diff options
Diffstat (limited to 'drivers/net/sfc/tenxpress.c')
| -rw-r--r-- | drivers/net/sfc/tenxpress.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/drivers/net/sfc/tenxpress.c b/drivers/net/sfc/tenxpress.c index d8df031c711..b1cd6deec01 100644 --- a/drivers/net/sfc/tenxpress.c +++ b/drivers/net/sfc/tenxpress.c @@ -24,6 +24,11 @@ MDIO_MMDREG_DEVS0_PCS | \ MDIO_MMDREG_DEVS0_PHYXS) +#define TENXPRESS_LOOPBACKS ((1 << LOOPBACK_PHYXS) | \ + (1 << LOOPBACK_PCS) | \ + (1 << LOOPBACK_PMAPMD) | \ + (1 << LOOPBACK_NETWORK)) + /* We complain if we fail to see the link partner as 10G capable this many * times in a row (must be > 1 as sampling the autoneg. registers is racy) */ @@ -72,6 +77,10 @@ #define PMA_PMD_BIST_RXD_LBN (1) #define PMA_PMD_BIST_AFE_LBN (0) +/* Special Software reset register */ +#define PMA_PMD_EXT_CTRL_REG 49152 +#define PMA_PMD_EXT_SSR_LBN 15 + #define BIST_MAX_DELAY (1000) #define BIST_POLL_DELAY (10) @@ -86,6 +95,11 @@ #define PCS_TEST_SELECT_REG 0xd807 /* PRM 10.5.8 */ #define CLK312_EN_LBN 3 +/* PHYXS registers */ +#define PHYXS_TEST1 (49162) +#define LOOPBACK_NEAR_LBN (8) +#define LOOPBACK_NEAR_WIDTH (1) + /* Boot status register */ #define PCS_BOOT_STATUS_REG (0xd000) #define PCS_BOOT_FATAL_ERR_LBN (0) @@ -106,7 +120,9 @@ MODULE_PARM_DESC(crc_error_reset_threshold, struct tenxpress_phy_data { enum tenxpress_state state; + enum efx_loopback_mode loopback_mode; atomic_t bad_crc_count; + int tx_disabled; int bad_lp_tries; }; @@ -227,6 +243,35 @@ static int tenxpress_phy_init(struct efx_nic *efx) return rc; } +static int tenxpress_special_reset(struct efx_nic *efx) +{ + int rc, reg; + + EFX_TRACE(efx, "%s\n", __func__); + + /* Initiate reset */ + reg = mdio_clause45_read(efx, efx->mii.phy_id, + MDIO_MMD_PMAPMD, PMA_PMD_EXT_CTRL_REG); + reg |= (1 << PMA_PMD_EXT_SSR_LBN); + mdio_clause45_write(efx, efx->mii.phy_id, MDIO_MMD_PMAPMD, + PMA_PMD_EXT_CTRL_REG, reg); + + msleep(200); + + /* Wait for the blocks to come out of reset */ + rc = mdio_clause45_wait_reset_mmds(efx, + TENXPRESS_REQUIRED_DEVS); + if (rc < 0) + return rc; + + /* Try and reconfigure the device */ + rc = tenxpress_init(efx); + if (rc < 0) + return rc; + + return 0; +} + static void tenxpress_set_bad_lp(struct efx_nic *efx, int bad_lp) { struct tenxpress_phy_data *pd = efx->phy_data; @@ -301,11 +346,46 @@ static int tenxpress_link_ok(struct efx_nic *efx, int check_lp) return ok; } +static void tenxpress_phyxs_loopback(struct efx_nic *efx) +{ + int phy_id = efx->mii.phy_id; + int ctrl1, ctrl2; + + ctrl1 = ctrl2 = mdio_clause45_read(efx, phy_id, MDIO_MMD_PHYXS, + PHYXS_TEST1); + if (efx->loopback_mode == LOOPBACK_PHYXS) + ctrl2 |= (1 << LOOPBACK_NEAR_LBN); + else + ctrl2 &= ~(1 << LOOPBACK_NEAR_LBN); + if (ctrl1 != ctrl2) + mdio_clause45_write(efx, phy_id, MDIO_MMD_PHYXS, + PHYXS_TEST1, ctrl2); +} + static void tenxpress_phy_reconfigure(struct efx_nic *efx) { + struct tenxpress_phy_data *phy_data = efx->phy_data; + int loop_change = LOOPBACK_OUT_OF(phy_data, efx, + TENXPRESS_LOOPBACKS); + if (!tenxpress_state_is(efx, TENXPRESS_STATUS_NORMAL)) return; + /* When coming out of transmit disable, coming out of low power + * mode, or moving out of any PHY internal loopback mode, + * perform a special software reset */ + if ((phy_data->tx_disabled && !efx->tx_disabled) || + loop_change) { + (void) tenxpress_special_reset(efx); + falcon_reset_xaui(efx); + } + + mdio_clause45_transmit_disable(efx); + mdio_clause45_phy_reconfigure(efx); + tenxpress_phyxs_loopback(efx); + + phy_data->tx_disabled = efx->tx_disabled; + phy_data->loopback_mode = efx->loopback_mode; efx->link_up = tenxpress_link_ok(efx, 0); efx->link_options = GM_LPA_10000FULL; } @@ -433,4 +513,5 @@ struct efx_phy_operations falcon_tenxpress_phy_ops = { .clear_interrupt = tenxpress_phy_clear_interrupt, .reset_xaui = tenxpress_reset_xaui, .mmds = TENXPRESS_REQUIRED_DEVS, + .loopbacks = TENXPRESS_LOOPBACKS, }; |