diff options
Diffstat (limited to 'drivers/net/ethernet/sfc/siena.c')
| -rw-r--r-- | drivers/net/ethernet/sfc/siena.c | 1029 |
1 files changed, 1029 insertions, 0 deletions
diff --git a/drivers/net/ethernet/sfc/siena.c b/drivers/net/ethernet/sfc/siena.c new file mode 100644 index 000000000..f12c81193 --- /dev/null +++ b/drivers/net/ethernet/sfc/siena.c @@ -0,0 +1,1029 @@ +/**************************************************************************** + * Driver for Solarflare network controllers and boards + * Copyright 2005-2006 Fen Systems Ltd. + * 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 + * by the Free Software Foundation, incorporated herein by reference. + */ + +#include <linux/bitops.h> +#include <linux/delay.h> +#include <linux/pci.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/random.h> +#include "net_driver.h" +#include "bitfield.h" +#include "efx.h" +#include "nic.h" +#include "farch_regs.h" +#include "io.h" +#include "phy.h" +#include "workarounds.h" +#include "mcdi.h" +#include "mcdi_pcol.h" +#include "selftest.h" + +/* Hardware control for SFC9000 family including SFL9021 (aka Siena). */ + +static void siena_init_wol(struct efx_nic *efx); + + +static void siena_push_irq_moderation(struct efx_channel *channel) +{ + efx_dword_t timer_cmd; + + if (channel->irq_moderation) + EFX_POPULATE_DWORD_2(timer_cmd, + FRF_CZ_TC_TIMER_MODE, + FFE_CZ_TIMER_MODE_INT_HLDOFF, + FRF_CZ_TC_TIMER_VAL, + channel->irq_moderation - 1); + else + EFX_POPULATE_DWORD_2(timer_cmd, + FRF_CZ_TC_TIMER_MODE, + FFE_CZ_TIMER_MODE_DIS, + FRF_CZ_TC_TIMER_VAL, 0); + efx_writed_page_locked(channel->efx, &timer_cmd, FR_BZ_TIMER_COMMAND_P0, + channel->channel); +} + +void siena_prepare_flush(struct efx_nic *efx) +{ + if (efx->fc_disable++ == 0) + efx_mcdi_set_mac(efx); +} + +void siena_finish_flush(struct efx_nic *efx) +{ + if (--efx->fc_disable == 0) + efx_mcdi_set_mac(efx); +} + +static const struct efx_farch_register_test siena_register_tests[] = { + { FR_AZ_ADR_REGION, + EFX_OWORD32(0x0003FFFF, 0x0003FFFF, 0x0003FFFF, 0x0003FFFF) }, + { FR_CZ_USR_EV_CFG, + EFX_OWORD32(0x000103FF, 0x00000000, 0x00000000, 0x00000000) }, + { FR_AZ_RX_CFG, + EFX_OWORD32(0xFFFFFFFE, 0xFFFFFFFF, 0x0003FFFF, 0x00000000) }, + { FR_AZ_TX_CFG, + EFX_OWORD32(0x7FFF0037, 0xFFFF8000, 0xFFFFFFFF, 0x03FFFFFF) }, + { FR_AZ_TX_RESERVED, + EFX_OWORD32(0xFFFEFE80, 0x1FFFFFFF, 0x020000FE, 0x007FFFFF) }, + { FR_AZ_SRM_TX_DC_CFG, + EFX_OWORD32(0x001FFFFF, 0x00000000, 0x00000000, 0x00000000) }, + { FR_AZ_RX_DC_CFG, + EFX_OWORD32(0x00000003, 0x00000000, 0x00000000, 0x00000000) }, + { FR_AZ_RX_DC_PF_WM, + EFX_OWORD32(0x000003FF, 0x00000000, 0x00000000, 0x00000000) }, + { FR_BZ_DP_CTRL, + EFX_OWORD32(0x00000FFF, 0x00000000, 0x00000000, 0x00000000) }, + { FR_BZ_RX_RSS_TKEY, + EFX_OWORD32(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF) }, + { FR_CZ_RX_RSS_IPV6_REG1, + EFX_OWORD32(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF) }, + { FR_CZ_RX_RSS_IPV6_REG2, + EFX_OWORD32(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF) }, + { FR_CZ_RX_RSS_IPV6_REG3, + EFX_OWORD32(0xFFFFFFFF, 0xFFFFFFFF, 0x00000007, 0x00000000) }, +}; + +static int siena_test_chip(struct efx_nic *efx, struct efx_self_tests *tests) +{ + enum reset_type reset_method = RESET_TYPE_ALL; + int rc, rc2; + + efx_reset_down(efx, reset_method); + + /* Reset the chip immediately so that it is completely + * quiescent regardless of what any VF driver does. + */ + rc = efx_mcdi_reset(efx, reset_method); + if (rc) + goto out; + + tests->registers = + efx_farch_test_registers(efx, siena_register_tests, + ARRAY_SIZE(siena_register_tests)) + ? -1 : 1; + + rc = efx_mcdi_reset(efx, reset_method); +out: + rc2 = efx_reset_up(efx, reset_method, rc == 0); + return rc ? rc : rc2; +} + +/************************************************************************** + * + * PTP + * + ************************************************************************** + */ + +static void siena_ptp_write_host_time(struct efx_nic *efx, u32 host_time) +{ + _efx_writed(efx, cpu_to_le32(host_time), + FR_CZ_MC_TREG_SMEM + MC_SMEM_P0_PTP_TIME_OFST); +} + +static int siena_ptp_set_ts_config(struct efx_nic *efx, + struct hwtstamp_config *init) +{ + int rc; + + switch (init->rx_filter) { + case HWTSTAMP_FILTER_NONE: + /* if TX timestamping is still requested then leave PTP on */ + return efx_ptp_change_mode(efx, + init->tx_type != HWTSTAMP_TX_OFF, + efx_ptp_get_mode(efx)); + case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: + case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: + case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: + init->rx_filter = HWTSTAMP_FILTER_PTP_V1_L4_EVENT; + return efx_ptp_change_mode(efx, true, MC_CMD_PTP_MODE_V1); + case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: + case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: + case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: + init->rx_filter = HWTSTAMP_FILTER_PTP_V2_L4_EVENT; + rc = efx_ptp_change_mode(efx, true, + MC_CMD_PTP_MODE_V2_ENHANCED); + /* bug 33070 - old versions of the firmware do not support the + * improved UUID filtering option. Similarly old versions of the + * application do not expect it to be enabled. If the firmware + * does not accept the enhanced mode, fall back to the standard + * PTP v2 UUID filtering. */ + if (rc != 0) + rc = efx_ptp_change_mode(efx, true, MC_CMD_PTP_MODE_V2); + return rc; + default: + return -ERANGE; + } +} + +/************************************************************************** + * + * Device reset + * + ************************************************************************** + */ + +static int siena_map_reset_flags(u32 *flags) +{ + enum { + SIENA_RESET_PORT = (ETH_RESET_DMA | ETH_RESET_FILTER | + ETH_RESET_OFFLOAD | ETH_RESET_MAC | + ETH_RESET_PHY), + SIENA_RESET_MC = (SIENA_RESET_PORT | + ETH_RESET_MGMT << ETH_RESET_SHARED_SHIFT), + }; + + if ((*flags & SIENA_RESET_MC) == SIENA_RESET_MC) { + *flags &= ~SIENA_RESET_MC; + return RESET_TYPE_WORLD; + } + + if ((*flags & SIENA_RESET_PORT) == SIENA_RESET_PORT) { + *flags &= ~SIENA_RESET_PORT; + return RESET_TYPE_ALL; + } + + /* no invisible reset implemented */ + + return -EINVAL; +} + +#ifdef CONFIG_EEH +/* When a PCI device is isolated from the bus, a subsequent MMIO read is + * required for the kernel EEH mechanisms to notice. As the Solarflare driver + * was written to minimise MMIO read (for latency) then a periodic call to check + * the EEH status of the device is required so that device recovery can happen + * in a timely fashion. + */ +static void siena_monitor(struct efx_nic *efx) +{ + struct eeh_dev *eehdev = pci_dev_to_eeh_dev(efx->pci_dev); + + eeh_dev_check_failure(eehdev); +} +#endif + +static int siena_probe_nvconfig(struct efx_nic *efx) +{ + u32 caps = 0; + int rc; + + rc = efx_mcdi_get_board_cfg(efx, efx->net_dev->perm_addr, NULL, &caps); + + efx->timer_quantum_ns = + (caps & (1 << MC_CMD_CAPABILITIES_TURBO_ACTIVE_LBN)) ? + 3072 : 6144; /* 768 cycles */ + return rc; +} + +static int siena_dimension_resources(struct efx_nic *efx) +{ + /* Each port has a small block of internal SRAM dedicated to + * the buffer table and descriptor caches. In theory we can + * map both blocks to one port, but we don't. + */ + efx_farch_dimension_resources(efx, FR_CZ_BUF_FULL_TBL_ROWS / 2); + return 0; +} + +static unsigned int siena_mem_map_size(struct efx_nic *efx) +{ + return FR_CZ_MC_TREG_SMEM + + FR_CZ_MC_TREG_SMEM_STEP * FR_CZ_MC_TREG_SMEM_ROWS; +} + +static int siena_probe_nic(struct efx_nic *efx) +{ + struct siena_nic_data *nic_data; + efx_oword_t reg; + int rc; + + /* Allocate storage for hardware specific data */ + nic_data = kzalloc(sizeof(struct siena_nic_data), GFP_KERNEL); + if (!nic_data) + return -ENOMEM; + nic_data->efx = efx; + efx->nic_data = nic_data; + + if (efx_farch_fpga_ver(efx) != 0) { + netif_err(efx, probe, efx->net_dev, + "Siena FPGA not supported\n"); + rc = -ENODEV; + goto fail1; + } + + efx->max_channels = EFX_MAX_CHANNELS; + + efx_reado(efx, ®, FR_AZ_CS_DEBUG); + efx->port_num = EFX_OWORD_FIELD(reg, FRF_CZ_CS_PORT_NUM) - 1; + + rc = efx_mcdi_init(efx); + if (rc) + goto fail1; + + /* Now we can reset the NIC */ + rc = efx_mcdi_reset(efx, RESET_TYPE_ALL); + if (rc) { + netif_err(efx, probe, efx->net_dev, "failed to reset NIC\n"); + goto fail3; + } + + siena_init_wol(efx); + + /* Allocate memory for INT_KER */ + 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); + + netif_dbg(efx, probe, efx->net_dev, + "INT_KER at %llx (virt %p phys %llx)\n", + (unsigned long long)efx->irq_status.dma_addr, + efx->irq_status.addr, + (unsigned long long)virt_to_phys(efx->irq_status.addr)); + + /* Read in the non-volatile configuration */ + rc = siena_probe_nvconfig(efx); + if (rc == -EINVAL) { + netif_err(efx, probe, efx->net_dev, + "NVRAM is invalid therefore using defaults\n"); + efx->phy_type = PHY_TYPE_NONE; + efx->mdio.prtad = MDIO_PRTAD_NONE; + } else if (rc) { + goto fail5; + } + + rc = efx_mcdi_mon_probe(efx); + if (rc) + goto fail5; + + efx_siena_sriov_probe(efx); + efx_ptp_defer_probe_with_channel(efx); + + return 0; + +fail5: + efx_nic_free_buffer(efx, &efx->irq_status); +fail4: +fail3: + efx_mcdi_fini(efx); +fail1: + kfree(efx->nic_data); + return rc; +} + +static void siena_rx_push_rss_config(struct efx_nic *efx) +{ + efx_oword_t temp; + + /* Set hash key for IPv4 */ + memcpy(&temp, efx->rx_hash_key, sizeof(temp)); + efx_writeo(efx, &temp, FR_BZ_RX_RSS_TKEY); + + /* Enable IPv6 RSS */ + BUILD_BUG_ON(sizeof(efx->rx_hash_key) < + 2 * sizeof(temp) + FRF_CZ_RX_RSS_IPV6_TKEY_HI_WIDTH / 8 || + FRF_CZ_RX_RSS_IPV6_TKEY_HI_LBN != 0); + memcpy(&temp, efx->rx_hash_key, sizeof(temp)); + efx_writeo(efx, &temp, FR_CZ_RX_RSS_IPV6_REG1); + memcpy(&temp, efx->rx_hash_key + sizeof(temp), sizeof(temp)); + efx_writeo(efx, &temp, FR_CZ_RX_RSS_IPV6_REG2); + EFX_POPULATE_OWORD_2(temp, FRF_CZ_RX_RSS_IPV6_THASH_ENABLE, 1, + FRF_CZ_RX_RSS_IPV6_IP_THASH_ENABLE, 1); + memcpy(&temp, efx->rx_hash_key + 2 * sizeof(temp), + FRF_CZ_RX_RSS_IPV6_TKEY_HI_WIDTH / 8); + efx_writeo(efx, &temp, FR_CZ_RX_RSS_IPV6_REG3); + + efx_farch_rx_push_indir_table(efx); +} + +/* This call performs hardware-specific global initialisation, such as + * defining the descriptor cache sizes and number of RSS channels. + * It does not set up any buffers, descriptor rings or event queues. + */ +static int siena_init_nic(struct efx_nic *efx) +{ + efx_oword_t temp; + int rc; + + /* Recover from a failed assertion post-reset */ + rc = efx_mcdi_handle_assertion(efx); + if (rc) + return rc; + + /* Squash TX of packets of 16 bytes or less */ + efx_reado(efx, &temp, FR_AZ_TX_RESERVED); + EFX_SET_OWORD_FIELD(temp, FRF_BZ_TX_FLUSH_MIN_LEN_EN, 1); + efx_writeo(efx, &temp, FR_AZ_TX_RESERVED); + + /* Do not enable TX_NO_EOP_DISC_EN, since it limits packets to 16 + * descriptors (which is bad). + */ + efx_reado(efx, &temp, FR_AZ_TX_CFG); + EFX_SET_OWORD_FIELD(temp, FRF_AZ_TX_NO_EOP_DISC_EN, 0); + EFX_SET_OWORD_FIELD(temp, FRF_CZ_TX_FILTER_EN_BIT, 1); + efx_writeo(efx, &temp, FR_AZ_TX_CFG); + + efx_reado(efx, &temp, FR_AZ_RX_CFG); + EFX_SET_OWORD_FIELD(temp, FRF_BZ_RX_DESC_PUSH_EN, 0); + EFX_SET_OWORD_FIELD(temp, FRF_BZ_RX_INGR_EN, 1); + /* Enable hash insertion. This is broken for the 'Falcon' hash + * if IPv6 hashing is also enabled, so also select Toeplitz + * TCP/IPv4 and IPv4 hashes. */ + EFX_SET_OWORD_FIELD(temp, FRF_BZ_RX_HASH_INSRT_HDR, 1); + EFX_SET_OWORD_FIELD(temp, FRF_BZ_RX_HASH_ALG, 1); + EFX_SET_OWORD_FIELD(temp, FRF_BZ_RX_IP_HASH, 1); + EFX_SET_OWORD_FIELD(temp, FRF_BZ_RX_USR_BUF_SIZE, + EFX_RX_USR_BUF_SIZE >> 5); + efx_writeo(efx, &temp, FR_AZ_RX_CFG); + + siena_rx_push_rss_config(efx); + + /* Enable event logging */ + rc = efx_mcdi_log_ctrl(efx, true, false, 0); + if (rc) + return rc; + + /* Set destination of both TX and RX Flush events */ + EFX_POPULATE_OWORD_1(temp, FRF_BZ_FLS_EVQ_ID, 0); + efx_writeo(efx, &temp, FR_BZ_DP_CTRL); + + EFX_POPULATE_OWORD_1(temp, FRF_CZ_USREV_DIS, 1); + efx_writeo(efx, &temp, FR_CZ_USR_EV_CFG); + + efx_farch_init_common(efx); + return 0; +} + +static void siena_remove_nic(struct efx_nic *efx) +{ + efx_mcdi_mon_remove(efx); + + efx_nic_free_buffer(efx, &efx->irq_status); + + efx_mcdi_reset(efx, RESET_TYPE_ALL); + + efx_mcdi_fini(efx); + + /* Tear down the private nic state */ + kfree(efx->nic_data); + efx->nic_data = NULL; +} + +#define SIENA_DMA_STAT(ext_name, mcdi_name) \ + [SIENA_STAT_ ## ext_name] = \ + { #ext_name, 64, 8 * MC_CMD_MAC_ ## mcdi_name } +#define SIENA_OTHER_STAT(ext_name) \ + [SIENA_STAT_ ## ext_name] = { #ext_name, 0, 0 } +#define GENERIC_SW_STAT(ext_name) \ + [GENERIC_STAT_ ## ext_name] = { #ext_name, 0, 0 } + +static const struct efx_hw_stat_desc siena_stat_desc[SIENA_STAT_COUNT] = { + SIENA_DMA_STAT(tx_bytes, TX_BYTES), + SIENA_OTHER_STAT(tx_good_bytes), + SIENA_DMA_STAT(tx_bad_bytes, TX_BAD_BYTES), + SIENA_DMA_STAT(tx_packets, TX_PKTS), + SIENA_DMA_STAT(tx_bad, TX_BAD_FCS_PKTS), + SIENA_DMA_STAT(tx_pause, TX_PAUSE_PKTS), + SIENA_DMA_STAT(tx_control, TX_CONTROL_PKTS), + SIENA_DMA_STAT(tx_unicast, TX_UNICAST_PKTS), + SIENA_DMA_STAT(tx_multicast, TX_MULTICAST_PKTS), + SIENA_DMA_STAT(tx_broadcast, TX_BROADCAST_PKTS), + SIENA_DMA_STAT(tx_lt64, TX_LT64_PKTS), + SIENA_DMA_STAT(tx_64, TX_64_PKTS), + SIENA_DMA_STAT(tx_65_to_127, TX_65_TO_127_PKTS), + SIENA_DMA_STAT(tx_128_to_255, TX_128_TO_255_PKTS), + SIENA_DMA_STAT(tx_256_to_511, TX_256_TO_511_PKTS), + SIENA_DMA_STAT(tx_512_to_1023, TX_512_TO_1023_PKTS), + SIENA_DMA_STAT(tx_1024_to_15xx, TX_1024_TO_15XX_PKTS), + SIENA_DMA_STAT(tx_15xx_to_jumbo, TX_15XX_TO_JUMBO_PKTS), + SIENA_DMA_STAT(tx_gtjumbo, TX_GTJUMBO_PKTS), + SIENA_OTHER_STAT(tx_collision), + SIENA_DMA_STAT(tx_single_collision, TX_SINGLE_COLLISION_PKTS), + SIENA_DMA_STAT(tx_multiple_collision, TX_MULTIPLE_COLLISION_PKTS), + SIENA_DMA_STAT(tx_excessive_collision, TX_EXCESSIVE_COLLISION_PKTS), + SIENA_DMA_STAT(tx_deferred, TX_DEFERRED_PKTS), + SIENA_DMA_STAT(tx_late_collision, TX_LATE_COLLISION_PKTS), + SIENA_DMA_STAT(tx_excessive_deferred, TX_EXCESSIVE_DEFERRED_PKTS), + SIENA_DMA_STAT(tx_non_tcpudp, TX_NON_TCPUDP_PKTS), + SIENA_DMA_STAT(tx_mac_src_error, TX_MAC_SRC_ERR_PKTS), + SIENA_DMA_STAT(tx_ip_src_error, TX_IP_SRC_ERR_PKTS), + SIENA_DMA_STAT(rx_bytes, RX_BYTES), + SIENA_OTHER_STAT(rx_good_bytes), + SIENA_DMA_STAT(rx_bad_bytes, RX_BAD_BYTES), + SIENA_DMA_STAT(rx_packets, RX_PKTS), + SIENA_DMA_STAT(rx_good, RX_GOOD_PKTS), + SIENA_DMA_STAT(rx_bad, RX_BAD_FCS_PKTS), + SIENA_DMA_STAT(rx_pause, RX_PAUSE_PKTS), + SIENA_DMA_STAT(rx_control, RX_CONTROL_PKTS), + SIENA_DMA_STAT(rx_unicast, RX_UNICAST_PKTS), + SIENA_DMA_STAT(rx_multicast, RX_MULTICAST_PKTS), + SIENA_DMA_STAT(rx_broadcast, RX_BROADCAST_PKTS), + SIENA_DMA_STAT(rx_lt64, RX_UNDERSIZE_PKTS), + SIENA_DMA_STAT(rx_64, RX_64_PKTS), + SIENA_DMA_STAT(rx_65_to_127, RX_65_TO_127_PKTS), + SIENA_DMA_STAT(rx_128_to_255, RX_128_TO_255_PKTS), + SIENA_DMA_STAT(rx_256_to_511, RX_256_TO_511_PKTS), + SIENA_DMA_STAT(rx_512_to_1023, RX_512_TO_1023_PKTS), + SIENA_DMA_STAT(rx_1024_to_15xx, RX_1024_TO_15XX_PKTS), + SIENA_DMA_STAT(rx_15xx_to_jumbo, RX_15XX_TO_JUMBO_PKTS), + SIENA_DMA_STAT(rx_gtjumbo, RX_GTJUMBO_PKTS), + SIENA_DMA_STAT(rx_bad_gtjumbo, RX_JABBER_PKTS), + SIENA_DMA_STAT(rx_overflow, RX_OVERFLOW_PKTS), + SIENA_DMA_STAT(rx_false_carrier, RX_FALSE_CARRIER_PKTS), + SIENA_DMA_STAT(rx_symbol_error, RX_SYMBOL_ERROR_PKTS), + SIENA_DMA_STAT(rx_align_error, RX_ALIGN_ERROR_PKTS), + SIENA_DMA_STAT(rx_length_error, RX_LENGTH_ERROR_PKTS), + SIENA_DMA_STAT(rx_internal_error, RX_INTERNAL_ERROR_PKTS), + SIENA_DMA_STAT(rx_nodesc_drop_cnt, RX_NODESC_DROPS), + GENERIC_SW_STAT(rx_nodesc_trunc), + GENERIC_SW_STAT(rx_noskb_drops), +}; +static const unsigned long siena_stat_mask[] = { + [0 ... BITS_TO_LONGS(SIENA_STAT_COUNT) - 1] = ~0UL, +}; + +static size_t siena_describe_nic_stats(struct efx_nic *efx, u8 *names) +{ + return efx_nic_describe_stats(siena_stat_desc, SIENA_STAT_COUNT, + siena_stat_mask, names); +} + +static int siena_try_update_nic_stats(struct efx_nic *efx) +{ + struct siena_nic_data *nic_data = efx->nic_data; + u64 *stats = nic_data->stats; + __le64 *dma_stats; + __le64 generation_start, generation_end; + + dma_stats = efx->stats_buffer.addr; + + generation_end = dma_stats[MC_CMD_MAC_GENERATION_END]; + if (generation_end == EFX_MC_STATS_GENERATION_INVALID) + return 0; + rmb(); + efx_nic_update_stats(siena_stat_desc, SIENA_STAT_COUNT, siena_stat_mask, + stats, efx->stats_buffer.addr, false); + rmb(); + generation_start = dma_stats[MC_CMD_MAC_GENERATION_START]; + if (generation_end != generation_start) + return -EAGAIN; + + /* Update derived statistics */ + efx_nic_fix_nodesc_drop_stat(efx, + &stats[SIENA_STAT_rx_nodesc_drop_cnt]); + efx_update_diff_stat(&stats[SIENA_STAT_tx_good_bytes], + stats[SIENA_STAT_tx_bytes] - + stats[SIENA_STAT_tx_bad_bytes]); + stats[SIENA_STAT_tx_collision] = + stats[SIENA_STAT_tx_single_collision] + + stats[SIENA_STAT_tx_multiple_collision] + + stats[SIENA_STAT_tx_excessive_collision] + + stats[SIENA_STAT_tx_late_collision]; + efx_update_diff_stat(&stats[SIENA_STAT_rx_good_bytes], + stats[SIENA_STAT_rx_bytes] - + stats[SIENA_STAT_rx_bad_bytes]); + efx_update_sw_stats(efx, stats); + return 0; +} + +static size_t siena_update_nic_stats(struct efx_nic *efx, u64 *full_stats, + struct rtnl_link_stats64 *core_stats) +{ + struct siena_nic_data *nic_data = efx->nic_data; + u64 *stats = nic_data->stats; + int retry; + + /* If we're unlucky enough to read statistics wduring the DMA, wait + * up to 10ms for it to finish (typically takes <500us) */ + for (retry = 0; retry < 100; ++retry) { + if (siena_try_update_nic_stats(efx) == 0) + break; + udelay(100); + } + + if (full_stats) + memcpy(full_stats, stats, sizeof(u64) * SIENA_STAT_COUNT); + + if (core_stats) { + core_stats->rx_packets = stats[SIENA_STAT_rx_packets]; + core_stats->tx_packets = stats[SIENA_STAT_tx_packets]; + core_stats->rx_bytes = stats[SIENA_STAT_rx_bytes]; + core_stats->tx_bytes = stats[SIENA_STAT_tx_bytes]; + core_stats->rx_dropped = stats[SIENA_STAT_rx_nodesc_drop_cnt] + + stats[GENERIC_STAT_rx_nodesc_trunc] + + stats[GENERIC_STAT_rx_noskb_drops]; + core_stats->multicast = stats[SIENA_STAT_rx_multicast]; + core_stats->collisions = stats[SIENA_STAT_tx_collision]; + core_stats->rx_length_errors = + stats[SIENA_STAT_rx_gtjumbo] + + stats[SIENA_STAT_rx_length_error]; + core_stats->rx_crc_errors = stats[SIENA_STAT_rx_bad]; + core_stats->rx_frame_errors = stats[SIENA_STAT_rx_align_error]; + core_stats->rx_fifo_errors = stats[SIENA_STAT_rx_overflow]; + core_stats->tx_window_errors = + stats[SIENA_STAT_tx_late_collision]; + + core_stats->rx_errors = (core_stats->rx_length_errors + + core_stats->rx_crc_errors + + core_stats->rx_frame_errors + + stats[SIENA_STAT_rx_symbol_error]); + core_stats->tx_errors = (core_stats->tx_window_errors + + stats[SIENA_STAT_tx_bad]); + } + + return SIENA_STAT_COUNT; +} + +static int siena_mac_reconfigure(struct efx_nic *efx) +{ + MCDI_DECLARE_BUF(inbuf, MC_CMD_SET_MCAST_HASH_IN_LEN); + int rc; + + BUILD_BUG_ON(MC_CMD_SET_MCAST_HASH_IN_LEN != + MC_CMD_SET_MCAST_HASH_IN_HASH0_OFST + + sizeof(efx->multicast_hash)); + + efx_farch_filter_sync_rx_mode(efx); + + WARN_ON(!mutex_is_locked(&efx->mac_lock)); + + rc = efx_mcdi_set_mac(efx); + if (rc != 0) + return rc; + + memcpy(MCDI_PTR(inbuf, SET_MCAST_HASH_IN_HASH0), + efx->multicast_hash.byte, sizeof(efx->multicast_hash)); + return efx_mcdi_rpc(efx, MC_CMD_SET_MCAST_HASH, + inbuf, sizeof(inbuf), NULL, 0, NULL); +} + +/************************************************************************** + * + * Wake on LAN + * + ************************************************************************** + */ + +static void siena_get_wol(struct efx_nic *efx, struct ethtool_wolinfo *wol) +{ + struct siena_nic_data *nic_data = efx->nic_data; + + wol->supported = WAKE_MAGIC; + if (nic_data->wol_filter_id != -1) + wol->wolopts = WAKE_MAGIC; + else + wol->wolopts = 0; + memset(&wol->sopass, 0, sizeof(wol->sopass)); +} + + +static int siena_set_wol(struct efx_nic *efx, u32 type) +{ + struct siena_nic_data *nic_data = efx->nic_data; + int rc; + + if (type & ~WAKE_MAGIC) + return -EINVAL; + + if (type & WAKE_MAGIC) { + if (nic_data->wol_filter_id != -1) + efx_mcdi_wol_filter_remove(efx, + nic_data->wol_filter_id); + rc = efx_mcdi_wol_filter_set_magic(efx, efx->net_dev->dev_addr, + &nic_data->wol_filter_id); + if (rc) + goto fail; + + pci_wake_from_d3(efx->pci_dev, true); + } else { + rc = efx_mcdi_wol_filter_reset(efx); + nic_data->wol_filter_id = -1; + pci_wake_from_d3(efx->pci_dev, false); + if (rc) + goto fail; + } + + return 0; + fail: + netif_err(efx, hw, efx->net_dev, "%s failed: type=%d rc=%d\n", + __func__, type, rc); + return rc; +} + + +static void siena_init_wol(struct efx_nic *efx) +{ + struct siena_nic_data *nic_data = efx->nic_data; + int rc; + + rc = efx_mcdi_wol_filter_get_magic(efx, &nic_data->wol_filter_id); + + if (rc != 0) { + /* If it failed, attempt to get into a synchronised + * state with MC by resetting any set WoL filters */ + efx_mcdi_wol_filter_reset(efx); + nic_data->wol_filter_id = -1; + } else if (nic_data->wol_filter_id != -1) { + pci_wake_from_d3(efx->pci_dev, true); + } +} + +/************************************************************************** + * + * MCDI + * + ************************************************************************** + */ + +#define MCDI_PDU(efx) \ + (efx_port_num(efx) ? MC_SMEM_P1_PDU_OFST : MC_SMEM_P0_PDU_OFST) +#define MCDI_DOORBELL(efx) \ + (efx_port_num(efx) ? MC_SMEM_P1_DOORBELL_OFST : MC_SMEM_P0_DOORBELL_OFST) +#define MCDI_STATUS(efx) \ + (efx_port_num(efx) ? MC_SMEM_P1_STATUS_OFST : MC_SMEM_P0_STATUS_OFST) + +static void siena_mcdi_request(struct efx_nic *efx, + const efx_dword_t *hdr, size_t hdr_len, + const efx_dword_t *sdu, size_t sdu_len) +{ + unsigned pdu = FR_CZ_MC_TREG_SMEM + MCDI_PDU(efx); + unsigned doorbell = FR_CZ_MC_TREG_SMEM + MCDI_DOORBELL(efx); + unsigned int i; + unsigned int inlen_dw = DIV_ROUND_UP(sdu_len, 4); + + EFX_BUG_ON_PARANOID(hdr_len != 4); + + efx_writed(efx, hdr, pdu); + + for (i = 0; i < inlen_dw; i++) + efx_writed(efx, &sdu[i], pdu + hdr_len + 4 * i); + + /* Ensure the request is written out before the doorbell */ + wmb(); + + /* ring the doorbell with a distinctive value */ + _efx_writed(efx, (__force __le32) 0x45789abc, doorbell); +} + +static bool siena_mcdi_poll_response(struct efx_nic *efx) +{ + unsigned int pdu = FR_CZ_MC_TREG_SMEM + MCDI_PDU(efx); + efx_dword_t hdr; + + efx_readd(efx, &hdr, pdu); + + /* All 1's indicates that shared memory is in reset (and is + * not a valid hdr). Wait for it to come out reset before + * completing the command + */ + return EFX_DWORD_FIELD(hdr, EFX_DWORD_0) != 0xffffffff && + EFX_DWORD_FIELD(hdr, MCDI_HEADER_RESPONSE); +} + +static void siena_mcdi_read_response(struct efx_nic *efx, efx_dword_t *outbuf, + size_t offset, size_t outlen) +{ + unsigned int pdu = FR_CZ_MC_TREG_SMEM + MCDI_PDU(efx); + unsigned int outlen_dw = DIV_ROUND_UP(outlen, 4); + int i; + + for (i = 0; i < outlen_dw; i++) + efx_readd(efx, &outbuf[i], pdu + offset + 4 * i); +} + +static int siena_mcdi_poll_reboot(struct efx_nic *efx) +{ + struct siena_nic_data *nic_data = efx->nic_data; + unsigned int addr = FR_CZ_MC_TREG_SMEM + MCDI_STATUS(efx); + efx_dword_t reg; + u32 value; + + efx_readd(efx, ®, addr); + value = EFX_DWORD_FIELD(reg, EFX_DWORD_0); + + if (value == 0) + return 0; + + EFX_ZERO_DWORD(reg); + efx_writed(efx, ®, addr); + + /* MAC statistics have been cleared on the NIC; clear the local + * copies that we update with efx_update_diff_stat(). + */ + nic_data->stats[SIENA_STAT_tx_good_bytes] = 0; + nic_data->stats[SIENA_STAT_rx_good_bytes] = 0; + + if (value == MC_STATUS_DWORD_ASSERT) + return -EINTR; + else + return -EIO; +} + +/************************************************************************** + * + * MTD + * + ************************************************************************** + */ + +#ifdef CONFIG_SFC_MTD + +struct siena_nvram_type_info { + int port; + const char *name; +}; + +static const struct siena_nvram_type_info siena_nvram_types[] = { + [MC_CMD_NVRAM_TYPE_DISABLED_CALLISTO] = { 0, "sfc_dummy_phy" }, + [MC_CMD_NVRAM_TYPE_MC_FW] = { 0, "sfc_mcfw" }, + [MC_CMD_NVRAM_TYPE_MC_FW_BACKUP] = { 0, "sfc_mcfw_backup" }, + [MC_CMD_NVRAM_TYPE_STATIC_CFG_PORT0] = { 0, "sfc_static_cfg" }, + [MC_CMD_NVRAM_TYPE_STATIC_CFG_PORT1] = { 1, "sfc_static_cfg" }, + [MC_CMD_NVRAM_TYPE_DYNAMIC_CFG_PORT0] = { 0, "sfc_dynamic_cfg" }, + [MC_CMD_NVRAM_TYPE_DYNAMIC_CFG_PORT1] = { 1, "sfc_dynamic_cfg" }, + [MC_CMD_NVRAM_TYPE_EXP_ROM] = { 0, "sfc_exp_rom" }, + [MC_CMD_NVRAM_TYPE_EXP_ROM_CFG_PORT0] = { 0, "sfc_exp_rom_cfg" }, + [MC_CMD_NVRAM_TYPE_EXP_ROM_CFG_PORT1] = { 1, "sfc_exp_rom_cfg" }, + [MC_CMD_NVRAM_TYPE_PHY_PORT0] = { 0, "sfc_phy_fw" }, + [MC_CMD_NVRAM_TYPE_PHY_PORT1] = { 1, "sfc_phy_fw" }, + [MC_CMD_NVRAM_TYPE_FPGA] = { 0, "sfc_fpga" }, +}; + +static int siena_mtd_probe_partition(struct efx_nic *efx, + struct efx_mcdi_mtd_partition *part, + unsigned int type) +{ + const struct siena_nvram_type_info *info; + size_t size, erase_size; + bool protected; + int rc; + + if (type >= ARRAY_SIZE(siena_nvram_types) || + siena_nvram_types[type].name == NULL) + return -ENODEV; + + info = &siena_nvram_types[type]; + + if (info->port != efx_port_num(efx)) + return -ENODEV; + + rc = efx_mcdi_nvram_info(efx, type, &size, &erase_size, &protected); + if (rc) + return rc; + if (protected) + return -ENODEV; /* hide it */ + + part->nvram_type = type; + part->common.dev_type_name = "Siena NVRAM manager"; + part->common.type_name = info->name; + + part->common.mtd.type = MTD_NORFLASH; + part->common.mtd.flags = MTD_CAP_NORFLASH; + part->common.mtd.size = size; + part->common.mtd.erasesize = erase_size; + + return 0; +} + +static int siena_mtd_get_fw_subtypes(struct efx_nic *efx, + struct efx_mcdi_mtd_partition *parts, + size_t n_parts) +{ + uint16_t fw_subtype_list[ + MC_CMD_GET_BOARD_CFG_OUT_FW_SUBTYPE_LIST_MAXNUM]; + size_t i; + int rc; + + rc = efx_mcdi_get_board_cfg(efx, NULL, fw_subtype_list, NULL); + if (rc) + return rc; + + for (i = 0; i < n_parts; i++) + parts[i].fw_subtype = fw_subtype_list[parts[i].nvram_type]; + + return 0; +} + +static int siena_mtd_probe(struct efx_nic *efx) +{ + struct efx_mcdi_mtd_partition *parts; + u32 nvram_types; + unsigned int type; + size_t n_parts; + int rc; + + ASSERT_RTNL(); + + rc = efx_mcdi_nvram_types(efx, &nvram_types); + if (rc) + return rc; + + parts = kcalloc(hweight32(nvram_types), sizeof(*parts), GFP_KERNEL); + if (!parts) + return -ENOMEM; + + type = 0; + n_parts = 0; + + while (nvram_types != 0) { + if (nvram_types & 1) { + rc = siena_mtd_probe_partition(efx, &parts[n_parts], + type); + if (rc == 0) + n_parts++; + else if (rc != -ENODEV) + goto fail; + } + type++; + nvram_types >>= 1; + } + + rc = siena_mtd_get_fw_subtypes(efx, parts, n_parts); + if (rc) + goto fail; + + rc = efx_mtd_add(efx, &parts[0].common, n_parts, sizeof(*parts)); +fail: + if (rc) + kfree(parts); + return rc; +} + +#endif /* CONFIG_SFC_MTD */ + +/************************************************************************** + * + * Revision-dependent attributes used by efx.c and nic.c + * + ************************************************************************** + */ + +const struct efx_nic_type siena_a0_nic_type = { + .mem_map_size = siena_mem_map_size, + .probe = siena_probe_nic, + .remove = siena_remove_nic, + .init = siena_init_nic, + .dimension_resources = siena_dimension_resources, + .fini = efx_port_dummy_op_void, +#ifdef CONFIG_EEH + .monitor = siena_monitor, +#else + .monitor = NULL, +#endif + .map_reset_reason = efx_mcdi_map_reset_reason, + .map_reset_flags = siena_map_reset_flags, + .reset = efx_mcdi_reset, + .probe_port = efx_mcdi_port_probe, + .remove_port = efx_mcdi_port_remove, + .fini_dmaq = efx_farch_fini_dmaq, + .prepare_flush = siena_prepare_flush, + .finish_flush = siena_finish_flush, + .prepare_flr = efx_port_dummy_op_void, + .finish_flr = efx_farch_finish_flr, + .describe_stats = siena_describe_nic_stats, + .update_stats = siena_update_nic_stats, + .start_stats = efx_mcdi_mac_start_stats, + .pull_stats = efx_mcdi_mac_pull_stats, + .stop_stats = efx_mcdi_mac_stop_stats, + .set_id_led = efx_mcdi_set_id_led, + .push_irq_moderation = siena_push_irq_moderation, + .reconfigure_mac = siena_mac_reconfigure, + .check_mac_fault = efx_mcdi_mac_check_fault, + .reconfigure_port = efx_mcdi_port_reconfigure, + .get_wol = siena_get_wol, + .set_wol = siena_set_wol, + .resume_wol = siena_init_wol, + .test_chip = siena_test_chip, + .test_nvram = efx_mcdi_nvram_test_all, + .mcdi_request = siena_mcdi_request, + .mcdi_poll_response = siena_mcdi_poll_response, + .mcdi_read_response = siena_mcdi_read_response, + .mcdi_poll_reboot = siena_mcdi_poll_reboot, + .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_rss_config = siena_rx_push_rss_config, + .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 = siena_mtd_probe, + .mtd_rename = efx_mcdi_mtd_rename, + .mtd_read = efx_mcdi_mtd_read, + .mtd_erase = efx_mcdi_mtd_erase, + .mtd_write = efx_mcdi_mtd_write, + .mtd_sync = efx_mcdi_mtd_sync, +#endif + .ptp_write_host_time = siena_ptp_write_host_time, + .ptp_set_ts_config = siena_ptp_set_ts_config, + .sriov_init = efx_siena_sriov_init, + .sriov_fini = efx_siena_sriov_fini, + .sriov_mac_address_changed = efx_siena_sriov_mac_address_changed, + .sriov_wanted = efx_siena_sriov_wanted, + .sriov_reset = efx_siena_sriov_reset, + + .revision = EFX_REV_SIENA_A0, + .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_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, + .timer_period_max = 1 << FRF_CZ_TC_TIMER_VAL_WIDTH, + .offload_features = (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | + NETIF_F_RXHASH | NETIF_F_NTUPLE), + .mcdi_max_ver = 1, + .max_rx_ip_filters = FR_BZ_RX_FILTER_TBL0_ROWS, + .hwtstamp_filters = (1 << HWTSTAMP_FILTER_NONE | + 1 << HWTSTAMP_FILTER_PTP_V1_L4_EVENT | + 1 << HWTSTAMP_FILTER_PTP_V1_L4_SYNC | + 1 << HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ | + 1 << HWTSTAMP_FILTER_PTP_V2_L4_EVENT | + 1 << HWTSTAMP_FILTER_PTP_V2_L4_SYNC | + 1 << HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ), +}; 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