -int vnic_dev_open(struct vnic_dev *vdev, int arg); -int vnic_dev_open_done(struct vnic_dev *vdev, int *done); -int vnic_dev_init(struct vnic_dev *vdev, int arg); -int vnic_dev_deinit(struct vnic_dev *vdev); -void vnic_dev_intr_coal_timer_info_default(struct vnic_dev *vdev); -int vnic_dev_intr_coal_timer_info(struct vnic_dev *vdev); -int vnic_dev_hang_reset(struct vnic_dev *vdev, int arg); -int vnic_dev_hang_reset_done(struct vnic_dev *vdev, int *done); -void vnic_dev_set_intr_mode(struct vnic_dev *vdev, - enum vnic_dev_intr_mode intr_mode); -enum vnic_dev_intr_mode vnic_dev_get_intr_mode(struct vnic_dev *vdev); -u32 vnic_dev_intr_coal_timer_usec_to_hw(struct vnic_dev *vdev, u32 usec); -u32 vnic_dev_intr_coal_timer_hw_to_usec(struct vnic_dev *vdev, u32 hw_cycles); -u32 vnic_dev_get_intr_coal_timer_max(struct vnic_dev *vdev); -void vnic_dev_unregister(struct vnic_dev *vdev); -int vnic_dev_set_ig_vlan_rewrite_mode(struct vnic_dev *vdev, - u8 ig_vlan_rewrite_mode); -struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev, - void *priv, struct pci_dev *pdev, struct vnic_dev_bar *bar, - unsigned int num_bars); -int vnic_dev_init_prov2(struct vnic_dev *vdev, u8 *buf, u32 len); -int vnic_dev_enable2(struct vnic_dev *vdev, int active); -int vnic_dev_enable2_done(struct vnic_dev *vdev, int *status); -int vnic_dev_deinit_done(struct vnic_dev *vdev, int *status); - -#endif /* _VNIC_DEV_H_ */ diff --git a/drivers/net/enic/vnic_devcmd.h b/drivers/net/enic/vnic_devcmd.h deleted file mode 100644 index 8025e8808d6..00000000000 --- a/drivers/net/enic/vnic_devcmd.h +++ /dev/null @@ -1,450 +0,0 @@ -/* - * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. - * Copyright 2007 Nuova Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#ifndef _VNIC_DEVCMD_H_ -#define _VNIC_DEVCMD_H_ - -#define _CMD_NBITS 14 -#define _CMD_VTYPEBITS 10 -#define _CMD_FLAGSBITS 6 -#define _CMD_DIRBITS 2 - -#define _CMD_NMASK ((1 << _CMD_NBITS)-1) -#define _CMD_VTYPEMASK ((1 << _CMD_VTYPEBITS)-1) -#define _CMD_FLAGSMASK ((1 << _CMD_FLAGSBITS)-1) -#define _CMD_DIRMASK ((1 << _CMD_DIRBITS)-1) - -#define _CMD_NSHIFT 0 -#define _CMD_VTYPESHIFT (_CMD_NSHIFT+_CMD_NBITS) -#define _CMD_FLAGSSHIFT (_CMD_VTYPESHIFT+_CMD_VTYPEBITS) -#define _CMD_DIRSHIFT (_CMD_FLAGSSHIFT+_CMD_FLAGSBITS) - -/* - * Direction bits (from host perspective). - */ -#define _CMD_DIR_NONE 0U -#define _CMD_DIR_WRITE 1U -#define _CMD_DIR_READ 2U -#define _CMD_DIR_RW (_CMD_DIR_WRITE | _CMD_DIR_READ) - -/* - * Flag bits. - */ -#define _CMD_FLAGS_NONE 0U -#define _CMD_FLAGS_NOWAIT 1U - -/* - * vNIC type bits. - */ -#define _CMD_VTYPE_NONE 0U -#define _CMD_VTYPE_ENET 1U -#define _CMD_VTYPE_FC 2U -#define _CMD_VTYPE_SCSI 4U -#define _CMD_VTYPE_ALL (_CMD_VTYPE_ENET | _CMD_VTYPE_FC | _CMD_VTYPE_SCSI) - -/* - * Used to create cmds.. -*/ -#define _CMDCF(dir, flags, vtype, nr) \ - (((dir) << _CMD_DIRSHIFT) | \ - ((flags) << _CMD_FLAGSSHIFT) | \ - ((vtype) << _CMD_VTYPESHIFT) | \ - ((nr) << _CMD_NSHIFT)) -#define _CMDC(dir, vtype, nr) _CMDCF(dir, 0, vtype, nr) -#define _CMDCNW(dir, vtype, nr) _CMDCF(dir, _CMD_FLAGS_NOWAIT, vtype, nr) - -/* - * Used to decode cmds.. -*/ -#define _CMD_DIR(cmd) (((cmd) >> _CMD_DIRSHIFT) & _CMD_DIRMASK) -#define _CMD_FLAGS(cmd) (((cmd) >> _CMD_FLAGSSHIFT) & _CMD_FLAGSMASK) -#define _CMD_VTYPE(cmd) (((cmd) >> _CMD_VTYPESHIFT) & _CMD_VTYPEMASK) -#define _CMD_N(cmd) (((cmd) >> _CMD_NSHIFT) & _CMD_NMASK) - -enum vnic_devcmd_cmd { - CMD_NONE = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_NONE, 0), - - /* - * mcpu fw info in mem: - * in: - * (u64)a0=paddr to struct vnic_devcmd_fw_info - * action: - * Fills in struct vnic_devcmd_fw_info (128 bytes) - * note: - * An old definition of CMD_MCPU_FW_INFO - */ - CMD_MCPU_FW_INFO_OLD = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 1), - - /* - * mcpu fw info in mem: - * in: - * (u64)a0=paddr to struct vnic_devcmd_fw_info - * (u16)a1=size of the structure - * out: - * (u16)a1=0 for in:a1 = 0, - * data size actually written for other values. - * action: - * Fills in first 128 bytes of vnic_devcmd_fw_info for in:a1 = 0, - * first in:a1 bytes for 0 < in:a1 <= 132, - * 132 bytes for other values of in:a1. - * note: - * CMD_MCPU_FW_INFO and CMD_MCPU_FW_INFO_OLD have the same enum 1 - * for source compatibility. - */ - CMD_MCPU_FW_INFO = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 1), - - /* dev-specific block member: - * in: (u16)a0=offset,(u8)a1=size - * out: a0=value */ - CMD_DEV_SPEC = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 2), - - /* stats clear */ - CMD_STATS_CLEAR = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 3), - - /* stats dump in mem: (u64)a0=paddr to stats area, - * (u16)a1=sizeof stats area */ - CMD_STATS_DUMP = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 4), - - /* set Rx packet filter: (u32)a0=filters (see CMD_PFILTER_*) */ - CMD_PACKET_FILTER = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 7), - - /* set Rx packet filter for all: (u32)a0=filters (see CMD_PFILTER_*) */ - CMD_PACKET_FILTER_ALL = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 7), - - /* hang detection notification */ - CMD_HANG_NOTIFY = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 8), - - /* MAC address in (u48)a0 */ - CMD_MAC_ADDR = _CMDC(_CMD_DIR_READ, - _CMD_VTYPE_ENET | _CMD_VTYPE_FC, 9), - - /* add addr from (u48)a0 */ - CMD_ADDR_ADD = _CMDCNW(_CMD_DIR_WRITE, - _CMD_VTYPE_ENET | _CMD_VTYPE_FC, 12), - - /* del addr from (u48)a0 */ - CMD_ADDR_DEL = _CMDCNW(_CMD_DIR_WRITE, - _CMD_VTYPE_ENET | _CMD_VTYPE_FC, 13), - - /* add VLAN id in (u16)a0 */ - CMD_VLAN_ADD = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 14), - - /* del VLAN id in (u16)a0 */ - CMD_VLAN_DEL = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 15), - - /* nic_cfg in (u32)a0 */ - CMD_NIC_CFG = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 16), - - /* union vnic_rss_key in mem: (u64)a0=paddr, (u16)a1=len */ - CMD_RSS_KEY = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 17), - - /* union vnic_rss_cpu in mem: (u64)a0=paddr, (u16)a1=len */ - CMD_RSS_CPU = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 18), - - /* initiate softreset */ - CMD_SOFT_RESET = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 19), - - /* softreset status: - * out: a0=0 reset complete, a0=1 reset in progress */ - CMD_SOFT_RESET_STATUS = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 20), - - /* set struct vnic_devcmd_notify buffer in mem: - * in: - * (u64)a0=paddr to notify (set paddr=0 to unset) - * (u32)a1 & 0x00000000ffffffff=sizeof(struct vnic_devcmd_notify) - * (u16)a1 & 0x0000ffff00000000=intr num (-1 for no intr) - * out: - * (u32)a1 = effective size - */ - CMD_NOTIFY = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 21), - - /* UNDI API: (u64)a0=paddr to s_PXENV_UNDI_ struct, - * (u8)a1=PXENV_UNDI_xxx */ - CMD_UNDI = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 22), - - /* initiate open sequence (u32)a0=flags (see CMD_OPENF_*) */ - CMD_OPEN = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 23), - - /* open status: - * out: a0=0 open complete, a0=1 open in progress */ - CMD_OPEN_STATUS = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 24), - - /* close vnic */ - CMD_CLOSE = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 25), - - /* initialize virtual link: (u32)a0=flags (see CMD_INITF_*) */ -/***** Replaced by CMD_INIT *****/ - CMD_INIT_v1 = _CMDCNW(_CMD_DIR_READ, _CMD_VTYPE_ALL, 26), - - /* variant of CMD_INIT, with provisioning info - * (u64)a0=paddr of vnic_devcmd_provinfo - * (u32)a1=sizeof provision info */ - CMD_INIT_PROV_INFO = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 27), - - /* enable virtual link */ - CMD_ENABLE = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 28), - - /* enable virtual link, waiting variant. */ - CMD_ENABLE_WAIT = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 28), - - /* disable virtual link */ - CMD_DISABLE = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 29), - - /* stats dump sum of all vnic stats on same uplink in mem: - * (u64)a0=paddr - * (u16)a1=sizeof stats area */ - CMD_STATS_DUMP_ALL = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 30), - - /* init status: - * out: a0=0 init complete, a0=1 init in progress - * if a0=0, a1=errno */ - CMD_INIT_STATUS = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 31), - - /* INT13 API: (u64)a0=paddr to vnic_int13_params struct - * (u32)a1=INT13_CMD_xxx */ - CMD_INT13 = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_FC, 32), - - /* logical uplink enable/disable: (u64)a0: 0/1=disable/enable */ - CMD_LOGICAL_UPLINK = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 33), - - /* undo initialize of virtual link */ - CMD_DEINIT = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 34), - - /* initialize virtual link: (u32)a0=flags (see CMD_INITF_*) */ - CMD_INIT = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 35), - - /* check fw capability of a cmd: - * in: (u32)a0=cmd - * out: (u32)a0=errno, 0:valid cmd, a1=supported VNIC_STF_* bits */ - CMD_CAPABILITY = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 36), - - /* persistent binding info - * in: (u64)a0=paddr of arg - * (u32)a1=CMD_PERBI_XXX */ - CMD_PERBI = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_FC, 37), - - /* Interrupt Assert Register functionality - * in: (u16)a0=interrupt number to assert - */ - CMD_IAR = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 38), - - /* initiate hangreset, like softreset after hang detected */ - CMD_HANG_RESET = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 39), - - /* hangreset status: - * out: a0=0 reset complete, a0=1 reset in progress */ - CMD_HANG_RESET_STATUS = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 40), - - /* - * Set hw ingress packet vlan rewrite mode: - * in: (u32)a0=new vlan rewrite mode - * out: (u32)a0=old vlan rewrite mode */ - CMD_IG_VLAN_REWRITE_MODE = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ENET, 41), - - /* - * in: (u16)a0=bdf of target vnic - * (u32)a1=cmd to proxy - * a2-a15=args to cmd in a1 - * out: (u32)a0=status of proxied cmd - * a1-a15=out args of proxied cmd */ - CMD_PROXY_BY_BDF = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 42), - - /* - * As for BY_BDF except a0 is index of hvnlink subordinate vnic - * or SR-IOV virtual vnic - */ - CMD_PROXY_BY_INDEX = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 43), - - /* - * For HPP toggle: - * adapter-info-get - * in: (u64)a0=phsical address of buffer passed in from caller. - * (u16)a1=size of buffer specified in a0. - * out: (u64)a0=phsical address of buffer passed in from caller. - * (u16)a1=actual bytes from VIF-CONFIG-INFO TLV, or - * 0 if no VIF-CONFIG-INFO TLV was ever received. */ - CMD_CONFIG_INFO_GET = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 44), - - /* init_prov_info2: - * Variant of CMD_INIT_PROV_INFO, where it will not try to enable - * the vnic until CMD_ENABLE2 is issued. - * (u64)a0=paddr of vnic_devcmd_provinfo - * (u32)a1=sizeof provision info */ - CMD_INIT_PROV_INFO2 = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 47), - - /* enable2: - * (u32)a0=0 ==> standby - * =CMD_ENABLE2_ACTIVE ==> active - */ - CMD_ENABLE2 = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 48), - - /* - * cmd_status: - * Returns the status of the specified command - * Input: - * a0 = command for which status is being queried. - * Possible values are: - * CMD_SOFT_RESET - * CMD_HANG_RESET - * CMD_OPEN - * CMD_INIT - * CMD_INIT_PROV_INFO - * CMD_DEINIT - * CMD_INIT_PROV_INFO2 - * CMD_ENABLE2 - * Output: - * if status == STAT_ERROR - * a0 = ERR_ENOTSUPPORTED - status for command in a0 is - * not supported - * if status == STAT_NONE - * a0 = status of the devcmd specified in a0 as follows. - * ERR_SUCCESS - command in a0 completed successfully - * ERR_EINPROGRESS - command in a0 is still in progress - */ - CMD_STATUS = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 49), - - /* - * Returns interrupt coalescing timer conversion factors. - * After calling this devcmd, ENIC driver can convert - * interrupt coalescing timer in usec into CPU cycles as follows: - * - * intr_timer_cycles = intr_timer_usec * multiplier / divisor - * - * Interrupt coalescing timer in usecs can be obtained from - * CPU cycles as follows: - * - * intr_timer_usec = intr_timer_cycles * divisor / multiplier - * - * in: none - * out: (u32)a0 = multiplier - * (u32)a1 = divisor - * (u32)a2 = maximum timer value in usec - */ - CMD_INTR_COAL_CONVERT = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 50), -}; - -/* CMD_ENABLE2 flags */ -#define CMD_ENABLE2_ACTIVE 0x1 - -/* flags for CMD_OPEN */ -#define CMD_OPENF_OPROM 0x1 /* open coming from option rom */ - -/* flags for CMD_INIT */ -#define CMD_INITF_DEFAULT_MAC 0x1 /* init with default mac addr */ - -/* flags for CMD_PACKET_FILTER */ -#define CMD_PFILTER_DIRECTED 0x01 -#define CMD_PFILTER_MULTICAST 0x02 -#define CMD_PFILTER_BROADCAST 0x04 -#define CMD_PFILTER_PROMISCUOUS 0x08 -#define CMD_PFILTER_ALL_MULTICAST 0x10 - -/* rewrite modes for CMD_IG_VLAN_REWRITE_MODE */ -#define IG_VLAN_REWRITE_MODE_DEFAULT_TRUNK 0 -#define IG_VLAN_REWRITE_MODE_UNTAG_DEFAULT_VLAN 1 -#define IG_VLAN_REWRITE_MODE_PRIORITY_TAG_DEFAULT_VLAN 2 -#define IG_VLAN_REWRITE_MODE_PASS_THRU 3 - -enum vnic_devcmd_status { - STAT_NONE = 0, - STAT_BUSY = 1 << 0, /* cmd in progress */ - STAT_ERROR = 1 << 1, /* last cmd caused error (code in a0) */ -}; - -enum vnic_devcmd_error { - ERR_SUCCESS = 0, - ERR_EINVAL = 1, - ERR_EFAULT = 2, - ERR_EPERM = 3, - ERR_EBUSY = 4, - ERR_ECMDUNKNOWN = 5, - ERR_EBADSTATE = 6, - ERR_ENOMEM = 7, - ERR_ETIMEDOUT = 8, - ERR_ELINKDOWN = 9, - ERR_EMAXRES = 10, - ERR_ENOTSUPPORTED = 11, - ERR_EINPROGRESS = 12, -}; - -/* - * note: hw_version and asic_rev refer to the same thing, - * but have different formats. hw_version is - * a 32-byte string (e.g. "A2") and asic_rev is - * a 16-bit integer (e.g. 0xA2). - */ -struct vnic_devcmd_fw_info { - char fw_version[32]; - char fw_build[32]; - char hw_version[32]; - char hw_serial_number[32]; - u16 asic_type; - u16 asic_rev; -}; - -struct vnic_devcmd_notify { - u32 csum; /* checksum over following words */ - - u32 link_state; /* link up == 1 */ - u32 port_speed; /* effective port speed (rate limit) */ - u32 mtu; /* MTU */ - u32 msglvl; /* requested driver msg lvl */ - u32 uif; /* uplink interface */ - u32 status; /* status bits (see VNIC_STF_*) */ - u32 error; /* error code (see ERR_*) for first ERR */ - u32 link_down_cnt; /* running count of link down transitions */ - u32 perbi_rebuild_cnt; /* running count of perbi rebuilds */ -}; -#define VNIC_STF_FATAL_ERR 0x0001 /* fatal fw error */ -#define VNIC_STF_STD_PAUSE 0x0002 /* standard link-level pause on */ -#define VNIC_STF_PFC_PAUSE 0x0004 /* priority flow control pause on */ -/* all supported status flags */ -#define VNIC_STF_ALL (VNIC_STF_FATAL_ERR |\ - VNIC_STF_STD_PAUSE |\ - VNIC_STF_PFC_PAUSE |\ - 0) - -struct vnic_devcmd_provinfo { - u8 oui[3]; - u8 type; - u8 data[0]; -}; - -/* - * Writing cmd register causes STAT_BUSY to get set in status register. - * When cmd completes, STAT_BUSY will be cleared. - * - * If cmd completed successfully STAT_ERROR will be clear - * and args registers contain cmd-specific results. - * - * If cmd error, STAT_ERROR will be set and args[0] contains error code. - * - * status register is read-only. While STAT_BUSY is set, - * all other register contents are read-only. - */ - -/* Make sizeof(vnic_devcmd) a power-of-2 for I/O BAR. */ -#define VNIC_DEVCMD_NARGS 15 -struct vnic_devcmd { - u32 status; /* RO */ - u32 cmd; /* RW */ - u64 args[VNIC_DEVCMD_NARGS]; /* RW cmd args (little-endian) */ -}; - -#endif /* _VNIC_DEVCMD_H_ */ diff --git a/drivers/net/enic/vnic_enet.h b/drivers/net/enic/vnic_enet.h deleted file mode 100644 index 609542848e0..00000000000 --- a/drivers/net/enic/vnic_enet.h +++ /dev/null @@ -1,57 +0,0 @@ -/* - * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. - * Copyright 2007 Nuova Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#ifndef _VNIC_ENIC_H_ -#define _VNIC_ENIC_H_ - -/* Device-specific region: enet configuration */ -struct vnic_enet_config { - u32 flags; - u32 wq_desc_count; - u32 rq_desc_count; - u16 mtu; - u16 intr_timer_deprecated; - u8 intr_timer_type; - u8 intr_mode; - char devname[16]; - u32 intr_timer_usec; - u16 loop_tag; -}; - -#define VENETF_TSO 0x1 /* TSO enabled */ -#define VENETF_LRO 0x2 /* LRO enabled */ -#define VENETF_RXCSUM 0x4 /* RX csum enabled */ -#define VENETF_TXCSUM 0x8 /* TX csum enabled */ -#define VENETF_RSS 0x10 /* RSS enabled */ -#define VENETF_RSSHASH_IPV4 0x20 /* Hash on IPv4 fields */ -#define VENETF_RSSHASH_TCPIPV4 0x40 /* Hash on TCP + IPv4 fields */ -#define VENETF_RSSHASH_IPV6 0x80 /* Hash on IPv6 fields */ -#define VENETF_RSSHASH_TCPIPV6 0x100 /* Hash on TCP + IPv6 fields */ -#define VENETF_RSSHASH_IPV6_EX 0x200 /* Hash on IPv6 extended fields */ -#define VENETF_RSSHASH_TCPIPV6_EX 0x400 /* Hash on TCP + IPv6 ext. fields */ -#define VENETF_LOOP 0x800 /* Loopback enabled */ - -#define VENET_INTR_TYPE_MIN 0 /* Timer specs min interrupt spacing */ -#define VENET_INTR_TYPE_IDLE 1 /* Timer specs idle time before irq */ - -#define VENET_INTR_MODE_ANY 0 /* Try MSI-X, then MSI, then INTx */ -#define VENET_INTR_MODE_MSI 1 /* Try MSI then INTx */ -#define VENET_INTR_MODE_INTX 2 /* Try INTx only */ - -#endif /* _VNIC_ENIC_H_ */ diff --git a/drivers/net/enic/vnic_intr.c b/drivers/net/enic/vnic_intr.c deleted file mode 100644 index 0ca107f7bc8..00000000000 --- a/drivers/net/enic/vnic_intr.c +++ /dev/null @@ -1,68 +0,0 @@ -/* - * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. - * Copyright 2007 Nuova Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#include -#include -#include -#include -#include - -#include "vnic_dev.h" -#include "vnic_intr.h" - -void vnic_intr_free(struct vnic_intr *intr) -{ - intr->ctrl = NULL; -} - -int vnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr, - unsigned int index) -{ - intr->index = index; - intr->vdev = vdev; - - intr->ctrl = vnic_dev_get_res(vdev, RES_TYPE_INTR_CTRL, index); - if (!intr->ctrl) { - pr_err("Failed to hook INTR[%d].ctrl resource\n", index); - return -EINVAL; - } - - return 0; -} - -void vnic_intr_init(struct vnic_intr *intr, u32 coalescing_timer, - unsigned int coalescing_type, unsigned int mask_on_assertion) -{ - vnic_intr_coalescing_timer_set(intr, coalescing_timer); - iowrite32(coalescing_type, &intr->ctrl->coalescing_type); - iowrite32(mask_on_assertion, &intr->ctrl->mask_on_assertion); - iowrite32(0, &intr->ctrl->int_credits); -} - -void vnic_intr_coalescing_timer_set(struct vnic_intr *intr, - u32 coalescing_timer) -{ - iowrite32(vnic_dev_intr_coal_timer_usec_to_hw(intr->vdev, - coalescing_timer), &intr->ctrl->coalescing_timer); -} - -void vnic_intr_clean(struct vnic_intr *intr) -{ - iowrite32(0, &intr->ctrl->int_credits); -} diff --git a/drivers/net/enic/vnic_intr.h b/drivers/net/enic/vnic_intr.h deleted file mode 100644 index 2b163639229..00000000000 --- a/drivers/net/enic/vnic_intr.h +++ /dev/null @@ -1,111 +0,0 @@ -/* - * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. - * Copyright 2007 Nuova Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#ifndef _VNIC_INTR_H_ -#define _VNIC_INTR_H_ - -#include - -#include "vnic_dev.h" - -#define VNIC_INTR_TIMER_TYPE_ABS 0 -#define VNIC_INTR_TIMER_TYPE_QUIET 1 - -/* Interrupt control */ -struct vnic_intr_ctrl { - u32 coalescing_timer; /* 0x00 */ - u32 pad0; - u32 coalescing_value; /* 0x08 */ - u32 pad1; - u32 coalescing_type; /* 0x10 */ - u32 pad2; - u32 mask_on_assertion; /* 0x18 */ - u32 pad3; - u32 mask; /* 0x20 */ - u32 pad4; - u32 int_credits; /* 0x28 */ - u32 pad5; - u32 int_credit_return; /* 0x30 */ - u32 pad6; -}; - -struct vnic_intr { - unsigned int index; - struct vnic_dev *vdev; - struct vnic_intr_ctrl __iomem *ctrl; /* memory-mapped */ -}; - -static inline void vnic_intr_unmask(struct vnic_intr *intr) -{ - iowrite32(0, &intr->ctrl->mask); -} - -static inline void vnic_intr_mask(struct vnic_intr *intr) -{ - iowrite32(1, &intr->ctrl->mask); -} - -static inline int vnic_intr_masked(struct vnic_intr *intr) -{ - return ioread32(&intr->ctrl->mask); -} - -static inline void vnic_intr_return_credits(struct vnic_intr *intr, - unsigned int credits, int unmask, int reset_timer) -{ -#define VNIC_INTR_UNMASK_SHIFT 16 -#define VNIC_INTR_RESET_TIMER_SHIFT 17 - - u32 int_credit_return = (credits & 0xffff) | - (unmask ? (1 << VNIC_INTR_UNMASK_SHIFT) : 0) | - (reset_timer ? (1 << VNIC_INTR_RESET_TIMER_SHIFT) : 0); - - iowrite32(int_credit_return, &intr->ctrl->int_credit_return); -} - -static inline unsigned int vnic_intr_credits(struct vnic_intr *intr) -{ - return ioread32(&intr->ctrl->int_credits); -} - -static inline void vnic_intr_return_all_credits(struct vnic_intr *intr) -{ - unsigned int credits = vnic_intr_credits(intr); - int unmask = 1; - int reset_timer = 1; - - vnic_intr_return_credits(intr, credits, unmask, reset_timer); -} - -static inline u32 vnic_intr_legacy_pba(u32 __iomem *legacy_pba) -{ - /* read PBA without clearing */ - return ioread32(legacy_pba); -} - -void vnic_intr_free(struct vnic_intr *intr); -int vnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr, - unsigned int index); -void vnic_intr_init(struct vnic_intr *intr, u32 coalescing_timer, - unsigned int coalescing_type, unsigned int mask_on_assertion); -void vnic_intr_coalescing_timer_set(struct vnic_intr *intr, - u32 coalescing_timer); -void vnic_intr_clean(struct vnic_intr *intr); - -#endif /* _VNIC_INTR_H_ */ diff --git a/drivers/net/enic/vnic_nic.h b/drivers/net/enic/vnic_nic.h deleted file mode 100644 index 995a50dd4c9..00000000000 --- a/drivers/net/enic/vnic_nic.h +++ /dev/null @@ -1,72 +0,0 @@ -/* - * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. - * Copyright 2007 Nuova Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#ifndef _VNIC_NIC_H_ -#define _VNIC_NIC_H_ - -#define NIC_CFG_RSS_DEFAULT_CPU_MASK_FIELD 0xffUL -#define NIC_CFG_RSS_DEFAULT_CPU_SHIFT 0 -#define NIC_CFG_RSS_HASH_TYPE (0xffUL << 8) -#define NIC_CFG_RSS_HASH_TYPE_MASK_FIELD 0xffUL -#define NIC_CFG_RSS_HASH_TYPE_SHIFT 8 -#define NIC_CFG_RSS_HASH_BITS (7UL << 16) -#define NIC_CFG_RSS_HASH_BITS_MASK_FIELD 7UL -#define NIC_CFG_RSS_HASH_BITS_SHIFT 16 -#define NIC_CFG_RSS_BASE_CPU (7UL << 19) -#define NIC_CFG_RSS_BASE_CPU_MASK_FIELD 7UL -#define NIC_CFG_RSS_BASE_CPU_SHIFT 19 -#define NIC_CFG_RSS_ENABLE (1UL << 22) -#define NIC_CFG_RSS_ENABLE_MASK_FIELD 1UL -#define NIC_CFG_RSS_ENABLE_SHIFT 22 -#define NIC_CFG_TSO_IPID_SPLIT_EN (1UL << 23) -#define NIC_CFG_TSO_IPID_SPLIT_EN_MASK_FIELD 1UL -#define NIC_CFG_TSO_IPID_SPLIT_EN_SHIFT 23 -#define NIC_CFG_IG_VLAN_STRIP_EN (1UL << 24) -#define NIC_CFG_IG_VLAN_STRIP_EN_MASK_FIELD 1UL -#define NIC_CFG_IG_VLAN_STRIP_EN_SHIFT 24 - -#define NIC_CFG_RSS_HASH_TYPE_IPV4 (1 << 1) -#define NIC_CFG_RSS_HASH_TYPE_TCP_IPV4 (1 << 2) -#define NIC_CFG_RSS_HASH_TYPE_IPV6 (1 << 3) -#define NIC_CFG_RSS_HASH_TYPE_TCP_IPV6 (1 << 4) -#define NIC_CFG_RSS_HASH_TYPE_IPV6_EX (1 << 5) -#define NIC_CFG_RSS_HASH_TYPE_TCP_IPV6_EX (1 << 6) - -static inline void vnic_set_nic_cfg(u32 *nic_cfg, - u8 rss_default_cpu, u8 rss_hash_type, - u8 rss_hash_bits, u8 rss_base_cpu, - u8 rss_enable, u8 tso_ipid_split_en, - u8 ig_vlan_strip_en) -{ - *nic_cfg = (rss_default_cpu & NIC_CFG_RSS_DEFAULT_CPU_MASK_FIELD) | - ((rss_hash_type & NIC_CFG_RSS_HASH_TYPE_MASK_FIELD) - << NIC_CFG_RSS_HASH_TYPE_SHIFT) | - ((rss_hash_bits & NIC_CFG_RSS_HASH_BITS_MASK_FIELD) - << NIC_CFG_RSS_HASH_BITS_SHIFT) | - ((rss_base_cpu & NIC_CFG_RSS_BASE_CPU_MASK_FIELD) - << NIC_CFG_RSS_BASE_CPU_SHIFT) | - ((rss_enable & NIC_CFG_RSS_ENABLE_MASK_FIELD) - << NIC_CFG_RSS_ENABLE_SHIFT) | - ((tso_ipid_split_en & NIC_CFG_TSO_IPID_SPLIT_EN_MASK_FIELD) - << NIC_CFG_TSO_IPID_SPLIT_EN_SHIFT) | - ((ig_vlan_strip_en & NIC_CFG_IG_VLAN_STRIP_EN_MASK_FIELD) - << NIC_CFG_IG_VLAN_STRIP_EN_SHIFT); -} - -#endif /* _VNIC_NIC_H_ */ diff --git a/drivers/net/enic/vnic_resource.h b/drivers/net/enic/vnic_resource.h deleted file mode 100644 index e0a73f1ca6f..00000000000 --- a/drivers/net/enic/vnic_resource.h +++ /dev/null @@ -1,76 +0,0 @@ -/* - * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. - * Copyright 2007 Nuova Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#ifndef _VNIC_RESOURCE_H_ -#define _VNIC_RESOURCE_H_ - -#define VNIC_RES_MAGIC 0x766E6963L /* 'vnic' */ -#define VNIC_RES_VERSION 0x00000000L -#define MGMTVNIC_MAGIC 0x544d474dL /* 'MGMT' */ -#define MGMTVNIC_VERSION 0x00000000L - -/* The MAC address assigned to the CFG vNIC is fixed. */ -#define MGMTVNIC_MAC { 0x02, 0x00, 0x54, 0x4d, 0x47, 0x4d } - -/* vNIC resource types */ -enum vnic_res_type { - RES_TYPE_EOL, /* End-of-list */ - RES_TYPE_WQ, /* Work queues */ - RES_TYPE_RQ, /* Receive queues */ - RES_TYPE_CQ, /* Completion queues */ - RES_TYPE_RSVD1, - RES_TYPE_NIC_CFG, /* Enet NIC config registers */ - RES_TYPE_RSVD2, - RES_TYPE_RSVD3, - RES_TYPE_RSVD4, - RES_TYPE_RSVD5, - RES_TYPE_INTR_CTRL, /* Interrupt ctrl table */ - RES_TYPE_INTR_TABLE, /* MSI/MSI-X Interrupt table */ - RES_TYPE_INTR_PBA, /* MSI/MSI-X PBA table */ - RES_TYPE_INTR_PBA_LEGACY, /* Legacy intr status */ - RES_TYPE_RSVD6, - RES_TYPE_RSVD7, - RES_TYPE_DEVCMD, /* Device command region */ - RES_TYPE_PASS_THRU_PAGE, /* Pass-thru page */ - - RES_TYPE_MAX, /* Count of resource types */ -}; - -struct vnic_resource_header { - u32 magic; - u32 version; -}; - -struct mgmt_barmap_hdr { - u32 magic; /* magic number */ - u32 version; /* header format version */ - u16 lif; /* loopback lif for mgmt frames */ - u16 pci_slot; /* installed pci slot */ - char serial[16]; /* card serial number */ -}; - -struct vnic_resource { - u8 type; - u8 bar; - u8 pad[2]; - u32 bar_offset; - u32 count; -}; - -#endif /* _VNIC_RESOURCE_H_ */ diff --git a/drivers/net/enic/vnic_rq.c b/drivers/net/enic/vnic_rq.c deleted file mode 100644 index 34105e0951a..00000000000 --- a/drivers/net/enic/vnic_rq.c +++ /dev/null @@ -1,221 +0,0 @@ -/* - * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. - * Copyright 2007 Nuova Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#include -#include -#include -#include -#include -#include - -#include "vnic_dev.h" -#include "vnic_rq.h" - -static int vnic_rq_alloc_bufs(struct vnic_rq *rq) -{ - struct vnic_rq_buf *buf; - struct vnic_dev *vdev; - unsigned int i, j, count = rq->ring.desc_count; - unsigned int blks = VNIC_RQ_BUF_BLKS_NEEDED(count); - - vdev = rq->vdev; - - for (i = 0; i < blks; i++) { - rq->bufs[i] = kzalloc(VNIC_RQ_BUF_BLK_SZ(count), GFP_ATOMIC); - if (!rq->bufs[i]) { - pr_err("Failed to alloc rq_bufs\n"); - return -ENOMEM; - } - } - - for (i = 0; i < blks; i++) { - buf = rq->bufs[i]; - for (j = 0; j < VNIC_RQ_BUF_BLK_ENTRIES(count); j++) { - buf->index = i * VNIC_RQ_BUF_BLK_ENTRIES(count) + j; - buf->desc = (u8 *)rq->ring.descs + - rq->ring.desc_size * buf->index; - if (buf->index + 1 == count) { - buf->next = rq->bufs[0]; - break; - } else if (j + 1 == VNIC_RQ_BUF_BLK_ENTRIES(count)) { - buf->next = rq->bufs[i + 1]; - } else { - buf->next = buf + 1; - buf++; - } - } - } - - rq->to_use = rq->to_clean = rq->bufs[0]; - - return 0; -} - -void vnic_rq_free(struct vnic_rq *rq) -{ - struct vnic_dev *vdev; - unsigned int i; - - vdev = rq->vdev; - - vnic_dev_free_desc_ring(vdev, &rq->ring); - - for (i = 0; i < VNIC_RQ_BUF_BLKS_MAX; i++) { - if (rq->bufs[i]) { - kfree(rq->bufs[i]); - rq->bufs[i] = NULL; - } - } - - rq->ctrl = NULL; -} - -int vnic_rq_alloc(struct vnic_dev *vdev, struct vnic_rq *rq, unsigned int index, - unsigned int desc_count, unsigned int desc_size) -{ - int err; - - rq->index = index; - rq->vdev = vdev; - - rq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_RQ, index); - if (!rq->ctrl) { - pr_err("Failed to hook RQ[%d] resource\n", index); - return -EINVAL; - } - - vnic_rq_disable(rq); - - err = vnic_dev_alloc_desc_ring(vdev, &rq->ring, desc_count, desc_size); - if (err) - return err; - - err = vnic_rq_alloc_bufs(rq); - if (err) { - vnic_rq_free(rq); - return err; - } - - return 0; -} - -static void vnic_rq_init_start(struct vnic_rq *rq, unsigned int cq_index, - unsigned int fetch_index, unsigned int posted_index, - unsigned int error_interrupt_enable, - unsigned int error_interrupt_offset) -{ - u64 paddr; - unsigned int count = rq->ring.desc_count; - - paddr = (u64)rq->ring.base_addr | VNIC_PADDR_TARGET; - writeq(paddr, &rq->ctrl->ring_base); - iowrite32(count, &rq->ctrl->ring_size); - iowrite32(cq_index, &rq->ctrl->cq_index); - iowrite32(error_interrupt_enable, &rq->ctrl->error_interrupt_enable); - iowrite32(error_interrupt_offset, &rq->ctrl->error_interrupt_offset); - iowrite32(0, &rq->ctrl->dropped_packet_count); - iowrite32(0, &rq->ctrl->error_status); - iowrite32(fetch_index, &rq->ctrl->fetch_index); - iowrite32(posted_index, &rq->ctrl->posted_index); - - rq->to_use = rq->to_clean = - &rq->bufs[fetch_index / VNIC_RQ_BUF_BLK_ENTRIES(count)] - [fetch_index % VNIC_RQ_BUF_BLK_ENTRIES(count)]; -} - -void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index, - unsigned int error_interrupt_enable, - unsigned int error_interrupt_offset) -{ - u32 fetch_index; - - /* Use current fetch_index as the ring starting point */ - fetch_index = ioread32(&rq->ctrl->fetch_index); - - if (fetch_index == 0xFFFFFFFF) { /* check for hardware gone */ - /* Hardware surprise removal: reset fetch_index */ - fetch_index = 0; - } - - vnic_rq_init_start(rq, cq_index, - fetch_index, fetch_index, - error_interrupt_enable, - error_interrupt_offset); -} - -unsigned int vnic_rq_error_status(struct vnic_rq *rq) -{ - return ioread32(&rq->ctrl->error_status); -} - -void vnic_rq_enable(struct vnic_rq *rq) -{ - iowrite32(1, &rq->ctrl->enable); -} - -int vnic_rq_disable(struct vnic_rq *rq) -{ - unsigned int wait; - - iowrite32(0, &rq->ctrl->enable); - - /* Wait for HW to ACK disable request */ - for (wait = 0; wait < 1000; wait++) { - if (!(ioread32(&rq->ctrl->running))) - return 0; - udelay(10); - } - - pr_err("Failed to disable RQ[%d]\n", rq->index); - - return -ETIMEDOUT; -} - -void vnic_rq_clean(struct vnic_rq *rq, - void (*buf_clean)(struct vnic_rq *rq, struct vnic_rq_buf *buf)) -{ - struct vnic_rq_buf *buf; - u32 fetch_index; - unsigned int count = rq->ring.desc_count; - - buf = rq->to_clean; - - while (vnic_rq_desc_used(rq) > 0) { - - (*buf_clean)(rq, buf); - - buf = rq->to_clean = buf->next; - rq->ring.desc_avail++; - } - - /* Use current fetch_index as the ring starting point */ - fetch_index = ioread32(&rq->ctrl->fetch_index); - - if (fetch_index == 0xFFFFFFFF) { /* check for hardware gone */ - /* Hardware surprise removal: reset fetch_index */ - fetch_index = 0; - } - rq->to_use = rq->to_clean = - &rq->bufs[fetch_index / VNIC_RQ_BUF_BLK_ENTRIES(count)] - [fetch_index % VNIC_RQ_BUF_BLK_ENTRIES(count)]; - iowrite32(fetch_index, &rq->ctrl->posted_index); - - vnic_dev_clear_desc_ring(&rq->ring); -} - diff --git a/drivers/net/enic/vnic_rq.h b/drivers/net/enic/vnic_rq.h deleted file mode 100644 index 2056586f4d4..00000000000 --- a/drivers/net/enic/vnic_rq.h +++ /dev/null @@ -1,209 +0,0 @@ -/* - * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. - * Copyright 2007 Nuova Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#ifndef _VNIC_RQ_H_ -#define _VNIC_RQ_H_ - -#include - -#include "vnic_dev.h" -#include "vnic_cq.h" - -/* Receive queue control */ -struct vnic_rq_ctrl { - u64 ring_base; /* 0x00 */ - u32 ring_size; /* 0x08 */ - u32 pad0; - u32 posted_index; /* 0x10 */ - u32 pad1; - u32 cq_index; /* 0x18 */ - u32 pad2; - u32 enable; /* 0x20 */ - u32 pad3; - u32 running; /* 0x28 */ - u32 pad4; - u32 fetch_index; /* 0x30 */ - u32 pad5; - u32 error_interrupt_enable; /* 0x38 */ - u32 pad6; - u32 error_interrupt_offset; /* 0x40 */ - u32 pad7; - u32 error_status; /* 0x48 */ - u32 pad8; - u32 dropped_packet_count; /* 0x50 */ - u32 pad9; - u32 dropped_packet_count_rc; /* 0x58 */ - u32 pad10; -}; - -/* Break the vnic_rq_buf allocations into blocks of 32/64 entries */ -#define VNIC_RQ_BUF_MIN_BLK_ENTRIES 32 -#define VNIC_RQ_BUF_DFLT_BLK_ENTRIES 64 -#define VNIC_RQ_BUF_BLK_ENTRIES(entries) \ - ((unsigned int)((entries < VNIC_RQ_BUF_DFLT_BLK_ENTRIES) ? \ - VNIC_RQ_BUF_MIN_BLK_ENTRIES : VNIC_RQ_BUF_DFLT_BLK_ENTRIES)) -#define VNIC_RQ_BUF_BLK_SZ(entries) \ - (VNIC_RQ_BUF_BLK_ENTRIES(entries) * sizeof(struct vnic_rq_buf)) -#define VNIC_RQ_BUF_BLKS_NEEDED(entries) \ - DIV_ROUND_UP(entries, VNIC_RQ_BUF_BLK_ENTRIES(entries)) -#define VNIC_RQ_BUF_BLKS_MAX VNIC_RQ_BUF_BLKS_NEEDED(4096) - -struct vnic_rq_buf { - struct vnic_rq_buf *next; - dma_addr_t dma_addr; - void *os_buf; - unsigned int os_buf_index; - unsigned int len; - unsigned int index; - void *desc; -}; - -struct vnic_rq { - unsigned int index; - struct vnic_dev *vdev; - struct vnic_rq_ctrl __iomem *ctrl; /* memory-mapped */ - struct vnic_dev_ring ring; - struct vnic_rq_buf *bufs[VNIC_RQ_BUF_BLKS_MAX]; - struct vnic_rq_buf *to_use; - struct vnic_rq_buf *to_clean; - void *os_buf_head; - unsigned int pkts_outstanding; -}; - -static inline unsigned int vnic_rq_desc_avail(struct vnic_rq *rq) -{ - /* how many does SW own? */ - return rq->ring.desc_avail; -} - -static inline unsigned int vnic_rq_desc_used(struct vnic_rq *rq) -{ - /* how many does HW own? */ - return rq->ring.desc_count - rq->ring.desc_avail - 1; -} - -static inline void *vnic_rq_next_desc(struct vnic_rq *rq) -{ - return rq->to_use->desc; -} - -static inline unsigned int vnic_rq_next_index(struct vnic_rq *rq) -{ - return rq->to_use->index; -} - -static inline void vnic_rq_post(struct vnic_rq *rq, - void *os_buf, unsigned int os_buf_index, - dma_addr_t dma_addr, unsigned int len) -{ - struct vnic_rq_buf *buf = rq->to_use; - - buf->os_buf = os_buf; - buf->os_buf_index = os_buf_index; - buf->dma_addr = dma_addr; - buf->len = len; - - buf = buf->next; - rq->to_use = buf; - rq->ring.desc_avail--; - - /* Move the posted_index every nth descriptor - */ - -#ifndef VNIC_RQ_RETURN_RATE -#define VNIC_RQ_RETURN_RATE 0xf /* keep 2^n - 1 */ -#endif - - if ((buf->index & VNIC_RQ_RETURN_RATE) == 0) { - /* Adding write memory barrier prevents compiler and/or CPU - * reordering, thus avoiding descriptor posting before - * descriptor is initialized. Otherwise, hardware can read - * stale descriptor fields. - */ - wmb(); - iowrite32(buf->index, &rq->ctrl->posted_index); - } -} - -static inline void vnic_rq_return_descs(struct vnic_rq *rq, unsigned int count) -{ - rq->ring.desc_avail += count; -} - -enum desc_return_options { - VNIC_RQ_RETURN_DESC, - VNIC_RQ_DEFER_RETURN_DESC, -}; - -static inline void vnic_rq_service(struct vnic_rq *rq, - struct cq_desc *cq_desc, u16 completed_index, - int desc_return, void (*buf_service)(struct vnic_rq *rq, - struct cq_desc *cq_desc, struct vnic_rq_buf *buf, - int skipped, void *opaque), void *opaque) -{ - struct vnic_rq_buf *buf; - int skipped; - - buf = rq->to_clean; - while (1) { - - skipped = (buf->index != completed_index); - - (*buf_service)(rq, cq_desc, buf, skipped, opaque); - - if (desc_return == VNIC_RQ_RETURN_DESC) - rq->ring.desc_avail++; - - rq->to_clean = buf->next; - - if (!skipped) - break; - - buf = rq->to_clean; - } -} - -static inline int vnic_rq_fill(struct vnic_rq *rq, - int (*buf_fill)(struct vnic_rq *rq)) -{ - int err; - - while (vnic_rq_desc_avail(rq) > 0) { - - err = (*buf_fill)(rq); - if (err) - return err; - } - - return 0; -} - -void vnic_rq_free(struct vnic_rq *rq); -int vnic_rq_alloc(struct vnic_dev *vdev, struct vnic_rq *rq, unsigned int index, - unsigned int desc_count, unsigned int desc_size); -void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index, - unsigned int error_interrupt_enable, - unsigned int error_interrupt_offset); -unsigned int vnic_rq_error_status(struct vnic_rq *rq); -void vnic_rq_enable(struct vnic_rq *rq); -int vnic_rq_disable(struct vnic_rq *rq); -void vnic_rq_clean(struct vnic_rq *rq, - void (*buf_clean)(struct vnic_rq *rq, struct vnic_rq_buf *buf)); - -#endif /* _VNIC_RQ_H_ */ diff --git a/drivers/net/enic/vnic_rss.h b/drivers/net/enic/vnic_rss.h deleted file mode 100644 index fa421baf45b..00000000000 --- a/drivers/net/enic/vnic_rss.h +++ /dev/null @@ -1,40 +0,0 @@ -/* - * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. - * Copyright 2007 Nuova Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#ifndef _VNIC_RSS_H_ -#define _VNIC_RSS_H_ - -/* RSS key array */ -union vnic_rss_key { - struct { - u8 b[10]; - u8 b_pad[6]; - } key[4]; - u64 raw[8]; -}; - -/* RSS cpu array */ -union vnic_rss_cpu { - struct { - u8 b[4] ; - u8 b_pad[4]; - } cpu[32]; - u64 raw[32]; -}; - -#endif /* _VNIC_RSS_H_ */ diff --git a/drivers/net/enic/vnic_stats.h b/drivers/net/enic/vnic_stats.h deleted file mode 100644 index 77750ec9395..00000000000 --- a/drivers/net/enic/vnic_stats.h +++ /dev/null @@ -1,70 +0,0 @@ -/* - * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. - * Copyright 2007 Nuova Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#ifndef _VNIC_STATS_H_ -#define _VNIC_STATS_H_ - -/* Tx statistics */ -struct vnic_tx_stats { - u64 tx_frames_ok; - u64 tx_unicast_frames_ok; - u64 tx_multicast_frames_ok; - u64 tx_broadcast_frames_ok; - u64 tx_bytes_ok; - u64 tx_unicast_bytes_ok; - u64 tx_multicast_bytes_ok; - u64 tx_broadcast_bytes_ok; - u64 tx_drops; - u64 tx_errors; - u64 tx_tso; - u64 rsvd[16]; -}; - -/* Rx statistics */ -struct vnic_rx_stats { - u64 rx_frames_ok; - u64 rx_frames_total; - u64 rx_unicast_frames_ok; - u64 rx_multicast_frames_ok; - u64 rx_broadcast_frames_ok; - u64 rx_bytes_ok; - u64 rx_unicast_bytes_ok; - u64 rx_multicast_bytes_ok; - u64 rx_broadcast_bytes_ok; - u64 rx_drop; - u64 rx_no_bufs; - u64 rx_errors; - u64 rx_rss; - u64 rx_crc_errors; - u64 rx_frames_64; - u64 rx_frames_127; - u64 rx_frames_255; - u64 rx_frames_511; - u64 rx_frames_1023; - u64 rx_frames_1518; - u64 rx_frames_to_max; - u64 rsvd[16]; -}; - -struct vnic_stats { - struct vnic_tx_stats tx; - struct vnic_rx_stats rx; -}; - -#endif /* _VNIC_STATS_H_ */ diff --git a/drivers/net/enic/vnic_vic.c b/drivers/net/enic/vnic_vic.c deleted file mode 100644 index 24ef8cd4054..00000000000 --- a/drivers/net/enic/vnic_vic.c +++ /dev/null @@ -1,79 +0,0 @@ -/* - * Copyright 2010 Cisco Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#include -#include -#include -#include - -#include "vnic_vic.h" - -struct vic_provinfo *vic_provinfo_alloc(gfp_t flags, const u8 *oui, - const u8 type) -{ - struct vic_provinfo *vp; - - if (!oui) - return NULL; - - vp = kzalloc(VIC_PROVINFO_MAX_DATA, flags); - if (!vp) - return NULL; - - memcpy(vp->oui, oui, sizeof(vp->oui)); - vp->type = type; - vp->length = htonl(sizeof(vp->num_tlvs)); - - return vp; -} - -void vic_provinfo_free(struct vic_provinfo *vp) -{ - kfree(vp); -} - -int vic_provinfo_add_tlv(struct vic_provinfo *vp, u16 type, u16 length, - const void *value) -{ - struct vic_provinfo_tlv *tlv; - - if (!vp || !value) - return -EINVAL; - - if (ntohl(vp->length) + offsetof(struct vic_provinfo_tlv, value) + - length > VIC_PROVINFO_MAX_TLV_DATA) - return -ENOMEM; - - tlv = (struct vic_provinfo_tlv *)((u8 *)vp->tlv + - ntohl(vp->length) - sizeof(vp->num_tlvs)); - - tlv->type = htons(type); - tlv->length = htons(length); - memcpy(tlv->value, value, length); - - vp->num_tlvs = htonl(ntohl(vp->num_tlvs) + 1); - vp->length = htonl(ntohl(vp->length) + - offsetof(struct vic_provinfo_tlv, value) + length); - - return 0; -} - -size_t vic_provinfo_size(struct vic_provinfo *vp) -{ - return vp ? ntohl(vp->length) + sizeof(*vp) - sizeof(vp->num_tlvs) : 0; -} diff --git a/drivers/net/enic/vnic_vic.h b/drivers/net/enic/vnic_vic.h deleted file mode 100644 index 9ef81f14835..00000000000 --- a/drivers/net/enic/vnic_vic.h +++ /dev/null @@ -1,83 +0,0 @@ -/* - * Copyright 2010 Cisco Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#ifndef _VNIC_VIC_H_ -#define _VNIC_VIC_H_ - -/* Note: All integer fields in NETWORK byte order */ - -/* Note: String field lengths include null char */ - -#define VIC_PROVINFO_CISCO_OUI { 0x00, 0x00, 0x0c } -#define VIC_PROVINFO_GENERIC_TYPE 0x4 - -enum vic_generic_prov_tlv_type { - VIC_GENERIC_PROV_TLV_PORT_PROFILE_NAME_STR = 0, - VIC_GENERIC_PROV_TLV_CLIENT_MAC_ADDR = 1, - VIC_GENERIC_PROV_TLV_CLIENT_NAME_STR = 2, - VIC_GENERIC_PROV_TLV_CLUSTER_PORT_NAME_STR = 3, - VIC_GENERIC_PROV_TLV_CLUSTER_PORT_UUID_STR = 4, - VIC_GENERIC_PROV_TLV_CLUSTER_UUID_STR = 5, - VIC_GENERIC_PROV_TLV_CLUSTER_NAME_STR = 7, - VIC_GENERIC_PROV_TLV_HOST_UUID_STR = 8, - VIC_GENERIC_PROV_TLV_CLIENT_UUID_STR = 9, - VIC_GENERIC_PROV_TLV_INCARNATION_NUMBER = 10, - VIC_GENERIC_PROV_TLV_OS_TYPE = 11, - VIC_GENERIC_PROV_TLV_OS_VENDOR = 12, - VIC_GENERIC_PROV_TLV_CLIENT_TYPE = 15, -}; - -enum vic_generic_prov_os_type { - VIC_GENERIC_PROV_OS_TYPE_UNKNOWN = 0, - VIC_GENERIC_PROV_OS_TYPE_ESX = 1, - VIC_GENERIC_PROV_OS_TYPE_LINUX = 2, - VIC_GENERIC_PROV_OS_TYPE_WINDOWS = 3, - VIC_GENERIC_PROV_OS_TYPE_SOLARIS = 4, -}; - -struct vic_provinfo { - u8 oui[3]; /* OUI of data provider */ - u8 type; /* provider-specific type */ - u32 length; /* length of data below */ - u32 num_tlvs; /* number of tlvs */ - struct vic_provinfo_tlv { - u16 type; - u16 length; - u8 value[0]; - } tlv[0]; -} __packed; - -#define VIC_PROVINFO_ADD_TLV(vp, tlvtype, tlvlen, data) \ - do { \ - err = vic_provinfo_add_tlv(vp, tlvtype, tlvlen, data); \ - if (err) \ - goto add_tlv_failure; \ - } while (0) - -#define VIC_PROVINFO_MAX_DATA 1385 -#define VIC_PROVINFO_MAX_TLV_DATA (VIC_PROVINFO_MAX_DATA - \ - sizeof(struct vic_provinfo)) - -struct vic_provinfo *vic_provinfo_alloc(gfp_t flags, const u8 *oui, - const u8 type); -void vic_provinfo_free(struct vic_provinfo *vp); -int vic_provinfo_add_tlv(struct vic_provinfo *vp, u16 type, u16 length, - const void *value); -size_t vic_provinfo_size(struct vic_provinfo *vp); - -#endif /* _VNIC_VIC_H_ */ diff --git a/drivers/net/enic/vnic_wq.c b/drivers/net/enic/vnic_wq.c deleted file mode 100644 index df61bd932ea..00000000000 --- a/drivers/net/enic/vnic_wq.c +++ /dev/null @@ -1,200 +0,0 @@ -/* - * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. - * Copyright 2007 Nuova Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#include -#include -#include -#include -#include -#include - -#include "vnic_dev.h" -#include "vnic_wq.h" - -static int vnic_wq_alloc_bufs(struct vnic_wq *wq) -{ - struct vnic_wq_buf *buf; - struct vnic_dev *vdev; - unsigned int i, j, count = wq->ring.desc_count; - unsigned int blks = VNIC_WQ_BUF_BLKS_NEEDED(count); - - vdev = wq->vdev; - - for (i = 0; i < blks; i++) { - wq->bufs[i] = kzalloc(VNIC_WQ_BUF_BLK_SZ(count), GFP_ATOMIC); - if (!wq->bufs[i]) { - pr_err("Failed to alloc wq_bufs\n"); - return -ENOMEM; - } - } - - for (i = 0; i < blks; i++) { - buf = wq->bufs[i]; - for (j = 0; j < VNIC_WQ_BUF_BLK_ENTRIES(count); j++) { - buf->index = i * VNIC_WQ_BUF_BLK_ENTRIES(count) + j; - buf->desc = (u8 *)wq->ring.descs + - wq->ring.desc_size * buf->index; - if (buf->index + 1 == count) { - buf->next = wq->bufs[0]; - break; - } else if (j + 1 == VNIC_WQ_BUF_BLK_ENTRIES(count)) { - buf->next = wq->bufs[i + 1]; - } else { - buf->next = buf + 1; - buf++; - } - } - } - - wq->to_use = wq->to_clean = wq->bufs[0]; - - return 0; -} - -void vnic_wq_free(struct vnic_wq *wq) -{ - struct vnic_dev *vdev; - unsigned int i; - - vdev = wq->vdev; - - vnic_dev_free_desc_ring(vdev, &wq->ring); - - for (i = 0; i < VNIC_WQ_BUF_BLKS_MAX; i++) { - if (wq->bufs[i]) { - kfree(wq->bufs[i]); - wq->bufs[i] = NULL; - } - } - - wq->ctrl = NULL; -} - -int vnic_wq_alloc(struct vnic_dev *vdev, struct vnic_wq *wq, unsigned int index, - unsigned int desc_count, unsigned int desc_size) -{ - int err; - - wq->index = index; - wq->vdev = vdev; - - wq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_WQ, index); - if (!wq->ctrl) { - pr_err("Failed to hook WQ[%d] resource\n", index); - return -EINVAL; - } - - vnic_wq_disable(wq); - - err = vnic_dev_alloc_desc_ring(vdev, &wq->ring, desc_count, desc_size); - if (err) - return err; - - err = vnic_wq_alloc_bufs(wq); - if (err) { - vnic_wq_free(wq); - return err; - } - - return 0; -} - -static void vnic_wq_init_start(struct vnic_wq *wq, unsigned int cq_index, - unsigned int fetch_index, unsigned int posted_index, - unsigned int error_interrupt_enable, - unsigned int error_interrupt_offset) -{ - u64 paddr; - unsigned int count = wq->ring.desc_count; - - paddr = (u64)wq->ring.base_addr | VNIC_PADDR_TARGET; - writeq(paddr, &wq->ctrl->ring_base); - iowrite32(count, &wq->ctrl->ring_size); - iowrite32(fetch_index, &wq->ctrl->fetch_index); - iowrite32(posted_index, &wq->ctrl->posted_index); - iowrite32(cq_index, &wq->ctrl->cq_index); - iowrite32(error_interrupt_enable, &wq->ctrl->error_interrupt_enable); - iowrite32(error_interrupt_offset, &wq->ctrl->error_interrupt_offset); - iowrite32(0, &wq->ctrl->error_status); - - wq->to_use = wq->to_clean = - &wq->bufs[fetch_index / VNIC_WQ_BUF_BLK_ENTRIES(count)] - [fetch_index % VNIC_WQ_BUF_BLK_ENTRIES(count)]; -} - -void vnic_wq_init(struct vnic_wq *wq, unsigned int cq_index, - unsigned int error_interrupt_enable, - unsigned int error_interrupt_offset) -{ - vnic_wq_init_start(wq, cq_index, 0, 0, - error_interrupt_enable, - error_interrupt_offset); -} - -unsigned int vnic_wq_error_status(struct vnic_wq *wq) -{ - return ioread32(&wq->ctrl->error_status); -} - -void vnic_wq_enable(struct vnic_wq *wq) -{ - iowrite32(1, &wq->ctrl->enable); -} - -int vnic_wq_disable(struct vnic_wq *wq) -{ - unsigned int wait; - - iowrite32(0, &wq->ctrl->enable); - - /* Wait for HW to ACK disable request */ - for (wait = 0; wait < 1000; wait++) { - if (!(ioread32(&wq->ctrl->running))) - return 0; - udelay(10); - } - - pr_err("Failed to disable WQ[%d]\n", wq->index); - - return -ETIMEDOUT; -} - -void vnic_wq_clean(struct vnic_wq *wq, - void (*buf_clean)(struct vnic_wq *wq, struct vnic_wq_buf *buf)) -{ - struct vnic_wq_buf *buf; - - buf = wq->to_clean; - - while (vnic_wq_desc_used(wq) > 0) { - - (*buf_clean)(wq, buf); - - buf = wq->to_clean = buf->next; - wq->ring.desc_avail++; - } - - wq->to_use = wq->to_clean = wq->bufs[0]; - - iowrite32(0, &wq->ctrl->fetch_index); - iowrite32(0, &wq->ctrl->posted_index); - iowrite32(0, &wq->ctrl->error_status); - - vnic_dev_clear_desc_ring(&wq->ring); -} diff --git a/drivers/net/enic/vnic_wq.h b/drivers/net/enic/vnic_wq.h deleted file mode 100644 index 7dd937ac11c..00000000000 --- a/drivers/net/enic/vnic_wq.h +++ /dev/null @@ -1,165 +0,0 @@ -/* - * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. - * Copyright 2007 Nuova Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#ifndef _VNIC_WQ_H_ -#define _VNIC_WQ_H_ - -#include - -#include "vnic_dev.h" -#include "vnic_cq.h" - -/* Work queue control */ -struct vnic_wq_ctrl { - u64 ring_base; /* 0x00 */ - u32 ring_size; /* 0x08 */ - u32 pad0; - u32 posted_index; /* 0x10 */ - u32 pad1; - u32 cq_index; /* 0x18 */ - u32 pad2; - u32 enable; /* 0x20 */ - u32 pad3; - u32 running; /* 0x28 */ - u32 pad4; - u32 fetch_index; /* 0x30 */ - u32 pad5; - u32 dca_value; /* 0x38 */ - u32 pad6; - u32 error_interrupt_enable; /* 0x40 */ - u32 pad7; - u32 error_interrupt_offset; /* 0x48 */ - u32 pad8; - u32 error_status; /* 0x50 */ - u32 pad9; -}; - -struct vnic_wq_buf { - struct vnic_wq_buf *next; - dma_addr_t dma_addr; - void *os_buf; - unsigned int len; - unsigned int index; - int sop; - void *desc; -}; - -/* Break the vnic_wq_buf allocations into blocks of 32/64 entries */ -#define VNIC_WQ_BUF_MIN_BLK_ENTRIES 32 -#define VNIC_WQ_BUF_DFLT_BLK_ENTRIES 64 -#define VNIC_WQ_BUF_BLK_ENTRIES(entries) \ - ((unsigned int)((entries < VNIC_WQ_BUF_DFLT_BLK_ENTRIES) ? \ - VNIC_WQ_BUF_MIN_BLK_ENTRIES : VNIC_WQ_BUF_DFLT_BLK_ENTRIES)) -#define VNIC_WQ_BUF_BLK_SZ(entries) \ - (VNIC_WQ_BUF_BLK_ENTRIES(entries) * sizeof(struct vnic_wq_buf)) -#define VNIC_WQ_BUF_BLKS_NEEDED(entries) \ - DIV_ROUND_UP(entries, VNIC_WQ_BUF_BLK_ENTRIES(entries)) -#define VNIC_WQ_BUF_BLKS_MAX VNIC_WQ_BUF_BLKS_NEEDED(4096) - -struct vnic_wq { - unsigned int index; - struct vnic_dev *vdev; - struct vnic_wq_ctrl __iomem *ctrl; /* memory-mapped */ - struct vnic_dev_ring ring; - struct vnic_wq_buf *bufs[VNIC_WQ_BUF_BLKS_MAX]; - struct vnic_wq_buf *to_use; - struct vnic_wq_buf *to_clean; - unsigned int pkts_outstanding; -}; - -static inline unsigned int vnic_wq_desc_avail(struct vnic_wq *wq) -{ - /* how many does SW own? */ - return wq->ring.desc_avail; -} - -static inline unsigned int vnic_wq_desc_used(struct vnic_wq *wq) -{ - /* how many does HW own? */ - return wq->ring.desc_count - wq->ring.desc_avail - 1; -} - -static inline void *vnic_wq_next_desc(struct vnic_wq *wq) -{ - return wq->to_use->desc; -} - -static inline void vnic_wq_post(struct vnic_wq *wq, - void *os_buf, dma_addr_t dma_addr, - unsigned int len, int sop, int eop) -{ - struct vnic_wq_buf *buf = wq->to_use; - - buf->sop = sop; - buf->os_buf = eop ? os_buf : NULL; - buf->dma_addr = dma_addr; - buf->len = len; - - buf = buf->next; - if (eop) { - /* Adding write memory barrier prevents compiler and/or CPU - * reordering, thus avoiding descriptor posting before - * descriptor is initialized. Otherwise, hardware can read - * stale descriptor fields. - */ - wmb(); - iowrite32(buf->index, &wq->ctrl->posted_index); - } - wq->to_use = buf; - - wq->ring.desc_avail--; -} - -static inline void vnic_wq_service(struct vnic_wq *wq, - struct cq_desc *cq_desc, u16 completed_index, - void (*buf_service)(struct vnic_wq *wq, - struct cq_desc *cq_desc, struct vnic_wq_buf *buf, void *opaque), - void *opaque) -{ - struct vnic_wq_buf *buf; - - buf = wq->to_clean; - while (1) { - - (*buf_service)(wq, cq_desc, buf, opaque); - - wq->ring.desc_avail++; - - wq->to_clean = buf->next; - - if (buf->index == completed_index) - break; - - buf = wq->to_clean; - } -} - -void vnic_wq_free(struct vnic_wq *wq); -int vnic_wq_alloc(struct vnic_dev *vdev, struct vnic_wq *wq, unsigned int index, - unsigned int desc_count, unsigned int desc_size); -void vnic_wq_init(struct vnic_wq *wq, unsigned int cq_index, - unsigned int error_interrupt_enable, - unsigned int error_interrupt_offset); -unsigned int vnic_wq_error_status(struct vnic_wq *wq); -void vnic_wq_enable(struct vnic_wq *wq); -int vnic_wq_disable(struct vnic_wq *wq); -void vnic_wq_clean(struct vnic_wq *wq, - void (*buf_clean)(struct vnic_wq *wq, struct vnic_wq_buf *buf)); - -#endif /* _VNIC_WQ_H_ */ diff --git a/drivers/net/enic/wq_enet_desc.h b/drivers/net/enic/wq_enet_desc.h deleted file mode 100644 index c7021e3a631..00000000000 --- a/drivers/net/enic/wq_enet_desc.h +++ /dev/null @@ -1,98 +0,0 @@ -/* - * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. - * Copyright 2007 Nuova Systems, Inc. All rights reserved. - * - * This program is free software; you may redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#ifndef _WQ_ENET_DESC_H_ -#define _WQ_ENET_DESC_H_ - -/* Ethernet work queue descriptor: 16B */ -struct wq_enet_desc { - __le64 address; - __le16 length; - __le16 mss_loopback; - __le16 header_length_flags; - __le16 vlan_tag; -}; - -#define WQ_ENET_ADDR_BITS 64 -#define WQ_ENET_LEN_BITS 14 -#define WQ_ENET_LEN_MASK ((1 << WQ_ENET_LEN_BITS) - 1) -#define WQ_ENET_MSS_BITS 14 -#define WQ_ENET_MSS_MASK ((1 << WQ_ENET_MSS_BITS) - 1) -#define WQ_ENET_MSS_SHIFT 2 -#define WQ_ENET_LOOPBACK_SHIFT 1 -#define WQ_ENET_HDRLEN_BITS 10 -#define WQ_ENET_HDRLEN_MASK ((1 << WQ_ENET_HDRLEN_BITS) - 1) -#define WQ_ENET_FLAGS_OM_BITS 2 -#define WQ_ENET_FLAGS_OM_MASK ((1 << WQ_ENET_FLAGS_OM_BITS) - 1) -#define WQ_ENET_FLAGS_EOP_SHIFT 12 -#define WQ_ENET_FLAGS_CQ_ENTRY_SHIFT 13 -#define WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT 14 -#define WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT 15 - -#define WQ_ENET_OFFLOAD_MODE_CSUM 0 -#define WQ_ENET_OFFLOAD_MODE_RESERVED 1 -#define WQ_ENET_OFFLOAD_MODE_CSUM_L4 2 -#define WQ_ENET_OFFLOAD_MODE_TSO 3 - -static inline void wq_enet_desc_enc(struct wq_enet_desc *desc, - u64 address, u16 length, u16 mss, u16 header_length, - u8 offload_mode, u8 eop, u8 cq_entry, u8 fcoe_encap, - u8 vlan_tag_insert, u16 vlan_tag, u8 loopback) -{ - desc->address = cpu_to_le64(address); - desc->length = cpu_to_le16(length & WQ_ENET_LEN_MASK); - desc->mss_loopback = cpu_to_le16((mss & WQ_ENET_MSS_MASK) << - WQ_ENET_MSS_SHIFT | (loopback & 1) << WQ_ENET_LOOPBACK_SHIFT); - desc->header_length_flags = cpu_to_le16( - (header_length & WQ_ENET_HDRLEN_MASK) | - (offload_mode & WQ_ENET_FLAGS_OM_MASK) << WQ_ENET_HDRLEN_BITS | - (eop & 1) << WQ_ENET_FLAGS_EOP_SHIFT | - (cq_entry & 1) << WQ_ENET_FLAGS_CQ_ENTRY_SHIFT | - (fcoe_encap & 1) << WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT | - (vlan_tag_insert & 1) << WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT); - desc->vlan_tag = cpu_to_le16(vlan_tag); -} - -static inline void wq_enet_desc_dec(struct wq_enet_desc *desc, - u64 *address, u16 *length, u16 *mss, u16 *header_length, - u8 *offload_mode, u8 *eop, u8 *cq_entry, u8 *fcoe_encap, - u8 *vlan_tag_insert, u16 *vlan_tag, u8 *loopback) -{ - *address = le64_to_cpu(desc->address); - *length = le16_to_cpu(desc->length) & WQ_ENET_LEN_MASK; - *mss = (le16_to_cpu(desc->mss_loopback) >> WQ_ENET_MSS_SHIFT) & - WQ_ENET_MSS_MASK; - *loopback = (u8)((le16_to_cpu(desc->mss_loopback) >> - WQ_ENET_LOOPBACK_SHIFT) & 1); - *header_length = le16_to_cpu(desc->header_length_flags) & - WQ_ENET_HDRLEN_MASK; - *offload_mode = (u8)((le16_to_cpu(desc->header_length_flags) >> - WQ_ENET_HDRLEN_BITS) & WQ_ENET_FLAGS_OM_MASK); - *eop = (u8)((le16_to_cpu(desc->header_length_flags) >> - WQ_ENET_FLAGS_EOP_SHIFT) & 1); - *cq_entry = (u8)((le16_to_cpu(desc->header_length_flags) >> - WQ_ENET_FLAGS_CQ_ENTRY_SHIFT) & 1); - *fcoe_encap = (u8)((le16_to_cpu(desc->header_length_flags) >> - WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT) & 1); - *vlan_tag_insert = (u8)((le16_to_cpu(desc->header_length_flags) >> - WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT) & 1); - *vlan_tag = le16_to_cpu(desc->vlan_tag); -} - -#endif /* _WQ_ENET_DESC_H_ */ diff --git a/drivers/net/ethernet/Kconfig b/drivers/net/ethernet/Kconfig index f23f1b26b64..18b634e2750 100644 --- a/drivers/net/ethernet/Kconfig +++ b/drivers/net/ethernet/Kconfig @@ -17,6 +17,7 @@ source "drivers/net/ethernet/amd/Kconfig" source "drivers/net/ethernet/broadcom/Kconfig" source "drivers/net/ethernet/brocade/Kconfig" source "drivers/net/ethernet/chelsio/Kconfig" +source "drivers/net/ethernet/cisco/Kconfig" source "drivers/net/ethernet/emulex/Kconfig" source "drivers/net/ethernet/neterion/Kconfig" source "drivers/net/ethernet/ibm/Kconfig" diff --git a/drivers/net/ethernet/Makefile b/drivers/net/ethernet/Makefile index 27e4da65813..288179b3d0c 100644 --- a/drivers/net/ethernet/Makefile +++ b/drivers/net/ethernet/Makefile @@ -8,6 +8,7 @@ obj-$(CONFIG_NET_VENDOR_AMD) += amd/ obj-$(CONFIG_NET_VENDOR_BROADCOM) += broadcom/ obj-$(CONFIG_NET_VENDOR_BROCADE) += brocade/ obj-$(CONFIG_NET_VENDOR_CHELSIO) += chelsio/ +obj-$(CONFIG_NET_VENDOR_CISCO) += cisco/ obj-$(CONFIG_NET_VENDOR_EMULEX) += emulex/ obj-$(CONFIG_NET_VENDOR_EXAR) += neterion/ obj-$(CONFIG_NET_VENDOR_IBM) += ibm/ diff --git a/drivers/net/ethernet/cisco/Kconfig b/drivers/net/ethernet/cisco/Kconfig new file mode 100644 index 00000000000..bbd53488067 --- /dev/null +++ b/drivers/net/ethernet/cisco/Kconfig @@ -0,0 +1,22 @@ +# +# Cisco device configuration +# + +config NET_VENDOR_CISCO + bool "Cisco devices" + depends on PCI && INET + ---help--- + If you have a network (Ethernet) card belonging to this class, say Y + and read the Ethernet-HOWTO, available from + . + + Note that the answer to this question doesn't directly affect the + kernel: saying N will just cause the configurator to skip all + the questions about Cisco cards. If you say Y, you will be asked for + your specific card in the following questions. + +if NET_VENDOR_CISCO + +source "drivers/net/ethernet/cisco/enic/Kconfig" + +endif # NET_VENDOR_CISCO diff --git a/drivers/net/ethernet/cisco/Makefile b/drivers/net/ethernet/cisco/Makefile new file mode 100644 index 00000000000..6c7437bc4a9 --- /dev/null +++ b/drivers/net/ethernet/cisco/Makefile @@ -0,0 +1,5 @@ +# +# Makefile for the Cisco device drivers. +# + +obj-$(CONFIG_ENIC) += enic/ diff --git a/drivers/net/ethernet/cisco/enic/Kconfig b/drivers/net/ethernet/cisco/enic/Kconfig new file mode 100644 index 00000000000..9cc706a6cff --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/Kconfig @@ -0,0 +1,9 @@ +# +# Cisco device configuration +# + +config ENIC + tristate "Cisco VIC Ethernet NIC Support" + depends on PCI && INET + ---help--- + This enables the support for the Cisco VIC Ethernet card. diff --git a/drivers/net/ethernet/cisco/enic/Makefile b/drivers/net/ethernet/cisco/enic/Makefile new file mode 100644 index 00000000000..9d4974bba24 --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/Makefile @@ -0,0 +1,5 @@ +obj-$(CONFIG_ENIC) := enic.o + +enic-y := enic_main.o vnic_cq.o vnic_intr.o vnic_wq.o \ + enic_res.o enic_dev.o enic_pp.o vnic_dev.o vnic_rq.o vnic_vic.o + diff --git a/drivers/net/ethernet/cisco/enic/cq_desc.h b/drivers/net/ethernet/cisco/enic/cq_desc.h new file mode 100644 index 00000000000..d6dd1b4edf6 --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/cq_desc.h @@ -0,0 +1,80 @@ +/* + * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#ifndef _CQ_DESC_H_ +#define _CQ_DESC_H_ + +/* + * Completion queue descriptor types + */ +enum cq_desc_types { + CQ_DESC_TYPE_WQ_ENET = 0, + CQ_DESC_TYPE_DESC_COPY = 1, + CQ_DESC_TYPE_WQ_EXCH = 2, + CQ_DESC_TYPE_RQ_ENET = 3, + CQ_DESC_TYPE_RQ_FCP = 4, +}; + +/* Completion queue descriptor: 16B + * + * All completion queues have this basic layout. The + * type_specfic area is unique for each completion + * queue type. + */ +struct cq_desc { + __le16 completed_index; + __le16 q_number; + u8 type_specfic[11]; + u8 type_color; +}; + +#define CQ_DESC_TYPE_BITS 4 +#define CQ_DESC_TYPE_MASK ((1 << CQ_DESC_TYPE_BITS) - 1) +#define CQ_DESC_COLOR_MASK 1 +#define CQ_DESC_COLOR_SHIFT 7 +#define CQ_DESC_Q_NUM_BITS 10 +#define CQ_DESC_Q_NUM_MASK ((1 << CQ_DESC_Q_NUM_BITS) - 1) +#define CQ_DESC_COMP_NDX_BITS 12 +#define CQ_DESC_COMP_NDX_MASK ((1 << CQ_DESC_COMP_NDX_BITS) - 1) + +static inline void cq_desc_dec(const struct cq_desc *desc_arg, + u8 *type, u8 *color, u16 *q_number, u16 *completed_index) +{ + const struct cq_desc *desc = desc_arg; + const u8 type_color = desc->type_color; + + *color = (type_color >> CQ_DESC_COLOR_SHIFT) & CQ_DESC_COLOR_MASK; + + /* + * Make sure color bit is read from desc *before* other fields + * are read from desc. Hardware guarantees color bit is last + * bit (byte) written. Adding the rmb() prevents the compiler + * and/or CPU from reordering the reads which would potentially + * result in reading stale values. + */ + + rmb(); + + *type = type_color & CQ_DESC_TYPE_MASK; + *q_number = le16_to_cpu(desc->q_number) & CQ_DESC_Q_NUM_MASK; + *completed_index = le16_to_cpu(desc->completed_index) & + CQ_DESC_COMP_NDX_MASK; +} + +#endif /* _CQ_DESC_H_ */ diff --git a/drivers/net/ethernet/cisco/enic/cq_enet_desc.h b/drivers/net/ethernet/cisco/enic/cq_enet_desc.h new file mode 100644 index 00000000000..c2c0680a114 --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/cq_enet_desc.h @@ -0,0 +1,185 @@ +/* + * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#ifndef _CQ_ENET_DESC_H_ +#define _CQ_ENET_DESC_H_ + +#include "cq_desc.h" + +/* Ethernet completion queue descriptor: 16B */ +struct cq_enet_wq_desc { + __le16 completed_index; + __le16 q_number; + u8 reserved[11]; + u8 type_color; +}; + +static inline void cq_enet_wq_desc_dec(struct cq_enet_wq_desc *desc, + u8 *type, u8 *color, u16 *q_number, u16 *completed_index) +{ + cq_desc_dec((struct cq_desc *)desc, type, + color, q_number, completed_index); +} + +/* Completion queue descriptor: Ethernet receive queue, 16B */ +struct cq_enet_rq_desc { + __le16 completed_index_flags; + __le16 q_number_rss_type_flags; + __le32 rss_hash; + __le16 bytes_written_flags; + __le16 vlan; + __le16 checksum_fcoe; + u8 flags; + u8 type_color; +}; + +#define CQ_ENET_RQ_DESC_FLAGS_INGRESS_PORT (0x1 << 12) +#define CQ_ENET_RQ_DESC_FLAGS_FCOE (0x1 << 13) +#define CQ_ENET_RQ_DESC_FLAGS_EOP (0x1 << 14) +#define CQ_ENET_RQ_DESC_FLAGS_SOP (0x1 << 15) + +#define CQ_ENET_RQ_DESC_RSS_TYPE_BITS 4 +#define CQ_ENET_RQ_DESC_RSS_TYPE_MASK \ + ((1 << CQ_ENET_RQ_DESC_RSS_TYPE_BITS) - 1) +#define CQ_ENET_RQ_DESC_RSS_TYPE_NONE 0 +#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv4 1 +#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv4 2 +#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv6 3 +#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv6 4 +#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv6_EX 5 +#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv6_EX 6 + +#define CQ_ENET_RQ_DESC_FLAGS_CSUM_NOT_CALC (0x1 << 14) + +#define CQ_ENET_RQ_DESC_BYTES_WRITTEN_BITS 14 +#define CQ_ENET_RQ_DESC_BYTES_WRITTEN_MASK \ + ((1 << CQ_ENET_RQ_DESC_BYTES_WRITTEN_BITS) - 1) +#define CQ_ENET_RQ_DESC_FLAGS_TRUNCATED (0x1 << 14) +#define CQ_ENET_RQ_DESC_FLAGS_VLAN_STRIPPED (0x1 << 15) + +#define CQ_ENET_RQ_DESC_VLAN_TCI_VLAN_BITS 12 +#define CQ_ENET_RQ_DESC_VLAN_TCI_VLAN_MASK \ + ((1 << CQ_ENET_RQ_DESC_VLAN_TCI_VLAN_BITS) - 1) +#define CQ_ENET_RQ_DESC_VLAN_TCI_CFI_MASK (0x1 << 12) +#define CQ_ENET_RQ_DESC_VLAN_TCI_USER_PRIO_BITS 3 +#define CQ_ENET_RQ_DESC_VLAN_TCI_USER_PRIO_MASK \ + ((1 << CQ_ENET_RQ_DESC_VLAN_TCI_USER_PRIO_BITS) - 1) +#define CQ_ENET_RQ_DESC_VLAN_TCI_USER_PRIO_SHIFT 13 + +#define CQ_ENET_RQ_DESC_FCOE_SOF_BITS 8 +#define CQ_ENET_RQ_DESC_FCOE_SOF_MASK \ + ((1 << CQ_ENET_RQ_DESC_FCOE_SOF_BITS) - 1) +#define CQ_ENET_RQ_DESC_FCOE_EOF_BITS 8 +#define CQ_ENET_RQ_DESC_FCOE_EOF_MASK \ + ((1 << CQ_ENET_RQ_DESC_FCOE_EOF_BITS) - 1) +#define CQ_ENET_RQ_DESC_FCOE_EOF_SHIFT 8 + +#define CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK (0x1 << 0) +#define CQ_ENET_RQ_DESC_FCOE_FC_CRC_OK (0x1 << 0) +#define CQ_ENET_RQ_DESC_FLAGS_UDP (0x1 << 1) +#define CQ_ENET_RQ_DESC_FCOE_ENC_ERROR (0x1 << 1) +#define CQ_ENET_RQ_DESC_FLAGS_TCP (0x1 << 2) +#define CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK (0x1 << 3) +#define CQ_ENET_RQ_DESC_FLAGS_IPV6 (0x1 << 4) +#define CQ_ENET_RQ_DESC_FLAGS_IPV4 (0x1 << 5) +#define CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT (0x1 << 6) +#define CQ_ENET_RQ_DESC_FLAGS_FCS_OK (0x1 << 7) + +static inline void cq_enet_rq_desc_dec(struct cq_enet_rq_desc *desc, + u8 *type, u8 *color, u16 *q_number, u16 *completed_index, + u8 *ingress_port, u8 *fcoe, u8 *eop, u8 *sop, u8 *rss_type, + u8 *csum_not_calc, u32 *rss_hash, u16 *bytes_written, u8 *packet_error, + u8 *vlan_stripped, u16 *vlan_tci, u16 *checksum, u8 *fcoe_sof, + u8 *fcoe_fc_crc_ok, u8 *fcoe_enc_error, u8 *fcoe_eof, + u8 *tcp_udp_csum_ok, u8 *udp, u8 *tcp, u8 *ipv4_csum_ok, + u8 *ipv6, u8 *ipv4, u8 *ipv4_fragment, u8 *fcs_ok) +{ + u16 completed_index_flags; + u16 q_number_rss_type_flags; + u16 bytes_written_flags; + + cq_desc_dec((struct cq_desc *)desc, type, + color, q_number, completed_index); + + completed_index_flags = le16_to_cpu(desc->completed_index_flags); + q_number_rss_type_flags = + le16_to_cpu(desc->q_number_rss_type_flags); + bytes_written_flags = le16_to_cpu(desc->bytes_written_flags); + + *ingress_port = (completed_index_flags & + CQ_ENET_RQ_DESC_FLAGS_INGRESS_PORT) ? 1 : 0; + *fcoe = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_FCOE) ? + 1 : 0; + *eop = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_EOP) ? + 1 : 0; + *sop = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_SOP) ? + 1 : 0; + + *rss_type = (u8)((q_number_rss_type_flags >> CQ_DESC_Q_NUM_BITS) & + CQ_ENET_RQ_DESC_RSS_TYPE_MASK); + *csum_not_calc = (q_number_rss_type_flags & + CQ_ENET_RQ_DESC_FLAGS_CSUM_NOT_CALC) ? 1 : 0; + + *rss_hash = le32_to_cpu(desc->rss_hash); + + *bytes_written = bytes_written_flags & + CQ_ENET_RQ_DESC_BYTES_WRITTEN_MASK; + *packet_error = (bytes_written_flags & + CQ_ENET_RQ_DESC_FLAGS_TRUNCATED) ? 1 : 0; + *vlan_stripped = (bytes_written_flags & + CQ_ENET_RQ_DESC_FLAGS_VLAN_STRIPPED) ? 1 : 0; + + /* + * Tag Control Information(16) = user_priority(3) + cfi(1) + vlan(12) + */ + *vlan_tci = le16_to_cpu(desc->vlan); + + if (*fcoe) { + *fcoe_sof = (u8)(le16_to_cpu(desc->checksum_fcoe) & + CQ_ENET_RQ_DESC_FCOE_SOF_MASK); + *fcoe_fc_crc_ok = (desc->flags & + CQ_ENET_RQ_DESC_FCOE_FC_CRC_OK) ? 1 : 0; + *fcoe_enc_error = (desc->flags & + CQ_ENET_RQ_DESC_FCOE_ENC_ERROR) ? 1 : 0; + *fcoe_eof = (u8)((desc->checksum_fcoe >> + CQ_ENET_RQ_DESC_FCOE_EOF_SHIFT) & + CQ_ENET_RQ_DESC_FCOE_EOF_MASK); + *checksum = 0; + } else { + *fcoe_sof = 0; + *fcoe_fc_crc_ok = 0; + *fcoe_enc_error = 0; + *fcoe_eof = 0; + *checksum = le16_to_cpu(desc->checksum_fcoe); + } + + *tcp_udp_csum_ok = + (desc->flags & CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK) ? 1 : 0; + *udp = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_UDP) ? 1 : 0; + *tcp = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_TCP) ? 1 : 0; + *ipv4_csum_ok = + (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK) ? 1 : 0; + *ipv6 = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV6) ? 1 : 0; + *ipv4 = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4) ? 1 : 0; + *ipv4_fragment = + (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT) ? 1 : 0; + *fcs_ok = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_FCS_OK) ? 1 : 0; +} + +#endif /* _CQ_ENET_DESC_H_ */ diff --git a/drivers/net/ethernet/cisco/enic/enic.h b/drivers/net/ethernet/cisco/enic/enic.h new file mode 100644 index 00000000000..ce76d9a8ca6 --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/enic.h @@ -0,0 +1,124 @@ +/* + * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#ifndef _ENIC_H_ +#define _ENIC_H_ + +#include "vnic_enet.h" +#include "vnic_dev.h" +#include "vnic_wq.h" +#include "vnic_rq.h" +#include "vnic_cq.h" +#include "vnic_intr.h" +#include "vnic_stats.h" +#include "vnic_nic.h" +#include "vnic_rss.h" + +#define DRV_NAME "enic" +#define DRV_DESCRIPTION "Cisco VIC Ethernet NIC Driver" +#define DRV_VERSION "2.1.1.24" +#define DRV_COPYRIGHT "Copyright 2008-2011 Cisco Systems, Inc" + +#define ENIC_BARS_MAX 6 + +#define ENIC_WQ_MAX 1 +#define ENIC_RQ_MAX 1 +#define ENIC_CQ_MAX (ENIC_WQ_MAX + ENIC_RQ_MAX) +#define ENIC_INTR_MAX (ENIC_CQ_MAX + 2) + +struct enic_msix_entry { + int requested; + char devname[IFNAMSIZ]; + irqreturn_t (*isr)(int, void *); + void *devid; +}; + +#define ENIC_PORT_REQUEST_APPLIED (1 << 0) +#define ENIC_SET_REQUEST (1 << 1) +#define ENIC_SET_NAME (1 << 2) +#define ENIC_SET_INSTANCE (1 << 3) +#define ENIC_SET_HOST (1 << 4) + +struct enic_port_profile { + u32 set; + u8 request; + char name[PORT_PROFILE_MAX]; + u8 instance_uuid[PORT_UUID_MAX]; + u8 host_uuid[PORT_UUID_MAX]; + u8 vf_mac[ETH_ALEN]; + u8 mac_addr[ETH_ALEN]; +}; + +/* Per-instance private data structure */ +struct enic { + struct net_device *netdev; + struct pci_dev *pdev; + struct vnic_enet_config config; + struct vnic_dev_bar bar[ENIC_BARS_MAX]; + struct vnic_dev *vdev; + struct timer_list notify_timer; + struct work_struct reset; + struct work_struct change_mtu_work; + struct msix_entry msix_entry[ENIC_INTR_MAX]; + struct enic_msix_entry msix[ENIC_INTR_MAX]; + u32 msg_enable; + spinlock_t devcmd_lock; + u8 mac_addr[ETH_ALEN]; + u8 mc_addr[ENIC_MULTICAST_PERFECT_FILTERS][ETH_ALEN]; + u8 uc_addr[ENIC_UNICAST_PERFECT_FILTERS][ETH_ALEN]; + unsigned int flags; + unsigned int mc_count; + unsigned int uc_count; + u32 port_mtu; + u32 rx_coalesce_usecs; + u32 tx_coalesce_usecs; + struct enic_port_profile pp; + + /* work queue cache line section */ + ____cacheline_aligned struct vnic_wq wq[ENIC_WQ_MAX]; + spinlock_t wq_lock[ENIC_WQ_MAX]; + unsigned int wq_count; + u16 loop_enable; + u16 loop_tag; + + /* receive queue cache line section */ + ____cacheline_aligned struct vnic_rq rq[ENIC_RQ_MAX]; + unsigned int rq_count; + u64 rq_truncated_pkts; + u64 rq_bad_fcs; + struct napi_struct napi[ENIC_RQ_MAX]; + + /* interrupt resource cache line section */ + ____cacheline_aligned struct vnic_intr intr[ENIC_INTR_MAX]; + unsigned int intr_count; + u32 __iomem *legacy_pba; /* memory-mapped */ + + /* completion queue cache line section */ + ____cacheline_aligned struct vnic_cq cq[ENIC_CQ_MAX]; + unsigned int cq_count; +}; + +static inline struct device *enic_get_dev(struct enic *enic) +{ + return &(enic->pdev->dev); +} + +void enic_reset_addr_lists(struct enic *enic); + +#endif /* _ENIC_H_ */ diff --git a/drivers/net/ethernet/cisco/enic/enic_dev.c b/drivers/net/ethernet/cisco/enic/enic_dev.c new file mode 100644 index 00000000000..fd6247b3c0e --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/enic_dev.c @@ -0,0 +1,286 @@ +/* + * Copyright 2011 Cisco Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#include +#include + +#include "vnic_dev.h" +#include "vnic_vic.h" +#include "enic_res.h" +#include "enic.h" +#include "enic_dev.h" + +int enic_dev_fw_info(struct enic *enic, struct vnic_devcmd_fw_info **fw_info) +{ + int err; + + spin_lock(&enic->devcmd_lock); + err = vnic_dev_fw_info(enic->vdev, fw_info); + spin_unlock(&enic->devcmd_lock); + + return err; +} + +int enic_dev_stats_dump(struct enic *enic, struct vnic_stats **vstats) +{ + int err; + + spin_lock(&enic->devcmd_lock); + err = vnic_dev_stats_dump(enic->vdev, vstats); + spin_unlock(&enic->devcmd_lock); + + return err; +} + +int enic_dev_add_station_addr(struct enic *enic) +{ + int err; + + if (!is_valid_ether_addr(enic->netdev->dev_addr)) + return -EADDRNOTAVAIL; + + spin_lock(&enic->devcmd_lock); + err = vnic_dev_add_addr(enic->vdev, enic->netdev->dev_addr); + spin_unlock(&enic->devcmd_lock); + + return err; +} + +int enic_dev_del_station_addr(struct enic *enic) +{ + int err; + + if (!is_valid_ether_addr(enic->netdev->dev_addr)) + return -EADDRNOTAVAIL; + + spin_lock(&enic->devcmd_lock); + err = vnic_dev_del_addr(enic->vdev, enic->netdev->dev_addr); + spin_unlock(&enic->devcmd_lock); + + return err; +} + +int enic_dev_packet_filter(struct enic *enic, int directed, int multicast, + int broadcast, int promisc, int allmulti) +{ + int err; + + spin_lock(&enic->devcmd_lock); + err = vnic_dev_packet_filter(enic->vdev, directed, + multicast, broadcast, promisc, allmulti); + spin_unlock(&enic->devcmd_lock); + + return err; +} + +int enic_dev_add_addr(struct enic *enic, u8 *addr) +{ + int err; + + spin_lock(&enic->devcmd_lock); + err = vnic_dev_add_addr(enic->vdev, addr); + spin_unlock(&enic->devcmd_lock); + + return err; +} + +int enic_dev_del_addr(struct enic *enic, u8 *addr) +{ + int err; + + spin_lock(&enic->devcmd_lock); + err = vnic_dev_del_addr(enic->vdev, addr); + spin_unlock(&enic->devcmd_lock); + + return err; +} + +int enic_dev_notify_unset(struct enic *enic) +{ + int err; + + spin_lock(&enic->devcmd_lock); + err = vnic_dev_notify_unset(enic->vdev); + spin_unlock(&enic->devcmd_lock); + + return err; +} + +int enic_dev_hang_notify(struct enic *enic) +{ + int err; + + spin_lock(&enic->devcmd_lock); + err = vnic_dev_hang_notify(enic->vdev); + spin_unlock(&enic->devcmd_lock); + + return err; +} + +int enic_dev_set_ig_vlan_rewrite_mode(struct enic *enic) +{ + int err; + + spin_lock(&enic->devcmd_lock); + err = vnic_dev_set_ig_vlan_rewrite_mode(enic->vdev, + IG_VLAN_REWRITE_MODE_PRIORITY_TAG_DEFAULT_VLAN); + spin_unlock(&enic->devcmd_lock); + + return err; +} + +int enic_dev_enable(struct enic *enic) +{ + int err; + + spin_lock(&enic->devcmd_lock); + err = vnic_dev_enable_wait(enic->vdev); + spin_unlock(&enic->devcmd_lock); + + return err; +} + +int enic_dev_disable(struct enic *enic) +{ + int err; + + spin_lock(&enic->devcmd_lock); + err = vnic_dev_disable(enic->vdev); + spin_unlock(&enic->devcmd_lock); + + return err; +} + +int enic_dev_intr_coal_timer_info(struct enic *enic) +{ + int err; + + spin_lock(&enic->devcmd_lock); + err = vnic_dev_intr_coal_timer_info(enic->vdev); + spin_unlock(&enic->devcmd_lock); + + return err; +} + +int enic_vnic_dev_deinit(struct enic *enic) +{ + int err; + + spin_lock(&enic->devcmd_lock); + err = vnic_dev_deinit(enic->vdev); + spin_unlock(&enic->devcmd_lock); + + return err; +} + +int enic_dev_init_prov2(struct enic *enic, struct vic_provinfo *vp) +{ + int err; + + spin_lock(&enic->devcmd_lock); + err = vnic_dev_init_prov2(enic->vdev, + (u8 *)vp, vic_provinfo_size(vp)); + spin_unlock(&enic->devcmd_lock); + + return err; +} + +int enic_dev_deinit_done(struct enic *enic, int *status) +{ + int err; + + spin_lock(&enic->devcmd_lock); + err = vnic_dev_deinit_done(enic->vdev, status); + spin_unlock(&enic->devcmd_lock); + + return err; +} + +/* rtnl lock is held */ +void enic_vlan_rx_add_vid(struct net_device *netdev, u16 vid) +{ + struct enic *enic = netdev_priv(netdev); + + spin_lock(&enic->devcmd_lock); + enic_add_vlan(enic, vid); + spin_unlock(&enic->devcmd_lock); +} + +/* rtnl lock is held */ +void enic_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) +{ + struct enic *enic = netdev_priv(netdev); + + spin_lock(&enic->devcmd_lock); + enic_del_vlan(enic, vid); + spin_unlock(&enic->devcmd_lock); +} + +int enic_dev_enable2(struct enic *enic, int active) +{ + int err; + + spin_lock(&enic->devcmd_lock); + err = vnic_dev_enable2(enic->vdev, active); + spin_unlock(&enic->devcmd_lock); + + return err; +} + +int enic_dev_enable2_done(struct enic *enic, int *status) +{ + int err; + + spin_lock(&enic->devcmd_lock); + err = vnic_dev_enable2_done(enic->vdev, status); + spin_unlock(&enic->devcmd_lock); + + return err; +} + +int enic_dev_status_to_errno(int devcmd_status) +{ + switch (devcmd_status) { + case ERR_SUCCESS: + return 0; + case ERR_EINVAL: + return -EINVAL; + case ERR_EFAULT: + return -EFAULT; + case ERR_EPERM: + return -EPERM; + case ERR_EBUSY: + return -EBUSY; + case ERR_ECMDUNKNOWN: + case ERR_ENOTSUPPORTED: + return -EOPNOTSUPP; + case ERR_EBADSTATE: + return -EINVAL; + case ERR_ENOMEM: + return -ENOMEM; + case ERR_ETIMEDOUT: + return -ETIMEDOUT; + case ERR_ELINKDOWN: + return -ENETDOWN; + case ERR_EINPROGRESS: + return -EINPROGRESS; + case ERR_EMAXRES: + default: + return (devcmd_status < 0) ? devcmd_status : -1; + } +} diff --git a/drivers/net/ethernet/cisco/enic/enic_dev.h b/drivers/net/ethernet/cisco/enic/enic_dev.h new file mode 100644 index 00000000000..ff8e87fdfc1 --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/enic_dev.h @@ -0,0 +1,45 @@ +/* + * Copyright 2011 Cisco Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#ifndef _ENIC_DEV_H_ +#define _ENIC_DEV_H_ + +int enic_dev_fw_info(struct enic *enic, struct vnic_devcmd_fw_info **fw_info); +int enic_dev_stats_dump(struct enic *enic, struct vnic_stats **vstats); +int enic_dev_add_station_addr(struct enic *enic); +int enic_dev_del_station_addr(struct enic *enic); +int enic_dev_packet_filter(struct enic *enic, int directed, int multicast, + int broadcast, int promisc, int allmulti); +int enic_dev_add_addr(struct enic *enic, u8 *addr); +int enic_dev_del_addr(struct enic *enic, u8 *addr); +void enic_vlan_rx_add_vid(struct net_device *netdev, u16 vid); +void enic_vlan_rx_kill_vid(struct net_device *netdev, u16 vid); +int enic_dev_notify_unset(struct enic *enic); +int enic_dev_hang_notify(struct enic *enic); +int enic_dev_set_ig_vlan_rewrite_mode(struct enic *enic); +int enic_dev_enable(struct enic *enic); +int enic_dev_disable(struct enic *enic); +int enic_dev_intr_coal_timer_info(struct enic *enic); +int enic_vnic_dev_deinit(struct enic *enic); +int enic_dev_init_prov2(struct enic *enic, struct vic_provinfo *vp); +int enic_dev_deinit_done(struct enic *enic, int *status); +int enic_dev_enable2(struct enic *enic, int arg); +int enic_dev_enable2_done(struct enic *enic, int *status); +int enic_dev_status_to_errno(int devcmd_status); + +#endif /* _ENIC_DEV_H_ */ diff --git a/drivers/net/ethernet/cisco/enic/enic_main.c b/drivers/net/ethernet/cisco/enic/enic_main.c new file mode 100644 index 00000000000..67a27cd304d --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/enic_main.c @@ -0,0 +1,2513 @@ +/* + * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "cq_enet_desc.h" +#include "vnic_dev.h" +#include "vnic_intr.h" +#include "vnic_stats.h" +#include "vnic_vic.h" +#include "enic_res.h" +#include "enic.h" +#include "enic_dev.h" +#include "enic_pp.h" + +#define ENIC_NOTIFY_TIMER_PERIOD (2 * HZ) +#define WQ_ENET_MAX_DESC_LEN (1 << WQ_ENET_LEN_BITS) +#define MAX_TSO (1 << 16) +#define ENIC_DESC_MAX_SPLITS (MAX_TSO / WQ_ENET_MAX_DESC_LEN + 1) + +#define PCI_DEVICE_ID_CISCO_VIC_ENET 0x0043 /* ethernet vnic */ +#define PCI_DEVICE_ID_CISCO_VIC_ENET_DYN 0x0044 /* enet dynamic vnic */ + +/* Supported devices */ +static DEFINE_PCI_DEVICE_TABLE(enic_id_table) = { + { PCI_VDEVICE(CISCO, PCI_DEVICE_ID_CISCO_VIC_ENET) }, + { PCI_VDEVICE(CISCO, PCI_DEVICE_ID_CISCO_VIC_ENET_DYN) }, + { 0, } /* end of table */ +}; + +MODULE_DESCRIPTION(DRV_DESCRIPTION); +MODULE_AUTHOR("Scott Feldman "); +MODULE_LICENSE("GPL"); +MODULE_VERSION(DRV_VERSION); +MODULE_DEVICE_TABLE(pci, enic_id_table); + +struct enic_stat { + char name[ETH_GSTRING_LEN]; + unsigned int offset; +}; + +#define ENIC_TX_STAT(stat) \ + { .name = #stat, .offset = offsetof(struct vnic_tx_stats, stat) / 8 } +#define ENIC_RX_STAT(stat) \ + { .name = #stat, .offset = offsetof(struct vnic_rx_stats, stat) / 8 } + +static const struct enic_stat enic_tx_stats[] = { + ENIC_TX_STAT(tx_frames_ok), + ENIC_TX_STAT(tx_unicast_frames_ok), + ENIC_TX_STAT(tx_multicast_frames_ok), + ENIC_TX_STAT(tx_broadcast_frames_ok), + ENIC_TX_STAT(tx_bytes_ok), + ENIC_TX_STAT(tx_unicast_bytes_ok), + ENIC_TX_STAT(tx_multicast_bytes_ok), + ENIC_TX_STAT(tx_broadcast_bytes_ok), + ENIC_TX_STAT(tx_drops), + ENIC_TX_STAT(tx_errors), + ENIC_TX_STAT(tx_tso), +}; + +static const struct enic_stat enic_rx_stats[] = { + ENIC_RX_STAT(rx_frames_ok), + ENIC_RX_STAT(rx_frames_total), + ENIC_RX_STAT(rx_unicast_frames_ok), + ENIC_RX_STAT(rx_multicast_frames_ok), + ENIC_RX_STAT(rx_broadcast_frames_ok), + ENIC_RX_STAT(rx_bytes_ok), + ENIC_RX_STAT(rx_unicast_bytes_ok), + ENIC_RX_STAT(rx_multicast_bytes_ok), + ENIC_RX_STAT(rx_broadcast_bytes_ok), + ENIC_RX_STAT(rx_drop), + ENIC_RX_STAT(rx_no_bufs), + ENIC_RX_STAT(rx_errors), + ENIC_RX_STAT(rx_rss), + ENIC_RX_STAT(rx_crc_errors), + ENIC_RX_STAT(rx_frames_64), + ENIC_RX_STAT(rx_frames_127), + ENIC_RX_STAT(rx_frames_255), + ENIC_RX_STAT(rx_frames_511), + ENIC_RX_STAT(rx_frames_1023), + ENIC_RX_STAT(rx_frames_1518), + ENIC_RX_STAT(rx_frames_to_max), +}; + +static const unsigned int enic_n_tx_stats = ARRAY_SIZE(enic_tx_stats); +static const unsigned int enic_n_rx_stats = ARRAY_SIZE(enic_rx_stats); + +static int enic_is_dynamic(struct enic *enic) +{ + return enic->pdev->device == PCI_DEVICE_ID_CISCO_VIC_ENET_DYN; +} + +static inline unsigned int enic_cq_rq(struct enic *enic, unsigned int rq) +{ + return rq; +} + +static inline unsigned int enic_cq_wq(struct enic *enic, unsigned int wq) +{ + return enic->rq_count + wq; +} + +static inline unsigned int enic_legacy_io_intr(void) +{ + return 0; +} + +static inline unsigned int enic_legacy_err_intr(void) +{ + return 1; +} + +static inline unsigned int enic_legacy_notify_intr(void) +{ + return 2; +} + +static inline unsigned int enic_msix_rq_intr(struct enic *enic, unsigned int rq) +{ + return enic->cq[enic_cq_rq(enic, rq)].interrupt_offset; +} + +static inline unsigned int enic_msix_wq_intr(struct enic *enic, unsigned int wq) +{ + return enic->cq[enic_cq_wq(enic, wq)].interrupt_offset; +} + +static inline unsigned int enic_msix_err_intr(struct enic *enic) +{ + return enic->rq_count + enic->wq_count; +} + +static inline unsigned int enic_msix_notify_intr(struct enic *enic) +{ + return enic->rq_count + enic->wq_count + 1; +} + +static int enic_get_settings(struct net_device *netdev, + struct ethtool_cmd *ecmd) +{ + struct enic *enic = netdev_priv(netdev); + + ecmd->supported = (SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE); + ecmd->advertising = (ADVERTISED_10000baseT_Full | ADVERTISED_FIBRE); + ecmd->port = PORT_FIBRE; + ecmd->transceiver = XCVR_EXTERNAL; + + if (netif_carrier_ok(netdev)) { + ethtool_cmd_speed_set(ecmd, vnic_dev_port_speed(enic->vdev)); + ecmd->duplex = DUPLEX_FULL; + } else { + ethtool_cmd_speed_set(ecmd, -1); + ecmd->duplex = -1; + } + + ecmd->autoneg = AUTONEG_DISABLE; + + return 0; +} + +static void enic_get_drvinfo(struct net_device *netdev, + struct ethtool_drvinfo *drvinfo) +{ + struct enic *enic = netdev_priv(netdev); + struct vnic_devcmd_fw_info *fw_info; + + enic_dev_fw_info(enic, &fw_info); + + strncpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver)); + strncpy(drvinfo->version, DRV_VERSION, sizeof(drvinfo->version)); + strncpy(drvinfo->fw_version, fw_info->fw_version, + sizeof(drvinfo->fw_version)); + strncpy(drvinfo->bus_info, pci_name(enic->pdev), + sizeof(drvinfo->bus_info)); +} + +static void enic_get_strings(struct net_device *netdev, u32 stringset, u8 *data) +{ + unsigned int i; + + switch (stringset) { + case ETH_SS_STATS: + for (i = 0; i < enic_n_tx_stats; i++) { + memcpy(data, enic_tx_stats[i].name, ETH_GSTRING_LEN); + data += ETH_GSTRING_LEN; + } + for (i = 0; i < enic_n_rx_stats; i++) { + memcpy(data, enic_rx_stats[i].name, ETH_GSTRING_LEN); + data += ETH_GSTRING_LEN; + } + break; + } +} + +static int enic_get_sset_count(struct net_device *netdev, int sset) +{ + switch (sset) { + case ETH_SS_STATS: + return enic_n_tx_stats + enic_n_rx_stats; + default: + return -EOPNOTSUPP; + } +} + +static void enic_get_ethtool_stats(struct net_device *netdev, + struct ethtool_stats *stats, u64 *data) +{ + struct enic *enic = netdev_priv(netdev); + struct vnic_stats *vstats; + unsigned int i; + + enic_dev_stats_dump(enic, &vstats); + + for (i = 0; i < enic_n_tx_stats; i++) + *(data++) = ((u64 *)&vstats->tx)[enic_tx_stats[i].offset]; + for (i = 0; i < enic_n_rx_stats; i++) + *(data++) = ((u64 *)&vstats->rx)[enic_rx_stats[i].offset]; +} + +static u32 enic_get_msglevel(struct net_device *netdev) +{ + struct enic *enic = netdev_priv(netdev); + return enic->msg_enable; +} + +static void enic_set_msglevel(struct net_device *netdev, u32 value) +{ + struct enic *enic = netdev_priv(netdev); + enic->msg_enable = value; +} + +static int enic_get_coalesce(struct net_device *netdev, + struct ethtool_coalesce *ecmd) +{ + struct enic *enic = netdev_priv(netdev); + + ecmd->tx_coalesce_usecs = enic->tx_coalesce_usecs; + ecmd->rx_coalesce_usecs = enic->rx_coalesce_usecs; + + return 0; +} + +static int enic_set_coalesce(struct net_device *netdev, + struct ethtool_coalesce *ecmd) +{ + struct enic *enic = netdev_priv(netdev); + u32 tx_coalesce_usecs; + u32 rx_coalesce_usecs; + unsigned int i, intr; + + tx_coalesce_usecs = min_t(u32, ecmd->tx_coalesce_usecs, + vnic_dev_get_intr_coal_timer_max(enic->vdev)); + rx_coalesce_usecs = min_t(u32, ecmd->rx_coalesce_usecs, + vnic_dev_get_intr_coal_timer_max(enic->vdev)); + + switch (vnic_dev_get_intr_mode(enic->vdev)) { + case VNIC_DEV_INTR_MODE_INTX: + if (tx_coalesce_usecs != rx_coalesce_usecs) + return -EINVAL; + + intr = enic_legacy_io_intr(); + vnic_intr_coalescing_timer_set(&enic->intr[intr], + tx_coalesce_usecs); + break; + case VNIC_DEV_INTR_MODE_MSI: + if (tx_coalesce_usecs != rx_coalesce_usecs) + return -EINVAL; + + vnic_intr_coalescing_timer_set(&enic->intr[0], + tx_coalesce_usecs); + break; + case VNIC_DEV_INTR_MODE_MSIX: + for (i = 0; i < enic->wq_count; i++) { + intr = enic_msix_wq_intr(enic, i); + vnic_intr_coalescing_timer_set(&enic->intr[intr], + tx_coalesce_usecs); + } + + for (i = 0; i < enic->rq_count; i++) { + intr = enic_msix_rq_intr(enic, i); + vnic_intr_coalescing_timer_set(&enic->intr[intr], + rx_coalesce_usecs); + } + + break; + default: + break; + } + + enic->tx_coalesce_usecs = tx_coalesce_usecs; + enic->rx_coalesce_usecs = rx_coalesce_usecs; + + return 0; +} + +static const struct ethtool_ops enic_ethtool_ops = { + .get_settings = enic_get_settings, + .get_drvinfo = enic_get_drvinfo, + .get_msglevel = enic_get_msglevel, + .set_msglevel = enic_set_msglevel, + .get_link = ethtool_op_get_link, + .get_strings = enic_get_strings, + .get_sset_count = enic_get_sset_count, + .get_ethtool_stats = enic_get_ethtool_stats, + .get_coalesce = enic_get_coalesce, + .set_coalesce = enic_set_coalesce, +}; + +static void enic_free_wq_buf(struct vnic_wq *wq, struct vnic_wq_buf *buf) +{ + struct enic *enic = vnic_dev_priv(wq->vdev); + + if (buf->sop) + pci_unmap_single(enic->pdev, buf->dma_addr, + buf->len, PCI_DMA_TODEVICE); + else + pci_unmap_page(enic->pdev, buf->dma_addr, + buf->len, PCI_DMA_TODEVICE); + + if (buf->os_buf) + dev_kfree_skb_any(buf->os_buf); +} + +static void enic_wq_free_buf(struct vnic_wq *wq, + struct cq_desc *cq_desc, struct vnic_wq_buf *buf, void *opaque) +{ + enic_free_wq_buf(wq, buf); +} + +static int enic_wq_service(struct vnic_dev *vdev, struct cq_desc *cq_desc, + u8 type, u16 q_number, u16 completed_index, void *opaque) +{ + struct enic *enic = vnic_dev_priv(vdev); + + spin_lock(&enic->wq_lock[q_number]); + + vnic_wq_service(&enic->wq[q_number], cq_desc, + completed_index, enic_wq_free_buf, + opaque); + + if (netif_queue_stopped(enic->netdev) && + vnic_wq_desc_avail(&enic->wq[q_number]) >= + (MAX_SKB_FRAGS + ENIC_DESC_MAX_SPLITS)) + netif_wake_queue(enic->netdev); + + spin_unlock(&enic->wq_lock[q_number]); + + return 0; +} + +static void enic_log_q_error(struct enic *enic) +{ + unsigned int i; + u32 error_status; + + for (i = 0; i < enic->wq_count; i++) { + error_status = vnic_wq_error_status(&enic->wq[i]); + if (error_status) + netdev_err(enic->netdev, "WQ[%d] error_status %d\n", + i, error_status); + } + + for (i = 0; i < enic->rq_count; i++) { + error_status = vnic_rq_error_status(&enic->rq[i]); + if (error_status) + netdev_err(enic->netdev, "RQ[%d] error_status %d\n", + i, error_status); + } +} + +static void enic_msglvl_check(struct enic *enic) +{ + u32 msg_enable = vnic_dev_msg_lvl(enic->vdev); + + if (msg_enable != enic->msg_enable) { + netdev_info(enic->netdev, "msg lvl changed from 0x%x to 0x%x\n", + enic->msg_enable, msg_enable); + enic->msg_enable = msg_enable; + } +} + +static void enic_mtu_check(struct enic *enic) +{ + u32 mtu = vnic_dev_mtu(enic->vdev); + struct net_device *netdev = enic->netdev; + + if (mtu && mtu != enic->port_mtu) { + enic->port_mtu = mtu; + if (enic_is_dynamic(enic)) { + mtu = max_t(int, ENIC_MIN_MTU, + min_t(int, ENIC_MAX_MTU, mtu)); + if (mtu != netdev->mtu) + schedule_work(&enic->change_mtu_work); + } else { + if (mtu < netdev->mtu) + netdev_warn(netdev, + "interface MTU (%d) set higher " + "than switch port MTU (%d)\n", + netdev->mtu, mtu); + } + } +} + +static void enic_link_check(struct enic *enic) +{ + int link_status = vnic_dev_link_status(enic->vdev); + int carrier_ok = netif_carrier_ok(enic->netdev); + + if (link_status && !carrier_ok) { + netdev_info(enic->netdev, "Link UP\n"); + netif_carrier_on(enic->netdev); + } else if (!link_status && carrier_ok) { + netdev_info(enic->netdev, "Link DOWN\n"); + netif_carrier_off(enic->netdev); + } +} + +static void enic_notify_check(struct enic *enic) +{ + enic_msglvl_check(enic); + enic_mtu_check(enic); + enic_link_check(enic); +} + +#define ENIC_TEST_INTR(pba, i) (pba & (1 << i)) + +static irqreturn_t enic_isr_legacy(int irq, void *data) +{ + struct net_device *netdev = data; + struct enic *enic = netdev_priv(netdev); + unsigned int io_intr = enic_legacy_io_intr(); + unsigned int err_intr = enic_legacy_err_intr(); + unsigned int notify_intr = enic_legacy_notify_intr(); + u32 pba; + + vnic_intr_mask(&enic->intr[io_intr]); + + pba = vnic_intr_legacy_pba(enic->legacy_pba); + if (!pba) { + vnic_intr_unmask(&enic->intr[io_intr]); + return IRQ_NONE; /* not our interrupt */ + } + + if (ENIC_TEST_INTR(pba, notify_intr)) { + vnic_intr_return_all_credits(&enic->intr[notify_intr]); + enic_notify_check(enic); + } + + if (ENIC_TEST_INTR(pba, err_intr)) { + vnic_intr_return_all_credits(&enic->intr[err_intr]); + enic_log_q_error(enic); + /* schedule recovery from WQ/RQ error */ + schedule_work(&enic->reset); + return IRQ_HANDLED; + } + + if (ENIC_TEST_INTR(pba, io_intr)) { + if (napi_schedule_prep(&enic->napi[0])) + __napi_schedule(&enic->napi[0]); + } else { + vnic_intr_unmask(&enic->intr[io_intr]); + } + + return IRQ_HANDLED; +} + +static irqreturn_t enic_isr_msi(int irq, void *data) +{ + struct enic *enic = data; + + /* With MSI, there is no sharing of interrupts, so this is + * our interrupt and there is no need to ack it. The device + * is not providing per-vector masking, so the OS will not + * write to PCI config space to mask/unmask the interrupt. + * We're using mask_on_assertion for MSI, so the device + * automatically masks the interrupt when the interrupt is + * generated. Later, when exiting polling, the interrupt + * will be unmasked (see enic_poll). + * + * Also, the device uses the same PCIe Traffic Class (TC) + * for Memory Write data and MSI, so there are no ordering + * issues; the MSI will always arrive at the Root Complex + * _after_ corresponding Memory Writes (i.e. descriptor + * writes). + */ + + napi_schedule(&enic->napi[0]); + + return IRQ_HANDLED; +} + +static irqreturn_t enic_isr_msix_rq(int irq, void *data) +{ + struct napi_struct *napi = data; + + /* schedule NAPI polling for RQ cleanup */ + napi_schedule(napi); + + return IRQ_HANDLED; +} + +static irqreturn_t enic_isr_msix_wq(int irq, void *data) +{ + struct enic *enic = data; + unsigned int cq = enic_cq_wq(enic, 0); + unsigned int intr = enic_msix_wq_intr(enic, 0); + unsigned int wq_work_to_do = -1; /* no limit */ + unsigned int wq_work_done; + + wq_work_done = vnic_cq_service(&enic->cq[cq], + wq_work_to_do, enic_wq_service, NULL); + + vnic_intr_return_credits(&enic->intr[intr], + wq_work_done, + 1 /* unmask intr */, + 1 /* reset intr timer */); + + return IRQ_HANDLED; +} + +static irqreturn_t enic_isr_msix_err(int irq, void *data) +{ + struct enic *enic = data; + unsigned int intr = enic_msix_err_intr(enic); + + vnic_intr_return_all_credits(&enic->intr[intr]); + + enic_log_q_error(enic); + + /* schedule recovery from WQ/RQ error */ + schedule_work(&enic->reset); + + return IRQ_HANDLED; +} + +static irqreturn_t enic_isr_msix_notify(int irq, void *data) +{ + struct enic *enic = data; + unsigned int intr = enic_msix_notify_intr(enic); + + vnic_intr_return_all_credits(&enic->intr[intr]); + enic_notify_check(enic); + + return IRQ_HANDLED; +} + +static inline void enic_queue_wq_skb_cont(struct enic *enic, + struct vnic_wq *wq, struct sk_buff *skb, + unsigned int len_left, int loopback) +{ + skb_frag_t *frag; + + /* Queue additional data fragments */ + for (frag = skb_shinfo(skb)->frags; len_left; frag++) { + len_left -= frag->size; + enic_queue_wq_desc_cont(wq, skb, + pci_map_page(enic->pdev, frag->page, + frag->page_offset, frag->size, + PCI_DMA_TODEVICE), + frag->size, + (len_left == 0), /* EOP? */ + loopback); + } +} + +static inline void enic_queue_wq_skb_vlan(struct enic *enic, + struct vnic_wq *wq, struct sk_buff *skb, + int vlan_tag_insert, unsigned int vlan_tag, int loopback) +{ + unsigned int head_len = skb_headlen(skb); + unsigned int len_left = skb->len - head_len; + int eop = (len_left == 0); + + /* Queue the main skb fragment. The fragments are no larger + * than max MTU(9000)+ETH_HDR_LEN(14) bytes, which is less + * than WQ_ENET_MAX_DESC_LEN length. So only one descriptor + * per fragment is queued. + */ + enic_queue_wq_desc(wq, skb, + pci_map_single(enic->pdev, skb->data, + head_len, PCI_DMA_TODEVICE), + head_len, + vlan_tag_insert, vlan_tag, + eop, loopback); + + if (!eop) + enic_queue_wq_skb_cont(enic, wq, skb, len_left, loopback); +} + +static inline void enic_queue_wq_skb_csum_l4(struct enic *enic, + struct vnic_wq *wq, struct sk_buff *skb, + int vlan_tag_insert, unsigned int vlan_tag, int loopback) +{ + unsigned int head_len = skb_headlen(skb); + unsigned int len_left = skb->len - head_len; + unsigned int hdr_len = skb_checksum_start_offset(skb); + unsigned int csum_offset = hdr_len + skb->csum_offset; + int eop = (len_left == 0); + + /* Queue the main skb fragment. The fragments are no larger + * than max MTU(9000)+ETH_HDR_LEN(14) bytes, which is less + * than WQ_ENET_MAX_DESC_LEN length. So only one descriptor + * per fragment is queued. + */ + enic_queue_wq_desc_csum_l4(wq, skb, + pci_map_single(enic->pdev, skb->data, + head_len, PCI_DMA_TODEVICE), + head_len, + csum_offset, + hdr_len, + vlan_tag_insert, vlan_tag, + eop, loopback); + + if (!eop) + enic_queue_wq_skb_cont(enic, wq, skb, len_left, loopback); +} + +static inline void enic_queue_wq_skb_tso(struct enic *enic, + struct vnic_wq *wq, struct sk_buff *skb, unsigned int mss, + int vlan_tag_insert, unsigned int vlan_tag, int loopback) +{ + unsigned int frag_len_left = skb_headlen(skb); + unsigned int len_left = skb->len - frag_len_left; + unsigned int hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); + int eop = (len_left == 0); + unsigned int len; + dma_addr_t dma_addr; + unsigned int offset = 0; + skb_frag_t *frag; + + /* Preload TCP csum field with IP pseudo hdr calculated + * with IP length set to zero. HW will later add in length + * to each TCP segment resulting from the TSO. + */ + + if (skb->protocol == cpu_to_be16(ETH_P_IP)) { + ip_hdr(skb)->check = 0; + tcp_hdr(skb)->check = ~csum_tcpudp_magic(ip_hdr(skb)->saddr, + ip_hdr(skb)->daddr, 0, IPPROTO_TCP, 0); + } else if (skb->protocol == cpu_to_be16(ETH_P_IPV6)) { + tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, + &ipv6_hdr(skb)->daddr, 0, IPPROTO_TCP, 0); + } + + /* Queue WQ_ENET_MAX_DESC_LEN length descriptors + * for the main skb fragment + */ + while (frag_len_left) { + len = min(frag_len_left, (unsigned int)WQ_ENET_MAX_DESC_LEN); + dma_addr = pci_map_single(enic->pdev, skb->data + offset, + len, PCI_DMA_TODEVICE); + enic_queue_wq_desc_tso(wq, skb, + dma_addr, + len, + mss, hdr_len, + vlan_tag_insert, vlan_tag, + eop && (len == frag_len_left), loopback); + frag_len_left -= len; + offset += len; + } + + if (eop) + return; + + /* Queue WQ_ENET_MAX_DESC_LEN length descriptors + * for additional data fragments + */ + for (frag = skb_shinfo(skb)->frags; len_left; frag++) { + len_left -= frag->size; + frag_len_left = frag->size; + offset = frag->page_offset; + + while (frag_len_left) { + len = min(frag_len_left, + (unsigned int)WQ_ENET_MAX_DESC_LEN); + dma_addr = pci_map_page(enic->pdev, frag->page, + offset, len, + PCI_DMA_TODEVICE); + enic_queue_wq_desc_cont(wq, skb, + dma_addr, + len, + (len_left == 0) && + (len == frag_len_left), /* EOP? */ + loopback); + frag_len_left -= len; + offset += len; + } + } +} + +static inline void enic_queue_wq_skb(struct enic *enic, + struct vnic_wq *wq, struct sk_buff *skb) +{ + unsigned int mss = skb_shinfo(skb)->gso_size; + unsigned int vlan_tag = 0; + int vlan_tag_insert = 0; + int loopback = 0; + + if (vlan_tx_tag_present(skb)) { + /* VLAN tag from trunking driver */ + vlan_tag_insert = 1; + vlan_tag = vlan_tx_tag_get(skb); + } else if (enic->loop_enable) { + vlan_tag = enic->loop_tag; + loopback = 1; + } + + if (mss) + enic_queue_wq_skb_tso(enic, wq, skb, mss, + vlan_tag_insert, vlan_tag, loopback); + else if (skb->ip_summed == CHECKSUM_PARTIAL) + enic_queue_wq_skb_csum_l4(enic, wq, skb, + vlan_tag_insert, vlan_tag, loopback); + else + enic_queue_wq_skb_vlan(enic, wq, skb, + vlan_tag_insert, vlan_tag, loopback); +} + +/* netif_tx_lock held, process context with BHs disabled, or BH */ +static netdev_tx_t enic_hard_start_xmit(struct sk_buff *skb, + struct net_device *netdev) +{ + struct enic *enic = netdev_priv(netdev); + struct vnic_wq *wq = &enic->wq[0]; + unsigned long flags; + + if (skb->len <= 0) { + dev_kfree_skb(skb); + return NETDEV_TX_OK; + } + + /* Non-TSO sends must fit within ENIC_NON_TSO_MAX_DESC descs, + * which is very likely. In the off chance it's going to take + * more than * ENIC_NON_TSO_MAX_DESC, linearize the skb. + */ + + if (skb_shinfo(skb)->gso_size == 0 && + skb_shinfo(skb)->nr_frags + 1 > ENIC_NON_TSO_MAX_DESC && + skb_linearize(skb)) { + dev_kfree_skb(skb); + return NETDEV_TX_OK; + } + + spin_lock_irqsave(&enic->wq_lock[0], flags); + + if (vnic_wq_desc_avail(wq) < + skb_shinfo(skb)->nr_frags + ENIC_DESC_MAX_SPLITS) { + netif_stop_queue(netdev); + /* This is a hard error, log it */ + netdev_err(netdev, "BUG! Tx ring full when queue awake!\n"); + spin_unlock_irqrestore(&enic->wq_lock[0], flags); + return NETDEV_TX_BUSY; + } + + enic_queue_wq_skb(enic, wq, skb); + + if (vnic_wq_desc_avail(wq) < MAX_SKB_FRAGS + ENIC_DESC_MAX_SPLITS) + netif_stop_queue(netdev); + + spin_unlock_irqrestore(&enic->wq_lock[0], flags); + + return NETDEV_TX_OK; +} + +/* dev_base_lock rwlock held, nominally process context */ +static struct rtnl_link_stats64 *enic_get_stats(struct net_device *netdev, + struct rtnl_link_stats64 *net_stats) +{ + struct enic *enic = netdev_priv(netdev); + struct vnic_stats *stats; + + enic_dev_stats_dump(enic, &stats); + + net_stats->tx_packets = stats->tx.tx_frames_ok; + net_stats->tx_bytes = stats->tx.tx_bytes_ok; + net_stats->tx_errors = stats->tx.tx_errors; + net_stats->tx_dropped = stats->tx.tx_drops; + + net_stats->rx_packets = stats->rx.rx_frames_ok; + net_stats->rx_bytes = stats->rx.rx_bytes_ok; + net_stats->rx_errors = stats->rx.rx_errors; + net_stats->multicast = stats->rx.rx_multicast_frames_ok; + net_stats->rx_over_errors = enic->rq_truncated_pkts; + net_stats->rx_crc_errors = enic->rq_bad_fcs; + net_stats->rx_dropped = stats->rx.rx_no_bufs + stats->rx.rx_drop; + + return net_stats; +} + +void enic_reset_addr_lists(struct enic *enic) +{ + enic->mc_count = 0; + enic->uc_count = 0; + enic->flags = 0; +} + +static int enic_set_mac_addr(struct net_device *netdev, char *addr) +{ + struct enic *enic = netdev_priv(netdev); + + if (enic_is_dynamic(enic)) { + if (!is_valid_ether_addr(addr) && !is_zero_ether_addr(addr)) + return -EADDRNOTAVAIL; + } else { + if (!is_valid_ether_addr(addr)) + return -EADDRNOTAVAIL; + } + + memcpy(netdev->dev_addr, addr, netdev->addr_len); + + return 0; +} + +static int enic_set_mac_address_dynamic(struct net_device *netdev, void *p) +{ + struct enic *enic = netdev_priv(netdev); + struct sockaddr *saddr = p; + char *addr = saddr->sa_data; + int err; + + if (netif_running(enic->netdev)) { + err = enic_dev_del_station_addr(enic); + if (err) + return err; + } + + err = enic_set_mac_addr(netdev, addr); + if (err) + return err; + + if (netif_running(enic->netdev)) { + err = enic_dev_add_station_addr(enic); + if (err) + return err; + } + + return err; +} + +static int enic_set_mac_address(struct net_device *netdev, void *p) +{ + struct sockaddr *saddr = p; + char *addr = saddr->sa_data; + struct enic *enic = netdev_priv(netdev); + int err; + + err = enic_dev_del_station_addr(enic); + if (err) + return err; + + err = enic_set_mac_addr(netdev, addr); + if (err) + return err; + + return enic_dev_add_station_addr(enic); +} + +static void enic_update_multicast_addr_list(struct enic *enic) +{ + struct net_device *netdev = enic->netdev; + struct netdev_hw_addr *ha; + unsigned int mc_count = netdev_mc_count(netdev); + u8 mc_addr[ENIC_MULTICAST_PERFECT_FILTERS][ETH_ALEN]; + unsigned int i, j; + + if (mc_count > ENIC_MULTICAST_PERFECT_FILTERS) { + netdev_warn(netdev, "Registering only %d out of %d " + "multicast addresses\n", + ENIC_MULTICAST_PERFECT_FILTERS, mc_count); + mc_count = ENIC_MULTICAST_PERFECT_FILTERS; + } + + /* Is there an easier way? Trying to minimize to + * calls to add/del multicast addrs. We keep the + * addrs from the last call in enic->mc_addr and + * look for changes to add/del. + */ + + i = 0; + netdev_for_each_mc_addr(ha, netdev) { + if (i == mc_count) + break; + memcpy(mc_addr[i++], ha->addr, ETH_ALEN); + } + + for (i = 0; i < enic->mc_count; i++) { + for (j = 0; j < mc_count; j++) + if (compare_ether_addr(enic->mc_addr[i], + mc_addr[j]) == 0) + break; + if (j == mc_count) + enic_dev_del_addr(enic, enic->mc_addr[i]); + } + + for (i = 0; i < mc_count; i++) { + for (j = 0; j < enic->mc_count; j++) + if (compare_ether_addr(mc_addr[i], + enic->mc_addr[j]) == 0) + break; + if (j == enic->mc_count) + enic_dev_add_addr(enic, mc_addr[i]); + } + + /* Save the list to compare against next time + */ + + for (i = 0; i < mc_count; i++) + memcpy(enic->mc_addr[i], mc_addr[i], ETH_ALEN); + + enic->mc_count = mc_count; +} + +static void enic_update_unicast_addr_list(struct enic *enic) +{ + struct net_device *netdev = enic->netdev; + struct netdev_hw_addr *ha; + unsigned int uc_count = netdev_uc_count(netdev); + u8 uc_addr[ENIC_UNICAST_PERFECT_FILTERS][ETH_ALEN]; + unsigned int i, j; + + if (uc_count > ENIC_UNICAST_PERFECT_FILTERS) { + netdev_warn(netdev, "Registering only %d out of %d " + "unicast addresses\n", + ENIC_UNICAST_PERFECT_FILTERS, uc_count); + uc_count = ENIC_UNICAST_PERFECT_FILTERS; + } + + /* Is there an easier way? Trying to minimize to + * calls to add/del unicast addrs. We keep the + * addrs from the last call in enic->uc_addr and + * look for changes to add/del. + */ + + i = 0; + netdev_for_each_uc_addr(ha, netdev) { + if (i == uc_count) + break; + memcpy(uc_addr[i++], ha->addr, ETH_ALEN); + } + + for (i = 0; i < enic->uc_count; i++) { + for (j = 0; j < uc_count; j++) + if (compare_ether_addr(enic->uc_addr[i], + uc_addr[j]) == 0) + break; + if (j == uc_count) + enic_dev_del_addr(enic, enic->uc_addr[i]); + } + + for (i = 0; i < uc_count; i++) { + for (j = 0; j < enic->uc_count; j++) + if (compare_ether_addr(uc_addr[i], + enic->uc_addr[j]) == 0) + break; + if (j == enic->uc_count) + enic_dev_add_addr(enic, uc_addr[i]); + } + + /* Save the list to compare against next time + */ + + for (i = 0; i < uc_count; i++) + memcpy(enic->uc_addr[i], uc_addr[i], ETH_ALEN); + + enic->uc_count = uc_count; +} + +/* netif_tx_lock held, BHs disabled */ +static void enic_set_rx_mode(struct net_device *netdev) +{ + struct enic *enic = netdev_priv(netdev); + int directed = 1; + int multicast = (netdev->flags & IFF_MULTICAST) ? 1 : 0; + int broadcast = (netdev->flags & IFF_BROADCAST) ? 1 : 0; + int promisc = (netdev->flags & IFF_PROMISC) || + netdev_uc_count(netdev) > ENIC_UNICAST_PERFECT_FILTERS; + int allmulti = (netdev->flags & IFF_ALLMULTI) || + netdev_mc_count(netdev) > ENIC_MULTICAST_PERFECT_FILTERS; + unsigned int flags = netdev->flags | + (allmulti ? IFF_ALLMULTI : 0) | + (promisc ? IFF_PROMISC : 0); + + if (enic->flags != flags) { + enic->flags = flags; + enic_dev_packet_filter(enic, directed, + multicast, broadcast, promisc, allmulti); + } + + if (!promisc) { + enic_update_unicast_addr_list(enic); + if (!allmulti) + enic_update_multicast_addr_list(enic); + } +} + +/* netif_tx_lock held, BHs disabled */ +static void enic_tx_timeout(struct net_device *netdev) +{ + struct enic *enic = netdev_priv(netdev); + schedule_work(&enic->reset); +} + +static int enic_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) +{ + struct enic *enic = netdev_priv(netdev); + + if (vf != PORT_SELF_VF) + return -EOPNOTSUPP; + + /* Ignore the vf argument for now. We can assume the request + * is coming on a vf. + */ + if (is_valid_ether_addr(mac)) { + memcpy(enic->pp.vf_mac, mac, ETH_ALEN); + return 0; + } else + return -EINVAL; +} + +static int enic_set_vf_port(struct net_device *netdev, int vf, + struct nlattr *port[]) +{ + struct enic *enic = netdev_priv(netdev); + struct enic_port_profile prev_pp; + int err = 0, restore_pp = 1; + + /* don't support VFs, yet */ + if (vf != PORT_SELF_VF) + return -EOPNOTSUPP; + + if (!port[IFLA_PORT_REQUEST]) + return -EOPNOTSUPP; + + memcpy(&prev_pp, &enic->pp, sizeof(enic->pp)); + memset(&enic->pp, 0, sizeof(enic->pp)); + + enic->pp.set |= ENIC_SET_REQUEST; + enic->pp.request = nla_get_u8(port[IFLA_PORT_REQUEST]); + + if (port[IFLA_PORT_PROFILE]) { + enic->pp.set |= ENIC_SET_NAME; + memcpy(enic->pp.name, nla_data(port[IFLA_PORT_PROFILE]), + PORT_PROFILE_MAX); + } + + if (port[IFLA_PORT_INSTANCE_UUID]) { + enic->pp.set |= ENIC_SET_INSTANCE; + memcpy(enic->pp.instance_uuid, + nla_data(port[IFLA_PORT_INSTANCE_UUID]), PORT_UUID_MAX); + } + + if (port[IFLA_PORT_HOST_UUID]) { + enic->pp.set |= ENIC_SET_HOST; + memcpy(enic->pp.host_uuid, + nla_data(port[IFLA_PORT_HOST_UUID]), PORT_UUID_MAX); + } + + /* Special case handling: mac came from IFLA_VF_MAC */ + if (!is_zero_ether_addr(prev_pp.vf_mac)) + memcpy(enic->pp.mac_addr, prev_pp.vf_mac, ETH_ALEN); + + if (is_zero_ether_addr(netdev->dev_addr)) + random_ether_addr(netdev->dev_addr); + + err = enic_process_set_pp_request(enic, &prev_pp, &restore_pp); + if (err) { + if (restore_pp) { + /* Things are still the way they were: Implicit + * DISASSOCIATE failed + */ + memcpy(&enic->pp, &prev_pp, sizeof(enic->pp)); + } else { + memset(&enic->pp, 0, sizeof(enic->pp)); + memset(netdev->dev_addr, 0, ETH_ALEN); + } + } else { + /* Set flag to indicate that the port assoc/disassoc + * request has been sent out to fw + */ + enic->pp.set |= ENIC_PORT_REQUEST_APPLIED; + + /* If DISASSOCIATE, clean up all assigned/saved macaddresses */ + if (enic->pp.request == PORT_REQUEST_DISASSOCIATE) { + memset(enic->pp.mac_addr, 0, ETH_ALEN); + memset(netdev->dev_addr, 0, ETH_ALEN); + } + } + + memset(enic->pp.vf_mac, 0, ETH_ALEN); + + return err; +} + +static int enic_get_vf_port(struct net_device *netdev, int vf, + struct sk_buff *skb) +{ + struct enic *enic = netdev_priv(netdev); + u16 response = PORT_PROFILE_RESPONSE_SUCCESS; + int err; + + if (!(enic->pp.set & ENIC_PORT_REQUEST_APPLIED)) + return -ENODATA; + + err = enic_process_get_pp_request(enic, enic->pp.request, &response); + if (err) + return err; + + NLA_PUT_U16(skb, IFLA_PORT_REQUEST, enic->pp.request); + NLA_PUT_U16(skb, IFLA_PORT_RESPONSE, response); + if (enic->pp.set & ENIC_SET_NAME) + NLA_PUT(skb, IFLA_PORT_PROFILE, PORT_PROFILE_MAX, + enic->pp.name); + if (enic->pp.set & ENIC_SET_INSTANCE) + NLA_PUT(skb, IFLA_PORT_INSTANCE_UUID, PORT_UUID_MAX, + enic->pp.instance_uuid); + if (enic->pp.set & ENIC_SET_HOST) + NLA_PUT(skb, IFLA_PORT_HOST_UUID, PORT_UUID_MAX, + enic->pp.host_uuid); + + return 0; + +nla_put_failure: + return -EMSGSIZE; +} + +static void enic_free_rq_buf(struct vnic_rq *rq, struct vnic_rq_buf *buf) +{ + struct enic *enic = vnic_dev_priv(rq->vdev); + + if (!buf->os_buf) + return; + + pci_unmap_single(enic->pdev, buf->dma_addr, + buf->len, PCI_DMA_FROMDEVICE); + dev_kfree_skb_any(buf->os_buf); +} + +static int enic_rq_alloc_buf(struct vnic_rq *rq) +{ + struct enic *enic = vnic_dev_priv(rq->vdev); + struct net_device *netdev = enic->netdev; + struct sk_buff *skb; + unsigned int len = netdev->mtu + VLAN_ETH_HLEN; + unsigned int os_buf_index = 0; + dma_addr_t dma_addr; + + skb = netdev_alloc_skb_ip_align(netdev, len); + if (!skb) + return -ENOMEM; + + dma_addr = pci_map_single(enic->pdev, skb->data, + len, PCI_DMA_FROMDEVICE); + + enic_queue_rq_desc(rq, skb, os_buf_index, + dma_addr, len); + + return 0; +} + +static void enic_rq_indicate_buf(struct vnic_rq *rq, + struct cq_desc *cq_desc, struct vnic_rq_buf *buf, + int skipped, void *opaque) +{ + struct enic *enic = vnic_dev_priv(rq->vdev); + struct net_device *netdev = enic->netdev; + struct sk_buff *skb; + + u8 type, color, eop, sop, ingress_port, vlan_stripped; + u8 fcoe, fcoe_sof, fcoe_fc_crc_ok, fcoe_enc_error, fcoe_eof; + u8 tcp_udp_csum_ok, udp, tcp, ipv4_csum_ok; + u8 ipv6, ipv4, ipv4_fragment, fcs_ok, rss_type, csum_not_calc; + u8 packet_error; + u16 q_number, completed_index, bytes_written, vlan_tci, checksum; + u32 rss_hash; + + if (skipped) + return; + + skb = buf->os_buf; + prefetch(skb->data - NET_IP_ALIGN); + pci_unmap_single(enic->pdev, buf->dma_addr, + buf->len, PCI_DMA_FROMDEVICE); + + cq_enet_rq_desc_dec((struct cq_enet_rq_desc *)cq_desc, + &type, &color, &q_number, &completed_index, + &ingress_port, &fcoe, &eop, &sop, &rss_type, + &csum_not_calc, &rss_hash, &bytes_written, + &packet_error, &vlan_stripped, &vlan_tci, &checksum, + &fcoe_sof, &fcoe_fc_crc_ok, &fcoe_enc_error, + &fcoe_eof, &tcp_udp_csum_ok, &udp, &tcp, + &ipv4_csum_ok, &ipv6, &ipv4, &ipv4_fragment, + &fcs_ok); + + if (packet_error) { + + if (!fcs_ok) { + if (bytes_written > 0) + enic->rq_bad_fcs++; + else if (bytes_written == 0) + enic->rq_truncated_pkts++; + } + + dev_kfree_skb_any(skb); + + return; + } + + if (eop && bytes_written > 0) { + + /* Good receive + */ + + skb_put(skb, bytes_written); + skb->protocol = eth_type_trans(skb, netdev); + + if ((netdev->features & NETIF_F_RXCSUM) && !csum_not_calc) { + skb->csum = htons(checksum); + skb->ip_summed = CHECKSUM_COMPLETE; + } + + skb->dev = netdev; + + if (vlan_stripped) + __vlan_hwaccel_put_tag(skb, vlan_tci); + + if (netdev->features & NETIF_F_GRO) + napi_gro_receive(&enic->napi[q_number], skb); + else + netif_receive_skb(skb); + } else { + + /* Buffer overflow + */ + + dev_kfree_skb_any(skb); + } +} + +static int enic_rq_service(struct vnic_dev *vdev, struct cq_desc *cq_desc, + u8 type, u16 q_number, u16 completed_index, void *opaque) +{ + struct enic *enic = vnic_dev_priv(vdev); + + vnic_rq_service(&enic->rq[q_number], cq_desc, + completed_index, VNIC_RQ_RETURN_DESC, + enic_rq_indicate_buf, opaque); + + return 0; +} + +static int enic_poll(struct napi_struct *napi, int budget) +{ + struct net_device *netdev = napi->dev; + struct enic *enic = netdev_priv(netdev); + unsigned int cq_rq = enic_cq_rq(enic, 0); + unsigned int cq_wq = enic_cq_wq(enic, 0); + unsigned int intr = enic_legacy_io_intr(); + unsigned int rq_work_to_do = budget; + unsigned int wq_work_to_do = -1; /* no limit */ + unsigned int work_done, rq_work_done, wq_work_done; + int err; + + /* Service RQ (first) and WQ + */ + + rq_work_done = vnic_cq_service(&enic->cq[cq_rq], + rq_work_to_do, enic_rq_service, NULL); + + wq_work_done = vnic_cq_service(&enic->cq[cq_wq], + wq_work_to_do, enic_wq_service, NULL); + + /* Accumulate intr event credits for this polling + * cycle. An intr event is the completion of a + * a WQ or RQ packet. + */ + + work_done = rq_work_done + wq_work_done; + + if (work_done > 0) + vnic_intr_return_credits(&enic->intr[intr], + work_done, + 0 /* don't unmask intr */, + 0 /* don't reset intr timer */); + + err = vnic_rq_fill(&enic->rq[0], enic_rq_alloc_buf); + + /* Buffer allocation failed. Stay in polling + * mode so we can try to fill the ring again. + */ + + if (err) + rq_work_done = rq_work_to_do; + + if (rq_work_done < rq_work_to_do) { + + /* Some work done, but not enough to stay in polling, + * exit polling + */ + + napi_complete(napi); + vnic_intr_unmask(&enic->intr[intr]); + } + + return rq_work_done; +} + +static int enic_poll_msix(struct napi_struct *napi, int budget) +{ + struct net_device *netdev = napi->dev; + struct enic *enic = netdev_priv(netdev); + unsigned int rq = (napi - &enic->napi[0]); + unsigned int cq = enic_cq_rq(enic, rq); + unsigned int intr = enic_msix_rq_intr(enic, rq); + unsigned int work_to_do = budget; + unsigned int work_done; + int err; + + /* Service RQ + */ + + work_done = vnic_cq_service(&enic->cq[cq], + work_to_do, enic_rq_service, NULL); + + /* Return intr event credits for this polling + * cycle. An intr event is the completion of a + * RQ packet. + */ + + if (work_done > 0) + vnic_intr_return_credits(&enic->intr[intr], + work_done, + 0 /* don't unmask intr */, + 0 /* don't reset intr timer */); + + err = vnic_rq_fill(&enic->rq[rq], enic_rq_alloc_buf); + + /* Buffer allocation failed. Stay in polling mode + * so we can try to fill the ring again. + */ + + if (err) + work_done = work_to_do; + + if (work_done < work_to_do) { + + /* Some work done, but not enough to stay in polling, + * exit polling + */ + + napi_complete(napi); + vnic_intr_unmask(&enic->intr[intr]); + } + + return work_done; +} + +static void enic_notify_timer(unsigned long data) +{ + struct enic *enic = (struct enic *)data; + + enic_notify_check(enic); + + mod_timer(&enic->notify_timer, + round_jiffies(jiffies + ENIC_NOTIFY_TIMER_PERIOD)); +} + +static void enic_free_intr(struct enic *enic) +{ + struct net_device *netdev = enic->netdev; + unsigned int i; + + switch (vnic_dev_get_intr_mode(enic->vdev)) { + case VNIC_DEV_INTR_MODE_INTX: + free_irq(enic->pdev->irq, netdev); + break; + case VNIC_DEV_INTR_MODE_MSI: + free_irq(enic->pdev->irq, enic); + break; + case VNIC_DEV_INTR_MODE_MSIX: + for (i = 0; i < ARRAY_SIZE(enic->msix); i++) + if (enic->msix[i].requested) + free_irq(enic->msix_entry[i].vector, + enic->msix[i].devid); + break; + default: + break; + } +} + +static int enic_request_intr(struct enic *enic) +{ + struct net_device *netdev = enic->netdev; + unsigned int i, intr; + int err = 0; + + switch (vnic_dev_get_intr_mode(enic->vdev)) { + + case VNIC_DEV_INTR_MODE_INTX: + + err = request_irq(enic->pdev->irq, enic_isr_legacy, + IRQF_SHARED, netdev->name, netdev); + break; + + case VNIC_DEV_INTR_MODE_MSI: + + err = request_irq(enic->pdev->irq, enic_isr_msi, + 0, netdev->name, enic); + break; + + case VNIC_DEV_INTR_MODE_MSIX: + + for (i = 0; i < enic->rq_count; i++) { + intr = enic_msix_rq_intr(enic, i); + sprintf(enic->msix[intr].devname, + "%.11s-rx-%d", netdev->name, i); + enic->msix[intr].isr = enic_isr_msix_rq; + enic->msix[intr].devid = &enic->napi[i]; + } + + for (i = 0; i < enic->wq_count; i++) { + intr = enic_msix_wq_intr(enic, i); + sprintf(enic->msix[intr].devname, + "%.11s-tx-%d", netdev->name, i); + enic->msix[intr].isr = enic_isr_msix_wq; + enic->msix[intr].devid = enic; + } + + intr = enic_msix_err_intr(enic); + sprintf(enic->msix[intr].devname, + "%.11s-err", netdev->name); + enic->msix[intr].isr = enic_isr_msix_err; + enic->msix[intr].devid = enic; + + intr = enic_msix_notify_intr(enic); + sprintf(enic->msix[intr].devname, + "%.11s-notify", netdev->name); + enic->msix[intr].isr = enic_isr_msix_notify; + enic->msix[intr].devid = enic; + + for (i = 0; i < ARRAY_SIZE(enic->msix); i++) + enic->msix[i].requested = 0; + + for (i = 0; i < enic->intr_count; i++) { + err = request_irq(enic->msix_entry[i].vector, + enic->msix[i].isr, 0, + enic->msix[i].devname, + enic->msix[i].devid); + if (err) { + enic_free_intr(enic); + break; + } + enic->msix[i].requested = 1; + } + + break; + + default: + break; + } + + return err; +} + +static void enic_synchronize_irqs(struct enic *enic) +{ + unsigned int i; + + switch (vnic_dev_get_intr_mode(enic->vdev)) { + case VNIC_DEV_INTR_MODE_INTX: + case VNIC_DEV_INTR_MODE_MSI: + synchronize_irq(enic->pdev->irq); + break; + case VNIC_DEV_INTR_MODE_MSIX: + for (i = 0; i < enic->intr_count; i++) + synchronize_irq(enic->msix_entry[i].vector); + break; + default: + break; + } +} + +static int enic_dev_notify_set(struct enic *enic) +{ + int err; + + spin_lock(&enic->devcmd_lock); + switch (vnic_dev_get_intr_mode(enic->vdev)) { + case VNIC_DEV_INTR_MODE_INTX: + err = vnic_dev_notify_set(enic->vdev, + enic_legacy_notify_intr()); + break; + case VNIC_DEV_INTR_MODE_MSIX: + err = vnic_dev_notify_set(enic->vdev, + enic_msix_notify_intr(enic)); + break; + default: + err = vnic_dev_notify_set(enic->vdev, -1 /* no intr */); + break; + } + spin_unlock(&enic->devcmd_lock); + + return err; +} + +static void enic_notify_timer_start(struct enic *enic) +{ + switch (vnic_dev_get_intr_mode(enic->vdev)) { + case VNIC_DEV_INTR_MODE_MSI: + mod_timer(&enic->notify_timer, jiffies); + break; + default: + /* Using intr for notification for INTx/MSI-X */ + break; + } +} + +/* rtnl lock is held, process context */ +static int enic_open(struct net_device *netdev) +{ + struct enic *enic = netdev_priv(netdev); + unsigned int i; + int err; + + err = enic_request_intr(enic); + if (err) { + netdev_err(netdev, "Unable to request irq.\n"); + return err; + } + + err = enic_dev_notify_set(enic); + if (err) { + netdev_err(netdev, + "Failed to alloc notify buffer, aborting.\n"); + goto err_out_free_intr; + } + + for (i = 0; i < enic->rq_count; i++) { + vnic_rq_fill(&enic->rq[i], enic_rq_alloc_buf); + /* Need at least one buffer on ring to get going */ + if (vnic_rq_desc_used(&enic->rq[i]) == 0) { + netdev_err(netdev, "Unable to alloc receive buffers\n"); + err = -ENOMEM; + goto err_out_notify_unset; + } + } + + for (i = 0; i < enic->wq_count; i++) + vnic_wq_enable(&enic->wq[i]); + for (i = 0; i < enic->rq_count; i++) + vnic_rq_enable(&enic->rq[i]); + + if (enic_is_dynamic(enic) && !is_zero_ether_addr(enic->pp.mac_addr)) + enic_dev_add_addr(enic, enic->pp.mac_addr); + else + enic_dev_add_station_addr(enic); + enic_set_rx_mode(netdev); + + netif_wake_queue(netdev); + + for (i = 0; i < enic->rq_count; i++) + napi_enable(&enic->napi[i]); + + enic_dev_enable(enic); + + for (i = 0; i < enic->intr_count; i++) + vnic_intr_unmask(&enic->intr[i]); + + enic_notify_timer_start(enic); + + return 0; + +err_out_notify_unset: + enic_dev_notify_unset(enic); +err_out_free_intr: + enic_free_intr(enic); + + return err; +} + +/* rtnl lock is held, process context */ +static int enic_stop(struct net_device *netdev) +{ + struct enic *enic = netdev_priv(netdev); + unsigned int i; + int err; + + for (i = 0; i < enic->intr_count; i++) { + vnic_intr_mask(&enic->intr[i]); + (void)vnic_intr_masked(&enic->intr[i]); /* flush write */ + } + + enic_synchronize_irqs(enic); + + del_timer_sync(&enic->notify_timer); + + enic_dev_disable(enic); + + for (i = 0; i < enic->rq_count; i++) + napi_disable(&enic->napi[i]); + + netif_carrier_off(netdev); + netif_tx_disable(netdev); + if (enic_is_dynamic(enic) && !is_zero_ether_addr(enic->pp.mac_addr)) + enic_dev_del_addr(enic, enic->pp.mac_addr); + else + enic_dev_del_station_addr(enic); + + for (i = 0; i < enic->wq_count; i++) { + err = vnic_wq_disable(&enic->wq[i]); + if (err) + return err; + } + for (i = 0; i < enic->rq_count; i++) { + err = vnic_rq_disable(&enic->rq[i]); + if (err) + return err; + } + + enic_dev_notify_unset(enic); + enic_free_intr(enic); + + for (i = 0; i < enic->wq_count; i++) + vnic_wq_clean(&enic->wq[i], enic_free_wq_buf); + for (i = 0; i < enic->rq_count; i++) + vnic_rq_clean(&enic->rq[i], enic_free_rq_buf); + for (i = 0; i < enic->cq_count; i++) + vnic_cq_clean(&enic->cq[i]); + for (i = 0; i < enic->intr_count; i++) + vnic_intr_clean(&enic->intr[i]); + + return 0; +} + +static int enic_change_mtu(struct net_device *netdev, int new_mtu) +{ + struct enic *enic = netdev_priv(netdev); + int running = netif_running(netdev); + + if (new_mtu < ENIC_MIN_MTU || new_mtu > ENIC_MAX_MTU) + return -EINVAL; + + if (enic_is_dynamic(enic)) + return -EOPNOTSUPP; + + if (running) + enic_stop(netdev); + + netdev->mtu = new_mtu; + + if (netdev->mtu > enic->port_mtu) + netdev_warn(netdev, + "interface MTU (%d) set higher than port MTU (%d)\n", + netdev->mtu, enic->port_mtu); + + if (running) + enic_open(netdev); + + return 0; +} + +static void enic_change_mtu_work(struct work_struct *work) +{ + struct enic *enic = container_of(work, struct enic, change_mtu_work); + struct net_device *netdev = enic->netdev; + int new_mtu = vnic_dev_mtu(enic->vdev); + int err; + unsigned int i; + + new_mtu = max_t(int, ENIC_MIN_MTU, min_t(int, ENIC_MAX_MTU, new_mtu)); + + rtnl_lock(); + + /* Stop RQ */ + del_timer_sync(&enic->notify_timer); + + for (i = 0; i < enic->rq_count; i++) + napi_disable(&enic->napi[i]); + + vnic_intr_mask(&enic->intr[0]); + enic_synchronize_irqs(enic); + err = vnic_rq_disable(&enic->rq[0]); + if (err) { + netdev_err(netdev, "Unable to disable RQ.\n"); + return; + } + vnic_rq_clean(&enic->rq[0], enic_free_rq_buf); + vnic_cq_clean(&enic->cq[0]); + vnic_intr_clean(&enic->intr[0]); + + /* Fill RQ with new_mtu-sized buffers */ + netdev->mtu = new_mtu; + vnic_rq_fill(&enic->rq[0], enic_rq_alloc_buf); + /* Need at least one buffer on ring to get going */ + if (vnic_rq_desc_used(&enic->rq[0]) == 0) { + netdev_err(netdev, "Unable to alloc receive buffers.\n"); + return; + } + + /* Start RQ */ + vnic_rq_enable(&enic->rq[0]); + napi_enable(&enic->napi[0]); + vnic_intr_unmask(&enic->intr[0]); + enic_notify_timer_start(enic); + + rtnl_unlock(); + + netdev_info(netdev, "interface MTU set as %d\n", netdev->mtu); +} + +#ifdef CONFIG_NET_POLL_CONTROLLER +static void enic_poll_controller(struct net_device *netdev) +{ + struct enic *enic = netdev_priv(netdev); + struct vnic_dev *vdev = enic->vdev; + unsigned int i, intr; + + switch (vnic_dev_get_intr_mode(vdev)) { + case VNIC_DEV_INTR_MODE_MSIX: + for (i = 0; i < enic->rq_count; i++) { + intr = enic_msix_rq_intr(enic, i); + enic_isr_msix_rq(enic->msix_entry[intr].vector, + &enic->napi[i]); + } + + for (i = 0; i < enic->wq_count; i++) { + intr = enic_msix_wq_intr(enic, i); + enic_isr_msix_wq(enic->msix_entry[intr].vector, enic); + } + + break; + case VNIC_DEV_INTR_MODE_MSI: + enic_isr_msi(enic->pdev->irq, enic); + break; + case VNIC_DEV_INTR_MODE_INTX: + enic_isr_legacy(enic->pdev->irq, netdev); + break; + default: + break; + } +} +#endif + +static int enic_dev_wait(struct vnic_dev *vdev, + int (*start)(struct vnic_dev *, int), + int (*finished)(struct vnic_dev *, int *), + int arg) +{ + unsigned long time; + int done; + int err; + + BUG_ON(in_interrupt()); + + err = start(vdev, arg); + if (err) + return err; + + /* Wait for func to complete...2 seconds max + */ + + time = jiffies + (HZ * 2); + do { + + err = finished(vdev, &done); + if (err) + return err; + + if (done) + return 0; + + schedule_timeout_uninterruptible(HZ / 10); + + } while (time_after(time, jiffies)); + + return -ETIMEDOUT; +} + +static int enic_dev_open(struct enic *enic) +{ + int err; + + err = enic_dev_wait(enic->vdev, vnic_dev_open, + vnic_dev_open_done, 0); + if (err) + dev_err(enic_get_dev(enic), "vNIC device open failed, err %d\n", + err); + + return err; +} + +static int enic_dev_hang_reset(struct enic *enic) +{ + int err; + + err = enic_dev_wait(enic->vdev, vnic_dev_hang_reset, + vnic_dev_hang_reset_done, 0); + if (err) + netdev_err(enic->netdev, "vNIC hang reset failed, err %d\n", + err); + + return err; +} + +static int enic_set_rsskey(struct enic *enic) +{ + dma_addr_t rss_key_buf_pa; + union vnic_rss_key *rss_key_buf_va = NULL; + union vnic_rss_key rss_key = { + .key[0].b = {85, 67, 83, 97, 119, 101, 115, 111, 109, 101}, + .key[1].b = {80, 65, 76, 79, 117, 110, 105, 113, 117, 101}, + .key[2].b = {76, 73, 78, 85, 88, 114, 111, 99, 107, 115}, + .key[3].b = {69, 78, 73, 67, 105, 115, 99, 111, 111, 108}, + }; + int err; + + rss_key_buf_va = pci_alloc_consistent(enic->pdev, + sizeof(union vnic_rss_key), &rss_key_buf_pa); + if (!rss_key_buf_va) + return -ENOMEM; + + memcpy(rss_key_buf_va, &rss_key, sizeof(union vnic_rss_key)); + + spin_lock(&enic->devcmd_lock); + err = enic_set_rss_key(enic, + rss_key_buf_pa, + sizeof(union vnic_rss_key)); + spin_unlock(&enic->devcmd_lock); + + pci_free_consistent(enic->pdev, sizeof(union vnic_rss_key), + rss_key_buf_va, rss_key_buf_pa); + + return err; +} + +static int enic_set_rsscpu(struct enic *enic, u8 rss_hash_bits) +{ + dma_addr_t rss_cpu_buf_pa; + union vnic_rss_cpu *rss_cpu_buf_va = NULL; + unsigned int i; + int err; + + rss_cpu_buf_va = pci_alloc_consistent(enic->pdev, + sizeof(union vnic_rss_cpu), &rss_cpu_buf_pa); + if (!rss_cpu_buf_va) + return -ENOMEM; + + for (i = 0; i < (1 << rss_hash_bits); i++) + (*rss_cpu_buf_va).cpu[i/4].b[i%4] = i % enic->rq_count; + + spin_lock(&enic->devcmd_lock); + err = enic_set_rss_cpu(enic, + rss_cpu_buf_pa, + sizeof(union vnic_rss_cpu)); + spin_unlock(&enic->devcmd_lock); + + pci_free_consistent(enic->pdev, sizeof(union vnic_rss_cpu), + rss_cpu_buf_va, rss_cpu_buf_pa); + + return err; +} + +static int enic_set_niccfg(struct enic *enic, u8 rss_default_cpu, + u8 rss_hash_type, u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable) +{ + const u8 tso_ipid_split_en = 0; + const u8 ig_vlan_strip_en = 1; + int err; + + /* Enable VLAN tag stripping. + */ + + spin_lock(&enic->devcmd_lock); + err = enic_set_nic_cfg(enic, + rss_default_cpu, rss_hash_type, + rss_hash_bits, rss_base_cpu, + rss_enable, tso_ipid_split_en, + ig_vlan_strip_en); + spin_unlock(&enic->devcmd_lock); + + return err; +} + +static int enic_set_rss_nic_cfg(struct enic *enic) +{ + struct device *dev = enic_get_dev(enic); + const u8 rss_default_cpu = 0; + const u8 rss_hash_type = NIC_CFG_RSS_HASH_TYPE_IPV4 | + NIC_CFG_RSS_HASH_TYPE_TCP_IPV4 | + NIC_CFG_RSS_HASH_TYPE_IPV6 | + NIC_CFG_RSS_HASH_TYPE_TCP_IPV6; + const u8 rss_hash_bits = 7; + const u8 rss_base_cpu = 0; + u8 rss_enable = ENIC_SETTING(enic, RSS) && (enic->rq_count > 1); + + if (rss_enable) { + if (!enic_set_rsskey(enic)) { + if (enic_set_rsscpu(enic, rss_hash_bits)) { + rss_enable = 0; + dev_warn(dev, "RSS disabled, " + "Failed to set RSS cpu indirection table."); + } + } else { + rss_enable = 0; + dev_warn(dev, "RSS disabled, Failed to set RSS key.\n"); + } + } + + return enic_set_niccfg(enic, rss_default_cpu, rss_hash_type, + rss_hash_bits, rss_base_cpu, rss_enable); +} + +static void enic_reset(struct work_struct *work) +{ + struct enic *enic = container_of(work, struct enic, reset); + + if (!netif_running(enic->netdev)) + return; + + rtnl_lock(); + + enic_dev_hang_notify(enic); + enic_stop(enic->netdev); + enic_dev_hang_reset(enic); + enic_reset_addr_lists(enic); + enic_init_vnic_resources(enic); + enic_set_rss_nic_cfg(enic); + enic_dev_set_ig_vlan_rewrite_mode(enic); + enic_open(enic->netdev); + + rtnl_unlock(); +} + +static int enic_set_intr_mode(struct enic *enic) +{ + unsigned int n = min_t(unsigned int, enic->rq_count, ENIC_RQ_MAX); + unsigned int m = min_t(unsigned int, enic->wq_count, ENIC_WQ_MAX); + unsigned int i; + + /* Set interrupt mode (INTx, MSI, MSI-X) depending + * on system capabilities. + * + * Try MSI-X first + * + * We need n RQs, m WQs, n+m CQs, and n+m+2 INTRs + * (the second to last INTR is used for WQ/RQ errors) + * (the last INTR is used for notifications) + */ + + BUG_ON(ARRAY_SIZE(enic->msix_entry) < n + m + 2); + for (i = 0; i < n + m + 2; i++) + enic->msix_entry[i].entry = i; + + /* Use multiple RQs if RSS is enabled + */ + + if (ENIC_SETTING(enic, RSS) && + enic->config.intr_mode < 1 && + enic->rq_count >= n && + enic->wq_count >= m && + enic->cq_count >= n + m && + enic->intr_count >= n + m + 2) { + + if (!pci_enable_msix(enic->pdev, enic->msix_entry, n + m + 2)) { + + enic->rq_count = n; + enic->wq_count = m; + enic->cq_count = n + m; + enic->intr_count = n + m + 2; + + vnic_dev_set_intr_mode(enic->vdev, + VNIC_DEV_INTR_MODE_MSIX); + + return 0; + } + } + + if (enic->config.intr_mode < 1 && + enic->rq_count >= 1 && + enic->wq_count >= m && + enic->cq_count >= 1 + m && + enic->intr_count >= 1 + m + 2) { + if (!pci_enable_msix(enic->pdev, enic->msix_entry, 1 + m + 2)) { + + enic->rq_count = 1; + enic->wq_count = m; + enic->cq_count = 1 + m; + enic->intr_count = 1 + m + 2; + + vnic_dev_set_intr_mode(enic->vdev, + VNIC_DEV_INTR_MODE_MSIX); + + return 0; + } + } + + /* Next try MSI + * + * We need 1 RQ, 1 WQ, 2 CQs, and 1 INTR + */ + + if (enic->config.intr_mode < 2 && + enic->rq_count >= 1 && + enic->wq_count >= 1 && + enic->cq_count >= 2 && + enic->intr_count >= 1 && + !pci_enable_msi(enic->pdev)) { + + enic->rq_count = 1; + enic->wq_count = 1; + enic->cq_count = 2; + enic->intr_count = 1; + + vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_MSI); + + return 0; + } + + /* Next try INTx + * + * We need 1 RQ, 1 WQ, 2 CQs, and 3 INTRs + * (the first INTR is used for WQ/RQ) + * (the second INTR is used for WQ/RQ errors) + * (the last INTR is used for notifications) + */ + + if (enic->config.intr_mode < 3 && + enic->rq_count >= 1 && + enic->wq_count >= 1 && + enic->cq_count >= 2 && + enic->intr_count >= 3) { + + enic->rq_count = 1; + enic->wq_count = 1; + enic->cq_count = 2; + enic->intr_count = 3; + + vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_INTX); + + return 0; + } + + vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_UNKNOWN); + + return -EINVAL; +} + +static void enic_clear_intr_mode(struct enic *enic) +{ + switch (vnic_dev_get_intr_mode(enic->vdev)) { + case VNIC_DEV_INTR_MODE_MSIX: + pci_disable_msix(enic->pdev); + break; + case VNIC_DEV_INTR_MODE_MSI: + pci_disable_msi(enic->pdev); + break; + default: + break; + } + + vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_UNKNOWN); +} + +static const struct net_device_ops enic_netdev_dynamic_ops = { + .ndo_open = enic_open, + .ndo_stop = enic_stop, + .ndo_start_xmit = enic_hard_start_xmit, + .ndo_get_stats64 = enic_get_stats, + .ndo_validate_addr = eth_validate_addr, + .ndo_set_rx_mode = enic_set_rx_mode, + .ndo_set_multicast_list = enic_set_rx_mode, + .ndo_set_mac_address = enic_set_mac_address_dynamic, + .ndo_change_mtu = enic_change_mtu, + .ndo_vlan_rx_add_vid = enic_vlan_rx_add_vid, + .ndo_vlan_rx_kill_vid = enic_vlan_rx_kill_vid, + .ndo_tx_timeout = enic_tx_timeout, + .ndo_set_vf_port = enic_set_vf_port, + .ndo_get_vf_port = enic_get_vf_port, + .ndo_set_vf_mac = enic_set_vf_mac, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = enic_poll_controller, +#endif +}; + +static const struct net_device_ops enic_netdev_ops = { + .ndo_open = enic_open, + .ndo_stop = enic_stop, + .ndo_start_xmit = enic_hard_start_xmit, + .ndo_get_stats64 = enic_get_stats, + .ndo_validate_addr = eth_validate_addr, + .ndo_set_mac_address = enic_set_mac_address, + .ndo_set_rx_mode = enic_set_rx_mode, + .ndo_set_multicast_list = enic_set_rx_mode, + .ndo_change_mtu = enic_change_mtu, + .ndo_vlan_rx_add_vid = enic_vlan_rx_add_vid, + .ndo_vlan_rx_kill_vid = enic_vlan_rx_kill_vid, + .ndo_tx_timeout = enic_tx_timeout, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = enic_poll_controller, +#endif +}; + +static void enic_dev_deinit(struct enic *enic) +{ + unsigned int i; + + for (i = 0; i < enic->rq_count; i++) + netif_napi_del(&enic->napi[i]); + + enic_free_vnic_resources(enic); + enic_clear_intr_mode(enic); +} + +static int enic_dev_init(struct enic *enic) +{ + struct device *dev = enic_get_dev(enic); + struct net_device *netdev = enic->netdev; + unsigned int i; + int err; + + /* Get interrupt coalesce timer info */ + err = enic_dev_intr_coal_timer_info(enic); + if (err) { + dev_warn(dev, "Using default conversion factor for " + "interrupt coalesce timer\n"); + vnic_dev_intr_coal_timer_info_default(enic->vdev); + } + + /* Get vNIC configuration + */ + + err = enic_get_vnic_config(enic); + if (err) { + dev_err(dev, "Get vNIC configuration failed, aborting\n"); + return err; + } + + /* Get available resource counts + */ + + enic_get_res_counts(enic); + + /* Set interrupt mode based on resource counts and system + * capabilities + */ + + err = enic_set_intr_mode(enic); + if (err) { + dev_err(dev, "Failed to set intr mode based on resource " + "counts and system capabilities, aborting\n"); + return err; + } + + /* Allocate and configure vNIC resources + */ + + err = enic_alloc_vnic_resources(enic); + if (err) { + dev_err(dev, "Failed to alloc vNIC resources, aborting\n"); + goto err_out_free_vnic_resources; + } + + enic_init_vnic_resources(enic); + + err = enic_set_rss_nic_cfg(enic); + if (err) { + dev_err(dev, "Failed to config nic, aborting\n"); + goto err_out_free_vnic_resources; + } + + switch (vnic_dev_get_intr_mode(enic->vdev)) { + default: + netif_napi_add(netdev, &enic->napi[0], enic_poll, 64); + break; + case VNIC_DEV_INTR_MODE_MSIX: + for (i = 0; i < enic->rq_count; i++) + netif_napi_add(netdev, &enic->napi[i], + enic_poll_msix, 64); + break; + } + + return 0; + +err_out_free_vnic_resources: + enic_clear_intr_mode(enic); + enic_free_vnic_resources(enic); + + return err; +} + +static void enic_iounmap(struct enic *enic) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(enic->bar); i++) + if (enic->bar[i].vaddr) + iounmap(enic->bar[i].vaddr); +} + +static int __devinit enic_probe(struct pci_dev *pdev, + const struct pci_device_id *ent) +{ + struct device *dev = &pdev->dev; + struct net_device *netdev; + struct enic *enic; + int using_dac = 0; + unsigned int i; + int err; + + /* Allocate net device structure and initialize. Private + * instance data is initialized to zero. + */ + + netdev = alloc_etherdev(sizeof(struct enic)); + if (!netdev) { + pr_err("Etherdev alloc failed, aborting\n"); + return -ENOMEM; + } + + pci_set_drvdata(pdev, netdev); + + SET_NETDEV_DEV(netdev, &pdev->dev); + + enic = netdev_priv(netdev); + enic->netdev = netdev; + enic->pdev = pdev; + + /* Setup PCI resources + */ + + err = pci_enable_device_mem(pdev); + if (err) { + dev_err(dev, "Cannot enable PCI device, aborting\n"); + goto err_out_free_netdev; + } + + err = pci_request_regions(pdev, DRV_NAME); + if (err) { + dev_err(dev, "Cannot request PCI regions, aborting\n"); + goto err_out_disable_device; + } + + pci_set_master(pdev); + + /* Query PCI controller on system for DMA addressing + * limitation for the device. Try 40-bit first, and + * fail to 32-bit. + */ + + err = pci_set_dma_mask(pdev, DMA_BIT_MASK(40)); + if (err) { + err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); + if (err) { + dev_err(dev, "No usable DMA configuration, aborting\n"); + goto err_out_release_regions; + } + err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); + if (err) { + dev_err(dev, "Unable to obtain %u-bit DMA " + "for consistent allocations, aborting\n", 32); + goto err_out_release_regions; + } + } else { + err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40)); + if (err) { + dev_err(dev, "Unable to obtain %u-bit DMA " + "for consistent allocations, aborting\n", 40); + goto err_out_release_regions; + } + using_dac = 1; + } + + /* Map vNIC resources from BAR0-5 + */ + + for (i = 0; i < ARRAY_SIZE(enic->bar); i++) { + if (!(pci_resource_flags(pdev, i) & IORESOURCE_MEM)) + continue; + enic->bar[i].len = pci_resource_len(pdev, i); + enic->bar[i].vaddr = pci_iomap(pdev, i, enic->bar[i].len); + if (!enic->bar[i].vaddr) { + dev_err(dev, "Cannot memory-map BAR %d, aborting\n", i); + err = -ENODEV; + goto err_out_iounmap; + } + enic->bar[i].bus_addr = pci_resource_start(pdev, i); + } + + /* Register vNIC device + */ + + enic->vdev = vnic_dev_register(NULL, enic, pdev, enic->bar, + ARRAY_SIZE(enic->bar)); + if (!enic->vdev) { + dev_err(dev, "vNIC registration failed, aborting\n"); + err = -ENODEV; + goto err_out_iounmap; + } + + /* Issue device open to get device in known state + */ + + err = enic_dev_open(enic); + if (err) { + dev_err(dev, "vNIC dev open failed, aborting\n"); + goto err_out_vnic_unregister; + } + + /* Setup devcmd lock + */ + + spin_lock_init(&enic->devcmd_lock); + + /* + * Set ingress vlan rewrite mode before vnic initialization + */ + + err = enic_dev_set_ig_vlan_rewrite_mode(enic); + if (err) { + dev_err(dev, + "Failed to set ingress vlan rewrite mode, aborting.\n"); + goto err_out_dev_close; + } + + /* Issue device init to initialize the vnic-to-switch link. + * We'll start with carrier off and wait for link UP + * notification later to turn on carrier. We don't need + * to wait here for the vnic-to-switch link initialization + * to complete; link UP notification is the indication that + * the process is complete. + */ + + netif_carrier_off(netdev); + + /* Do not call dev_init for a dynamic vnic. + * For a dynamic vnic, init_prov_info will be + * called later by an upper layer. + */ + + if (!enic_is_dynamic(enic)) { + err = vnic_dev_init(enic->vdev, 0); + if (err) { + dev_err(dev, "vNIC dev init failed, aborting\n"); + goto err_out_dev_close; + } + } + + err = enic_dev_init(enic); + if (err) { + dev_err(dev, "Device initialization failed, aborting\n"); + goto err_out_dev_close; + } + + /* Setup notification timer, HW reset task, and wq locks + */ + + init_timer(&enic->notify_timer); + enic->notify_timer.function = enic_notify_timer; + enic->notify_timer.data = (unsigned long)enic; + + INIT_WORK(&enic->reset, enic_reset); + INIT_WORK(&enic->change_mtu_work, enic_change_mtu_work); + + for (i = 0; i < enic->wq_count; i++) + spin_lock_init(&enic->wq_lock[i]); + + /* Register net device + */ + + enic->port_mtu = enic->config.mtu; + (void)enic_change_mtu(netdev, enic->port_mtu); + + err = enic_set_mac_addr(netdev, enic->mac_addr); + if (err) { + dev_err(dev, "Invalid MAC address, aborting\n"); + goto err_out_dev_deinit; + } + + enic->tx_coalesce_usecs = enic->config.intr_timer_usec; + enic->rx_coalesce_usecs = enic->tx_coalesce_usecs; + + if (enic_is_dynamic(enic)) + netdev->netdev_ops = &enic_netdev_dynamic_ops; + else + netdev->netdev_ops = &enic_netdev_ops; + + netdev->watchdog_timeo = 2 * HZ; + netdev->ethtool_ops = &enic_ethtool_ops; + + netdev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX; + if (ENIC_SETTING(enic, LOOP)) { + netdev->features &= ~NETIF_F_HW_VLAN_TX; + enic->loop_enable = 1; + enic->loop_tag = enic->config.loop_tag; + dev_info(dev, "loopback tag=0x%04x\n", enic->loop_tag); + } + if (ENIC_SETTING(enic, TXCSUM)) + netdev->hw_features |= NETIF_F_SG | NETIF_F_HW_CSUM; + if (ENIC_SETTING(enic, TSO)) + netdev->hw_features |= NETIF_F_TSO | + NETIF_F_TSO6 | NETIF_F_TSO_ECN; + if (ENIC_SETTING(enic, RXCSUM)) + netdev->hw_features |= NETIF_F_RXCSUM; + + netdev->features |= netdev->hw_features; + + if (using_dac) + netdev->features |= NETIF_F_HIGHDMA; + + err = register_netdev(netdev); + if (err) { + dev_err(dev, "Cannot register net device, aborting\n"); + goto err_out_dev_deinit; + } + + return 0; + +err_out_dev_deinit: + enic_dev_deinit(enic); +err_out_dev_close: + vnic_dev_close(enic->vdev); +err_out_vnic_unregister: + vnic_dev_unregister(enic->vdev); +err_out_iounmap: + enic_iounmap(enic); +err_out_release_regions: + pci_release_regions(pdev); +err_out_disable_device: + pci_disable_device(pdev); +err_out_free_netdev: + pci_set_drvdata(pdev, NULL); + free_netdev(netdev); + + return err; +} + +static void __devexit enic_remove(struct pci_dev *pdev) +{ + struct net_device *netdev = pci_get_drvdata(pdev); + + if (netdev) { + struct enic *enic = netdev_priv(netdev); + + cancel_work_sync(&enic->reset); + cancel_work_sync(&enic->change_mtu_work); + unregister_netdev(netdev); + enic_dev_deinit(enic); + vnic_dev_close(enic->vdev); + vnic_dev_unregister(enic->vdev); + enic_iounmap(enic); + pci_release_regions(pdev); + pci_disable_device(pdev); + pci_set_drvdata(pdev, NULL); + free_netdev(netdev); + } +} + +static struct pci_driver enic_driver = { + .name = DRV_NAME, + .id_table = enic_id_table, + .probe = enic_probe, + .remove = __devexit_p(enic_remove), +}; + +static int __init enic_init_module(void) +{ + pr_info("%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION); + + return pci_register_driver(&enic_driver); +} + +static void __exit enic_cleanup_module(void) +{ + pci_unregister_driver(&enic_driver); +} + +module_init(enic_init_module); +module_exit(enic_cleanup_module); diff --git a/drivers/net/ethernet/cisco/enic/enic_pp.c b/drivers/net/ethernet/cisco/enic/enic_pp.c new file mode 100644 index 00000000000..ffaa75dd1de --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/enic_pp.c @@ -0,0 +1,264 @@ +/* + * Copyright 2011 Cisco Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "vnic_vic.h" +#include "enic_res.h" +#include "enic.h" +#include "enic_dev.h" + +static int enic_set_port_profile(struct enic *enic) +{ + struct net_device *netdev = enic->netdev; + struct vic_provinfo *vp; + const u8 oui[3] = VIC_PROVINFO_CISCO_OUI; + const u16 os_type = htons(VIC_GENERIC_PROV_OS_TYPE_LINUX); + char uuid_str[38]; + char client_mac_str[18]; + u8 *client_mac; + int err; + + if (!(enic->pp.set & ENIC_SET_NAME) || !strlen(enic->pp.name)) + return -EINVAL; + + vp = vic_provinfo_alloc(GFP_KERNEL, oui, + VIC_PROVINFO_GENERIC_TYPE); + if (!vp) + return -ENOMEM; + + VIC_PROVINFO_ADD_TLV(vp, + VIC_GENERIC_PROV_TLV_PORT_PROFILE_NAME_STR, + strlen(enic->pp.name) + 1, enic->pp.name); + + if (!is_zero_ether_addr(enic->pp.mac_addr)) + client_mac = enic->pp.mac_addr; + else + client_mac = netdev->dev_addr; + + VIC_PROVINFO_ADD_TLV(vp, + VIC_GENERIC_PROV_TLV_CLIENT_MAC_ADDR, + ETH_ALEN, client_mac); + + snprintf(client_mac_str, sizeof(client_mac_str), "%pM", client_mac); + VIC_PROVINFO_ADD_TLV(vp, + VIC_GENERIC_PROV_TLV_CLUSTER_PORT_UUID_STR, + sizeof(client_mac_str), client_mac_str); + + if (enic->pp.set & ENIC_SET_INSTANCE) { + sprintf(uuid_str, "%pUB", enic->pp.instance_uuid); + VIC_PROVINFO_ADD_TLV(vp, + VIC_GENERIC_PROV_TLV_CLIENT_UUID_STR, + sizeof(uuid_str), uuid_str); + } + + if (enic->pp.set & ENIC_SET_HOST) { + sprintf(uuid_str, "%pUB", enic->pp.host_uuid); + VIC_PROVINFO_ADD_TLV(vp, + VIC_GENERIC_PROV_TLV_HOST_UUID_STR, + sizeof(uuid_str), uuid_str); + } + + VIC_PROVINFO_ADD_TLV(vp, + VIC_GENERIC_PROV_TLV_OS_TYPE, + sizeof(os_type), &os_type); + + err = enic_dev_status_to_errno(enic_dev_init_prov2(enic, vp)); + +add_tlv_failure: + vic_provinfo_free(vp); + + return err; +} + +static int enic_unset_port_profile(struct enic *enic) +{ + int err; + + err = enic_vnic_dev_deinit(enic); + if (err) + return enic_dev_status_to_errno(err); + + enic_reset_addr_lists(enic); + + return 0; +} + +static int enic_are_pp_different(struct enic_port_profile *pp1, + struct enic_port_profile *pp2) +{ + return strcmp(pp1->name, pp2->name) | !!memcmp(pp1->instance_uuid, + pp2->instance_uuid, PORT_UUID_MAX) | + !!memcmp(pp1->host_uuid, pp2->host_uuid, PORT_UUID_MAX) | + !!memcmp(pp1->mac_addr, pp2->mac_addr, ETH_ALEN); +} + +static int enic_pp_preassociate(struct enic *enic, + struct enic_port_profile *prev_pp, int *restore_pp); +static int enic_pp_disassociate(struct enic *enic, + struct enic_port_profile *prev_pp, int *restore_pp); +static int enic_pp_preassociate_rr(struct enic *enic, + struct enic_port_profile *prev_pp, int *restore_pp); +static int enic_pp_associate(struct enic *enic, + struct enic_port_profile *prev_pp, int *restore_pp); + +static int (*enic_pp_handlers[])(struct enic *enic, + struct enic_port_profile *prev_state, int *restore_pp) = { + [PORT_REQUEST_PREASSOCIATE] = enic_pp_preassociate, + [PORT_REQUEST_PREASSOCIATE_RR] = enic_pp_preassociate_rr, + [PORT_REQUEST_ASSOCIATE] = enic_pp_associate, + [PORT_REQUEST_DISASSOCIATE] = enic_pp_disassociate, +}; + +static const int enic_pp_handlers_count = + sizeof(enic_pp_handlers)/sizeof(*enic_pp_handlers); + +static int enic_pp_preassociate(struct enic *enic, + struct enic_port_profile *prev_pp, int *restore_pp) +{ + return -EOPNOTSUPP; +} + +static int enic_pp_disassociate(struct enic *enic, + struct enic_port_profile *prev_pp, int *restore_pp) +{ + return enic_unset_port_profile(enic); +} + +static int enic_pp_preassociate_rr(struct enic *enic, + struct enic_port_profile *prev_pp, int *restore_pp) +{ + int err; + int active = 0; + + if (enic->pp.request != PORT_REQUEST_ASSOCIATE) { + /* If pre-associate is not part of an associate. + We always disassociate first */ + err = enic_pp_handlers[PORT_REQUEST_DISASSOCIATE](enic, + prev_pp, restore_pp); + if (err) + return err; + + *restore_pp = 0; + } + + *restore_pp = 0; + + err = enic_set_port_profile(enic); + if (err) + return err; + + /* If pre-associate is not part of an associate. */ + if (enic->pp.request != PORT_REQUEST_ASSOCIATE) + err = enic_dev_status_to_errno(enic_dev_enable2(enic, active)); + + return err; +} + +static int enic_pp_associate(struct enic *enic, + struct enic_port_profile *prev_pp, int *restore_pp) +{ + int err; + int active = 1; + + /* Check if a pre-associate was called before */ + if (prev_pp->request != PORT_REQUEST_PREASSOCIATE_RR || + (prev_pp->request == PORT_REQUEST_PREASSOCIATE_RR && + enic_are_pp_different(prev_pp, &enic->pp))) { + err = enic_pp_handlers[PORT_REQUEST_DISASSOCIATE]( + enic, prev_pp, restore_pp); + if (err) + return err; + + *restore_pp = 0; + } + + err = enic_pp_handlers[PORT_REQUEST_PREASSOCIATE_RR]( + enic, prev_pp, restore_pp); + if (err) + return err; + + *restore_pp = 0; + + return enic_dev_status_to_errno(enic_dev_enable2(enic, active)); +} + +int enic_process_set_pp_request(struct enic *enic, + struct enic_port_profile *prev_pp, int *restore_pp) +{ + if (enic->pp.request < enic_pp_handlers_count + && enic_pp_handlers[enic->pp.request]) + return enic_pp_handlers[enic->pp.request](enic, + prev_pp, restore_pp); + else + return -EOPNOTSUPP; +} + +int enic_process_get_pp_request(struct enic *enic, int request, + u16 *response) +{ + int err, status = ERR_SUCCESS; + + switch (request) { + + case PORT_REQUEST_PREASSOCIATE_RR: + case PORT_REQUEST_ASSOCIATE: + err = enic_dev_enable2_done(enic, &status); + break; + + case PORT_REQUEST_DISASSOCIATE: + err = enic_dev_deinit_done(enic, &status); + break; + + default: + return -EINVAL; + } + + if (err) + status = err; + + switch (status) { + case ERR_SUCCESS: + *response = PORT_PROFILE_RESPONSE_SUCCESS; + break; + case ERR_EINVAL: + *response = PORT_PROFILE_RESPONSE_INVALID; + break; + case ERR_EBADSTATE: + *response = PORT_PROFILE_RESPONSE_BADSTATE; + break; + case ERR_ENOMEM: + *response = PORT_PROFILE_RESPONSE_INSUFFICIENT_RESOURCES; + break; + case ERR_EINPROGRESS: + *response = PORT_PROFILE_RESPONSE_INPROGRESS; + break; + default: + *response = PORT_PROFILE_RESPONSE_ERROR; + break; + } + + return 0; +} diff --git a/drivers/net/ethernet/cisco/enic/enic_pp.h b/drivers/net/ethernet/cisco/enic/enic_pp.h new file mode 100644 index 00000000000..699e365a944 --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/enic_pp.h @@ -0,0 +1,27 @@ +/* + * Copyright 2011 Cisco Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#ifndef _ENIC_PP_H_ +#define _ENIC_PP_H_ + +int enic_process_set_pp_request(struct enic *enic, + struct enic_port_profile *prev_pp, int *restore_pp); +int enic_process_get_pp_request(struct enic *enic, int request, + u16 *response); + +#endif /* _ENIC_PP_H_ */ diff --git a/drivers/net/ethernet/cisco/enic/enic_res.c b/drivers/net/ethernet/cisco/enic/enic_res.c new file mode 100644 index 00000000000..4a35367de79 --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/enic_res.c @@ -0,0 +1,384 @@ +/* + * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#include +#include +#include +#include +#include + +#include "wq_enet_desc.h" +#include "rq_enet_desc.h" +#include "cq_enet_desc.h" +#include "vnic_resource.h" +#include "vnic_enet.h" +#include "vnic_dev.h" +#include "vnic_wq.h" +#include "vnic_rq.h" +#include "vnic_cq.h" +#include "vnic_intr.h" +#include "vnic_stats.h" +#include "vnic_nic.h" +#include "vnic_rss.h" +#include "enic_res.h" +#include "enic.h" + +int enic_get_vnic_config(struct enic *enic) +{ + struct vnic_enet_config *c = &enic->config; + int err; + + err = vnic_dev_mac_addr(enic->vdev, enic->mac_addr); + if (err) { + dev_err(enic_get_dev(enic), + "Error getting MAC addr, %d\n", err); + return err; + } + +#define GET_CONFIG(m) \ + do { \ + err = vnic_dev_spec(enic->vdev, \ + offsetof(struct vnic_enet_config, m), \ + sizeof(c->m), &c->m); \ + if (err) { \ + dev_err(enic_get_dev(enic), \ + "Error getting %s, %d\n", #m, err); \ + return err; \ + } \ + } while (0) + + GET_CONFIG(flags); + GET_CONFIG(wq_desc_count); + GET_CONFIG(rq_desc_count); + GET_CONFIG(mtu); + GET_CONFIG(intr_timer_type); + GET_CONFIG(intr_mode); + GET_CONFIG(intr_timer_usec); + GET_CONFIG(loop_tag); + + c->wq_desc_count = + min_t(u32, ENIC_MAX_WQ_DESCS, + max_t(u32, ENIC_MIN_WQ_DESCS, + c->wq_desc_count)); + c->wq_desc_count &= 0xffffffe0; /* must be aligned to groups of 32 */ + + c->rq_desc_count = + min_t(u32, ENIC_MAX_RQ_DESCS, + max_t(u32, ENIC_MIN_RQ_DESCS, + c->rq_desc_count)); + c->rq_desc_count &= 0xffffffe0; /* must be aligned to groups of 32 */ + + if (c->mtu == 0) + c->mtu = 1500; + c->mtu = min_t(u16, ENIC_MAX_MTU, + max_t(u16, ENIC_MIN_MTU, + c->mtu)); + + c->intr_timer_usec = min_t(u32, c->intr_timer_usec, + vnic_dev_get_intr_coal_timer_max(enic->vdev)); + + dev_info(enic_get_dev(enic), + "vNIC MAC addr %pM wq/rq %d/%d mtu %d\n", + enic->mac_addr, c->wq_desc_count, c->rq_desc_count, c->mtu); + + dev_info(enic_get_dev(enic), "vNIC csum tx/rx %s/%s " + "tso/lro %s/%s rss %s intr mode %s type %s timer %d usec " + "loopback tag 0x%04x\n", + ENIC_SETTING(enic, TXCSUM) ? "yes" : "no", + ENIC_SETTING(enic, RXCSUM) ? "yes" : "no", + ENIC_SETTING(enic, TSO) ? "yes" : "no", + ENIC_SETTING(enic, LRO) ? "yes" : "no", + ENIC_SETTING(enic, RSS) ? "yes" : "no", + c->intr_mode == VENET_INTR_MODE_INTX ? "INTx" : + c->intr_mode == VENET_INTR_MODE_MSI ? "MSI" : + c->intr_mode == VENET_INTR_MODE_ANY ? "any" : + "unknown", + c->intr_timer_type == VENET_INTR_TYPE_MIN ? "min" : + c->intr_timer_type == VENET_INTR_TYPE_IDLE ? "idle" : + "unknown", + c->intr_timer_usec, + c->loop_tag); + + return 0; +} + +int enic_add_vlan(struct enic *enic, u16 vlanid) +{ + u64 a0 = vlanid, a1 = 0; + int wait = 1000; + int err; + + err = vnic_dev_cmd(enic->vdev, CMD_VLAN_ADD, &a0, &a1, wait); + if (err) + dev_err(enic_get_dev(enic), "Can't add vlan id, %d\n", err); + + return err; +} + +int enic_del_vlan(struct enic *enic, u16 vlanid) +{ + u64 a0 = vlanid, a1 = 0; + int wait = 1000; + int err; + + err = vnic_dev_cmd(enic->vdev, CMD_VLAN_DEL, &a0, &a1, wait); + if (err) + dev_err(enic_get_dev(enic), "Can't delete vlan id, %d\n", err); + + return err; +} + +int enic_set_nic_cfg(struct enic *enic, u8 rss_default_cpu, u8 rss_hash_type, + u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable, u8 tso_ipid_split_en, + u8 ig_vlan_strip_en) +{ + u64 a0, a1; + u32 nic_cfg; + int wait = 1000; + + vnic_set_nic_cfg(&nic_cfg, rss_default_cpu, + rss_hash_type, rss_hash_bits, rss_base_cpu, + rss_enable, tso_ipid_split_en, ig_vlan_strip_en); + + a0 = nic_cfg; + a1 = 0; + + return vnic_dev_cmd(enic->vdev, CMD_NIC_CFG, &a0, &a1, wait); +} + +int enic_set_rss_key(struct enic *enic, dma_addr_t key_pa, u64 len) +{ + u64 a0 = (u64)key_pa, a1 = len; + int wait = 1000; + + return vnic_dev_cmd(enic->vdev, CMD_RSS_KEY, &a0, &a1, wait); +} + +int enic_set_rss_cpu(struct enic *enic, dma_addr_t cpu_pa, u64 len) +{ + u64 a0 = (u64)cpu_pa, a1 = len; + int wait = 1000; + + return vnic_dev_cmd(enic->vdev, CMD_RSS_CPU, &a0, &a1, wait); +} + +void enic_free_vnic_resources(struct enic *enic) +{ + unsigned int i; + + for (i = 0; i < enic->wq_count; i++) + vnic_wq_free(&enic->wq[i]); + for (i = 0; i < enic->rq_count; i++) + vnic_rq_free(&enic->rq[i]); + for (i = 0; i < enic->cq_count; i++) + vnic_cq_free(&enic->cq[i]); + for (i = 0; i < enic->intr_count; i++) + vnic_intr_free(&enic->intr[i]); +} + +void enic_get_res_counts(struct enic *enic) +{ + enic->wq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_WQ); + enic->rq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_RQ); + enic->cq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_CQ); + enic->intr_count = vnic_dev_get_res_count(enic->vdev, + RES_TYPE_INTR_CTRL); + + dev_info(enic_get_dev(enic), + "vNIC resources avail: wq %d rq %d cq %d intr %d\n", + enic->wq_count, enic->rq_count, + enic->cq_count, enic->intr_count); +} + +void enic_init_vnic_resources(struct enic *enic) +{ + enum vnic_dev_intr_mode intr_mode; + unsigned int mask_on_assertion; + unsigned int interrupt_offset; + unsigned int error_interrupt_enable; + unsigned int error_interrupt_offset; + unsigned int cq_index; + unsigned int i; + + intr_mode = vnic_dev_get_intr_mode(enic->vdev); + + /* Init RQ/WQ resources. + * + * RQ[0 - n-1] point to CQ[0 - n-1] + * WQ[0 - m-1] point to CQ[n - n+m-1] + * + * Error interrupt is not enabled for MSI. + */ + + switch (intr_mode) { + case VNIC_DEV_INTR_MODE_INTX: + case VNIC_DEV_INTR_MODE_MSIX: + error_interrupt_enable = 1; + error_interrupt_offset = enic->intr_count - 2; + break; + default: + error_interrupt_enable = 0; + error_interrupt_offset = 0; + break; + } + + for (i = 0; i < enic->rq_count; i++) { + cq_index = i; + vnic_rq_init(&enic->rq[i], + cq_index, + error_interrupt_enable, + error_interrupt_offset); + } + + for (i = 0; i < enic->wq_count; i++) { + cq_index = enic->rq_count + i; + vnic_wq_init(&enic->wq[i], + cq_index, + error_interrupt_enable, + error_interrupt_offset); + } + + /* Init CQ resources + * + * CQ[0 - n+m-1] point to INTR[0] for INTx, MSI + * CQ[0 - n+m-1] point to INTR[0 - n+m-1] for MSI-X + */ + + for (i = 0; i < enic->cq_count; i++) { + + switch (intr_mode) { + case VNIC_DEV_INTR_MODE_MSIX: + interrupt_offset = i; + break; + default: + interrupt_offset = 0; + break; + } + + vnic_cq_init(&enic->cq[i], + 0 /* flow_control_enable */, + 1 /* color_enable */, + 0 /* cq_head */, + 0 /* cq_tail */, + 1 /* cq_tail_color */, + 1 /* interrupt_enable */, + 1 /* cq_entry_enable */, + 0 /* cq_message_enable */, + interrupt_offset, + 0 /* cq_message_addr */); + } + + /* Init INTR resources + * + * mask_on_assertion is not used for INTx due to the level- + * triggered nature of INTx + */ + + switch (intr_mode) { + case VNIC_DEV_INTR_MODE_MSI: + case VNIC_DEV_INTR_MODE_MSIX: + mask_on_assertion = 1; + break; + default: + mask_on_assertion = 0; + break; + } + + for (i = 0; i < enic->intr_count; i++) { + vnic_intr_init(&enic->intr[i], + enic->config.intr_timer_usec, + enic->config.intr_timer_type, + mask_on_assertion); + } +} + +int enic_alloc_vnic_resources(struct enic *enic) +{ + enum vnic_dev_intr_mode intr_mode; + unsigned int i; + int err; + + intr_mode = vnic_dev_get_intr_mode(enic->vdev); + + dev_info(enic_get_dev(enic), "vNIC resources used: " + "wq %d rq %d cq %d intr %d intr mode %s\n", + enic->wq_count, enic->rq_count, + enic->cq_count, enic->intr_count, + intr_mode == VNIC_DEV_INTR_MODE_INTX ? "legacy PCI INTx" : + intr_mode == VNIC_DEV_INTR_MODE_MSI ? "MSI" : + intr_mode == VNIC_DEV_INTR_MODE_MSIX ? "MSI-X" : + "unknown"); + + /* Allocate queue resources + */ + + for (i = 0; i < enic->wq_count; i++) { + err = vnic_wq_alloc(enic->vdev, &enic->wq[i], i, + enic->config.wq_desc_count, + sizeof(struct wq_enet_desc)); + if (err) + goto err_out_cleanup; + } + + for (i = 0; i < enic->rq_count; i++) { + err = vnic_rq_alloc(enic->vdev, &enic->rq[i], i, + enic->config.rq_desc_count, + sizeof(struct rq_enet_desc)); + if (err) + goto err_out_cleanup; + } + + for (i = 0; i < enic->cq_count; i++) { + if (i < enic->rq_count) + err = vnic_cq_alloc(enic->vdev, &enic->cq[i], i, + enic->config.rq_desc_count, + sizeof(struct cq_enet_rq_desc)); + else + err = vnic_cq_alloc(enic->vdev, &enic->cq[i], i, + enic->config.wq_desc_count, + sizeof(struct cq_enet_wq_desc)); + if (err) + goto err_out_cleanup; + } + + for (i = 0; i < enic->intr_count; i++) { + err = vnic_intr_alloc(enic->vdev, &enic->intr[i], i); + if (err) + goto err_out_cleanup; + } + + /* Hook remaining resource + */ + + enic->legacy_pba = vnic_dev_get_res(enic->vdev, + RES_TYPE_INTR_PBA_LEGACY, 0); + if (!enic->legacy_pba && intr_mode == VNIC_DEV_INTR_MODE_INTX) { + dev_err(enic_get_dev(enic), + "Failed to hook legacy pba resource\n"); + err = -ENODEV; + goto err_out_cleanup; + } + + return 0; + +err_out_cleanup: + enic_free_vnic_resources(enic); + + return err; +} diff --git a/drivers/net/ethernet/cisco/enic/enic_res.h b/drivers/net/ethernet/cisco/enic/enic_res.h new file mode 100644 index 00000000000..25be2734c3f --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/enic_res.h @@ -0,0 +1,148 @@ +/* + * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#ifndef _ENIC_RES_H_ +#define _ENIC_RES_H_ + +#include "wq_enet_desc.h" +#include "rq_enet_desc.h" +#include "vnic_wq.h" +#include "vnic_rq.h" + +#define ENIC_MIN_WQ_DESCS 64 +#define ENIC_MAX_WQ_DESCS 4096 +#define ENIC_MIN_RQ_DESCS 64 +#define ENIC_MAX_RQ_DESCS 4096 + +#define ENIC_MIN_MTU 68 +#define ENIC_MAX_MTU 9000 + +#define ENIC_MULTICAST_PERFECT_FILTERS 32 +#define ENIC_UNICAST_PERFECT_FILTERS 32 + +#define ENIC_NON_TSO_MAX_DESC 16 + +#define ENIC_SETTING(enic, f) ((enic->config.flags & VENETF_##f) ? 1 : 0) + +static inline void enic_queue_wq_desc_ex(struct vnic_wq *wq, + void *os_buf, dma_addr_t dma_addr, unsigned int len, + unsigned int mss_or_csum_offset, unsigned int hdr_len, + int vlan_tag_insert, unsigned int vlan_tag, + int offload_mode, int cq_entry, int sop, int eop, int loopback) +{ + struct wq_enet_desc *desc = vnic_wq_next_desc(wq); + + wq_enet_desc_enc(desc, + (u64)dma_addr | VNIC_PADDR_TARGET, + (u16)len, + (u16)mss_or_csum_offset, + (u16)hdr_len, (u8)offload_mode, + (u8)eop, (u8)cq_entry, + 0, /* fcoe_encap */ + (u8)vlan_tag_insert, + (u16)vlan_tag, + (u8)loopback); + + vnic_wq_post(wq, os_buf, dma_addr, len, sop, eop); +} + +static inline void enic_queue_wq_desc_cont(struct vnic_wq *wq, + void *os_buf, dma_addr_t dma_addr, unsigned int len, + int eop, int loopback) +{ + enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len, + 0, 0, 0, 0, 0, + eop, 0 /* !SOP */, eop, loopback); +} + +static inline void enic_queue_wq_desc(struct vnic_wq *wq, void *os_buf, + dma_addr_t dma_addr, unsigned int len, int vlan_tag_insert, + unsigned int vlan_tag, int eop, int loopback) +{ + enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len, + 0, 0, vlan_tag_insert, vlan_tag, + WQ_ENET_OFFLOAD_MODE_CSUM, + eop, 1 /* SOP */, eop, loopback); +} + +static inline void enic_queue_wq_desc_csum(struct vnic_wq *wq, + void *os_buf, dma_addr_t dma_addr, unsigned int len, + int ip_csum, int tcpudp_csum, int vlan_tag_insert, + unsigned int vlan_tag, int eop, int loopback) +{ + enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len, + (ip_csum ? 1 : 0) + (tcpudp_csum ? 2 : 0), + 0, vlan_tag_insert, vlan_tag, + WQ_ENET_OFFLOAD_MODE_CSUM, + eop, 1 /* SOP */, eop, loopback); +} + +static inline void enic_queue_wq_desc_csum_l4(struct vnic_wq *wq, + void *os_buf, dma_addr_t dma_addr, unsigned int len, + unsigned int csum_offset, unsigned int hdr_len, + int vlan_tag_insert, unsigned int vlan_tag, int eop, int loopback) +{ + enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len, + csum_offset, hdr_len, vlan_tag_insert, vlan_tag, + WQ_ENET_OFFLOAD_MODE_CSUM_L4, + eop, 1 /* SOP */, eop, loopback); +} + +static inline void enic_queue_wq_desc_tso(struct vnic_wq *wq, + void *os_buf, dma_addr_t dma_addr, unsigned int len, + unsigned int mss, unsigned int hdr_len, int vlan_tag_insert, + unsigned int vlan_tag, int eop, int loopback) +{ + enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len, + mss, hdr_len, vlan_tag_insert, vlan_tag, + WQ_ENET_OFFLOAD_MODE_TSO, + eop, 1 /* SOP */, eop, loopback); +} + +static inline void enic_queue_rq_desc(struct vnic_rq *rq, + void *os_buf, unsigned int os_buf_index, + dma_addr_t dma_addr, unsigned int len) +{ + struct rq_enet_desc *desc = vnic_rq_next_desc(rq); + u8 type = os_buf_index ? + RQ_ENET_TYPE_NOT_SOP : RQ_ENET_TYPE_ONLY_SOP; + + rq_enet_desc_enc(desc, + (u64)dma_addr | VNIC_PADDR_TARGET, + type, (u16)len); + + vnic_rq_post(rq, os_buf, os_buf_index, dma_addr, len); +} + +struct enic; + +int enic_get_vnic_config(struct enic *); +int enic_add_vlan(struct enic *enic, u16 vlanid); +int enic_del_vlan(struct enic *enic, u16 vlanid); +int enic_set_nic_cfg(struct enic *enic, u8 rss_default_cpu, u8 rss_hash_type, + u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable, u8 tso_ipid_split_en, + u8 ig_vlan_strip_en); +int enic_set_rss_key(struct enic *enic, dma_addr_t key_pa, u64 len); +int enic_set_rss_cpu(struct enic *enic, dma_addr_t cpu_pa, u64 len); +void enic_get_res_counts(struct enic *enic); +void enic_init_vnic_resources(struct enic *enic); +int enic_alloc_vnic_resources(struct enic *); +void enic_free_vnic_resources(struct enic *); + +#endif /* _ENIC_RES_H_ */ diff --git a/drivers/net/ethernet/cisco/enic/rq_enet_desc.h b/drivers/net/ethernet/cisco/enic/rq_enet_desc.h new file mode 100644 index 00000000000..e6dd30988d6 --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/rq_enet_desc.h @@ -0,0 +1,60 @@ +/* + * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#ifndef _RQ_ENET_DESC_H_ +#define _RQ_ENET_DESC_H_ + +/* Ethernet receive queue descriptor: 16B */ +struct rq_enet_desc { + __le64 address; + __le16 length_type; + u8 reserved[6]; +}; + +enum rq_enet_type_types { + RQ_ENET_TYPE_ONLY_SOP = 0, + RQ_ENET_TYPE_NOT_SOP = 1, + RQ_ENET_TYPE_RESV2 = 2, + RQ_ENET_TYPE_RESV3 = 3, +}; + +#define RQ_ENET_ADDR_BITS 64 +#define RQ_ENET_LEN_BITS 14 +#define RQ_ENET_LEN_MASK ((1 << RQ_ENET_LEN_BITS) - 1) +#define RQ_ENET_TYPE_BITS 2 +#define RQ_ENET_TYPE_MASK ((1 << RQ_ENET_TYPE_BITS) - 1) + +static inline void rq_enet_desc_enc(struct rq_enet_desc *desc, + u64 address, u8 type, u16 length) +{ + desc->address = cpu_to_le64(address); + desc->length_type = cpu_to_le16((length & RQ_ENET_LEN_MASK) | + ((type & RQ_ENET_TYPE_MASK) << RQ_ENET_LEN_BITS)); +} + +static inline void rq_enet_desc_dec(struct rq_enet_desc *desc, + u64 *address, u8 *type, u16 *length) +{ + *address = le64_to_cpu(desc->address); + *length = le16_to_cpu(desc->length_type) & RQ_ENET_LEN_MASK; + *type = (u8)((le16_to_cpu(desc->length_type) >> RQ_ENET_LEN_BITS) & + RQ_ENET_TYPE_MASK); +} + +#endif /* _RQ_ENET_DESC_H_ */ diff --git a/drivers/net/ethernet/cisco/enic/vnic_cq.c b/drivers/net/ethernet/cisco/enic/vnic_cq.c new file mode 100644 index 00000000000..0daa1c7073c --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/vnic_cq.c @@ -0,0 +1,91 @@ +/* + * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#include +#include +#include +#include + +#include "vnic_dev.h" +#include "vnic_cq.h" + +void vnic_cq_free(struct vnic_cq *cq) +{ + vnic_dev_free_desc_ring(cq->vdev, &cq->ring); + + cq->ctrl = NULL; +} + +int vnic_cq_alloc(struct vnic_dev *vdev, struct vnic_cq *cq, unsigned int index, + unsigned int desc_count, unsigned int desc_size) +{ + int err; + + cq->index = index; + cq->vdev = vdev; + + cq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_CQ, index); + if (!cq->ctrl) { + pr_err("Failed to hook CQ[%d] resource\n", index); + return -EINVAL; + } + + err = vnic_dev_alloc_desc_ring(vdev, &cq->ring, desc_count, desc_size); + if (err) + return err; + + return 0; +} + +void vnic_cq_init(struct vnic_cq *cq, unsigned int flow_control_enable, + unsigned int color_enable, unsigned int cq_head, unsigned int cq_tail, + unsigned int cq_tail_color, unsigned int interrupt_enable, + unsigned int cq_entry_enable, unsigned int cq_message_enable, + unsigned int interrupt_offset, u64 cq_message_addr) +{ + u64 paddr; + + paddr = (u64)cq->ring.base_addr | VNIC_PADDR_TARGET; + writeq(paddr, &cq->ctrl->ring_base); + iowrite32(cq->ring.desc_count, &cq->ctrl->ring_size); + iowrite32(flow_control_enable, &cq->ctrl->flow_control_enable); + iowrite32(color_enable, &cq->ctrl->color_enable); + iowrite32(cq_head, &cq->ctrl->cq_head); + iowrite32(cq_tail, &cq->ctrl->cq_tail); + iowrite32(cq_tail_color, &cq->ctrl->cq_tail_color); + iowrite32(interrupt_enable, &cq->ctrl->interrupt_enable); + iowrite32(cq_entry_enable, &cq->ctrl->cq_entry_enable); + iowrite32(cq_message_enable, &cq->ctrl->cq_message_enable); + iowrite32(interrupt_offset, &cq->ctrl->interrupt_offset); + writeq(cq_message_addr, &cq->ctrl->cq_message_addr); + + cq->interrupt_offset = interrupt_offset; +} + +void vnic_cq_clean(struct vnic_cq *cq) +{ + cq->to_clean = 0; + cq->last_color = 0; + + iowrite32(0, &cq->ctrl->cq_head); + iowrite32(0, &cq->ctrl->cq_tail); + iowrite32(1, &cq->ctrl->cq_tail_color); + + vnic_dev_clear_desc_ring(&cq->ring); +} diff --git a/drivers/net/ethernet/cisco/enic/vnic_cq.h b/drivers/net/ethernet/cisco/enic/vnic_cq.h new file mode 100644 index 00000000000..579315cbe80 --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/vnic_cq.h @@ -0,0 +1,114 @@ +/* + * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#ifndef _VNIC_CQ_H_ +#define _VNIC_CQ_H_ + +#include "cq_desc.h" +#include "vnic_dev.h" + +/* Completion queue control */ +struct vnic_cq_ctrl { + u64 ring_base; /* 0x00 */ + u32 ring_size; /* 0x08 */ + u32 pad0; + u32 flow_control_enable; /* 0x10 */ + u32 pad1; + u32 color_enable; /* 0x18 */ + u32 pad2; + u32 cq_head; /* 0x20 */ + u32 pad3; + u32 cq_tail; /* 0x28 */ + u32 pad4; + u32 cq_tail_color; /* 0x30 */ + u32 pad5; + u32 interrupt_enable; /* 0x38 */ + u32 pad6; + u32 cq_entry_enable; /* 0x40 */ + u32 pad7; + u32 cq_message_enable; /* 0x48 */ + u32 pad8; + u32 interrupt_offset; /* 0x50 */ + u32 pad9; + u64 cq_message_addr; /* 0x58 */ + u32 pad10; +}; + +struct vnic_cq { + unsigned int index; + struct vnic_dev *vdev; + struct vnic_cq_ctrl __iomem *ctrl; /* memory-mapped */ + struct vnic_dev_ring ring; + unsigned int to_clean; + unsigned int last_color; + unsigned int interrupt_offset; +}; + +static inline unsigned int vnic_cq_service(struct vnic_cq *cq, + unsigned int work_to_do, + int (*q_service)(struct vnic_dev *vdev, struct cq_desc *cq_desc, + u8 type, u16 q_number, u16 completed_index, void *opaque), + void *opaque) +{ + struct cq_desc *cq_desc; + unsigned int work_done = 0; + u16 q_number, completed_index; + u8 type, color; + + cq_desc = (struct cq_desc *)((u8 *)cq->ring.descs + + cq->ring.desc_size * cq->to_clean); + cq_desc_dec(cq_desc, &type, &color, + &q_number, &completed_index); + + while (color != cq->last_color) { + + if ((*q_service)(cq->vdev, cq_desc, type, + q_number, completed_index, opaque)) + break; + + cq->to_clean++; + if (cq->to_clean == cq->ring.desc_count) { + cq->to_clean = 0; + cq->last_color = cq->last_color ? 0 : 1; + } + + cq_desc = (struct cq_desc *)((u8 *)cq->ring.descs + + cq->ring.desc_size * cq->to_clean); + cq_desc_dec(cq_desc, &type, &color, + &q_number, &completed_index); + + work_done++; + if (work_done >= work_to_do) + break; + } + + return work_done; +} + +void vnic_cq_free(struct vnic_cq *cq); +int vnic_cq_alloc(struct vnic_dev *vdev, struct vnic_cq *cq, unsigned int index, + unsigned int desc_count, unsigned int desc_size); +void vnic_cq_init(struct vnic_cq *cq, unsigned int flow_control_enable, + unsigned int color_enable, unsigned int cq_head, unsigned int cq_tail, + unsigned int cq_tail_color, unsigned int interrupt_enable, + unsigned int cq_entry_enable, unsigned int message_enable, + unsigned int interrupt_offset, u64 message_addr); +void vnic_cq_clean(struct vnic_cq *cq); + +#endif /* _VNIC_CQ_H_ */ diff --git a/drivers/net/ethernet/cisco/enic/vnic_dev.c b/drivers/net/ethernet/cisco/enic/vnic_dev.c new file mode 100644 index 00000000000..8c4c8cf486f --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/vnic_dev.c @@ -0,0 +1,1003 @@ +/* + * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#include +#include +#include +#include +#include +#include + +#include "vnic_resource.h" +#include "vnic_devcmd.h" +#include "vnic_dev.h" +#include "vnic_stats.h" + +enum vnic_proxy_type { + PROXY_NONE, + PROXY_BY_BDF, +}; + +struct vnic_res { + void __iomem *vaddr; + dma_addr_t bus_addr; + unsigned int count; +}; + +struct vnic_intr_coal_timer_info { + u32 mul; + u32 div; + u32 max_usec; +}; + +struct vnic_dev { + void *priv; + struct pci_dev *pdev; + struct vnic_res res[RES_TYPE_MAX]; + enum vnic_dev_intr_mode intr_mode; + struct vnic_devcmd __iomem *devcmd; + struct vnic_devcmd_notify *notify; + struct vnic_devcmd_notify notify_copy; + dma_addr_t notify_pa; + u32 notify_sz; + dma_addr_t linkstatus_pa; + struct vnic_stats *stats; + dma_addr_t stats_pa; + struct vnic_devcmd_fw_info *fw_info; + dma_addr_t fw_info_pa; + enum vnic_proxy_type proxy; + u32 proxy_index; + u64 args[VNIC_DEVCMD_NARGS]; + struct vnic_intr_coal_timer_info intr_coal_timer_info; +}; + +#define VNIC_MAX_RES_HDR_SIZE \ + (sizeof(struct vnic_resource_header) + \ + sizeof(struct vnic_resource) * RES_TYPE_MAX) +#define VNIC_RES_STRIDE 128 + +void *vnic_dev_priv(struct vnic_dev *vdev) +{ + return vdev->priv; +} + +static int vnic_dev_discover_res(struct vnic_dev *vdev, + struct vnic_dev_bar *bar, unsigned int num_bars) +{ + struct vnic_resource_header __iomem *rh; + struct mgmt_barmap_hdr __iomem *mrh; + struct vnic_resource __iomem *r; + u8 type; + + if (num_bars == 0) + return -EINVAL; + + if (bar->len < VNIC_MAX_RES_HDR_SIZE) { + pr_err("vNIC BAR0 res hdr length error\n"); + return -EINVAL; + } + + rh = bar->vaddr; + mrh = bar->vaddr; + if (!rh) { + pr_err("vNIC BAR0 res hdr not mem-mapped\n"); + return -EINVAL; + } + + /* Check for mgmt vnic in addition to normal vnic */ + if ((ioread32(&rh->magic) != VNIC_RES_MAGIC) || + (ioread32(&rh->version) != VNIC_RES_VERSION)) { + if ((ioread32(&mrh->magic) != MGMTVNIC_MAGIC) || + (ioread32(&mrh->version) != MGMTVNIC_VERSION)) { + pr_err("vNIC BAR0 res magic/version error " + "exp (%lx/%lx) or (%lx/%lx), curr (%x/%x)\n", + VNIC_RES_MAGIC, VNIC_RES_VERSION, + MGMTVNIC_MAGIC, MGMTVNIC_VERSION, + ioread32(&rh->magic), ioread32(&rh->version)); + return -EINVAL; + } + } + + if (ioread32(&mrh->magic) == MGMTVNIC_MAGIC) + r = (struct vnic_resource __iomem *)(mrh + 1); + else + r = (struct vnic_resource __iomem *)(rh + 1); + + + while ((type = ioread8(&r->type)) != RES_TYPE_EOL) { + + u8 bar_num = ioread8(&r->bar); + u32 bar_offset = ioread32(&r->bar_offset); + u32 count = ioread32(&r->count); + u32 len; + + r++; + + if (bar_num >= num_bars) + continue; + + if (!bar[bar_num].len || !bar[bar_num].vaddr) + continue; + + switch (type) { + case RES_TYPE_WQ: + case RES_TYPE_RQ: + case RES_TYPE_CQ: + case RES_TYPE_INTR_CTRL: + /* each count is stride bytes long */ + len = count * VNIC_RES_STRIDE; + if (len + bar_offset > bar[bar_num].len) { + pr_err("vNIC BAR0 resource %d " + "out-of-bounds, offset 0x%x + " + "size 0x%x > bar len 0x%lx\n", + type, bar_offset, + len, + bar[bar_num].len); + return -EINVAL; + } + break; + case RES_TYPE_INTR_PBA_LEGACY: + case RES_TYPE_DEVCMD: + len = count; + break; + default: + continue; + } + + vdev->res[type].count = count; + vdev->res[type].vaddr = (char __iomem *)bar[bar_num].vaddr + + bar_offset; + vdev->res[type].bus_addr = bar[bar_num].bus_addr + bar_offset; + } + + return 0; +} + +unsigned int vnic_dev_get_res_count(struct vnic_dev *vdev, + enum vnic_res_type type) +{ + return vdev->res[type].count; +} + +void __iomem *vnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type, + unsigned int index) +{ + if (!vdev->res[type].vaddr) + return NULL; + + switch (type) { + case RES_TYPE_WQ: + case RES_TYPE_RQ: + case RES_TYPE_CQ: + case RES_TYPE_INTR_CTRL: + return (char __iomem *)vdev->res[type].vaddr + + index * VNIC_RES_STRIDE; + default: + return (char __iomem *)vdev->res[type].vaddr; + } +} + +static unsigned int vnic_dev_desc_ring_size(struct vnic_dev_ring *ring, + unsigned int desc_count, unsigned int desc_size) +{ + /* The base address of the desc rings must be 512 byte aligned. + * Descriptor count is aligned to groups of 32 descriptors. A + * count of 0 means the maximum 4096 descriptors. Descriptor + * size is aligned to 16 bytes. + */ + + unsigned int count_align = 32; + unsigned int desc_align = 16; + + ring->base_align = 512; + + if (desc_count == 0) + desc_count = 4096; + + ring->desc_count = ALIGN(desc_count, count_align); + + ring->desc_size = ALIGN(desc_size, desc_align); + + ring->size = ring->desc_count * ring->desc_size; + ring->size_unaligned = ring->size + ring->base_align; + + return ring->size_unaligned; +} + +void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring) +{ + memset(ring->descs, 0, ring->size); +} + +int vnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring, + unsigned int desc_count, unsigned int desc_size) +{ + vnic_dev_desc_ring_size(ring, desc_count, desc_size); + + ring->descs_unaligned = pci_alloc_consistent(vdev->pdev, + ring->size_unaligned, + &ring->base_addr_unaligned); + + if (!ring->descs_unaligned) { + pr_err("Failed to allocate ring (size=%d), aborting\n", + (int)ring->size); + return -ENOMEM; + } + + ring->base_addr = ALIGN(ring->base_addr_unaligned, + ring->base_align); + ring->descs = (u8 *)ring->descs_unaligned + + (ring->base_addr - ring->base_addr_unaligned); + + vnic_dev_clear_desc_ring(ring); + + ring->desc_avail = ring->desc_count - 1; + + return 0; +} + +void vnic_dev_free_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring) +{ + if (ring->descs) { + pci_free_consistent(vdev->pdev, + ring->size_unaligned, + ring->descs_unaligned, + ring->base_addr_unaligned); + ring->descs = NULL; + } +} + +static int _vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd, + int wait) +{ + struct vnic_devcmd __iomem *devcmd = vdev->devcmd; + unsigned int i; + int delay; + u32 status; + int err; + + status = ioread32(&devcmd->status); + if (status == 0xFFFFFFFF) { + /* PCI-e target device is gone */ + return -ENODEV; + } + if (status & STAT_BUSY) { + pr_err("Busy devcmd %d\n", _CMD_N(cmd)); + return -EBUSY; + } + + if (_CMD_DIR(cmd) & _CMD_DIR_WRITE) { + for (i = 0; i < VNIC_DEVCMD_NARGS; i++) + writeq(vdev->args[i], &devcmd->args[i]); + wmb(); + } + + iowrite32(cmd, &devcmd->cmd); + + if ((_CMD_FLAGS(cmd) & _CMD_FLAGS_NOWAIT)) + return 0; + + for (delay = 0; delay < wait; delay++) { + + udelay(100); + + status = ioread32(&devcmd->status); + if (status == 0xFFFFFFFF) { + /* PCI-e target device is gone */ + return -ENODEV; + } + + if (!(status & STAT_BUSY)) { + + if (status & STAT_ERROR) { + err = (int)readq(&devcmd->args[0]); + if (err != ERR_ECMDUNKNOWN || + cmd != CMD_CAPABILITY) + pr_err("Error %d devcmd %d\n", + err, _CMD_N(cmd)); + return err; + } + + if (_CMD_DIR(cmd) & _CMD_DIR_READ) { + rmb(); + for (i = 0; i < VNIC_DEVCMD_NARGS; i++) + vdev->args[i] = readq(&devcmd->args[i]); + } + + return 0; + } + } + + pr_err("Timedout devcmd %d\n", _CMD_N(cmd)); + return -ETIMEDOUT; +} + +static int vnic_dev_cmd_proxy_by_bdf(struct vnic_dev *vdev, + enum vnic_devcmd_cmd cmd, u64 *a0, u64 *a1, int wait) +{ + u32 status; + int err; + + memset(vdev->args, 0, sizeof(vdev->args)); + + vdev->args[0] = vdev->proxy_index; /* bdf */ + vdev->args[1] = cmd; + vdev->args[2] = *a0; + vdev->args[3] = *a1; + + err = _vnic_dev_cmd(vdev, CMD_PROXY_BY_BDF, wait); + if (err) + return err; + + status = (u32)vdev->args[0]; + if (status & STAT_ERROR) { + err = (int)vdev->args[1]; + if (err != ERR_ECMDUNKNOWN || + cmd != CMD_CAPABILITY) + pr_err("Error %d proxy devcmd %d\n", err, _CMD_N(cmd)); + return err; + } + + *a0 = vdev->args[1]; + *a1 = vdev->args[2]; + + return 0; +} + +static int vnic_dev_cmd_no_proxy(struct vnic_dev *vdev, + enum vnic_devcmd_cmd cmd, u64 *a0, u64 *a1, int wait) +{ + int err; + + vdev->args[0] = *a0; + vdev->args[1] = *a1; + + err = _vnic_dev_cmd(vdev, cmd, wait); + + *a0 = vdev->args[0]; + *a1 = vdev->args[1]; + + return err; +} + +int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd, + u64 *a0, u64 *a1, int wait) +{ + memset(vdev->args, 0, sizeof(vdev->args)); + + switch (vdev->proxy) { + case PROXY_BY_BDF: + return vnic_dev_cmd_proxy_by_bdf(vdev, cmd, a0, a1, wait); + case PROXY_NONE: + default: + return vnic_dev_cmd_no_proxy(vdev, cmd, a0, a1, wait); + } +} + +static int vnic_dev_capable(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd) +{ + u64 a0 = (u32)cmd, a1 = 0; + int wait = 1000; + int err; + + err = vnic_dev_cmd(vdev, CMD_CAPABILITY, &a0, &a1, wait); + + return !(err || a0); +} + +int vnic_dev_fw_info(struct vnic_dev *vdev, + struct vnic_devcmd_fw_info **fw_info) +{ + u64 a0, a1 = 0; + int wait = 1000; + int err = 0; + + if (!vdev->fw_info) { + vdev->fw_info = pci_alloc_consistent(vdev->pdev, + sizeof(struct vnic_devcmd_fw_info), + &vdev->fw_info_pa); + if (!vdev->fw_info) + return -ENOMEM; + + memset(vdev->fw_info, 0, sizeof(struct vnic_devcmd_fw_info)); + + a0 = vdev->fw_info_pa; + a1 = sizeof(struct vnic_devcmd_fw_info); + + /* only get fw_info once and cache it */ + err = vnic_dev_cmd(vdev, CMD_MCPU_FW_INFO, &a0, &a1, wait); + if (err == ERR_ECMDUNKNOWN) { + err = vnic_dev_cmd(vdev, CMD_MCPU_FW_INFO_OLD, + &a0, &a1, wait); + } + } + + *fw_info = vdev->fw_info; + + return err; +} + +int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, unsigned int size, + void *value) +{ + u64 a0, a1; + int wait = 1000; + int err; + + a0 = offset; + a1 = size; + + err = vnic_dev_cmd(vdev, CMD_DEV_SPEC, &a0, &a1, wait); + + switch (size) { + case 1: *(u8 *)value = (u8)a0; break; + case 2: *(u16 *)value = (u16)a0; break; + case 4: *(u32 *)value = (u32)a0; break; + case 8: *(u64 *)value = a0; break; + default: BUG(); break; + } + + return err; +} + +int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats) +{ + u64 a0, a1; + int wait = 1000; + + if (!vdev->stats) { + vdev->stats = pci_alloc_consistent(vdev->pdev, + sizeof(struct vnic_stats), &vdev->stats_pa); + if (!vdev->stats) + return -ENOMEM; + } + + *stats = vdev->stats; + a0 = vdev->stats_pa; + a1 = sizeof(struct vnic_stats); + + return vnic_dev_cmd(vdev, CMD_STATS_DUMP, &a0, &a1, wait); +} + +int vnic_dev_close(struct vnic_dev *vdev) +{ + u64 a0 = 0, a1 = 0; + int wait = 1000; + return vnic_dev_cmd(vdev, CMD_CLOSE, &a0, &a1, wait); +} + +int vnic_dev_enable_wait(struct vnic_dev *vdev) +{ + u64 a0 = 0, a1 = 0; + int wait = 1000; + int err; + + err = vnic_dev_cmd(vdev, CMD_ENABLE_WAIT, &a0, &a1, wait); + if (err == ERR_ECMDUNKNOWN) + return vnic_dev_cmd(vdev, CMD_ENABLE, &a0, &a1, wait); + + return err; +} + +int vnic_dev_disable(struct vnic_dev *vdev) +{ + u64 a0 = 0, a1 = 0; + int wait = 1000; + return vnic_dev_cmd(vdev, CMD_DISABLE, &a0, &a1, wait); +} + +int vnic_dev_open(struct vnic_dev *vdev, int arg) +{ + u64 a0 = (u32)arg, a1 = 0; + int wait = 1000; + return vnic_dev_cmd(vdev, CMD_OPEN, &a0, &a1, wait); +} + +int vnic_dev_open_done(struct vnic_dev *vdev, int *done) +{ + u64 a0 = 0, a1 = 0; + int wait = 1000; + int err; + + *done = 0; + + err = vnic_dev_cmd(vdev, CMD_OPEN_STATUS, &a0, &a1, wait); + if (err) + return err; + + *done = (a0 == 0); + + return 0; +} + +static int vnic_dev_soft_reset(struct vnic_dev *vdev, int arg) +{ + u64 a0 = (u32)arg, a1 = 0; + int wait = 1000; + return vnic_dev_cmd(vdev, CMD_SOFT_RESET, &a0, &a1, wait); +} + +static int vnic_dev_soft_reset_done(struct vnic_dev *vdev, int *done) +{ + u64 a0 = 0, a1 = 0; + int wait = 1000; + int err; + + *done = 0; + + err = vnic_dev_cmd(vdev, CMD_SOFT_RESET_STATUS, &a0, &a1, wait); + if (err) + return err; + + *done = (a0 == 0); + + return 0; +} + +int vnic_dev_hang_reset(struct vnic_dev *vdev, int arg) +{ + u64 a0 = (u32)arg, a1 = 0; + int wait = 1000; + int err; + + err = vnic_dev_cmd(vdev, CMD_HANG_RESET, &a0, &a1, wait); + if (err == ERR_ECMDUNKNOWN) { + err = vnic_dev_soft_reset(vdev, arg); + if (err) + return err; + + return vnic_dev_init(vdev, 0); + } + + return err; +} + +int vnic_dev_hang_reset_done(struct vnic_dev *vdev, int *done) +{ + u64 a0 = 0, a1 = 0; + int wait = 1000; + int err; + + *done = 0; + + err = vnic_dev_cmd(vdev, CMD_HANG_RESET_STATUS, &a0, &a1, wait); + if (err) { + if (err == ERR_ECMDUNKNOWN) + return vnic_dev_soft_reset_done(vdev, done); + return err; + } + + *done = (a0 == 0); + + return 0; +} + +int vnic_dev_hang_notify(struct vnic_dev *vdev) +{ + u64 a0, a1; + int wait = 1000; + return vnic_dev_cmd(vdev, CMD_HANG_NOTIFY, &a0, &a1, wait); +} + +int vnic_dev_mac_addr(struct vnic_dev *vdev, u8 *mac_addr) +{ + u64 a0, a1; + int wait = 1000; + int err, i; + + for (i = 0; i < ETH_ALEN; i++) + mac_addr[i] = 0; + + err = vnic_dev_cmd(vdev, CMD_MAC_ADDR, &a0, &a1, wait); + if (err) + return err; + + for (i = 0; i < ETH_ALEN; i++) + mac_addr[i] = ((u8 *)&a0)[i]; + + return 0; +} + +int vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast, + int broadcast, int promisc, int allmulti) +{ + u64 a0, a1 = 0; + int wait = 1000; + int err; + + a0 = (directed ? CMD_PFILTER_DIRECTED : 0) | + (multicast ? CMD_PFILTER_MULTICAST : 0) | + (broadcast ? CMD_PFILTER_BROADCAST : 0) | + (promisc ? CMD_PFILTER_PROMISCUOUS : 0) | + (allmulti ? CMD_PFILTER_ALL_MULTICAST : 0); + + err = vnic_dev_cmd(vdev, CMD_PACKET_FILTER, &a0, &a1, wait); + if (err) + pr_err("Can't set packet filter\n"); + + return err; +} + +int vnic_dev_add_addr(struct vnic_dev *vdev, u8 *addr) +{ + u64 a0 = 0, a1 = 0; + int wait = 1000; + int err; + int i; + + for (i = 0; i < ETH_ALEN; i++) + ((u8 *)&a0)[i] = addr[i]; + + err = vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait); + if (err) + pr_err("Can't add addr [%pM], %d\n", addr, err); + + return err; +} + +int vnic_dev_del_addr(struct vnic_dev *vdev, u8 *addr) +{ + u64 a0 = 0, a1 = 0; + int wait = 1000; + int err; + int i; + + for (i = 0; i < ETH_ALEN; i++) + ((u8 *)&a0)[i] = addr[i]; + + err = vnic_dev_cmd(vdev, CMD_ADDR_DEL, &a0, &a1, wait); + if (err) + pr_err("Can't del addr [%pM], %d\n", addr, err); + + return err; +} + +int vnic_dev_set_ig_vlan_rewrite_mode(struct vnic_dev *vdev, + u8 ig_vlan_rewrite_mode) +{ + u64 a0 = ig_vlan_rewrite_mode, a1 = 0; + int wait = 1000; + int err; + + err = vnic_dev_cmd(vdev, CMD_IG_VLAN_REWRITE_MODE, &a0, &a1, wait); + if (err == ERR_ECMDUNKNOWN) + return 0; + + return err; +} + +static int vnic_dev_notify_setcmd(struct vnic_dev *vdev, + void *notify_addr, dma_addr_t notify_pa, u16 intr) +{ + u64 a0, a1; + int wait = 1000; + int r; + + memset(notify_addr, 0, sizeof(struct vnic_devcmd_notify)); + vdev->notify = notify_addr; + vdev->notify_pa = notify_pa; + + a0 = (u64)notify_pa; + a1 = ((u64)intr << 32) & 0x0000ffff00000000ULL; + a1 += sizeof(struct vnic_devcmd_notify); + + r = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait); + vdev->notify_sz = (r == 0) ? (u32)a1 : 0; + return r; +} + +int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr) +{ + void *notify_addr; + dma_addr_t notify_pa; + + if (vdev->notify || vdev->notify_pa) { + pr_err("notify block %p still allocated", vdev->notify); + return -EINVAL; + } + + notify_addr = pci_alloc_consistent(vdev->pdev, + sizeof(struct vnic_devcmd_notify), + ¬ify_pa); + if (!notify_addr) + return -ENOMEM; + + return vnic_dev_notify_setcmd(vdev, notify_addr, notify_pa, intr); +} + +static int vnic_dev_notify_unsetcmd(struct vnic_dev *vdev) +{ + u64 a0, a1; + int wait = 1000; + int err; + + a0 = 0; /* paddr = 0 to unset notify buffer */ + a1 = 0x0000ffff00000000ULL; /* intr num = -1 to unreg for intr */ + a1 += sizeof(struct vnic_devcmd_notify); + + err = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait); + vdev->notify = NULL; + vdev->notify_pa = 0; + vdev->notify_sz = 0; + + return err; +} + +int vnic_dev_notify_unset(struct vnic_dev *vdev) +{ + if (vdev->notify) { + pci_free_consistent(vdev->pdev, + sizeof(struct vnic_devcmd_notify), + vdev->notify, + vdev->notify_pa); + } + + return vnic_dev_notify_unsetcmd(vdev); +} + +static int vnic_dev_notify_ready(struct vnic_dev *vdev) +{ + u32 *words; + unsigned int nwords = vdev->notify_sz / 4; + unsigned int i; + u32 csum; + + if (!vdev->notify || !vdev->notify_sz) + return 0; + + do { + csum = 0; + memcpy(&vdev->notify_copy, vdev->notify, vdev->notify_sz); + words = (u32 *)&vdev->notify_copy; + for (i = 1; i < nwords; i++) + csum += words[i]; + } while (csum != words[0]); + + return 1; +} + +int vnic_dev_init(struct vnic_dev *vdev, int arg) +{ + u64 a0 = (u32)arg, a1 = 0; + int wait = 1000; + int r = 0; + + if (vnic_dev_capable(vdev, CMD_INIT)) + r = vnic_dev_cmd(vdev, CMD_INIT, &a0, &a1, wait); + else { + vnic_dev_cmd(vdev, CMD_INIT_v1, &a0, &a1, wait); + if (a0 & CMD_INITF_DEFAULT_MAC) { + /* Emulate these for old CMD_INIT_v1 which + * didn't pass a0 so no CMD_INITF_*. + */ + vnic_dev_cmd(vdev, CMD_MAC_ADDR, &a0, &a1, wait); + vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait); + } + } + return r; +} + +int vnic_dev_deinit(struct vnic_dev *vdev) +{ + u64 a0 = 0, a1 = 0; + int wait = 1000; + + return vnic_dev_cmd(vdev, CMD_DEINIT, &a0, &a1, wait); +} + +void vnic_dev_intr_coal_timer_info_default(struct vnic_dev *vdev) +{ + /* Default: hardware intr coal timer is in units of 1.5 usecs */ + vdev->intr_coal_timer_info.mul = 2; + vdev->intr_coal_timer_info.div = 3; + vdev->intr_coal_timer_info.max_usec = + vnic_dev_intr_coal_timer_hw_to_usec(vdev, 0xffff); +} + +int vnic_dev_intr_coal_timer_info(struct vnic_dev *vdev) +{ + int wait = 1000; + int err; + + memset(vdev->args, 0, sizeof(vdev->args)); + + err = _vnic_dev_cmd(vdev, CMD_INTR_COAL_CONVERT, wait); + + /* Use defaults when firmware doesn't support the devcmd at all or + * supports it for only specific hardware + */ + if ((err == ERR_ECMDUNKNOWN) || + (!err && !(vdev->args[0] && vdev->args[1] && vdev->args[2]))) { + pr_warning("Using default conversion factor for " + "interrupt coalesce timer\n"); + vnic_dev_intr_coal_timer_info_default(vdev); + return 0; + } + + vdev->intr_coal_timer_info.mul = (u32) vdev->args[0]; + vdev->intr_coal_timer_info.div = (u32) vdev->args[1]; + vdev->intr_coal_timer_info.max_usec = (u32) vdev->args[2]; + + return err; +} + +int vnic_dev_link_status(struct vnic_dev *vdev) +{ + if (!vnic_dev_notify_ready(vdev)) + return 0; + + return vdev->notify_copy.link_state; +} + +u32 vnic_dev_port_speed(struct vnic_dev *vdev) +{ + if (!vnic_dev_notify_ready(vdev)) + return 0; + + return vdev->notify_copy.port_speed; +} + +u32 vnic_dev_msg_lvl(struct vnic_dev *vdev) +{ + if (!vnic_dev_notify_ready(vdev)) + return 0; + + return vdev->notify_copy.msglvl; +} + +u32 vnic_dev_mtu(struct vnic_dev *vdev) +{ + if (!vnic_dev_notify_ready(vdev)) + return 0; + + return vdev->notify_copy.mtu; +} + +void vnic_dev_set_intr_mode(struct vnic_dev *vdev, + enum vnic_dev_intr_mode intr_mode) +{ + vdev->intr_mode = intr_mode; +} + +enum vnic_dev_intr_mode vnic_dev_get_intr_mode( + struct vnic_dev *vdev) +{ + return vdev->intr_mode; +} + +u32 vnic_dev_intr_coal_timer_usec_to_hw(struct vnic_dev *vdev, u32 usec) +{ + return (usec * vdev->intr_coal_timer_info.mul) / + vdev->intr_coal_timer_info.div; +} + +u32 vnic_dev_intr_coal_timer_hw_to_usec(struct vnic_dev *vdev, u32 hw_cycles) +{ + return (hw_cycles * vdev->intr_coal_timer_info.div) / + vdev->intr_coal_timer_info.mul; +} + +u32 vnic_dev_get_intr_coal_timer_max(struct vnic_dev *vdev) +{ + return vdev->intr_coal_timer_info.max_usec; +} + +void vnic_dev_unregister(struct vnic_dev *vdev) +{ + if (vdev) { + if (vdev->notify) + pci_free_consistent(vdev->pdev, + sizeof(struct vnic_devcmd_notify), + vdev->notify, + vdev->notify_pa); + if (vdev->stats) + pci_free_consistent(vdev->pdev, + sizeof(struct vnic_stats), + vdev->stats, vdev->stats_pa); + if (vdev->fw_info) + pci_free_consistent(vdev->pdev, + sizeof(struct vnic_devcmd_fw_info), + vdev->fw_info, vdev->fw_info_pa); + kfree(vdev); + } +} + +struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev, + void *priv, struct pci_dev *pdev, struct vnic_dev_bar *bar, + unsigned int num_bars) +{ + if (!vdev) { + vdev = kzalloc(sizeof(struct vnic_dev), GFP_ATOMIC); + if (!vdev) + return NULL; + } + + vdev->priv = priv; + vdev->pdev = pdev; + + if (vnic_dev_discover_res(vdev, bar, num_bars)) + goto err_out; + + vdev->devcmd = vnic_dev_get_res(vdev, RES_TYPE_DEVCMD, 0); + if (!vdev->devcmd) + goto err_out; + + return vdev; + +err_out: + vnic_dev_unregister(vdev); + return NULL; +} + +int vnic_dev_init_prov2(struct vnic_dev *vdev, u8 *buf, u32 len) +{ + u64 a0, a1 = len; + int wait = 1000; + dma_addr_t prov_pa; + void *prov_buf; + int ret; + + prov_buf = pci_alloc_consistent(vdev->pdev, len, &prov_pa); + if (!prov_buf) + return -ENOMEM; + + memcpy(prov_buf, buf, len); + + a0 = prov_pa; + + ret = vnic_dev_cmd(vdev, CMD_INIT_PROV_INFO2, &a0, &a1, wait); + + pci_free_consistent(vdev->pdev, len, prov_buf, prov_pa); + + return ret; +} + +int vnic_dev_enable2(struct vnic_dev *vdev, int active) +{ + u64 a0, a1 = 0; + int wait = 1000; + + a0 = (active ? CMD_ENABLE2_ACTIVE : 0); + + return vnic_dev_cmd(vdev, CMD_ENABLE2, &a0, &a1, wait); +} + +static int vnic_dev_cmd_status(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd, + int *status) +{ + u64 a0 = cmd, a1 = 0; + int wait = 1000; + int ret; + + ret = vnic_dev_cmd(vdev, CMD_STATUS, &a0, &a1, wait); + if (!ret) + *status = (int)a0; + + return ret; +} + +int vnic_dev_enable2_done(struct vnic_dev *vdev, int *status) +{ + return vnic_dev_cmd_status(vdev, CMD_ENABLE2, status); +} + +int vnic_dev_deinit_done(struct vnic_dev *vdev, int *status) +{ + return vnic_dev_cmd_status(vdev, CMD_DEINIT, status); +} diff --git a/drivers/net/ethernet/cisco/enic/vnic_dev.h b/drivers/net/ethernet/cisco/enic/vnic_dev.h new file mode 100644 index 00000000000..852b698fbe7 --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/vnic_dev.h @@ -0,0 +1,133 @@ +/* + * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#ifndef _VNIC_DEV_H_ +#define _VNIC_DEV_H_ + +#include "vnic_resource.h" +#include "vnic_devcmd.h" + +#ifndef VNIC_PADDR_TARGET +#define VNIC_PADDR_TARGET 0x0000000000000000ULL +#endif + +#ifndef readq +static inline u64 readq(void __iomem *reg) +{ + return (((u64)readl(reg + 0x4UL) << 32) | + (u64)readl(reg)); +} + +static inline void writeq(u64 val, void __iomem *reg) +{ + writel(val & 0xffffffff, reg); + writel(val >> 32, reg + 0x4UL); +} +#endif + +#undef pr_fmt +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +enum vnic_dev_intr_mode { + VNIC_DEV_INTR_MODE_UNKNOWN, + VNIC_DEV_INTR_MODE_INTX, + VNIC_DEV_INTR_MODE_MSI, + VNIC_DEV_INTR_MODE_MSIX, +}; + +struct vnic_dev_bar { + void __iomem *vaddr; + dma_addr_t bus_addr; + unsigned long len; +}; + +struct vnic_dev_ring { + void *descs; + size_t size; + dma_addr_t base_addr; + size_t base_align; + void *descs_unaligned; + size_t size_unaligned; + dma_addr_t base_addr_unaligned; + unsigned int desc_size; + unsigned int desc_count; + unsigned int desc_avail; +}; + +struct vnic_dev; +struct vnic_stats; + +void *vnic_dev_priv(struct vnic_dev *vdev); +unsigned int vnic_dev_get_res_count(struct vnic_dev *vdev, + enum vnic_res_type type); +void __iomem *vnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type, + unsigned int index); +void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring); +int vnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring, + unsigned int desc_count, unsigned int desc_size); +void vnic_dev_free_desc_ring(struct vnic_dev *vdev, + struct vnic_dev_ring *ring); +int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd, + u64 *a0, u64 *a1, int wait); +int vnic_dev_fw_info(struct vnic_dev *vdev, + struct vnic_devcmd_fw_info **fw_info); +int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, unsigned int size, + void *value); +int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats); +int vnic_dev_hang_notify(struct vnic_dev *vdev); +int vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast, + int broadcast, int promisc, int allmulti); +int vnic_dev_add_addr(struct vnic_dev *vdev, u8 *addr); +int vnic_dev_del_addr(struct vnic_dev *vdev, u8 *addr); +int vnic_dev_mac_addr(struct vnic_dev *vdev, u8 *mac_addr); +int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr); +int vnic_dev_notify_unset(struct vnic_dev *vdev); +int vnic_dev_link_status(struct vnic_dev *vdev); +u32 vnic_dev_port_speed(struct vnic_dev *vdev); +u32 vnic_dev_msg_lvl(struct vnic_dev *vdev); +u32 vnic_dev_mtu(struct vnic_dev *vdev); +int vnic_dev_close(struct vnic_dev *vdev); +int vnic_dev_enable_wait(struct vnic_dev *vdev); +int vnic_dev_disable(struct vnic_dev *vdev); +int vnic_dev_open(struct vnic_dev *vdev, int arg); +int vnic_dev_open_done(struct vnic_dev *vdev, int *done); +int vnic_dev_init(struct vnic_dev *vdev, int arg); +int vnic_dev_deinit(struct vnic_dev *vdev); +void vnic_dev_intr_coal_timer_info_default(struct vnic_dev *vdev); +int vnic_dev_intr_coal_timer_info(struct vnic_dev *vdev); +int vnic_dev_hang_reset(struct vnic_dev *vdev, int arg); +int vnic_dev_hang_reset_done(struct vnic_dev *vdev, int *done); +void vnic_dev_set_intr_mode(struct vnic_dev *vdev, + enum vnic_dev_intr_mode intr_mode); +enum vnic_dev_intr_mode vnic_dev_get_intr_mode(struct vnic_dev *vdev); +u32 vnic_dev_intr_coal_timer_usec_to_hw(struct vnic_dev *vdev, u32 usec); +u32 vnic_dev_intr_coal_timer_hw_to_usec(struct vnic_dev *vdev, u32 hw_cycles); +u32 vnic_dev_get_intr_coal_timer_max(struct vnic_dev *vdev); +void vnic_dev_unregister(struct vnic_dev *vdev); +int vnic_dev_set_ig_vlan_rewrite_mode(struct vnic_dev *vdev, + u8 ig_vlan_rewrite_mode); +struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev, + void *priv, struct pci_dev *pdev, struct vnic_dev_bar *bar, + unsigned int num_bars); +int vnic_dev_init_prov2(struct vnic_dev *vdev, u8 *buf, u32 len); +int vnic_dev_enable2(struct vnic_dev *vdev, int active); +int vnic_dev_enable2_done(struct vnic_dev *vdev, int *status); +int vnic_dev_deinit_done(struct vnic_dev *vdev, int *status); + +#endif /* _VNIC_DEV_H_ */ diff --git a/drivers/net/ethernet/cisco/enic/vnic_devcmd.h b/drivers/net/ethernet/cisco/enic/vnic_devcmd.h new file mode 100644 index 00000000000..8025e8808d6 --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/vnic_devcmd.h @@ -0,0 +1,450 @@ +/* + * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#ifndef _VNIC_DEVCMD_H_ +#define _VNIC_DEVCMD_H_ + +#define _CMD_NBITS 14 +#define _CMD_VTYPEBITS 10 +#define _CMD_FLAGSBITS 6 +#define _CMD_DIRBITS 2 + +#define _CMD_NMASK ((1 << _CMD_NBITS)-1) +#define _CMD_VTYPEMASK ((1 << _CMD_VTYPEBITS)-1) +#define _CMD_FLAGSMASK ((1 << _CMD_FLAGSBITS)-1) +#define _CMD_DIRMASK ((1 << _CMD_DIRBITS)-1) + +#define _CMD_NSHIFT 0 +#define _CMD_VTYPESHIFT (_CMD_NSHIFT+_CMD_NBITS) +#define _CMD_FLAGSSHIFT (_CMD_VTYPESHIFT+_CMD_VTYPEBITS) +#define _CMD_DIRSHIFT (_CMD_FLAGSSHIFT+_CMD_FLAGSBITS) + +/* + * Direction bits (from host perspective). + */ +#define _CMD_DIR_NONE 0U +#define _CMD_DIR_WRITE 1U +#define _CMD_DIR_READ 2U +#define _CMD_DIR_RW (_CMD_DIR_WRITE | _CMD_DIR_READ) + +/* + * Flag bits. + */ +#define _CMD_FLAGS_NONE 0U +#define _CMD_FLAGS_NOWAIT 1U + +/* + * vNIC type bits. + */ +#define _CMD_VTYPE_NONE 0U +#define _CMD_VTYPE_ENET 1U +#define _CMD_VTYPE_FC 2U +#define _CMD_VTYPE_SCSI 4U +#define _CMD_VTYPE_ALL (_CMD_VTYPE_ENET | _CMD_VTYPE_FC | _CMD_VTYPE_SCSI) + +/* + * Used to create cmds.. +*/ +#define _CMDCF(dir, flags, vtype, nr) \ + (((dir) << _CMD_DIRSHIFT) | \ + ((flags) << _CMD_FLAGSSHIFT) | \ + ((vtype) << _CMD_VTYPESHIFT) | \ + ((nr) << _CMD_NSHIFT)) +#define _CMDC(dir, vtype, nr) _CMDCF(dir, 0, vtype, nr) +#define _CMDCNW(dir, vtype, nr) _CMDCF(dir, _CMD_FLAGS_NOWAIT, vtype, nr) + +/* + * Used to decode cmds.. +*/ +#define _CMD_DIR(cmd) (((cmd) >> _CMD_DIRSHIFT) & _CMD_DIRMASK) +#define _CMD_FLAGS(cmd) (((cmd) >> _CMD_FLAGSSHIFT) & _CMD_FLAGSMASK) +#define _CMD_VTYPE(cmd) (((cmd) >> _CMD_VTYPESHIFT) & _CMD_VTYPEMASK) +#define _CMD_N(cmd) (((cmd) >> _CMD_NSHIFT) & _CMD_NMASK) + +enum vnic_devcmd_cmd { + CMD_NONE = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_NONE, 0), + + /* + * mcpu fw info in mem: + * in: + * (u64)a0=paddr to struct vnic_devcmd_fw_info + * action: + * Fills in struct vnic_devcmd_fw_info (128 bytes) + * note: + * An old definition of CMD_MCPU_FW_INFO + */ + CMD_MCPU_FW_INFO_OLD = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 1), + + /* + * mcpu fw info in mem: + * in: + * (u64)a0=paddr to struct vnic_devcmd_fw_info + * (u16)a1=size of the structure + * out: + * (u16)a1=0 for in:a1 = 0, + * data size actually written for other values. + * action: + * Fills in first 128 bytes of vnic_devcmd_fw_info for in:a1 = 0, + * first in:a1 bytes for 0 < in:a1 <= 132, + * 132 bytes for other values of in:a1. + * note: + * CMD_MCPU_FW_INFO and CMD_MCPU_FW_INFO_OLD have the same enum 1 + * for source compatibility. + */ + CMD_MCPU_FW_INFO = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 1), + + /* dev-specific block member: + * in: (u16)a0=offset,(u8)a1=size + * out: a0=value */ + CMD_DEV_SPEC = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 2), + + /* stats clear */ + CMD_STATS_CLEAR = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 3), + + /* stats dump in mem: (u64)a0=paddr to stats area, + * (u16)a1=sizeof stats area */ + CMD_STATS_DUMP = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 4), + + /* set Rx packet filter: (u32)a0=filters (see CMD_PFILTER_*) */ + CMD_PACKET_FILTER = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 7), + + /* set Rx packet filter for all: (u32)a0=filters (see CMD_PFILTER_*) */ + CMD_PACKET_FILTER_ALL = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 7), + + /* hang detection notification */ + CMD_HANG_NOTIFY = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 8), + + /* MAC address in (u48)a0 */ + CMD_MAC_ADDR = _CMDC(_CMD_DIR_READ, + _CMD_VTYPE_ENET | _CMD_VTYPE_FC, 9), + + /* add addr from (u48)a0 */ + CMD_ADDR_ADD = _CMDCNW(_CMD_DIR_WRITE, + _CMD_VTYPE_ENET | _CMD_VTYPE_FC, 12), + + /* del addr from (u48)a0 */ + CMD_ADDR_DEL = _CMDCNW(_CMD_DIR_WRITE, + _CMD_VTYPE_ENET | _CMD_VTYPE_FC, 13), + + /* add VLAN id in (u16)a0 */ + CMD_VLAN_ADD = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 14), + + /* del VLAN id in (u16)a0 */ + CMD_VLAN_DEL = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 15), + + /* nic_cfg in (u32)a0 */ + CMD_NIC_CFG = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 16), + + /* union vnic_rss_key in mem: (u64)a0=paddr, (u16)a1=len */ + CMD_RSS_KEY = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 17), + + /* union vnic_rss_cpu in mem: (u64)a0=paddr, (u16)a1=len */ + CMD_RSS_CPU = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 18), + + /* initiate softreset */ + CMD_SOFT_RESET = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 19), + + /* softreset status: + * out: a0=0 reset complete, a0=1 reset in progress */ + CMD_SOFT_RESET_STATUS = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 20), + + /* set struct vnic_devcmd_notify buffer in mem: + * in: + * (u64)a0=paddr to notify (set paddr=0 to unset) + * (u32)a1 & 0x00000000ffffffff=sizeof(struct vnic_devcmd_notify) + * (u16)a1 & 0x0000ffff00000000=intr num (-1 for no intr) + * out: + * (u32)a1 = effective size + */ + CMD_NOTIFY = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 21), + + /* UNDI API: (u64)a0=paddr to s_PXENV_UNDI_ struct, + * (u8)a1=PXENV_UNDI_xxx */ + CMD_UNDI = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 22), + + /* initiate open sequence (u32)a0=flags (see CMD_OPENF_*) */ + CMD_OPEN = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 23), + + /* open status: + * out: a0=0 open complete, a0=1 open in progress */ + CMD_OPEN_STATUS = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 24), + + /* close vnic */ + CMD_CLOSE = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 25), + + /* initialize virtual link: (u32)a0=flags (see CMD_INITF_*) */ +/***** Replaced by CMD_INIT *****/ + CMD_INIT_v1 = _CMDCNW(_CMD_DIR_READ, _CMD_VTYPE_ALL, 26), + + /* variant of CMD_INIT, with provisioning info + * (u64)a0=paddr of vnic_devcmd_provinfo + * (u32)a1=sizeof provision info */ + CMD_INIT_PROV_INFO = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 27), + + /* enable virtual link */ + CMD_ENABLE = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 28), + + /* enable virtual link, waiting variant. */ + CMD_ENABLE_WAIT = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 28), + + /* disable virtual link */ + CMD_DISABLE = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 29), + + /* stats dump sum of all vnic stats on same uplink in mem: + * (u64)a0=paddr + * (u16)a1=sizeof stats area */ + CMD_STATS_DUMP_ALL = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 30), + + /* init status: + * out: a0=0 init complete, a0=1 init in progress + * if a0=0, a1=errno */ + CMD_INIT_STATUS = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 31), + + /* INT13 API: (u64)a0=paddr to vnic_int13_params struct + * (u32)a1=INT13_CMD_xxx */ + CMD_INT13 = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_FC, 32), + + /* logical uplink enable/disable: (u64)a0: 0/1=disable/enable */ + CMD_LOGICAL_UPLINK = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 33), + + /* undo initialize of virtual link */ + CMD_DEINIT = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 34), + + /* initialize virtual link: (u32)a0=flags (see CMD_INITF_*) */ + CMD_INIT = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 35), + + /* check fw capability of a cmd: + * in: (u32)a0=cmd + * out: (u32)a0=errno, 0:valid cmd, a1=supported VNIC_STF_* bits */ + CMD_CAPABILITY = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 36), + + /* persistent binding info + * in: (u64)a0=paddr of arg + * (u32)a1=CMD_PERBI_XXX */ + CMD_PERBI = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_FC, 37), + + /* Interrupt Assert Register functionality + * in: (u16)a0=interrupt number to assert + */ + CMD_IAR = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 38), + + /* initiate hangreset, like softreset after hang detected */ + CMD_HANG_RESET = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 39), + + /* hangreset status: + * out: a0=0 reset complete, a0=1 reset in progress */ + CMD_HANG_RESET_STATUS = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 40), + + /* + * Set hw ingress packet vlan rewrite mode: + * in: (u32)a0=new vlan rewrite mode + * out: (u32)a0=old vlan rewrite mode */ + CMD_IG_VLAN_REWRITE_MODE = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ENET, 41), + + /* + * in: (u16)a0=bdf of target vnic + * (u32)a1=cmd to proxy + * a2-a15=args to cmd in a1 + * out: (u32)a0=status of proxied cmd + * a1-a15=out args of proxied cmd */ + CMD_PROXY_BY_BDF = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 42), + + /* + * As for BY_BDF except a0 is index of hvnlink subordinate vnic + * or SR-IOV virtual vnic + */ + CMD_PROXY_BY_INDEX = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 43), + + /* + * For HPP toggle: + * adapter-info-get + * in: (u64)a0=phsical address of buffer passed in from caller. + * (u16)a1=size of buffer specified in a0. + * out: (u64)a0=phsical address of buffer passed in from caller. + * (u16)a1=actual bytes from VIF-CONFIG-INFO TLV, or + * 0 if no VIF-CONFIG-INFO TLV was ever received. */ + CMD_CONFIG_INFO_GET = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 44), + + /* init_prov_info2: + * Variant of CMD_INIT_PROV_INFO, where it will not try to enable + * the vnic until CMD_ENABLE2 is issued. + * (u64)a0=paddr of vnic_devcmd_provinfo + * (u32)a1=sizeof provision info */ + CMD_INIT_PROV_INFO2 = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 47), + + /* enable2: + * (u32)a0=0 ==> standby + * =CMD_ENABLE2_ACTIVE ==> active + */ + CMD_ENABLE2 = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 48), + + /* + * cmd_status: + * Returns the status of the specified command + * Input: + * a0 = command for which status is being queried. + * Possible values are: + * CMD_SOFT_RESET + * CMD_HANG_RESET + * CMD_OPEN + * CMD_INIT + * CMD_INIT_PROV_INFO + * CMD_DEINIT + * CMD_INIT_PROV_INFO2 + * CMD_ENABLE2 + * Output: + * if status == STAT_ERROR + * a0 = ERR_ENOTSUPPORTED - status for command in a0 is + * not supported + * if status == STAT_NONE + * a0 = status of the devcmd specified in a0 as follows. + * ERR_SUCCESS - command in a0 completed successfully + * ERR_EINPROGRESS - command in a0 is still in progress + */ + CMD_STATUS = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 49), + + /* + * Returns interrupt coalescing timer conversion factors. + * After calling this devcmd, ENIC driver can convert + * interrupt coalescing timer in usec into CPU cycles as follows: + * + * intr_timer_cycles = intr_timer_usec * multiplier / divisor + * + * Interrupt coalescing timer in usecs can be obtained from + * CPU cycles as follows: + * + * intr_timer_usec = intr_timer_cycles * divisor / multiplier + * + * in: none + * out: (u32)a0 = multiplier + * (u32)a1 = divisor + * (u32)a2 = maximum timer value in usec + */ + CMD_INTR_COAL_CONVERT = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 50), +}; + +/* CMD_ENABLE2 flags */ +#define CMD_ENABLE2_ACTIVE 0x1 + +/* flags for CMD_OPEN */ +#define CMD_OPENF_OPROM 0x1 /* open coming from option rom */ + +/* flags for CMD_INIT */ +#define CMD_INITF_DEFAULT_MAC 0x1 /* init with default mac addr */ + +/* flags for CMD_PACKET_FILTER */ +#define CMD_PFILTER_DIRECTED 0x01 +#define CMD_PFILTER_MULTICAST 0x02 +#define CMD_PFILTER_BROADCAST 0x04 +#define CMD_PFILTER_PROMISCUOUS 0x08 +#define CMD_PFILTER_ALL_MULTICAST 0x10 + +/* rewrite modes for CMD_IG_VLAN_REWRITE_MODE */ +#define IG_VLAN_REWRITE_MODE_DEFAULT_TRUNK 0 +#define IG_VLAN_REWRITE_MODE_UNTAG_DEFAULT_VLAN 1 +#define IG_VLAN_REWRITE_MODE_PRIORITY_TAG_DEFAULT_VLAN 2 +#define IG_VLAN_REWRITE_MODE_PASS_THRU 3 + +enum vnic_devcmd_status { + STAT_NONE = 0, + STAT_BUSY = 1 << 0, /* cmd in progress */ + STAT_ERROR = 1 << 1, /* last cmd caused error (code in a0) */ +}; + +enum vnic_devcmd_error { + ERR_SUCCESS = 0, + ERR_EINVAL = 1, + ERR_EFAULT = 2, + ERR_EPERM = 3, + ERR_EBUSY = 4, + ERR_ECMDUNKNOWN = 5, + ERR_EBADSTATE = 6, + ERR_ENOMEM = 7, + ERR_ETIMEDOUT = 8, + ERR_ELINKDOWN = 9, + ERR_EMAXRES = 10, + ERR_ENOTSUPPORTED = 11, + ERR_EINPROGRESS = 12, +}; + +/* + * note: hw_version and asic_rev refer to the same thing, + * but have different formats. hw_version is + * a 32-byte string (e.g. "A2") and asic_rev is + * a 16-bit integer (e.g. 0xA2). + */ +struct vnic_devcmd_fw_info { + char fw_version[32]; + char fw_build[32]; + char hw_version[32]; + char hw_serial_number[32]; + u16 asic_type; + u16 asic_rev; +}; + +struct vnic_devcmd_notify { + u32 csum; /* checksum over following words */ + + u32 link_state; /* link up == 1 */ + u32 port_speed; /* effective port speed (rate limit) */ + u32 mtu; /* MTU */ + u32 msglvl; /* requested driver msg lvl */ + u32 uif; /* uplink interface */ + u32 status; /* status bits (see VNIC_STF_*) */ + u32 error; /* error code (see ERR_*) for first ERR */ + u32 link_down_cnt; /* running count of link down transitions */ + u32 perbi_rebuild_cnt; /* running count of perbi rebuilds */ +}; +#define VNIC_STF_FATAL_ERR 0x0001 /* fatal fw error */ +#define VNIC_STF_STD_PAUSE 0x0002 /* standard link-level pause on */ +#define VNIC_STF_PFC_PAUSE 0x0004 /* priority flow control pause on */ +/* all supported status flags */ +#define VNIC_STF_ALL (VNIC_STF_FATAL_ERR |\ + VNIC_STF_STD_PAUSE |\ + VNIC_STF_PFC_PAUSE |\ + 0) + +struct vnic_devcmd_provinfo { + u8 oui[3]; + u8 type; + u8 data[0]; +}; + +/* + * Writing cmd register causes STAT_BUSY to get set in status register. + * When cmd completes, STAT_BUSY will be cleared. + * + * If cmd completed successfully STAT_ERROR will be clear + * and args registers contain cmd-specific results. + * + * If cmd error, STAT_ERROR will be set and args[0] contains error code. + * + * status register is read-only. While STAT_BUSY is set, + * all other register contents are read-only. + */ + +/* Make sizeof(vnic_devcmd) a power-of-2 for I/O BAR. */ +#define VNIC_DEVCMD_NARGS 15 +struct vnic_devcmd { + u32 status; /* RO */ + u32 cmd; /* RW */ + u64 args[VNIC_DEVCMD_NARGS]; /* RW cmd args (little-endian) */ +}; + +#endif /* _VNIC_DEVCMD_H_ */ diff --git a/drivers/net/ethernet/cisco/enic/vnic_enet.h b/drivers/net/ethernet/cisco/enic/vnic_enet.h new file mode 100644 index 00000000000..609542848e0 --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/vnic_enet.h @@ -0,0 +1,57 @@ +/* + * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#ifndef _VNIC_ENIC_H_ +#define _VNIC_ENIC_H_ + +/* Device-specific region: enet configuration */ +struct vnic_enet_config { + u32 flags; + u32 wq_desc_count; + u32 rq_desc_count; + u16 mtu; + u16 intr_timer_deprecated; + u8 intr_timer_type; + u8 intr_mode; + char devname[16]; + u32 intr_timer_usec; + u16 loop_tag; +}; + +#define VENETF_TSO 0x1 /* TSO enabled */ +#define VENETF_LRO 0x2 /* LRO enabled */ +#define VENETF_RXCSUM 0x4 /* RX csum enabled */ +#define VENETF_TXCSUM 0x8 /* TX csum enabled */ +#define VENETF_RSS 0x10 /* RSS enabled */ +#define VENETF_RSSHASH_IPV4 0x20 /* Hash on IPv4 fields */ +#define VENETF_RSSHASH_TCPIPV4 0x40 /* Hash on TCP + IPv4 fields */ +#define VENETF_RSSHASH_IPV6 0x80 /* Hash on IPv6 fields */ +#define VENETF_RSSHASH_TCPIPV6 0x100 /* Hash on TCP + IPv6 fields */ +#define VENETF_RSSHASH_IPV6_EX 0x200 /* Hash on IPv6 extended fields */ +#define VENETF_RSSHASH_TCPIPV6_EX 0x400 /* Hash on TCP + IPv6 ext. fields */ +#define VENETF_LOOP 0x800 /* Loopback enabled */ + +#define VENET_INTR_TYPE_MIN 0 /* Timer specs min interrupt spacing */ +#define VENET_INTR_TYPE_IDLE 1 /* Timer specs idle time before irq */ + +#define VENET_INTR_MODE_ANY 0 /* Try MSI-X, then MSI, then INTx */ +#define VENET_INTR_MODE_MSI 1 /* Try MSI then INTx */ +#define VENET_INTR_MODE_INTX 2 /* Try INTx only */ + +#endif /* _VNIC_ENIC_H_ */ diff --git a/drivers/net/ethernet/cisco/enic/vnic_intr.c b/drivers/net/ethernet/cisco/enic/vnic_intr.c new file mode 100644 index 00000000000..0ca107f7bc8 --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/vnic_intr.c @@ -0,0 +1,68 @@ +/* + * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#include +#include +#include +#include +#include + +#include "vnic_dev.h" +#include "vnic_intr.h" + +void vnic_intr_free(struct vnic_intr *intr) +{ + intr->ctrl = NULL; +} + +int vnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr, + unsigned int index) +{ + intr->index = index; + intr->vdev = vdev; + + intr->ctrl = vnic_dev_get_res(vdev, RES_TYPE_INTR_CTRL, index); + if (!intr->ctrl) { + pr_err("Failed to hook INTR[%d].ctrl resource\n", index); + return -EINVAL; + } + + return 0; +} + +void vnic_intr_init(struct vnic_intr *intr, u32 coalescing_timer, + unsigned int coalescing_type, unsigned int mask_on_assertion) +{ + vnic_intr_coalescing_timer_set(intr, coalescing_timer); + iowrite32(coalescing_type, &intr->ctrl->coalescing_type); + iowrite32(mask_on_assertion, &intr->ctrl->mask_on_assertion); + iowrite32(0, &intr->ctrl->int_credits); +} + +void vnic_intr_coalescing_timer_set(struct vnic_intr *intr, + u32 coalescing_timer) +{ + iowrite32(vnic_dev_intr_coal_timer_usec_to_hw(intr->vdev, + coalescing_timer), &intr->ctrl->coalescing_timer); +} + +void vnic_intr_clean(struct vnic_intr *intr) +{ + iowrite32(0, &intr->ctrl->int_credits); +} diff --git a/drivers/net/ethernet/cisco/enic/vnic_intr.h b/drivers/net/ethernet/cisco/enic/vnic_intr.h new file mode 100644 index 00000000000..2b163639229 --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/vnic_intr.h @@ -0,0 +1,111 @@ +/* + * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#ifndef _VNIC_INTR_H_ +#define _VNIC_INTR_H_ + +#include + +#include "vnic_dev.h" + +#define VNIC_INTR_TIMER_TYPE_ABS 0 +#define VNIC_INTR_TIMER_TYPE_QUIET 1 + +/* Interrupt control */ +struct vnic_intr_ctrl { + u32 coalescing_timer; /* 0x00 */ + u32 pad0; + u32 coalescing_value; /* 0x08 */ + u32 pad1; + u32 coalescing_type; /* 0x10 */ + u32 pad2; + u32 mask_on_assertion; /* 0x18 */ + u32 pad3; + u32 mask; /* 0x20 */ + u32 pad4; + u32 int_credits; /* 0x28 */ + u32 pad5; + u32 int_credit_return; /* 0x30 */ + u32 pad6; +}; + +struct vnic_intr { + unsigned int index; + struct vnic_dev *vdev; + struct vnic_intr_ctrl __iomem *ctrl; /* memory-mapped */ +}; + +static inline void vnic_intr_unmask(struct vnic_intr *intr) +{ + iowrite32(0, &intr->ctrl->mask); +} + +static inline void vnic_intr_mask(struct vnic_intr *intr) +{ + iowrite32(1, &intr->ctrl->mask); +} + +static inline int vnic_intr_masked(struct vnic_intr *intr) +{ + return ioread32(&intr->ctrl->mask); +} + +static inline void vnic_intr_return_credits(struct vnic_intr *intr, + unsigned int credits, int unmask, int reset_timer) +{ +#define VNIC_INTR_UNMASK_SHIFT 16 +#define VNIC_INTR_RESET_TIMER_SHIFT 17 + + u32 int_credit_return = (credits & 0xffff) | + (unmask ? (1 << VNIC_INTR_UNMASK_SHIFT) : 0) | + (reset_timer ? (1 << VNIC_INTR_RESET_TIMER_SHIFT) : 0); + + iowrite32(int_credit_return, &intr->ctrl->int_credit_return); +} + +static inline unsigned int vnic_intr_credits(struct vnic_intr *intr) +{ + return ioread32(&intr->ctrl->int_credits); +} + +static inline void vnic_intr_return_all_credits(struct vnic_intr *intr) +{ + unsigned int credits = vnic_intr_credits(intr); + int unmask = 1; + int reset_timer = 1; + + vnic_intr_return_credits(intr, credits, unmask, reset_timer); +} + +static inline u32 vnic_intr_legacy_pba(u32 __iomem *legacy_pba) +{ + /* read PBA without clearing */ + return ioread32(legacy_pba); +} + +void vnic_intr_free(struct vnic_intr *intr); +int vnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr, + unsigned int index); +void vnic_intr_init(struct vnic_intr *intr, u32 coalescing_timer, + unsigned int coalescing_type, unsigned int mask_on_assertion); +void vnic_intr_coalescing_timer_set(struct vnic_intr *intr, + u32 coalescing_timer); +void vnic_intr_clean(struct vnic_intr *intr); + +#endif /* _VNIC_INTR_H_ */ diff --git a/drivers/net/ethernet/cisco/enic/vnic_nic.h b/drivers/net/ethernet/cisco/enic/vnic_nic.h new file mode 100644 index 00000000000..995a50dd4c9 --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/vnic_nic.h @@ -0,0 +1,72 @@ +/* + * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#ifndef _VNIC_NIC_H_ +#define _VNIC_NIC_H_ + +#define NIC_CFG_RSS_DEFAULT_CPU_MASK_FIELD 0xffUL +#define NIC_CFG_RSS_DEFAULT_CPU_SHIFT 0 +#define NIC_CFG_RSS_HASH_TYPE (0xffUL << 8) +#define NIC_CFG_RSS_HASH_TYPE_MASK_FIELD 0xffUL +#define NIC_CFG_RSS_HASH_TYPE_SHIFT 8 +#define NIC_CFG_RSS_HASH_BITS (7UL << 16) +#define NIC_CFG_RSS_HASH_BITS_MASK_FIELD 7UL +#define NIC_CFG_RSS_HASH_BITS_SHIFT 16 +#define NIC_CFG_RSS_BASE_CPU (7UL << 19) +#define NIC_CFG_RSS_BASE_CPU_MASK_FIELD 7UL +#define NIC_CFG_RSS_BASE_CPU_SHIFT 19 +#define NIC_CFG_RSS_ENABLE (1UL << 22) +#define NIC_CFG_RSS_ENABLE_MASK_FIELD 1UL +#define NIC_CFG_RSS_ENABLE_SHIFT 22 +#define NIC_CFG_TSO_IPID_SPLIT_EN (1UL << 23) +#define NIC_CFG_TSO_IPID_SPLIT_EN_MASK_FIELD 1UL +#define NIC_CFG_TSO_IPID_SPLIT_EN_SHIFT 23 +#define NIC_CFG_IG_VLAN_STRIP_EN (1UL << 24) +#define NIC_CFG_IG_VLAN_STRIP_EN_MASK_FIELD 1UL +#define NIC_CFG_IG_VLAN_STRIP_EN_SHIFT 24 + +#define NIC_CFG_RSS_HASH_TYPE_IPV4 (1 << 1) +#define NIC_CFG_RSS_HASH_TYPE_TCP_IPV4 (1 << 2) +#define NIC_CFG_RSS_HASH_TYPE_IPV6 (1 << 3) +#define NIC_CFG_RSS_HASH_TYPE_TCP_IPV6 (1 << 4) +#define NIC_CFG_RSS_HASH_TYPE_IPV6_EX (1 << 5) +#define NIC_CFG_RSS_HASH_TYPE_TCP_IPV6_EX (1 << 6) + +static inline void vnic_set_nic_cfg(u32 *nic_cfg, + u8 rss_default_cpu, u8 rss_hash_type, + u8 rss_hash_bits, u8 rss_base_cpu, + u8 rss_enable, u8 tso_ipid_split_en, + u8 ig_vlan_strip_en) +{ + *nic_cfg = (rss_default_cpu & NIC_CFG_RSS_DEFAULT_CPU_MASK_FIELD) | + ((rss_hash_type & NIC_CFG_RSS_HASH_TYPE_MASK_FIELD) + << NIC_CFG_RSS_HASH_TYPE_SHIFT) | + ((rss_hash_bits & NIC_CFG_RSS_HASH_BITS_MASK_FIELD) + << NIC_CFG_RSS_HASH_BITS_SHIFT) | + ((rss_base_cpu & NIC_CFG_RSS_BASE_CPU_MASK_FIELD) + << NIC_CFG_RSS_BASE_CPU_SHIFT) | + ((rss_enable & NIC_CFG_RSS_ENABLE_MASK_FIELD) + << NIC_CFG_RSS_ENABLE_SHIFT) | + ((tso_ipid_split_en & NIC_CFG_TSO_IPID_SPLIT_EN_MASK_FIELD) + << NIC_CFG_TSO_IPID_SPLIT_EN_SHIFT) | + ((ig_vlan_strip_en & NIC_CFG_IG_VLAN_STRIP_EN_MASK_FIELD) + << NIC_CFG_IG_VLAN_STRIP_EN_SHIFT); +} + +#endif /* _VNIC_NIC_H_ */ diff --git a/drivers/net/ethernet/cisco/enic/vnic_resource.h b/drivers/net/ethernet/cisco/enic/vnic_resource.h new file mode 100644 index 00000000000..e0a73f1ca6f --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/vnic_resource.h @@ -0,0 +1,76 @@ +/* + * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#ifndef _VNIC_RESOURCE_H_ +#define _VNIC_RESOURCE_H_ + +#define VNIC_RES_MAGIC 0x766E6963L /* 'vnic' */ +#define VNIC_RES_VERSION 0x00000000L +#define MGMTVNIC_MAGIC 0x544d474dL /* 'MGMT' */ +#define MGMTVNIC_VERSION 0x00000000L + +/* The MAC address assigned to the CFG vNIC is fixed. */ +#define MGMTVNIC_MAC { 0x02, 0x00, 0x54, 0x4d, 0x47, 0x4d } + +/* vNIC resource types */ +enum vnic_res_type { + RES_TYPE_EOL, /* End-of-list */ + RES_TYPE_WQ, /* Work queues */ + RES_TYPE_RQ, /* Receive queues */ + RES_TYPE_CQ, /* Completion queues */ + RES_TYPE_RSVD1, + RES_TYPE_NIC_CFG, /* Enet NIC config registers */ + RES_TYPE_RSVD2, + RES_TYPE_RSVD3, + RES_TYPE_RSVD4, + RES_TYPE_RSVD5, + RES_TYPE_INTR_CTRL, /* Interrupt ctrl table */ + RES_TYPE_INTR_TABLE, /* MSI/MSI-X Interrupt table */ + RES_TYPE_INTR_PBA, /* MSI/MSI-X PBA table */ + RES_TYPE_INTR_PBA_LEGACY, /* Legacy intr status */ + RES_TYPE_RSVD6, + RES_TYPE_RSVD7, + RES_TYPE_DEVCMD, /* Device command region */ + RES_TYPE_PASS_THRU_PAGE, /* Pass-thru page */ + + RES_TYPE_MAX, /* Count of resource types */ +}; + +struct vnic_resource_header { + u32 magic; + u32 version; +}; + +struct mgmt_barmap_hdr { + u32 magic; /* magic number */ + u32 version; /* header format version */ + u16 lif; /* loopback lif for mgmt frames */ + u16 pci_slot; /* installed pci slot */ + char serial[16]; /* card serial number */ +}; + +struct vnic_resource { + u8 type; + u8 bar; + u8 pad[2]; + u32 bar_offset; + u32 count; +}; + +#endif /* _VNIC_RESOURCE_H_ */ diff --git a/drivers/net/ethernet/cisco/enic/vnic_rq.c b/drivers/net/ethernet/cisco/enic/vnic_rq.c new file mode 100644 index 00000000000..34105e0951a --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/vnic_rq.c @@ -0,0 +1,221 @@ +/* + * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#include +#include +#include +#include +#include +#include + +#include "vnic_dev.h" +#include "vnic_rq.h" + +static int vnic_rq_alloc_bufs(struct vnic_rq *rq) +{ + struct vnic_rq_buf *buf; + struct vnic_dev *vdev; + unsigned int i, j, count = rq->ring.desc_count; + unsigned int blks = VNIC_RQ_BUF_BLKS_NEEDED(count); + + vdev = rq->vdev; + + for (i = 0; i < blks; i++) { + rq->bufs[i] = kzalloc(VNIC_RQ_BUF_BLK_SZ(count), GFP_ATOMIC); + if (!rq->bufs[i]) { + pr_err("Failed to alloc rq_bufs\n"); + return -ENOMEM; + } + } + + for (i = 0; i < blks; i++) { + buf = rq->bufs[i]; + for (j = 0; j < VNIC_RQ_BUF_BLK_ENTRIES(count); j++) { + buf->index = i * VNIC_RQ_BUF_BLK_ENTRIES(count) + j; + buf->desc = (u8 *)rq->ring.descs + + rq->ring.desc_size * buf->index; + if (buf->index + 1 == count) { + buf->next = rq->bufs[0]; + break; + } else if (j + 1 == VNIC_RQ_BUF_BLK_ENTRIES(count)) { + buf->next = rq->bufs[i + 1]; + } else { + buf->next = buf + 1; + buf++; + } + } + } + + rq->to_use = rq->to_clean = rq->bufs[0]; + + return 0; +} + +void vnic_rq_free(struct vnic_rq *rq) +{ + struct vnic_dev *vdev; + unsigned int i; + + vdev = rq->vdev; + + vnic_dev_free_desc_ring(vdev, &rq->ring); + + for (i = 0; i < VNIC_RQ_BUF_BLKS_MAX; i++) { + if (rq->bufs[i]) { + kfree(rq->bufs[i]); + rq->bufs[i] = NULL; + } + } + + rq->ctrl = NULL; +} + +int vnic_rq_alloc(struct vnic_dev *vdev, struct vnic_rq *rq, unsigned int index, + unsigned int desc_count, unsigned int desc_size) +{ + int err; + + rq->index = index; + rq->vdev = vdev; + + rq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_RQ, index); + if (!rq->ctrl) { + pr_err("Failed to hook RQ[%d] resource\n", index); + return -EINVAL; + } + + vnic_rq_disable(rq); + + err = vnic_dev_alloc_desc_ring(vdev, &rq->ring, desc_count, desc_size); + if (err) + return err; + + err = vnic_rq_alloc_bufs(rq); + if (err) { + vnic_rq_free(rq); + return err; + } + + return 0; +} + +static void vnic_rq_init_start(struct vnic_rq *rq, unsigned int cq_index, + unsigned int fetch_index, unsigned int posted_index, + unsigned int error_interrupt_enable, + unsigned int error_interrupt_offset) +{ + u64 paddr; + unsigned int count = rq->ring.desc_count; + + paddr = (u64)rq->ring.base_addr | VNIC_PADDR_TARGET; + writeq(paddr, &rq->ctrl->ring_base); + iowrite32(count, &rq->ctrl->ring_size); + iowrite32(cq_index, &rq->ctrl->cq_index); + iowrite32(error_interrupt_enable, &rq->ctrl->error_interrupt_enable); + iowrite32(error_interrupt_offset, &rq->ctrl->error_interrupt_offset); + iowrite32(0, &rq->ctrl->dropped_packet_count); + iowrite32(0, &rq->ctrl->error_status); + iowrite32(fetch_index, &rq->ctrl->fetch_index); + iowrite32(posted_index, &rq->ctrl->posted_index); + + rq->to_use = rq->to_clean = + &rq->bufs[fetch_index / VNIC_RQ_BUF_BLK_ENTRIES(count)] + [fetch_index % VNIC_RQ_BUF_BLK_ENTRIES(count)]; +} + +void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index, + unsigned int error_interrupt_enable, + unsigned int error_interrupt_offset) +{ + u32 fetch_index; + + /* Use current fetch_index as the ring starting point */ + fetch_index = ioread32(&rq->ctrl->fetch_index); + + if (fetch_index == 0xFFFFFFFF) { /* check for hardware gone */ + /* Hardware surprise removal: reset fetch_index */ + fetch_index = 0; + } + + vnic_rq_init_start(rq, cq_index, + fetch_index, fetch_index, + error_interrupt_enable, + error_interrupt_offset); +} + +unsigned int vnic_rq_error_status(struct vnic_rq *rq) +{ + return ioread32(&rq->ctrl->error_status); +} + +void vnic_rq_enable(struct vnic_rq *rq) +{ + iowrite32(1, &rq->ctrl->enable); +} + +int vnic_rq_disable(struct vnic_rq *rq) +{ + unsigned int wait; + + iowrite32(0, &rq->ctrl->enable); + + /* Wait for HW to ACK disable request */ + for (wait = 0; wait < 1000; wait++) { + if (!(ioread32(&rq->ctrl->running))) + return 0; + udelay(10); + } + + pr_err("Failed to disable RQ[%d]\n", rq->index); + + return -ETIMEDOUT; +} + +void vnic_rq_clean(struct vnic_rq *rq, + void (*buf_clean)(struct vnic_rq *rq, struct vnic_rq_buf *buf)) +{ + struct vnic_rq_buf *buf; + u32 fetch_index; + unsigned int count = rq->ring.desc_count; + + buf = rq->to_clean; + + while (vnic_rq_desc_used(rq) > 0) { + + (*buf_clean)(rq, buf); + + buf = rq->to_clean = buf->next; + rq->ring.desc_avail++; + } + + /* Use current fetch_index as the ring starting point */ + fetch_index = ioread32(&rq->ctrl->fetch_index); + + if (fetch_index == 0xFFFFFFFF) { /* check for hardware gone */ + /* Hardware surprise removal: reset fetch_index */ + fetch_index = 0; + } + rq->to_use = rq->to_clean = + &rq->bufs[fetch_index / VNIC_RQ_BUF_BLK_ENTRIES(count)] + [fetch_index % VNIC_RQ_BUF_BLK_ENTRIES(count)]; + iowrite32(fetch_index, &rq->ctrl->posted_index); + + vnic_dev_clear_desc_ring(&rq->ring); +} + diff --git a/drivers/net/ethernet/cisco/enic/vnic_rq.h b/drivers/net/ethernet/cisco/enic/vnic_rq.h new file mode 100644 index 00000000000..2056586f4d4 --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/vnic_rq.h @@ -0,0 +1,209 @@ +/* + * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#ifndef _VNIC_RQ_H_ +#define _VNIC_RQ_H_ + +#include + +#include "vnic_dev.h" +#include "vnic_cq.h" + +/* Receive queue control */ +struct vnic_rq_ctrl { + u64 ring_base; /* 0x00 */ + u32 ring_size; /* 0x08 */ + u32 pad0; + u32 posted_index; /* 0x10 */ + u32 pad1; + u32 cq_index; /* 0x18 */ + u32 pad2; + u32 enable; /* 0x20 */ + u32 pad3; + u32 running; /* 0x28 */ + u32 pad4; + u32 fetch_index; /* 0x30 */ + u32 pad5; + u32 error_interrupt_enable; /* 0x38 */ + u32 pad6; + u32 error_interrupt_offset; /* 0x40 */ + u32 pad7; + u32 error_status; /* 0x48 */ + u32 pad8; + u32 dropped_packet_count; /* 0x50 */ + u32 pad9; + u32 dropped_packet_count_rc; /* 0x58 */ + u32 pad10; +}; + +/* Break the vnic_rq_buf allocations into blocks of 32/64 entries */ +#define VNIC_RQ_BUF_MIN_BLK_ENTRIES 32 +#define VNIC_RQ_BUF_DFLT_BLK_ENTRIES 64 +#define VNIC_RQ_BUF_BLK_ENTRIES(entries) \ + ((unsigned int)((entries < VNIC_RQ_BUF_DFLT_BLK_ENTRIES) ? \ + VNIC_RQ_BUF_MIN_BLK_ENTRIES : VNIC_RQ_BUF_DFLT_BLK_ENTRIES)) +#define VNIC_RQ_BUF_BLK_SZ(entries) \ + (VNIC_RQ_BUF_BLK_ENTRIES(entries) * sizeof(struct vnic_rq_buf)) +#define VNIC_RQ_BUF_BLKS_NEEDED(entries) \ + DIV_ROUND_UP(entries, VNIC_RQ_BUF_BLK_ENTRIES(entries)) +#define VNIC_RQ_BUF_BLKS_MAX VNIC_RQ_BUF_BLKS_NEEDED(4096) + +struct vnic_rq_buf { + struct vnic_rq_buf *next; + dma_addr_t dma_addr; + void *os_buf; + unsigned int os_buf_index; + unsigned int len; + unsigned int index; + void *desc; +}; + +struct vnic_rq { + unsigned int index; + struct vnic_dev *vdev; + struct vnic_rq_ctrl __iomem *ctrl; /* memory-mapped */ + struct vnic_dev_ring ring; + struct vnic_rq_buf *bufs[VNIC_RQ_BUF_BLKS_MAX]; + struct vnic_rq_buf *to_use; + struct vnic_rq_buf *to_clean; + void *os_buf_head; + unsigned int pkts_outstanding; +}; + +static inline unsigned int vnic_rq_desc_avail(struct vnic_rq *rq) +{ + /* how many does SW own? */ + return rq->ring.desc_avail; +} + +static inline unsigned int vnic_rq_desc_used(struct vnic_rq *rq) +{ + /* how many does HW own? */ + return rq->ring.desc_count - rq->ring.desc_avail - 1; +} + +static inline void *vnic_rq_next_desc(struct vnic_rq *rq) +{ + return rq->to_use->desc; +} + +static inline unsigned int vnic_rq_next_index(struct vnic_rq *rq) +{ + return rq->to_use->index; +} + +static inline void vnic_rq_post(struct vnic_rq *rq, + void *os_buf, unsigned int os_buf_index, + dma_addr_t dma_addr, unsigned int len) +{ + struct vnic_rq_buf *buf = rq->to_use; + + buf->os_buf = os_buf; + buf->os_buf_index = os_buf_index; + buf->dma_addr = dma_addr; + buf->len = len; + + buf = buf->next; + rq->to_use = buf; + rq->ring.desc_avail--; + + /* Move the posted_index every nth descriptor + */ + +#ifndef VNIC_RQ_RETURN_RATE +#define VNIC_RQ_RETURN_RATE 0xf /* keep 2^n - 1 */ +#endif + + if ((buf->index & VNIC_RQ_RETURN_RATE) == 0) { + /* Adding write memory barrier prevents compiler and/or CPU + * reordering, thus avoiding descriptor posting before + * descriptor is initialized. Otherwise, hardware can read + * stale descriptor fields. + */ + wmb(); + iowrite32(buf->index, &rq->ctrl->posted_index); + } +} + +static inline void vnic_rq_return_descs(struct vnic_rq *rq, unsigned int count) +{ + rq->ring.desc_avail += count; +} + +enum desc_return_options { + VNIC_RQ_RETURN_DESC, + VNIC_RQ_DEFER_RETURN_DESC, +}; + +static inline void vnic_rq_service(struct vnic_rq *rq, + struct cq_desc *cq_desc, u16 completed_index, + int desc_return, void (*buf_service)(struct vnic_rq *rq, + struct cq_desc *cq_desc, struct vnic_rq_buf *buf, + int skipped, void *opaque), void *opaque) +{ + struct vnic_rq_buf *buf; + int skipped; + + buf = rq->to_clean; + while (1) { + + skipped = (buf->index != completed_index); + + (*buf_service)(rq, cq_desc, buf, skipped, opaque); + + if (desc_return == VNIC_RQ_RETURN_DESC) + rq->ring.desc_avail++; + + rq->to_clean = buf->next; + + if (!skipped) + break; + + buf = rq->to_clean; + } +} + +static inline int vnic_rq_fill(struct vnic_rq *rq, + int (*buf_fill)(struct vnic_rq *rq)) +{ + int err; + + while (vnic_rq_desc_avail(rq) > 0) { + + err = (*buf_fill)(rq); + if (err) + return err; + } + + return 0; +} + +void vnic_rq_free(struct vnic_rq *rq); +int vnic_rq_alloc(struct vnic_dev *vdev, struct vnic_rq *rq, unsigned int index, + unsigned int desc_count, unsigned int desc_size); +void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index, + unsigned int error_interrupt_enable, + unsigned int error_interrupt_offset); +unsigned int vnic_rq_error_status(struct vnic_rq *rq); +void vnic_rq_enable(struct vnic_rq *rq); +int vnic_rq_disable(struct vnic_rq *rq); +void vnic_rq_clean(struct vnic_rq *rq, + void (*buf_clean)(struct vnic_rq *rq, struct vnic_rq_buf *buf)); + +#endif /* _VNIC_RQ_H_ */ diff --git a/drivers/net/ethernet/cisco/enic/vnic_rss.h b/drivers/net/ethernet/cisco/enic/vnic_rss.h new file mode 100644 index 00000000000..fa421baf45b --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/vnic_rss.h @@ -0,0 +1,40 @@ +/* + * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#ifndef _VNIC_RSS_H_ +#define _VNIC_RSS_H_ + +/* RSS key array */ +union vnic_rss_key { + struct { + u8 b[10]; + u8 b_pad[6]; + } key[4]; + u64 raw[8]; +}; + +/* RSS cpu array */ +union vnic_rss_cpu { + struct { + u8 b[4] ; + u8 b_pad[4]; + } cpu[32]; + u64 raw[32]; +}; + +#endif /* _VNIC_RSS_H_ */ diff --git a/drivers/net/ethernet/cisco/enic/vnic_stats.h b/drivers/net/ethernet/cisco/enic/vnic_stats.h new file mode 100644 index 00000000000..77750ec9395 --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/vnic_stats.h @@ -0,0 +1,70 @@ +/* + * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#ifndef _VNIC_STATS_H_ +#define _VNIC_STATS_H_ + +/* Tx statistics */ +struct vnic_tx_stats { + u64 tx_frames_ok; + u64 tx_unicast_frames_ok; + u64 tx_multicast_frames_ok; + u64 tx_broadcast_frames_ok; + u64 tx_bytes_ok; + u64 tx_unicast_bytes_ok; + u64 tx_multicast_bytes_ok; + u64 tx_broadcast_bytes_ok; + u64 tx_drops; + u64 tx_errors; + u64 tx_tso; + u64 rsvd[16]; +}; + +/* Rx statistics */ +struct vnic_rx_stats { + u64 rx_frames_ok; + u64 rx_frames_total; + u64 rx_unicast_frames_ok; + u64 rx_multicast_frames_ok; + u64 rx_broadcast_frames_ok; + u64 rx_bytes_ok; + u64 rx_unicast_bytes_ok; + u64 rx_multicast_bytes_ok; + u64 rx_broadcast_bytes_ok; + u64 rx_drop; + u64 rx_no_bufs; + u64 rx_errors; + u64 rx_rss; + u64 rx_crc_errors; + u64 rx_frames_64; + u64 rx_frames_127; + u64 rx_frames_255; + u64 rx_frames_511; + u64 rx_frames_1023; + u64 rx_frames_1518; + u64 rx_frames_to_max; + u64 rsvd[16]; +}; + +struct vnic_stats { + struct vnic_tx_stats tx; + struct vnic_rx_stats rx; +}; + +#endif /* _VNIC_STATS_H_ */ diff --git a/drivers/net/ethernet/cisco/enic/vnic_vic.c b/drivers/net/ethernet/cisco/enic/vnic_vic.c new file mode 100644 index 00000000000..24ef8cd4054 --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/vnic_vic.c @@ -0,0 +1,79 @@ +/* + * Copyright 2010 Cisco Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#include +#include +#include +#include + +#include "vnic_vic.h" + +struct vic_provinfo *vic_provinfo_alloc(gfp_t flags, const u8 *oui, + const u8 type) +{ + struct vic_provinfo *vp; + + if (!oui) + return NULL; + + vp = kzalloc(VIC_PROVINFO_MAX_DATA, flags); + if (!vp) + return NULL; + + memcpy(vp->oui, oui, sizeof(vp->oui)); + vp->type = type; + vp->length = htonl(sizeof(vp->num_tlvs)); + + return vp; +} + +void vic_provinfo_free(struct vic_provinfo *vp) +{ + kfree(vp); +} + +int vic_provinfo_add_tlv(struct vic_provinfo *vp, u16 type, u16 length, + const void *value) +{ + struct vic_provinfo_tlv *tlv; + + if (!vp || !value) + return -EINVAL; + + if (ntohl(vp->length) + offsetof(struct vic_provinfo_tlv, value) + + length > VIC_PROVINFO_MAX_TLV_DATA) + return -ENOMEM; + + tlv = (struct vic_provinfo_tlv *)((u8 *)vp->tlv + + ntohl(vp->length) - sizeof(vp->num_tlvs)); + + tlv->type = htons(type); + tlv->length = htons(length); + memcpy(tlv->value, value, length); + + vp->num_tlvs = htonl(ntohl(vp->num_tlvs) + 1); + vp->length = htonl(ntohl(vp->length) + + offsetof(struct vic_provinfo_tlv, value) + length); + + return 0; +} + +size_t vic_provinfo_size(struct vic_provinfo *vp) +{ + return vp ? ntohl(vp->length) + sizeof(*vp) - sizeof(vp->num_tlvs) : 0; +} diff --git a/drivers/net/ethernet/cisco/enic/vnic_vic.h b/drivers/net/ethernet/cisco/enic/vnic_vic.h new file mode 100644 index 00000000000..9ef81f14835 --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/vnic_vic.h @@ -0,0 +1,83 @@ +/* + * Copyright 2010 Cisco Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#ifndef _VNIC_VIC_H_ +#define _VNIC_VIC_H_ + +/* Note: All integer fields in NETWORK byte order */ + +/* Note: String field lengths include null char */ + +#define VIC_PROVINFO_CISCO_OUI { 0x00, 0x00, 0x0c } +#define VIC_PROVINFO_GENERIC_TYPE 0x4 + +enum vic_generic_prov_tlv_type { + VIC_GENERIC_PROV_TLV_PORT_PROFILE_NAME_STR = 0, + VIC_GENERIC_PROV_TLV_CLIENT_MAC_ADDR = 1, + VIC_GENERIC_PROV_TLV_CLIENT_NAME_STR = 2, + VIC_GENERIC_PROV_TLV_CLUSTER_PORT_NAME_STR = 3, + VIC_GENERIC_PROV_TLV_CLUSTER_PORT_UUID_STR = 4, + VIC_GENERIC_PROV_TLV_CLUSTER_UUID_STR = 5, + VIC_GENERIC_PROV_TLV_CLUSTER_NAME_STR = 7, + VIC_GENERIC_PROV_TLV_HOST_UUID_STR = 8, + VIC_GENERIC_PROV_TLV_CLIENT_UUID_STR = 9, + VIC_GENERIC_PROV_TLV_INCARNATION_NUMBER = 10, + VIC_GENERIC_PROV_TLV_OS_TYPE = 11, + VIC_GENERIC_PROV_TLV_OS_VENDOR = 12, + VIC_GENERIC_PROV_TLV_CLIENT_TYPE = 15, +}; + +enum vic_generic_prov_os_type { + VIC_GENERIC_PROV_OS_TYPE_UNKNOWN = 0, + VIC_GENERIC_PROV_OS_TYPE_ESX = 1, + VIC_GENERIC_PROV_OS_TYPE_LINUX = 2, + VIC_GENERIC_PROV_OS_TYPE_WINDOWS = 3, + VIC_GENERIC_PROV_OS_TYPE_SOLARIS = 4, +}; + +struct vic_provinfo { + u8 oui[3]; /* OUI of data provider */ + u8 type; /* provider-specific type */ + u32 length; /* length of data below */ + u32 num_tlvs; /* number of tlvs */ + struct vic_provinfo_tlv { + u16 type; + u16 length; + u8 value[0]; + } tlv[0]; +} __packed; + +#define VIC_PROVINFO_ADD_TLV(vp, tlvtype, tlvlen, data) \ + do { \ + err = vic_provinfo_add_tlv(vp, tlvtype, tlvlen, data); \ + if (err) \ + goto add_tlv_failure; \ + } while (0) + +#define VIC_PROVINFO_MAX_DATA 1385 +#define VIC_PROVINFO_MAX_TLV_DATA (VIC_PROVINFO_MAX_DATA - \ + sizeof(struct vic_provinfo)) + +struct vic_provinfo *vic_provinfo_alloc(gfp_t flags, const u8 *oui, + const u8 type); +void vic_provinfo_free(struct vic_provinfo *vp); +int vic_provinfo_add_tlv(struct vic_provinfo *vp, u16 type, u16 length, + const void *value); +size_t vic_provinfo_size(struct vic_provinfo *vp); + +#endif /* _VNIC_VIC_H_ */ diff --git a/drivers/net/ethernet/cisco/enic/vnic_wq.c b/drivers/net/ethernet/cisco/enic/vnic_wq.c new file mode 100644 index 00000000000..df61bd932ea --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/vnic_wq.c @@ -0,0 +1,200 @@ +/* + * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#include +#include +#include +#include +#include +#include + +#include "vnic_dev.h" +#include "vnic_wq.h" + +static int vnic_wq_alloc_bufs(struct vnic_wq *wq) +{ + struct vnic_wq_buf *buf; + struct vnic_dev *vdev; + unsigned int i, j, count = wq->ring.desc_count; + unsigned int blks = VNIC_WQ_BUF_BLKS_NEEDED(count); + + vdev = wq->vdev; + + for (i = 0; i < blks; i++) { + wq->bufs[i] = kzalloc(VNIC_WQ_BUF_BLK_SZ(count), GFP_ATOMIC); + if (!wq->bufs[i]) { + pr_err("Failed to alloc wq_bufs\n"); + return -ENOMEM; + } + } + + for (i = 0; i < blks; i++) { + buf = wq->bufs[i]; + for (j = 0; j < VNIC_WQ_BUF_BLK_ENTRIES(count); j++) { + buf->index = i * VNIC_WQ_BUF_BLK_ENTRIES(count) + j; + buf->desc = (u8 *)wq->ring.descs + + wq->ring.desc_size * buf->index; + if (buf->index + 1 == count) { + buf->next = wq->bufs[0]; + break; + } else if (j + 1 == VNIC_WQ_BUF_BLK_ENTRIES(count)) { + buf->next = wq->bufs[i + 1]; + } else { + buf->next = buf + 1; + buf++; + } + } + } + + wq->to_use = wq->to_clean = wq->bufs[0]; + + return 0; +} + +void vnic_wq_free(struct vnic_wq *wq) +{ + struct vnic_dev *vdev; + unsigned int i; + + vdev = wq->vdev; + + vnic_dev_free_desc_ring(vdev, &wq->ring); + + for (i = 0; i < VNIC_WQ_BUF_BLKS_MAX; i++) { + if (wq->bufs[i]) { + kfree(wq->bufs[i]); + wq->bufs[i] = NULL; + } + } + + wq->ctrl = NULL; +} + +int vnic_wq_alloc(struct vnic_dev *vdev, struct vnic_wq *wq, unsigned int index, + unsigned int desc_count, unsigned int desc_size) +{ + int err; + + wq->index = index; + wq->vdev = vdev; + + wq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_WQ, index); + if (!wq->ctrl) { + pr_err("Failed to hook WQ[%d] resource\n", index); + return -EINVAL; + } + + vnic_wq_disable(wq); + + err = vnic_dev_alloc_desc_ring(vdev, &wq->ring, desc_count, desc_size); + if (err) + return err; + + err = vnic_wq_alloc_bufs(wq); + if (err) { + vnic_wq_free(wq); + return err; + } + + return 0; +} + +static void vnic_wq_init_start(struct vnic_wq *wq, unsigned int cq_index, + unsigned int fetch_index, unsigned int posted_index, + unsigned int error_interrupt_enable, + unsigned int error_interrupt_offset) +{ + u64 paddr; + unsigned int count = wq->ring.desc_count; + + paddr = (u64)wq->ring.base_addr | VNIC_PADDR_TARGET; + writeq(paddr, &wq->ctrl->ring_base); + iowrite32(count, &wq->ctrl->ring_size); + iowrite32(fetch_index, &wq->ctrl->fetch_index); + iowrite32(posted_index, &wq->ctrl->posted_index); + iowrite32(cq_index, &wq->ctrl->cq_index); + iowrite32(error_interrupt_enable, &wq->ctrl->error_interrupt_enable); + iowrite32(error_interrupt_offset, &wq->ctrl->error_interrupt_offset); + iowrite32(0, &wq->ctrl->error_status); + + wq->to_use = wq->to_clean = + &wq->bufs[fetch_index / VNIC_WQ_BUF_BLK_ENTRIES(count)] + [fetch_index % VNIC_WQ_BUF_BLK_ENTRIES(count)]; +} + +void vnic_wq_init(struct vnic_wq *wq, unsigned int cq_index, + unsigned int error_interrupt_enable, + unsigned int error_interrupt_offset) +{ + vnic_wq_init_start(wq, cq_index, 0, 0, + error_interrupt_enable, + error_interrupt_offset); +} + +unsigned int vnic_wq_error_status(struct vnic_wq *wq) +{ + return ioread32(&wq->ctrl->error_status); +} + +void vnic_wq_enable(struct vnic_wq *wq) +{ + iowrite32(1, &wq->ctrl->enable); +} + +int vnic_wq_disable(struct vnic_wq *wq) +{ + unsigned int wait; + + iowrite32(0, &wq->ctrl->enable); + + /* Wait for HW to ACK disable request */ + for (wait = 0; wait < 1000; wait++) { + if (!(ioread32(&wq->ctrl->running))) + return 0; + udelay(10); + } + + pr_err("Failed to disable WQ[%d]\n", wq->index); + + return -ETIMEDOUT; +} + +void vnic_wq_clean(struct vnic_wq *wq, + void (*buf_clean)(struct vnic_wq *wq, struct vnic_wq_buf *buf)) +{ + struct vnic_wq_buf *buf; + + buf = wq->to_clean; + + while (vnic_wq_desc_used(wq) > 0) { + + (*buf_clean)(wq, buf); + + buf = wq->to_clean = buf->next; + wq->ring.desc_avail++; + } + + wq->to_use = wq->to_clean = wq->bufs[0]; + + iowrite32(0, &wq->ctrl->fetch_index); + iowrite32(0, &wq->ctrl->posted_index); + iowrite32(0, &wq->ctrl->error_status); + + vnic_dev_clear_desc_ring(&wq->ring); +} diff --git a/drivers/net/ethernet/cisco/enic/vnic_wq.h b/drivers/net/ethernet/cisco/enic/vnic_wq.h new file mode 100644 index 00000000000..7dd937ac11c --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/vnic_wq.h @@ -0,0 +1,165 @@ +/* + * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#ifndef _VNIC_WQ_H_ +#define _VNIC_WQ_H_ + +#include + +#include "vnic_dev.h" +#include "vnic_cq.h" + +/* Work queue control */ +struct vnic_wq_ctrl { + u64 ring_base; /* 0x00 */ + u32 ring_size; /* 0x08 */ + u32 pad0; + u32 posted_index; /* 0x10 */ + u32 pad1; + u32 cq_index; /* 0x18 */ + u32 pad2; + u32 enable; /* 0x20 */ + u32 pad3; + u32 running; /* 0x28 */ + u32 pad4; + u32 fetch_index; /* 0x30 */ + u32 pad5; + u32 dca_value; /* 0x38 */ + u32 pad6; + u32 error_interrupt_enable; /* 0x40 */ + u32 pad7; + u32 error_interrupt_offset; /* 0x48 */ + u32 pad8; + u32 error_status; /* 0x50 */ + u32 pad9; +}; + +struct vnic_wq_buf { + struct vnic_wq_buf *next; + dma_addr_t dma_addr; + void *os_buf; + unsigned int len; + unsigned int index; + int sop; + void *desc; +}; + +/* Break the vnic_wq_buf allocations into blocks of 32/64 entries */ +#define VNIC_WQ_BUF_MIN_BLK_ENTRIES 32 +#define VNIC_WQ_BUF_DFLT_BLK_ENTRIES 64 +#define VNIC_WQ_BUF_BLK_ENTRIES(entries) \ + ((unsigned int)((entries < VNIC_WQ_BUF_DFLT_BLK_ENTRIES) ? \ + VNIC_WQ_BUF_MIN_BLK_ENTRIES : VNIC_WQ_BUF_DFLT_BLK_ENTRIES)) +#define VNIC_WQ_BUF_BLK_SZ(entries) \ + (VNIC_WQ_BUF_BLK_ENTRIES(entries) * sizeof(struct vnic_wq_buf)) +#define VNIC_WQ_BUF_BLKS_NEEDED(entries) \ + DIV_ROUND_UP(entries, VNIC_WQ_BUF_BLK_ENTRIES(entries)) +#define VNIC_WQ_BUF_BLKS_MAX VNIC_WQ_BUF_BLKS_NEEDED(4096) + +struct vnic_wq { + unsigned int index; + struct vnic_dev *vdev; + struct vnic_wq_ctrl __iomem *ctrl; /* memory-mapped */ + struct vnic_dev_ring ring; + struct vnic_wq_buf *bufs[VNIC_WQ_BUF_BLKS_MAX]; + struct vnic_wq_buf *to_use; + struct vnic_wq_buf *to_clean; + unsigned int pkts_outstanding; +}; + +static inline unsigned int vnic_wq_desc_avail(struct vnic_wq *wq) +{ + /* how many does SW own? */ + return wq->ring.desc_avail; +} + +static inline unsigned int vnic_wq_desc_used(struct vnic_wq *wq) +{ + /* how many does HW own? */ + return wq->ring.desc_count - wq->ring.desc_avail - 1; +} + +static inline void *vnic_wq_next_desc(struct vnic_wq *wq) +{ + return wq->to_use->desc; +} + +static inline void vnic_wq_post(struct vnic_wq *wq, + void *os_buf, dma_addr_t dma_addr, + unsigned int len, int sop, int eop) +{ + struct vnic_wq_buf *buf = wq->to_use; + + buf->sop = sop; + buf->os_buf = eop ? os_buf : NULL; + buf->dma_addr = dma_addr; + buf->len = len; + + buf = buf->next; + if (eop) { + /* Adding write memory barrier prevents compiler and/or CPU + * reordering, thus avoiding descriptor posting before + * descriptor is initialized. Otherwise, hardware can read + * stale descriptor fields. + */ + wmb(); + iowrite32(buf->index, &wq->ctrl->posted_index); + } + wq->to_use = buf; + + wq->ring.desc_avail--; +} + +static inline void vnic_wq_service(struct vnic_wq *wq, + struct cq_desc *cq_desc, u16 completed_index, + void (*buf_service)(struct vnic_wq *wq, + struct cq_desc *cq_desc, struct vnic_wq_buf *buf, void *opaque), + void *opaque) +{ + struct vnic_wq_buf *buf; + + buf = wq->to_clean; + while (1) { + + (*buf_service)(wq, cq_desc, buf, opaque); + + wq->ring.desc_avail++; + + wq->to_clean = buf->next; + + if (buf->index == completed_index) + break; + + buf = wq->to_clean; + } +} + +void vnic_wq_free(struct vnic_wq *wq); +int vnic_wq_alloc(struct vnic_dev *vdev, struct vnic_wq *wq, unsigned int index, + unsigned int desc_count, unsigned int desc_size); +void vnic_wq_init(struct vnic_wq *wq, unsigned int cq_index, + unsigned int error_interrupt_enable, + unsigned int error_interrupt_offset); +unsigned int vnic_wq_error_status(struct vnic_wq *wq); +void vnic_wq_enable(struct vnic_wq *wq); +int vnic_wq_disable(struct vnic_wq *wq); +void vnic_wq_clean(struct vnic_wq *wq, + void (*buf_clean)(struct vnic_wq *wq, struct vnic_wq_buf *buf)); + +#endif /* _VNIC_WQ_H_ */ diff --git a/drivers/net/ethernet/cisco/enic/wq_enet_desc.h b/drivers/net/ethernet/cisco/enic/wq_enet_desc.h new file mode 100644 index 00000000000..c7021e3a631 --- /dev/null +++ b/drivers/net/ethernet/cisco/enic/wq_enet_desc.h @@ -0,0 +1,98 @@ +/* + * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#ifndef _WQ_ENET_DESC_H_ +#define _WQ_ENET_DESC_H_ + +/* Ethernet work queue descriptor: 16B */ +struct wq_enet_desc { + __le64 address; + __le16 length; + __le16 mss_loopback; + __le16 header_length_flags; + __le16 vlan_tag; +}; + +#define WQ_ENET_ADDR_BITS 64 +#define WQ_ENET_LEN_BITS 14 +#define WQ_ENET_LEN_MASK ((1 << WQ_ENET_LEN_BITS) - 1) +#define WQ_ENET_MSS_BITS 14 +#define WQ_ENET_MSS_MASK ((1 << WQ_ENET_MSS_BITS) - 1) +#define WQ_ENET_MSS_SHIFT 2 +#define WQ_ENET_LOOPBACK_SHIFT 1 +#define WQ_ENET_HDRLEN_BITS 10 +#define WQ_ENET_HDRLEN_MASK ((1 << WQ_ENET_HDRLEN_BITS) - 1) +#define WQ_ENET_FLAGS_OM_BITS 2 +#define WQ_ENET_FLAGS_OM_MASK ((1 << WQ_ENET_FLAGS_OM_BITS) - 1) +#define WQ_ENET_FLAGS_EOP_SHIFT 12 +#define WQ_ENET_FLAGS_CQ_ENTRY_SHIFT 13 +#define WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT 14 +#define WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT 15 + +#define WQ_ENET_OFFLOAD_MODE_CSUM 0 +#define WQ_ENET_OFFLOAD_MODE_RESERVED 1 +#define WQ_ENET_OFFLOAD_MODE_CSUM_L4 2 +#define WQ_ENET_OFFLOAD_MODE_TSO 3 + +static inline void wq_enet_desc_enc(struct wq_enet_desc *desc, + u64 address, u16 length, u16 mss, u16 header_length, + u8 offload_mode, u8 eop, u8 cq_entry, u8 fcoe_encap, + u8 vlan_tag_insert, u16 vlan_tag, u8 loopback) +{ + desc->address = cpu_to_le64(address); + desc->length = cpu_to_le16(length & WQ_ENET_LEN_MASK); + desc->mss_loopback = cpu_to_le16((mss & WQ_ENET_MSS_MASK) << + WQ_ENET_MSS_SHIFT | (loopback & 1) << WQ_ENET_LOOPBACK_SHIFT); + desc->header_length_flags = cpu_to_le16( + (header_length & WQ_ENET_HDRLEN_MASK) | + (offload_mode & WQ_ENET_FLAGS_OM_MASK) << WQ_ENET_HDRLEN_BITS | + (eop & 1) << WQ_ENET_FLAGS_EOP_SHIFT | + (cq_entry & 1) << WQ_ENET_FLAGS_CQ_ENTRY_SHIFT | + (fcoe_encap & 1) << WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT | + (vlan_tag_insert & 1) << WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT); + desc->vlan_tag = cpu_to_le16(vlan_tag); +} + +static inline void wq_enet_desc_dec(struct wq_enet_desc *desc, + u64 *address, u16 *length, u16 *mss, u16 *header_length, + u8 *offload_mode, u8 *eop, u8 *cq_entry, u8 *fcoe_encap, + u8 *vlan_tag_insert, u16 *vlan_tag, u8 *loopback) +{ + *address = le64_to_cpu(desc->address); + *length = le16_to_cpu(desc->length) & WQ_ENET_LEN_MASK; + *mss = (le16_to_cpu(desc->mss_loopback) >> WQ_ENET_MSS_SHIFT) & + WQ_ENET_MSS_MASK; + *loopback = (u8)((le16_to_cpu(desc->mss_loopback) >> + WQ_ENET_LOOPBACK_SHIFT) & 1); + *header_length = le16_to_cpu(desc->header_length_flags) & + WQ_ENET_HDRLEN_MASK; + *offload_mode = (u8)((le16_to_cpu(desc->header_length_flags) >> + WQ_ENET_HDRLEN_BITS) & WQ_ENET_FLAGS_OM_MASK); + *eop = (u8)((le16_to_cpu(desc->header_length_flags) >> + WQ_ENET_FLAGS_EOP_SHIFT) & 1); + *cq_entry = (u8)((le16_to_cpu(desc->header_length_flags) >> + WQ_ENET_FLAGS_CQ_ENTRY_SHIFT) & 1); + *fcoe_encap = (u8)((le16_to_cpu(desc->header_length_flags) >> + WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT) & 1); + *vlan_tag_insert = (u8)((le16_to_cpu(desc->header_length_flags) >> + WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT) & 1); + *vlan_tag = le16_to_cpu(desc->vlan_tag); +} + +#endif /* _WQ_ENET_DESC_H_ */ -- cgit v1.2.3-70-g09d2