diff options
Diffstat (limited to 'drivers/net/mv643xx_eth.c')
| -rw-r--r-- | drivers/net/mv643xx_eth.c | 4557 |
1 files changed, 1885 insertions, 2672 deletions
diff --git a/drivers/net/mv643xx_eth.c b/drivers/net/mv643xx_eth.c index b7915cdcc6a..8a97a0066a8 100644 --- a/drivers/net/mv643xx_eth.c +++ b/drivers/net/mv643xx_eth.c @@ -34,406 +34,145 @@ * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + #include <linux/init.h> #include <linux/dma-mapping.h> #include <linux/in.h> -#include <linux/ip.h> #include <linux/tcp.h> #include <linux/udp.h> #include <linux/etherdevice.h> - -#include <linux/bitops.h> #include <linux/delay.h> #include <linux/ethtool.h> #include <linux/platform_device.h> - #include <linux/module.h> #include <linux/kernel.h> #include <linux/spinlock.h> #include <linux/workqueue.h> #include <linux/mii.h> - #include <linux/mv643xx_eth.h> - #include <asm/io.h> #include <asm/types.h> -#include <asm/pgtable.h> #include <asm/system.h> -#include <asm/delay.h> -#include <asm/dma-mapping.h> -#define MV643XX_CHECKSUM_OFFLOAD_TX -#define MV643XX_NAPI -#define MV643XX_TX_FAST_REFILL -#undef MV643XX_COAL +static char mv643xx_eth_driver_name[] = "mv643xx_eth"; +static char mv643xx_eth_driver_version[] = "1.1"; -#define MV643XX_TX_COAL 100 -#ifdef MV643XX_COAL -#define MV643XX_RX_COAL 100 -#endif +#define MV643XX_ETH_CHECKSUM_OFFLOAD_TX +#define MV643XX_ETH_NAPI +#define MV643XX_ETH_TX_FAST_REFILL -#ifdef MV643XX_CHECKSUM_OFFLOAD_TX +#ifdef MV643XX_ETH_CHECKSUM_OFFLOAD_TX #define MAX_DESCS_PER_SKB (MAX_SKB_FRAGS + 1) #else #define MAX_DESCS_PER_SKB 1 #endif -#define ETH_VLAN_HLEN 4 -#define ETH_FCS_LEN 4 -#define ETH_HW_IP_ALIGN 2 /* hw aligns IP header */ -#define ETH_WRAPPER_LEN (ETH_HW_IP_ALIGN + ETH_HLEN + \ - ETH_VLAN_HLEN + ETH_FCS_LEN) -#define ETH_RX_SKB_SIZE (dev->mtu + ETH_WRAPPER_LEN + \ - dma_get_cache_alignment()) - /* * Registers shared between all ports. */ -#define PHY_ADDR_REG 0x0000 -#define SMI_REG 0x0004 -#define WINDOW_BASE(i) (0x0200 + ((i) << 3)) -#define WINDOW_SIZE(i) (0x0204 + ((i) << 3)) -#define WINDOW_REMAP_HIGH(i) (0x0280 + ((i) << 2)) -#define WINDOW_BAR_ENABLE 0x0290 -#define WINDOW_PROTECT(i) (0x0294 + ((i) << 4)) +#define PHY_ADDR 0x0000 +#define SMI_REG 0x0004 +#define WINDOW_BASE(w) (0x0200 + ((w) << 3)) +#define WINDOW_SIZE(w) (0x0204 + ((w) << 3)) +#define WINDOW_REMAP_HIGH(w) (0x0280 + ((w) << 2)) +#define WINDOW_BAR_ENABLE 0x0290 +#define WINDOW_PROTECT(w) (0x0294 + ((w) << 4)) /* * Per-port registers. */ -#define PORT_CONFIG_REG(p) (0x0400 + ((p) << 10)) -#define PORT_CONFIG_EXTEND_REG(p) (0x0404 + ((p) << 10)) -#define MAC_ADDR_LOW(p) (0x0414 + ((p) << 10)) -#define MAC_ADDR_HIGH(p) (0x0418 + ((p) << 10)) -#define SDMA_CONFIG_REG(p) (0x041c + ((p) << 10)) -#define PORT_SERIAL_CONTROL_REG(p) (0x043c + ((p) << 10)) -#define PORT_STATUS_REG(p) (0x0444 + ((p) << 10)) -#define TRANSMIT_QUEUE_COMMAND_REG(p) (0x0448 + ((p) << 10)) -#define MAXIMUM_TRANSMIT_UNIT(p) (0x0458 + ((p) << 10)) -#define INTERRUPT_CAUSE_REG(p) (0x0460 + ((p) << 10)) -#define INTERRUPT_CAUSE_EXTEND_REG(p) (0x0464 + ((p) << 10)) -#define INTERRUPT_MASK_REG(p) (0x0468 + ((p) << 10)) -#define INTERRUPT_EXTEND_MASK_REG(p) (0x046c + ((p) << 10)) -#define TX_FIFO_URGENT_THRESHOLD_REG(p) (0x0474 + ((p) << 10)) -#define RX_CURRENT_QUEUE_DESC_PTR_0(p) (0x060c + ((p) << 10)) -#define RECEIVE_QUEUE_COMMAND_REG(p) (0x0680 + ((p) << 10)) -#define TX_CURRENT_QUEUE_DESC_PTR_0(p) (0x06c0 + ((p) << 10)) -#define MIB_COUNTERS_BASE(p) (0x1000 + ((p) << 7)) -#define DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE(p) (0x1400 + ((p) << 10)) -#define DA_FILTER_OTHER_MULTICAST_TABLE_BASE(p) (0x1500 + ((p) << 10)) -#define DA_FILTER_UNICAST_TABLE_BASE(p) (0x1600 + ((p) << 10)) - -/* These macros describe Ethernet Port configuration reg (Px_cR) bits */ -#define UNICAST_NORMAL_MODE (0 << 0) -#define UNICAST_PROMISCUOUS_MODE (1 << 0) -#define DEFAULT_RX_QUEUE(queue) ((queue) << 1) -#define DEFAULT_RX_ARP_QUEUE(queue) ((queue) << 4) -#define RECEIVE_BC_IF_NOT_IP_OR_ARP (0 << 7) -#define REJECT_BC_IF_NOT_IP_OR_ARP (1 << 7) -#define RECEIVE_BC_IF_IP (0 << 8) -#define REJECT_BC_IF_IP (1 << 8) -#define RECEIVE_BC_IF_ARP (0 << 9) -#define REJECT_BC_IF_ARP (1 << 9) -#define TX_AM_NO_UPDATE_ERROR_SUMMARY (1 << 12) -#define CAPTURE_TCP_FRAMES_DIS (0 << 14) -#define CAPTURE_TCP_FRAMES_EN (1 << 14) -#define CAPTURE_UDP_FRAMES_DIS (0 << 15) -#define CAPTURE_UDP_FRAMES_EN (1 << 15) -#define DEFAULT_RX_TCP_QUEUE(queue) ((queue) << 16) -#define DEFAULT_RX_UDP_QUEUE(queue) ((queue) << 19) -#define DEFAULT_RX_BPDU_QUEUE(queue) ((queue) << 22) - -#define PORT_CONFIG_DEFAULT_VALUE \ - UNICAST_NORMAL_MODE | \ - DEFAULT_RX_QUEUE(0) | \ - DEFAULT_RX_ARP_QUEUE(0) | \ - RECEIVE_BC_IF_NOT_IP_OR_ARP | \ - RECEIVE_BC_IF_IP | \ - RECEIVE_BC_IF_ARP | \ - CAPTURE_TCP_FRAMES_DIS | \ - CAPTURE_UDP_FRAMES_DIS | \ - DEFAULT_RX_TCP_QUEUE(0) | \ - DEFAULT_RX_UDP_QUEUE(0) | \ - DEFAULT_RX_BPDU_QUEUE(0) - -/* These macros describe Ethernet Port configuration extend reg (Px_cXR) bits*/ -#define CLASSIFY_EN (1 << 0) -#define SPAN_BPDU_PACKETS_AS_NORMAL (0 << 1) -#define SPAN_BPDU_PACKETS_TO_RX_QUEUE_7 (1 << 1) -#define PARTITION_DISABLE (0 << 2) -#define PARTITION_ENABLE (1 << 2) - -#define PORT_CONFIG_EXTEND_DEFAULT_VALUE \ - SPAN_BPDU_PACKETS_AS_NORMAL | \ - PARTITION_DISABLE - -/* These macros describe Ethernet Port Sdma configuration reg (SDCR) bits */ -#define RIFB (1 << 0) -#define RX_BURST_SIZE_1_64BIT (0 << 1) -#define RX_BURST_SIZE_2_64BIT (1 << 1) +#define PORT_CONFIG(p) (0x0400 + ((p) << 10)) +#define UNICAST_PROMISCUOUS_MODE 0x00000001 +#define PORT_CONFIG_EXT(p) (0x0404 + ((p) << 10)) +#define MAC_ADDR_LOW(p) (0x0414 + ((p) << 10)) +#define MAC_ADDR_HIGH(p) (0x0418 + ((p) << 10)) +#define SDMA_CONFIG(p) (0x041c + ((p) << 10)) +#define PORT_SERIAL_CONTROL(p) (0x043c + ((p) << 10)) +#define PORT_STATUS(p) (0x0444 + ((p) << 10)) +#define TX_FIFO_EMPTY 0x00000400 +#define TXQ_COMMAND(p) (0x0448 + ((p) << 10)) +#define TXQ_FIX_PRIO_CONF(p) (0x044c + ((p) << 10)) +#define TX_BW_RATE(p) (0x0450 + ((p) << 10)) +#define TX_BW_MTU(p) (0x0458 + ((p) << 10)) +#define TX_BW_BURST(p) (0x045c + ((p) << 10)) +#define INT_CAUSE(p) (0x0460 + ((p) << 10)) +#define INT_TX_END 0x07f80000 +#define INT_RX 0x0007fbfc +#define INT_EXT 0x00000002 +#define INT_CAUSE_EXT(p) (0x0464 + ((p) << 10)) +#define INT_EXT_LINK 0x00100000 +#define INT_EXT_PHY 0x00010000 +#define INT_EXT_TX_ERROR_0 0x00000100 +#define INT_EXT_TX_0 0x00000001 +#define INT_EXT_TX 0x0000ffff +#define INT_MASK(p) (0x0468 + ((p) << 10)) +#define INT_MASK_EXT(p) (0x046c + ((p) << 10)) +#define TX_FIFO_URGENT_THRESHOLD(p) (0x0474 + ((p) << 10)) +#define TXQ_FIX_PRIO_CONF_MOVED(p) (0x04dc + ((p) << 10)) +#define TX_BW_RATE_MOVED(p) (0x04e0 + ((p) << 10)) +#define TX_BW_MTU_MOVED(p) (0x04e8 + ((p) << 10)) +#define TX_BW_BURST_MOVED(p) (0x04ec + ((p) << 10)) +#define RXQ_CURRENT_DESC_PTR(p, q) (0x060c + ((p) << 10) + ((q) << 4)) +#define RXQ_COMMAND(p) (0x0680 + ((p) << 10)) +#define TXQ_CURRENT_DESC_PTR(p, q) (0x06c0 + ((p) << 10) + ((q) << 2)) +#define TXQ_BW_TOKENS(p, q) (0x0700 + ((p) << 10) + ((q) << 4)) +#define TXQ_BW_CONF(p, q) (0x0704 + ((p) << 10) + ((q) << 4)) +#define TXQ_BW_WRR_CONF(p, q) (0x0708 + ((p) << 10) + ((q) << 4)) +#define MIB_COUNTERS(p) (0x1000 + ((p) << 7)) +#define SPECIAL_MCAST_TABLE(p) (0x1400 + ((p) << 10)) +#define OTHER_MCAST_TABLE(p) (0x1500 + ((p) << 10)) +#define UNICAST_TABLE(p) (0x1600 + ((p) << 10)) + + +/* + * SDMA configuration register. + */ #define RX_BURST_SIZE_4_64BIT (2 << 1) -#define RX_BURST_SIZE_8_64BIT (3 << 1) -#define RX_BURST_SIZE_16_64BIT (4 << 1) #define BLM_RX_NO_SWAP (1 << 4) -#define BLM_RX_BYTE_SWAP (0 << 4) #define BLM_TX_NO_SWAP (1 << 5) -#define BLM_TX_BYTE_SWAP (0 << 5) -#define DESCRIPTORS_BYTE_SWAP (1 << 6) -#define DESCRIPTORS_NO_SWAP (0 << 6) -#define IPG_INT_RX(value) (((value) & 0x3fff) << 8) -#define TX_BURST_SIZE_1_64BIT (0 << 22) -#define TX_BURST_SIZE_2_64BIT (1 << 22) #define TX_BURST_SIZE_4_64BIT (2 << 22) -#define TX_BURST_SIZE_8_64BIT (3 << 22) -#define TX_BURST_SIZE_16_64BIT (4 << 22) #if defined(__BIG_ENDIAN) #define PORT_SDMA_CONFIG_DEFAULT_VALUE \ RX_BURST_SIZE_4_64BIT | \ - IPG_INT_RX(0) | \ TX_BURST_SIZE_4_64BIT #elif defined(__LITTLE_ENDIAN) #define PORT_SDMA_CONFIG_DEFAULT_VALUE \ RX_BURST_SIZE_4_64BIT | \ BLM_RX_NO_SWAP | \ BLM_TX_NO_SWAP | \ - IPG_INT_RX(0) | \ TX_BURST_SIZE_4_64BIT #else #error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined #endif -/* These macros describe Ethernet Port serial control reg (PSCR) bits */ -#define SERIAL_PORT_DISABLE (0 << 0) -#define SERIAL_PORT_ENABLE (1 << 0) -#define DO_NOT_FORCE_LINK_PASS (0 << 1) -#define FORCE_LINK_PASS (1 << 1) -#define ENABLE_AUTO_NEG_FOR_DUPLX (0 << 2) -#define DISABLE_AUTO_NEG_FOR_DUPLX (1 << 2) -#define ENABLE_AUTO_NEG_FOR_FLOW_CTRL (0 << 3) -#define DISABLE_AUTO_NEG_FOR_FLOW_CTRL (1 << 3) -#define ADV_NO_FLOW_CTRL (0 << 4) -#define ADV_SYMMETRIC_FLOW_CTRL (1 << 4) -#define FORCE_FC_MODE_NO_PAUSE_DIS_TX (0 << 5) -#define FORCE_FC_MODE_TX_PAUSE_DIS (1 << 5) -#define FORCE_BP_MODE_NO_JAM (0 << 7) -#define FORCE_BP_MODE_JAM_TX (1 << 7) -#define FORCE_BP_MODE_JAM_TX_ON_RX_ERR (2 << 7) -#define SERIAL_PORT_CONTROL_RESERVED (1 << 9) -#define FORCE_LINK_FAIL (0 << 10) -#define DO_NOT_FORCE_LINK_FAIL (1 << 10) -#define RETRANSMIT_16_ATTEMPTS (0 << 11) -#define RETRANSMIT_FOREVER (1 << 11) -#define ENABLE_AUTO_NEG_SPEED_GMII (0 << 13) -#define DISABLE_AUTO_NEG_SPEED_GMII (1 << 13) -#define DTE_ADV_0 (0 << 14) -#define DTE_ADV_1 (1 << 14) -#define DISABLE_AUTO_NEG_BYPASS (0 << 15) -#define ENABLE_AUTO_NEG_BYPASS (1 << 15) -#define AUTO_NEG_NO_CHANGE (0 << 16) -#define RESTART_AUTO_NEG (1 << 16) -#define MAX_RX_PACKET_1518BYTE (0 << 17) + +/* + * Port serial control register. + */ +#define SET_MII_SPEED_TO_100 (1 << 24) +#define SET_GMII_SPEED_TO_1000 (1 << 23) +#define SET_FULL_DUPLEX_MODE (1 << 21) #define MAX_RX_PACKET_1522BYTE (1 << 17) -#define MAX_RX_PACKET_1552BYTE (2 << 17) -#define MAX_RX_PACKET_9022BYTE (3 << 17) -#define MAX_RX_PACKET_9192BYTE (4 << 17) #define MAX_RX_PACKET_9700BYTE (5 << 17) #define MAX_RX_PACKET_MASK (7 << 17) -#define CLR_EXT_LOOPBACK (0 << 20) -#define SET_EXT_LOOPBACK (1 << 20) -#define SET_HALF_DUPLEX_MODE (0 << 21) -#define SET_FULL_DUPLEX_MODE (1 << 21) -#define DISABLE_FLOW_CTRL_TX_RX_IN_FULL_DUPLEX (0 << 22) -#define ENABLE_FLOW_CTRL_TX_RX_IN_FULL_DUPLEX (1 << 22) -#define SET_GMII_SPEED_TO_10_100 (0 << 23) -#define SET_GMII_SPEED_TO_1000 (1 << 23) -#define SET_MII_SPEED_TO_10 (0 << 24) -#define SET_MII_SPEED_TO_100 (1 << 24) +#define DISABLE_AUTO_NEG_SPEED_GMII (1 << 13) +#define DO_NOT_FORCE_LINK_FAIL (1 << 10) +#define SERIAL_PORT_CONTROL_RESERVED (1 << 9) +#define DISABLE_AUTO_NEG_FOR_FLOW_CTRL (1 << 3) +#define DISABLE_AUTO_NEG_FOR_DUPLEX (1 << 2) +#define FORCE_LINK_PASS (1 << 1) +#define SERIAL_PORT_ENABLE (1 << 0) -#define PORT_SERIAL_CONTROL_DEFAULT_VALUE \ - DO_NOT_FORCE_LINK_PASS | \ - ENABLE_AUTO_NEG_FOR_DUPLX | \ - DISABLE_AUTO_NEG_FOR_FLOW_CTRL | \ - ADV_SYMMETRIC_FLOW_CTRL | \ - FORCE_FC_MODE_NO_PAUSE_DIS_TX | \ - FORCE_BP_MODE_NO_JAM | \ - (1 << 9) /* reserved */ | \ - DO_NOT_FORCE_LINK_FAIL | \ - RETRANSMIT_16_ATTEMPTS | \ - ENABLE_AUTO_NEG_SPEED_GMII | \ - DTE_ADV_0 | \ - DISABLE_AUTO_NEG_BYPASS | \ - AUTO_NEG_NO_CHANGE | \ - MAX_RX_PACKET_9700BYTE | \ - CLR_EXT_LOOPBACK | \ - SET_FULL_DUPLEX_MODE | \ - ENABLE_FLOW_CTRL_TX_RX_IN_FULL_DUPLEX - -/* These macros describe Ethernet Serial Status reg (PSR) bits */ -#define PORT_STATUS_MODE_10_BIT (1 << 0) -#define PORT_STATUS_LINK_UP (1 << 1) -#define PORT_STATUS_FULL_DUPLEX (1 << 2) -#define PORT_STATUS_FLOW_CONTROL (1 << 3) -#define PORT_STATUS_GMII_1000 (1 << 4) -#define PORT_STATUS_MII_100 (1 << 5) -/* PSR bit 6 is undocumented */ -#define PORT_STATUS_TX_IN_PROGRESS (1 << 7) -#define PORT_STATUS_AUTONEG_BYPASSED (1 << 8) -#define PORT_STATUS_PARTITION (1 << 9) -#define PORT_STATUS_TX_FIFO_EMPTY (1 << 10) -/* PSR bits 11-31 are reserved */ - -#define PORT_DEFAULT_TRANSMIT_QUEUE_SIZE 800 -#define PORT_DEFAULT_RECEIVE_QUEUE_SIZE 400 - -#define DESC_SIZE 64 - -#define ETH_RX_QUEUES_ENABLED (1 << 0) /* use only Q0 for receive */ -#define ETH_TX_QUEUES_ENABLED (1 << 0) /* use only Q0 for transmit */ - -#define ETH_INT_CAUSE_RX_DONE (ETH_RX_QUEUES_ENABLED << 2) -#define ETH_INT_CAUSE_RX_ERROR (ETH_RX_QUEUES_ENABLED << 9) -#define ETH_INT_CAUSE_RX (ETH_INT_CAUSE_RX_DONE | ETH_INT_CAUSE_RX_ERROR) -#define ETH_INT_CAUSE_EXT 0x00000002 -#define ETH_INT_UNMASK_ALL (ETH_INT_CAUSE_RX | ETH_INT_CAUSE_EXT) - -#define ETH_INT_CAUSE_TX_DONE (ETH_TX_QUEUES_ENABLED << 0) -#define ETH_INT_CAUSE_TX_ERROR (ETH_TX_QUEUES_ENABLED << 8) -#define ETH_INT_CAUSE_TX (ETH_INT_CAUSE_TX_DONE | ETH_INT_CAUSE_TX_ERROR) -#define ETH_INT_CAUSE_PHY 0x00010000 -#define ETH_INT_CAUSE_STATE 0x00100000 -#define ETH_INT_UNMASK_ALL_EXT (ETH_INT_CAUSE_TX | ETH_INT_CAUSE_PHY | \ - ETH_INT_CAUSE_STATE) - -#define ETH_INT_MASK_ALL 0x00000000 -#define ETH_INT_MASK_ALL_EXT 0x00000000 - -#define PHY_WAIT_ITERATIONS 1000 /* 1000 iterations * 10uS = 10mS max */ -#define PHY_WAIT_MICRO_SECONDS 10 - -/* Buffer offset from buffer pointer */ -#define RX_BUF_OFFSET 0x2 - -/* Gigabit Ethernet Unit Global Registers */ - -/* MIB Counters register definitions */ -#define ETH_MIB_GOOD_OCTETS_RECEIVED_LOW 0x0 -#define ETH_MIB_GOOD_OCTETS_RECEIVED_HIGH 0x4 -#define ETH_MIB_BAD_OCTETS_RECEIVED 0x8 -#define ETH_MIB_INTERNAL_MAC_TRANSMIT_ERR 0xc -#define ETH_MIB_GOOD_FRAMES_RECEIVED 0x10 -#define ETH_MIB_BAD_FRAMES_RECEIVED 0x14 -#define ETH_MIB_BROADCAST_FRAMES_RECEIVED 0x18 -#define ETH_MIB_MULTICAST_FRAMES_RECEIVED 0x1c -#define ETH_MIB_FRAMES_64_OCTETS 0x20 -#define ETH_MIB_FRAMES_65_TO_127_OCTETS 0x24 -#define ETH_MIB_FRAMES_128_TO_255_OCTETS 0x28 -#define ETH_MIB_FRAMES_256_TO_511_OCTETS 0x2c -#define ETH_MIB_FRAMES_512_TO_1023_OCTETS 0x30 -#define ETH_MIB_FRAMES_1024_TO_MAX_OCTETS 0x34 -#define ETH_MIB_GOOD_OCTETS_SENT_LOW 0x38 -#define ETH_MIB_GOOD_OCTETS_SENT_HIGH 0x3c -#define ETH_MIB_GOOD_FRAMES_SENT 0x40 -#define ETH_MIB_EXCESSIVE_COLLISION 0x44 -#define ETH_MIB_MULTICAST_FRAMES_SENT 0x48 -#define ETH_MIB_BROADCAST_FRAMES_SENT 0x4c -#define ETH_MIB_UNREC_MAC_CONTROL_RECEIVED 0x50 -#define ETH_MIB_FC_SENT 0x54 -#define ETH_MIB_GOOD_FC_RECEIVED 0x58 -#define ETH_MIB_BAD_FC_RECEIVED 0x5c -#define ETH_MIB_UNDERSIZE_RECEIVED 0x60 -#define ETH_MIB_FRAGMENTS_RECEIVED 0x64 -#define ETH_MIB_OVERSIZE_RECEIVED 0x68 -#define ETH_MIB_JABBER_RECEIVED 0x6c -#define ETH_MIB_MAC_RECEIVE_ERROR 0x70 -#define ETH_MIB_BAD_CRC_EVENT 0x74 -#define ETH_MIB_COLLISION 0x78 -#define ETH_MIB_LATE_COLLISION 0x7c - -/* Port serial status reg (PSR) */ -#define ETH_INTERFACE_PCM 0x00000001 -#define ETH_LINK_IS_UP 0x00000002 -#define ETH_PORT_AT_FULL_DUPLEX 0x00000004 -#define ETH_RX_FLOW_CTRL_ENABLED 0x00000008 -#define ETH_GMII_SPEED_1000 0x00000010 -#define ETH_MII_SPEED_100 0x00000020 -#define ETH_TX_IN_PROGRESS 0x00000080 -#define ETH_BYPASS_ACTIVE 0x00000100 -#define ETH_PORT_AT_PARTITION_STATE 0x00000200 -#define ETH_PORT_TX_FIFO_EMPTY 0x00000400 - -/* SMI reg */ -#define ETH_SMI_BUSY 0x10000000 /* 0 - Write, 1 - Read */ -#define ETH_SMI_READ_VALID 0x08000000 /* 0 - Write, 1 - Read */ -#define ETH_SMI_OPCODE_WRITE 0 /* Completion of Read */ -#define ETH_SMI_OPCODE_READ 0x04000000 /* Operation is in progress */ - -/* Interrupt Cause Register Bit Definitions */ - -/* SDMA command status fields macros */ - -/* Tx & Rx descriptors status */ -#define ETH_ERROR_SUMMARY 0x00000001 - -/* Tx & Rx descriptors command */ -#define ETH_BUFFER_OWNED_BY_DMA 0x80000000 - -/* Tx descriptors status */ -#define ETH_LC_ERROR 0 -#define ETH_UR_ERROR 0x00000002 -#define ETH_RL_ERROR 0x00000004 -#define ETH_LLC_SNAP_FORMAT 0x00000200 - -/* Rx descriptors status */ -#define ETH_OVERRUN_ERROR 0x00000002 -#define ETH_MAX_FRAME_LENGTH_ERROR 0x00000004 -#define ETH_RESOURCE_ERROR 0x00000006 -#define ETH_VLAN_TAGGED 0x00080000 -#define ETH_BPDU_FRAME 0x00100000 -#define ETH_UDP_FRAME_OVER_IP_V_4 0x00200000 -#define ETH_OTHER_FRAME_TYPE 0x00400000 -#define ETH_LAYER_2_IS_ETH_V_2 0x00800000 -#define ETH_FRAME_TYPE_IP_V_4 0x01000000 -#define ETH_FRAME_HEADER_OK 0x02000000 -#define ETH_RX_LAST_DESC 0x04000000 -#define ETH_RX_FIRST_DESC 0x08000000 -#define ETH_UNKNOWN_DESTINATION_ADDR 0x10000000 -#define ETH_RX_ENABLE_INTERRUPT 0x20000000 -#define ETH_LAYER_4_CHECKSUM_OK 0x40000000 - -/* Rx descriptors byte count */ -#define ETH_FRAME_FRAGMENTED 0x00000004 - -/* Tx descriptors command */ -#define ETH_LAYER_4_CHECKSUM_FIRST_DESC 0x00000400 -#define ETH_FRAME_SET_TO_VLAN 0x00008000 -#define ETH_UDP_FRAME 0x00010000 -#define ETH_GEN_TCP_UDP_CHECKSUM 0x00020000 -#define ETH_GEN_IP_V_4_CHECKSUM 0x00040000 -#define ETH_ZERO_PADDING 0x00080000 -#define ETH_TX_LAST_DESC 0x00100000 -#define ETH_TX_FIRST_DESC 0x00200000 -#define ETH_GEN_CRC 0x00400000 -#define ETH_TX_ENABLE_INTERRUPT 0x00800000 -#define ETH_AUTO_MODE 0x40000000 - -#define ETH_TX_IHL_SHIFT 11 - -/* typedefs */ - -typedef enum _eth_func_ret_status { - ETH_OK, /* Returned as expected. */ - ETH_ERROR, /* Fundamental error. */ - ETH_RETRY, /* Could not process request. Try later.*/ - ETH_END_OF_JOB, /* Ring has nothing to process. */ - ETH_QUEUE_FULL, /* Ring resource error. */ - ETH_QUEUE_LAST_RESOURCE /* Ring resources about to exhaust. */ -} ETH_FUNC_RET_STATUS; - -/* These are for big-endian machines. Little endian needs different - * definitions. +#define DEFAULT_RX_QUEUE_SIZE 400 +#define DEFAULT_TX_QUEUE_SIZE 800 + + +/* + * RX/TX descriptors. */ #if defined(__BIG_ENDIAN) -struct eth_rx_desc { +struct rx_desc { u16 byte_cnt; /* Descriptor buffer byte count */ u16 buf_size; /* Buffer size */ u32 cmd_sts; /* Descriptor command status */ @@ -441,7 +180,7 @@ struct eth_rx_desc { u32 buf_ptr; /* Descriptor buffer pointer */ }; -struct eth_tx_desc { +struct tx_desc { u16 byte_cnt; /* buffer byte count */ u16 l4i_chk; /* CPU provided TCP checksum */ u32 cmd_sts; /* Command/status field */ @@ -449,7 +188,7 @@ struct eth_tx_desc { u32 buf_ptr; /* pointer to buffer for this descriptor*/ }; #elif defined(__LITTLE_ENDIAN) -struct eth_rx_desc { +struct rx_desc { u32 cmd_sts; /* Descriptor command status */ u16 buf_size; /* Buffer size */ u16 byte_cnt; /* Descriptor buffer byte count */ @@ -457,7 +196,7 @@ struct eth_rx_desc { u32 next_desc_ptr; /* Next descriptor pointer */ }; -struct eth_tx_desc { +struct tx_desc { u32 cmd_sts; /* Command/status field */ u16 l4i_chk; /* CPU provided TCP checksum */ u16 byte_cnt; /* buffer byte count */ @@ -468,18 +207,59 @@ struct eth_tx_desc { #error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined #endif -/* Unified struct for Rx and Tx operations. The user is not required to */ -/* be familier with neither Tx nor Rx descriptors. */ -struct pkt_info { - unsigned short byte_cnt; /* Descriptor buffer byte count */ - unsigned short l4i_chk; /* Tx CPU provided TCP Checksum */ - unsigned int cmd_sts; /* Descriptor command status */ - dma_addr_t buf_ptr; /* Descriptor buffer pointer */ - struct sk_buff *return_info; /* User resource return information */ +/* RX & TX descriptor command */ +#define BUFFER_OWNED_BY_DMA 0x80000000 + +/* RX & TX descriptor status */ +#define ERROR_SUMMARY 0x00000001 + +/* RX descriptor status */ +#define LAYER_4_CHECKSUM_OK 0x40000000 +#define RX_ENABLE_INTERRUPT 0x20000000 +#define RX_FIRST_DESC 0x08000000 +#define RX_LAST_DESC 0x04000000 + +/* TX descriptor command */ +#define TX_ENABLE_INTERRUPT 0x00800000 +#define GEN_CRC 0x00400000 +#define TX_FIRST_DESC 0x00200000 +#define TX_LAST_DESC 0x00100000 +#define ZERO_PADDING 0x00080000 +#define GEN_IP_V4_CHECKSUM 0x00040000 +#define GEN_TCP_UDP_CHECKSUM 0x00020000 +#define UDP_FRAME 0x00010000 + +#define TX_IHL_SHIFT 11 + + +/* global *******************************************************************/ +struct mv643xx_eth_shared_private { + /* + * Ethernet controller base address. + */ + void __iomem *base; + + /* + * Protects access to SMI_REG, which is shared between ports. + */ + spinlock_t phy_lock; + + /* + * Per-port MBUS window access register value. + */ + u32 win_protect; + + /* + * Hardware-specific parameters. + */ + unsigned int t_clk; + int extended_rx_coal_limit; + int tx_bw_control_moved; }; -/* Ethernet port specific information */ -struct mv643xx_mib_counters { + +/* per-port *****************************************************************/ +struct mib_counters { u64 good_octets_received; u32 bad_octets_received; u32 internal_mac_transmit_err; @@ -512,461 +292,282 @@ struct mv643xx_mib_counters { u32 late_collision; }; -struct mv643xx_shared_private { - void __iomem *eth_base; - - /* used to protect SMI_REG, which is shared across ports */ - spinlock_t phy_lock; +struct rx_queue { + int index; - u32 win_protect; - - unsigned int t_clk; -}; - -struct mv643xx_private { - struct mv643xx_shared_private *shared; - int port_num; /* User Ethernet port number */ - - struct mv643xx_shared_private *shared_smi; - - u32 rx_sram_addr; /* Base address of rx sram area */ - u32 rx_sram_size; /* Size of rx sram area */ - u32 tx_sram_addr; /* Base address of tx sram area */ - u32 tx_sram_size; /* Size of tx sram area */ + int rx_ring_size; - int rx_resource_err; /* Rx ring resource error flag */ + int rx_desc_count; + int rx_curr_desc; + int rx_used_desc; - /* Tx/Rx rings managment indexes fields. For driver use */ + struct rx_desc *rx_desc_area; + dma_addr_t rx_desc_dma; + int rx_desc_area_size; + struct sk_buff **rx_skb; - /* Next available and first returning Rx resource */ - int rx_curr_desc_q, rx_used_desc_q; + struct timer_list rx_oom; +}; - /* Next available and first returning Tx resource */ - int tx_curr_desc_q, tx_used_desc_q; +struct tx_queue { + int index; -#ifdef MV643XX_TX_FAST_REFILL - u32 tx_clean_threshold; -#endif + int tx_ring_size; - struct eth_rx_desc *p_rx_desc_area; - dma_addr_t rx_desc_dma; - int rx_desc_area_size; - struct sk_buff **rx_skb; + int tx_desc_count; + int tx_curr_desc; + int tx_used_desc; - struct eth_tx_desc *p_tx_desc_area; + struct tx_desc *tx_desc_area; dma_addr_t tx_desc_dma; int tx_desc_area_size; struct sk_buff **tx_skb; +}; - struct work_struct tx_timeout_task; +struct mv643xx_eth_private { + struct mv643xx_eth_shared_private *shared; + int port_num; struct net_device *dev; - struct napi_struct napi; - struct net_device_stats stats; - struct mv643xx_mib_counters mib_counters; + + struct mv643xx_eth_shared_private *shared_smi; + int phy_addr; + spinlock_t lock; - /* Size of Tx Ring per queue */ - int tx_ring_size; - /* Number of tx descriptors in use */ - int tx_desc_count; - /* Size of Rx Ring per queue */ - int rx_ring_size; - /* Number of rx descriptors in use */ - int rx_desc_count; + + struct mib_counters mib_counters; + struct work_struct tx_timeout_task; + struct mii_if_info mii; /* - * Used in case RX Ring is empty, which can be caused when - * system does not have resources (skb's) + * RX state. */ - struct timer_list timeout; - - u32 rx_int_coal; - u32 tx_int_coal; - struct mii_if_info mii; -}; + int default_rx_ring_size; + unsigned long rx_desc_sram_addr; + int rx_desc_sram_size; + u8 rxq_mask; + int rxq_primary; + struct napi_struct napi; + struct rx_queue rxq[8]; -/* Static function declarations */ -static void eth_port_init(struct mv643xx_private *mp); -static void eth_port_reset(struct mv643xx_private *mp); -static void eth_port_start(struct net_device *dev); - -static void ethernet_phy_reset(struct mv643xx_private *mp); - -static void eth_port_write_smi_reg(struct mv643xx_private *mp, - unsigned int phy_reg, unsigned int value); - -static void eth_port_read_smi_reg(struct mv643xx_private *mp, - unsigned int phy_reg, unsigned int *value); - -static void eth_clear_mib_counters(struct mv643xx_private *mp); - -static ETH_FUNC_RET_STATUS eth_port_receive(struct mv643xx_private *mp, - struct pkt_info *p_pkt_info); -static ETH_FUNC_RET_STATUS eth_rx_return_buff(struct mv643xx_private *mp, - struct pkt_info *p_pkt_info); - -static void eth_port_uc_addr_get(struct mv643xx_private *mp, - unsigned char *p_addr); -static void eth_port_uc_addr_set(struct mv643xx_private *mp, - unsigned char *p_addr); -static void eth_port_set_multicast_list(struct net_device *); -static void mv643xx_eth_port_enable_tx(struct mv643xx_private *mp, - unsigned int queues); -static void mv643xx_eth_port_enable_rx(struct mv643xx_private *mp, - unsigned int queues); -static unsigned int mv643xx_eth_port_disable_tx(struct mv643xx_private *mp); -static unsigned int mv643xx_eth_port_disable_rx(struct mv643xx_private *mp); -static int mv643xx_eth_open(struct net_device *); -static int mv643xx_eth_stop(struct net_device *); -static void eth_port_init_mac_tables(struct mv643xx_private *mp); -#ifdef MV643XX_NAPI -static int mv643xx_poll(struct napi_struct *napi, int budget); + /* + * TX state. + */ + int default_tx_ring_size; + unsigned long tx_desc_sram_addr; + int tx_desc_sram_size; + u8 txq_mask; + int txq_primary; + struct tx_queue txq[8]; +#ifdef MV643XX_ETH_TX_FAST_REFILL + int tx_clean_threshold; #endif -static int ethernet_phy_get(struct mv643xx_private *mp); -static void ethernet_phy_set(struct mv643xx_private *mp, int phy_addr); -static int ethernet_phy_detect(struct mv643xx_private *mp); -static int mv643xx_mdio_read(struct net_device *dev, int phy_id, int location); -static void mv643xx_mdio_write(struct net_device *dev, int phy_id, int location, int val); -static int mv643xx_eth_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd); -static const struct ethtool_ops mv643xx_ethtool_ops; +}; -static char mv643xx_driver_name[] = "mv643xx_eth"; -static char mv643xx_driver_version[] = "1.0"; -static inline u32 rdl(struct mv643xx_private *mp, int offset) +/* port register accessors **************************************************/ +static inline u32 rdl(struct mv643xx_eth_private *mp, int offset) { - return readl(mp->shared->eth_base + offset); + return readl(mp->shared->base + offset); } -static inline void wrl(struct mv643xx_private *mp, int offset, u32 data) +static inline void wrl(struct mv643xx_eth_private *mp, int offset, u32 data) { - writel(data, mp->shared->eth_base + offset); + writel(data, mp->shared->base + offset); } -/* - * Changes MTU (maximum transfer unit) of the gigabit ethenret port - * - * Input : pointer to ethernet interface network device structure - * new mtu size - * Output : 0 upon success, -EINVAL upon failure - */ -static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu) -{ - if ((new_mtu > 9500) || (new_mtu < 64)) - return -EINVAL; - dev->mtu = new_mtu; - if (!netif_running(dev)) - return 0; - - /* - * Stop and then re-open the interface. This will allocate RX - * skbs of the new MTU. - * There is a possible danger that the open will not succeed, - * due to memory being full, which might fail the open function. - */ - mv643xx_eth_stop(dev); - if (mv643xx_eth_open(dev)) { - printk(KERN_ERR "%s: Fatal error on opening device\n", - dev->name); - } - - return 0; -} - -/* - * mv643xx_eth_rx_refill_descs - * - * Fills / refills RX queue on a certain gigabit ethernet port - * - * Input : pointer to ethernet interface network device structure - * Output : N/A - */ -static void mv643xx_eth_rx_refill_descs(struct net_device *dev) +/* rxq/txq helper functions *************************************************/ +static struct mv643xx_eth_private *rxq_to_mp(struct rx_queue *rxq) { - struct mv643xx_private *mp = netdev_priv(dev); - struct pkt_info pkt_info; - struct sk_buff *skb; - int unaligned; - - while (mp->rx_desc_count < mp->rx_ring_size) { - skb = dev_alloc_skb(ETH_RX_SKB_SIZE + dma_get_cache_alignment()); - if (!skb) - break; - mp->rx_desc_count++; - unaligned = (u32)skb->data & (dma_get_cache_alignment() - 1); - if (unaligned) - skb_reserve(skb, dma_get_cache_alignment() - unaligned); - pkt_info.cmd_sts = ETH_RX_ENABLE_INTERRUPT; - pkt_info.byte_cnt = ETH_RX_SKB_SIZE; - pkt_info.buf_ptr = dma_map_single(NULL, skb->data, - ETH_RX_SKB_SIZE, DMA_FROM_DEVICE); - pkt_info.return_info = skb; - if (eth_rx_return_buff(mp, &pkt_info) != ETH_OK) { - printk(KERN_ERR - "%s: Error allocating RX Ring\n", dev->name); - break; - } - skb_reserve(skb, ETH_HW_IP_ALIGN); - } - /* - * If RX ring is empty of SKB, set a timer to try allocating - * again at a later time. - */ - if (mp->rx_desc_count == 0) { - printk(KERN_INFO "%s: Rx ring is empty\n", dev->name); - mp->timeout.expires = jiffies + (HZ / 10); /* 100 mSec */ - add_timer(&mp->timeout); - } + return container_of(rxq, struct mv643xx_eth_private, rxq[rxq->index]); } -/* - * mv643xx_eth_rx_refill_descs_timer_wrapper - * - * Timer routine to wake up RX queue filling task. This function is - * used only in case the RX queue is empty, and all alloc_skb has - * failed (due to out of memory event). - * - * Input : pointer to ethernet interface network device structure - * Output : N/A - */ -static inline void mv643xx_eth_rx_refill_descs_timer_wrapper(unsigned long data) +static struct mv643xx_eth_private *txq_to_mp(struct tx_queue *txq) { - mv643xx_eth_rx_refill_descs((struct net_device *)data); + return container_of(txq, struct mv643xx_eth_private, txq[txq->index]); } -/* - * mv643xx_eth_update_mac_address - * - * Update the MAC address of the port in the address table - * - * Input : pointer to ethernet interface network device structure - * Output : N/A - */ -static void mv643xx_eth_update_mac_address(struct net_device *dev) +static void rxq_enable(struct rx_queue *rxq) { - struct mv643xx_private *mp = netdev_priv(dev); - - eth_port_init_mac_tables(mp); - eth_port_uc_addr_set(mp, dev->dev_addr); + struct mv643xx_eth_private *mp = rxq_to_mp(rxq); + wrl(mp, RXQ_COMMAND(mp->port_num), 1 << rxq->index); } -/* - * mv643xx_eth_set_rx_mode - * - * Change from promiscuos to regular rx mode - * - * Input : pointer to ethernet interface network device structure - * Output : N/A - */ -static void mv643xx_eth_set_rx_mode(struct net_device *dev) +static void rxq_disable(struct rx_queue *rxq) { - struct mv643xx_private *mp = netdev_priv(dev); - u32 config_reg; + struct mv643xx_eth_private *mp = rxq_to_mp(rxq); + u8 mask = 1 << rxq->index; - config_reg = rdl(mp, PORT_CONFIG_REG(mp->port_num)); - if (dev->flags & IFF_PROMISC) - config_reg |= (u32) UNICAST_PROMISCUOUS_MODE; - else - config_reg &= ~(u32) UNICAST_PROMISCUOUS_MODE; - wrl(mp, PORT_CONFIG_REG(mp->port_num), config_reg); - - eth_port_set_multicast_list(dev); + wrl(mp, RXQ_COMMAND(mp->port_num), mask << 8); + while (rdl(mp, RXQ_COMMAND(mp->port_num)) & mask) + udelay(10); } -/* - * mv643xx_eth_set_mac_address - * - * Change the interface's mac address. - * No special hardware thing should be done because interface is always - * put in promiscuous mode. - * - * Input : pointer to ethernet interface network device structure and - * a pointer to the designated entry to be added to the cache. - * Output : zero upon success, negative upon failure - */ -static int mv643xx_eth_set_mac_address(struct net_device *dev, void *addr) +static void txq_enable(struct tx_queue *txq) { - int i; - - for (i = 0; i < 6; i++) - /* +2 is for the offset of the HW addr type */ - dev->dev_addr[i] = ((unsigned char *)addr)[i + 2]; - mv643xx_eth_update_mac_address(dev); - return 0; + struct mv643xx_eth_private *mp = txq_to_mp(txq); + wrl(mp, TXQ_COMMAND(mp->port_num), 1 << txq->index); } -/* - * mv643xx_eth_tx_timeout - * - * Called upon a timeout on transmitting a packet - * - * Input : pointer to ethernet interface network device structure. - * Output : N/A - */ -static void mv643xx_eth_tx_timeout(struct net_device *dev) +static void txq_disable(struct tx_queue *txq) { - struct mv643xx_private *mp = netdev_priv(dev); - - printk(KERN_INFO "%s: TX timeout ", dev->name); + struct mv643xx_eth_private *mp = txq_to_mp(txq); + u8 mask = 1 << txq->index; - /* Do the reset outside of interrupt context */ - schedule_work(&mp->tx_timeout_task); + wrl(mp, TXQ_COMMAND(mp->port_num), mask << 8); + while (rdl(mp, TXQ_COMMAND(mp->port_num)) & mask) + udelay(10); } -/* - * mv643xx_eth_tx_timeout_task - * - * Actual routine to reset the adapter when a timeout on Tx has occurred - */ -static void mv643xx_eth_tx_timeout_task(struct work_struct *ugly) +static void __txq_maybe_wake(struct tx_queue *txq) { - struct mv643xx_private *mp = container_of(ugly, struct mv643xx_private, - tx_timeout_task); - struct net_device *dev = mp->dev; + struct mv643xx_eth_private *mp = txq_to_mp(txq); - if (!netif_running(dev)) - return; + /* + * netif_{stop,wake}_queue() flow control only applies to + * the primary queue. + */ + BUG_ON(txq->index != mp->txq_primary); - netif_stop_queue(dev); + if (txq->tx_ring_size - txq->tx_desc_count >= MAX_DESCS_PER_SKB) + netif_wake_queue(mp->dev); +} - eth_port_reset(mp); - eth_port_start(dev); - if (mp->tx_ring_size - mp->tx_desc_count >= MAX_DESCS_PER_SKB) - netif_wake_queue(dev); -} +/* rx ***********************************************************************/ +static void txq_reclaim(struct tx_queue *txq, int force); -/** - * mv643xx_eth_free_tx_descs - Free the tx desc data for completed descriptors - * - * If force is non-zero, frees uncompleted descriptors as well - */ -static int mv643xx_eth_free_tx_descs(struct net_device *dev, int force) +static void rxq_refill(struct rx_queue *rxq) { - struct mv643xx_private *mp = netdev_priv(dev); - struct eth_tx_desc *desc; - u32 cmd_sts; - struct sk_buff *skb; + struct mv643xx_eth_private *mp = rxq_to_mp(rxq); unsigned long flags; - int tx_index; - dma_addr_t addr; - int count; - int released = 0; - while (mp->tx_desc_count > 0) { - spin_lock_irqsave(&mp->lock, flags); - - /* tx_desc_count might have changed before acquiring the lock */ - if (mp->tx_desc_count <= 0) { - spin_unlock_irqrestore(&mp->lock, flags); - return released; - } - - tx_index = mp->tx_used_desc_q; - desc = &mp->p_tx_desc_area[tx_index]; - cmd_sts = desc->cmd_sts; + spin_lock_irqsave(&mp->lock, flags); - if (!force && (cmd_sts & ETH_BUFFER_OWNED_BY_DMA)) { - spin_unlock_irqrestore(&mp->lock, flags); - return released; - } + while (rxq->rx_desc_count < rxq->rx_ring_size) { + int skb_size; + struct sk_buff *skb; + int unaligned; + int rx; - mp->tx_used_desc_q = (tx_index + 1) % mp->tx_ring_size; - mp->tx_desc_count--; + /* + * Reserve 2+14 bytes for an ethernet header (the + * hardware automatically prepends 2 bytes of dummy + * data to each received packet), 4 bytes for a VLAN + * header, and 4 bytes for the trailing FCS -- 24 + * bytes total. + */ + skb_size = mp->dev->mtu + 24; - addr = desc->buf_ptr; - count = desc->byte_cnt; - skb = mp->tx_skb[tx_index]; - if (skb) - mp->tx_skb[tx_index] = NULL; + skb = dev_alloc_skb(skb_size + dma_get_cache_alignment() - 1); + if (skb == NULL) + break; - if (cmd_sts & ETH_ERROR_SUMMARY) { - printk("%s: Error in TX\n", dev->name); - dev->stats.tx_errors++; - } + unaligned = (u32)skb->data & (dma_get_cache_alignment() - 1); + if (unaligned) + skb_reserve(skb, dma_get_cache_alignment() - unaligned); - spin_unlock_irqrestore(&mp->lock, flags); + rxq->rx_desc_count++; + rx = rxq->rx_used_desc; + rxq->rx_used_desc = (rx + 1) % rxq->rx_ring_size; - if (cmd_sts & ETH_TX_FIRST_DESC) - dma_unmap_single(NULL, addr, count, DMA_TO_DEVICE); - else - dma_unmap_page(NULL, addr, count, DMA_TO_DEVICE); + rxq->rx_desc_area[rx].buf_ptr = dma_map_single(NULL, skb->data, + skb_size, DMA_FROM_DEVICE); + rxq->rx_desc_area[rx].buf_size = skb_size; + rxq->rx_skb[rx] = skb; + wmb(); + rxq->rx_desc_area[rx].cmd_sts = BUFFER_OWNED_BY_DMA | + RX_ENABLE_INTERRUPT; + wmb(); - if (skb) - dev_kfree_skb_irq(skb); + /* + * The hardware automatically prepends 2 bytes of + * dummy data to each received packet, so that the + * IP header ends up 16-byte aligned. + */ + skb_reserve(skb, 2); + } - released = 1; + if (rxq->rx_desc_count != rxq->rx_ring_size) { + rxq->rx_oom.expires = jiffies + (HZ / 10); + add_timer(&rxq->rx_oom); } - return released; + spin_unlock_irqrestore(&mp->lock, flags); } -static void mv643xx_eth_free_completed_tx_descs(struct net_device *dev) +static inline void rxq_refill_timer_wrapper(unsigned long data) { - struct mv643xx_private *mp = netdev_priv(dev); - - if (mv643xx_eth_free_tx_descs(dev, 0) && - mp->tx_ring_size - mp->tx_desc_count >= MAX_DESCS_PER_SKB) - netif_wake_queue(dev); + rxq_refill((struct rx_queue *)data); } -static void mv643xx_eth_free_all_tx_descs(struct net_device *dev) +static int rxq_process(struct rx_queue *rxq, int budget) { - mv643xx_eth_free_tx_descs(dev, 1); -} + struct mv643xx_eth_private *mp = rxq_to_mp(rxq); + struct net_device_stats *stats = &mp->dev->stats; + int rx; -/* - * mv643xx_eth_receive - * - * This function is forward packets that are received from the port's - * queues toward kernel core or FastRoute them to another interface. - * - * Input : dev - a pointer to the required interface - * max - maximum number to receive (0 means unlimted) - * - * Output : number of served packets - */ -static int mv643xx_eth_receive_queue(struct net_device *dev, int budget) -{ - struct mv643xx_private *mp = netdev_priv(dev); - struct net_device_stats *stats = &dev->stats; - unsigned int received_packets = 0; - struct sk_buff *skb; - struct pkt_info pkt_info; + rx = 0; + while (rx < budget) { + struct rx_desc *rx_desc; + unsigned int cmd_sts; + struct sk_buff *skb; + unsigned long flags; + + spin_lock_irqsave(&mp->lock, flags); + + rx_desc = &rxq->rx_desc_area[rxq->rx_curr_desc]; + + cmd_sts = rx_desc->cmd_sts; + if (cmd_sts & BUFFER_OWNED_BY_DMA) { + spin_unlock_irqrestore(&mp->lock, flags); + break; + } + rmb(); + + skb = rxq->rx_skb[rxq->rx_curr_desc]; + rxq->rx_skb[rxq->rx_curr_desc] = NULL; - while (budget-- > 0 && eth_port_receive(mp, &pkt_info) == ETH_OK) { - dma_unmap_single(NULL, pkt_info.buf_ptr, ETH_RX_SKB_SIZE, - DMA_FROM_DEVICE); - mp->rx_desc_count--; - received_packets++; + rxq->rx_curr_desc = (rxq->rx_curr_desc + 1) % rxq->rx_ring_size; + + spin_unlock_irqrestore(&mp->lock, flags); + + dma_unmap_single(NULL, rx_desc->buf_ptr + 2, + mp->dev->mtu + 24, DMA_FROM_DEVICE); + rxq->rx_desc_count--; + rx++; /* * Update statistics. - * Note byte count includes 4 byte CRC count + * + * Note that the descriptor byte count includes 2 dummy + * bytes automatically inserted by the hardware at the + * start of the packet (which we don't count), and a 4 + * byte CRC at the end of the packet (which we do count). */ stats->rx_packets++; - stats->rx_bytes += pkt_info.byte_cnt; - skb = pkt_info.return_info; + stats->rx_bytes += rx_desc->byte_cnt - 2; + /* - * In case received a packet without first / last bits on OR - * the error summary bit is on, the packets needs to be dropeed. + * In case we received a packet without first / last bits + * on, or the error summary bit is set, the packet needs + * to be dropped. */ - if (((pkt_info.cmd_sts - & (ETH_RX_FIRST_DESC | ETH_RX_LAST_DESC)) != - (ETH_RX_FIRST_DESC | ETH_RX_LAST_DESC)) - || (pkt_info.cmd_sts & ETH_ERROR_SUMMARY)) { + if (((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC)) != + (RX_FIRST_DESC | RX_LAST_DESC)) + || (cmd_sts & ERROR_SUMMARY)) { stats->rx_dropped++; - if ((pkt_info.cmd_sts & (ETH_RX_FIRST_DESC | - ETH_RX_LAST_DESC)) != - (ETH_RX_FIRST_DESC | ETH_RX_LAST_DESC)) { + + if ((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC)) != + (RX_FIRST_DESC | RX_LAST_DESC)) { if (net_ratelimit()) - printk(KERN_ERR - "%s: Received packet spread " - "on multiple descriptors\n", - dev->name); + dev_printk(KERN_ERR, &mp->dev->dev, + "received packet spanning " + "multiple descriptors\n"); } - if (pkt_info.cmd_sts & ETH_ERROR_SUMMARY) + + if (cmd_sts & ERROR_SUMMARY) stats->rx_errors++; dev_kfree_skb_irq(skb); @@ -975,2391 +576,2003 @@ static int mv643xx_eth_receive_queue(struct net_device *dev, int budget) * The -4 is for the CRC in the trailer of the * received packet */ - skb_put(skb, pkt_info.byte_cnt - 4); + skb_put(skb, rx_desc->byte_cnt - 2 - 4); - if (pkt_info.cmd_sts & ETH_LAYER_4_CHECKSUM_OK) { + if (cmd_sts & LAYER_4_CHECKSUM_OK) { skb->ip_summed = CHECKSUM_UNNECESSARY; skb->csum = htons( - (pkt_info.cmd_sts & 0x0007fff8) >> 3); + (cmd_sts & 0x0007fff8) >> 3); } - skb->protocol = eth_type_trans(skb, dev); -#ifdef MV643XX_NAPI + skb->protocol = eth_type_trans(skb, mp->dev); +#ifdef MV643XX_ETH_NAPI netif_receive_skb(skb); #else netif_rx(skb); #endif } - dev->last_rx = jiffies; + + mp->dev->last_rx = jiffies; } - mv643xx_eth_rx_refill_descs(dev); /* Fill RX ring with skb's */ - return received_packets; + rxq_refill(rxq); + + return rx; } -/* Set the mv643xx port configuration register for the speed/duplex mode. */ -static void mv643xx_eth_update_pscr(struct net_device *dev, - struct ethtool_cmd *ecmd) +#ifdef MV643XX_ETH_NAPI +static int mv643xx_eth_poll(struct napi_struct *napi, int budget) { - struct mv643xx_private *mp = netdev_priv(dev); - int port_num = mp->port_num; - u32 o_pscr, n_pscr; - unsigned int queues; + struct mv643xx_eth_private *mp; + int rx; + int i; - o_pscr = rdl(mp, PORT_SERIAL_CONTROL_REG(port_num)); - n_pscr = o_pscr; + mp = container_of(napi, struct mv643xx_eth_private, napi); - /* clear speed, duplex and rx buffer size fields */ - n_pscr &= ~(SET_MII_SPEED_TO_100 | - SET_GMII_SPEED_TO_1000 | - SET_FULL_DUPLEX_MODE | - MAX_RX_PACKET_MASK); - - if (ecmd->duplex == DUPLEX_FULL) - n_pscr |= SET_FULL_DUPLEX_MODE; - - if (ecmd->speed == SPEED_1000) - n_pscr |= SET_GMII_SPEED_TO_1000 | - MAX_RX_PACKET_9700BYTE; - else { - if (ecmd->speed == SPEED_100) - n_pscr |= SET_MII_SPEED_TO_100; - n_pscr |= MAX_RX_PACKET_1522BYTE; +#ifdef MV643XX_ETH_TX_FAST_REFILL + if (++mp->tx_clean_threshold > 5) { + mp->tx_clean_threshold = 0; + for (i = 0; i < 8; i++) + if (mp->txq_mask & (1 << i)) + txq_reclaim(mp->txq + i, 0); } +#endif - if (n_pscr != o_pscr) { - if ((o_pscr & SERIAL_PORT_ENABLE) == 0) - wrl(mp, PORT_SERIAL_CONTROL_REG(port_num), n_pscr); - else { - queues = mv643xx_eth_port_disable_tx(mp); - - o_pscr &= ~SERIAL_PORT_ENABLE; - wrl(mp, PORT_SERIAL_CONTROL_REG(port_num), o_pscr); - wrl(mp, PORT_SERIAL_CONTROL_REG(port_num), n_pscr); - wrl(mp, PORT_SERIAL_CONTROL_REG(port_num), n_pscr); - if (queues) - mv643xx_eth_port_enable_tx(mp, queues); - } + rx = 0; + for (i = 7; rx < budget && i >= 0; i--) + if (mp->rxq_mask & (1 << i)) + rx += rxq_process(mp->rxq + i, budget - rx); + + if (rx < budget) { + netif_rx_complete(mp->dev, napi); + wrl(mp, INT_CAUSE(mp->port_num), 0); + wrl(mp, INT_CAUSE_EXT(mp->port_num), 0); + wrl(mp, INT_MASK(mp->port_num), INT_TX_END | INT_RX | INT_EXT); } + + return rx; } +#endif -/* - * mv643xx_eth_int_handler - * - * Main interrupt handler for the gigbit ethernet ports - * - * Input : irq - irq number (not used) - * dev_id - a pointer to the required interface's data structure - * regs - not used - * Output : N/A - */ -static irqreturn_t mv643xx_eth_int_handler(int irq, void *dev_id) +/* tx ***********************************************************************/ +static inline unsigned int has_tiny_unaligned_frags(struct sk_buff *skb) { - struct net_device *dev = (struct net_device *)dev_id; - struct mv643xx_private *mp = netdev_priv(dev); - u32 eth_int_cause, eth_int_cause_ext = 0; - unsigned int port_num = mp->port_num; - - /* Read interrupt cause registers */ - eth_int_cause = rdl(mp, INTERRUPT_CAUSE_REG(port_num)) & - ETH_INT_UNMASK_ALL; - if (eth_int_cause & ETH_INT_CAUSE_EXT) { - eth_int_cause_ext = rdl(mp, - INTERRUPT_CAUSE_EXTEND_REG(port_num)) & - ETH_INT_UNMASK_ALL_EXT; - wrl(mp, INTERRUPT_CAUSE_EXTEND_REG(port_num), - ~eth_int_cause_ext); - } - - /* PHY status changed */ - if (eth_int_cause_ext & (ETH_INT_CAUSE_PHY | ETH_INT_CAUSE_STATE)) { - struct ethtool_cmd cmd; + int frag; - if (mii_link_ok(&mp->mii)) { - mii_ethtool_gset(&mp->mii, &cmd); - mv643xx_eth_update_pscr(dev, &cmd); - mv643xx_eth_port_enable_tx(mp, ETH_TX_QUEUES_ENABLED); - if (!netif_carrier_ok(dev)) { - netif_carrier_on(dev); - if (mp->tx_ring_size - mp->tx_desc_count >= - MAX_DESCS_PER_SKB) - netif_wake_queue(dev); - } - } else if (netif_carrier_ok(dev)) { - netif_stop_queue(dev); - netif_carrier_off(dev); - } + for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) { + skb_frag_t *fragp = &skb_shinfo(skb)->frags[frag]; + if (fragp->size <= 8 && fragp->page_offset & 7) + return 1; } -#ifdef MV643XX_NAPI - if (eth_int_cause & ETH_INT_CAUSE_RX) { - /* schedule the NAPI poll routine to maintain port */ - wrl(mp, INTERRUPT_MASK_REG(port_num), ETH_INT_MASK_ALL); + return 0; +} - /* wait for previous write to complete */ - rdl(mp, INTERRUPT_MASK_REG(port_num)); +static int txq_alloc_desc_index(struct tx_queue *txq) +{ + int tx_desc_curr; - netif_rx_schedule(dev, &mp->napi); - } -#else - if (eth_int_cause & ETH_INT_CAUSE_RX) - mv643xx_eth_receive_queue(dev, INT_MAX); -#endif - if (eth_int_cause_ext & ETH_INT_CAUSE_TX) - mv643xx_eth_free_completed_tx_descs(dev); + BUG_ON(txq->tx_desc_count >= txq->tx_ring_size); - /* - * If no real interrupt occured, exit. - * This can happen when using gigE interrupt coalescing mechanism. - */ - if ((eth_int_cause == 0x0) && (eth_int_cause_ext == 0x0)) - return IRQ_NONE; + tx_desc_curr = txq->tx_curr_desc; + txq->tx_curr_desc = (tx_desc_curr + 1) % txq->tx_ring_size; - return IRQ_HANDLED; -} + BUG_ON(txq->tx_curr_desc == txq->tx_used_desc); -#ifdef MV643XX_COAL + return tx_desc_curr; +} -/* - * eth_port_set_rx_coal - Sets coalescing interrupt mechanism on RX path - * - * DESCRIPTION: - * This routine sets the RX coalescing interrupt mechanism parameter. - * This parameter is a timeout counter, that counts in 64 t_clk - * chunks ; that when timeout event occurs a maskable interrupt - * occurs. - * The parameter is calculated using the tClk of the MV-643xx chip - * , and the required delay of the interrupt in usec. - * - * INPUT: - * struct mv643xx_private *mp Ethernet port - * unsigned int delay Delay in usec - * - * OUTPUT: - * Interrupt coalescing mechanism value is set in MV-643xx chip. - * - * RETURN: - * The interrupt coalescing value set in the gigE port. - * - */ -static unsigned int eth_port_set_rx_coal(struct mv643xx_private *mp, - unsigned int delay) +static void txq_submit_frag_skb(struct tx_queue *txq, struct sk_buff *skb) { - unsigned int port_num = mp->port_num; - unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64; + int nr_frags = skb_shinfo(skb)->nr_frags; + int frag; - /* Set RX Coalescing mechanism */ - wrl(mp, SDMA_CONFIG_REG(port_num), - ((coal & 0x3fff) << 8) | - (rdl(mp, SDMA_CONFIG_REG(port_num)) - & 0xffc000ff)); + for (frag = 0; frag < nr_frags; frag++) { + skb_frag_t *this_frag; + int tx_index; + struct tx_desc *desc; - return coal; -} -#endif + this_frag = &skb_shinfo(skb)->frags[frag]; + tx_index = txq_alloc_desc_index(txq); + desc = &txq->tx_desc_area[tx_index]; -/* - * eth_port_set_tx_coal - Sets coalescing interrupt mechanism on TX path - * - * DESCRIPTION: - * This routine sets the TX coalescing interrupt mechanism parameter. - * This parameter is a timeout counter, that counts in 64 t_clk - * chunks ; that when timeout event occurs a maskable interrupt - * occurs. - * The parameter is calculated using the t_cLK frequency of the - * MV-643xx chip and the required delay in the interrupt in uSec - * - * INPUT: - * struct mv643xx_private *mp Ethernet port - * unsigned int delay Delay in uSeconds - * - * OUTPUT: - * Interrupt coalescing mechanism value is set in MV-643xx chip. - * - * RETURN: - * The interrupt coalescing value set in the gigE port. - * - */ -static unsigned int eth_port_set_tx_coal(struct mv643xx_private *mp, - unsigned int delay) -{ - unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64; + /* + * The last fragment will generate an interrupt + * which will free the skb on TX completion. + */ + if (frag == nr_frags - 1) { + desc->cmd_sts = BUFFER_OWNED_BY_DMA | + ZERO_PADDING | TX_LAST_DESC | + TX_ENABLE_INTERRUPT; + txq->tx_skb[tx_index] = skb; + } else { + desc->cmd_sts = BUFFER_OWNED_BY_DMA; + txq->tx_skb[tx_index] = NULL; + } - /* Set TX Coalescing mechanism */ - wrl(mp, TX_FIFO_URGENT_THRESHOLD_REG(mp->port_num), coal << 4); + desc->l4i_chk = 0; + desc->byte_cnt = this_frag->size; + desc->buf_ptr = dma_map_page(NULL, this_frag->page, + this_frag->page_offset, + this_frag->size, + DMA_TO_DEVICE); + } +} - return coal; +static inline __be16 sum16_as_be(__sum16 sum) +{ + return (__force __be16)sum; } -/* - * ether_init_rx_desc_ring - Curve a Rx chain desc list and buffer in memory. - * - * DESCRIPTION: - * This function prepares a Rx chained list of descriptors and packet - * buffers in a form of a ring. The routine must be called after port - * initialization routine and before port start routine. - * The Ethernet SDMA engine uses CPU bus addresses to access the various - * devices in the system (i.e. DRAM). This function uses the ethernet - * struct 'virtual to physical' routine (set by the user) to set the ring - * with physical addresses. - * - * INPUT: - * struct mv643xx_private *mp Ethernet Port Control srtuct. - * - * OUTPUT: - * The routine updates the Ethernet port control struct with information - * regarding the Rx descriptors and buffers. - * - * RETURN: - * None. - */ -static void ether_init_rx_desc_ring(struct mv643xx_private *mp) +static void txq_submit_skb(struct tx_queue *txq, struct sk_buff *skb) { - volatile struct eth_rx_desc *p_rx_desc; - int rx_desc_num = mp->rx_ring_size; - int i; + int nr_frags = skb_shinfo(skb)->nr_frags; + int tx_index; + struct tx_desc *desc; + u32 cmd_sts; + int length; - /* initialize the next_desc_ptr links in the Rx descriptors ring */ - p_rx_desc = (struct eth_rx_desc *)mp->p_rx_desc_area; - for (i = 0; i < rx_desc_num; i++) { - p_rx_desc[i].next_desc_ptr = mp->rx_desc_dma + - ((i + 1) % rx_desc_num) * sizeof(struct eth_rx_desc); + cmd_sts = TX_FIRST_DESC | GEN_CRC | BUFFER_OWNED_BY_DMA; + + tx_index = txq_alloc_desc_index(txq); + desc = &txq->tx_desc_area[tx_index]; + + if (nr_frags) { + txq_submit_frag_skb(txq, skb); + + length = skb_headlen(skb); + txq->tx_skb[tx_index] = NULL; + } else { + cmd_sts |= ZERO_PADDING | TX_LAST_DESC | TX_ENABLE_INTERRUPT; + length = skb->len; + txq->tx_skb[tx_index] = skb; } - /* Save Rx desc pointer to driver struct. */ - mp->rx_curr_desc_q = 0; - mp->rx_used_desc_q = 0; + desc->byte_cnt = length; + desc->buf_ptr = dma_map_single(NULL, skb->data, length, DMA_TO_DEVICE); - mp->rx_desc_area_size = rx_desc_num * sizeof(struct eth_rx_desc); -} + if (skb->ip_summed == CHECKSUM_PARTIAL) { + BUG_ON(skb->protocol != htons(ETH_P_IP)); -/* - * ether_init_tx_desc_ring - Curve a Tx chain desc list and buffer in memory. - * - * DESCRIPTION: - * This function prepares a Tx chained list of descriptors and packet - * buffers in a form of a ring. The routine must be called after port - * initialization routine and before port start routine. - * The Ethernet SDMA engine uses CPU bus addresses to access the various - * devices in the system (i.e. DRAM). This function uses the ethernet - * struct 'virtual to physical' routine (set by the user) to set the ring - * with physical addresses. - * - * INPUT: - * struct mv643xx_private *mp Ethernet Port Control srtuct. - * - * OUTPUT: - * The routine updates the Ethernet port control struct with information - * regarding the Tx descriptors and buffers. - * - * RETURN: - * None. - */ -static void ether_init_tx_desc_ring(struct mv643xx_private *mp) -{ - int tx_desc_num = mp->tx_ring_size; - struct eth_tx_desc *p_tx_desc; - int i; + cmd_sts |= GEN_TCP_UDP_CHECKSUM | + GEN_IP_V4_CHECKSUM | + ip_hdr(skb)->ihl << TX_IHL_SHIFT; - /* Initialize the next_desc_ptr links in the Tx descriptors ring */ - p_tx_desc = (struct eth_tx_desc *)mp->p_tx_desc_area; - for (i = 0; i < tx_desc_num; i++) { - p_tx_desc[i].next_desc_ptr = mp->tx_desc_dma + - ((i + 1) % tx_desc_num) * sizeof(struct eth_tx_desc); + switch (ip_hdr(skb)->protocol) { + case IPPROTO_UDP: + cmd_sts |= UDP_FRAME; + desc->l4i_chk = ntohs(sum16_as_be(udp_hdr(skb)->check)); + break; + case IPPROTO_TCP: + desc->l4i_chk = ntohs(sum16_as_be(tcp_hdr(skb)->check)); + break; + default: + BUG(); + } + } else { + /* Errata BTS #50, IHL must be 5 if no HW checksum */ + cmd_sts |= 5 << TX_IHL_SHIFT; + desc->l4i_chk = 0; } - mp->tx_curr_desc_q = 0; - mp->tx_used_desc_q = 0; + /* ensure all other descriptors are written before first cmd_sts */ + wmb(); + desc->cmd_sts = cmd_sts; + + /* ensure all descriptors are written before poking hardware */ + wmb(); + txq_enable(txq); - mp->tx_desc_area_size = tx_desc_num * sizeof(struct eth_tx_desc); + txq->tx_desc_count += nr_frags + 1; } -static int mv643xx_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) +static int mv643xx_eth_xmit(struct sk_buff *skb, struct net_device *dev) { - struct mv643xx_private *mp = netdev_priv(dev); - int err; + struct mv643xx_eth_private *mp = netdev_priv(dev); + struct net_device_stats *stats = &dev->stats; + struct tx_queue *txq; + unsigned long flags; - spin_lock_irq(&mp->lock); - err = mii_ethtool_sset(&mp->mii, cmd); - spin_unlock_irq(&mp->lock); + if (has_tiny_unaligned_frags(skb) && __skb_linearize(skb)) { + stats->tx_dropped++; + dev_printk(KERN_DEBUG, &dev->dev, + "failed to linearize skb with tiny " + "unaligned fragment\n"); + return NETDEV_TX_BUSY; + } - return err; -} + spin_lock_irqsave(&mp->lock, flags); -static int mv643xx_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) -{ - struct mv643xx_private *mp = netdev_priv(dev); - int err; + txq = mp->txq + mp->txq_primary; - spin_lock_irq(&mp->lock); - err = mii_ethtool_gset(&mp->mii, cmd); - spin_unlock_irq(&mp->lock); + if (txq->tx_ring_size - txq->tx_desc_count < MAX_DESCS_PER_SKB) { + spin_unlock_irqrestore(&mp->lock, flags); + if (txq->index == mp->txq_primary && net_ratelimit()) + dev_printk(KERN_ERR, &dev->dev, + "primary tx queue full?!\n"); + kfree_skb(skb); + return NETDEV_TX_OK; + } - /* The PHY may support 1000baseT_Half, but the mv643xx does not */ - cmd->supported &= ~SUPPORTED_1000baseT_Half; - cmd->advertising &= ~ADVERTISED_1000baseT_Half; + txq_submit_skb(txq, skb); + stats->tx_bytes += skb->len; + stats->tx_packets++; + dev->trans_start = jiffies; - return err; + if (txq->index == mp->txq_primary) { + int entries_left; + + entries_left = txq->tx_ring_size - txq->tx_desc_count; + if (entries_left < MAX_DESCS_PER_SKB) + netif_stop_queue(dev); + } + + spin_unlock_irqrestore(&mp->lock, flags); + + return NETDEV_TX_OK; } + +/* tx rate control **********************************************************/ /* - * mv643xx_eth_open - * - * This function is called when openning the network device. The function - * should initialize all the hardware, initialize cyclic Rx/Tx - * descriptors chain and buffers and allocate an IRQ to the network - * device. - * - * Input : a pointer to the network device structure - * - * Output : zero of success , nonzero if fails. + * Set total maximum TX rate (shared by all TX queues for this port) + * to 'rate' bits per second, with a maximum burst of 'burst' bytes. */ - -static int mv643xx_eth_open(struct net_device *dev) +static void tx_set_rate(struct mv643xx_eth_private *mp, int rate, int burst) { - struct mv643xx_private *mp = netdev_priv(dev); - unsigned int port_num = mp->port_num; - unsigned int size; - int err; + int token_rate; + int mtu; + int bucket_size; - /* Clear any pending ethernet port interrupts */ - wrl(mp, INTERRUPT_CAUSE_REG(port_num), 0); - wrl(mp, INTERRUPT_CAUSE_EXTEND_REG(port_num), 0); - /* wait for previous write to complete */ - rdl(mp, INTERRUPT_CAUSE_EXTEND_REG(port_num)); + token_rate = ((rate / 1000) * 64) / (mp->shared->t_clk / 1000); + if (token_rate > 1023) + token_rate = 1023; - err = request_irq(dev->irq, mv643xx_eth_int_handler, - IRQF_SHARED | IRQF_SAMPLE_RANDOM, dev->name, dev); - if (err) { - printk(KERN_ERR "%s: Can not assign IRQ\n", dev->name); - return -EAGAIN; - } + mtu = (mp->dev->mtu + 255) >> 8; + if (mtu > 63) + mtu = 63; - eth_port_init(mp); + bucket_size = (burst + 255) >> 8; + if (bucket_size > 65535) + bucket_size = 65535; - memset(&mp->timeout, 0, sizeof(struct timer_list)); - mp->timeout.function = mv643xx_eth_rx_refill_descs_timer_wrapper; - mp->timeout.data = (unsigned long)dev; - - /* Allocate RX and TX skb rings */ - mp->rx_skb = kmalloc(sizeof(*mp->rx_skb) * mp->rx_ring_size, - GFP_KERNEL); - if (!mp->rx_skb) { - printk(KERN_ERR "%s: Cannot allocate Rx skb ring\n", dev->name); - err = -ENOMEM; - goto out_free_irq; - } - mp->tx_skb = kmalloc(sizeof(*mp->tx_skb) * mp->tx_ring_size, - GFP_KERNEL); - if (!mp->tx_skb) { - printk(KERN_ERR "%s: Cannot allocate Tx skb ring\n", dev->name); - err = -ENOMEM; - goto out_free_rx_skb; + if (mp->shared->tx_bw_control_moved) { + wrl(mp, TX_BW_RATE_MOVED(mp->port_num), token_rate); + wrl(mp, TX_BW_MTU_MOVED(mp->port_num), mtu); + wrl(mp, TX_BW_BURST_MOVED(mp->port_num), bucket_size); + } else { + wrl(mp, TX_BW_RATE(mp->port_num), token_rate); + wrl(mp, TX_BW_MTU(mp->port_num), mtu); + wrl(mp, TX_BW_BURST(mp->port_num), bucket_size); } +} - /* Allocate TX ring */ - mp->tx_desc_count = 0; - size = mp->tx_ring_size * sizeof(struct eth_tx_desc); - mp->tx_desc_area_size = size; - - if (mp->tx_sram_size) { - mp->p_tx_desc_area = ioremap(mp->tx_sram_addr, - mp->tx_sram_size); - mp->tx_desc_dma = mp->tx_sram_addr; - } else - mp->p_tx_desc_area = dma_alloc_coherent(NULL, size, - &mp->tx_desc_dma, - GFP_KERNEL); +static void txq_set_rate(struct tx_queue *txq, int rate, int burst) +{ + struct mv643xx_eth_private *mp = txq_to_mp(txq); + int token_rate; + int bucket_size; - if (!mp->p_tx_desc_area) { - printk(KERN_ERR "%s: Cannot allocate Tx Ring (size %d bytes)\n", - dev->name, size); - err = -ENOMEM; - goto out_free_tx_skb; - } - BUG_ON((u32) mp->p_tx_desc_area & 0xf); /* check 16-byte alignment */ - memset((void *)mp->p_tx_desc_area, 0, mp->tx_desc_area_size); - - ether_init_tx_desc_ring(mp); - - /* Allocate RX ring */ - mp->rx_desc_count = 0; - size = mp->rx_ring_size * sizeof(struct eth_rx_desc); - mp->rx_desc_area_size = size; - - if (mp->rx_sram_size) { - mp->p_rx_desc_area = ioremap(mp->rx_sram_addr, - mp->rx_sram_size); - mp->rx_desc_dma = mp->rx_sram_addr; - } else - mp->p_rx_desc_area = dma_alloc_coherent(NULL, size, - &mp->rx_desc_dma, - GFP_KERNEL); + token_rate = ((rate / 1000) * 64) / (mp->shared->t_clk / 1000); + if (token_rate > 1023) + token_rate = 1023; - if (!mp->p_rx_desc_area) { - printk(KERN_ERR "%s: Cannot allocate Rx ring (size %d bytes)\n", - dev->name, size); - printk(KERN_ERR "%s: Freeing previously allocated TX queues...", - dev->name); - if (mp->rx_sram_size) - iounmap(mp->p_tx_desc_area); - else - dma_free_coherent(NULL, mp->tx_desc_area_size, - mp->p_tx_desc_area, mp->tx_desc_dma); - err = -ENOMEM; - goto out_free_tx_skb; - } - memset((void *)mp->p_rx_desc_area, 0, size); + bucket_size = (burst + 255) >> 8; + if (bucket_size > 65535) + bucket_size = 65535; - ether_init_rx_desc_ring(mp); - - mv643xx_eth_rx_refill_descs(dev); /* Fill RX ring with skb's */ + wrl(mp, TXQ_BW_TOKENS(mp->port_num, txq->index), token_rate << 14); + wrl(mp, TXQ_BW_CONF(mp->port_num, txq->index), + (bucket_size << 10) | token_rate); +} -#ifdef MV643XX_NAPI - napi_enable(&mp->napi); -#endif +static void txq_set_fixed_prio_mode(struct tx_queue *txq) +{ + struct mv643xx_eth_private *mp = txq_to_mp(txq); + int off; + u32 val; - eth_port_start(dev); + /* + * Turn on fixed priority mode. + */ + if (mp->shared->tx_bw_control_moved) + off = TXQ_FIX_PRIO_CONF_MOVED(mp->port_num); + else + off = TXQ_FIX_PRIO_CONF(mp->port_num); - /* Interrupt Coalescing */ + val = rdl(mp, off); + val |= 1 << txq->index; + wrl(mp, off, val); +} -#ifdef MV643XX_COAL - mp->rx_int_coal = - eth_port_set_rx_coal(mp, MV643XX_RX_COAL); -#endif +static void txq_set_wrr(struct tx_queue *txq, int weight) +{ + struct mv643xx_eth_private *mp = txq_to_mp(txq); + int off; + u32 val; - mp->tx_int_coal = - eth_port_set_tx_coal(mp, MV643XX_TX_COAL); + /* + * Turn off fixed priority mode. + */ + if (mp->shared->tx_bw_control_moved) + off = TXQ_FIX_PRIO_CONF_MOVED(mp->port_num); + else + off = TXQ_FIX_PRIO_CONF(mp->port_num); - /* Unmask phy and link status changes interrupts */ - wrl(mp, INTERRUPT_EXTEND_MASK_REG(port_num), ETH_INT_UNMASK_ALL_EXT); + val = rdl(mp, off); + val &= ~(1 << txq->index); + wrl(mp, off, val); - /* Unmask RX buffer and TX end interrupt */ - wrl(mp, INTERRUPT_MASK_REG(port_num), ETH_INT_UNMASK_ALL); + /* + * Configure WRR weight for this queue. + */ + off = TXQ_BW_WRR_CONF(mp->port_num, txq->index); - return 0; + val = rdl(mp, off); + val = (val & ~0xff) | (weight & 0xff); + wrl(mp, off, val); +} -out_free_tx_skb: - kfree(mp->tx_skb); -out_free_rx_skb: - kfree(mp->rx_skb); -out_free_irq: - free_irq(dev->irq, dev); - return err; -} +/* mii management interface *************************************************/ +#define SMI_BUSY 0x10000000 +#define SMI_READ_VALID 0x08000000 +#define SMI_OPCODE_READ 0x04000000 +#define SMI_OPCODE_WRITE 0x00000000 -static void mv643xx_eth_free_tx_rings(struct net_device *dev) +static void smi_reg_read(struct mv643xx_eth_private *mp, unsigned int addr, + unsigned int reg, unsigned int *value) { - struct mv643xx_private *mp = netdev_priv(dev); + void __iomem *smi_reg = mp->shared_smi->base + SMI_REG; + unsigned long flags; + int i; - /* Stop Tx Queues */ - mv643xx_eth_port_disable_tx(mp); + /* the SMI register is a shared resource */ + spin_lock_irqsave(&mp->shared_smi->phy_lock, flags); - /* Free outstanding skb's on TX ring */ - mv643xx_eth_free_all_tx_descs(dev); + /* wait for the SMI register to become available */ + for (i = 0; readl(smi_reg) & SMI_BUSY; i++) { + if (i == 1000) { + printk("%s: PHY busy timeout\n", mp->dev->name); + goto out; + } + udelay(10); + } - BUG_ON(mp->tx_used_desc_q != mp->tx_curr_desc_q); + writel(SMI_OPCODE_READ | (reg << 21) | (addr << 16), smi_reg); - /* Free TX ring */ - if (mp->tx_sram_size) - iounmap(mp->p_tx_desc_area); - else - dma_free_coherent(NULL, mp->tx_desc_area_size, - mp->p_tx_desc_area, mp->tx_desc_dma); + /* now wait for the data to be valid */ + for (i = 0; !(readl(smi_reg) & SMI_READ_VALID); i++) { + if (i == 1000) { + printk("%s: PHY read timeout\n", mp->dev->name); + goto out; + } + udelay(10); + } + + *value = readl(smi_reg) & 0xffff; +out: + spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags); } -static void mv643xx_eth_free_rx_rings(struct net_device *dev) +static void smi_reg_write(struct mv643xx_eth_private *mp, + unsigned int addr, + unsigned int reg, unsigned int value) { - struct mv643xx_private *mp = netdev_priv(dev); - int curr; + void __iomem *smi_reg = mp->shared_smi->base + SMI_REG; + unsigned long flags; + int i; - /* Stop RX Queues */ - mv643xx_eth_port_disable_rx(mp); + /* the SMI register is a shared resource */ + spin_lock_irqsave(&mp->shared_smi->phy_lock, flags); - /* Free preallocated skb's on RX rings */ - for (curr = 0; mp->rx_desc_count && curr < mp->rx_ring_size; curr++) { - if (mp->rx_skb[curr]) { - dev_kfree_skb(mp->rx_skb[curr]); - mp->rx_desc_count--; + /* wait for the SMI register to become available */ + for (i = 0; readl(smi_reg) & SMI_BUSY; i++) { + if (i == 1000) { + printk("%s: PHY busy timeout\n", mp->dev->name); + goto out; } + udelay(10); } - if (mp->rx_desc_count) - printk(KERN_ERR - "%s: Error in freeing Rx Ring. %d skb's still" - " stuck in RX Ring - ignoring them\n", dev->name, - mp->rx_desc_count); - /* Free RX ring */ - if (mp->rx_sram_size) - iounmap(mp->p_rx_desc_area); - else - dma_free_coherent(NULL, mp->rx_desc_area_size, - mp->p_rx_desc_area, mp->rx_desc_dma); + writel(SMI_OPCODE_WRITE | (reg << 21) | + (addr << 16) | (value & 0xffff), smi_reg); +out: + spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags); } -/* - * mv643xx_eth_stop - * - * This function is used when closing the network device. - * It updates the hardware, - * release all memory that holds buffers and descriptors and release the IRQ. - * Input : a pointer to the device structure - * Output : zero if success , nonzero if fails - */ -static int mv643xx_eth_stop(struct net_device *dev) +/* mib counters *************************************************************/ +static inline u32 mib_read(struct mv643xx_eth_private *mp, int offset) { - struct mv643xx_private *mp = netdev_priv(dev); - unsigned int port_num = mp->port_num; + return rdl(mp, MIB_COUNTERS(mp->port_num) + offset); +} - /* Mask all interrupts on ethernet port */ - wrl(mp, INTERRUPT_MASK_REG(port_num), ETH_INT_MASK_ALL); - /* wait for previous write to complete */ - rdl(mp, INTERRUPT_MASK_REG(port_num)); +static void mib_counters_clear(struct mv643xx_eth_private *mp) +{ + int i; -#ifdef MV643XX_NAPI - napi_disable(&mp->napi); -#endif - netif_carrier_off(dev); - netif_stop_queue(dev); + for (i = 0; i < 0x80; i += 4) + mib_read(mp, i); +} + +static void mib_counters_update(struct mv643xx_eth_private *mp) +{ + struct mib_counters *p = &mp->mib_counters; + + p->good_octets_received += mib_read(mp, 0x00); + p->good_octets_received += (u64)mib_read(mp, 0x04) << 32; + p->bad_octets_received += mib_read(mp, 0x08); + p->internal_mac_transmit_err += mib_read(mp, 0x0c); + p->good_frames_received += mib_read(mp, 0x10); + p->bad_frames_received += mib_read(mp, 0x14); + p->broadcast_frames_received += mib_read(mp, 0x18); + p->multicast_frames_received += mib_read(mp, 0x1c); + p->frames_64_octets += mib_read(mp, 0x20); + p->frames_65_to_127_octets += mib_read(mp, 0x24); + p->frames_128_to_255_octets += mib_read(mp, 0x28); + p->frames_256_to_511_octets += mib_read(mp, 0x2c); + p->frames_512_to_1023_octets += mib_read(mp, 0x30); + p->frames_1024_to_max_octets += mib_read(mp, 0x34); + p->good_octets_sent += mib_read(mp, 0x38); + p->good_octets_sent += (u64)mib_read(mp, 0x3c) << 32; + p->good_frames_sent += mib_read(mp, 0x40); + p->excessive_collision += mib_read(mp, 0x44); + p->multicast_frames_sent += mib_read(mp, 0x48); + p->broadcast_frames_sent += mib_read(mp, 0x4c); + p->unrec_mac_control_received += mib_read(mp, 0x50); + p->fc_sent += mib_read(mp, 0x54); + p->good_fc_received += mib_read(mp, 0x58); + p->bad_fc_received += mib_read(mp, 0x5c); + p->undersize_received += mib_read(mp, 0x60); + p->fragments_received += mib_read(mp, 0x64); + p->oversize_received += mib_read(mp, 0x68); + p->jabber_received += mib_read(mp, 0x6c); + p->mac_receive_error += mib_read(mp, 0x70); + p->bad_crc_event += mib_read(mp, 0x74); + p->collision += mib_read(mp, 0x78); + p->late_collision += mib_read(mp, 0x7c); +} + + +/* ethtool ******************************************************************/ +struct mv643xx_eth_stats { + char stat_string[ETH_GSTRING_LEN]; + int sizeof_stat; + int netdev_off; + int mp_off; +}; + +#define SSTAT(m) \ + { #m, FIELD_SIZEOF(struct net_device_stats, m), \ + offsetof(struct net_device, stats.m), -1 } + +#define MIBSTAT(m) \ + { #m, FIELD_SIZEOF(struct mib_counters, m), \ + -1, offsetof(struct mv643xx_eth_private, mib_counters.m) } + +static const struct mv643xx_eth_stats mv643xx_eth_stats[] = { + SSTAT(rx_packets), + SSTAT(tx_packets), + SSTAT(rx_bytes), + SSTAT(tx_bytes), + SSTAT(rx_errors), + SSTAT(tx_errors), + SSTAT(rx_dropped), + SSTAT(tx_dropped), + MIBSTAT(good_octets_received), + MIBSTAT(bad_octets_received), + MIBSTAT(internal_mac_transmit_err), + MIBSTAT(good_frames_received), + MIBSTAT(bad_frames_received), + MIBSTAT(broadcast_frames_received), + MIBSTAT(multicast_frames_received), + MIBSTAT(frames_64_octets), + MIBSTAT(frames_65_to_127_octets), + MIBSTAT(frames_128_to_255_octets), + MIBSTAT(frames_256_to_511_octets), + MIBSTAT(frames_512_to_1023_octets), + MIBSTAT(frames_1024_to_max_octets), + MIBSTAT(good_octets_sent), + MIBSTAT(good_frames_sent), + MIBSTAT(excessive_collision), + MIBSTAT(multicast_frames_sent), + MIBSTAT(broadcast_frames_sent), + MIBSTAT(unrec_mac_control_received), + MIBSTAT(fc_sent), + MIBSTAT(good_fc_received), + MIBSTAT(bad_fc_received), + MIBSTAT(undersize_received), + MIBSTAT(fragments_received), + MIBSTAT(oversize_received), + MIBSTAT(jabber_received), + MIBSTAT(mac_receive_error), + MIBSTAT(bad_crc_event), + MIBSTAT(collision), + MIBSTAT(late_collision), +}; - eth_port_reset(mp); +static int mv643xx_eth_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) +{ + struct mv643xx_eth_private *mp = netdev_priv(dev); + int err; - mv643xx_eth_free_tx_rings(dev); - mv643xx_eth_free_rx_rings(dev); + spin_lock_irq(&mp->lock); + err = mii_ethtool_gset(&mp->mii, cmd); + spin_unlock_irq(&mp->lock); - free_irq(dev->irq, dev); + /* + * The MAC does not support 1000baseT_Half. + */ + cmd->supported &= ~SUPPORTED_1000baseT_Half; + cmd->advertising &= ~ADVERTISED_1000baseT_Half; + + return err; +} + +static int mv643xx_eth_get_settings_phyless(struct net_device *dev, struct ethtool_cmd *cmd) +{ + cmd->supported = SUPPORTED_MII; + cmd->advertising = ADVERTISED_MII; + cmd->speed = SPEED_1000; + cmd->duplex = DUPLEX_FULL; + cmd->port = PORT_MII; + cmd->phy_address = 0; + cmd->transceiver = XCVR_INTERNAL; + cmd->autoneg = AUTONEG_DISABLE; + cmd->maxtxpkt = 1; + cmd->maxrxpkt = 1; return 0; } -#ifdef MV643XX_NAPI -/* - * mv643xx_poll - * - * This function is used in case of NAPI - */ -static int mv643xx_poll(struct napi_struct *napi, int budget) +static int mv643xx_eth_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) { - struct mv643xx_private *mp = container_of(napi, struct mv643xx_private, napi); - struct net_device *dev = mp->dev; - unsigned int port_num = mp->port_num; - int work_done; + struct mv643xx_eth_private *mp = netdev_priv(dev); + int err; -#ifdef MV643XX_TX_FAST_REFILL - if (++mp->tx_clean_threshold > 5) { - mv643xx_eth_free_completed_tx_descs(dev); - mp->tx_clean_threshold = 0; - } -#endif + /* + * The MAC does not support 1000baseT_Half. + */ + cmd->advertising &= ~ADVERTISED_1000baseT_Half; - work_done = 0; - if ((rdl(mp, RX_CURRENT_QUEUE_DESC_PTR_0(port_num))) - != (u32) mp->rx_used_desc_q) - work_done = mv643xx_eth_receive_queue(dev, budget); + spin_lock_irq(&mp->lock); + err = mii_ethtool_sset(&mp->mii, cmd); + spin_unlock_irq(&mp->lock); - if (work_done < budget) { - netif_rx_complete(dev, napi); - wrl(mp, INTERRUPT_CAUSE_REG(port_num), 0); - wrl(mp, INTERRUPT_CAUSE_EXTEND_REG(port_num), 0); - wrl(mp, INTERRUPT_MASK_REG(port_num), ETH_INT_UNMASK_ALL); - } + return err; +} - return work_done; +static int mv643xx_eth_set_settings_phyless(struct net_device *dev, struct ethtool_cmd *cmd) +{ + return -EINVAL; } -#endif -/** - * has_tiny_unaligned_frags - check if skb has any small, unaligned fragments - * - * Hardware can't handle unaligned fragments smaller than 9 bytes. - * This helper function detects that case. - */ +static void mv643xx_eth_get_drvinfo(struct net_device *dev, + struct ethtool_drvinfo *drvinfo) +{ + strncpy(drvinfo->driver, mv643xx_eth_driver_name, 32); + strncpy(drvinfo->version, mv643xx_eth_driver_version, 32); + strncpy(drvinfo->fw_version, "N/A", 32); + strncpy(drvinfo->bus_info, "platform", 32); + drvinfo->n_stats = ARRAY_SIZE(mv643xx_eth_stats); +} -static inline unsigned int has_tiny_unaligned_frags(struct sk_buff *skb) +static int mv643xx_eth_nway_reset(struct net_device *dev) { - unsigned int frag; - skb_frag_t *fragp; + struct mv643xx_eth_private *mp = netdev_priv(dev); - for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) { - fragp = &skb_shinfo(skb)->frags[frag]; - if (fragp->size <= 8 && fragp->page_offset & 0x7) - return 1; - } - return 0; + return mii_nway_restart(&mp->mii); } -/** - * eth_alloc_tx_desc_index - return the index of the next available tx desc - */ -static int eth_alloc_tx_desc_index(struct mv643xx_private *mp) +static int mv643xx_eth_nway_reset_phyless(struct net_device *dev) { - int tx_desc_curr; - - BUG_ON(mp->tx_desc_count >= mp->tx_ring_size); + return -EINVAL; +} - tx_desc_curr = mp->tx_curr_desc_q; - mp->tx_curr_desc_q = (tx_desc_curr + 1) % mp->tx_ring_size; +static u32 mv643xx_eth_get_link(struct net_device *dev) +{ + struct mv643xx_eth_private *mp = netdev_priv(dev); - BUG_ON(mp->tx_curr_desc_q == mp->tx_used_desc_q); + return mii_link_ok(&mp->mii); +} - return tx_desc_curr; +static u32 mv643xx_eth_get_link_phyless(struct net_device *dev) +{ + return 1; } -/** - * eth_tx_fill_frag_descs - fill tx hw descriptors for an skb's fragments. - * - * Ensure the data for each fragment to be transmitted is mapped properly, - * then fill in descriptors in the tx hw queue. - */ -static void eth_tx_fill_frag_descs(struct mv643xx_private *mp, - struct sk_buff *skb) +static void mv643xx_eth_get_strings(struct net_device *dev, + uint32_t stringset, uint8_t *data) { - int frag; - int tx_index; - struct eth_tx_desc *desc; + int i; - for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) { - skb_frag_t *this_frag = &skb_shinfo(skb)->frags[frag]; - - tx_index = eth_alloc_tx_desc_index(mp); - desc = &mp->p_tx_desc_area[tx_index]; - - desc->cmd_sts = ETH_BUFFER_OWNED_BY_DMA; - /* Last Frag enables interrupt and frees the skb */ - if (frag == (skb_shinfo(skb)->nr_frags - 1)) { - desc->cmd_sts |= ETH_ZERO_PADDING | - ETH_TX_LAST_DESC | - ETH_TX_ENABLE_INTERRUPT; - mp->tx_skb[tx_index] = skb; - } else - mp->tx_skb[tx_index] = NULL; - - desc = &mp->p_tx_desc_area[tx_index]; - desc->l4i_chk = 0; - desc->byte_cnt = this_frag->size; - desc->buf_ptr = dma_map_page(NULL, this_frag->page, - this_frag->page_offset, - this_frag->size, - DMA_TO_DEVICE); + if (stringset == ETH_SS_STATS) { + for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) { + memcpy(data + i * ETH_GSTRING_LEN, + mv643xx_eth_stats[i].stat_string, + ETH_GSTRING_LEN); + } } } -static inline __be16 sum16_as_be(__sum16 sum) +static void mv643xx_eth_get_ethtool_stats(struct net_device *dev, + struct ethtool_stats *stats, + uint64_t *data) { - return (__force __be16)sum; -} + struct mv643xx_eth_private *mp = dev->priv; + int i; -/** - * eth_tx_submit_descs_for_skb - submit data from an skb to the tx hw - * - * Ensure the data for an skb to be transmitted is mapped properly, - * then fill in descriptors in the tx hw queue and start the hardware. - */ -static void eth_tx_submit_descs_for_skb(struct mv643xx_private *mp, - struct sk_buff *skb) -{ - int tx_index; - struct eth_tx_desc *desc; - u32 cmd_sts; - int length; - int nr_frags = skb_shinfo(skb)->nr_frags; + mib_counters_update(mp); - cmd_sts = ETH_TX_FIRST_DESC | ETH_GEN_CRC | ETH_BUFFER_OWNED_BY_DMA; + for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) { + const struct mv643xx_eth_stats *stat; + void *p; - tx_index = eth_alloc_tx_desc_index(mp); - desc = &mp->p_tx_desc_area[tx_index]; + stat = mv643xx_eth_stats + i; - if (nr_frags) { - eth_tx_fill_frag_descs(mp, skb); + if (stat->netdev_off >= 0) + p = ((void *)mp->dev) + stat->netdev_off; + else + p = ((void *)mp) + stat->mp_off; - length = skb_headlen(skb); - mp->tx_skb[tx_index] = NULL; - } else { - cmd_sts |= ETH_ZERO_PADDING | - ETH_TX_LAST_DESC | - ETH_TX_ENABLE_INTERRUPT; - length = skb->len; - mp->tx_skb[tx_index] = skb; + data[i] = (stat->sizeof_stat == 8) ? + *(uint64_t *)p : *(uint32_t *)p; } +} - desc->byte_cnt = length; - desc->buf_ptr = dma_map_single(NULL, skb->data, length, DMA_TO_DEVICE); +static int mv643xx_eth_get_sset_count(struct net_device *dev, int sset) +{ + if (sset == ETH_SS_STATS) + return ARRAY_SIZE(mv643xx_eth_stats); - if (skb->ip_summed == CHECKSUM_PARTIAL) { - BUG_ON(skb->protocol != htons(ETH_P_IP)); + return -EOPNOTSUPP; +} - cmd_sts |= ETH_GEN_TCP_UDP_CHECKSUM | - ETH_GEN_IP_V_4_CHECKSUM | - ip_hdr(skb)->ihl << ETH_TX_IHL_SHIFT; +static const struct ethtool_ops mv643xx_eth_ethtool_ops = { + .get_settings = mv643xx_eth_get_settings, + .set_settings = mv643xx_eth_set_settings, + .get_drvinfo = mv643xx_eth_get_drvinfo, + .nway_reset = mv643xx_eth_nway_reset, + .get_link = mv643xx_eth_get_link, + .set_sg = ethtool_op_set_sg, + .get_strings = mv643xx_eth_get_strings, + .get_ethtool_stats = mv643xx_eth_get_ethtool_stats, + .get_sset_count = mv643xx_eth_get_sset_count, +}; - switch (ip_hdr(skb)->protocol) { - case IPPROTO_UDP: - cmd_sts |= ETH_UDP_FRAME; - desc->l4i_chk = ntohs(sum16_as_be(udp_hdr(skb)->check)); - break; - case IPPROTO_TCP: - desc->l4i_chk = ntohs(sum16_as_be(tcp_hdr(skb)->check)); - break; - default: - BUG(); - } - } else { - /* Errata BTS #50, IHL must be 5 if no HW checksum */ - cmd_sts |= 5 << ETH_TX_IHL_SHIFT; - desc->l4i_chk = 0; - } +static const struct ethtool_ops mv643xx_eth_ethtool_ops_phyless = { + .get_settings = mv643xx_eth_get_settings_phyless, + .set_settings = mv643xx_eth_set_settings_phyless, + .get_drvinfo = mv643xx_eth_get_drvinfo, + .nway_reset = mv643xx_eth_nway_reset_phyless, + .get_link = mv643xx_eth_get_link_phyless, + .set_sg = ethtool_op_set_sg, + .get_strings = mv643xx_eth_get_strings, + .get_ethtool_stats = mv643xx_eth_get_ethtool_stats, + .get_sset_count = mv643xx_eth_get_sset_count, +}; - /* ensure all other descriptors are written before first cmd_sts */ - wmb(); - desc->cmd_sts = cmd_sts; - /* ensure all descriptors are written before poking hardware */ - wmb(); - mv643xx_eth_port_enable_tx(mp, ETH_TX_QUEUES_ENABLED); +/* address handling *********************************************************/ +static void uc_addr_get(struct mv643xx_eth_private *mp, unsigned char *addr) +{ + unsigned int mac_h; + unsigned int mac_l; + + mac_h = rdl(mp, MAC_ADDR_HIGH(mp->port_num)); + mac_l = rdl(mp, MAC_ADDR_LOW(mp->port_num)); - mp->tx_desc_count += nr_frags + 1; + addr[0] = (mac_h >> 24) & 0xff; + addr[1] = (mac_h >> 16) & 0xff; + addr[2] = (mac_h >> 8) & 0xff; + addr[3] = mac_h & 0xff; + addr[4] = (mac_l >> 8) & 0xff; + addr[5] = mac_l & 0xff; } -/** - * mv643xx_eth_start_xmit - queue an skb to the hardware for transmission - * - */ -static int mv643xx_eth_start_xmit(struct sk_buff *skb, struct net_device *dev) +static void init_mac_tables(struct mv643xx_eth_private *mp) { - struct mv643xx_private *mp = netdev_priv(dev); - struct net_device_stats *stats = &dev->stats; - unsigned long flags; - - BUG_ON(netif_queue_stopped(dev)); + int i; - if (has_tiny_unaligned_frags(skb) && __skb_linearize(skb)) { - stats->tx_dropped++; - printk(KERN_DEBUG "%s: failed to linearize tiny " - "unaligned fragment\n", dev->name); - return NETDEV_TX_BUSY; + for (i = 0; i < 0x100; i += 4) { + wrl(mp, SPECIAL_MCAST_TABLE(mp->port_num) + i, 0); + wrl(mp, OTHER_MCAST_TABLE(mp->port_num) + i, 0); } - spin_lock_irqsave(&mp->lock, flags); + for (i = 0; i < 0x10; i += 4) + wrl(mp, UNICAST_TABLE(mp->port_num) + i, 0); +} - if (mp->tx_ring_size - mp->tx_desc_count < MAX_DESCS_PER_SKB) { - printk(KERN_ERR "%s: transmit with queue full\n", dev->name); - netif_stop_queue(dev); - spin_unlock_irqrestore(&mp->lock, flags); - return NETDEV_TX_BUSY; - } +static void set_filter_table_entry(struct mv643xx_eth_private *mp, + int table, unsigned char entry) +{ + unsigned int table_reg; - eth_tx_submit_descs_for_skb(mp, skb); - stats->tx_bytes += skb->len; - stats->tx_packets++; - dev->trans_start = jiffies; + /* Set "accepts frame bit" at specified table entry */ + table_reg = rdl(mp, table + (entry & 0xfc)); + table_reg |= 0x01 << (8 * (entry & 3)); + wrl(mp, table + (entry & 0xfc), table_reg); +} - if (mp->tx_ring_size - mp->tx_desc_count < MAX_DESCS_PER_SKB) - netif_stop_queue(dev); +static void uc_addr_set(struct mv643xx_eth_private *mp, unsigned char *addr) +{ + unsigned int mac_h; + unsigned int mac_l; + int table; - spin_unlock_irqrestore(&mp->lock, flags); + mac_l = (addr[4] << 8) | addr[5]; + mac_h = (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3]; - return NETDEV_TX_OK; + wrl(mp, MAC_ADDR_LOW(mp->port_num), mac_l); + wrl(mp, MAC_ADDR_HIGH(mp->port_num), mac_h); + + table = UNICAST_TABLE(mp->port_num); + set_filter_table_entry(mp, table, addr[5] & 0x0f); } -#ifdef CONFIG_NET_POLL_CONTROLLER -static void mv643xx_netpoll(struct net_device *netdev) +static int mv643xx_eth_set_mac_address(struct net_device *dev, void *addr) { - struct mv643xx_private *mp = netdev_priv(netdev); - int port_num = mp->port_num; + struct mv643xx_eth_private *mp = netdev_priv(dev); - wrl(mp, INTERRUPT_MASK_REG(port_num), ETH_INT_MASK_ALL); - /* wait for previous write to complete */ - rdl(mp, INTERRUPT_MASK_REG(port_num)); + /* +2 is for the offset of the HW addr type */ + memcpy(dev->dev_addr, addr + 2, 6); - mv643xx_eth_int_handler(netdev->irq, netdev); + init_mac_tables(mp); + uc_addr_set(mp, dev->dev_addr); - wrl(mp, INTERRUPT_MASK_REG(port_num), ETH_INT_UNMASK_ALL); + return 0; } -#endif -static void mv643xx_init_ethtool_cmd(struct net_device *dev, int phy_address, - int speed, int duplex, - struct ethtool_cmd *cmd) +static int addr_crc(unsigned char *addr) { - struct mv643xx_private *mp = netdev_priv(dev); + int crc = 0; + int i; - memset(cmd, 0, sizeof(*cmd)); + for (i = 0; i < 6; i++) { + int j; - cmd->port = PORT_MII; - cmd->transceiver = XCVR_INTERNAL; - cmd->phy_address = phy_address; - - if (speed == 0) { - cmd->autoneg = AUTONEG_ENABLE; - /* mii lib checks, but doesn't use speed on AUTONEG_ENABLE */ - cmd->speed = SPEED_100; - cmd->advertising = ADVERTISED_10baseT_Half | - ADVERTISED_10baseT_Full | - ADVERTISED_100baseT_Half | - ADVERTISED_100baseT_Full; - if (mp->mii.supports_gmii) - cmd->advertising |= ADVERTISED_1000baseT_Full; - } else { - cmd->autoneg = AUTONEG_DISABLE; - cmd->speed = speed; - cmd->duplex = duplex; + crc = (crc ^ addr[i]) << 8; + for (j = 7; j >= 0; j--) { + if (crc & (0x100 << j)) + crc ^= 0x107 << j; + } } + + return crc; } -/*/ - * mv643xx_eth_probe - * - * First function called after registering the network device. - * It's purpose is to initialize the device as an ethernet device, - * fill the ethernet device structure with pointers * to functions, - * and set the MAC address of the interface - * - * Input : struct device * - * Output : -ENOMEM if failed , 0 if success - */ -static int mv643xx_eth_probe(struct platform_device *pdev) +static void mv643xx_eth_set_rx_mode(struct net_device *dev) { - struct mv643xx_eth_platform_data *pd; - int port_num; - struct mv643xx_private *mp; - struct net_device *dev; - u8 *p; - struct resource *res; - int err; - struct ethtool_cmd cmd; - int duplex = DUPLEX_HALF; - int speed = 0; /* default to auto-negotiation */ - DECLARE_MAC_BUF(mac); + struct mv643xx_eth_private *mp = netdev_priv(dev); + u32 port_config; + struct dev_addr_list *addr; + int i; - pd = pdev->dev.platform_data; - if (pd == NULL) { - printk(KERN_ERR "No mv643xx_eth_platform_data\n"); - return -ENODEV; + port_config = rdl(mp, PORT_CONFIG(mp->port_num)); + if (dev->flags & IFF_PROMISC) + port_config |= UNICAST_PROMISCUOUS_MODE; + else + port_config &= ~UNICAST_PROMISCUOUS_MODE; + wrl(mp, PORT_CONFIG(mp->port_num), port_config); + + if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) { + int port_num = mp->port_num; + u32 accept = 0x01010101; + + for (i = 0; i < 0x100; i += 4) { + wrl(mp, SPECIAL_MCAST_TABLE(port_num) + i, accept); + wrl(mp, OTHER_MCAST_TABLE(port_num) + i, accept); + } + return; } - if (pd->shared == NULL) { - printk(KERN_ERR "No mv643xx_eth_platform_data->shared\n"); - return -ENODEV; + for (i = 0; i < 0x100; i += 4) { + wrl(mp, SPECIAL_MCAST_TABLE(mp->port_num) + i, 0); + wrl(mp, OTHER_MCAST_TABLE(mp->port_num) + i, 0); } - dev = alloc_etherdev(sizeof(struct mv643xx_private)); - if (!dev) - return -ENOMEM; + for (addr = dev->mc_list; addr != NULL; addr = addr->next) { + u8 *a = addr->da_addr; + int table; - platform_set_drvdata(pdev, dev); + if (addr->da_addrlen != 6) + continue; - mp = netdev_priv(dev); - mp->dev = dev; -#ifdef MV643XX_NAPI - netif_napi_add(dev, &mp->napi, mv643xx_poll, 64); -#endif + if (memcmp(a, "\x01\x00\x5e\x00\x00", 5) == 0) { + table = SPECIAL_MCAST_TABLE(mp->port_num); + set_filter_table_entry(mp, table, a[5]); + } else { + int crc = addr_crc(a); - res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); - BUG_ON(!res); - dev->irq = res->start; + table = OTHER_MCAST_TABLE(mp->port_num); + set_filter_table_entry(mp, table, crc); + } + } +} - dev->open = mv643xx_eth_open; - dev->stop = mv643xx_eth_stop; - dev->hard_start_xmit = mv643xx_eth_start_xmit; - dev->set_mac_address = mv643xx_eth_set_mac_address; - dev->set_multicast_list = mv643xx_eth_set_rx_mode; - /* No need to Tx Timeout */ - dev->tx_timeout = mv643xx_eth_tx_timeout; +/* rx/tx queue initialisation ***********************************************/ +static int rxq_init(struct mv643xx_eth_private *mp, int index) +{ + struct rx_queue *rxq = mp->rxq + index; + struct rx_desc *rx_desc; + int size; + int i; -#ifdef CONFIG_NET_POLL_CONTROLLER - dev->poll_controller = mv643xx_netpoll; -#endif + rxq->index = index; - dev->watchdog_timeo = 2 * HZ; - dev->base_addr = 0; - dev->change_mtu = mv643xx_eth_change_mtu; - dev->do_ioctl = mv643xx_eth_do_ioctl; - SET_ETHTOOL_OPS(dev, &mv643xx_ethtool_ops); + rxq->rx_ring_size = mp->default_rx_ring_size; -#ifdef MV643XX_CHECKSUM_OFFLOAD_TX -#ifdef MAX_SKB_FRAGS - /* - * Zero copy can only work if we use Discovery II memory. Else, we will - * have to map the buffers to ISA memory which is only 16 MB - */ - dev->features = NETIF_F_SG | NETIF_F_IP_CSUM; -#endif -#endif + rxq->rx_desc_count = 0; + rxq->rx_curr_desc = 0; + rxq->rx_used_desc = 0; - /* Configure the timeout task */ - INIT_WORK(&mp->tx_timeout_task, mv643xx_eth_tx_timeout_task); + size = rxq->rx_ring_size * sizeof(struct rx_desc); - spin_lock_init(&mp->lock); + if (index == mp->rxq_primary && size <= mp->rx_desc_sram_size) { + rxq->rx_desc_area = ioremap(mp->rx_desc_sram_addr, + mp->rx_desc_sram_size); + rxq->rx_desc_dma = mp->rx_desc_sram_addr; + } else { + rxq->rx_desc_area = dma_alloc_coherent(NULL, size, + &rxq->rx_desc_dma, + GFP_KERNEL); + } - mp->shared = platform_get_drvdata(pd->shared); - port_num = mp->port_num = pd->port_number; + if (rxq->rx_desc_area == NULL) { + dev_printk(KERN_ERR, &mp->dev->dev, + "can't allocate rx ring (%d bytes)\n", size); + goto out; + } + memset(rxq->rx_desc_area, 0, size); - if (mp->shared->win_protect) - wrl(mp, WINDOW_PROTECT(port_num), mp->shared->win_protect); + rxq->rx_desc_area_size = size; + rxq->rx_skb = kmalloc(rxq->rx_ring_size * sizeof(*rxq->rx_skb), + GFP_KERNEL); + if (rxq->rx_skb == NULL) { + dev_printk(KERN_ERR, &mp->dev->dev, + "can't allocate rx skb ring\n"); + goto out_free; + } - mp->shared_smi = mp->shared; - if (pd->shared_smi != NULL) - mp->shared_smi = platform_get_drvdata(pd->shared_smi); + rx_desc = (struct rx_desc *)rxq->rx_desc_area; + for (i = 0; i < rxq->rx_ring_size; i++) { + int nexti = (i + 1) % rxq->rx_ring_size; + rx_desc[i].next_desc_ptr = rxq->rx_desc_dma + + nexti * sizeof(struct rx_desc); + } - /* set default config values */ - eth_port_uc_addr_get(mp, dev->dev_addr); - mp->rx_ring_size = PORT_DEFAULT_RECEIVE_QUEUE_SIZE; - mp->tx_ring_size = PORT_DEFAULT_TRANSMIT_QUEUE_SIZE; + init_timer(&rxq->rx_oom); + rxq->rx_oom.data = (unsigned long)rxq; + rxq->rx_oom.function = rxq_refill_timer_wrapper; - if (is_valid_ether_addr(pd->mac_addr)) - memcpy(dev->dev_addr, pd->mac_addr, 6); + return 0; - if (pd->phy_addr || pd->force_phy_addr) - ethernet_phy_set(mp, pd->phy_addr); - if (pd->rx_queue_size) - mp->rx_ring_size = pd->rx_queue_size; +out_free: + if (index == mp->rxq_primary && size <= mp->rx_desc_sram_size) + iounmap(rxq->rx_desc_area); + else + dma_free_coherent(NULL, size, + rxq->rx_desc_area, + rxq->rx_desc_dma); - if (pd->tx_queue_size) - mp->tx_ring_size = pd->tx_queue_size; +out: + return -ENOMEM; +} - if (pd->tx_sram_size) { - mp->tx_sram_size = pd->tx_sram_size; - mp->tx_sram_addr = pd->tx_sram_addr; - } +static void rxq_deinit(struct rx_queue *rxq) +{ + struct mv643xx_eth_private *mp = rxq_to_mp(rxq); + int i; - if (pd->rx_sram_size) { - mp->rx_sram_size = pd->rx_sram_size; - mp->rx_sram_addr = pd->rx_sram_addr; - } + rxq_disable(rxq); - duplex = pd->duplex; - speed = pd->speed; + del_timer_sync(&rxq->rx_oom); - /* Hook up MII support for ethtool */ - mp->mii.dev = dev; - mp->mii.mdio_read = mv643xx_mdio_read; - mp->mii.mdio_write = mv643xx_mdio_write; - mp->mii.phy_id = ethernet_phy_get(mp); - mp->mii.phy_id_mask = 0x3f; - mp->mii.reg_num_mask = 0x1f; + for (i = 0; i < rxq->rx_ring_size; i++) { + if (rxq->rx_skb[i]) { + dev_kfree_skb(rxq->rx_skb[i]); + rxq->rx_desc_count--; + } + } - err = ethernet_phy_detect(mp); - if (err) { - pr_debug("%s: No PHY detected at addr %d\n", - dev->name, ethernet_phy_get(mp)); - goto out; + if (rxq->rx_desc_count) { + dev_printk(KERN_ERR, &mp->dev->dev, + "error freeing rx ring -- %d skbs stuck\n", + rxq->rx_desc_count); } - ethernet_phy_reset(mp); - mp->mii.supports_gmii = mii_check_gmii_support(&mp->mii); - mv643xx_init_ethtool_cmd(dev, mp->mii.phy_id, speed, duplex, &cmd); - mv643xx_eth_update_pscr(dev, &cmd); - mv643xx_set_settings(dev, &cmd); + if (rxq->index == mp->rxq_primary && + rxq->rx_desc_area_size <= mp->rx_desc_sram_size) + iounmap(rxq->rx_desc_area); + else + dma_free_coherent(NULL, rxq->rx_desc_area_size, + rxq->rx_desc_area, rxq->rx_desc_dma); - SET_NETDEV_DEV(dev, &pdev->dev); - err = register_netdev(dev); - if (err) - goto out; + kfree(rxq->rx_skb); +} - p = dev->dev_addr; - printk(KERN_NOTICE - "%s: port %d with MAC address %s\n", - dev->name, port_num, print_mac(mac, p)); +static int txq_init(struct mv643xx_eth_private *mp, int index) +{ + struct tx_queue *txq = mp->txq + index; + struct tx_desc *tx_desc; + int size; + int i; - if (dev->features & NETIF_F_SG) - printk(KERN_NOTICE "%s: Scatter Gather Enabled\n", dev->name); + txq->index = index; - if (dev->features & NETIF_F_IP_CSUM) - printk(KERN_NOTICE "%s: TX TCP/IP Checksumming Supported\n", - dev->name); + txq->tx_ring_size = mp->default_tx_ring_size; -#ifdef MV643XX_CHECKSUM_OFFLOAD_TX - printk(KERN_NOTICE "%s: RX TCP/UDP Checksum Offload ON \n", dev->name); -#endif + txq->tx_desc_count = 0; + txq->tx_curr_desc = 0; + txq->tx_used_desc = 0; -#ifdef MV643XX_COAL - printk(KERN_NOTICE "%s: TX and RX Interrupt Coalescing ON \n", - dev->name); -#endif + size = txq->tx_ring_size * sizeof(struct tx_desc); -#ifdef MV643XX_NAPI - printk(KERN_NOTICE "%s: RX NAPI Enabled \n", dev->name); -#endif + if (index == mp->txq_primary && size <= mp->tx_desc_sram_size) { + txq->tx_desc_area = ioremap(mp->tx_desc_sram_addr, + mp->tx_desc_sram_size); + txq->tx_desc_dma = mp->tx_desc_sram_addr; + } else { + txq->tx_desc_area = dma_alloc_coherent(NULL, size, + &txq->tx_desc_dma, + GFP_KERNEL); + } + + if (txq->tx_desc_area == NULL) { + dev_printk(KERN_ERR, &mp->dev->dev, + "can't allocate tx ring (%d bytes)\n", size); + goto out; + } + memset(txq->tx_desc_area, 0, size); - if (mp->tx_sram_size > 0) - printk(KERN_NOTICE "%s: Using SRAM\n", dev->name); + txq->tx_desc_area_size = size; + txq->tx_skb = kmalloc(txq->tx_ring_size * sizeof(*txq->tx_skb), + GFP_KERNEL); + if (txq->tx_skb == NULL) { + dev_printk(KERN_ERR, &mp->dev->dev, + "can't allocate tx skb ring\n"); + goto out_free; + } + + tx_desc = (struct tx_desc *)txq->tx_desc_area; + for (i = 0; i < txq->tx_ring_size; i++) { + int nexti = (i + 1) % txq->tx_ring_size; + tx_desc[i].next_desc_ptr = txq->tx_desc_dma + + nexti * sizeof(struct tx_desc); + } return 0; -out: - free_netdev(dev); - return err; +out_free: + if (index == mp->txq_primary && size <= mp->tx_desc_sram_size) + iounmap(txq->tx_desc_area); + else + dma_free_coherent(NULL, size, + txq->tx_desc_area, + txq->tx_desc_dma); + +out: + return -ENOMEM; } -static int mv643xx_eth_remove(struct platform_device *pdev) +static void txq_reclaim(struct tx_queue *txq, int force) { - struct net_device *dev = platform_get_drvdata(pdev); + struct mv643xx_eth_private *mp = txq_to_mp(txq); + unsigned long flags; - unregister_netdev(dev); - flush_scheduled_work(); + spin_lock_irqsave(&mp->lock, flags); + while (txq->tx_desc_count > 0) { + int tx_index; + struct tx_desc *desc; + u32 cmd_sts; + struct sk_buff *skb; + dma_addr_t addr; + int count; + + tx_index = txq->tx_used_desc; + desc = &txq->tx_desc_area[tx_index]; + cmd_sts = desc->cmd_sts; - free_netdev(dev); - platform_set_drvdata(pdev, NULL); - return 0; -} + if (!force && (cmd_sts & BUFFER_OWNED_BY_DMA)) + break; -static void mv643xx_eth_conf_mbus_windows(struct mv643xx_shared_private *msp, - struct mbus_dram_target_info *dram) -{ - void __iomem *base = msp->eth_base; - u32 win_enable; - u32 win_protect; - int i; + txq->tx_used_desc = (tx_index + 1) % txq->tx_ring_size; + txq->tx_desc_count--; - for (i = 0; i < 6; i++) { - writel(0, base + WINDOW_BASE(i)); - writel(0, base + WINDOW_SIZE(i)); - if (i < 4) - writel(0, base + WINDOW_REMAP_HIGH(i)); - } + addr = desc->buf_ptr; + count = desc->byte_cnt; + skb = txq->tx_skb[tx_index]; + txq->tx_skb[tx_index] = NULL; - win_enable = 0x3f; - win_protect = 0; + if (cmd_sts & ERROR_SUMMARY) { + dev_printk(KERN_INFO, &mp->dev->dev, "tx error\n"); + mp->dev->stats.tx_errors++; + } - for (i = 0; i < dram->num_cs; i++) { - struct mbus_dram_window *cs = dram->cs + i; + /* + * Drop mp->lock while we free the skb. + */ + spin_unlock_irqrestore(&mp->lock, flags); - writel((cs->base & 0xffff0000) | - (cs->mbus_attr << 8) | - dram->mbus_dram_target_id, base + WINDOW_BASE(i)); - writel((cs->size - 1) & 0xffff0000, base + WINDOW_SIZE(i)); + if (cmd_sts & TX_FIRST_DESC) + dma_unmap_single(NULL, addr, count, DMA_TO_DEVICE); + else + dma_unmap_page(NULL, addr, count, DMA_TO_DEVICE); - win_enable &= ~(1 << i); - win_protect |= 3 << (2 * i); - } + if (skb) + dev_kfree_skb_irq(skb); - writel(win_enable, base + WINDOW_BAR_ENABLE); - msp->win_protect = win_protect; + spin_lock_irqsave(&mp->lock, flags); + } + spin_unlock_irqrestore(&mp->lock, flags); } -static int mv643xx_eth_shared_probe(struct platform_device *pdev) +static void txq_deinit(struct tx_queue *txq) { - static int mv643xx_version_printed = 0; - struct mv643xx_eth_shared_platform_data *pd = pdev->dev.platform_data; - struct mv643xx_shared_private *msp; - struct resource *res; - int ret; + struct mv643xx_eth_private *mp = txq_to_mp(txq); - if (!mv643xx_version_printed++) - printk(KERN_NOTICE "MV-643xx 10/100/1000 Ethernet Driver\n"); + txq_disable(txq); + txq_reclaim(txq, 1); - ret = -EINVAL; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (res == NULL) - goto out; + BUG_ON(txq->tx_used_desc != txq->tx_curr_desc); - ret = -ENOMEM; - msp = kmalloc(sizeof(*msp), GFP_KERNEL); - if (msp == NULL) - goto out; - memset(msp, 0, sizeof(*msp)); + if (txq->index == mp->txq_primary && + txq->tx_desc_area_size <= mp->tx_desc_sram_size) + iounmap(txq->tx_desc_area); + else + dma_free_coherent(NULL, txq->tx_desc_area_size, + txq->tx_desc_area, txq->tx_desc_dma); - msp->eth_base = ioremap(res->start, res->end - res->start + 1); - if (msp->eth_base == NULL) - goto out_free; + kfree(txq->tx_skb); +} - spin_lock_init(&msp->phy_lock); - msp->t_clk = (pd != NULL && pd->t_clk != 0) ? pd->t_clk : 133000000; - platform_set_drvdata(pdev, msp); +/* netdev ops and related ***************************************************/ +static void update_pscr(struct mv643xx_eth_private *mp, int speed, int duplex) +{ + u32 pscr_o; + u32 pscr_n; - /* - * (Re-)program MBUS remapping windows if we are asked to. - */ - if (pd != NULL && pd->dram != NULL) - mv643xx_eth_conf_mbus_windows(msp, pd->dram); + pscr_o = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num)); - return 0; + /* clear speed, duplex and rx buffer size fields */ + pscr_n = pscr_o & ~(SET_MII_SPEED_TO_100 | + SET_GMII_SPEED_TO_1000 | + SET_FULL_DUPLEX_MODE | + MAX_RX_PACKET_MASK); -out_free: - kfree(msp); -out: - return ret; -} + if (speed == SPEED_1000) { + pscr_n |= SET_GMII_SPEED_TO_1000 | MAX_RX_PACKET_9700BYTE; + } else { + if (speed == SPEED_100) + pscr_n |= SET_MII_SPEED_TO_100; + pscr_n |= MAX_RX_PACKET_1522BYTE; + } -static int mv643xx_eth_shared_remove(struct platform_device *pdev) -{ - struct mv643xx_shared_private *msp = platform_get_drvdata(pdev); + if (duplex == DUPLEX_FULL) + pscr_n |= SET_FULL_DUPLEX_MODE; - iounmap(msp->eth_base); - kfree(msp); + if (pscr_n != pscr_o) { + if ((pscr_o & SERIAL_PORT_ENABLE) == 0) + wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr_n); + else { + int i; - return 0; + for (i = 0; i < 8; i++) + if (mp->txq_mask & (1 << i)) + txq_disable(mp->txq + i); + + pscr_o &= ~SERIAL_PORT_ENABLE; + wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr_o); + wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr_n); + wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr_n); + + for (i = 0; i < 8; i++) + if (mp->txq_mask & (1 << i)) + txq_enable(mp->txq + i); + } + } } -static void mv643xx_eth_shutdown(struct platform_device *pdev) +static irqreturn_t mv643xx_eth_irq(int irq, void *dev_id) { - struct net_device *dev = platform_get_drvdata(pdev); - struct mv643xx_private *mp = netdev_priv(dev); - unsigned int port_num = mp->port_num; + struct net_device *dev = (struct net_device *)dev_id; + struct mv643xx_eth_private *mp = netdev_priv(dev); + u32 int_cause; + u32 int_cause_ext; + u32 txq_active; + + int_cause = rdl(mp, INT_CAUSE(mp->port_num)) & + (INT_TX_END | INT_RX | INT_EXT); + if (int_cause == 0) + return IRQ_NONE; - /* Mask all interrupts on ethernet port */ - wrl(mp, INTERRUPT_MASK_REG(port_num), 0); - rdl(mp, INTERRUPT_MASK_REG(port_num)); + int_cause_ext = 0; + if (int_cause & INT_EXT) { + int_cause_ext = rdl(mp, INT_CAUSE_EXT(mp->port_num)) + & (INT_EXT_LINK | INT_EXT_PHY | INT_EXT_TX); + wrl(mp, INT_CAUSE_EXT(mp->port_num), ~int_cause_ext); + } - eth_port_reset(mp); -} + if (int_cause_ext & (INT_EXT_PHY | INT_EXT_LINK)) { + if (mp->phy_addr == -1 || mii_link_ok(&mp->mii)) { + int i; -static struct platform_driver mv643xx_eth_driver = { - .probe = mv643xx_eth_probe, - .remove = mv643xx_eth_remove, - .shutdown = mv643xx_eth_shutdown, - .driver = { - .name = MV643XX_ETH_NAME, - .owner = THIS_MODULE, - }, -}; + if (mp->phy_addr != -1) { + struct ethtool_cmd cmd; -static struct platform_driver mv643xx_eth_shared_driver = { - .probe = mv643xx_eth_shared_probe, - .remove = mv643xx_eth_shared_remove, - .driver = { - .name = MV643XX_ETH_SHARED_NAME, - .owner = THIS_MODULE, - }, -}; + mii_ethtool_gset(&mp->mii, &cmd); + update_pscr(mp, cmd.speed, cmd.duplex); + } -/* - * mv643xx_init_module - * - * Registers the network drivers into the Linux kernel - * - * Input : N/A - * - * Output : N/A - */ -static int __init mv643xx_init_module(void) -{ - int rc; + for (i = 0; i < 8; i++) + if (mp->txq_mask & (1 << i)) + txq_enable(mp->txq + i); - rc = platform_driver_register(&mv643xx_eth_shared_driver); - if (!rc) { - rc = platform_driver_register(&mv643xx_eth_driver); - if (rc) - platform_driver_unregister(&mv643xx_eth_shared_driver); + if (!netif_carrier_ok(dev)) { + netif_carrier_on(dev); + __txq_maybe_wake(mp->txq + mp->txq_primary); + } + } else if (netif_carrier_ok(dev)) { + netif_stop_queue(dev); + netif_carrier_off(dev); + } } - return rc; -} -/* - * mv643xx_cleanup_module - * - * Registers the network drivers into the Linux kernel - * - * Input : N/A - * - * Output : N/A - */ -static void __exit mv643xx_cleanup_module(void) -{ - platform_driver_unregister(&mv643xx_eth_driver); - platform_driver_unregister(&mv643xx_eth_shared_driver); -} + /* + * RxBuffer or RxError set for any of the 8 queues? + */ +#ifdef MV643XX_ETH_NAPI + if (int_cause & INT_RX) { + wrl(mp, INT_MASK(mp->port_num), 0x00000000); + rdl(mp, INT_MASK(mp->port_num)); -module_init(mv643xx_init_module); -module_exit(mv643xx_cleanup_module); + netif_rx_schedule(dev, &mp->napi); + } +#else + if (int_cause & INT_RX) { + int i; -MODULE_LICENSE("GPL"); -MODULE_AUTHOR( "Rabeeh Khoury, Assaf Hoffman, Matthew Dharm, Manish Lachwani" - " and Dale Farnsworth"); -MODULE_DESCRIPTION("Ethernet driver for Marvell MV643XX"); -MODULE_ALIAS("platform:" MV643XX_ETH_NAME); -MODULE_ALIAS("platform:" MV643XX_ETH_SHARED_NAME); + for (i = 7; i >= 0; i--) + if (mp->rxq_mask & (1 << i)) + rxq_process(mp->rxq + i, INT_MAX); + } +#endif -/* - * The second part is the low level driver of the gigE ethernet ports. - */ + txq_active = rdl(mp, TXQ_COMMAND(mp->port_num)); -/* - * Marvell's Gigabit Ethernet controller low level driver - * - * DESCRIPTION: - * This file introduce low level API to Marvell's Gigabit Ethernet - * controller. This Gigabit Ethernet Controller driver API controls - * 1) Operations (i.e. port init, start, reset etc'). - * 2) Data flow (i.e. port send, receive etc'). - * Each Gigabit Ethernet port is controlled via - * struct mv643xx_private. - * This struct includes user configuration information as well as - * driver internal data needed for its operations. - * - * Supported Features: - * - This low level driver is OS independent. Allocating memory for - * the descriptor rings and buffers are not within the scope of - * this driver. - * - The user is free from Rx/Tx queue managing. - * - This low level driver introduce functionality API that enable - * the to operate Marvell's Gigabit Ethernet Controller in a - * convenient way. - * - Simple Gigabit Ethernet port operation API. - * - Simple Gigabit Ethernet port data flow API. - * - Data flow and operation API support per queue functionality. - * - Support cached descriptors for better performance. - * - Enable access to all four DRAM banks and internal SRAM memory - * spaces. - * - PHY access and control API. - * - Port control register configuration API. - * - Full control over Unicast and Multicast MAC configurations. - * - * Operation flow: - * - * Initialization phase - * This phase complete the initialization of the the - * mv643xx_private struct. - * User information regarding port configuration has to be set - * prior to calling the port initialization routine. - * - * In this phase any port Tx/Rx activity is halted, MIB counters - * are cleared, PHY address is set according to user parameter and - * access to DRAM and internal SRAM memory spaces. - * - * Driver ring initialization - * Allocating memory for the descriptor rings and buffers is not - * within the scope of this driver. Thus, the user is required to - * allocate memory for the descriptors ring and buffers. Those - * memory parameters are used by the Rx and Tx ring initialization - * routines in order to curve the descriptor linked list in a form - * of a ring. - * Note: Pay special attention to alignment issues when using - * cached descriptors/buffers. In this phase the driver store - * information in the mv643xx_private struct regarding each queue - * ring. - * - * Driver start - * This phase prepares the Ethernet port for Rx and Tx activity. - * It uses the information stored in the mv643xx_private struct to - * initialize the various port registers. - * - * Data flow: - * All packet references to/from the driver are done using - * struct pkt_info. - * This struct is a unified struct used with Rx and Tx operations. - * This way the user is not required to be familiar with neither - * Tx nor Rx descriptors structures. - * The driver's descriptors rings are management by indexes. - * Those indexes controls the ring resources and used to indicate - * a SW resource error: - * 'current' - * This index points to the current available resource for use. For - * example in Rx process this index will point to the descriptor - * that will be passed to the user upon calling the receive - * routine. In Tx process, this index will point to the descriptor - * that will be assigned with the user packet info and transmitted. - * 'used' - * This index points to the descriptor that need to restore its - * resources. For example in Rx process, using the Rx buffer return - * API will attach the buffer returned in packet info to the - * descriptor pointed by 'used'. In Tx process, using the Tx - * descriptor return will merely return the user packet info with - * the command status of the transmitted buffer pointed by the - * 'used' index. Nevertheless, it is essential to use this routine - * to update the 'used' index. - * 'first' - * This index supports Tx Scatter-Gather. It points to the first - * descriptor of a packet assembled of multiple buffers. For - * example when in middle of Such packet we have a Tx resource - * error the 'curr' index get the value of 'first' to indicate - * that the ring returned to its state before trying to transmit - * this packet. - * - * Receive operation: - * The eth_port_receive API set the packet information struct, - * passed by the caller, with received information from the - * 'current' SDMA descriptor. - * It is the user responsibility to return this resource back - * to the Rx descriptor ring to enable the reuse of this source. - * Return Rx resource is done using the eth_rx_return_buff API. - * - * Prior to calling the initialization routine eth_port_init() the user - * must set the following fields under mv643xx_private struct: - * port_num User Ethernet port number. - * port_config User port configuration value. - * port_config_extend User port config extend value. - * port_sdma_config User port SDMA config value. - * port_serial_control User port serial control value. - * - * This driver data flow is done using the struct pkt_info which - * is a unified struct for Rx and Tx operations: - * - * byte_cnt Tx/Rx descriptor buffer byte count. - * l4i_chk CPU provided TCP Checksum. For Tx operation - * only. - * cmd_sts Tx/Rx descriptor command status. - * buf_ptr Tx/Rx descriptor buffer pointer. - * return_info Tx/Rx user resource return information. - */ + /* + * TxBuffer or TxError set for any of the 8 queues? + */ + if (int_cause_ext & INT_EXT_TX) { + int i; -/* Ethernet Port routines */ -static void eth_port_set_filter_table_entry(struct mv643xx_private *mp, - int table, unsigned char entry); + for (i = 0; i < 8; i++) + if (mp->txq_mask & (1 << i)) + txq_reclaim(mp->txq + i, 0); + } -/* - * eth_port_init - Initialize the Ethernet port driver - * - * DESCRIPTION: - * This function prepares the ethernet port to start its activity: - * 1) Completes the ethernet port driver struct initialization toward port - * start routine. - * 2) Resets the device to a quiescent state in case of warm reboot. - * 3) Enable SDMA access to all four DRAM banks as well as internal SRAM. - * 4) Clean MAC tables. The reset status of those tables is unknown. - * 5) Set PHY address. - * Note: Call this routine prior to eth_port_start routine and after - * setting user values in the user fields of Ethernet port control - * struct. - * - * INPUT: - * struct mv643xx_private *mp Ethernet port control struct - * - * OUTPUT: - * See description. - * - * RETURN: - * None. - */ -static void eth_port_init(struct mv643xx_private *mp) -{ - mp->rx_resource_err = 0; + /* + * Any TxEnd interrupts? + */ + if (int_cause & INT_TX_END) { + int i; + + wrl(mp, INT_CAUSE(mp->port_num), ~(int_cause & INT_TX_END)); + for (i = 0; i < 8; i++) { + struct tx_queue *txq = mp->txq + i; + if (txq->tx_desc_count && !((txq_active >> i) & 1)) + txq_enable(txq); + } + } - eth_port_reset(mp); + /* + * Enough space again in the primary TX queue for a full packet? + */ + if (int_cause_ext & INT_EXT_TX) { + struct tx_queue *txq = mp->txq + mp->txq_primary; + __txq_maybe_wake(txq); + } - eth_port_init_mac_tables(mp); + return IRQ_HANDLED; } -/* - * eth_port_start - Start the Ethernet port activity. - * - * DESCRIPTION: - * This routine prepares the Ethernet port for Rx and Tx activity: - * 1. Initialize Tx and Rx Current Descriptor Pointer for each queue that - * has been initialized a descriptor's ring (using - * ether_init_tx_desc_ring for Tx and ether_init_rx_desc_ring for Rx) - * 2. Initialize and enable the Ethernet configuration port by writing to - * the port's configuration and command registers. - * 3. Initialize and enable the SDMA by writing to the SDMA's - * configuration and command registers. After completing these steps, - * the ethernet port SDMA can starts to perform Rx and Tx activities. - * - * Note: Each Rx and Tx queue descriptor's list must be initialized prior - * to calling this function (use ether_init_tx_desc_ring for Tx queues - * and ether_init_rx_desc_ring for Rx queues). - * - * INPUT: - * dev - a pointer to the required interface - * - * OUTPUT: - * Ethernet port is ready to receive and transmit. - * - * RETURN: - * None. - */ -static void eth_port_start(struct net_device *dev) +static void phy_reset(struct mv643xx_eth_private *mp) { - struct mv643xx_private *mp = netdev_priv(dev); - unsigned int port_num = mp->port_num; - int tx_curr_desc, rx_curr_desc; - u32 pscr; - struct ethtool_cmd ethtool_cmd; - - /* Assignment of Tx CTRP of given queue */ - tx_curr_desc = mp->tx_curr_desc_q; - wrl(mp, TX_CURRENT_QUEUE_DESC_PTR_0(port_num), - (u32)((struct eth_tx_desc *)mp->tx_desc_dma + tx_curr_desc)); - - /* Assignment of Rx CRDP of given queue */ - rx_curr_desc = mp->rx_curr_desc_q; - wrl(mp, RX_CURRENT_QUEUE_DESC_PTR_0(port_num), - (u32)((struct eth_rx_desc *)mp->rx_desc_dma + rx_curr_desc)); + unsigned int data; - /* Add the assigned Ethernet address to the port's address table */ - eth_port_uc_addr_set(mp, dev->dev_addr); + smi_reg_read(mp, mp->phy_addr, 0, &data); + data |= 0x8000; + smi_reg_write(mp, mp->phy_addr, 0, data); - /* Assign port configuration and command. */ - wrl(mp, PORT_CONFIG_REG(port_num), - PORT_CONFIG_DEFAULT_VALUE); - - wrl(mp, PORT_CONFIG_EXTEND_REG(port_num), - PORT_CONFIG_EXTEND_DEFAULT_VALUE); + do { + udelay(1); + smi_reg_read(mp, mp->phy_addr, 0, &data); + } while (data & 0x8000); +} - pscr = rdl(mp, PORT_SERIAL_CONTROL_REG(port_num)); +static void port_start(struct mv643xx_eth_private *mp) +{ + u32 pscr; + int i; + /* + * Configure basic link parameters. + */ + pscr = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num)); pscr &= ~(SERIAL_PORT_ENABLE | FORCE_LINK_PASS); - wrl(mp, PORT_SERIAL_CONTROL_REG(port_num), pscr); - + wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr); pscr |= DISABLE_AUTO_NEG_FOR_FLOW_CTRL | DISABLE_AUTO_NEG_SPEED_GMII | - DISABLE_AUTO_NEG_FOR_DUPLX | - DO_NOT_FORCE_LINK_FAIL | + DISABLE_AUTO_NEG_FOR_DUPLEX | + DO_NOT_FORCE_LINK_FAIL | SERIAL_PORT_CONTROL_RESERVED; + wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr); + pscr |= SERIAL_PORT_ENABLE; + wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr); - wrl(mp, PORT_SERIAL_CONTROL_REG(port_num), pscr); + wrl(mp, SDMA_CONFIG(mp->port_num), PORT_SDMA_CONFIG_DEFAULT_VALUE); - pscr |= SERIAL_PORT_ENABLE; - wrl(mp, PORT_SERIAL_CONTROL_REG(port_num), pscr); + /* + * Perform PHY reset, if there is a PHY. + */ + if (mp->phy_addr != -1) { + struct ethtool_cmd cmd; - /* Assign port SDMA configuration */ - wrl(mp, SDMA_CONFIG_REG(port_num), - PORT_SDMA_CONFIG_DEFAULT_VALUE); + mv643xx_eth_get_settings(mp->dev, &cmd); + phy_reset(mp); + mv643xx_eth_set_settings(mp->dev, &cmd); + } - /* Enable port Rx. */ - mv643xx_eth_port_enable_rx(mp, ETH_RX_QUEUES_ENABLED); + /* + * Configure TX path and queues. + */ + tx_set_rate(mp, 1000000000, 16777216); + for (i = 0; i < 8; i++) { + struct tx_queue *txq = mp->txq + i; + int off = TXQ_CURRENT_DESC_PTR(mp->port_num, i); + u32 addr; - /* Disable port bandwidth limits by clearing MTU register */ - wrl(mp, MAXIMUM_TRANSMIT_UNIT(port_num), 0); + if ((mp->txq_mask & (1 << i)) == 0) + continue; - /* save phy settings across reset */ - mv643xx_get_settings(dev, ðtool_cmd); - ethernet_phy_reset(mp); - mv643xx_set_settings(dev, ðtool_cmd); -} + addr = (u32)txq->tx_desc_dma; + addr += txq->tx_curr_desc * sizeof(struct tx_desc); + wrl(mp, off, addr); -/* - * eth_port_uc_addr_set - Write a MAC address into the port's hw registers - */ -static void eth_port_uc_addr_set(struct mv643xx_private *mp, - unsigned char *p_addr) -{ - unsigned int port_num = mp->port_num; - unsigned int mac_h; - unsigned int mac_l; - int table; + txq_set_rate(txq, 1000000000, 16777216); + txq_set_fixed_prio_mode(txq); + } - mac_l = (p_addr[4] << 8) | (p_addr[5]); - mac_h = (p_addr[0] << 24) | (p_addr[1] << 16) | (p_addr[2] << 8) | - (p_addr[3] << 0); + /* + * Add configured unicast address to address filter table. + */ + uc_addr_set(mp, mp->dev->dev_addr); - wrl(mp, MAC_ADDR_LOW(port_num), mac_l); - wrl(mp, MAC_ADDR_HIGH(port_num), mac_h); + /* + * Receive all unmatched unicast, TCP, UDP, BPDU and broadcast + * frames to RX queue #0. + */ + wrl(mp, PORT_CONFIG(mp->port_num), 0x00000000); - /* Accept frames with this address */ - table = DA_FILTER_UNICAST_TABLE_BASE(port_num); - eth_port_set_filter_table_entry(mp, table, p_addr[5] & 0x0f); -} + /* + * Treat BPDUs as normal multicasts, and disable partition mode. + */ + wrl(mp, PORT_CONFIG_EXT(mp->port_num), 0x00000000); -/* - * eth_port_uc_addr_get - Read the MAC address from the port's hw registers - */ -static void eth_port_uc_addr_get(struct mv643xx_private *mp, - unsigned char *p_addr) -{ - unsigned int port_num = mp->port_num; - unsigned int mac_h; - unsigned int mac_l; + /* + * Enable the receive queues. + */ + for (i = 0; i < 8; i++) { + struct rx_queue *rxq = mp->rxq + i; + int off = RXQ_CURRENT_DESC_PTR(mp->port_num, i); + u32 addr; + + if ((mp->rxq_mask & (1 << i)) == 0) + continue; - mac_h = rdl(mp, MAC_ADDR_HIGH(port_num)); - mac_l = rdl(mp, MAC_ADDR_LOW(port_num)); + addr = (u32)rxq->rx_desc_dma; + addr += rxq->rx_curr_desc * sizeof(struct rx_desc); + wrl(mp, off, addr); - p_addr[0] = (mac_h >> 24) & 0xff; - p_addr[1] = (mac_h >> 16) & 0xff; - p_addr[2] = (mac_h >> 8) & 0xff; - p_addr[3] = mac_h & 0xff; - p_addr[4] = (mac_l >> 8) & 0xff; - p_addr[5] = mac_l & 0xff; + rxq_enable(rxq); + } } -/* - * The entries in each table are indexed by a hash of a packet's MAC - * address. One bit in each entry determines whether the packet is - * accepted. There are 4 entries (each 8 bits wide) in each register - * of the table. The bits in each entry are defined as follows: - * 0 Accept=1, Drop=0 - * 3-1 Queue (ETH_Q0=0) - * 7-4 Reserved = 0; - */ -static void eth_port_set_filter_table_entry(struct mv643xx_private *mp, - int table, unsigned char entry) +static void set_rx_coal(struct mv643xx_eth_private *mp, unsigned int delay) { - unsigned int table_reg; - unsigned int tbl_offset; - unsigned int reg_offset; + unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64; + u32 val; + + val = rdl(mp, SDMA_CONFIG(mp->port_num)); + if (mp->shared->extended_rx_coal_limit) { + if (coal > 0xffff) + coal = 0xffff; + val &= ~0x023fff80; + val |= (coal & 0x8000) << 10; + val |= (coal & 0x7fff) << 7; + } else { + if (coal > 0x3fff) + coal = 0x3fff; + val &= ~0x003fff00; + val |= (coal & 0x3fff) << 8; + } + wrl(mp, SDMA_CONFIG(mp->port_num), val); +} - tbl_offset = (entry / 4) * 4; /* Register offset of DA table entry */ - reg_offset = entry % 4; /* Entry offset within the register */ +static void set_tx_coal(struct mv643xx_eth_private *mp, unsigned int delay) +{ + unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64; - /* Set "accepts frame bit" at specified table entry */ - table_reg = rdl(mp, table + tbl_offset); - table_reg |= 0x01 << (8 * reg_offset); - wrl(mp, table + tbl_offset, table_reg); + if (coal > 0x3fff) + coal = 0x3fff; + wrl(mp, TX_FIFO_URGENT_THRESHOLD(mp->port_num), (coal & 0x3fff) << 4); } -/* - * eth_port_mc_addr - Multicast address settings. - * - * The MV device supports multicast using two tables: - * 1) Special Multicast Table for MAC addresses of the form - * 0x01-00-5E-00-00-XX (where XX is between 0x00 and 0x_FF). - * The MAC DA[7:0] bits are used as a pointer to the Special Multicast - * Table entries in the DA-Filter table. - * 2) Other Multicast Table for multicast of another type. A CRC-8bit - * is used as an index to the Other Multicast Table entries in the - * DA-Filter table. This function calculates the CRC-8bit value. - * In either case, eth_port_set_filter_table_entry() is then called - * to set to set the actual table entry. - */ -static void eth_port_mc_addr(struct mv643xx_private *mp, unsigned char *p_addr) +static int mv643xx_eth_open(struct net_device *dev) { - unsigned int port_num = mp->port_num; - unsigned int mac_h; - unsigned int mac_l; - unsigned char crc_result = 0; - int table; - int mac_array[48]; - int crc[8]; + struct mv643xx_eth_private *mp = netdev_priv(dev); + int err; int i; - if ((p_addr[0] == 0x01) && (p_addr[1] == 0x00) && - (p_addr[2] == 0x5E) && (p_addr[3] == 0x00) && (p_addr[4] == 0x00)) { - table = DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE(port_num); - eth_port_set_filter_table_entry(mp, table, p_addr[5]); - return; + wrl(mp, INT_CAUSE(mp->port_num), 0); + wrl(mp, INT_CAUSE_EXT(mp->port_num), 0); + rdl(mp, INT_CAUSE_EXT(mp->port_num)); + + err = request_irq(dev->irq, mv643xx_eth_irq, + IRQF_SHARED | IRQF_SAMPLE_RANDOM, + dev->name, dev); + if (err) { + dev_printk(KERN_ERR, &dev->dev, "can't assign irq\n"); + return -EAGAIN; } - /* Calculate CRC-8 out of the given address */ - mac_h = (p_addr[0] << 8) | (p_addr[1]); - mac_l = (p_addr[2] << 24) | (p_addr[3] << 16) | - (p_addr[4] << 8) | (p_addr[5] << 0); - - for (i = 0; i < 32; i++) - mac_array[i] = (mac_l >> i) & 0x1; - for (i = 32; i < 48; i++) - mac_array[i] = (mac_h >> (i - 32)) & 0x1; - - crc[0] = mac_array[45] ^ mac_array[43] ^ mac_array[40] ^ mac_array[39] ^ - mac_array[35] ^ mac_array[34] ^ mac_array[31] ^ mac_array[30] ^ - mac_array[28] ^ mac_array[23] ^ mac_array[21] ^ mac_array[19] ^ - mac_array[18] ^ mac_array[16] ^ mac_array[14] ^ mac_array[12] ^ - mac_array[8] ^ mac_array[7] ^ mac_array[6] ^ mac_array[0]; - - crc[1] = mac_array[46] ^ mac_array[45] ^ mac_array[44] ^ mac_array[43] ^ - mac_array[41] ^ mac_array[39] ^ mac_array[36] ^ mac_array[34] ^ - mac_array[32] ^ mac_array[30] ^ mac_array[29] ^ mac_array[28] ^ - mac_array[24] ^ mac_array[23] ^ mac_array[22] ^ mac_array[21] ^ - mac_array[20] ^ mac_array[18] ^ mac_array[17] ^ mac_array[16] ^ - mac_array[15] ^ mac_array[14] ^ mac_array[13] ^ mac_array[12] ^ - mac_array[9] ^ mac_array[6] ^ mac_array[1] ^ mac_array[0]; - - crc[2] = mac_array[47] ^ mac_array[46] ^ mac_array[44] ^ mac_array[43] ^ - mac_array[42] ^ mac_array[39] ^ mac_array[37] ^ mac_array[34] ^ - mac_array[33] ^ mac_array[29] ^ mac_array[28] ^ mac_array[25] ^ - mac_array[24] ^ mac_array[22] ^ mac_array[17] ^ mac_array[15] ^ - mac_array[13] ^ mac_array[12] ^ mac_array[10] ^ mac_array[8] ^ - mac_array[6] ^ mac_array[2] ^ mac_array[1] ^ mac_array[0]; - - crc[3] = mac_array[47] ^ mac_array[45] ^ mac_array[44] ^ mac_array[43] ^ - mac_array[40] ^ mac_array[38] ^ mac_array[35] ^ mac_array[34] ^ - mac_array[30] ^ mac_array[29] ^ mac_array[26] ^ mac_array[25] ^ - mac_array[23] ^ mac_array[18] ^ mac_array[16] ^ mac_array[14] ^ - mac_array[13] ^ mac_array[11] ^ mac_array[9] ^ mac_array[7] ^ - mac_array[3] ^ mac_array[2] ^ mac_array[1]; - - crc[4] = mac_array[46] ^ mac_array[45] ^ mac_array[44] ^ mac_array[41] ^ - mac_array[39] ^ mac_array[36] ^ mac_array[35] ^ mac_array[31] ^ - mac_array[30] ^ mac_array[27] ^ mac_array[26] ^ mac_array[24] ^ - mac_array[19] ^ mac_array[17] ^ mac_array[15] ^ mac_array[14] ^ - mac_array[12] ^ mac_array[10] ^ mac_array[8] ^ mac_array[4] ^ - mac_array[3] ^ mac_array[2]; - - crc[5] = mac_array[47] ^ mac_array[46] ^ mac_array[45] ^ mac_array[42] ^ - mac_array[40] ^ mac_array[37] ^ mac_array[36] ^ mac_array[32] ^ - mac_array[31] ^ mac_array[28] ^ mac_array[27] ^ mac_array[25] ^ - mac_array[20] ^ mac_array[18] ^ mac_array[16] ^ mac_array[15] ^ - mac_array[13] ^ mac_array[11] ^ mac_array[9] ^ mac_array[5] ^ - mac_array[4] ^ mac_array[3]; - - crc[6] = mac_array[47] ^ mac_array[46] ^ mac_array[43] ^ mac_array[41] ^ - mac_array[38] ^ mac_array[37] ^ mac_array[33] ^ mac_array[32] ^ - mac_array[29] ^ mac_array[28] ^ mac_array[26] ^ mac_array[21] ^ - mac_array[19] ^ mac_array[17] ^ mac_array[16] ^ mac_array[14] ^ - mac_array[12] ^ mac_array[10] ^ mac_array[6] ^ mac_array[5] ^ - mac_array[4]; - - crc[7] = mac_array[47] ^ mac_array[44] ^ mac_array[42] ^ mac_array[39] ^ - mac_array[38] ^ mac_array[34] ^ mac_array[33] ^ mac_array[30] ^ - mac_array[29] ^ mac_array[27] ^ mac_array[22] ^ mac_array[20] ^ - mac_array[18] ^ mac_array[17] ^ mac_array[15] ^ mac_array[13] ^ - mac_array[11] ^ mac_array[7] ^ mac_array[6] ^ mac_array[5]; + init_mac_tables(mp); - for (i = 0; i < 8; i++) - crc_result = crc_result | (crc[i] << i); + for (i = 0; i < 8; i++) { + if ((mp->rxq_mask & (1 << i)) == 0) + continue; - table = DA_FILTER_OTHER_MULTICAST_TABLE_BASE(port_num); - eth_port_set_filter_table_entry(mp, table, crc_result); -} + err = rxq_init(mp, i); + if (err) { + while (--i >= 0) + if (mp->rxq_mask & (1 << i)) + rxq_deinit(mp->rxq + i); + goto out; + } -/* - * Set the entire multicast list based on dev->mc_list. - */ -static void eth_port_set_multicast_list(struct net_device *dev) -{ + rxq_refill(mp->rxq + i); + } - struct dev_mc_list *mc_list; - int i; - int table_index; - struct mv643xx_private *mp = netdev_priv(dev); - unsigned int eth_port_num = mp->port_num; + for (i = 0; i < 8; i++) { + if ((mp->txq_mask & (1 << i)) == 0) + continue; - /* If the device is in promiscuous mode or in all multicast mode, - * we will fully populate both multicast tables with accept. - * This is guaranteed to yield a match on all multicast addresses... - */ - if ((dev->flags & IFF_PROMISC) || (dev->flags & IFF_ALLMULTI)) { - for (table_index = 0; table_index <= 0xFC; table_index += 4) { - /* Set all entries in DA filter special multicast - * table (Ex_dFSMT) - * Set for ETH_Q0 for now - * Bits - * 0 Accept=1, Drop=0 - * 3-1 Queue ETH_Q0=0 - * 7-4 Reserved = 0; - */ - wrl(mp, DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE(eth_port_num) + table_index, 0x01010101); - - /* Set all entries in DA filter other multicast - * table (Ex_dFOMT) - * Set for ETH_Q0 for now - * Bits - * 0 Accept=1, Drop=0 - * 3-1 Queue ETH_Q0=0 - * 7-4 Reserved = 0; - */ - wrl(mp, DA_FILTER_OTHER_MULTICAST_TABLE_BASE(eth_port_num) + table_index, 0x01010101); + err = txq_init(mp, i); + if (err) { + while (--i >= 0) + if (mp->txq_mask & (1 << i)) + txq_deinit(mp->txq + i); + goto out_free; } - return; } - /* We will clear out multicast tables every time we get the list. - * Then add the entire new list... - */ - for (table_index = 0; table_index <= 0xFC; table_index += 4) { - /* Clear DA filter special multicast table (Ex_dFSMT) */ - wrl(mp, DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE - (eth_port_num) + table_index, 0); - - /* Clear DA filter other multicast table (Ex_dFOMT) */ - wrl(mp, DA_FILTER_OTHER_MULTICAST_TABLE_BASE - (eth_port_num) + table_index, 0); - } +#ifdef MV643XX_ETH_NAPI + napi_enable(&mp->napi); +#endif + + port_start(mp); - /* Get pointer to net_device multicast list and add each one... */ - for (i = 0, mc_list = dev->mc_list; - (i < 256) && (mc_list != NULL) && (i < dev->mc_count); - i++, mc_list = mc_list->next) - if (mc_list->dmi_addrlen == 6) - eth_port_mc_addr(mp, mc_list->dmi_addr); + set_rx_coal(mp, 0); + set_tx_coal(mp, 0); + + wrl(mp, INT_MASK_EXT(mp->port_num), + INT_EXT_LINK | INT_EXT_PHY | INT_EXT_TX); + + wrl(mp, INT_MASK(mp->port_num), INT_TX_END | INT_RX | INT_EXT); + + return 0; + + +out_free: + for (i = 0; i < 8; i++) + if (mp->rxq_mask & (1 << i)) + rxq_deinit(mp->rxq + i); +out: + free_irq(dev->irq, dev); + + return err; } -/* - * eth_port_init_mac_tables - Clear all entrance in the UC, SMC and OMC tables - * - * DESCRIPTION: - * Go through all the DA filter tables (Unicast, Special Multicast & - * Other Multicast) and set each entry to 0. - * - * INPUT: - * struct mv643xx_private *mp Ethernet Port. - * - * OUTPUT: - * Multicast and Unicast packets are rejected. - * - * RETURN: - * None. - */ -static void eth_port_init_mac_tables(struct mv643xx_private *mp) -{ - unsigned int port_num = mp->port_num; - int table_index; - - /* Clear DA filter unicast table (Ex_dFUT) */ - for (table_index = 0; table_index <= 0xC; table_index += 4) - wrl(mp, DA_FILTER_UNICAST_TABLE_BASE(port_num) + - table_index, 0); - - for (table_index = 0; table_index <= 0xFC; table_index += 4) { - /* Clear DA filter special multicast table (Ex_dFSMT) */ - wrl(mp, DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE(port_num) + - table_index, 0); - /* Clear DA filter other multicast table (Ex_dFOMT) */ - wrl(mp, DA_FILTER_OTHER_MULTICAST_TABLE_BASE(port_num) + - table_index, 0); +static void port_reset(struct mv643xx_eth_private *mp) +{ + unsigned int data; + int i; + + for (i = 0; i < 8; i++) { + if (mp->rxq_mask & (1 << i)) + rxq_disable(mp->rxq + i); + if (mp->txq_mask & (1 << i)) + txq_disable(mp->txq + i); } + while (!(rdl(mp, PORT_STATUS(mp->port_num)) & TX_FIFO_EMPTY)) + udelay(10); + + /* Reset the Enable bit in the Configuration Register */ + data = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num)); + data &= ~(SERIAL_PORT_ENABLE | + DO_NOT_FORCE_LINK_FAIL | + FORCE_LINK_PASS); + wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), data); } -/* - * eth_clear_mib_counters - Clear all MIB counters - * - * DESCRIPTION: - * This function clears all MIB counters of a specific ethernet port. - * A read from the MIB counter will reset the counter. - * - * INPUT: - * struct mv643xx_private *mp Ethernet Port. - * - * OUTPUT: - * After reading all MIB counters, the counters resets. - * - * RETURN: - * MIB counter value. - * - */ -static void eth_clear_mib_counters(struct mv643xx_private *mp) +static int mv643xx_eth_stop(struct net_device *dev) { - unsigned int port_num = mp->port_num; + struct mv643xx_eth_private *mp = netdev_priv(dev); int i; - /* Perform dummy reads from MIB counters */ - for (i = ETH_MIB_GOOD_OCTETS_RECEIVED_LOW; i < ETH_MIB_LATE_COLLISION; - i += 4) - rdl(mp, MIB_COUNTERS_BASE(port_num) + i); + wrl(mp, INT_MASK(mp->port_num), 0x00000000); + rdl(mp, INT_MASK(mp->port_num)); + +#ifdef MV643XX_ETH_NAPI + napi_disable(&mp->napi); +#endif + netif_carrier_off(dev); + netif_stop_queue(dev); + + free_irq(dev->irq, dev); + + port_reset(mp); + mib_counters_update(mp); + + for (i = 0; i < 8; i++) { + if (mp->rxq_mask & (1 << i)) + rxq_deinit(mp->rxq + i); + if (mp->txq_mask & (1 << i)) + txq_deinit(mp->txq + i); + } + + return 0; } -static inline u32 read_mib(struct mv643xx_private *mp, int offset) +static int mv643xx_eth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) { - return rdl(mp, MIB_COUNTERS_BASE(mp->port_num) + offset); + struct mv643xx_eth_private *mp = netdev_priv(dev); + + if (mp->phy_addr != -1) + return generic_mii_ioctl(&mp->mii, if_mii(ifr), cmd, NULL); + + return -EOPNOTSUPP; } -static void eth_update_mib_counters(struct mv643xx_private *mp) +static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu) { - struct mv643xx_mib_counters *p = &mp->mib_counters; - int offset; + struct mv643xx_eth_private *mp = netdev_priv(dev); - p->good_octets_received += - read_mib(mp, ETH_MIB_GOOD_OCTETS_RECEIVED_LOW); - p->good_octets_received += - (u64)read_mib(mp, ETH_MIB_GOOD_OCTETS_RECEIVED_HIGH) << 32; + if (new_mtu < 64 || new_mtu > 9500) + return -EINVAL; - for (offset = ETH_MIB_BAD_OCTETS_RECEIVED; - offset <= ETH_MIB_FRAMES_1024_TO_MAX_OCTETS; - offset += 4) - *(u32 *)((char *)p + offset) += read_mib(mp, offset); + dev->mtu = new_mtu; + tx_set_rate(mp, 1000000000, 16777216); - p->good_octets_sent += read_mib(mp, ETH_MIB_GOOD_OCTETS_SENT_LOW); - p->good_octets_sent += - (u64)read_mib(mp, ETH_MIB_GOOD_OCTETS_SENT_HIGH) << 32; + if (!netif_running(dev)) + return 0; - for (offset = ETH_MIB_GOOD_FRAMES_SENT; - offset <= ETH_MIB_LATE_COLLISION; - offset += 4) - *(u32 *)((char *)p + offset) += read_mib(mp, offset); + /* + * Stop and then re-open the interface. This will allocate RX + * skbs of the new MTU. + * There is a possible danger that the open will not succeed, + * due to memory being full. + */ + mv643xx_eth_stop(dev); + if (mv643xx_eth_open(dev)) { + dev_printk(KERN_ERR, &dev->dev, + "fatal error on re-opening device after " + "MTU change\n"); + } + + return 0; } -/* - * ethernet_phy_detect - Detect whether a phy is present - * - * DESCRIPTION: - * This function tests whether there is a PHY present on - * the specified port. - * - * INPUT: - * struct mv643xx_private *mp Ethernet Port. - * - * OUTPUT: - * None - * - * RETURN: - * 0 on success - * -ENODEV on failure - * - */ -static int ethernet_phy_detect(struct mv643xx_private *mp) +static void tx_timeout_task(struct work_struct *ugly) { - unsigned int phy_reg_data0; - int auto_neg; + struct mv643xx_eth_private *mp; - eth_port_read_smi_reg(mp, 0, &phy_reg_data0); - auto_neg = phy_reg_data0 & 0x1000; - phy_reg_data0 ^= 0x1000; /* invert auto_neg */ - eth_port_write_smi_reg(mp, 0, phy_reg_data0); + mp = container_of(ugly, struct mv643xx_eth_private, tx_timeout_task); + if (netif_running(mp->dev)) { + netif_stop_queue(mp->dev); - eth_port_read_smi_reg(mp, 0, &phy_reg_data0); - if ((phy_reg_data0 & 0x1000) == auto_neg) - return -ENODEV; /* change didn't take */ + port_reset(mp); + port_start(mp); - phy_reg_data0 ^= 0x1000; - eth_port_write_smi_reg(mp, 0, phy_reg_data0); - return 0; + __txq_maybe_wake(mp->txq + mp->txq_primary); + } } -/* - * ethernet_phy_get - Get the ethernet port PHY address. - * - * DESCRIPTION: - * This routine returns the given ethernet port PHY address. - * - * INPUT: - * struct mv643xx_private *mp Ethernet Port. - * - * OUTPUT: - * None. - * - * RETURN: - * PHY address. - * - */ -static int ethernet_phy_get(struct mv643xx_private *mp) +static void mv643xx_eth_tx_timeout(struct net_device *dev) { - unsigned int reg_data; + struct mv643xx_eth_private *mp = netdev_priv(dev); - reg_data = rdl(mp, PHY_ADDR_REG); + dev_printk(KERN_INFO, &dev->dev, "tx timeout\n"); - return ((reg_data >> (5 * mp->port_num)) & 0x1f); + schedule_work(&mp->tx_timeout_task); } -/* - * ethernet_phy_set - Set the ethernet port PHY address. - * - * DESCRIPTION: - * This routine sets the given ethernet port PHY address. - * - * INPUT: - * struct mv643xx_private *mp Ethernet Port. - * int phy_addr PHY address. - * - * OUTPUT: - * None. - * - * RETURN: - * None. - * - */ -static void ethernet_phy_set(struct mv643xx_private *mp, int phy_addr) +#ifdef CONFIG_NET_POLL_CONTROLLER +static void mv643xx_eth_netpoll(struct net_device *dev) { - u32 reg_data; - int addr_shift = 5 * mp->port_num; + struct mv643xx_eth_private *mp = netdev_priv(dev); + + wrl(mp, INT_MASK(mp->port_num), 0x00000000); + rdl(mp, INT_MASK(mp->port_num)); + + mv643xx_eth_irq(dev->irq, dev); - reg_data = rdl(mp, PHY_ADDR_REG); - reg_data &= ~(0x1f << addr_shift); - reg_data |= (phy_addr & 0x1f) << addr_shift; - wrl(mp, PHY_ADDR_REG, reg_data); + wrl(mp, INT_MASK(mp->port_num), INT_TX_END | INT_RX | INT_EXT); } +#endif -/* - * ethernet_phy_reset - Reset Ethernet port PHY. - * - * DESCRIPTION: - * This routine utilizes the SMI interface to reset the ethernet port PHY. - * - * INPUT: - * struct mv643xx_private *mp Ethernet Port. - * - * OUTPUT: - * The PHY is reset. - * - * RETURN: - * None. - * - */ -static void ethernet_phy_reset(struct mv643xx_private *mp) +static int mv643xx_eth_mdio_read(struct net_device *dev, int addr, int reg) { - unsigned int phy_reg_data; + struct mv643xx_eth_private *mp = netdev_priv(dev); + int val; - /* Reset the PHY */ - eth_port_read_smi_reg(mp, 0, &phy_reg_data); - phy_reg_data |= 0x8000; /* Set bit 15 to reset the PHY */ - eth_port_write_smi_reg(mp, 0, phy_reg_data); + smi_reg_read(mp, addr, reg, &val); - /* wait for PHY to come out of reset */ - do { - udelay(1); - eth_port_read_smi_reg(mp, 0, &phy_reg_data); - } while (phy_reg_data & 0x8000); + return val; } -static void mv643xx_eth_port_enable_tx(struct mv643xx_private *mp, - unsigned int queues) +static void mv643xx_eth_mdio_write(struct net_device *dev, int addr, int reg, int val) { - wrl(mp, TRANSMIT_QUEUE_COMMAND_REG(mp->port_num), queues); + struct mv643xx_eth_private *mp = netdev_priv(dev); + smi_reg_write(mp, addr, reg, val); } -static void mv643xx_eth_port_enable_rx(struct mv643xx_private *mp, - unsigned int queues) -{ - wrl(mp, RECEIVE_QUEUE_COMMAND_REG(mp->port_num), queues); -} -static unsigned int mv643xx_eth_port_disable_tx(struct mv643xx_private *mp) +/* platform glue ************************************************************/ +static void +mv643xx_eth_conf_mbus_windows(struct mv643xx_eth_shared_private *msp, + struct mbus_dram_target_info *dram) { - unsigned int port_num = mp->port_num; - u32 queues; + void __iomem *base = msp->base; + u32 win_enable; + u32 win_protect; + int i; - /* Stop Tx port activity. Check port Tx activity. */ - queues = rdl(mp, TRANSMIT_QUEUE_COMMAND_REG(port_num)) & 0xFF; - if (queues) { - /* Issue stop command for active queues only */ - wrl(mp, TRANSMIT_QUEUE_COMMAND_REG(port_num), (queues << 8)); + for (i = 0; i < 6; i++) { + writel(0, base + WINDOW_BASE(i)); + writel(0, base + WINDOW_SIZE(i)); + if (i < 4) + writel(0, base + WINDOW_REMAP_HIGH(i)); + } - /* Wait for all Tx activity to terminate. */ - /* Check port cause register that all Tx queues are stopped */ - while (rdl(mp, TRANSMIT_QUEUE_COMMAND_REG(port_num)) & 0xFF) - udelay(PHY_WAIT_MICRO_SECONDS); + win_enable = 0x3f; + win_protect = 0; - /* Wait for Tx FIFO to empty */ - while (rdl(mp, PORT_STATUS_REG(port_num)) & - ETH_PORT_TX_FIFO_EMPTY) - udelay(PHY_WAIT_MICRO_SECONDS); + for (i = 0; i < dram->num_cs; i++) { + struct mbus_dram_window *cs = dram->cs + i; + + writel((cs->base & 0xffff0000) | + (cs->mbus_attr << 8) | + dram->mbus_dram_target_id, base + WINDOW_BASE(i)); + writel((cs->size - 1) & 0xffff0000, base + WINDOW_SIZE(i)); + + win_enable &= ~(1 << i); + win_protect |= 3 << (2 * i); } - return queues; + writel(win_enable, base + WINDOW_BAR_ENABLE); + msp->win_protect = win_protect; } -static unsigned int mv643xx_eth_port_disable_rx(struct mv643xx_private *mp) +static void infer_hw_params(struct mv643xx_eth_shared_private *msp) { - unsigned int port_num = mp->port_num; - u32 queues; - - /* Stop Rx port activity. Check port Rx activity. */ - queues = rdl(mp, RECEIVE_QUEUE_COMMAND_REG(port_num)) & 0xFF; - if (queues) { - /* Issue stop command for active queues only */ - wrl(mp, RECEIVE_QUEUE_COMMAND_REG(port_num), (queues << 8)); - - /* Wait for all Rx activity to terminate. */ - /* Check port cause register that all Rx queues are stopped */ - while (rdl(mp, RECEIVE_QUEUE_COMMAND_REG(port_num)) & 0xFF) - udelay(PHY_WAIT_MICRO_SECONDS); - } + /* + * Check whether we have a 14-bit coal limit field in bits + * [21:8], or a 16-bit coal limit in bits [25,21:7] of the + * SDMA config register. + */ + writel(0x02000000, msp->base + SDMA_CONFIG(0)); + if (readl(msp->base + SDMA_CONFIG(0)) & 0x02000000) + msp->extended_rx_coal_limit = 1; + else + msp->extended_rx_coal_limit = 0; - return queues; + /* + * Check whether the TX rate control registers are in the + * old or the new place. + */ + writel(1, msp->base + TX_BW_MTU_MOVED(0)); + if (readl(msp->base + TX_BW_MTU_MOVED(0)) & 1) + msp->tx_bw_control_moved = 1; + else + msp->tx_bw_control_moved = 0; } -/* - * eth_port_reset - Reset Ethernet port - * - * DESCRIPTION: - * This routine resets the chip by aborting any SDMA engine activity and - * clearing the MIB counters. The Receiver and the Transmit unit are in - * idle state after this command is performed and the port is disabled. - * - * INPUT: - * struct mv643xx_private *mp Ethernet Port. - * - * OUTPUT: - * Channel activity is halted. - * - * RETURN: - * None. - * - */ -static void eth_port_reset(struct mv643xx_private *mp) +static int mv643xx_eth_shared_probe(struct platform_device *pdev) { - unsigned int port_num = mp->port_num; - unsigned int reg_data; + static int mv643xx_eth_version_printed = 0; + struct mv643xx_eth_shared_platform_data *pd = pdev->dev.platform_data; + struct mv643xx_eth_shared_private *msp; + struct resource *res; + int ret; - mv643xx_eth_port_disable_tx(mp); - mv643xx_eth_port_disable_rx(mp); + if (!mv643xx_eth_version_printed++) + printk(KERN_NOTICE "MV-643xx 10/100/1000 Ethernet Driver\n"); - /* Clear all MIB counters */ - eth_clear_mib_counters(mp); + ret = -EINVAL; + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (res == NULL) + goto out; - /* Reset the Enable bit in the Configuration Register */ - reg_data = rdl(mp, PORT_SERIAL_CONTROL_REG(port_num)); - reg_data &= ~(SERIAL_PORT_ENABLE | - DO_NOT_FORCE_LINK_FAIL | - FORCE_LINK_PASS); - wrl(mp, PORT_SERIAL_CONTROL_REG(port_num), reg_data); -} + ret = -ENOMEM; + msp = kmalloc(sizeof(*msp), GFP_KERNEL); + if (msp == NULL) + goto out; + memset(msp, 0, sizeof(*msp)); + msp->base = ioremap(res->start, res->end - res->start + 1); + if (msp->base == NULL) + goto out_free; -/* - * eth_port_read_smi_reg - Read PHY registers - * - * DESCRIPTION: - * This routine utilize the SMI interface to interact with the PHY in - * order to perform PHY register read. - * - * INPUT: - * struct mv643xx_private *mp Ethernet Port. - * unsigned int phy_reg PHY register address offset. - * unsigned int *value Register value buffer. - * - * OUTPUT: - * Write the value of a specified PHY register into given buffer. - * - * RETURN: - * false if the PHY is busy or read data is not in valid state. - * true otherwise. - * - */ -static void eth_port_read_smi_reg(struct mv643xx_private *mp, - unsigned int phy_reg, unsigned int *value) -{ - void __iomem *smi_reg = mp->shared_smi->eth_base + SMI_REG; - int phy_addr = ethernet_phy_get(mp); - unsigned long flags; - int i; + spin_lock_init(&msp->phy_lock); - /* the SMI register is a shared resource */ - spin_lock_irqsave(&mp->shared_smi->phy_lock, flags); + /* + * (Re-)program MBUS remapping windows if we are asked to. + */ + if (pd != NULL && pd->dram != NULL) + mv643xx_eth_conf_mbus_windows(msp, pd->dram); - /* wait for the SMI register to become available */ - for (i = 0; readl(smi_reg) & ETH_SMI_BUSY; i++) { - if (i == PHY_WAIT_ITERATIONS) { - printk("%s: PHY busy timeout\n", mp->dev->name); - goto out; - } - udelay(PHY_WAIT_MICRO_SECONDS); - } + /* + * Detect hardware parameters. + */ + msp->t_clk = (pd != NULL && pd->t_clk != 0) ? pd->t_clk : 133000000; + infer_hw_params(msp); - writel((phy_addr << 16) | (phy_reg << 21) | ETH_SMI_OPCODE_READ, - smi_reg); + platform_set_drvdata(pdev, msp); - /* now wait for the data to be valid */ - for (i = 0; !(readl(smi_reg) & ETH_SMI_READ_VALID); i++) { - if (i == PHY_WAIT_ITERATIONS) { - printk("%s: PHY read timeout\n", mp->dev->name); - goto out; - } - udelay(PHY_WAIT_MICRO_SECONDS); - } + return 0; - *value = readl(smi_reg) & 0xffff; +out_free: + kfree(msp); out: - spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags); + return ret; } -/* - * eth_port_write_smi_reg - Write to PHY registers - * - * DESCRIPTION: - * This routine utilize the SMI interface to interact with the PHY in - * order to perform writes to PHY registers. - * - * INPUT: - * struct mv643xx_private *mp Ethernet Port. - * unsigned int phy_reg PHY register address offset. - * unsigned int value Register value. - * - * OUTPUT: - * Write the given value to the specified PHY register. - * - * RETURN: - * false if the PHY is busy. - * true otherwise. - * - */ -static void eth_port_write_smi_reg(struct mv643xx_private *mp, - unsigned int phy_reg, unsigned int value) +static int mv643xx_eth_shared_remove(struct platform_device *pdev) { - void __iomem *smi_reg = mp->shared_smi->eth_base + SMI_REG; - int phy_addr = ethernet_phy_get(mp); - unsigned long flags; - int i; - - /* the SMI register is a shared resource */ - spin_lock_irqsave(&mp->shared_smi->phy_lock, flags); + struct mv643xx_eth_shared_private *msp = platform_get_drvdata(pdev); - /* wait for the SMI register to become available */ - for (i = 0; readl(smi_reg) & ETH_SMI_BUSY; i++) { - if (i == PHY_WAIT_ITERATIONS) { - printk("%s: PHY busy timeout\n", mp->dev->name); - goto out; - } - udelay(PHY_WAIT_MICRO_SECONDS); - } + iounmap(msp->base); + kfree(msp); - writel((phy_addr << 16) | (phy_reg << 21) | - ETH_SMI_OPCODE_WRITE | (value & 0xffff), smi_reg); -out: - spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags); + return 0; } -/* - * Wrappers for MII support library. - */ -static int mv643xx_mdio_read(struct net_device *dev, int phy_id, int location) +static struct platform_driver mv643xx_eth_shared_driver = { + .probe = mv643xx_eth_shared_probe, + .remove = mv643xx_eth_shared_remove, + .driver = { + .name = MV643XX_ETH_SHARED_NAME, + .owner = THIS_MODULE, + }, +}; + +static void phy_addr_set(struct mv643xx_eth_private *mp, int phy_addr) { - struct mv643xx_private *mp = netdev_priv(dev); - int val; + int addr_shift = 5 * mp->port_num; + u32 data; - eth_port_read_smi_reg(mp, location, &val); - return val; + data = rdl(mp, PHY_ADDR); + data &= ~(0x1f << addr_shift); + data |= (phy_addr & 0x1f) << addr_shift; + wrl(mp, PHY_ADDR, data); } -static void mv643xx_mdio_write(struct net_device *dev, int phy_id, int location, int val) +static int phy_addr_get(struct mv643xx_eth_private *mp) { - struct mv643xx_private *mp = netdev_priv(dev); - eth_port_write_smi_reg(mp, location, val); + unsigned int data; + + data = rdl(mp, PHY_ADDR); + + return (data >> (5 * mp->port_num)) & 0x1f; } -/* - * eth_port_receive - Get received information from Rx ring. - * - * DESCRIPTION: - * This routine returns the received data to the caller. There is no - * data copying during routine operation. All information is returned - * using pointer to packet information struct passed from the caller. - * If the routine exhausts Rx ring resources then the resource error flag - * is set. - * - * INPUT: - * struct mv643xx_private *mp Ethernet Port Control srtuct. - * struct pkt_info *p_pkt_info User packet buffer. - * - * OUTPUT: - * Rx ring current and used indexes are updated. - * - * RETURN: - * ETH_ERROR in case the routine can not access Rx desc ring. - * ETH_QUEUE_FULL if Rx ring resources are exhausted. - * ETH_END_OF_JOB if there is no received data. - * ETH_OK otherwise. - */ -static ETH_FUNC_RET_STATUS eth_port_receive(struct mv643xx_private *mp, - struct pkt_info *p_pkt_info) +static void set_params(struct mv643xx_eth_private *mp, + struct mv643xx_eth_platform_data *pd) { - int rx_next_curr_desc, rx_curr_desc, rx_used_desc; - volatile struct eth_rx_desc *p_rx_desc; - unsigned int command_status; - unsigned long flags; + struct net_device *dev = mp->dev; - /* Do not process Rx ring in case of Rx ring resource error */ - if (mp->rx_resource_err) - return ETH_QUEUE_FULL; + if (is_valid_ether_addr(pd->mac_addr)) + memcpy(dev->dev_addr, pd->mac_addr, 6); + else + uc_addr_get(mp, dev->dev_addr); - spin_lock_irqsave(&mp->lock, flags); + if (pd->phy_addr == -1) { + mp->shared_smi = NULL; + mp->phy_addr = -1; + } else { + mp->shared_smi = mp->shared; + if (pd->shared_smi != NULL) + mp->shared_smi = platform_get_drvdata(pd->shared_smi); - /* Get the Rx Desc ring 'curr and 'used' indexes */ - rx_curr_desc = mp->rx_curr_desc_q; - rx_used_desc = mp->rx_used_desc_q; + if (pd->force_phy_addr || pd->phy_addr) { + mp->phy_addr = pd->phy_addr & 0x3f; + phy_addr_set(mp, mp->phy_addr); + } else { + mp->phy_addr = phy_addr_get(mp); + } + } - p_rx_desc = &mp->p_rx_desc_area[rx_curr_desc]; + mp->default_rx_ring_size = DEFAULT_RX_QUEUE_SIZE; + if (pd->rx_queue_size) + mp->default_rx_ring_size = pd->rx_queue_size; + mp->rx_desc_sram_addr = pd->rx_sram_addr; + mp->rx_desc_sram_size = pd->rx_sram_size; - /* The following parameters are used to save readings from memory */ - command_status = p_rx_desc->cmd_sts; - rmb(); + if (pd->rx_queue_mask) + mp->rxq_mask = pd->rx_queue_mask; + else + mp->rxq_mask = 0x01; + mp->rxq_primary = fls(mp->rxq_mask) - 1; - /* Nothing to receive... */ - if (command_status & (ETH_BUFFER_OWNED_BY_DMA)) { - spin_unlock_irqrestore(&mp->lock, flags); - return ETH_END_OF_JOB; - } + mp->default_tx_ring_size = DEFAULT_TX_QUEUE_SIZE; + if (pd->tx_queue_size) + mp->default_tx_ring_size = pd->tx_queue_size; + mp->tx_desc_sram_addr = pd->tx_sram_addr; + mp->tx_desc_sram_size = pd->tx_sram_size; - p_pkt_info->byte_cnt = (p_rx_desc->byte_cnt) - RX_BUF_OFFSET; - p_pkt_info->cmd_sts = command_status; - p_pkt_info->buf_ptr = (p_rx_desc->buf_ptr) + RX_BUF_OFFSET; - p_pkt_info->return_info = mp->rx_skb[rx_curr_desc]; - p_pkt_info->l4i_chk = p_rx_desc->buf_size; + if (pd->tx_queue_mask) + mp->txq_mask = pd->tx_queue_mask; + else + mp->txq_mask = 0x01; + mp->txq_primary = fls(mp->txq_mask) - 1; +} - /* - * Clean the return info field to indicate that the - * packet has been moved to the upper layers - */ - mp->rx_skb[rx_curr_desc] = NULL; +static int phy_detect(struct mv643xx_eth_private *mp) +{ + unsigned int data; + unsigned int data2; - /* Update current index in data structure */ - rx_next_curr_desc = (rx_curr_desc + 1) % mp->rx_ring_size; - mp->rx_curr_desc_q = rx_next_curr_desc; + smi_reg_read(mp, mp->phy_addr, 0, &data); + smi_reg_write(mp, mp->phy_addr, 0, data ^ 0x1000); - /* Rx descriptors exhausted. Set the Rx ring resource error flag */ - if (rx_next_curr_desc == rx_used_desc) - mp->rx_resource_err = 1; + smi_reg_read(mp, mp->phy_addr, 0, &data2); + if (((data ^ data2) & 0x1000) == 0) + return -ENODEV; - spin_unlock_irqrestore(&mp->lock, flags); + smi_reg_write(mp, mp->phy_addr, 0, data); - return ETH_OK; + return 0; } -/* - * eth_rx_return_buff - Returns a Rx buffer back to the Rx ring. - * - * DESCRIPTION: - * This routine returns a Rx buffer back to the Rx ring. It retrieves the - * next 'used' descriptor and attached the returned buffer to it. - * In case the Rx ring was in "resource error" condition, where there are - * no available Rx resources, the function resets the resource error flag. - * - * INPUT: - * struct mv643xx_private *mp Ethernet Port Control srtuct. - * struct pkt_info *p_pkt_info Information on returned buffer. - * - * OUTPUT: - * New available Rx resource in Rx descriptor ring. - * - * RETURN: - * ETH_ERROR in case the routine can not access Rx desc ring. - * ETH_OK otherwise. - */ -static ETH_FUNC_RET_STATUS eth_rx_return_buff(struct mv643xx_private *mp, - struct pkt_info *p_pkt_info) +static int phy_init(struct mv643xx_eth_private *mp, + struct mv643xx_eth_platform_data *pd) { - int used_rx_desc; /* Where to return Rx resource */ - volatile struct eth_rx_desc *p_used_rx_desc; - unsigned long flags; + struct ethtool_cmd cmd; + int err; - spin_lock_irqsave(&mp->lock, flags); + err = phy_detect(mp); + if (err) { + dev_printk(KERN_INFO, &mp->dev->dev, + "no PHY detected at addr %d\n", mp->phy_addr); + return err; + } + phy_reset(mp); - /* Get 'used' Rx descriptor */ - used_rx_desc = mp->rx_used_desc_q; - p_used_rx_desc = &mp->p_rx_desc_area[used_rx_desc]; + mp->mii.phy_id = mp->phy_addr; + mp->mii.phy_id_mask = 0x3f; + mp->mii.reg_num_mask = 0x1f; + mp->mii.dev = mp->dev; + mp->mii.mdio_read = mv643xx_eth_mdio_read; + mp->mii.mdio_write = mv643xx_eth_mdio_write; - p_used_rx_desc->buf_ptr = p_pkt_info->buf_ptr; - p_used_rx_desc->buf_size = p_pkt_info->byte_cnt; - mp->rx_skb[used_rx_desc] = p_pkt_info->return_info; + mp->mii.supports_gmii = mii_check_gmii_support(&mp->mii); - /* Flush the write pipe */ + memset(&cmd, 0, sizeof(cmd)); + + cmd.port = PORT_MII; + cmd.transceiver = XCVR_INTERNAL; + cmd.phy_address = mp->phy_addr; + if (pd->speed == 0) { + cmd.autoneg = AUTONEG_ENABLE; + cmd.speed = SPEED_100; + cmd.advertising = ADVERTISED_10baseT_Half | + ADVERTISED_10baseT_Full | + ADVERTISED_100baseT_Half | + ADVERTISED_100baseT_Full; + if (mp->mii.supports_gmii) + cmd.advertising |= ADVERTISED_1000baseT_Full; + } else { + cmd.autoneg = AUTONEG_DISABLE; + cmd.speed = pd->speed; + cmd.duplex = pd->duplex; + } - /* Return the descriptor to DMA ownership */ - wmb(); - p_used_rx_desc->cmd_sts = - ETH_BUFFER_OWNED_BY_DMA | ETH_RX_ENABLE_INTERRUPT; - wmb(); + update_pscr(mp, cmd.speed, cmd.duplex); + mv643xx_eth_set_settings(mp->dev, &cmd); - /* Move the used descriptor pointer to the next descriptor */ - mp->rx_used_desc_q = (used_rx_desc + 1) % mp->rx_ring_size; + return 0; +} - /* Any Rx return cancels the Rx resource error status */ - mp->rx_resource_err = 0; +static int mv643xx_eth_probe(struct platform_device *pdev) +{ + struct mv643xx_eth_platform_data *pd; + struct mv643xx_eth_private *mp; + struct net_device *dev; + struct resource *res; + DECLARE_MAC_BUF(mac); + int err; - spin_unlock_irqrestore(&mp->lock, flags); + pd = pdev->dev.platform_data; + if (pd == NULL) { + dev_printk(KERN_ERR, &pdev->dev, + "no mv643xx_eth_platform_data\n"); + return -ENODEV; + } - return ETH_OK; -} + if (pd->shared == NULL) { + dev_printk(KERN_ERR, &pdev->dev, + "no mv643xx_eth_platform_data->shared\n"); + return -ENODEV; + } -/************* Begin ethtool support *************************/ + dev = alloc_etherdev(sizeof(struct mv643xx_eth_private)); + if (!dev) + return -ENOMEM; -struct mv643xx_stats { - char stat_string[ETH_GSTRING_LEN]; - int sizeof_stat; - int stat_offset; -}; + mp = netdev_priv(dev); + platform_set_drvdata(pdev, mp); -#define MV643XX_STAT(m) FIELD_SIZEOF(struct mv643xx_private, m), \ - offsetof(struct mv643xx_private, m) - -static const struct mv643xx_stats mv643xx_gstrings_stats[] = { - { "rx_packets", MV643XX_STAT(stats.rx_packets) }, - { "tx_packets", MV643XX_STAT(stats.tx_packets) }, - { "rx_bytes", MV643XX_STAT(stats.rx_bytes) }, - { "tx_bytes", MV643XX_STAT(stats.tx_bytes) }, - { "rx_errors", MV643XX_STAT(stats.rx_errors) }, - { "tx_errors", MV643XX_STAT(stats.tx_errors) }, - { "rx_dropped", MV643XX_STAT(stats.rx_dropped) }, - { "tx_dropped", MV643XX_STAT(stats.tx_dropped) }, - { "good_octets_received", MV643XX_STAT(mib_counters.good_octets_received) }, - { "bad_octets_received", MV643XX_STAT(mib_counters.bad_octets_received) }, - { "internal_mac_transmit_err", MV643XX_STAT(mib_counters.internal_mac_transmit_err) }, - { "good_frames_received", MV643XX_STAT(mib_counters.good_frames_received) }, - { "bad_frames_received", MV643XX_STAT(mib_counters.bad_frames_received) }, - { "broadcast_frames_received", MV643XX_STAT(mib_counters.broadcast_frames_received) }, - { "multicast_frames_received", MV643XX_STAT(mib_counters.multicast_frames_received) }, - { "frames_64_octets", MV643XX_STAT(mib_counters.frames_64_octets) }, - { "frames_65_to_127_octets", MV643XX_STAT(mib_counters.frames_65_to_127_octets) }, - { "frames_128_to_255_octets", MV643XX_STAT(mib_counters.frames_128_to_255_octets) }, - { "frames_256_to_511_octets", MV643XX_STAT(mib_counters.frames_256_to_511_octets) }, - { "frames_512_to_1023_octets", MV643XX_STAT(mib_counters.frames_512_to_1023_octets) }, - { "frames_1024_to_max_octets", MV643XX_STAT(mib_counters.frames_1024_to_max_octets) }, - { "good_octets_sent", MV643XX_STAT(mib_counters.good_octets_sent) }, - { "good_frames_sent", MV643XX_STAT(mib_counters.good_frames_sent) }, - { "excessive_collision", MV643XX_STAT(mib_counters.excessive_collision) }, - { "multicast_frames_sent", MV643XX_STAT(mib_counters.multicast_frames_sent) }, - { "broadcast_frames_sent", MV643XX_STAT(mib_counters.broadcast_frames_sent) }, - { "unrec_mac_control_received", MV643XX_STAT(mib_counters.unrec_mac_control_received) }, - { "fc_sent", MV643XX_STAT(mib_counters.fc_sent) }, - { "good_fc_received", MV643XX_STAT(mib_counters.good_fc_received) }, - { "bad_fc_received", MV643XX_STAT(mib_counters.bad_fc_received) }, - { "undersize_received", MV643XX_STAT(mib_counters.undersize_received) }, - { "fragments_received", MV643XX_STAT(mib_counters.fragments_received) }, - { "oversize_received", MV643XX_STAT(mib_counters.oversize_received) }, - { "jabber_received", MV643XX_STAT(mib_counters.jabber_received) }, - { "mac_receive_error", MV643XX_STAT(mib_counters.mac_receive_error) }, - { "bad_crc_event", MV643XX_STAT(mib_counters.bad_crc_event) }, - { "collision", MV643XX_STAT(mib_counters.collision) }, - { "late_collision", MV643XX_STAT(mib_counters.late_collision) }, -}; + mp->shared = platform_get_drvdata(pd->shared); + mp->port_num = pd->port_number; -#define MV643XX_STATS_LEN ARRAY_SIZE(mv643xx_gstrings_stats) + mp->dev = dev; +#ifdef MV643XX_ETH_NAPI + netif_napi_add(dev, &mp->napi, mv643xx_eth_poll, 64); +#endif -static void mv643xx_get_drvinfo(struct net_device *netdev, - struct ethtool_drvinfo *drvinfo) -{ - strncpy(drvinfo->driver, mv643xx_driver_name, 32); - strncpy(drvinfo->version, mv643xx_driver_version, 32); - strncpy(drvinfo->fw_version, "N/A", 32); - strncpy(drvinfo->bus_info, "mv643xx", 32); - drvinfo->n_stats = MV643XX_STATS_LEN; -} + set_params(mp, pd); -static int mv643xx_get_sset_count(struct net_device *netdev, int sset) -{ - switch (sset) { - case ETH_SS_STATS: - return MV643XX_STATS_LEN; - default: - return -EOPNOTSUPP; - } -} + spin_lock_init(&mp->lock); -static void mv643xx_get_ethtool_stats(struct net_device *netdev, - struct ethtool_stats *stats, uint64_t *data) -{ - struct mv643xx_private *mp = netdev->priv; - int i; + mib_counters_clear(mp); + INIT_WORK(&mp->tx_timeout_task, tx_timeout_task); - eth_update_mib_counters(mp); + if (mp->phy_addr != -1) { + err = phy_init(mp, pd); + if (err) + goto out; - for (i = 0; i < MV643XX_STATS_LEN; i++) { - char *p = (char *)mp+mv643xx_gstrings_stats[i].stat_offset; - data[i] = (mv643xx_gstrings_stats[i].sizeof_stat == - sizeof(uint64_t)) ? *(uint64_t *)p : *(uint32_t *)p; + SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops); + } else { + SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops_phyless); } -} -static void mv643xx_get_strings(struct net_device *netdev, uint32_t stringset, - uint8_t *data) -{ - int i; - switch(stringset) { - case ETH_SS_STATS: - for (i=0; i < MV643XX_STATS_LEN; i++) { - memcpy(data + i * ETH_GSTRING_LEN, - mv643xx_gstrings_stats[i].stat_string, - ETH_GSTRING_LEN); - } - break; - } + res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + BUG_ON(!res); + dev->irq = res->start; + + dev->hard_start_xmit = mv643xx_eth_xmit; + dev->open = mv643xx_eth_open; + dev->stop = mv643xx_eth_stop; + dev->set_multicast_list = mv643xx_eth_set_rx_mode; + dev->set_mac_address = mv643xx_eth_set_mac_address; + dev->do_ioctl = mv643xx_eth_ioctl; + dev->change_mtu = mv643xx_eth_change_mtu; + dev->tx_timeout = mv643xx_eth_tx_timeout; +#ifdef CONFIG_NET_POLL_CONTROLLER + dev->poll_controller = mv643xx_eth_netpoll; +#endif + dev->watchdog_timeo = 2 * HZ; + dev->base_addr = 0; + +#ifdef MV643XX_ETH_CHECKSUM_OFFLOAD_TX + /* + * Zero copy can only work if we use Discovery II memory. Else, we will + * have to map the buffers to ISA memory which is only 16 MB + */ + dev->features = NETIF_F_SG | NETIF_F_IP_CSUM; +#endif + + SET_NETDEV_DEV(dev, &pdev->dev); + + if (mp->shared->win_protect) + wrl(mp, WINDOW_PROTECT(mp->port_num), mp->shared->win_protect); + + err = register_netdev(dev); + if (err) + goto out; + + dev_printk(KERN_NOTICE, &dev->dev, "port %d with MAC address %s\n", + mp->port_num, print_mac(mac, dev->dev_addr)); + + if (dev->features & NETIF_F_SG) + dev_printk(KERN_NOTICE, &dev->dev, "scatter/gather enabled\n"); + + if (dev->features & NETIF_F_IP_CSUM) + dev_printk(KERN_NOTICE, &dev->dev, "tx checksum offload\n"); + +#ifdef MV643XX_ETH_NAPI + dev_printk(KERN_NOTICE, &dev->dev, "napi enabled\n"); +#endif + + if (mp->tx_desc_sram_size > 0) + dev_printk(KERN_NOTICE, &dev->dev, "configured with sram\n"); + + return 0; + +out: + free_netdev(dev); + + return err; } -static u32 mv643xx_eth_get_link(struct net_device *dev) +static int mv643xx_eth_remove(struct platform_device *pdev) { - struct mv643xx_private *mp = netdev_priv(dev); + struct mv643xx_eth_private *mp = platform_get_drvdata(pdev); - return mii_link_ok(&mp->mii); + unregister_netdev(mp->dev); + flush_scheduled_work(); + free_netdev(mp->dev); + + platform_set_drvdata(pdev, NULL); + + return 0; } -static int mv643xx_eth_nway_restart(struct net_device *dev) +static void mv643xx_eth_shutdown(struct platform_device *pdev) { - struct mv643xx_private *mp = netdev_priv(dev); + struct mv643xx_eth_private *mp = platform_get_drvdata(pdev); - return mii_nway_restart(&mp->mii); + /* Mask all interrupts on ethernet port */ + wrl(mp, INT_MASK(mp->port_num), 0); + rdl(mp, INT_MASK(mp->port_num)); + + if (netif_running(mp->dev)) + port_reset(mp); } -static int mv643xx_eth_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) +static struct platform_driver mv643xx_eth_driver = { + .probe = mv643xx_eth_probe, + .remove = mv643xx_eth_remove, + .shutdown = mv643xx_eth_shutdown, + .driver = { + .name = MV643XX_ETH_NAME, + .owner = THIS_MODULE, + }, +}; + +static int __init mv643xx_eth_init_module(void) { - struct mv643xx_private *mp = netdev_priv(dev); + int rc; + + rc = platform_driver_register(&mv643xx_eth_shared_driver); + if (!rc) { + rc = platform_driver_register(&mv643xx_eth_driver); + if (rc) + platform_driver_unregister(&mv643xx_eth_shared_driver); + } - return generic_mii_ioctl(&mp->mii, if_mii(ifr), cmd, NULL); + return rc; } +module_init(mv643xx_eth_init_module); -static const struct ethtool_ops mv643xx_ethtool_ops = { - .get_settings = mv643xx_get_settings, - .set_settings = mv643xx_set_settings, - .get_drvinfo = mv643xx_get_drvinfo, - .get_link = mv643xx_eth_get_link, - .set_sg = ethtool_op_set_sg, - .get_sset_count = mv643xx_get_sset_count, - .get_ethtool_stats = mv643xx_get_ethtool_stats, - .get_strings = mv643xx_get_strings, - .nway_reset = mv643xx_eth_nway_restart, -}; +static void __exit mv643xx_eth_cleanup_module(void) +{ + platform_driver_unregister(&mv643xx_eth_driver); + platform_driver_unregister(&mv643xx_eth_shared_driver); +} +module_exit(mv643xx_eth_cleanup_module); -/************* End ethtool support *************************/ +MODULE_AUTHOR("Rabeeh Khoury, Assaf Hoffman, Matthew Dharm, " + "Manish Lachwani, Dale Farnsworth and Lennert Buytenhek"); +MODULE_DESCRIPTION("Ethernet driver for Marvell MV643XX"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:" MV643XX_ETH_SHARED_NAME); +MODULE_ALIAS("platform:" MV643XX_ETH_NAME); |