diff options
| -rw-r--r-- | drivers/net/cxgb4vf/t4vf_common.h | 273 | ||||
| -rw-r--r-- | drivers/net/cxgb4vf/t4vf_defs.h | 121 | ||||
| -rw-r--r-- | drivers/net/cxgb4vf/t4vf_hw.c | 1333 |
3 files changed, 1727 insertions, 0 deletions
diff --git a/drivers/net/cxgb4vf/t4vf_common.h b/drivers/net/cxgb4vf/t4vf_common.h new file mode 100644 index 00000000000..5c7bde7f9ba --- /dev/null +++ b/drivers/net/cxgb4vf/t4vf_common.h @@ -0,0 +1,273 @@ +/* + * This file is part of the Chelsio T4 PCI-E SR-IOV Virtual Function Ethernet + * driver for Linux. + * + * Copyright (c) 2009-2010 Chelsio Communications, Inc. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * 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 __T4VF_COMMON_H__ +#define __T4VF_COMMON_H__ + +#include "../cxgb4/t4fw_api.h" + +/* + * The "len16" field of a Firmware Command Structure ... + */ +#define FW_LEN16(fw_struct) FW_CMD_LEN16(sizeof(fw_struct) / 16) + +/* + * Per-VF statistics. + */ +struct t4vf_port_stats { + /* + * TX statistics. + */ + u64 tx_bcast_bytes; /* broadcast */ + u64 tx_bcast_frames; + u64 tx_mcast_bytes; /* multicast */ + u64 tx_mcast_frames; + u64 tx_ucast_bytes; /* unicast */ + u64 tx_ucast_frames; + u64 tx_drop_frames; /* TX dropped frames */ + u64 tx_offload_bytes; /* offload */ + u64 tx_offload_frames; + + /* + * RX statistics. + */ + u64 rx_bcast_bytes; /* broadcast */ + u64 rx_bcast_frames; + u64 rx_mcast_bytes; /* multicast */ + u64 rx_mcast_frames; + u64 rx_ucast_bytes; + u64 rx_ucast_frames; /* unicast */ + + u64 rx_err_frames; /* RX error frames */ +}; + +/* + * Per-"port" (Virtual Interface) link configuration ... + */ +struct link_config { + unsigned int supported; /* link capabilities */ + unsigned int advertising; /* advertised capabilities */ + unsigned short requested_speed; /* speed user has requested */ + unsigned short speed; /* actual link speed */ + unsigned char requested_fc; /* flow control user has requested */ + unsigned char fc; /* actual link flow control */ + unsigned char autoneg; /* autonegotiating? */ + unsigned char link_ok; /* link up? */ +}; + +enum { + PAUSE_RX = 1 << 0, + PAUSE_TX = 1 << 1, + PAUSE_AUTONEG = 1 << 2 +}; + +/* + * General device parameters ... + */ +struct dev_params { + u32 fwrev; /* firmware version */ + u32 tprev; /* TP Microcode Version */ +}; + +/* + * Scatter Gather Engine parameters. These are almost all determined by the + * Physical Function Driver. We just need to grab them to see within which + * environment we're playing ... + */ +struct sge_params { + u32 sge_control; /* padding, boundaries, lengths, etc. */ + u32 sge_host_page_size; /* RDMA page sizes */ + u32 sge_queues_per_page; /* RDMA queues/page */ + u32 sge_user_mode_limits; /* limits for BAR2 user mode accesses */ + u32 sge_fl_buffer_size[16]; /* free list buffer sizes */ + u32 sge_ingress_rx_threshold; /* RX counter interrupt threshold[4] */ + u32 sge_timer_value_0_and_1; /* interrupt coalescing timer values */ + u32 sge_timer_value_2_and_3; + u32 sge_timer_value_4_and_5; +}; + +/* + * Vital Product Data parameters. + */ +struct vpd_params { + u32 cclk; /* Core Clock (KHz) */ +}; + +/* + * Global Receive Side Scaling (RSS) parameters in host-native format. + */ +struct rss_params { + unsigned int mode; /* RSS mode */ + union { + struct { + int synmapen:1; /* SYN Map Enable */ + int syn4tupenipv6:1; /* enable hashing 4-tuple IPv6 SYNs */ + int syn2tupenipv6:1; /* enable hashing 2-tuple IPv6 SYNs */ + int syn4tupenipv4:1; /* enable hashing 4-tuple IPv4 SYNs */ + int syn2tupenipv4:1; /* enable hashing 2-tuple IPv4 SYNs */ + int ofdmapen:1; /* Offload Map Enable */ + int tnlmapen:1; /* Tunnel Map Enable */ + int tnlalllookup:1; /* Tunnel All Lookup */ + int hashtoeplitz:1; /* use Toeplitz hash */ + } basicvirtual; + } u; +}; + +/* + * Virtual Interface RSS Configuration in host-native format. + */ +union rss_vi_config { + struct { + u16 defaultq; /* Ingress Queue ID for !tnlalllookup */ + int ip6fourtupen:1; /* hash 4-tuple IPv6 ingress packets */ + int ip6twotupen:1; /* hash 2-tuple IPv6 ingress packets */ + int ip4fourtupen:1; /* hash 4-tuple IPv4 ingress packets */ + int ip4twotupen:1; /* hash 2-tuple IPv4 ingress packets */ + int udpen; /* hash 4-tuple UDP ingress packets */ + } basicvirtual; +}; + +/* + * Maximum resources provisioned for a PCI VF. + */ +struct vf_resources { + unsigned int nvi; /* N virtual interfaces */ + unsigned int neq; /* N egress Qs */ + unsigned int nethctrl; /* N egress ETH or CTRL Qs */ + unsigned int niqflint; /* N ingress Qs/w free list(s) & intr */ + unsigned int niq; /* N ingress Qs */ + unsigned int tc; /* PCI-E traffic class */ + unsigned int pmask; /* port access rights mask */ + unsigned int nexactf; /* N exact MPS filters */ + unsigned int r_caps; /* read capabilities */ + unsigned int wx_caps; /* write/execute capabilities */ +}; + +/* + * Per-"adapter" (Virtual Function) parameters. + */ +struct adapter_params { + struct dev_params dev; /* general device parameters */ + struct sge_params sge; /* Scatter Gather Engine */ + struct vpd_params vpd; /* Vital Product Data */ + struct rss_params rss; /* Receive Side Scaling */ + struct vf_resources vfres; /* Virtual Function Resource limits */ + u8 nports; /* # of Ethernet "ports" */ +}; + +#include "adapter.h" + +#ifndef PCI_VENDOR_ID_CHELSIO +# define PCI_VENDOR_ID_CHELSIO 0x1425 +#endif + +#define for_each_port(adapter, iter) \ + for (iter = 0; iter < (adapter)->params.nports; iter++) + +static inline bool is_10g_port(const struct link_config *lc) +{ + return (lc->supported & SUPPORTED_10000baseT_Full) != 0; +} + +static inline unsigned int core_ticks_per_usec(const struct adapter *adapter) +{ + return adapter->params.vpd.cclk / 1000; +} + +static inline unsigned int us_to_core_ticks(const struct adapter *adapter, + unsigned int us) +{ + return (us * adapter->params.vpd.cclk) / 1000; +} + +static inline unsigned int core_ticks_to_us(const struct adapter *adapter, + unsigned int ticks) +{ + return (ticks * 1000) / adapter->params.vpd.cclk; +} + +int t4vf_wr_mbox_core(struct adapter *, const void *, int, void *, bool); + +static inline int t4vf_wr_mbox(struct adapter *adapter, const void *cmd, + int size, void *rpl) +{ + return t4vf_wr_mbox_core(adapter, cmd, size, rpl, true); +} + +static inline int t4vf_wr_mbox_ns(struct adapter *adapter, const void *cmd, + int size, void *rpl) +{ + return t4vf_wr_mbox_core(adapter, cmd, size, rpl, false); +} + +int __devinit t4vf_wait_dev_ready(struct adapter *); +int __devinit t4vf_port_init(struct adapter *, int); + +int t4vf_query_params(struct adapter *, unsigned int, const u32 *, u32 *); +int t4vf_set_params(struct adapter *, unsigned int, const u32 *, const u32 *); + +int t4vf_get_sge_params(struct adapter *); +int t4vf_get_vpd_params(struct adapter *); +int t4vf_get_dev_params(struct adapter *); +int t4vf_get_rss_glb_config(struct adapter *); +int t4vf_get_vfres(struct adapter *); + +int t4vf_read_rss_vi_config(struct adapter *, unsigned int, + union rss_vi_config *); +int t4vf_write_rss_vi_config(struct adapter *, unsigned int, + union rss_vi_config *); +int t4vf_config_rss_range(struct adapter *, unsigned int, int, int, + const u16 *, int); + +int t4vf_alloc_vi(struct adapter *, int); +int t4vf_free_vi(struct adapter *, int); +int t4vf_enable_vi(struct adapter *, unsigned int, bool, bool); +int t4vf_identify_port(struct adapter *, unsigned int, unsigned int); + +int t4vf_set_rxmode(struct adapter *, unsigned int, int, int, int, int, int, + bool); +int t4vf_alloc_mac_filt(struct adapter *, unsigned int, bool, unsigned int, + const u8 **, u16 *, u64 *, bool); +int t4vf_change_mac(struct adapter *, unsigned int, int, const u8 *, bool); +int t4vf_set_addr_hash(struct adapter *, unsigned int, bool, u64, bool); +int t4vf_get_port_stats(struct adapter *, int, struct t4vf_port_stats *); + +int t4vf_iq_free(struct adapter *, unsigned int, unsigned int, unsigned int, + unsigned int); +int t4vf_eth_eq_free(struct adapter *, unsigned int); + +int t4vf_handle_fw_rpl(struct adapter *, const __be64 *); + +#endif /* __T4VF_COMMON_H__ */ diff --git a/drivers/net/cxgb4vf/t4vf_defs.h b/drivers/net/cxgb4vf/t4vf_defs.h new file mode 100644 index 00000000000..c7b127d9376 --- /dev/null +++ b/drivers/net/cxgb4vf/t4vf_defs.h @@ -0,0 +1,121 @@ +/* + * This file is part of the Chelsio T4 PCI-E SR-IOV Virtual Function Ethernet + * driver for Linux. + * + * Copyright (c) 2009-2010 Chelsio Communications, Inc. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * 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 __T4VF_DEFS_H__ +#define __T4VF_DEFS_H__ + +#include "../cxgb4/t4_regs.h" + +/* + * The VF Register Map. + * + * The Scatter Gather Engine (SGE), Multiport Support module (MPS), PIO Local + * bus module (PL) and CPU Interface Module (CIM) components are mapped via + * the Slice to Module Map Table (see below) in the Physical Function Register + * Map. The Mail Box Data (MBDATA) range is mapped via the PCI-E Mailbox Base + * and Offset registers in the PF Register Map. The MBDATA base address is + * quite constrained as it determines the Mailbox Data addresses for both PFs + * and VFs, and therefore must fit in both the VF and PF Register Maps without + * overlapping other registers. + */ +#define T4VF_SGE_BASE_ADDR 0x0000 +#define T4VF_MPS_BASE_ADDR 0x0100 +#define T4VF_PL_BASE_ADDR 0x0200 +#define T4VF_MBDATA_BASE_ADDR 0x0240 +#define T4VF_CIM_BASE_ADDR 0x0300 + +#define T4VF_REGMAP_START 0x0000 +#define T4VF_REGMAP_SIZE 0x0400 + +/* + * There's no hardware limitation which requires that the addresses of the + * Mailbox Data in the fixed CIM PF map and the programmable VF map must + * match. However, it's a useful convention ... + */ +#if T4VF_MBDATA_BASE_ADDR != CIM_PF_MAILBOX_DATA +#error T4VF_MBDATA_BASE_ADDR must match CIM_PF_MAILBOX_DATA! +#endif + +/* + * Virtual Function "Slice to Module Map Table" definitions. + * + * This table allows us to map subsets of the various module register sets + * into the T4VF Register Map. Each table entry identifies the index of the + * module whose registers are being mapped, the offset within the module's + * register set that the mapping should start at, the limit of the mapping, + * and the offset within the T4VF Register Map to which the module's registers + * are being mapped. All addresses and qualtities are in terms of 32-bit + * words. The "limit" value is also in terms of 32-bit words and is equal to + * the last address mapped in the T4VF Register Map 1 (i.e. it's a "<=" + * relation rather than a "<"). + */ +#define T4VF_MOD_MAP(module, index, first, last) \ + T4VF_MOD_MAP_##module##_INDEX = (index), \ + T4VF_MOD_MAP_##module##_FIRST = (first), \ + T4VF_MOD_MAP_##module##_LAST = (last), \ + T4VF_MOD_MAP_##module##_OFFSET = ((first)/4), \ + T4VF_MOD_MAP_##module##_BASE = \ + (T4VF_##module##_BASE_ADDR/4 + (first)/4), \ + T4VF_MOD_MAP_##module##_LIMIT = \ + (T4VF_##module##_BASE_ADDR/4 + (last)/4), + +#define SGE_VF_KDOORBELL 0x0 +#define SGE_VF_GTS 0x4 +#define MPS_VF_CTL 0x0 +#define MPS_VF_STAT_RX_VF_ERR_FRAMES_H 0xfc +#define PL_VF_WHOAMI 0x0 +#define CIM_VF_EXT_MAILBOX_CTRL 0x0 +#define CIM_VF_EXT_MAILBOX_STATUS 0x4 + +enum { + T4VF_MOD_MAP(SGE, 2, SGE_VF_KDOORBELL, SGE_VF_GTS) + T4VF_MOD_MAP(MPS, 0, MPS_VF_CTL, MPS_VF_STAT_RX_VF_ERR_FRAMES_H) + T4VF_MOD_MAP(PL, 3, PL_VF_WHOAMI, PL_VF_WHOAMI) + T4VF_MOD_MAP(CIM, 1, CIM_VF_EXT_MAILBOX_CTRL, CIM_VF_EXT_MAILBOX_STATUS) +}; + +/* + * There isn't a Slice to Module Map Table entry for the Mailbox Data + * registers, but it's convenient to use similar names as above. There are 8 + * little-endian 64-bit Mailbox Data registers. Note that the "instances" + * value below is in terms of 32-bit words which matches the "word" addressing + * space we use above for the Slice to Module Map Space. + */ +#define NUM_CIM_VF_MAILBOX_DATA_INSTANCES 16 + +#define T4VF_MBDATA_FIRST 0 +#define T4VF_MBDATA_LAST ((NUM_CIM_VF_MAILBOX_DATA_INSTANCES-1)*4) + +#endif /* __T4T4VF_DEFS_H__ */ diff --git a/drivers/net/cxgb4vf/t4vf_hw.c b/drivers/net/cxgb4vf/t4vf_hw.c new file mode 100644 index 00000000000..1ef252864b9 --- /dev/null +++ b/drivers/net/cxgb4vf/t4vf_hw.c @@ -0,0 +1,1333 @@ +/* + * This file is part of the Chelsio T4 PCI-E SR-IOV Virtual Function Ethernet + * driver for Linux. + * + * Copyright (c) 2009-2010 Chelsio Communications, Inc. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * 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 <linux/version.h> +#include <linux/pci.h> + +#include "t4vf_common.h" +#include "t4vf_defs.h" + +#include "../cxgb4/t4_regs.h" +#include "../cxgb4/t4fw_api.h" + +/* + * Wait for the device to become ready (signified by our "who am I" register + * returning a value other than all 1's). Return an error if it doesn't + * become ready ... + */ +int __devinit t4vf_wait_dev_ready(struct adapter *adapter) +{ + const u32 whoami = T4VF_PL_BASE_ADDR + PL_VF_WHOAMI; + const u32 notready1 = 0xffffffff; + const u32 notready2 = 0xeeeeeeee; + u32 val; + + val = t4_read_reg(adapter, whoami); + if (val != notready1 && val != notready2) + return 0; + msleep(500); + val = t4_read_reg(adapter, whoami); + if (val != notready1 && val != notready2) + return 0; + else + return -EIO; +} + +/* + * Get the reply to a mailbox command and store it in @rpl in big-endian order + * (since the firmware data structures are specified in a big-endian layout). + */ +static void get_mbox_rpl(struct adapter *adapter, __be64 *rpl, int size, + u32 mbox_data) +{ + for ( ; size; size -= 8, mbox_data += 8) + *rpl++ = cpu_to_be64(t4_read_reg64(adapter, mbox_data)); +} + +/* + * Dump contents of mailbox with a leading tag. + */ +static void dump_mbox(struct adapter *adapter, const char *tag, u32 mbox_data) +{ + dev_err(adapter->pdev_dev, + "mbox %s: %llx %llx %llx %llx %llx %llx %llx %llx\n", tag, + (unsigned long long)t4_read_reg64(adapter, mbox_data + 0), + (unsigned long long)t4_read_reg64(adapter, mbox_data + 8), + (unsigned long long)t4_read_reg64(adapter, mbox_data + 16), + (unsigned long long)t4_read_reg64(adapter, mbox_data + 24), + (unsigned long long)t4_read_reg64(adapter, mbox_data + 32), + (unsigned long long)t4_read_reg64(adapter, mbox_data + 40), + (unsigned long long)t4_read_reg64(adapter, mbox_data + 48), + (unsigned long long)t4_read_reg64(adapter, mbox_data + 56)); +} + +/** + * t4vf_wr_mbox_core - send a command to FW through the mailbox + * @adapter: the adapter + * @cmd: the command to write + * @size: command length in bytes + * @rpl: where to optionally store the reply + * @sleep_ok: if true we may sleep while awaiting command completion + * + * Sends the given command to FW through the mailbox and waits for the + * FW to execute the command. If @rpl is not %NULL it is used to store + * the FW's reply to the command. The command and its optional reply + * are of the same length. FW can take up to 500 ms to respond. + * @sleep_ok determines whether we may sleep while awaiting the response. + * If sleeping is allowed we use progressive backoff otherwise we spin. + * + * The return value is 0 on success or a negative errno on failure. A + * failure can happen either because we are not able to execute the + * command or FW executes it but signals an error. In the latter case + * the return value is the error code indicated by FW (negated). + */ +int t4vf_wr_mbox_core(struct adapter *adapter, const void *cmd, int size, + void *rpl, bool sleep_ok) +{ + static int delay[] = { + 1, 1, 3, 5, 10, 10, 20, 50, 100 + }; + + u32 v; + int i, ms, delay_idx; + const __be64 *p; + u32 mbox_data = T4VF_MBDATA_BASE_ADDR; + u32 mbox_ctl = T4VF_CIM_BASE_ADDR + CIM_VF_EXT_MAILBOX_CTRL; + + /* + * Commands must be multiples of 16 bytes in length and may not be + * larger than the size of the Mailbox Data register array. + */ + if ((size % 16) != 0 || + size > NUM_CIM_VF_MAILBOX_DATA_INSTANCES * 4) + return -EINVAL; + + /* + * Loop trying to get ownership of the mailbox. Return an error + * if we can't gain ownership. + */ + v = MBOWNER_GET(t4_read_reg(adapter, mbox_ctl)); + for (i = 0; v == MBOX_OWNER_NONE && i < 3; i++) + v = MBOWNER_GET(t4_read_reg(adapter, mbox_ctl)); + if (v != MBOX_OWNER_DRV) + return v == MBOX_OWNER_FW ? -EBUSY : -ETIMEDOUT; + + /* + * Write the command array into the Mailbox Data register array and + * transfer ownership of the mailbox to the firmware. + */ + for (i = 0, p = cmd; i < size; i += 8) + t4_write_reg64(adapter, mbox_data + i, be64_to_cpu(*p++)); + t4_write_reg(adapter, mbox_ctl, + MBMSGVALID | MBOWNER(MBOX_OWNER_FW)); + t4_read_reg(adapter, mbox_ctl); /* flush write */ + + /* + * Spin waiting for firmware to acknowledge processing our command. + */ + delay_idx = 0; + ms = delay[0]; + + for (i = 0; i < 500; i += ms) { + if (sleep_ok) { + ms = delay[delay_idx]; + if (delay_idx < ARRAY_SIZE(delay)) + delay_idx++; + msleep(ms); + } else + mdelay(ms); + + /* + * If we're the owner, see if this is the reply we wanted. + */ + v = t4_read_reg(adapter, mbox_ctl); + if (MBOWNER_GET(v) == MBOX_OWNER_DRV) { + /* + * If the Message Valid bit isn't on, revoke ownership + * of the mailbox and continue waiting for our reply. + */ + if ((v & MBMSGVALID) == 0) { + t4_write_reg(adapter, mbox_ctl, + MBOWNER(MBOX_OWNER_NONE)); + continue; + } + + /* + * We now have our reply. Extract the command return + * value, copy the reply back to our caller's buffer + * (if specified) and revoke ownership of the mailbox. + * We return the (negated) firmware command return + * code (this depends on FW_SUCCESS == 0). + */ + + /* return value in low-order little-endian word */ + v = t4_read_reg(adapter, mbox_data); + if (FW_CMD_RETVAL_GET(v)) + dump_mbox(adapter, "FW Error", mbox_data); + + if (rpl) { + /* request bit in high-order BE word */ + WARN_ON((be32_to_cpu(*(const u32 *)cmd) + & FW_CMD_REQUEST) == 0); + get_mbox_rpl(adapter, rpl, size, mbox_data); + WARN_ON((be32_to_cpu(*(u32 *)rpl) + & FW_CMD_REQUEST) != 0); + } + t4_write_reg(adapter, mbox_ctl, + MBOWNER(MBOX_OWNER_NONE)); + return -FW_CMD_RETVAL_GET(v); + } + } + + /* + * We timed out. Return the error ... + */ + dump_mbox(adapter, "FW Timeout", mbox_data); + return -ETIMEDOUT; +} + +/** + * hash_mac_addr - return the hash value of a MAC address + * @addr: the 48-bit Ethernet MAC address + * + * Hashes a MAC address according to the hash function used by hardware + * inexact (hash) address matching. + */ +static int hash_mac_addr(const u8 *addr) +{ + u32 a = ((u32)addr[0] << 16) | ((u32)addr[1] << 8) | addr[2]; + u32 b = ((u32)addr[3] << 16) | ((u32)addr[4] << 8) | addr[5]; + a ^= b; + a ^= (a >> 12); + a ^= (a >> 6); + return a & 0x3f; +} + +/** + * init_link_config - initialize a link's SW state + * @lc: structure holding the link state + * @caps: link capabilities + * + * Initializes the SW state maintained for each link, including the link's + * capabilities and default speed/flow-control/autonegotiation settings. + */ +static void __devinit init_link_config(struct link_config *lc, + unsigned int caps) +{ + lc->supported = caps; + lc->requested_speed = 0; + lc->speed = 0; + lc->requested_fc = lc->fc = PAUSE_RX | PAUSE_TX; + if (lc->supported & SUPPORTED_Autoneg) { + lc->advertising = lc->supported; + lc->autoneg = AUTONEG_ENABLE; + lc->requested_fc |= PAUSE_AUTONEG; + } else { + lc->advertising = 0; + lc->autoneg = AUTONEG_DISABLE; + } +} + +/** + * t4vf_port_init - initialize port hardware/software state + * @adapter: the adapter + * @pidx: the adapter port index + */ +int __devinit t4vf_port_init(struct adapter *adapter, int pidx) +{ + struct port_info *pi = adap2pinfo(adapter, pidx); + struct fw_vi_cmd vi_cmd, vi_rpl; + struct fw_port_cmd port_cmd, port_rpl; + int v; + u32 word; + + /* + * Execute a VI Read command to get our Virtual Interface information + * like MAC address, etc. + */ + memset(&vi_cmd, 0, sizeof(vi_cmd)); + vi_cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP(FW_VI_CMD) | + FW_CMD_REQUEST | + FW_CMD_READ); + vi_cmd.alloc_to_len16 = cpu_to_be32(FW_LEN16(vi_cmd)); + vi_cmd.type_viid = cpu_to_be16(FW_VI_CMD_VIID(pi->viid)); + v = t4vf_wr_mbox(adapter, &vi_cmd, sizeof(vi_cmd), &vi_rpl); + if (v) + return v; + + BUG_ON(pi->port_id != FW_VI_CMD_PORTID_GET(vi_rpl.portid_pkd)); + pi->rss_size = FW_VI_CMD_RSSSIZE_GET(be16_to_cpu(vi_rpl.rsssize_pkd)); + t4_os_set_hw_addr(adapter, pidx, vi_rpl.mac); + + /* + * If we don't have read access to our port information, we're done + * now. Otherwise, execute a PORT Read command to get it ... + */ + if (!(adapter->params.vfres.r_caps & FW_CMD_CAP_PORT)) + return 0; + + memset(&port_cmd, 0, sizeof(port_cmd)); + port_cmd.op_to_portid = cpu_to_be32(FW_CMD_OP(FW_PORT_CMD) | + FW_CMD_REQUEST | + FW_CMD_READ | + FW_PORT_CMD_PORTID(pi->port_id)); + port_cmd.action_to_len16 = + cpu_to_be32(FW_PORT_CMD_ACTION(FW_PORT_ACTION_GET_PORT_INFO) | + FW_LEN16(port_cmd)); + v = t4vf_wr_mbox(adapter, &port_cmd, sizeof(port_cmd), &port_rpl); + if (v) + return v; + + v = 0; + word = be16_to_cpu(port_rpl.u.info.pcap); + if (word & FW_PORT_CAP_SPEED_100M) + v |= SUPPORTED_100baseT_Full; + if (word & FW_PORT_CAP_SPEED_1G) + v |= SUPPORTED_1000baseT_Full; + if (word & FW_PORT_CAP_SPEED_10G) + v |= SUPPORTED_10000baseT_Full; + if (word & FW_PORT_CAP_ANEG) + v |= SUPPORTED_Autoneg; + init_link_config(&pi->link_cfg, v); + + return 0; +} + +/** + * t4vf_query_params - query FW or device parameters + * @adapter: the adapter + * @nparams: the number of parameters + * @params: the parameter names + * @vals: the parameter values + * + * Reads the values of firmware or device parameters. Up to 7 parameters + * can be queried at once. + */ +int t4vf_query_params(struct adapter *adapter, unsigned int nparams, + const u32 *params, u32 *vals) +{ + int i, ret; + struct fw_params_cmd cmd, rpl; + struct fw_params_param *p; + size_t len16; + + if (nparams > 7) + return -EINVAL; + + memset(&cmd, 0, sizeof(cmd)); + cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP(FW_PARAMS_CMD) | + FW_CMD_REQUEST | + FW_CMD_READ); + len16 = DIV_ROUND_UP(offsetof(struct fw_params_cmd, + param[nparams].mnem), 16); + cmd.retval_len16 = cpu_to_be32(FW_CMD_LEN16(len16)); + for (i = 0, p = &cmd.param[0]; i < nparams; i++, p++) + p->mnem = htonl(*params++); + + ret = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl); + if (ret == 0) + for (i = 0, p = &rpl.param[0]; i < nparams; i++, p++) + *vals++ = be32_to_cpu(p->val); + return ret; +} + +/** + * t4vf_set_params - sets FW or device parameters + * @adapter: the adapter + * @nparams: the number of parameters + * @params: the parameter names + * @vals: the parameter values + * + * Sets the values of firmware or device parameters. Up to 7 parameters + * can be specified at once. + */ +int t4vf_set_params(struct adapter *adapter, unsigned int nparams, + const u32 *params, const u32 *vals) +{ + int i; + struct fw_params_cmd cmd; + struct fw_params_param *p; + size_t len16; + + if (nparams > 7) + return -EINVAL; + + memset(&cmd, 0, sizeof(cmd)); + cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP(FW_PARAMS_CMD) | + FW_CMD_REQUEST | + FW_CMD_WRITE); + len16 = DIV_ROUND_UP(offsetof(struct fw_params_cmd, + param[nparams]), 16); + cmd.retval_len16 = cpu_to_be32(FW_CMD_LEN16(len16)); + for (i = 0, p = &cmd.param[0]; i < nparams; i++, p++) { + p->mnem = cpu_to_be32(*params++); + p->val = cpu_to_be32(*vals++); + } + + return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL); +} + +/** + * t4vf_get_sge_params - retrieve adapter Scatter gather Engine parameters + * @adapter: the adapter + * + * Retrieves various core SGE parameters in the form of hardware SGE + * register values. The caller is responsible for decoding these as + * needed. The SGE parameters are stored in @adapter->params.sge. + */ +int t4vf_get_sge_params(struct adapter *adapter) +{ + struct sge_params *sge_params = &adapter->params.sge; + u32 params[7], vals[7]; + int v; + + params[0] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | + FW_PARAMS_PARAM_XYZ(SGE_CONTROL)); + params[1] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | + FW_PARAMS_PARAM_XYZ(SGE_HOST_PAGE_SIZE)); + params[2] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | + FW_PARAMS_PARAM_XYZ(SGE_FL_BUFFER_SIZE0)); + params[3] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | + FW_PARAMS_PARAM_XYZ(SGE_FL_BUFFER_SIZE1)); + params[4] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | + FW_PARAMS_PARAM_XYZ(SGE_TIMER_VALUE_0_AND_1)); + params[5] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | + FW_PARAMS_PARAM_XYZ(SGE_TIMER_VALUE_2_AND_3)); + params[6] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | + FW_PARAMS_PARAM_XYZ(SGE_TIMER_VALUE_4_AND_5)); + v = t4vf_query_params(adapter, 7, params, vals); + if (v) + return v; + sge_params->sge_control = vals[0]; + sge_params->sge_host_page_size = vals[1]; + sge_params->sge_fl_buffer_size[0] = vals[2]; + sge_params->sge_fl_buffer_size[1] = vals[3]; + sge_params->sge_timer_value_0_and_1 = vals[4]; + sge_params->sge_timer_value_2_and_3 = vals[5]; + sge_params->sge_timer_value_4_and_5 = vals[6]; + + params[0] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | + FW_PARAMS_PARAM_XYZ(SGE_INGRESS_RX_THRESHOLD)); + v = t4vf_query_params(adapter, 1, params, vals); + if (v) + return v; + sge_params->sge_ingress_rx_threshold = vals[0]; + + return 0; +} + +/** + * t4vf_get_vpd_params - retrieve device VPD paremeters + * @adapter: the adapter + * + * Retrives various device Vital Product Data parameters. The parameters + * are stored in @adapter->params.vpd. + */ +int t4vf_get_vpd_params(struct adapter *adapter) +{ + struct vpd_params *vpd_params = &adapter->params.vpd; + u32 params[7], vals[7]; + int v; + + params[0] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_DEV) | + FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DEV_CCLK)); + v = t4vf_query_params(adapter, 1, params, vals); + if (v) + return v; + vpd_params->cclk = vals[0]; + + return 0; +} + +/** + * t4vf_get_dev_params - retrieve device paremeters + * @adapter: the adapter + * + * Retrives various device parameters. The parameters are stored in + * @adapter->params.dev. + */ +int t4vf_get_dev_params(struct adapter *adapter) +{ + struct dev_params *dev_params = &adapter->params.dev; + u32 params[7], vals[7]; + int v; + + params[0] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_DEV) | + FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DEV_FWREV)); + params[1] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_DEV) | + FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DEV_TPREV)); + v = t4vf_query_params(adapter, 2, params, vals); + if (v) + return v; + dev_params->fwrev = vals[0]; + dev_params->tprev = vals[1]; + + return 0; +} + +/** + * t4vf_get_rss_glb_config - retrieve adapter RSS Global Configuration + * @adapter: the adapter + * + * Retrieves global RSS mode and parameters with which we have to live + * and stores them in the @adapter's RSS parameters. + */ +int t4vf_get_rss_glb_config(struct adapter *adapter) +{ + struct rss_params *rss = &adapter->params.rss; + struct fw_rss_glb_config_cmd cmd, rpl; + int v; + + /* + * Execute an RSS Global Configuration read command to retrieve + * our RSS configuration. + */ + memset(&cmd, 0, sizeof(cmd)); + cmd.op_to_write = cpu_to_be32(FW_CMD_OP(FW_RSS_GLB_CONFIG_CMD) | + FW_CMD_REQUEST | + FW_CMD_READ); + cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd)); + v = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl); + if (v) + return v; + + /* + * Transate the big-endian RSS Global Configuration into our + * cpu-endian format based on the RSS mode. We also do first level + * filtering at this point to weed out modes which don't support + * VF Drivers ... + */ + rss->mode = FW_RSS_GLB_CONFIG_CMD_MODE_GET( + be32_to_cpu(rpl.u.manual.mode_pkd)); + switch (rss->mode) { + case FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL: { + u32 word = be32_to_cpu( + rpl.u.basicvirtual.synmapen_to_hashtoeplitz); + + rss->u.basicvirtual.synmapen = + ((word & FW_RSS_GLB_CONFIG_CMD_SYNMAPEN) != 0); + rss->u.basicvirtual.syn4tupenipv6 = + ((word & FW_RSS_GLB_CONFIG_CMD_SYN4TUPENIPV6) != 0); + rss->u.basicvirtual.syn2tupenipv6 = + ((word & FW_RSS_GLB_CONFIG_CMD_SYN2TUPENIPV6) != 0); + rss->u.basicvirtual.syn4tupenipv4 = + ((word & FW_RSS_GLB_CONFIG_CMD_SYN4TUPENIPV4) != 0); + rss->u.basicvirtual.syn2tupenipv4 = + ((word & FW_RSS_GLB_CONFIG_CMD_SYN2TUPENIPV4) != 0); + + rss->u.basicvirtual.ofdmapen = + ((word & FW_RSS_GLB_CONFIG_CMD_OFDMAPEN) != 0); + + rss->u.basicvirtual.tnlmapen = + ((word & FW_RSS_GLB_CONFIG_CMD_TNLMAPEN) != 0); + rss->u.basicvirtual.tnlalllookup = + ((word & FW_RSS_GLB_CONFIG_CMD_TNLALLLKP) != 0); + + rss->u.basicvirtual.hashtoeplitz = + ((word & FW_RSS_GLB_CONFIG_CMD_HASHTOEPLITZ) != 0); + + /* we need at least Tunnel Map Enable to be set */ + if (!rss->u.basicvirtual.tnlmapen) + return -EINVAL; + break; + } + + default: + /* all unknown/unsupported RSS modes result in an error */ + return -EINVAL; + } + + return 0; +} + +/** + * t4vf_get_vfres - retrieve VF resource limits + * @adapter: the adapter + * + * Retrieves configured resource limits and capabilities for a virtual + * function. The results are stored in @adapter->vfres. + */ +int t4vf_get_vfres(struct adapter *adapter) +{ + struct vf_resources *vfres = &adapter->params.vfres; + struct fw_pfvf_cmd cmd, rpl; + int v; + u32 word; + + /* + * Execute PFVF Read command to get VF resource limits; bail out early + * with error on command failure. + */ + memset(&cmd, 0, sizeof(cmd)); + cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP(FW_PFVF_CMD) | + FW_CMD_REQUEST | + FW_CMD_READ); + cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd)); + v = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl); + if (v) + return v; + + /* + * Extract VF resource limits and return success. + */ + word = be32_to_cpu(rpl.niqflint_niq); + vfres->niqflint = FW_PFVF_CMD_NIQFLINT_GET(word); + vfres->niq = FW_PFVF_CMD_NIQ_GET(word); + + word = be32_to_cpu(rpl.type_to_neq); + vfres->neq = FW_PFVF_CMD_NEQ_GET(word); + vfres->pmask = FW_PFVF_CMD_PMASK_GET(word); + + word = be32_to_cpu(rpl.tc_to_nexactf); + vfres->tc = FW_PFVF_CMD_TC_GET(word); + vfres->nvi = FW_PFVF_CMD_NVI_GET(word); + vfres->nexactf = FW_PFVF_CMD_NEXACTF_GET(word); + + word = be32_to_cpu(rpl.r_caps_to_nethctrl); + vfres->r_caps = FW_PFVF_CMD_R_CAPS_GET(word); + vfres->wx_caps = FW_PFVF_CMD_WX_CAPS_GET(word); + vfres->nethctrl = FW_PFVF_CMD_NETHCTRL_GET(word); + + return 0; +} + +/** + * t4vf_read_rss_vi_config - read a VI's RSS configuration + * @adapter: the adapter + * @viid: Virtual Interface ID + * @config: pointer to host-native VI RSS Configuration buffer + * + * Reads the Virtual Interface's RSS configuration information and + * translates it into CPU-native format. + */ +int t4vf_read_rss_vi_config(struct adapter *adapter, unsigned int viid, + union rss_vi_config *config) +{ + struct fw_rss_vi_config_cmd cmd, rpl; + int v; + + memset(&cmd, 0, sizeof(cmd)); + cmd.op_to_viid = cpu_to_be32(FW_CMD_OP(FW_RSS_VI_CONFIG_CMD) | + FW_CMD_REQUEST | + FW_CMD_READ | + FW_RSS_VI_CONFIG_CMD_VIID(viid)); + cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd)); + v = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl); + if (v) + return v; + + switch (adapter->params.rss.mode) { + case FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL: { + u32 word = be32_to_cpu(rpl.u.basicvirtual.defaultq_to_udpen); + + config->basicvirtual.ip6fourtupen = + ((word & FW_RSS_VI_CONFIG_CMD_IP6FOURTUPEN) != 0); + config->basicvirtual.ip6twotupen = + ((word & FW_RSS_VI_CONFIG_CMD_IP6TWOTUPEN) != 0); + config->basicvirtual.ip4fourtupen = + ((word & FW_RSS_VI_CONFIG_CMD_IP4FOURTUPEN) != 0); + config->basicvirtual.ip4twotupen = + ((word & FW_RSS_VI_CONFIG_CMD_IP4TWOTUPEN) != 0); + config->basicvirtual.udpen = + ((word & FW_RSS_VI_CONFIG_CMD_UDPEN) != 0); + config->basicvirtual.defaultq = + FW_RSS_VI_CONFIG_CMD_DEFAULTQ_GET(word); + break; + } + + default: + return -EINVAL; + } + + return 0; +} + +/** + * t4vf_write_rss_vi_config - write a VI's RSS configuration + * @adapter: the adapter + * @viid: Virtual Interface ID + * @config: pointer to host-native VI RSS Configuration buffer + * + * Write the Virtual Interface's RSS configuration information + * (translating it into firmware-native format before writing). + */ +int t4vf_write_rss_vi_config(struct adapter *adapter, unsigned int viid, + union rss_vi_config *config) +{ + struct fw_rss_vi_config_cmd cmd, rpl; + + memset(&cmd, 0, sizeof(cmd)); + cmd.op_to_viid = cpu_to_be32(FW_CMD_OP(FW_RSS_VI_CONFIG_CMD) | + FW_CMD_REQUEST | + FW_CMD_WRITE | + FW_RSS_VI_CONFIG_CMD_VIID(viid)); + cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd)); + switch (adapter->params.rss.mode) { + case FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL: { + u32 word = 0; + + if (config->basicvirtual.ip6fourtupen) + word |= FW_RSS_VI_CONFIG_CMD_IP6FOURTUPEN; + if (config->basicvirtual.ip6twotupen) + word |= FW_RSS_VI_CONFIG_CMD_IP6TWOTUPEN; + if (config->basicvirtual.ip4fourtupen) + word |= FW_RSS_VI_CONFIG_CMD_IP4FOURTUPEN; + if (config->basicvirtual.ip4twotupen) + word |= FW_RSS_VI_CONFIG_CMD_IP4TWOTUPEN; + if (config->basicvirtual.udpen) + word |= FW_RSS_VI_CONFIG_CMD_UDPEN; + word |= FW_RSS_VI_CONFIG_CMD_DEFAULTQ( + config->basicvirtual.defaultq); + cmd.u.basicvirtual.defaultq_to_udpen = cpu_to_be32(word); + break; + } + + default: + return -EINVAL; + } + + return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl); +} + +/** + * t4vf_config_rss_range - configure a portion of the RSS mapping table + * @adapter: the adapter + * @viid: Virtual Interface of RSS Table Slice + * @start: starting entry in the table to write + * @n: how many table entries to write + * @rspq: values for the "Response Queue" (Ingress Queue) lookup table + * @nrspq: number of values in @rspq + * + * Programs the selected part of the VI's RSS mapping table with the + * provided values. If @nrspq < @n the supplied values are used repeatedly + * until the full table range is populated. + * + * The caller must ensure the values in @rspq are in the range 0..1023. + */ +int t4vf_config_rss_range(struct adapter *adapter, unsigned int viid, + int start, int n, const u16 *rspq, int nrspq) +{ + const u16 *rsp = rspq; + const u16 *rsp_end = rspq+nrspq; + struct fw_rss_ind_tbl_cmd cmd; + + /* + * Initialize firmware command template to write the RSS table. + */ + memset(&cmd, 0, sizeof(cmd)); + cmd.op_to_viid = cpu_to_be32(FW_CMD_OP(FW_RSS_IND_TBL_CMD) | + FW_CMD_REQUEST | + FW_CMD_WRITE | + FW_RSS_IND_TBL_CMD_VIID(viid)); + cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd)); + + /* + * Each firmware RSS command can accommodate up to 32 RSS Ingress + * Queue Identifiers. These Ingress Queue IDs are packed three to + * a 32-bit word as 10-bit values with the upper remaining 2 bits + * reserved. + */ + while (n > 0) { + __be32 *qp = &cmd.iq0_to_iq2; + int nq = min(n, 32); + int ret; + + /* + * Set up the firmware RSS command header to send the next + * "nq" Ingress Queue IDs to the firmware. + */ + cmd.niqid = cpu_to_be16(nq); + cmd.startidx = cpu_to_be16(start); + + /* + * "nq" more done for the start of the next loop. + */ + start += nq; + n -= nq; + + /* + * While there are still Ingress Queue IDs to stuff into the + * current firmware RSS command, retrieve them from the + * Ingress Queue ID array and insert them into the command. + */ + while (nq > 0) { + /* + * Grab up to the next 3 Ingress Queue IDs (wrapping + * around the Ingress Queue ID array if necessary) and + * insert them into the firmware RSS command at the + * current 3-tuple position within the commad. + */ + u16 qbuf[3]; + u16 *qbp = qbuf; + int nqbuf = min(3, nq); + + nq -= nqbuf; + qbuf[0] = qbuf[1] = qbuf[2] = 0; + while (nqbuf) { + nqbuf--; + *qbp++ = *rsp++; + if (rsp >= rsp_end) + rsp = rspq; + } + *qp++ = cpu_to_be32(FW_RSS_IND_TBL_CMD_IQ0(qbuf[0]) | + FW_RSS_IND_TBL_CMD_IQ1(qbuf[1]) | + FW_RSS_IND_TBL_CMD_IQ2(qbuf[2])); + } + + /* + * Send this portion of the RRS table update to the firmware; + * bail out on any errors. + */ + ret = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL); + if (ret) + return ret; + } + return 0; +} + +/** + * t4vf_alloc_vi - allocate a virtual interface on a port + * @adapter: the adapter + * @port_id: physical port associated with the VI + * + * Allocate a new Virtual Interface and bind it to the indicated + * physical port. Return the new Virtual Interface Identifier on + * success, or a [negative] error number on failure. + */ +int t4vf_alloc_vi(struct adapter *adapter, int port_id) +{ + struct fw_vi_cmd cmd, rpl; + int v; + + /* + * Execute a VI command to allocate Virtual Interface and return its + * VIID. + */ + memset(&cmd, 0, sizeof(cmd)); + cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP(FW_VI_CMD) | + FW_CMD_REQUEST | + FW_CMD_WRITE | + FW_CMD_EXEC); + cmd.alloc_to_len16 = cpu_to_be32(FW_LEN16(cmd) | + FW_VI_CMD_ALLOC); + cmd.portid_pkd = FW_VI_CMD_PORTID(port_id); + v = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl); + if (v) + return v; + + return FW_VI_CMD_VIID_GET(be16_to_cpu(rpl.type_viid)); +} + +/** + * t4vf_free_vi -- free a virtual interface + * @adapter: the adapter + * @viid: the virtual interface identifier + * + * Free a previously allocated Virtual Interface. Return an error on + * failure. + */ +int t4vf_free_vi(struct adapter *adapter, int viid) +{ + struct fw_vi_cmd cmd; + + /* + * Execute a VI command to free the Virtual Interface. + */ + memset(&cmd, 0, sizeof(cmd)); + cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP(FW_VI_CMD) | + FW_CMD_REQUEST | + FW_CMD_EXEC); + cmd.alloc_to_len16 = cpu_to_be32(FW_LEN16(cmd) | + FW_VI_CMD_FREE); + cmd.type_viid = cpu_to_be16(FW_VI_CMD_VIID(viid)); + return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL); +} + +/** + * t4vf_enable_vi - enable/disable a virtual interface + * @adapter: the adapter + * @viid: the Virtual Interface ID + * @rx_en: 1=enable Rx, 0=disable Rx + * @tx_en: 1=enable Tx, 0=disable Tx + * + * Enables/disables a virtual interface. + */ +int t4vf_enable_vi(struct adapter *adapter, unsigned int viid, + bool rx_en, bool tx_en) +{ + struct fw_vi_enable_cmd cmd; + + memset(&cmd, 0, sizeof(cmd)); + cmd.op_to_viid = cpu_to_be32(FW_CMD_OP(FW_VI_ENABLE_CMD) | + FW_CMD_REQUEST | + FW_CMD_EXEC | + FW_VI_ENABLE_CMD_VIID(viid)); + cmd.ien_to_len16 = cpu_to_be32(FW_VI_ENABLE_CMD_IEN(rx_en) | + FW_VI_ENABLE_CMD_EEN(tx_en) | + FW_LEN16(cmd)); + return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL); +} + +/** + * t4vf_identify_port - identify a VI's port by blinking its LED + * @adapter: the adapter + * @viid: the Virtual Interface ID + * @nblinks: how many times to blink LED at 2.5 Hz + * + * Identifies a VI's port by blinking its LED. + */ +int t4vf_identify_port(struct adapter *adapter, unsigned int viid, + unsigned int nblinks) +{ + struct fw_vi_enable_cmd cmd; + + memset(&cmd, 0, sizeof(cmd)); + cmd.op_to_viid = cpu_to_be32(FW_CMD_OP(FW_VI_ENABLE_CMD) | + FW_CMD_REQUEST | + FW_CMD_EXEC | + FW_VI_ENABLE_CMD_VIID(viid)); + cmd.ien_to_len16 = cpu_to_be32(FW_VI_ENABLE_CMD_LED | + FW_LEN16(cmd)); + cmd.blinkdur = cpu_to_be16(nblinks); + return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL); +} + +/** + * t4vf_set_rxmode - set Rx properties of a virtual interface + * @adapter: the adapter + * @viid: the VI id + * @mtu: the new MTU or -1 for no change + * @promisc: 1 to enable promiscuous mode, 0 to disable it, -1 no change + * @all_multi: 1 to enable all-multi mode, 0 to disable it, -1 no change + * @bcast: 1 to enable broadcast Rx, 0 to disable it, -1 no change + * @vlanex: 1 to enable hardware VLAN Tag extraction, 0 to disable it, + * -1 no change + * + * Sets Rx properties of a virtual interface. + */ +int t4vf_set_rxmode(struct adapter *adapter, unsigned int viid, + int mtu, int promisc, int all_multi, int bcast, int vlanex, + bool sleep_ok) +{ + struct fw_vi_rxmode_cmd cmd; + + /* convert to FW values */ + if (mtu < 0) + mtu = FW_VI_RXMODE_CMD_MTU_MASK; + if (promisc < 0) + promisc = FW_VI_RXMODE_CMD_PROMISCEN_MASK; + if (all_multi < 0) + all_multi = FW_VI_RXMODE_CMD_ALLMULTIEN_MASK; + if (bcast < 0) + bcast = FW_VI_RXMODE_CMD_BROADCASTEN_MASK; + if (vlanex < 0) + vlanex = FW_VI_RXMODE_CMD_VLANEXEN_MASK; + + memset(&cmd, 0, sizeof(cmd)); + cmd.op_to_viid = cpu_to_be32(FW_CMD_OP(FW_VI_RXMODE_CMD) | + FW_CMD_REQUEST | + FW_CMD_WRITE | + FW_VI_RXMODE_CMD_VIID(viid)); + cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd)); + cmd.mtu_to_vlanexen = + cpu_to_be32(FW_VI_RXMODE_CMD_MTU(mtu) | + FW_VI_RXMODE_CMD_PROMISCEN(promisc) | + FW_VI_RXMODE_CMD_ALLMULTIEN(all_multi) | + FW_VI_RXMODE_CMD_BROADCASTEN(bcast) | + FW_VI_RXMODE_CMD_VLANEXEN(vlanex)); + return t4vf_wr_mbox_core(adapter, &cmd, sizeof(cmd), NULL, sleep_ok); +} + +/** + * t4vf_alloc_mac_filt - allocates exact-match filters for MAC addresses + * @adapter: the adapter + * @viid: the Virtual Interface Identifier + * @free: if true any existing filters for this VI id are first removed + * @naddr: the number of MAC addresses to allocate filters for (up to 7) + * @addr: the MAC address(es) + * @idx: where to store the index of each allocated filter + * @hash: pointer to hash address filter bitmap + * @sleep_ok: call is allowed to sleep + * + * Allocates an exact-match filter for each of the supplied addresses and + * sets it to the corresponding address. If @idx is not %NULL it should + * have at least @naddr entries, each of which will be set to the index of + * the filter allocated for the corresponding MAC address. If a filter + * could not be allocated for an address its index is set to 0xffff. + * If @hash is not %NULL addresses that fail to allocate an exact filter + * are hashed and update the hash filter bitmap pointed at by @hash. + * + * Returns a negative error number or the number of filters allocated. + */ +int t4vf_alloc_mac_filt(struct adapter *adapter, unsigned int viid, bool free, + unsigned int naddr, const u8 **addr, u16 *idx, + u64 *hash, bool sleep_ok) +{ + int i, ret; + struct fw_vi_mac_cmd cmd, rpl; + struct fw_vi_mac_exact *p; + size_t len16; + + if (naddr > ARRAY_SIZE(cmd.u.exact)) + return -EINVAL; + len16 = DIV_ROUND_UP(offsetof(struct fw_vi_mac_cmd, + u.exact[naddr]), 16); + + memset(&cmd, 0, sizeof(cmd)); + cmd.op_to_viid = cpu_to_be32(FW_CMD_OP(FW_VI_MAC_CMD) | + FW_CMD_REQUEST | + FW_CMD_WRITE | + (free ? FW_CMD_EXEC : 0) | + FW_VI_MAC_CMD_VIID(viid)); + cmd.freemacs_to_len16 = cpu_to_be32(FW_VI_MAC_CMD_FREEMACS(free) | + FW_CMD_LEN16(len16)); + + for (i = 0, p = cmd.u.exact; i < naddr; i++, p++) { + p->valid_to_idx = + cpu_to_be16(FW_VI_MAC_CMD_VALID | + FW_VI_MAC_CMD_IDX(FW_VI_MAC_ADD_MAC)); + memcpy(p->macaddr, addr[i], sizeof(p->macaddr)); + } + + ret = t4vf_wr_mbox_core(adapter, &cmd, sizeof(cmd), &rpl, sleep_ok); + if (ret) + return ret; + + for (i = 0, p = rpl.u.exact; i < naddr; i++, p++) { + u16 index = FW_VI_MAC_CMD_IDX_GET(be16_to_cpu(p->valid_to_idx)); + + if (idx) + idx[i] = (index >= FW_CLS_TCAM_NUM_ENTRIES + ? 0xffff + : index); + if (index < FW_CLS_TCAM_NUM_ENTRIES) + ret++; + else if (hash) + *hash |= (1 << hash_mac_addr(addr[i])); + } + return ret; +} + +/** + * t4vf_change_mac - modifies the exact-match filter for a MAC address + * @adapter: the adapter + * @viid: the Virtual Interface ID + * @idx: index of existing filter for old value of MAC address, or -1 + * @addr: the new MAC address value + * @persist: if idx < 0, the new MAC allocation should be persistent + * + * Modifies an exact-match filter and sets it to the new MAC address. + * Note that in general it is not possible to modify the value of a given + * filter so the generic way to modify an address filter is to free the + * one being used by the old address value and allocate a new filter for + * the new address value. @idx can be -1 if the address is a new + * addition. + * + * Returns a negative error number or the index of the filter with the new + * MAC value. + */ +int t4vf_change_mac(struct adapter *adapter, unsigned int viid, + int idx, const u8 *addr, bool persist) +{ + int ret; + struct fw_vi_mac_cmd cmd, rpl; + struct fw_vi_mac_exact *p = &cmd.u.exact[0]; + size_t len16 = DIV_ROUND_UP(offsetof(struct fw_vi_mac_cmd, + u.exact[1]), 16); + + /* + * If this is a new allocation, determine whether it should be + * persistent (across a "freemacs" operation) or not. + */ + if (idx < 0) + idx = persist ? FW_VI_MAC_ADD_PERSIST_MAC : FW_VI_MAC_ADD_MAC; + + memset(&cmd, 0, sizeof(cmd)); + cmd.op_to_viid = cpu_to_be32(FW_CMD_OP(FW_VI_MAC_CMD) | + FW_CMD_REQUEST | + FW_CMD_WRITE | + FW_VI_MAC_CMD_VIID(viid)); + cmd.freemacs_to_len16 = cpu_to_be32(FW_CMD_LEN16(len16)); + p->valid_to_idx = cpu_to_be16(FW_VI_MAC_CMD_VALID | + FW_VI_MAC_CMD_IDX(idx)); + memcpy(p->macaddr, addr, sizeof(p->macaddr)); + + ret = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl); + if (ret == 0) { + p = &rpl.u.exact[0]; + ret = FW_VI_MAC_CMD_IDX_GET(be16_to_cpu(p->valid_to_idx)); + if (ret >= FW_CLS_TCAM_NUM_ENTRIES) + ret = -ENOMEM; + } + return ret; +} + +/** + * t4vf_set_addr_hash - program the MAC inexact-match hash filter + * @adapter: the adapter + * @viid: the Virtual Interface Identifier + * @ucast: whether the hash filter should also match unicast addresses + * @vec: the value to be written to the hash filter + * @sleep_ok: call is allowed to sleep + * + * Sets the 64-bit inexact-match hash filter for a virtual interface. + */ +int t4vf_set_addr_hash(struct adapter *adapter, unsigned int viid, + bool ucast, u64 vec, bool sleep_ok) +{ + struct fw_vi_mac_cmd cmd; + size_t len16 = DIV_ROUND_UP(offsetof(struct fw_vi_mac_cmd, + u.exact[0]), 16); + + memset(&cmd, 0, sizeof(cmd)); + cmd.op_to_viid = cpu_to_be32(FW_CMD_OP(FW_VI_MAC_CMD) | + FW_CMD_REQUEST | + FW_CMD_WRITE | + FW_VI_ENABLE_CMD_VIID(viid)); + cmd.freemacs_to_len16 = cpu_to_be32(FW_VI_MAC_CMD_HASHVECEN | + FW_VI_MAC_CMD_HASHUNIEN(ucast) | + FW_CMD_LEN16(len16)); + cmd.u.hash.hashvec = cpu_to_be64(vec); + return t4vf_wr_mbox_core(adapter, &cmd, sizeof(cmd), NULL, sleep_ok); +} + +/** + * t4vf_get_port_stats - collect "port" statistics + * @adapter: the adapter + * @pidx: the port index + * @s: the stats structure to fill + * + * Collect statistics for the "port"'s Virtual Interface. + */ +int t4vf_get_port_stats(struct adapter *adapter, int pidx, + struct t4vf_port_stats *s) +{ + struct port_info *pi = adap2pinfo(adapter, pidx); + struct fw_vi_stats_vf fwstats; + unsigned int rem = VI_VF_NUM_STATS; + __be64 *fwsp = (__be64 *)&fwstats; + + /* + * Grab the Virtual Interface statistics a chunk at a time via mailbox + * commands. We could use a Work Request and get all of them at once + * but that's an asynchronous interface which is awkward to use. + */ + while (rem) { + unsigned int ix = VI_VF_NUM_STATS - rem; + unsigned int nstats = min(6U, rem); + struct fw_vi_stats_cmd cmd, rpl; + size_t len = (offsetof(struct fw_vi_stats_cmd, u) + + sizeof(struct fw_vi_stats_ctl)); + size_t len16 = DIV_ROUND_UP(len, 16); + int ret; + + memset(&cmd, 0, sizeof(cmd)); + cmd.op_to_viid = cpu_to_be32(FW_CMD_OP(FW_VI_STATS_CMD) | + FW_VI_STATS_CMD_VIID(pi->viid) | + FW_CMD_REQUEST | + FW_CMD_READ); + cmd.retval_len16 = cpu_to_be32(FW_CMD_LEN16(len16)); + cmd.u.ctl.nstats_ix = + cpu_to_be16(FW_VI_STATS_CMD_IX(ix) | + FW_VI_STATS_CMD_NSTATS(nstats)); + ret = t4vf_wr_mbox_ns(adapter, &cmd, len, &rpl); + if (ret) + return ret; + + memcpy(fwsp, &rpl.u.ctl.stat0, sizeof(__be64) * nstats); + + rem -= nstats; + fwsp += nstats; + } + + /* + * Translate firmware statistics into host native statistics. + */ + s->tx_bcast_bytes = be64_to_cpu(fwstats.tx_bcast_bytes); + s->tx_bcast_frames = be64_to_cpu(fwstats.tx_bcast_frames); + s->tx_mcast_bytes = be64_to_cpu(fwstats.tx_mcast_bytes); + s->tx_mcast_frames = be64_to_cpu(fwstats.tx_mcast_frames); + s->tx_ucast_bytes = be64_to_cpu(fwstats.tx_ucast_bytes); + s->tx_ucast_frames = be64_to_cpu(fwstats.tx_ucast_frames); + s->tx_drop_frames = be64_to_cpu(fwstats.tx_drop_frames); + s->tx_offload_bytes = be64_to_cpu(fwstats.tx_offload_bytes); + s->tx_offload_frames = be64_to_cpu(fwstats.tx_offload_frames); + + s->rx_bcast_bytes = be64_to_cpu(fwstats.rx_bcast_bytes); + s->rx_bcast_frames = be64_to_cpu(fwstats.rx_bcast_frames); + s->rx_mcast_bytes = be64_to_cpu(fwstats.rx_mcast_bytes); + s->rx_mcast_frames = be64_to_cpu(fwstats.rx_mcast_frames); + s->rx_ucast_bytes = be64_to_cpu(fwstats.rx_ucast_bytes); + s->rx_ucast_frames = be64_to_cpu(fwstats.rx_ucast_frames); + + s->rx_err_frames = be64_to_cpu(fwstats.rx_err_frames); + + return 0; +} + +/** + * t4vf_iq_free - free an ingress queue and its free lists + * @adapter: the adapter + * @iqtype: the ingress queue type (FW_IQ_TYPE_FL_INT_CAP, etc.) + * @iqid: ingress queue ID + * @fl0id: FL0 queue ID or 0xffff if no attached FL0 + * @fl1id: FL1 queue ID or 0xffff if no attached FL1 + * + * Frees an ingress queue and its associated free lists, if any. + */ +int t4vf_iq_free(struct adapter *adapter, unsigned int iqtype, + unsigned int iqid, unsigned int fl0id, unsigned int fl1id) +{ + struct fw_iq_cmd cmd; + + memset(&cmd, 0, sizeof(cmd)); + cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP(FW_IQ_CMD) | + FW_CMD_REQUEST | + FW_CMD_EXEC); + cmd.alloc_to_len16 = cpu_to_be32(FW_IQ_CMD_FREE | + FW_LEN16(cmd)); + cmd.type_to_iqandstindex = + cpu_to_be32(FW_IQ_CMD_TYPE(iqtype)); + + cmd.iqid = cpu_to_be16(iqid); + cmd.fl0id = cpu_to_be16(fl0id); + cmd.fl1id = cpu_to_be16(fl1id); + return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL); +} + +/** + * t4vf_eth_eq_free - free an Ethernet egress queue + * @adapter: the adapter + * @eqid: egress queue ID + * + * Frees an Ethernet egress queue. + */ +int t4vf_eth_eq_free(struct adapter *adapter, unsigned int eqid) +{ + struct fw_eq_eth_cmd cmd; + + memset(&cmd, 0, sizeof(cmd)); + cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP(FW_EQ_ETH_CMD) | + FW_CMD_REQUEST | + FW_CMD_EXEC); + cmd.alloc_to_len16 = cpu_to_be32(FW_EQ_ETH_CMD_FREE | + FW_LEN16(cmd)); + cmd.eqid_pkd = cpu_to_be32(FW_EQ_ETH_CMD_EQID(eqid)); + return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL); +} + +/** + * t4vf_handle_fw_rpl - process a firmware reply message + * @adapter: the adapter + * @rpl: start of the firmware message + * + * Processes a firmware message, such as link state change messages. + */ +int t4vf_handle_fw_rpl(struct adapter *adapter, const __be64 *rpl) +{ + struct fw_cmd_hdr *cmd_hdr = (struct fw_cmd_hdr *)rpl; + u8 opcode = FW_CMD_OP_GET(be32_to_cpu(cmd_hdr->hi)); + + switch (opcode) { + case FW_PORT_CMD: { + /* + * Link/module state change message. + */ + const struct fw_port_cmd *port_cmd = (void *)rpl; + u32 word; + int action, port_id, link_ok, speed, fc, pidx; + + /* + * Extract various fields from port status change message. + */ + action = FW_PORT_CMD_ACTION_GET( + be32_to_cpu(port_cmd->action_to_len16)); + if (action != FW_PORT_ACTION_GET_PORT_INFO) { + dev_err(adapter->pdev_dev, + "Unknown firmware PORT reply action %x\n", + action); + break; + } + + port_id = FW_PORT_CMD_PORTID_GET( + be32_to_cpu(port_cmd->op_to_portid)); + + word = be32_to_cpu(port_cmd->u.info.lstatus_to_modtype); + link_ok = (word & FW_PORT_CMD_LSTATUS) != 0; + speed = 0; + fc = 0; + if (word & FW_PORT_CMD_RXPAUSE) + fc |= PAUSE_RX; + if (word & FW_PORT_CMD_TXPAUSE) + fc |= PAUSE_TX; + if (word & FW_PORT_CMD_LSPEED(FW_PORT_CAP_SPEED_100M)) + speed = SPEED_100; + else if (word & FW_PORT_CMD_LSPEED(FW_PORT_CAP_SPEED_1G)) + speed = SPEED_1000; + else if (word & FW_PORT_CMD_LSPEED(FW_PORT_CAP_SPEED_10G)) + speed = SPEED_10000; + + /* + * Scan all of our "ports" (Virtual Interfaces) looking for + * those bound to the physical port which has changed. If + * our recorded state doesn't match the current state, + * signal that change to the OS code. + */ + for_each_port(adapter, pidx) { + struct port_info *pi = adap2pinfo(adapter, pidx); + struct link_config *lc; + + if (pi->port_id != port_id) + continue; + + lc = &pi->link_cfg; + if (link_ok != lc->link_ok || speed != lc->speed || + fc != lc->fc) { + /* something changed */ + lc->link_ok = link_ok; + lc->speed = speed; + lc->fc = fc; + t4vf_os_link_changed(adapter, pidx, link_ok); + } + } + break; + } + + default: + dev_err(adapter->pdev_dev, "Unknown firmware reply %X\n", + opcode); + } + return 0; +} |