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linux/drivers/net/ethernet/sfc/siena.c

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// SPDX-License-Identifier: GPL-2.0-only
/****************************************************************************
* Driver for Solarflare network controllers and boards
* Copyright 2005-2006 Fen Systems Ltd.
* Copyright 2006-2013 Solarflare Communications Inc.
*/
#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 "workarounds.h"
#include "mcdi.h"
#include "mcdi_pcol.h"
#include "selftest.h"
#include "siena_sriov.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)
{
struct efx_nic *efx = channel->efx;
efx_dword_t timer_cmd;
if (channel->irq_moderation_us) {
unsigned int ticks;
ticks = efx_usecs_to_ticks(efx, channel->irq_moderation_us);
EFX_POPULATE_DWORD_2(timer_cmd,
FRF_CZ_TC_TIMER_MODE,
FFE_CZ_TIMER_MODE_INT_HLDOFF,
FRF_CZ_TC_TIMER_VAL,
ticks - 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 */
efx->timer_max_ns = efx->type->timer_period_max *
efx->timer_quantum_ns;
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;
}
/* On all Falcon-architecture NICs, PFs use BAR 0 for I/O space and BAR 2(&3)
* for memory.
*/
static unsigned int siena_mem_bar(struct efx_nic *efx)
{
return 2;
}
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->max_tx_channels = EFX_MAX_CHANNELS;
efx_reado(efx, &reg, 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;
#ifdef CONFIG_SFC_SRIOV
efx_siena_sriov_probe(efx);
#endif
efx_ptp_defer_probe_with_channel(efx);
return 0;
fail5:
efx_nic_free_buffer(efx, &efx->irq_status);
fail4:
fail3:
efx_mcdi_detach(efx);
efx_mcdi_fini(efx);
fail1:
kfree(efx->nic_data);
return rc;
}
static int siena_rx_pull_rss_config(struct efx_nic *efx)
{
efx_oword_t temp;
/* Read from IPv6 RSS key as that's longer (the IPv4 key is just the
* first 128 bits of the same key, assuming it's been set by
* siena_rx_push_rss_config, below)
*/
efx_reado(efx, &temp, FR_CZ_RX_RSS_IPV6_REG1);
memcpy(efx->rss_context.rx_hash_key, &temp, sizeof(temp));
efx_reado(efx, &temp, FR_CZ_RX_RSS_IPV6_REG2);
memcpy(efx->rss_context.rx_hash_key + sizeof(temp), &temp, sizeof(temp));
efx_reado(efx, &temp, FR_CZ_RX_RSS_IPV6_REG3);
memcpy(efx->rss_context.rx_hash_key + 2 * sizeof(temp), &temp,
FRF_CZ_RX_RSS_IPV6_TKEY_HI_WIDTH / 8);
efx_farch_rx_pull_indir_table(efx);
return 0;
}
static int siena_rx_push_rss_config(struct efx_nic *efx, bool user,
const u32 *rx_indir_table, const u8 *key)
{
efx_oword_t temp;
/* Set hash key for IPv4 */
if (key)
memcpy(efx->rss_context.rx_hash_key, key, sizeof(temp));
memcpy(&temp, efx->rss_context.rx_hash_key, sizeof(temp));
efx_writeo(efx, &temp, FR_BZ_RX_RSS_TKEY);
/* Enable IPv6 RSS */
BUILD_BUG_ON(sizeof(efx->rss_context.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->rss_context.rx_hash_key, sizeof(temp));
efx_writeo(efx, &temp, FR_CZ_RX_RSS_IPV6_REG1);
memcpy(&temp, efx->rss_context.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->rss_context.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);
memcpy(efx->rss_context.rx_indir_table, rx_indir_table,
sizeof(efx->rss_context.rx_indir_table));
efx_farch_rx_push_indir_table(efx);
return 0;
}
/* 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, false, efx->rss_context.rx_indir_table, NULL);
efx->rss_context.context_id = 0; /* indicates RSS is active */
/* 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_detach(efx);
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[efx->num_mac_stats - 1];
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_WARN_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, &reg, addr);
value = EFX_DWORD_FIELD(reg, EFX_DWORD_0);
if (value == 0)
return 0;
EFX_ZERO_DWORD(reg);
efx_writed(efx, &reg, 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 = {
.is_vf = false,
.mem_bar = siena_mem_bar,
.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,
.tx_limit_len = efx_farch_tx_limit_len,
.rx_push_rss_config = siena_rx_push_rss_config,
.rx_pull_rss_config = siena_rx_pull_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_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,
#ifdef CONFIG_SFC_SRIOV
.sriov_configure = efx_siena_sriov_configure,
.sriov_init = efx_siena_sriov_init,
.sriov_fini = efx_siena_sriov_fini,
.sriov_wanted = efx_siena_sriov_wanted,
.sriov_reset = efx_siena_sriov_reset,
.sriov_flr = efx_siena_sriov_flr,
.sriov_set_vf_mac = efx_siena_sriov_set_vf_mac,
.sriov_set_vf_vlan = efx_siena_sriov_set_vf_vlan,
.sriov_set_vf_spoofchk = efx_siena_sriov_set_vf_spoofchk,
.sriov_get_vf_config = efx_siena_sriov_get_vf_config,
.vswitching_probe = efx_port_dummy_op_int,
.vswitching_restore = efx_port_dummy_op_int,
.vswitching_remove = efx_port_dummy_op_void,
.set_mac_address = efx_siena_sriov_mac_address_changed,
#endif
.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,
.option_descriptors = false,
.min_interrupt_mode = EFX_INT_MODE_LEGACY,
.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_V2_L4_EVENT),
.rx_hash_key_size = 16,
};
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