diff options
Diffstat (limited to 'drivers/net/ethernet/sfc/falcon.c')
| -rw-r--r-- | drivers/net/ethernet/sfc/falcon.c | 1171 |
1 files changed, 1069 insertions, 102 deletions
diff --git a/drivers/net/ethernet/sfc/falcon.c b/drivers/net/ethernet/sfc/falcon.c index 71998e7995d9..ff5d322b9b49 100644 --- a/drivers/net/ethernet/sfc/falcon.c +++ b/drivers/net/ethernet/sfc/falcon.c @@ -1,7 +1,7 @@ /**************************************************************************** - * Driver for Solarflare Solarstorm network controllers and boards + * Driver for Solarflare network controllers and boards * Copyright 2005-2006 Fen Systems Ltd. - * Copyright 2006-2010 Solarflare Communications Inc. + * Copyright 2006-2013 Solarflare Communications Inc. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published @@ -19,17 +19,284 @@ #include "net_driver.h" #include "bitfield.h" #include "efx.h" -#include "spi.h" #include "nic.h" -#include "regs.h" +#include "farch_regs.h" #include "io.h" #include "phy.h" #include "workarounds.h" #include "selftest.h" +#include "mdio_10g.h" /* Hardware control for SFC4000 (aka Falcon). */ +/************************************************************************** + * + * NIC stats + * + ************************************************************************** + */ + +#define FALCON_MAC_STATS_SIZE 0x100 + +#define XgRxOctets_offset 0x0 +#define XgRxOctets_WIDTH 48 +#define XgRxOctetsOK_offset 0x8 +#define XgRxOctetsOK_WIDTH 48 +#define XgRxPkts_offset 0x10 +#define XgRxPkts_WIDTH 32 +#define XgRxPktsOK_offset 0x14 +#define XgRxPktsOK_WIDTH 32 +#define XgRxBroadcastPkts_offset 0x18 +#define XgRxBroadcastPkts_WIDTH 32 +#define XgRxMulticastPkts_offset 0x1C +#define XgRxMulticastPkts_WIDTH 32 +#define XgRxUnicastPkts_offset 0x20 +#define XgRxUnicastPkts_WIDTH 32 +#define XgRxUndersizePkts_offset 0x24 +#define XgRxUndersizePkts_WIDTH 32 +#define XgRxOversizePkts_offset 0x28 +#define XgRxOversizePkts_WIDTH 32 +#define XgRxJabberPkts_offset 0x2C +#define XgRxJabberPkts_WIDTH 32 +#define XgRxUndersizeFCSerrorPkts_offset 0x30 +#define XgRxUndersizeFCSerrorPkts_WIDTH 32 +#define XgRxDropEvents_offset 0x34 +#define XgRxDropEvents_WIDTH 32 +#define XgRxFCSerrorPkts_offset 0x38 +#define XgRxFCSerrorPkts_WIDTH 32 +#define XgRxAlignError_offset 0x3C +#define XgRxAlignError_WIDTH 32 +#define XgRxSymbolError_offset 0x40 +#define XgRxSymbolError_WIDTH 32 +#define XgRxInternalMACError_offset 0x44 +#define XgRxInternalMACError_WIDTH 32 +#define XgRxControlPkts_offset 0x48 +#define XgRxControlPkts_WIDTH 32 +#define XgRxPausePkts_offset 0x4C +#define XgRxPausePkts_WIDTH 32 +#define XgRxPkts64Octets_offset 0x50 +#define XgRxPkts64Octets_WIDTH 32 +#define XgRxPkts65to127Octets_offset 0x54 +#define XgRxPkts65to127Octets_WIDTH 32 +#define XgRxPkts128to255Octets_offset 0x58 +#define XgRxPkts128to255Octets_WIDTH 32 +#define XgRxPkts256to511Octets_offset 0x5C +#define XgRxPkts256to511Octets_WIDTH 32 +#define XgRxPkts512to1023Octets_offset 0x60 +#define XgRxPkts512to1023Octets_WIDTH 32 +#define XgRxPkts1024to15xxOctets_offset 0x64 +#define XgRxPkts1024to15xxOctets_WIDTH 32 +#define XgRxPkts15xxtoMaxOctets_offset 0x68 +#define XgRxPkts15xxtoMaxOctets_WIDTH 32 +#define XgRxLengthError_offset 0x6C +#define XgRxLengthError_WIDTH 32 +#define XgTxPkts_offset 0x80 +#define XgTxPkts_WIDTH 32 +#define XgTxOctets_offset 0x88 +#define XgTxOctets_WIDTH 48 +#define XgTxMulticastPkts_offset 0x90 +#define XgTxMulticastPkts_WIDTH 32 +#define XgTxBroadcastPkts_offset 0x94 +#define XgTxBroadcastPkts_WIDTH 32 +#define XgTxUnicastPkts_offset 0x98 +#define XgTxUnicastPkts_WIDTH 32 +#define XgTxControlPkts_offset 0x9C +#define XgTxControlPkts_WIDTH 32 +#define XgTxPausePkts_offset 0xA0 +#define XgTxPausePkts_WIDTH 32 +#define XgTxPkts64Octets_offset 0xA4 +#define XgTxPkts64Octets_WIDTH 32 +#define XgTxPkts65to127Octets_offset 0xA8 +#define XgTxPkts65to127Octets_WIDTH 32 +#define XgTxPkts128to255Octets_offset 0xAC +#define XgTxPkts128to255Octets_WIDTH 32 +#define XgTxPkts256to511Octets_offset 0xB0 +#define XgTxPkts256to511Octets_WIDTH 32 +#define XgTxPkts512to1023Octets_offset 0xB4 +#define XgTxPkts512to1023Octets_WIDTH 32 +#define XgTxPkts1024to15xxOctets_offset 0xB8 +#define XgTxPkts1024to15xxOctets_WIDTH 32 +#define XgTxPkts1519toMaxOctets_offset 0xBC +#define XgTxPkts1519toMaxOctets_WIDTH 32 +#define XgTxUndersizePkts_offset 0xC0 +#define XgTxUndersizePkts_WIDTH 32 +#define XgTxOversizePkts_offset 0xC4 +#define XgTxOversizePkts_WIDTH 32 +#define XgTxNonTcpUdpPkt_offset 0xC8 +#define XgTxNonTcpUdpPkt_WIDTH 16 +#define XgTxMacSrcErrPkt_offset 0xCC +#define XgTxMacSrcErrPkt_WIDTH 16 +#define XgTxIpSrcErrPkt_offset 0xD0 +#define XgTxIpSrcErrPkt_WIDTH 16 +#define XgDmaDone_offset 0xD4 +#define XgDmaDone_WIDTH 32 + +#define FALCON_XMAC_STATS_DMA_FLAG(efx) \ + (*(u32 *)((efx)->stats_buffer.addr + XgDmaDone_offset)) + +#define FALCON_DMA_STAT(ext_name, hw_name) \ + [FALCON_STAT_ ## ext_name] = \ + { #ext_name, \ + /* 48-bit stats are zero-padded to 64 on DMA */ \ + hw_name ## _ ## WIDTH == 48 ? 64 : hw_name ## _ ## WIDTH, \ + hw_name ## _ ## offset } +#define FALCON_OTHER_STAT(ext_name) \ + [FALCON_STAT_ ## ext_name] = { #ext_name, 0, 0 } + +static const struct efx_hw_stat_desc falcon_stat_desc[FALCON_STAT_COUNT] = { + FALCON_DMA_STAT(tx_bytes, XgTxOctets), + FALCON_DMA_STAT(tx_packets, XgTxPkts), + FALCON_DMA_STAT(tx_pause, XgTxPausePkts), + FALCON_DMA_STAT(tx_control, XgTxControlPkts), + FALCON_DMA_STAT(tx_unicast, XgTxUnicastPkts), + FALCON_DMA_STAT(tx_multicast, XgTxMulticastPkts), + FALCON_DMA_STAT(tx_broadcast, XgTxBroadcastPkts), + FALCON_DMA_STAT(tx_lt64, XgTxUndersizePkts), + FALCON_DMA_STAT(tx_64, XgTxPkts64Octets), + FALCON_DMA_STAT(tx_65_to_127, XgTxPkts65to127Octets), + FALCON_DMA_STAT(tx_128_to_255, XgTxPkts128to255Octets), + FALCON_DMA_STAT(tx_256_to_511, XgTxPkts256to511Octets), + FALCON_DMA_STAT(tx_512_to_1023, XgTxPkts512to1023Octets), + FALCON_DMA_STAT(tx_1024_to_15xx, XgTxPkts1024to15xxOctets), + FALCON_DMA_STAT(tx_15xx_to_jumbo, XgTxPkts1519toMaxOctets), + FALCON_DMA_STAT(tx_gtjumbo, XgTxOversizePkts), + FALCON_DMA_STAT(tx_non_tcpudp, XgTxNonTcpUdpPkt), + FALCON_DMA_STAT(tx_mac_src_error, XgTxMacSrcErrPkt), + FALCON_DMA_STAT(tx_ip_src_error, XgTxIpSrcErrPkt), + FALCON_DMA_STAT(rx_bytes, XgRxOctets), + FALCON_DMA_STAT(rx_good_bytes, XgRxOctetsOK), + FALCON_OTHER_STAT(rx_bad_bytes), + FALCON_DMA_STAT(rx_packets, XgRxPkts), + FALCON_DMA_STAT(rx_good, XgRxPktsOK), + FALCON_DMA_STAT(rx_bad, XgRxFCSerrorPkts), + FALCON_DMA_STAT(rx_pause, XgRxPausePkts), + FALCON_DMA_STAT(rx_control, XgRxControlPkts), + FALCON_DMA_STAT(rx_unicast, XgRxUnicastPkts), + FALCON_DMA_STAT(rx_multicast, XgRxMulticastPkts), + FALCON_DMA_STAT(rx_broadcast, XgRxBroadcastPkts), + FALCON_DMA_STAT(rx_lt64, XgRxUndersizePkts), + FALCON_DMA_STAT(rx_64, XgRxPkts64Octets), + FALCON_DMA_STAT(rx_65_to_127, XgRxPkts65to127Octets), + FALCON_DMA_STAT(rx_128_to_255, XgRxPkts128to255Octets), + FALCON_DMA_STAT(rx_256_to_511, XgRxPkts256to511Octets), + FALCON_DMA_STAT(rx_512_to_1023, XgRxPkts512to1023Octets), + FALCON_DMA_STAT(rx_1024_to_15xx, XgRxPkts1024to15xxOctets), + FALCON_DMA_STAT(rx_15xx_to_jumbo, XgRxPkts15xxtoMaxOctets), + FALCON_DMA_STAT(rx_gtjumbo, XgRxOversizePkts), + FALCON_DMA_STAT(rx_bad_lt64, XgRxUndersizeFCSerrorPkts), + FALCON_DMA_STAT(rx_bad_gtjumbo, XgRxJabberPkts), + FALCON_DMA_STAT(rx_overflow, XgRxDropEvents), + FALCON_DMA_STAT(rx_symbol_error, XgRxSymbolError), + FALCON_DMA_STAT(rx_align_error, XgRxAlignError), + FALCON_DMA_STAT(rx_length_error, XgRxLengthError), + FALCON_DMA_STAT(rx_internal_error, XgRxInternalMACError), + FALCON_OTHER_STAT(rx_nodesc_drop_cnt), +}; +static const unsigned long falcon_stat_mask[] = { + [0 ... BITS_TO_LONGS(FALCON_STAT_COUNT) - 1] = ~0UL, +}; + +/************************************************************************** + * + * Basic SPI command set and bit definitions + * + *************************************************************************/ + +#define SPI_WRSR 0x01 /* Write status register */ +#define SPI_WRITE 0x02 /* Write data to memory array */ +#define SPI_READ 0x03 /* Read data from memory array */ +#define SPI_WRDI 0x04 /* Reset write enable latch */ +#define SPI_RDSR 0x05 /* Read status register */ +#define SPI_WREN 0x06 /* Set write enable latch */ +#define SPI_SST_EWSR 0x50 /* SST: Enable write to status register */ + +#define SPI_STATUS_WPEN 0x80 /* Write-protect pin enabled */ +#define SPI_STATUS_BP2 0x10 /* Block protection bit 2 */ +#define SPI_STATUS_BP1 0x08 /* Block protection bit 1 */ +#define SPI_STATUS_BP0 0x04 /* Block protection bit 0 */ +#define SPI_STATUS_WEN 0x02 /* State of the write enable latch */ +#define SPI_STATUS_NRDY 0x01 /* Device busy flag */ + +/************************************************************************** + * + * Non-volatile memory layout + * + ************************************************************************** + */ + +/* SFC4000 flash is partitioned into: + * 0-0x400 chip and board config (see struct falcon_nvconfig) + * 0x400-0x8000 unused (or may contain VPD if EEPROM not present) + * 0x8000-end boot code (mapped to PCI expansion ROM) + * SFC4000 small EEPROM (size < 0x400) is used for VPD only. + * SFC4000 large EEPROM (size >= 0x400) is partitioned into: + * 0-0x400 chip and board config + * configurable VPD + * 0x800-0x1800 boot config + * Aside from the chip and board config, all of these are optional and may + * be absent or truncated depending on the devices used. + */ +#define FALCON_NVCONFIG_END 0x400U +#define FALCON_FLASH_BOOTCODE_START 0x8000U +#define FALCON_EEPROM_BOOTCONFIG_START 0x800U +#define FALCON_EEPROM_BOOTCONFIG_END 0x1800U + +/* Board configuration v2 (v1 is obsolete; later versions are compatible) */ +struct falcon_nvconfig_board_v2 { + __le16 nports; + u8 port0_phy_addr; + u8 port0_phy_type; + u8 port1_phy_addr; + u8 port1_phy_type; + __le16 asic_sub_revision; + __le16 board_revision; +} __packed; + +/* Board configuration v3 extra information */ +struct falcon_nvconfig_board_v3 { + __le32 spi_device_type[2]; +} __packed; + +/* Bit numbers for spi_device_type */ +#define SPI_DEV_TYPE_SIZE_LBN 0 +#define SPI_DEV_TYPE_SIZE_WIDTH 5 +#define SPI_DEV_TYPE_ADDR_LEN_LBN 6 +#define SPI_DEV_TYPE_ADDR_LEN_WIDTH 2 +#define SPI_DEV_TYPE_ERASE_CMD_LBN 8 +#define SPI_DEV_TYPE_ERASE_CMD_WIDTH 8 +#define SPI_DEV_TYPE_ERASE_SIZE_LBN 16 +#define SPI_DEV_TYPE_ERASE_SIZE_WIDTH 5 +#define SPI_DEV_TYPE_BLOCK_SIZE_LBN 24 +#define SPI_DEV_TYPE_BLOCK_SIZE_WIDTH 5 +#define SPI_DEV_TYPE_FIELD(type, field) \ + (((type) >> EFX_LOW_BIT(field)) & EFX_MASK32(EFX_WIDTH(field))) + +#define FALCON_NVCONFIG_OFFSET 0x300 + +#define FALCON_NVCONFIG_BOARD_MAGIC_NUM 0xFA1C +struct falcon_nvconfig { + efx_oword_t ee_vpd_cfg_reg; /* 0x300 */ + u8 mac_address[2][8]; /* 0x310 */ + efx_oword_t pcie_sd_ctl0123_reg; /* 0x320 */ + efx_oword_t pcie_sd_ctl45_reg; /* 0x330 */ + efx_oword_t pcie_pcs_ctl_stat_reg; /* 0x340 */ + efx_oword_t hw_init_reg; /* 0x350 */ + efx_oword_t nic_stat_reg; /* 0x360 */ + efx_oword_t glb_ctl_reg; /* 0x370 */ + efx_oword_t srm_cfg_reg; /* 0x380 */ + efx_oword_t spare_reg; /* 0x390 */ + __le16 board_magic_num; /* 0x3A0 */ + __le16 board_struct_ver; + __le16 board_checksum; + struct falcon_nvconfig_board_v2 board_v2; + efx_oword_t ee_base_page_reg; /* 0x3B0 */ + struct falcon_nvconfig_board_v3 board_v3; /* 0x3C0 */ +} __packed; + +/*************************************************************************/ + static int falcon_reset_hw(struct efx_nic *efx, enum reset_type method); +static void falcon_reconfigure_mac_wrapper(struct efx_nic *efx); static const unsigned int /* "Large" EEPROM device: Atmel AT25640 or similar @@ -146,7 +413,7 @@ static void falcon_prepare_flush(struct efx_nic *efx) * * NB most hardware supports MSI interrupts */ -inline void falcon_irq_ack_a1(struct efx_nic *efx) +static inline void falcon_irq_ack_a1(struct efx_nic *efx) { efx_dword_t reg; @@ -156,7 +423,7 @@ inline void falcon_irq_ack_a1(struct efx_nic *efx) } -irqreturn_t falcon_legacy_interrupt_a1(int irq, void *dev_id) +static irqreturn_t falcon_legacy_interrupt_a1(int irq, void *dev_id) { struct efx_nic *efx = dev_id; efx_oword_t *int_ker = efx->irq_status.addr; @@ -177,10 +444,13 @@ irqreturn_t falcon_legacy_interrupt_a1(int irq, void *dev_id) "IRQ %d on CPU %d status " EFX_OWORD_FMT "\n", irq, raw_smp_processor_id(), EFX_OWORD_VAL(*int_ker)); + if (!likely(ACCESS_ONCE(efx->irq_soft_enabled))) + return IRQ_HANDLED; + /* Check to see if we have a serious error condition */ syserr = EFX_OWORD_FIELD(*int_ker, FSF_AZ_NET_IVEC_FATAL_INT); if (unlikely(syserr)) - return efx_nic_fatal_interrupt(efx); + return efx_farch_fatal_interrupt(efx); /* Determine interrupting queues, clear interrupt status * register and acknowledge the device interrupt. @@ -241,9 +511,10 @@ static int falcon_spi_wait(struct efx_nic *efx) } } -int falcon_spi_cmd(struct efx_nic *efx, const struct efx_spi_device *spi, - unsigned int command, int address, - const void *in, void *out, size_t len) +static int +falcon_spi_cmd(struct efx_nic *efx, const struct falcon_spi_device *spi, + unsigned int command, int address, + const void *in, void *out, size_t len) { bool addressed = (address >= 0); bool reading = (out != NULL); @@ -297,48 +568,16 @@ int falcon_spi_cmd(struct efx_nic *efx, const struct efx_spi_device *spi, return 0; } -static size_t -falcon_spi_write_limit(const struct efx_spi_device *spi, size_t start) -{ - return min(FALCON_SPI_MAX_LEN, - (spi->block_size - (start & (spi->block_size - 1)))); -} - static inline u8 -efx_spi_munge_command(const struct efx_spi_device *spi, - const u8 command, const unsigned int address) +falcon_spi_munge_command(const struct falcon_spi_device *spi, + const u8 command, const unsigned int address) { return command | (((address >> 8) & spi->munge_address) << 3); } -/* Wait up to 10 ms for buffered write completion */ -int -falcon_spi_wait_write(struct efx_nic *efx, const struct efx_spi_device *spi) -{ - unsigned long timeout = jiffies + 1 + DIV_ROUND_UP(HZ, 100); - u8 status; - int rc; - - for (;;) { - rc = falcon_spi_cmd(efx, spi, SPI_RDSR, -1, NULL, - &status, sizeof(status)); - if (rc) - return rc; - if (!(status & SPI_STATUS_NRDY)) - return 0; - if (time_after_eq(jiffies, timeout)) { - netif_err(efx, hw, efx->net_dev, - "SPI write timeout on device %d" - " last status=0x%02x\n", - spi->device_id, status); - return -ETIMEDOUT; - } - schedule_timeout_uninterruptible(1); - } -} - -int falcon_spi_read(struct efx_nic *efx, const struct efx_spi_device *spi, - loff_t start, size_t len, size_t *retlen, u8 *buffer) +static int +falcon_spi_read(struct efx_nic *efx, const struct falcon_spi_device *spi, + loff_t start, size_t len, size_t *retlen, u8 *buffer) { size_t block_len, pos = 0; unsigned int command; @@ -347,7 +586,7 @@ int falcon_spi_read(struct efx_nic *efx, const struct efx_spi_device *spi, while (pos < len) { block_len = min(len - pos, FALCON_SPI_MAX_LEN); - command = efx_spi_munge_command(spi, SPI_READ, start + pos); + command = falcon_spi_munge_command(spi, SPI_READ, start + pos); rc = falcon_spi_cmd(efx, spi, command, start + pos, NULL, buffer + pos, block_len); if (rc) @@ -367,8 +606,52 @@ int falcon_spi_read(struct efx_nic *efx, const struct efx_spi_device *spi, return rc; } -int -falcon_spi_write(struct efx_nic *efx, const struct efx_spi_device *spi, +#ifdef CONFIG_SFC_MTD + +struct falcon_mtd_partition { + struct efx_mtd_partition common; + const struct falcon_spi_device *spi; + size_t offset; +}; + +#define to_falcon_mtd_partition(mtd) \ + container_of(mtd, struct falcon_mtd_partition, common.mtd) + +static size_t +falcon_spi_write_limit(const struct falcon_spi_device *spi, size_t start) +{ + return min(FALCON_SPI_MAX_LEN, + (spi->block_size - (start & (spi->block_size - 1)))); +} + +/* Wait up to 10 ms for buffered write completion */ +static int +falcon_spi_wait_write(struct efx_nic *efx, const struct falcon_spi_device *spi) +{ + unsigned long timeout = jiffies + 1 + DIV_ROUND_UP(HZ, 100); + u8 status; + int rc; + + for (;;) { + rc = falcon_spi_cmd(efx, spi, SPI_RDSR, -1, NULL, + &status, sizeof(status)); + if (rc) + return rc; + if (!(status & SPI_STATUS_NRDY)) + return 0; + if (time_after_eq(jiffies, timeout)) { + netif_err(efx, hw, efx->net_dev, + "SPI write timeout on device %d" + " last status=0x%02x\n", + spi->device_id, status); + return -ETIMEDOUT; + } + schedule_timeout_uninterruptible(1); + } +} + +static int +falcon_spi_write(struct efx_nic *efx, const struct falcon_spi_device *spi, loff_t start, size_t len, size_t *retlen, const u8 *buffer) { u8 verify_buffer[FALCON_SPI_MAX_LEN]; @@ -383,7 +666,7 @@ falcon_spi_write(struct efx_nic *efx, const struct efx_spi_device *spi, block_len = min(len - pos, falcon_spi_write_limit(spi, start + pos)); - command = efx_spi_munge_command(spi, SPI_WRITE, start + pos); + command = falcon_spi_munge_command(spi, SPI_WRITE, start + pos); rc = falcon_spi_cmd(efx, spi, command, start + pos, buffer + pos, NULL, block_len); if (rc) @@ -393,7 +676,7 @@ falcon_spi_write(struct efx_nic *efx, const struct efx_spi_device *spi, if (rc) break; - command = efx_spi_munge_command(spi, SPI_READ, start + pos); + command = falcon_spi_munge_command(spi, SPI_READ, start + pos); rc = falcon_spi_cmd(efx, spi, command, start + pos, NULL, verify_buffer, block_len); if (memcmp(verify_buffer, buffer + pos, block_len)) { @@ -416,6 +699,520 @@ falcon_spi_write(struct efx_nic *efx, const struct efx_spi_device *spi, return rc; } +static int +falcon_spi_slow_wait(struct falcon_mtd_partition *part, bool uninterruptible) +{ + const struct falcon_spi_device *spi = part->spi; + struct efx_nic *efx = part->common.mtd.priv; + u8 status; + int rc, i; + + /* Wait up to 4s for flash/EEPROM to finish a slow operation. */ + for (i = 0; i < 40; i++) { + __set_current_state(uninterruptible ? + TASK_UNINTERRUPTIBLE : TASK_INTERRUPTIBLE); + schedule_timeout(HZ / 10); + rc = falcon_spi_cmd(efx, spi, SPI_RDSR, -1, NULL, + &status, sizeof(status)); + if (rc) + return rc; + if (!(status & SPI_STATUS_NRDY)) + return 0; + if (signal_pending(current)) + return -EINTR; + } + pr_err("%s: timed out waiting for %s\n", + part->common.name, part->common.dev_type_name); + return -ETIMEDOUT; +} + +static int +falcon_spi_unlock(struct efx_nic *efx, const struct falcon_spi_device *spi) +{ + const u8 unlock_mask = (SPI_STATUS_BP2 | SPI_STATUS_BP1 | + SPI_STATUS_BP0); + u8 status; + int rc; + + rc = falcon_spi_cmd(efx, spi, SPI_RDSR, -1, NULL, + &status, sizeof(status)); + if (rc) + return rc; + + if (!(status & unlock_mask)) + return 0; /* already unlocked */ + + rc = falcon_spi_cmd(efx, spi, SPI_WREN, -1, NULL, NULL, 0); + if (rc) + return rc; + rc = falcon_spi_cmd(efx, spi, SPI_SST_EWSR, -1, NULL, NULL, 0); + if (rc) + return rc; + + status &= ~unlock_mask; + rc = falcon_spi_cmd(efx, spi, SPI_WRSR, -1, &status, + NULL, sizeof(status)); + if (rc) + return rc; + rc = falcon_spi_wait_write(efx, spi); + if (rc) + return rc; + + return 0; +} + +#define FALCON_SPI_VERIFY_BUF_LEN 16 + +static int +falcon_spi_erase(struct falcon_mtd_partition *part, loff_t start, size_t len) +{ + const struct falcon_spi_device *spi = part->spi; + struct efx_nic *efx = part->common.mtd.priv; + unsigned pos, block_len; + u8 empty[FALCON_SPI_VERIFY_BUF_LEN]; + u8 buffer[FALCON_SPI_VERIFY_BUF_LEN]; + int rc; + + if (len != spi->erase_size) + return -EINVAL; + + if (spi->erase_command == 0) + return -EOPNOTSUPP; + + rc = falcon_spi_unlock(efx, spi); + if (rc) + return rc; + rc = falcon_spi_cmd(efx, spi, SPI_WREN, -1, NULL, NULL, 0); + if (rc) + return rc; + rc = falcon_spi_cmd(efx, spi, spi->erase_command, start, NULL, + NULL, 0); + if (rc) + return rc; + rc = falcon_spi_slow_wait(part, false); + + /* Verify the entire region has been wiped */ + memset(empty, 0xff, sizeof(empty)); + for (pos = 0; pos < len; pos += block_len) { + block_len = min(len - pos, sizeof(buffer)); + rc = falcon_spi_read(efx, spi, start + pos, block_len, + NULL, buffer); + if (rc) + return rc; + if (memcmp(empty, buffer, block_len)) + return -EIO; + + /* Avoid locking up the system */ + cond_resched(); + if (signal_pending(current)) + return -EINTR; + } + + return rc; +} + +static void falcon_mtd_rename(struct efx_mtd_partition *part) +{ + struct efx_nic *efx = part->mtd.priv; + + snprintf(part->name, sizeof(part->name), "%s %s", + efx->name, part->type_name); +} + +static int falcon_mtd_read(struct mtd_info *mtd, loff_t start, + size_t len, size_t *retlen, u8 *buffer) +{ + struct falcon_mtd_partition *part = to_falcon_mtd_partition(mtd); + struct efx_nic *efx = mtd->priv; + struct falcon_nic_data *nic_data = efx->nic_data; + int rc; + + rc = mutex_lock_interruptible(&nic_data->spi_lock); + if (rc) + return rc; + rc = falcon_spi_read(efx, part->spi, part->offset + start, + len, retlen, buffer); + mutex_unlock(&nic_data->spi_lock); + return rc; +} + +static int falcon_mtd_erase(struct mtd_info *mtd, loff_t start, size_t len) +{ + struct falcon_mtd_partition *part = to_falcon_mtd_partition(mtd); + struct efx_nic *efx = mtd->priv; + struct falcon_nic_data *nic_data = efx->nic_data; + int rc; + + rc = mutex_lock_interruptible(&nic_data->spi_lock); + if (rc) + return rc; + rc = falcon_spi_erase(part, part->offset + start, len); + mutex_unlock(&nic_data->spi_lock); + return rc; +} + +static int falcon_mtd_write(struct mtd_info *mtd, loff_t start, + size_t len, size_t *retlen, const u8 *buffer) +{ + struct falcon_mtd_partition *part = to_falcon_mtd_partition(mtd); + struct efx_nic *efx = mtd->priv; + struct falcon_nic_data *nic_data = efx->nic_data; + int rc; + + rc = mutex_lock_interruptible(&nic_data->spi_lock); + if (rc) + return rc; + rc = falcon_spi_write(efx, part->spi, part->offset + start, + len, retlen, buffer); + mutex_unlock(&nic_data->spi_lock); + return rc; +} + +static int falcon_mtd_sync(struct mtd_info *mtd) +{ + struct falcon_mtd_partition *part = to_falcon_mtd_partition(mtd); + struct efx_nic *efx = mtd->priv; + struct falcon_nic_data *nic_data = efx->nic_data; + int rc; + + mutex_lock(&nic_data->spi_lock); + rc = falcon_spi_slow_wait(part, true); + mutex_unlock(&nic_data->spi_lock); + return rc; +} + +static int falcon_mtd_probe(struct efx_nic *efx) +{ + struct falcon_nic_data *nic_data = efx->nic_data; + struct falcon_mtd_partition *parts; + struct falcon_spi_device *spi; + size_t n_parts; + int rc = -ENODEV; + + ASSERT_RTNL(); + + /* Allocate space for maximum number of partitions */ + parts = kcalloc(2, sizeof(*parts), GFP_KERNEL); + if (!parts) + return -ENOMEM; + n_parts = 0; + + spi = &nic_data->spi_flash; + if (falcon_spi_present(spi) && spi->size > FALCON_FLASH_BOOTCODE_START) { + parts[n_parts].spi = spi; + parts[n_parts].offset = FALCON_FLASH_BOOTCODE_START; + parts[n_parts].common.dev_type_name = "flash"; + parts[n_parts].common.type_name = "sfc_flash_bootrom"; + parts[n_parts].common.mtd.type = MTD_NORFLASH; + parts[n_parts].common.mtd.flags = MTD_CAP_NORFLASH; + parts[n_parts].common.mtd.size = spi->size - FALCON_FLASH_BOOTCODE_START; + parts[n_parts].common.mtd.erasesize = spi->erase_size; + n_parts++; + } + + spi = &nic_data->spi_eeprom; + if (falcon_spi_present(spi) && spi->size > FALCON_EEPROM_BOOTCONFIG_START) { + parts[n_parts].spi = spi; + parts[n_parts].offset = FALCON_EEPROM_BOOTCONFIG_START; + parts[n_parts].common.dev_type_name = "EEPROM"; + parts[n_parts].common.type_name = "sfc_bootconfig"; + parts[n_parts].common.mtd.type = MTD_RAM; + parts[n_parts].common.mtd.flags = MTD_CAP_RAM; + parts[n_parts].common.mtd.size = + min(spi->size, FALCON_EEPROM_BOOTCONFIG_END) - + FALCON_EEPROM_BOOTCONFIG_START; + parts[n_parts].common.mtd.erasesize = spi->erase_size; + n_parts++; + } + + rc = efx_mtd_add(efx, &parts[0].common, n_parts, sizeof(*parts)); + if (rc) + kfree(parts); + return rc; +} + +#endif /* CONFIG_SFC_MTD */ + +/************************************************************************** + * + * XMAC operations + * + ************************************************************************** + */ + +/* Configure the XAUI driver that is an output from Falcon */ +static void falcon_setup_xaui(struct efx_nic *efx) +{ + efx_oword_t sdctl, txdrv; + + /* Move the XAUI into low power, unless there is no PHY, in + * which case the XAUI will have to drive a cable. */ + if (efx->phy_type == PHY_TYPE_NONE) + return; + + efx_reado(efx, &sdctl, FR_AB_XX_SD_CTL); + EFX_SET_OWORD_FIELD(sdctl, FRF_AB_XX_HIDRVD, FFE_AB_XX_SD_CTL_DRV_DEF); + EFX_SET_OWORD_FIELD(sdctl, FRF_AB_XX_LODRVD, FFE_AB_XX_SD_CTL_DRV_DEF); + EFX_SET_OWORD_FIELD(sdctl, FRF_AB_XX_HIDRVC, FFE_AB_XX_SD_CTL_DRV_DEF); + EFX_SET_OWORD_FIELD(sdctl, FRF_AB_XX_LODRVC, FFE_AB_XX_SD_CTL_DRV_DEF); + EFX_SET_OWORD_FIELD(sdctl, FRF_AB_XX_HIDRVB, FFE_AB_XX_SD_CTL_DRV_DEF); + EFX_SET_OWORD_FIELD(sdctl, FRF_AB_XX_LODRVB, FFE_AB_XX_SD_CTL_DRV_DEF); + EFX_SET_OWORD_FIELD(sdctl, FRF_AB_XX_HIDRVA, FFE_AB_XX_SD_CTL_DRV_DEF); + EFX_SET_OWORD_FIELD(sdctl, FRF_AB_XX_LODRVA, FFE_AB_XX_SD_CTL_DRV_DEF); + efx_writeo(efx, &sdctl, FR_AB_XX_SD_CTL); + + EFX_POPULATE_OWORD_8(txdrv, + FRF_AB_XX_DEQD, FFE_AB_XX_TXDRV_DEQ_DEF, + FRF_AB_XX_DEQC, FFE_AB_XX_TXDRV_DEQ_DEF, + FRF_AB_XX_DEQB, FFE_AB_XX_TXDRV_DEQ_DEF, + FRF_AB_XX_DEQA, FFE_AB_XX_TXDRV_DEQ_DEF, + FRF_AB_XX_DTXD, FFE_AB_XX_TXDRV_DTX_DEF, + FRF_AB_XX_DTXC, FFE_AB_XX_TXDRV_DTX_DEF, + FRF_AB_XX_DTXB, FFE_AB_XX_TXDRV_DTX_DEF, + FRF_AB_XX_DTXA, FFE_AB_XX_TXDRV_DTX_DEF); + efx_writeo(efx, &txdrv, FR_AB_XX_TXDRV_CTL); +} + +int falcon_reset_xaui(struct efx_nic *efx) +{ + struct falcon_nic_data *nic_data = efx->nic_data; + efx_oword_t reg; + int count; + + /* Don't fetch MAC statistics over an XMAC reset */ + WARN_ON(nic_data->stats_disable_count == 0); + + /* Start reset sequence */ + EFX_POPULATE_OWORD_1(reg, FRF_AB_XX_RST_XX_EN, 1); + efx_writeo(efx, ®, FR_AB_XX_PWR_RST); + + /* Wait up to 10 ms for completion, then reinitialise */ + for (count = 0; count < 1000; count++) { + efx_reado(efx, ®, FR_AB_XX_PWR_RST); + if (EFX_OWORD_FIELD(reg, FRF_AB_XX_RST_XX_EN) == 0 && + EFX_OWORD_FIELD(reg, FRF_AB_XX_SD_RST_ACT) == 0) { + falcon_setup_xaui(efx); + return 0; + } + udelay(10); + } + netif_err(efx, hw, efx->net_dev, + "timed out waiting for XAUI/XGXS reset\n"); + return -ETIMEDOUT; +} + +static void falcon_ack_status_intr(struct efx_nic *efx) +{ + struct falcon_nic_data *nic_data = efx->nic_data; + efx_oword_t reg; + + if ((efx_nic_rev(efx) != EFX_REV_FALCON_B0) || LOOPBACK_INTERNAL(efx)) + return; + + /* We expect xgmii faults if the wireside link is down */ + if (!efx->link_state.up) + return; + + /* We can only use this interrupt to signal the negative edge of + * xaui_align [we have to poll the positive edge]. */ + if (nic_data->xmac_poll_required) + return; + + efx_reado(efx, ®, FR_AB_XM_MGT_INT_MSK); +} + +static bool falcon_xgxs_link_ok(struct efx_nic *efx) +{ + efx_oword_t reg; + bool align_done, link_ok = false; + int sync_status; + + /* Read link status */ + efx_reado(efx, ®, FR_AB_XX_CORE_STAT); + + align_done = EFX_OWORD_FIELD(reg, FRF_AB_XX_ALIGN_DONE); + sync_status = EFX_OWORD_FIELD(reg, FRF_AB_XX_SYNC_STAT); + if (align_done && (sync_status == FFE_AB_XX_STAT_ALL_LANES)) + link_ok = true; + + /* Clear link status ready for next read */ + EFX_SET_OWORD_FIELD(reg, FRF_AB_XX_COMMA_DET, FFE_AB_XX_STAT_ALL_LANES); + EFX_SET_OWORD_FIELD(reg, FRF_AB_XX_CHAR_ERR, FFE_AB_XX_STAT_ALL_LANES); + EFX_SET_OWORD_FIELD(reg, FRF_AB_XX_DISPERR, FFE_AB_XX_STAT_ALL_LANES); + efx_writeo(efx, ®, FR_AB_XX_CORE_STAT); + + return link_ok; +} + +static bool falcon_xmac_link_ok(struct efx_nic *efx) +{ + /* + * Check MAC's XGXS link status except when using XGMII loopback + * which bypasses the XGXS block. + * If possible, check PHY's XGXS link status except when using + * MAC loopback. + */ + return (efx->loopback_mode == LOOPBACK_XGMII || + falcon_xgxs_link_ok(efx)) && + (!(efx->mdio.mmds & (1 << MDIO_MMD_PHYXS)) || + LOOPBACK_INTERNAL(efx) || + efx_mdio_phyxgxs_lane_sync(efx)); +} + +static void falcon_reconfigure_xmac_core(struct efx_nic *efx) +{ + unsigned int max_frame_len; + efx_oword_t reg; + bool rx_fc = !!(efx->link_state.fc & EFX_FC_RX); + bool tx_fc = !!(efx->link_state.fc & EFX_FC_TX); + + /* Configure MAC - cut-thru mode is hard wired on */ + EFX_POPULATE_OWORD_3(reg, + FRF_AB_XM_RX_JUMBO_MODE, 1, + FRF_AB_XM_TX_STAT_EN, 1, + FRF_AB_XM_RX_STAT_EN, 1); + efx_writeo(efx, ®, FR_AB_XM_GLB_CFG); + + /* Configure TX */ + EFX_POPULATE_OWORD_6(reg, + FRF_AB_XM_TXEN, 1, + FRF_AB_XM_TX_PRMBL, 1, + FRF_AB_XM_AUTO_PAD, 1, + FRF_AB_XM_TXCRC, 1, + FRF_AB_XM_FCNTL, tx_fc, + FRF_AB_XM_IPG, 0x3); + efx_writeo(efx, ®, FR_AB_XM_TX_CFG); + + /* Configure RX */ + EFX_POPULATE_OWORD_5(reg, + FRF_AB_XM_RXEN, 1, + FRF_AB_XM_AUTO_DEPAD, 0, + FRF_AB_XM_ACPT_ALL_MCAST, 1, + FRF_AB_XM_ACPT_ALL_UCAST, !efx->unicast_filter, + FRF_AB_XM_PASS_CRC_ERR, 1); + efx_writeo(efx, ®, FR_AB_XM_RX_CFG); + + /* Set frame length */ + max_frame_len = EFX_MAX_FRAME_LEN(efx->net_dev->mtu); + EFX_POPULATE_OWORD_1(reg, FRF_AB_XM_MAX_RX_FRM_SIZE, max_frame_len); + efx_writeo(efx, ®, FR_AB_XM_RX_PARAM); + EFX_POPULATE_OWORD_2(reg, + FRF_AB_XM_MAX_TX_FRM_SIZE, max_frame_len, + FRF_AB_XM_TX_JUMBO_MODE, 1); + efx_writeo(efx, ®, FR_AB_XM_TX_PARAM); + + EFX_POPULATE_OWORD_2(reg, + FRF_AB_XM_PAUSE_TIME, 0xfffe, /* MAX PAUSE TIME */ + FRF_AB_XM_DIS_FCNTL, !rx_fc); + efx_writeo(efx, ®, FR_AB_XM_FC); + + /* Set MAC address */ + memcpy(®, &efx->net_dev->dev_addr[0], 4); + efx_writeo(efx, ®, FR_AB_XM_ADR_LO); + memcpy(®, &efx->net_dev->dev_addr[4], 2); + efx_writeo(efx, ®, FR_AB_XM_ADR_HI); +} + +static void falcon_reconfigure_xgxs_core(struct efx_nic *efx) +{ + efx_oword_t reg; + bool xgxs_loopback = (efx->loopback_mode == LOOPBACK_XGXS); + bool xaui_loopback = (efx->loopback_mode == LOOPBACK_XAUI); + bool xgmii_loopback = (efx->loopback_mode == LOOPBACK_XGMII); + bool old_xgmii_loopback, old_xgxs_loopback, old_xaui_loopback; + + /* XGXS block is flaky and will need to be reset if moving + * into our out of XGMII, XGXS or XAUI loopbacks. */ + efx_reado(efx, ®, FR_AB_XX_CORE_STAT); + old_xgxs_loopback = EFX_OWORD_FIELD(reg, FRF_AB_XX_XGXS_LB_EN); + old_xgmii_loopback = EFX_OWORD_FIELD(reg, FRF_AB_XX_XGMII_LB_EN); + + efx_reado(efx, ®, FR_AB_XX_SD_CTL); + old_xaui_loopback = EFX_OWORD_FIELD(reg, FRF_AB_XX_LPBKA); + + /* The PHY driver may have turned XAUI off */ + if ((xgxs_loopback != old_xgxs_loopback) || + (xaui_loopback != old_xaui_loopback) || + (xgmii_loopback != old_xgmii_loopback)) + falcon_reset_xaui(efx); + + efx_reado(efx, ®, FR_AB_XX_CORE_STAT); + EFX_SET_OWORD_FIELD(reg, FRF_AB_XX_FORCE_SIG, + (xgxs_loopback || xaui_loopback) ? + FFE_AB_XX_FORCE_SIG_ALL_LANES : 0); + EFX_SET_OWORD_FIELD(reg, FRF_AB_XX_XGXS_LB_EN, xgxs_loopback); + EFX_SET_OWORD_FIELD(reg, FRF_AB_XX_XGMII_LB_EN, xgmii_loopback); + efx_writeo(efx, ®, FR_AB_XX_CORE_STAT); + + efx_reado(efx, ®, FR_AB_XX_SD_CTL); + EFX_SET_OWORD_FIELD(reg, FRF_AB_XX_LPBKD, xaui_loopback); + EFX_SET_OWORD_FIELD(reg, FRF_AB_XX_LPBKC, xaui_loopback); + EFX_SET_OWORD_FIELD(reg, FRF_AB_XX_LPBKB, xaui_loopback); + EFX_SET_OWORD_FIELD(reg, FRF_AB_XX_LPBKA, xaui_loopback); + efx_writeo(efx, ®, FR_AB_XX_SD_CTL); +} + + +/* Try to bring up the Falcon side of the Falcon-Phy XAUI link */ +static bool falcon_xmac_link_ok_retry(struct efx_nic *efx, int tries) +{ + bool mac_up = falcon_xmac_link_ok(efx); + + if (LOOPBACK_MASK(efx) & LOOPBACKS_EXTERNAL(efx) & LOOPBACKS_WS || + efx_phy_mode_disabled(efx->phy_mode)) + /* XAUI link is expected to be down */ + return mac_up; + + falcon_stop_nic_stats(efx); + + while (!mac_up && tries) { + netif_dbg(efx, hw, efx->net_dev, "bashing xaui\n"); + falcon_reset_xaui(efx); + udelay(200); + + mac_up = falcon_xmac_link_ok(efx); + --tries; + } + + falcon_start_nic_stats(efx); + + return mac_up; +} + +static bool falcon_xmac_check_fault(struct efx_nic *efx) +{ + return !falcon_xmac_link_ok_retry(efx, 5); +} + +static int falcon_reconfigure_xmac(struct efx_nic *efx) +{ + struct falcon_nic_data *nic_data = efx->nic_data; + + efx_farch_filter_sync_rx_mode(efx); + + falcon_reconfigure_xgxs_core(efx); + falcon_reconfigure_xmac_core(efx); + + falcon_reconfigure_mac_wrapper(efx); + + nic_data->xmac_poll_required = !falcon_xmac_link_ok_retry(efx, 5); + falcon_ack_status_intr(efx); + + return 0; +} + +static void falcon_poll_xmac(struct efx_nic *efx) +{ + struct falcon_nic_data *nic_data = efx->nic_data; + + /* We expect xgmii faults if the wireside link is down */ + if (!efx->link_state.up || !nic_data->xmac_poll_required) + return; + + nic_data->xmac_poll_required = !falcon_xmac_link_ok_retry(efx, 1); + falcon_ack_status_intr(efx); +} + /************************************************************************** * * MAC wrapper @@ -497,7 +1294,7 @@ static void falcon_reset_macs(struct efx_nic *efx) falcon_setup_xaui(efx); } -void falcon_drain_tx_fifo(struct efx_nic *efx) +static void falcon_drain_tx_fifo(struct efx_nic *efx) { efx_oword_t reg; @@ -529,7 +1326,7 @@ static void falcon_deconfigure_mac_wrapper(struct efx_nic *efx) falcon_drain_tx_fifo(efx); } -void falcon_reconfigure_mac_wrapper(struct efx_nic *efx) +static void falcon_reconfigure_mac_wrapper(struct efx_nic *efx) { struct efx_link_state *link_state = &efx->link_state; efx_oword_t reg; @@ -550,7 +1347,7 @@ void falcon_reconfigure_mac_wrapper(struct efx_nic *efx) EFX_POPULATE_OWORD_5(reg, FRF_AB_MAC_XOFF_VAL, 0xffff /* max pause time */, FRF_AB_MAC_BCAD_ACPT, 1, - FRF_AB_MAC_UC_PROM, efx->promiscuous, + FRF_AB_MAC_UC_PROM, !efx->unicast_filter, FRF_AB_MAC_LINK_STATUS, 1, /* always set */ FRF_AB_MAC_SPEED, link_speed); /* On B0, MAC backpressure can be disabled and packets get @@ -583,10 +1380,7 @@ static void falcon_stats_request(struct efx_nic *efx) WARN_ON(nic_data->stats_pending); WARN_ON(nic_data->stats_disable_count); - if (nic_data->stats_dma_done == NULL) - return; /* no mac selected */ - - *nic_data->stats_dma_done = FALCON_STATS_NOT_DONE; + FALCON_XMAC_STATS_DMA_FLAG(efx) = 0; nic_data->stats_pending = true; wmb(); /* ensure done flag is clear */ @@ -608,9 +1402,11 @@ static void falcon_stats_complete(struct efx_nic *efx) return; nic_data->stats_pending = false; - if (*nic_data->stats_dma_done == FALCON_STATS_DONE) { + if (FALCON_XMAC_STATS_DMA_FLAG(efx)) { rmb(); /* read the done flag before the stats */ - falcon_update_stats_xmac(efx); + efx_nic_update_stats(falcon_stat_desc, FALCON_STAT_COUNT, + falcon_stat_mask, nic_data->stats, + efx->stats_buffer.addr, true); } else { netif_err(efx, hw, efx->net_dev, "timed out waiting for statistics\n"); @@ -678,6 +1474,28 @@ static int falcon_reconfigure_port(struct efx_nic *efx) return 0; } +/* TX flow control may automatically turn itself off if the link + * partner (intermittently) stops responding to pause frames. There + * isn't any indication that this has happened, so the best we do is + * leave it up to the user to spot this and fix it by cycling transmit + * flow control on this end. + */ + +static void falcon_a1_prepare_enable_fc_tx(struct efx_nic *efx) +{ + /* Schedule a reset to recover */ + efx_schedule_reset(efx, RESET_TYPE_INVISIBLE); +} + +static void falcon_b0_prepare_enable_fc_tx(struct efx_nic *efx) +{ + /* Recover by resetting the EM block */ + falcon_stop_nic_stats(efx); + falcon_drain_tx_fifo(efx); + falcon_reconfigure_xmac(efx); + falcon_start_nic_stats(efx); +} + /************************************************************************** * * PHY access via GMII @@ -861,7 +1679,7 @@ static int falcon_probe_port(struct efx_nic *efx) /* Allocate buffer for stats */ rc = efx_nic_alloc_buffer(efx, &efx->stats_buffer, - FALCON_MAC_STATS_SIZE); + FALCON_MAC_STATS_SIZE, GFP_KERNEL); if (rc) return rc; netif_dbg(efx, probe, efx->net_dev, @@ -869,7 +1687,6 @@ static int falcon_probe_port(struct efx_nic *efx) (u64)efx->stats_buffer.dma_addr, efx->stats_buffer.addr, (u64)virt_to_phys(efx->stats_buffer.addr)); - nic_data->stats_dma_done = efx->stats_buffer.addr + XgDmaDone_offset; return 0; } @@ -926,15 +1743,15 @@ falcon_read_nvram(struct efx_nic *efx, struct falcon_nvconfig *nvconfig_out) { struct falcon_nic_data *nic_data = efx->nic_data; struct falcon_nvconfig *nvconfig; - struct efx_spi_device *spi; + struct falcon_spi_device *spi; void *region; int rc, magic_num, struct_ver; __le16 *word, *limit; u32 csum; - if (efx_spi_present(&nic_data->spi_flash)) + if (falcon_spi_present(&nic_data->spi_flash)) spi = &nic_data->spi_flash; - else if (efx_spi_present(&nic_data->spi_eeprom)) + else if (falcon_spi_present(&nic_data->spi_eeprom)) spi = &nic_data->spi_eeprom; else return -EINVAL; @@ -949,7 +1766,7 @@ falcon_read_nvram(struct efx_nic *efx, struct falcon_nvconfig *nvconfig_out) mutex_unlock(&nic_data->spi_lock); if (rc) { netif_err(efx, hw, efx->net_dev, "Failed to read %s\n", - efx_spi_present(&nic_data->spi_flash) ? + falcon_spi_present(&nic_data->spi_flash) ? "flash" : "EEPROM"); rc = -EIO; goto out; @@ -998,7 +1815,7 @@ static int falcon_test_nvram(struct efx_nic *efx) return falcon_read_nvram(efx, NULL); } -static const struct efx_nic_register_test falcon_b0_register_tests[] = { +static const struct efx_farch_register_test falcon_b0_register_tests[] = { { FR_AZ_ADR_REGION, EFX_OWORD32(0x0003FFFF, 0x0003FFFF, 0x0003FFFF, 0x0003FFFF) }, { FR_AZ_RX_CFG, @@ -1058,8 +1875,8 @@ falcon_b0_test_chip(struct efx_nic *efx, struct efx_self_tests *tests) efx_reset_down(efx, reset_method); tests->registers = - efx_nic_test_registers(efx, falcon_b0_register_tests, - ARRAY_SIZE(falcon_b0_register_tests)) + efx_farch_test_registers(efx, falcon_b0_register_tests, + ARRAY_SIZE(falcon_b0_register_tests)) ? -1 : 1; rc = falcon_reset_hw(efx, reset_method); @@ -1078,8 +1895,7 @@ static enum reset_type falcon_map_reset_reason(enum reset_type reason) { switch (reason) { case RESET_TYPE_RX_RECOVERY: - case RESET_TYPE_RX_DESC_FETCH: - case RESET_TYPE_TX_DESC_FETCH: + case RESET_TYPE_DMA_ERROR: case RESET_TYPE_TX_SKIP: /* These can occasionally occur due to hardware bugs. * We try to reset without disrupting the link. @@ -1294,7 +2110,7 @@ static int falcon_reset_sram(struct efx_nic *efx) } static void falcon_spi_device_init(struct efx_nic *efx, - struct efx_spi_device *spi_device, + struct falcon_spi_device *spi_device, unsigned int device_id, u32 device_type) { if (device_type != 0) { @@ -1360,10 +2176,11 @@ out: return rc; } -static void falcon_dimension_resources(struct efx_nic *efx) +static int falcon_dimension_resources(struct efx_nic *efx) { efx->rx_dc_base = 0x20000; efx->tx_dc_base = 0x26000; + return 0; } /* Probe all SPI devices on the NIC */ @@ -1410,6 +2227,20 @@ static void falcon_probe_spi_devices(struct efx_nic *efx) large_eeprom_type); } +static unsigned int falcon_a1_mem_map_size(struct efx_nic *efx) +{ + return 0x20000; +} + +static unsigned int falcon_b0_mem_map_size(struct efx_nic *efx) +{ + /* Map everything up to and including the RSS indirection table. + * The PCI core takes care of mapping the MSI-X tables. + */ + return FR_BZ_RX_INDIRECTION_TBL + + FR_BZ_RX_INDIRECTION_TBL_STEP * FR_BZ_RX_INDIRECTION_TBL_ROWS; +} + static int falcon_probe_nic(struct efx_nic *efx) { struct falcon_nic_data *nic_data; @@ -1424,7 +2255,7 @@ static int falcon_probe_nic(struct efx_nic *efx) rc = -ENODEV; - if (efx_nic_fpga_ver(efx) != 0) { + if (efx_farch_fpga_ver(efx) != 0) { netif_err(efx, probe, efx->net_dev, "Falcon FPGA not supported\n"); goto fail1; @@ -1478,7 +2309,8 @@ static int falcon_probe_nic(struct efx_nic *efx) } /* Allocate memory for INT_KER */ - rc = efx_nic_alloc_buffer(efx, &efx->irq_status, sizeof(efx_oword_t)); + rc = efx_nic_alloc_buffer(efx, &efx->irq_status, sizeof(efx_oword_t), + GFP_KERNEL); if (rc) goto fail4; BUG_ON(efx->irq_status.dma_addr & 0x0f); @@ -1499,6 +2331,8 @@ static int falcon_probe_nic(struct efx_nic *efx) goto fail5; } + efx->max_channels = (efx_nic_rev(efx) <= EFX_REV_FALCON_A1 ? 4 : + EFX_MAX_CHANNELS); efx->timer_quantum_ns = 4968; /* 621 cycles */ /* Initialise I2C adapter */ @@ -1657,7 +2491,7 @@ static int falcon_init_nic(struct efx_nic *efx) efx_writeo(efx, &temp, FR_BZ_DP_CTRL); } - efx_nic_init_common(efx); + efx_farch_init_common(efx); return 0; } @@ -1688,24 +2522,65 @@ static void falcon_remove_nic(struct efx_nic *efx) efx->nic_data = NULL; } -static void falcon_update_nic_stats(struct efx_nic *efx) +static size_t falcon_describe_nic_stats(struct efx_nic *efx, u8 *names) +{ + return efx_nic_describe_stats(falcon_stat_desc, FALCON_STAT_COUNT, + falcon_stat_mask, names); +} + +static size_t falcon_update_nic_stats(struct efx_nic *efx, u64 *full_stats, + struct rtnl_link_stats64 *core_stats) { struct falcon_nic_data *nic_data = efx->nic_data; + u64 *stats = nic_data->stats; efx_oword_t cnt; - if (nic_data->stats_disable_count) - return; + if (!nic_data->stats_disable_count) { + efx_reado(efx, &cnt, FR_AZ_RX_NODESC_DROP); + stats[FALCON_STAT_rx_nodesc_drop_cnt] += + EFX_OWORD_FIELD(cnt, FRF_AB_RX_NODESC_DROP_CNT); + + if (nic_data->stats_pending && + FALCON_XMAC_STATS_DMA_FLAG(efx)) { + nic_data->stats_pending = false; + rmb(); /* read the done flag before the stats */ + efx_nic_update_stats( + falcon_stat_desc, FALCON_STAT_COUNT, + falcon_stat_mask, + stats, efx->stats_buffer.addr, true); + } - efx_reado(efx, &cnt, FR_AZ_RX_NODESC_DROP); - efx->n_rx_nodesc_drop_cnt += - EFX_OWORD_FIELD(cnt, FRF_AB_RX_NODESC_DROP_CNT); + /* Update derived statistic */ + efx_update_diff_stat(&stats[FALCON_STAT_rx_bad_bytes], + stats[FALCON_STAT_rx_bytes] - + stats[FALCON_STAT_rx_good_bytes] - + stats[FALCON_STAT_rx_control] * 64); + } - if (nic_data->stats_pending && - *nic_data->stats_dma_done == FALCON_STATS_DONE) { - nic_data->stats_pending = false; - rmb(); /* read the done flag before the stats */ - falcon_update_stats_xmac(efx); + if (full_stats) + memcpy(full_stats, stats, sizeof(u64) * FALCON_STAT_COUNT); + + if (core_stats) { + core_stats->rx_packets = stats[FALCON_STAT_rx_packets]; + core_stats->tx_packets = stats[FALCON_STAT_tx_packets]; + core_stats->rx_bytes = stats[FALCON_STAT_rx_bytes]; + core_stats->tx_bytes = stats[FALCON_STAT_tx_bytes]; + core_stats->rx_dropped = stats[FALCON_STAT_rx_nodesc_drop_cnt]; + core_stats->multicast = stats[FALCON_STAT_rx_multicast]; + core_stats->rx_length_errors = + stats[FALCON_STAT_rx_gtjumbo] + + stats[FALCON_STAT_rx_length_error]; + core_stats->rx_crc_errors = stats[FALCON_STAT_rx_bad]; + core_stats->rx_frame_errors = stats[FALCON_STAT_rx_align_error]; + core_stats->rx_fifo_errors = stats[FALCON_STAT_rx_overflow]; + + core_stats->rx_errors = (core_stats->rx_length_errors + + core_stats->rx_crc_errors + + core_stats->rx_frame_errors + + stats[FALCON_STAT_rx_symbol_error]); } + + return FALCON_STAT_COUNT; } void falcon_start_nic_stats(struct efx_nic *efx) @@ -1734,7 +2609,7 @@ void falcon_stop_nic_stats(struct efx_nic *efx) /* Wait enough time for the most recent transfer to * complete. */ for (i = 0; i < 4 && nic_data->stats_pending; i++) { - if (*nic_data->stats_dma_done == FALCON_STATS_DONE) + if (FALCON_XMAC_STATS_DMA_FLAG(efx)) break; msleep(1); } @@ -1778,11 +2653,12 @@ static int falcon_set_wol(struct efx_nic *efx, u32 type) */ const struct efx_nic_type falcon_a1_nic_type = { + .mem_map_size = falcon_a1_mem_map_size, .probe = falcon_probe_nic, .remove = falcon_remove_nic, .init = falcon_init_nic, .dimension_resources = falcon_dimension_resources, - .fini = efx_port_dummy_op_void, + .fini = falcon_irq_ack_a1, .monitor = falcon_monitor, .map_reset_reason = falcon_map_reset_reason, .map_reset_flags = falcon_map_reset_flags, @@ -1790,23 +2666,71 @@ const struct efx_nic_type falcon_a1_nic_type = { .probe_port = falcon_probe_port, .remove_port = falcon_remove_port, .handle_global_event = falcon_handle_global_event, + .fini_dmaq = efx_farch_fini_dmaq, .prepare_flush = falcon_prepare_flush, .finish_flush = efx_port_dummy_op_void, + .describe_stats = falcon_describe_nic_stats, .update_stats = falcon_update_nic_stats, .start_stats = falcon_start_nic_stats, .stop_stats = falcon_stop_nic_stats, .set_id_led = falcon_set_id_led, .push_irq_moderation = falcon_push_irq_moderation, .reconfigure_port = falcon_reconfigure_port, + .prepare_enable_fc_tx = falcon_a1_prepare_enable_fc_tx, .reconfigure_mac = falcon_reconfigure_xmac, .check_mac_fault = falcon_xmac_check_fault, .get_wol = falcon_get_wol, .set_wol = falcon_set_wol, .resume_wol = efx_port_dummy_op_void, .test_nvram = falcon_test_nvram, + .irq_enable_master = efx_farch_irq_enable_master, + .irq_test_generate = efx_farch_irq_test_generate, + .irq_disable_non_ev = efx_farch_irq_disable_master, + .irq_handle_msi = efx_farch_msi_interrupt, + .irq_handle_legacy = falcon_legacy_interrupt_a1, + .tx_probe = efx_farch_tx_probe, + .tx_init = efx_farch_tx_init, + .tx_remove = efx_farch_tx_remove, + .tx_write = efx_farch_tx_write, + .rx_push_indir_table = efx_farch_rx_push_indir_table, + .rx_probe = efx_farch_rx_probe, + .rx_init = efx_farch_rx_init, + .rx_remove = efx_farch_rx_remove, + .rx_write = efx_farch_rx_write, + .rx_defer_refill = efx_farch_rx_defer_refill, + .ev_probe = efx_farch_ev_probe, + .ev_init = efx_farch_ev_init, + .ev_fini = efx_farch_ev_fini, + .ev_remove = efx_farch_ev_remove, + .ev_process = efx_farch_ev_process, + .ev_read_ack = efx_farch_ev_read_ack, + .ev_test_generate = efx_farch_ev_test_generate, + + /* We don't expose the filter table on Falcon A1 as it is not + * mapped into function 0, but these implementations still + * work with a degenerate case of all tables set to size 0. + */ + .filter_table_probe = efx_farch_filter_table_probe, + .filter_table_restore = efx_farch_filter_table_restore, + .filter_table_remove = efx_farch_filter_table_remove, + .filter_insert = efx_farch_filter_insert, + .filter_remove_safe = efx_farch_filter_remove_safe, + .filter_get_safe = efx_farch_filter_get_safe, + .filter_clear_rx = efx_farch_filter_clear_rx, + .filter_count_rx_used = efx_farch_filter_count_rx_used, + .filter_get_rx_id_limit = efx_farch_filter_get_rx_id_limit, + .filter_get_rx_ids = efx_farch_filter_get_rx_ids, + +#ifdef CONFIG_SFC_MTD + .mtd_probe = falcon_mtd_probe, + .mtd_rename = falcon_mtd_rename, + .mtd_read = falcon_mtd_read, + .mtd_erase = falcon_mtd_erase, + .mtd_write = falcon_mtd_write, + .mtd_sync = falcon_mtd_sync, +#endif .revision = EFX_REV_FALCON_A1, - .mem_map_size = 0x20000, .txd_ptr_tbl_base = FR_AA_TX_DESC_PTR_TBL_KER, .rxd_ptr_tbl_base = FR_AA_RX_DESC_PTR_TBL_KER, .buf_tbl_base = FR_AA_BUF_FULL_TBL_KER, @@ -1816,12 +2740,13 @@ const struct efx_nic_type falcon_a1_nic_type = { .rx_buffer_padding = 0x24, .can_rx_scatter = false, .max_interrupt_mode = EFX_INT_MODE_MSI, - .phys_addr_channels = 4, .timer_period_max = 1 << FRF_AB_TC_TIMER_VAL_WIDTH, .offload_features = NETIF_F_IP_CSUM, + .mcdi_max_ver = -1, }; const struct efx_nic_type falcon_b0_nic_type = { + .mem_map_size = falcon_b0_mem_map_size, .probe = falcon_probe_nic, .remove = falcon_remove_nic, .init = falcon_init_nic, @@ -1834,14 +2759,17 @@ const struct efx_nic_type falcon_b0_nic_type = { .probe_port = falcon_probe_port, .remove_port = falcon_remove_port, .handle_global_event = falcon_handle_global_event, + .fini_dmaq = efx_farch_fini_dmaq, .prepare_flush = falcon_prepare_flush, .finish_flush = efx_port_dummy_op_void, + .describe_stats = falcon_describe_nic_stats, .update_stats = falcon_update_nic_stats, .start_stats = falcon_start_nic_stats, .stop_stats = falcon_stop_nic_stats, .set_id_led = falcon_set_id_led, .push_irq_moderation = falcon_push_irq_moderation, .reconfigure_port = falcon_reconfigure_port, + .prepare_enable_fc_tx = falcon_b0_prepare_enable_fc_tx, .reconfigure_mac = falcon_reconfigure_xmac, .check_mac_fault = falcon_xmac_check_fault, .get_wol = falcon_get_wol, @@ -1849,28 +2777,67 @@ const struct efx_nic_type falcon_b0_nic_type = { .resume_wol = efx_port_dummy_op_void, .test_chip = falcon_b0_test_chip, .test_nvram = falcon_test_nvram, + .irq_enable_master = efx_farch_irq_enable_master, + .irq_test_generate = efx_farch_irq_test_generate, + .irq_disable_non_ev = efx_farch_irq_disable_master, + .irq_handle_msi = efx_farch_msi_interrupt, + .irq_handle_legacy = efx_farch_legacy_interrupt, + .tx_probe = efx_farch_tx_probe, + .tx_init = efx_farch_tx_init, + .tx_remove = efx_farch_tx_remove, + .tx_write = efx_farch_tx_write, + .rx_push_indir_table = efx_farch_rx_push_indir_table, + .rx_probe = efx_farch_rx_probe, + .rx_init = efx_farch_rx_init, + .rx_remove = efx_farch_rx_remove, + .rx_write = efx_farch_rx_write, + .rx_defer_refill = efx_farch_rx_defer_refill, + .ev_probe = efx_farch_ev_probe, + .ev_init = efx_farch_ev_init, + .ev_fini = efx_farch_ev_fini, + .ev_remove = efx_farch_ev_remove, + .ev_process = efx_farch_ev_process, + .ev_read_ack = efx_farch_ev_read_ack, + .ev_test_generate = efx_farch_ev_test_generate, + .filter_table_probe = efx_farch_filter_table_probe, + .filter_table_restore = efx_farch_filter_table_restore, + .filter_table_remove = efx_farch_filter_table_remove, + .filter_update_rx_scatter = efx_farch_filter_update_rx_scatter, + .filter_insert = efx_farch_filter_insert, + .filter_remove_safe = efx_farch_filter_remove_safe, + .filter_get_safe = efx_farch_filter_get_safe, + .filter_clear_rx = efx_farch_filter_clear_rx, + .filter_count_rx_used = efx_farch_filter_count_rx_used, + .filter_get_rx_id_limit = efx_farch_filter_get_rx_id_limit, + .filter_get_rx_ids = efx_farch_filter_get_rx_ids, +#ifdef CONFIG_RFS_ACCEL + .filter_rfs_insert = efx_farch_filter_rfs_insert, + .filter_rfs_expire_one = efx_farch_filter_rfs_expire_one, +#endif +#ifdef CONFIG_SFC_MTD + .mtd_probe = falcon_mtd_probe, + .mtd_rename = falcon_mtd_rename, + .mtd_read = falcon_mtd_read, + .mtd_erase = falcon_mtd_erase, + .mtd_write = falcon_mtd_write, + .mtd_sync = falcon_mtd_sync, +#endif .revision = EFX_REV_FALCON_B0, - /* Map everything up to and including the RSS indirection - * table. Don't map MSI-X table, MSI-X PBA since Linux - * requires that they not be mapped. */ - .mem_map_size = (FR_BZ_RX_INDIRECTION_TBL + - FR_BZ_RX_INDIRECTION_TBL_STEP * - FR_BZ_RX_INDIRECTION_TBL_ROWS), .txd_ptr_tbl_base = FR_BZ_TX_DESC_PTR_TBL, .rxd_ptr_tbl_base = FR_BZ_RX_DESC_PTR_TBL, .buf_tbl_base = FR_BZ_BUF_FULL_TBL, .evq_ptr_tbl_base = FR_BZ_EVQ_PTR_TBL, .evq_rptr_tbl_base = FR_BZ_EVQ_RPTR, .max_dma_mask = DMA_BIT_MASK(FSF_AZ_TX_KER_BUF_ADDR_WIDTH), - .rx_buffer_hash_size = 0x10, + .rx_prefix_size = FS_BZ_RX_PREFIX_SIZE, + .rx_hash_offset = FS_BZ_RX_PREFIX_HASH_OFST, .rx_buffer_padding = 0, .can_rx_scatter = true, .max_interrupt_mode = EFX_INT_MODE_MSIX, - .phys_addr_channels = 32, /* Hardware limit is 64, but the legacy - * interrupt handler only supports 32 - * channels */ .timer_period_max = 1 << FRF_AB_TC_TIMER_VAL_WIDTH, .offload_features = NETIF_F_IP_CSUM | NETIF_F_RXHASH | NETIF_F_NTUPLE, + .mcdi_max_ver = -1, + .max_rx_ip_filters = FR_BZ_RX_FILTER_TBL0_ROWS, }; |