diff options
| -rw-r--r-- | drivers/net/ethernet/amd/xgbe/xgbe-common.h | 8 | ||||
| -rw-r--r-- | drivers/net/ethernet/amd/xgbe/xgbe-debugfs.c | 16 | ||||
| -rw-r--r-- | drivers/net/ethernet/amd/xgbe/xgbe-main.c | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/amd/xgbe/xgbe-mdio.c | 8 | ||||
| -rw-r--r-- | drivers/net/ethernet/amd/xgbe/xgbe-pci.c | 2 | ||||
| -rw-r--r-- | drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c | 125 | ||||
| -rw-r--r-- | drivers/net/ethernet/amd/xgbe/xgbe.h | 4 |
7 files changed, 160 insertions, 4 deletions
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-common.h b/drivers/net/ethernet/amd/xgbe/xgbe-common.h index 7ea72ef11a55..d272dc6984ac 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe-common.h +++ b/drivers/net/ethernet/amd/xgbe/xgbe-common.h @@ -1321,6 +1321,10 @@ #define MDIO_VEND2_AN_STAT 0x8002 #endif +#ifndef MDIO_VEND2_PMA_CDR_CONTROL +#define MDIO_VEND2_PMA_CDR_CONTROL 0x8056 +#endif + #ifndef MDIO_CTRL1_SPEED1G #define MDIO_CTRL1_SPEED1G (MDIO_CTRL1_SPEED10G & ~BMCR_SPEED100) #endif @@ -1369,6 +1373,10 @@ #define XGBE_AN_CL37_TX_CONFIG_MASK 0x08 #define XGBE_AN_CL37_MII_CTRL_8BIT 0x0100 +#define XGBE_PMA_CDR_TRACK_EN_MASK 0x01 +#define XGBE_PMA_CDR_TRACK_EN_OFF 0x00 +#define XGBE_PMA_CDR_TRACK_EN_ON 0x01 + /* Bit setting and getting macros * The get macro will extract the current bit field value from within * the variable diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-debugfs.c b/drivers/net/ethernet/amd/xgbe/xgbe-debugfs.c index 7d128be61310..b91143947ed2 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe-debugfs.c +++ b/drivers/net/ethernet/amd/xgbe/xgbe-debugfs.c @@ -519,6 +519,22 @@ void xgbe_debugfs_init(struct xgbe_prv_data *pdata) "debugfs_create_file failed\n"); } + if (pdata->vdata->an_cdr_workaround) { + pfile = debugfs_create_bool("an_cdr_workaround", 0600, + pdata->xgbe_debugfs, + &pdata->debugfs_an_cdr_workaround); + if (!pfile) + netdev_err(pdata->netdev, + "debugfs_create_bool failed\n"); + + pfile = debugfs_create_bool("an_cdr_track_early", 0600, + pdata->xgbe_debugfs, + &pdata->debugfs_an_cdr_track_early); + if (!pfile) + netdev_err(pdata->netdev, + "debugfs_create_bool failed\n"); + } + kfree(buf); } diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-main.c b/drivers/net/ethernet/amd/xgbe/xgbe-main.c index 795e556d4a3f..441d0973957b 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe-main.c +++ b/drivers/net/ethernet/amd/xgbe/xgbe-main.c @@ -349,6 +349,7 @@ int xgbe_config_netdev(struct xgbe_prv_data *pdata) XGMAC_SET_BITS(pdata->rss_options, MAC_RSSCR, UDP4TE, 1); /* Call MDIO/PHY initialization routine */ + pdata->debugfs_an_cdr_workaround = pdata->vdata->an_cdr_workaround; ret = pdata->phy_if.phy_init(pdata); if (ret) return ret; diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c b/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c index e3d361e242aa..1b45cd73a258 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c +++ b/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c @@ -432,6 +432,8 @@ static void xgbe_an73_disable(struct xgbe_prv_data *pdata) xgbe_an73_set(pdata, false, false); xgbe_an73_disable_interrupts(pdata); + pdata->an_start = 0; + netif_dbg(pdata, link, pdata->netdev, "CL73 AN disabled\n"); } @@ -511,11 +513,11 @@ static enum xgbe_an xgbe_an73_tx_training(struct xgbe_prv_data *pdata, XMDIO_WRITE(pdata, MDIO_MMD_PMAPMD, MDIO_PMA_10GBR_PMD_CTRL, reg); - if (pdata->phy_if.phy_impl.kr_training_post) - pdata->phy_if.phy_impl.kr_training_post(pdata); - netif_dbg(pdata, link, pdata->netdev, "KR training initiated\n"); + + if (pdata->phy_if.phy_impl.kr_training_post) + pdata->phy_if.phy_impl.kr_training_post(pdata); } return XGBE_AN_PAGE_RECEIVED; diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-pci.c b/drivers/net/ethernet/amd/xgbe/xgbe-pci.c index eb23f9ba1a9a..82d1f416ee2a 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe-pci.c +++ b/drivers/net/ethernet/amd/xgbe/xgbe-pci.c @@ -456,6 +456,7 @@ static const struct xgbe_version_data xgbe_v2a = { .irq_reissue_support = 1, .tx_desc_prefetch = 5, .rx_desc_prefetch = 5, + .an_cdr_workaround = 1, }; static const struct xgbe_version_data xgbe_v2b = { @@ -470,6 +471,7 @@ static const struct xgbe_version_data xgbe_v2b = { .irq_reissue_support = 1, .tx_desc_prefetch = 5, .rx_desc_prefetch = 5, + .an_cdr_workaround = 1, }; static const struct pci_device_id xgbe_pci_table[] = { diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c b/drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c index 3304a291aa96..b48efc04c4da 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c +++ b/drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c @@ -147,6 +147,14 @@ /* Rate-change complete wait/retry count */ #define XGBE_RATECHANGE_COUNT 500 +/* CDR delay values for KR support (in usec) */ +#define XGBE_CDR_DELAY_INIT 10000 +#define XGBE_CDR_DELAY_INC 10000 +#define XGBE_CDR_DELAY_MAX 100000 + +/* RRC frequency during link status check */ +#define XGBE_RRC_FREQUENCY 10 + enum xgbe_port_mode { XGBE_PORT_MODE_RSVD = 0, XGBE_PORT_MODE_BACKPLANE, @@ -355,6 +363,10 @@ struct xgbe_phy_data { unsigned int redrv_addr; unsigned int redrv_lane; unsigned int redrv_model; + + /* KR AN support */ + unsigned int phy_cdr_notrack; + unsigned int phy_cdr_delay; }; /* I2C, MDIO and GPIO lines are muxed, so only one device at a time */ @@ -2361,7 +2373,7 @@ static int xgbe_phy_link_status(struct xgbe_prv_data *pdata, int *an_restart) return 1; /* No link, attempt a receiver reset cycle */ - if (phy_data->rrc_count++) { + if (phy_data->rrc_count++ > XGBE_RRC_FREQUENCY) { phy_data->rrc_count = 0; xgbe_phy_rrc(pdata); } @@ -2669,6 +2681,103 @@ static bool xgbe_phy_port_enabled(struct xgbe_prv_data *pdata) return true; } +static void xgbe_phy_cdr_track(struct xgbe_prv_data *pdata) +{ + struct xgbe_phy_data *phy_data = pdata->phy_data; + + if (!pdata->debugfs_an_cdr_workaround) + return; + + if (!phy_data->phy_cdr_notrack) + return; + + usleep_range(phy_data->phy_cdr_delay, + phy_data->phy_cdr_delay + 500); + + XMDIO_WRITE_BITS(pdata, MDIO_MMD_PMAPMD, MDIO_VEND2_PMA_CDR_CONTROL, + XGBE_PMA_CDR_TRACK_EN_MASK, + XGBE_PMA_CDR_TRACK_EN_ON); + + phy_data->phy_cdr_notrack = 0; +} + +static void xgbe_phy_cdr_notrack(struct xgbe_prv_data *pdata) +{ + struct xgbe_phy_data *phy_data = pdata->phy_data; + + if (!pdata->debugfs_an_cdr_workaround) + return; + + if (phy_data->phy_cdr_notrack) + return; + + XMDIO_WRITE_BITS(pdata, MDIO_MMD_PMAPMD, MDIO_VEND2_PMA_CDR_CONTROL, + XGBE_PMA_CDR_TRACK_EN_MASK, + XGBE_PMA_CDR_TRACK_EN_OFF); + + xgbe_phy_rrc(pdata); + + phy_data->phy_cdr_notrack = 1; +} + +static void xgbe_phy_kr_training_post(struct xgbe_prv_data *pdata) +{ + if (!pdata->debugfs_an_cdr_track_early) + xgbe_phy_cdr_track(pdata); +} + +static void xgbe_phy_kr_training_pre(struct xgbe_prv_data *pdata) +{ + if (pdata->debugfs_an_cdr_track_early) + xgbe_phy_cdr_track(pdata); +} + +static void xgbe_phy_an_post(struct xgbe_prv_data *pdata) +{ + struct xgbe_phy_data *phy_data = pdata->phy_data; + + switch (pdata->an_mode) { + case XGBE_AN_MODE_CL73: + case XGBE_AN_MODE_CL73_REDRV: + if (phy_data->cur_mode != XGBE_MODE_KR) + break; + + xgbe_phy_cdr_track(pdata); + + switch (pdata->an_result) { + case XGBE_AN_READY: + case XGBE_AN_COMPLETE: + break; + default: + if (phy_data->phy_cdr_delay < XGBE_CDR_DELAY_MAX) + phy_data->phy_cdr_delay += XGBE_CDR_DELAY_INC; + else + phy_data->phy_cdr_delay = XGBE_CDR_DELAY_INIT; + break; + } + break; + default: + break; + } +} + +static void xgbe_phy_an_pre(struct xgbe_prv_data *pdata) +{ + struct xgbe_phy_data *phy_data = pdata->phy_data; + + switch (pdata->an_mode) { + case XGBE_AN_MODE_CL73: + case XGBE_AN_MODE_CL73_REDRV: + if (phy_data->cur_mode != XGBE_MODE_KR) + break; + + xgbe_phy_cdr_notrack(pdata); + break; + default: + break; + } +} + static void xgbe_phy_stop(struct xgbe_prv_data *pdata) { struct xgbe_phy_data *phy_data = pdata->phy_data; @@ -2680,6 +2789,9 @@ static void xgbe_phy_stop(struct xgbe_prv_data *pdata) xgbe_phy_sfp_reset(phy_data); xgbe_phy_sfp_mod_absent(pdata); + /* Reset CDR support */ + xgbe_phy_cdr_track(pdata); + /* Power off the PHY */ xgbe_phy_power_off(pdata); @@ -2712,6 +2824,9 @@ static int xgbe_phy_start(struct xgbe_prv_data *pdata) /* Start in highest supported mode */ xgbe_phy_set_mode(pdata, phy_data->start_mode); + /* Reset CDR support */ + xgbe_phy_cdr_track(pdata); + /* After starting the I2C controller, we can check for an SFP */ switch (phy_data->port_mode) { case XGBE_PORT_MODE_SFP: @@ -3019,6 +3134,8 @@ static int xgbe_phy_init(struct xgbe_prv_data *pdata) } } + phy_data->phy_cdr_delay = XGBE_CDR_DELAY_INIT; + /* Register for driving external PHYs */ mii = devm_mdiobus_alloc(pdata->dev); if (!mii) { @@ -3071,4 +3188,10 @@ void xgbe_init_function_ptrs_phy_v2(struct xgbe_phy_if *phy_if) phy_impl->an_advertising = xgbe_phy_an_advertising; phy_impl->an_outcome = xgbe_phy_an_outcome; + + phy_impl->an_pre = xgbe_phy_an_pre; + phy_impl->an_post = xgbe_phy_an_post; + + phy_impl->kr_training_pre = xgbe_phy_kr_training_pre; + phy_impl->kr_training_post = xgbe_phy_kr_training_post; } diff --git a/drivers/net/ethernet/amd/xgbe/xgbe.h b/drivers/net/ethernet/amd/xgbe/xgbe.h index fa0b51ea1b95..95d4b56448c6 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe.h +++ b/drivers/net/ethernet/amd/xgbe/xgbe.h @@ -994,6 +994,7 @@ struct xgbe_version_data { unsigned int irq_reissue_support; unsigned int tx_desc_prefetch; unsigned int rx_desc_prefetch; + unsigned int an_cdr_workaround; }; struct xgbe_vxlan_data { @@ -1262,6 +1263,9 @@ struct xgbe_prv_data { unsigned int debugfs_xprop_reg; unsigned int debugfs_xi2c_reg; + + bool debugfs_an_cdr_workaround; + bool debugfs_an_cdr_track_early; }; /* Function prototypes*/ |