| /**************************************************************************** |
| * Driver for Solarflare Solarstorm network controllers and boards |
| * Copyright 2009-2010 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. |
| */ |
| |
| /* |
| * Driver for PHY related operations via MCDI. |
| */ |
| |
| #include <linux/slab.h> |
| #include "efx.h" |
| #include "phy.h" |
| #include "mcdi.h" |
| #include "mcdi_pcol.h" |
| #include "nic.h" |
| #include "selftest.h" |
| |
| struct efx_mcdi_phy_data { |
| u32 flags; |
| u32 type; |
| u32 supported_cap; |
| u32 channel; |
| u32 port; |
| u32 stats_mask; |
| u8 name[20]; |
| u32 media; |
| u32 mmd_mask; |
| u8 revision[20]; |
| u32 forced_cap; |
| }; |
| |
| static int |
| efx_mcdi_get_phy_cfg(struct efx_nic *efx, struct efx_mcdi_phy_data *cfg) |
| { |
| MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_CFG_OUT_LEN); |
| size_t outlen; |
| int rc; |
| |
| BUILD_BUG_ON(MC_CMD_GET_PHY_CFG_IN_LEN != 0); |
| BUILD_BUG_ON(MC_CMD_GET_PHY_CFG_OUT_NAME_LEN != sizeof(cfg->name)); |
| |
| rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_CFG, NULL, 0, |
| outbuf, sizeof(outbuf), &outlen); |
| if (rc) |
| goto fail; |
| |
| if (outlen < MC_CMD_GET_PHY_CFG_OUT_LEN) { |
| rc = -EIO; |
| goto fail; |
| } |
| |
| cfg->flags = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_FLAGS); |
| cfg->type = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_TYPE); |
| cfg->supported_cap = |
| MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_SUPPORTED_CAP); |
| cfg->channel = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_CHANNEL); |
| cfg->port = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_PRT); |
| cfg->stats_mask = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_STATS_MASK); |
| memcpy(cfg->name, MCDI_PTR(outbuf, GET_PHY_CFG_OUT_NAME), |
| sizeof(cfg->name)); |
| cfg->media = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_MEDIA_TYPE); |
| cfg->mmd_mask = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_MMD_MASK); |
| memcpy(cfg->revision, MCDI_PTR(outbuf, GET_PHY_CFG_OUT_REVISION), |
| sizeof(cfg->revision)); |
| |
| return 0; |
| |
| fail: |
| netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); |
| return rc; |
| } |
| |
| static int efx_mcdi_set_link(struct efx_nic *efx, u32 capabilities, |
| u32 flags, u32 loopback_mode, |
| u32 loopback_speed) |
| { |
| MCDI_DECLARE_BUF(inbuf, MC_CMD_SET_LINK_IN_LEN); |
| int rc; |
| |
| BUILD_BUG_ON(MC_CMD_SET_LINK_OUT_LEN != 0); |
| |
| MCDI_SET_DWORD(inbuf, SET_LINK_IN_CAP, capabilities); |
| MCDI_SET_DWORD(inbuf, SET_LINK_IN_FLAGS, flags); |
| MCDI_SET_DWORD(inbuf, SET_LINK_IN_LOOPBACK_MODE, loopback_mode); |
| MCDI_SET_DWORD(inbuf, SET_LINK_IN_LOOPBACK_SPEED, loopback_speed); |
| |
| rc = efx_mcdi_rpc(efx, MC_CMD_SET_LINK, inbuf, sizeof(inbuf), |
| NULL, 0, NULL); |
| if (rc) |
| goto fail; |
| |
| return 0; |
| |
| fail: |
| netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); |
| return rc; |
| } |
| |
| static int efx_mcdi_loopback_modes(struct efx_nic *efx, u64 *loopback_modes) |
| { |
| MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LOOPBACK_MODES_OUT_LEN); |
| size_t outlen; |
| int rc; |
| |
| rc = efx_mcdi_rpc(efx, MC_CMD_GET_LOOPBACK_MODES, NULL, 0, |
| outbuf, sizeof(outbuf), &outlen); |
| if (rc) |
| goto fail; |
| |
| if (outlen < (MC_CMD_GET_LOOPBACK_MODES_OUT_SUGGESTED_OFST + |
| MC_CMD_GET_LOOPBACK_MODES_OUT_SUGGESTED_LEN)) { |
| rc = -EIO; |
| goto fail; |
| } |
| |
| *loopback_modes = MCDI_QWORD(outbuf, GET_LOOPBACK_MODES_OUT_SUGGESTED); |
| |
| return 0; |
| |
| fail: |
| netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); |
| return rc; |
| } |
| |
| static int efx_mcdi_mdio_read(struct net_device *net_dev, |
| int prtad, int devad, u16 addr) |
| { |
| struct efx_nic *efx = netdev_priv(net_dev); |
| MCDI_DECLARE_BUF(inbuf, MC_CMD_MDIO_READ_IN_LEN); |
| MCDI_DECLARE_BUF(outbuf, MC_CMD_MDIO_READ_OUT_LEN); |
| size_t outlen; |
| int rc; |
| |
| MCDI_SET_DWORD(inbuf, MDIO_READ_IN_BUS, efx->mdio_bus); |
| MCDI_SET_DWORD(inbuf, MDIO_READ_IN_PRTAD, prtad); |
| MCDI_SET_DWORD(inbuf, MDIO_READ_IN_DEVAD, devad); |
| MCDI_SET_DWORD(inbuf, MDIO_READ_IN_ADDR, addr); |
| |
| rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_READ, inbuf, sizeof(inbuf), |
| outbuf, sizeof(outbuf), &outlen); |
| if (rc) |
| goto fail; |
| |
| if (MCDI_DWORD(outbuf, MDIO_READ_OUT_STATUS) != |
| MC_CMD_MDIO_STATUS_GOOD) |
| return -EIO; |
| |
| return (u16)MCDI_DWORD(outbuf, MDIO_READ_OUT_VALUE); |
| |
| fail: |
| netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); |
| return rc; |
| } |
| |
| static int efx_mcdi_mdio_write(struct net_device *net_dev, |
| int prtad, int devad, u16 addr, u16 value) |
| { |
| struct efx_nic *efx = netdev_priv(net_dev); |
| MCDI_DECLARE_BUF(inbuf, MC_CMD_MDIO_WRITE_IN_LEN); |
| MCDI_DECLARE_BUF(outbuf, MC_CMD_MDIO_WRITE_OUT_LEN); |
| size_t outlen; |
| int rc; |
| |
| MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_BUS, efx->mdio_bus); |
| MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_PRTAD, prtad); |
| MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_DEVAD, devad); |
| MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_ADDR, addr); |
| MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_VALUE, value); |
| |
| rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_WRITE, inbuf, sizeof(inbuf), |
| outbuf, sizeof(outbuf), &outlen); |
| if (rc) |
| goto fail; |
| |
| if (MCDI_DWORD(outbuf, MDIO_WRITE_OUT_STATUS) != |
| MC_CMD_MDIO_STATUS_GOOD) |
| return -EIO; |
| |
| return 0; |
| |
| fail: |
| netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); |
| return rc; |
| } |
| |
| static u32 mcdi_to_ethtool_cap(u32 media, u32 cap) |
| { |
| u32 result = 0; |
| |
| switch (media) { |
| case MC_CMD_MEDIA_KX4: |
| result |= SUPPORTED_Backplane; |
| if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN)) |
| result |= SUPPORTED_1000baseKX_Full; |
| if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN)) |
| result |= SUPPORTED_10000baseKX4_Full; |
| break; |
| |
| case MC_CMD_MEDIA_XFP: |
| case MC_CMD_MEDIA_SFP_PLUS: |
| result |= SUPPORTED_FIBRE; |
| break; |
| |
| case MC_CMD_MEDIA_BASE_T: |
| result |= SUPPORTED_TP; |
| if (cap & (1 << MC_CMD_PHY_CAP_10HDX_LBN)) |
| result |= SUPPORTED_10baseT_Half; |
| if (cap & (1 << MC_CMD_PHY_CAP_10FDX_LBN)) |
| result |= SUPPORTED_10baseT_Full; |
| if (cap & (1 << MC_CMD_PHY_CAP_100HDX_LBN)) |
| result |= SUPPORTED_100baseT_Half; |
| if (cap & (1 << MC_CMD_PHY_CAP_100FDX_LBN)) |
| result |= SUPPORTED_100baseT_Full; |
| if (cap & (1 << MC_CMD_PHY_CAP_1000HDX_LBN)) |
| result |= SUPPORTED_1000baseT_Half; |
| if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN)) |
| result |= SUPPORTED_1000baseT_Full; |
| if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN)) |
| result |= SUPPORTED_10000baseT_Full; |
| break; |
| } |
| |
| if (cap & (1 << MC_CMD_PHY_CAP_PAUSE_LBN)) |
| result |= SUPPORTED_Pause; |
| if (cap & (1 << MC_CMD_PHY_CAP_ASYM_LBN)) |
| result |= SUPPORTED_Asym_Pause; |
| if (cap & (1 << MC_CMD_PHY_CAP_AN_LBN)) |
| result |= SUPPORTED_Autoneg; |
| |
| return result; |
| } |
| |
| static u32 ethtool_to_mcdi_cap(u32 cap) |
| { |
| u32 result = 0; |
| |
| if (cap & SUPPORTED_10baseT_Half) |
| result |= (1 << MC_CMD_PHY_CAP_10HDX_LBN); |
| if (cap & SUPPORTED_10baseT_Full) |
| result |= (1 << MC_CMD_PHY_CAP_10FDX_LBN); |
| if (cap & SUPPORTED_100baseT_Half) |
| result |= (1 << MC_CMD_PHY_CAP_100HDX_LBN); |
| if (cap & SUPPORTED_100baseT_Full) |
| result |= (1 << MC_CMD_PHY_CAP_100FDX_LBN); |
| if (cap & SUPPORTED_1000baseT_Half) |
| result |= (1 << MC_CMD_PHY_CAP_1000HDX_LBN); |
| if (cap & (SUPPORTED_1000baseT_Full | SUPPORTED_1000baseKX_Full)) |
| result |= (1 << MC_CMD_PHY_CAP_1000FDX_LBN); |
| if (cap & (SUPPORTED_10000baseT_Full | SUPPORTED_10000baseKX4_Full)) |
| result |= (1 << MC_CMD_PHY_CAP_10000FDX_LBN); |
| if (cap & SUPPORTED_Pause) |
| result |= (1 << MC_CMD_PHY_CAP_PAUSE_LBN); |
| if (cap & SUPPORTED_Asym_Pause) |
| result |= (1 << MC_CMD_PHY_CAP_ASYM_LBN); |
| if (cap & SUPPORTED_Autoneg) |
| result |= (1 << MC_CMD_PHY_CAP_AN_LBN); |
| |
| return result; |
| } |
| |
| static u32 efx_get_mcdi_phy_flags(struct efx_nic *efx) |
| { |
| struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; |
| enum efx_phy_mode mode, supported; |
| u32 flags; |
| |
| /* TODO: Advertise the capabilities supported by this PHY */ |
| supported = 0; |
| if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_TXDIS_LBN)) |
| supported |= PHY_MODE_TX_DISABLED; |
| if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_LOWPOWER_LBN)) |
| supported |= PHY_MODE_LOW_POWER; |
| if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_POWEROFF_LBN)) |
| supported |= PHY_MODE_OFF; |
| |
| mode = efx->phy_mode & supported; |
| |
| flags = 0; |
| if (mode & PHY_MODE_TX_DISABLED) |
| flags |= (1 << MC_CMD_SET_LINK_IN_TXDIS_LBN); |
| if (mode & PHY_MODE_LOW_POWER) |
| flags |= (1 << MC_CMD_SET_LINK_IN_LOWPOWER_LBN); |
| if (mode & PHY_MODE_OFF) |
| flags |= (1 << MC_CMD_SET_LINK_IN_POWEROFF_LBN); |
| |
| return flags; |
| } |
| |
| static u32 mcdi_to_ethtool_media(u32 media) |
| { |
| switch (media) { |
| case MC_CMD_MEDIA_XAUI: |
| case MC_CMD_MEDIA_CX4: |
| case MC_CMD_MEDIA_KX4: |
| return PORT_OTHER; |
| |
| case MC_CMD_MEDIA_XFP: |
| case MC_CMD_MEDIA_SFP_PLUS: |
| return PORT_FIBRE; |
| |
| case MC_CMD_MEDIA_BASE_T: |
| return PORT_TP; |
| |
| default: |
| return PORT_OTHER; |
| } |
| } |
| |
| static void efx_mcdi_phy_decode_link(struct efx_nic *efx, |
| struct efx_link_state *link_state, |
| u32 speed, u32 flags, u32 fcntl) |
| { |
| switch (fcntl) { |
| case MC_CMD_FCNTL_AUTO: |
| WARN_ON(1); /* This is not a link mode */ |
| link_state->fc = EFX_FC_AUTO | EFX_FC_TX | EFX_FC_RX; |
| break; |
| case MC_CMD_FCNTL_BIDIR: |
| link_state->fc = EFX_FC_TX | EFX_FC_RX; |
| break; |
| case MC_CMD_FCNTL_RESPOND: |
| link_state->fc = EFX_FC_RX; |
| break; |
| default: |
| WARN_ON(1); |
| case MC_CMD_FCNTL_OFF: |
| link_state->fc = 0; |
| break; |
| } |
| |
| link_state->up = !!(flags & (1 << MC_CMD_GET_LINK_OUT_LINK_UP_LBN)); |
| link_state->fd = !!(flags & (1 << MC_CMD_GET_LINK_OUT_FULL_DUPLEX_LBN)); |
| link_state->speed = speed; |
| } |
| |
| static int efx_mcdi_phy_probe(struct efx_nic *efx) |
| { |
| struct efx_mcdi_phy_data *phy_data; |
| MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN); |
| u32 caps; |
| int rc; |
| |
| /* Initialise and populate phy_data */ |
| phy_data = kzalloc(sizeof(*phy_data), GFP_KERNEL); |
| if (phy_data == NULL) |
| return -ENOMEM; |
| |
| rc = efx_mcdi_get_phy_cfg(efx, phy_data); |
| if (rc != 0) |
| goto fail; |
| |
| /* Read initial link advertisement */ |
| BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); |
| rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, |
| outbuf, sizeof(outbuf), NULL); |
| if (rc) |
| goto fail; |
| |
| /* Fill out nic state */ |
| efx->phy_data = phy_data; |
| efx->phy_type = phy_data->type; |
| |
| efx->mdio_bus = phy_data->channel; |
| efx->mdio.prtad = phy_data->port; |
| efx->mdio.mmds = phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22); |
| efx->mdio.mode_support = 0; |
| if (phy_data->mmd_mask & (1 << MC_CMD_MMD_CLAUSE22)) |
| efx->mdio.mode_support |= MDIO_SUPPORTS_C22; |
| if (phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22)) |
| efx->mdio.mode_support |= MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22; |
| |
| caps = MCDI_DWORD(outbuf, GET_LINK_OUT_CAP); |
| if (caps & (1 << MC_CMD_PHY_CAP_AN_LBN)) |
| efx->link_advertising = |
| mcdi_to_ethtool_cap(phy_data->media, caps); |
| else |
| phy_data->forced_cap = caps; |
| |
| /* Assert that we can map efx -> mcdi loopback modes */ |
| BUILD_BUG_ON(LOOPBACK_NONE != MC_CMD_LOOPBACK_NONE); |
| BUILD_BUG_ON(LOOPBACK_DATA != MC_CMD_LOOPBACK_DATA); |
| BUILD_BUG_ON(LOOPBACK_GMAC != MC_CMD_LOOPBACK_GMAC); |
| BUILD_BUG_ON(LOOPBACK_XGMII != MC_CMD_LOOPBACK_XGMII); |
| BUILD_BUG_ON(LOOPBACK_XGXS != MC_CMD_LOOPBACK_XGXS); |
| BUILD_BUG_ON(LOOPBACK_XAUI != MC_CMD_LOOPBACK_XAUI); |
| BUILD_BUG_ON(LOOPBACK_GMII != MC_CMD_LOOPBACK_GMII); |
| BUILD_BUG_ON(LOOPBACK_SGMII != MC_CMD_LOOPBACK_SGMII); |
| BUILD_BUG_ON(LOOPBACK_XGBR != MC_CMD_LOOPBACK_XGBR); |
| BUILD_BUG_ON(LOOPBACK_XFI != MC_CMD_LOOPBACK_XFI); |
| BUILD_BUG_ON(LOOPBACK_XAUI_FAR != MC_CMD_LOOPBACK_XAUI_FAR); |
| BUILD_BUG_ON(LOOPBACK_GMII_FAR != MC_CMD_LOOPBACK_GMII_FAR); |
| BUILD_BUG_ON(LOOPBACK_SGMII_FAR != MC_CMD_LOOPBACK_SGMII_FAR); |
| BUILD_BUG_ON(LOOPBACK_XFI_FAR != MC_CMD_LOOPBACK_XFI_FAR); |
| BUILD_BUG_ON(LOOPBACK_GPHY != MC_CMD_LOOPBACK_GPHY); |
| BUILD_BUG_ON(LOOPBACK_PHYXS != MC_CMD_LOOPBACK_PHYXS); |
| BUILD_BUG_ON(LOOPBACK_PCS != MC_CMD_LOOPBACK_PCS); |
| BUILD_BUG_ON(LOOPBACK_PMAPMD != MC_CMD_LOOPBACK_PMAPMD); |
| BUILD_BUG_ON(LOOPBACK_XPORT != MC_CMD_LOOPBACK_XPORT); |
| BUILD_BUG_ON(LOOPBACK_XGMII_WS != MC_CMD_LOOPBACK_XGMII_WS); |
| BUILD_BUG_ON(LOOPBACK_XAUI_WS != MC_CMD_LOOPBACK_XAUI_WS); |
| BUILD_BUG_ON(LOOPBACK_XAUI_WS_FAR != MC_CMD_LOOPBACK_XAUI_WS_FAR); |
| BUILD_BUG_ON(LOOPBACK_XAUI_WS_NEAR != MC_CMD_LOOPBACK_XAUI_WS_NEAR); |
| BUILD_BUG_ON(LOOPBACK_GMII_WS != MC_CMD_LOOPBACK_GMII_WS); |
| BUILD_BUG_ON(LOOPBACK_XFI_WS != MC_CMD_LOOPBACK_XFI_WS); |
| BUILD_BUG_ON(LOOPBACK_XFI_WS_FAR != MC_CMD_LOOPBACK_XFI_WS_FAR); |
| BUILD_BUG_ON(LOOPBACK_PHYXS_WS != MC_CMD_LOOPBACK_PHYXS_WS); |
| |
| rc = efx_mcdi_loopback_modes(efx, &efx->loopback_modes); |
| if (rc != 0) |
| goto fail; |
| /* The MC indicates that LOOPBACK_NONE is a valid loopback mode, |
| * but by convention we don't */ |
| efx->loopback_modes &= ~(1 << LOOPBACK_NONE); |
| |
| /* Set the initial link mode */ |
| efx_mcdi_phy_decode_link( |
| efx, &efx->link_state, |
| MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED), |
| MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS), |
| MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL)); |
| |
| /* Default to Autonegotiated flow control if the PHY supports it */ |
| efx->wanted_fc = EFX_FC_RX | EFX_FC_TX; |
| if (phy_data->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN)) |
| efx->wanted_fc |= EFX_FC_AUTO; |
| efx_link_set_wanted_fc(efx, efx->wanted_fc); |
| |
| return 0; |
| |
| fail: |
| kfree(phy_data); |
| return rc; |
| } |
| |
| int efx_mcdi_port_reconfigure(struct efx_nic *efx) |
| { |
| struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; |
| u32 caps = (efx->link_advertising ? |
| ethtool_to_mcdi_cap(efx->link_advertising) : |
| phy_cfg->forced_cap); |
| |
| return efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx), |
| efx->loopback_mode, 0); |
| } |
| |
| /* Verify that the forced flow control settings (!EFX_FC_AUTO) are |
| * supported by the link partner. Warn the user if this isn't the case |
| */ |
| static void efx_mcdi_phy_check_fcntl(struct efx_nic *efx, u32 lpa) |
| { |
| struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; |
| u32 rmtadv; |
| |
| /* The link partner capabilities are only relevant if the |
| * link supports flow control autonegotiation */ |
| if (~phy_cfg->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN)) |
| return; |
| |
| /* If flow control autoneg is supported and enabled, then fine */ |
| if (efx->wanted_fc & EFX_FC_AUTO) |
| return; |
| |
| rmtadv = 0; |
| if (lpa & (1 << MC_CMD_PHY_CAP_PAUSE_LBN)) |
| rmtadv |= ADVERTISED_Pause; |
| if (lpa & (1 << MC_CMD_PHY_CAP_ASYM_LBN)) |
| rmtadv |= ADVERTISED_Asym_Pause; |
| |
| if ((efx->wanted_fc & EFX_FC_TX) && rmtadv == ADVERTISED_Asym_Pause) |
| netif_err(efx, link, efx->net_dev, |
| "warning: link partner doesn't support pause frames"); |
| } |
| |
| static bool efx_mcdi_phy_poll(struct efx_nic *efx) |
| { |
| struct efx_link_state old_state = efx->link_state; |
| MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN); |
| int rc; |
| |
| WARN_ON(!mutex_is_locked(&efx->mac_lock)); |
| |
| BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); |
| |
| rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, |
| outbuf, sizeof(outbuf), NULL); |
| if (rc) { |
| netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", |
| __func__, rc); |
| efx->link_state.up = false; |
| } else { |
| efx_mcdi_phy_decode_link( |
| efx, &efx->link_state, |
| MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED), |
| MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS), |
| MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL)); |
| } |
| |
| return !efx_link_state_equal(&efx->link_state, &old_state); |
| } |
| |
| static void efx_mcdi_phy_remove(struct efx_nic *efx) |
| { |
| struct efx_mcdi_phy_data *phy_data = efx->phy_data; |
| |
| efx->phy_data = NULL; |
| kfree(phy_data); |
| } |
| |
| static void efx_mcdi_phy_get_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd) |
| { |
| struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; |
| MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN); |
| int rc; |
| |
| ecmd->supported = |
| mcdi_to_ethtool_cap(phy_cfg->media, phy_cfg->supported_cap); |
| ecmd->advertising = efx->link_advertising; |
| ethtool_cmd_speed_set(ecmd, efx->link_state.speed); |
| ecmd->duplex = efx->link_state.fd; |
| ecmd->port = mcdi_to_ethtool_media(phy_cfg->media); |
| ecmd->phy_address = phy_cfg->port; |
| ecmd->transceiver = XCVR_INTERNAL; |
| ecmd->autoneg = !!(efx->link_advertising & ADVERTISED_Autoneg); |
| ecmd->mdio_support = (efx->mdio.mode_support & |
| (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22)); |
| |
| BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); |
| rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, |
| outbuf, sizeof(outbuf), NULL); |
| if (rc) { |
| netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", |
| __func__, rc); |
| return; |
| } |
| ecmd->lp_advertising = |
| mcdi_to_ethtool_cap(phy_cfg->media, |
| MCDI_DWORD(outbuf, GET_LINK_OUT_LP_CAP)); |
| } |
| |
| static int efx_mcdi_phy_set_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd) |
| { |
| struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; |
| u32 caps; |
| int rc; |
| |
| if (ecmd->autoneg) { |
| caps = (ethtool_to_mcdi_cap(ecmd->advertising) | |
| 1 << MC_CMD_PHY_CAP_AN_LBN); |
| } else if (ecmd->duplex) { |
| switch (ethtool_cmd_speed(ecmd)) { |
| case 10: caps = 1 << MC_CMD_PHY_CAP_10FDX_LBN; break; |
| case 100: caps = 1 << MC_CMD_PHY_CAP_100FDX_LBN; break; |
| case 1000: caps = 1 << MC_CMD_PHY_CAP_1000FDX_LBN; break; |
| case 10000: caps = 1 << MC_CMD_PHY_CAP_10000FDX_LBN; break; |
| default: return -EINVAL; |
| } |
| } else { |
| switch (ethtool_cmd_speed(ecmd)) { |
| case 10: caps = 1 << MC_CMD_PHY_CAP_10HDX_LBN; break; |
| case 100: caps = 1 << MC_CMD_PHY_CAP_100HDX_LBN; break; |
| case 1000: caps = 1 << MC_CMD_PHY_CAP_1000HDX_LBN; break; |
| default: return -EINVAL; |
| } |
| } |
| |
| rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx), |
| efx->loopback_mode, 0); |
| if (rc) |
| return rc; |
| |
| if (ecmd->autoneg) { |
| efx_link_set_advertising( |
| efx, ecmd->advertising | ADVERTISED_Autoneg); |
| phy_cfg->forced_cap = 0; |
| } else { |
| efx_link_set_advertising(efx, 0); |
| phy_cfg->forced_cap = caps; |
| } |
| return 0; |
| } |
| |
| static int efx_mcdi_phy_test_alive(struct efx_nic *efx) |
| { |
| MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_STATE_OUT_LEN); |
| size_t outlen; |
| int rc; |
| |
| BUILD_BUG_ON(MC_CMD_GET_PHY_STATE_IN_LEN != 0); |
| |
| rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_STATE, NULL, 0, |
| outbuf, sizeof(outbuf), &outlen); |
| if (rc) |
| return rc; |
| |
| if (outlen < MC_CMD_GET_PHY_STATE_OUT_LEN) |
| return -EIO; |
| if (MCDI_DWORD(outbuf, GET_PHY_STATE_OUT_STATE) != MC_CMD_PHY_STATE_OK) |
| return -EINVAL; |
| |
| return 0; |
| } |
| |
| static const char *const mcdi_sft9001_cable_diag_names[] = { |
| "cable.pairA.length", |
| "cable.pairB.length", |
| "cable.pairC.length", |
| "cable.pairD.length", |
| "cable.pairA.status", |
| "cable.pairB.status", |
| "cable.pairC.status", |
| "cable.pairD.status", |
| }; |
| |
| static int efx_mcdi_bist(struct efx_nic *efx, unsigned int bist_mode, |
| int *results) |
| { |
| unsigned int retry, i, count = 0; |
| size_t outlen; |
| u32 status; |
| MCDI_DECLARE_BUF(inbuf, MC_CMD_START_BIST_IN_LEN); |
| MCDI_DECLARE_BUF(outbuf, MC_CMD_POLL_BIST_OUT_SFT9001_LEN); |
| u8 *ptr; |
| int rc; |
| |
| BUILD_BUG_ON(MC_CMD_START_BIST_OUT_LEN != 0); |
| MCDI_SET_DWORD(inbuf, START_BIST_IN_TYPE, bist_mode); |
| rc = efx_mcdi_rpc(efx, MC_CMD_START_BIST, |
| inbuf, MC_CMD_START_BIST_IN_LEN, NULL, 0, NULL); |
| if (rc) |
| goto out; |
| |
| /* Wait up to 10s for BIST to finish */ |
| for (retry = 0; retry < 100; ++retry) { |
| BUILD_BUG_ON(MC_CMD_POLL_BIST_IN_LEN != 0); |
| rc = efx_mcdi_rpc(efx, MC_CMD_POLL_BIST, NULL, 0, |
| outbuf, sizeof(outbuf), &outlen); |
| if (rc) |
| goto out; |
| |
| status = MCDI_DWORD(outbuf, POLL_BIST_OUT_RESULT); |
| if (status != MC_CMD_POLL_BIST_RUNNING) |
| goto finished; |
| |
| msleep(100); |
| } |
| |
| rc = -ETIMEDOUT; |
| goto out; |
| |
| finished: |
| results[count++] = (status == MC_CMD_POLL_BIST_PASSED) ? 1 : -1; |
| |
| /* SFT9001 specific cable diagnostics output */ |
| if (efx->phy_type == PHY_TYPE_SFT9001B && |
| (bist_mode == MC_CMD_PHY_BIST_CABLE_SHORT || |
| bist_mode == MC_CMD_PHY_BIST_CABLE_LONG)) { |
| ptr = MCDI_PTR(outbuf, POLL_BIST_OUT_SFT9001_CABLE_LENGTH_A); |
| if (status == MC_CMD_POLL_BIST_PASSED && |
| outlen >= MC_CMD_POLL_BIST_OUT_SFT9001_LEN) { |
| for (i = 0; i < 8; i++) { |
| results[count + i] = |
| EFX_DWORD_FIELD(((efx_dword_t *)ptr)[i], |
| EFX_DWORD_0); |
| } |
| } |
| count += 8; |
| } |
| rc = count; |
| |
| out: |
| return rc; |
| } |
| |
| static int efx_mcdi_phy_run_tests(struct efx_nic *efx, int *results, |
| unsigned flags) |
| { |
| struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; |
| u32 mode; |
| int rc; |
| |
| if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) { |
| rc = efx_mcdi_bist(efx, MC_CMD_PHY_BIST, results); |
| if (rc < 0) |
| return rc; |
| |
| results += rc; |
| } |
| |
| /* If we support both LONG and SHORT, then run each in response to |
| * break or not. Otherwise, run the one we support */ |
| mode = 0; |
| if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN)) { |
| if ((flags & ETH_TEST_FL_OFFLINE) && |
| (phy_cfg->flags & |
| (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))) |
| mode = MC_CMD_PHY_BIST_CABLE_LONG; |
| else |
| mode = MC_CMD_PHY_BIST_CABLE_SHORT; |
| } else if (phy_cfg->flags & |
| (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN)) |
| mode = MC_CMD_PHY_BIST_CABLE_LONG; |
| |
| if (mode != 0) { |
| rc = efx_mcdi_bist(efx, mode, results); |
| if (rc < 0) |
| return rc; |
| results += rc; |
| } |
| |
| return 0; |
| } |
| |
| static const char *efx_mcdi_phy_test_name(struct efx_nic *efx, |
| unsigned int index) |
| { |
| struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; |
| |
| if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) { |
| if (index == 0) |
| return "bist"; |
| --index; |
| } |
| |
| if (phy_cfg->flags & ((1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN) | |
| (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))) { |
| if (index == 0) |
| return "cable"; |
| --index; |
| |
| if (efx->phy_type == PHY_TYPE_SFT9001B) { |
| if (index < ARRAY_SIZE(mcdi_sft9001_cable_diag_names)) |
| return mcdi_sft9001_cable_diag_names[index]; |
| index -= ARRAY_SIZE(mcdi_sft9001_cable_diag_names); |
| } |
| } |
| |
| return NULL; |
| } |
| |
| #define SFP_PAGE_SIZE 128 |
| #define SFP_NUM_PAGES 2 |
| static int efx_mcdi_phy_get_module_eeprom(struct efx_nic *efx, |
| struct ethtool_eeprom *ee, u8 *data) |
| { |
| MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_MEDIA_INFO_OUT_LENMAX); |
| MCDI_DECLARE_BUF(inbuf, MC_CMD_GET_PHY_MEDIA_INFO_IN_LEN); |
| size_t outlen; |
| int rc; |
| unsigned int payload_len; |
| unsigned int space_remaining = ee->len; |
| unsigned int page; |
| unsigned int page_off; |
| unsigned int to_copy; |
| u8 *user_data = data; |
| |
| BUILD_BUG_ON(SFP_PAGE_SIZE * SFP_NUM_PAGES != ETH_MODULE_SFF_8079_LEN); |
| |
| page_off = ee->offset % SFP_PAGE_SIZE; |
| page = ee->offset / SFP_PAGE_SIZE; |
| |
| while (space_remaining && (page < SFP_NUM_PAGES)) { |
| MCDI_SET_DWORD(inbuf, GET_PHY_MEDIA_INFO_IN_PAGE, page); |
| |
| rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_MEDIA_INFO, |
| inbuf, sizeof(inbuf), |
| outbuf, sizeof(outbuf), |
| &outlen); |
| if (rc) |
| return rc; |
| |
| if (outlen < (MC_CMD_GET_PHY_MEDIA_INFO_OUT_DATA_OFST + |
| SFP_PAGE_SIZE)) |
| return -EIO; |
| |
| payload_len = MCDI_DWORD(outbuf, |
| GET_PHY_MEDIA_INFO_OUT_DATALEN); |
| if (payload_len != SFP_PAGE_SIZE) |
| return -EIO; |
| |
| /* Copy as much as we can into data */ |
| payload_len -= page_off; |
| to_copy = (space_remaining < payload_len) ? |
| space_remaining : payload_len; |
| |
| memcpy(user_data, |
| MCDI_PTR(outbuf, GET_PHY_MEDIA_INFO_OUT_DATA) + page_off, |
| to_copy); |
| |
| space_remaining -= to_copy; |
| user_data += to_copy; |
| page_off = 0; |
| page++; |
| } |
| |
| return 0; |
| } |
| |
| static int efx_mcdi_phy_get_module_info(struct efx_nic *efx, |
| struct ethtool_modinfo *modinfo) |
| { |
| struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; |
| |
| switch (phy_cfg->media) { |
| case MC_CMD_MEDIA_SFP_PLUS: |
| modinfo->type = ETH_MODULE_SFF_8079; |
| modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN; |
| return 0; |
| default: |
| return -EOPNOTSUPP; |
| } |
| } |
| |
| static const struct efx_phy_operations efx_mcdi_phy_ops = { |
| .probe = efx_mcdi_phy_probe, |
| .init = efx_port_dummy_op_int, |
| .reconfigure = efx_mcdi_port_reconfigure, |
| .poll = efx_mcdi_phy_poll, |
| .fini = efx_port_dummy_op_void, |
| .remove = efx_mcdi_phy_remove, |
| .get_settings = efx_mcdi_phy_get_settings, |
| .set_settings = efx_mcdi_phy_set_settings, |
| .test_alive = efx_mcdi_phy_test_alive, |
| .run_tests = efx_mcdi_phy_run_tests, |
| .test_name = efx_mcdi_phy_test_name, |
| .get_module_eeprom = efx_mcdi_phy_get_module_eeprom, |
| .get_module_info = efx_mcdi_phy_get_module_info, |
| }; |
| |
| u32 efx_mcdi_phy_get_caps(struct efx_nic *efx) |
| { |
| struct efx_mcdi_phy_data *phy_data = efx->phy_data; |
| |
| return phy_data->supported_cap; |
| } |
| |
| static unsigned int efx_mcdi_event_link_speed[] = { |
| [MCDI_EVENT_LINKCHANGE_SPEED_100M] = 100, |
| [MCDI_EVENT_LINKCHANGE_SPEED_1G] = 1000, |
| [MCDI_EVENT_LINKCHANGE_SPEED_10G] = 10000, |
| }; |
| |
| void efx_mcdi_process_link_change(struct efx_nic *efx, efx_qword_t *ev) |
| { |
| u32 flags, fcntl, speed, lpa; |
| |
| speed = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_SPEED); |
| EFX_BUG_ON_PARANOID(speed >= ARRAY_SIZE(efx_mcdi_event_link_speed)); |
| speed = efx_mcdi_event_link_speed[speed]; |
| |
| flags = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LINK_FLAGS); |
| fcntl = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_FCNTL); |
| lpa = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LP_CAP); |
| |
| /* efx->link_state is only modified by efx_mcdi_phy_get_link(), |
| * which is only run after flushing the event queues. Therefore, it |
| * is safe to modify the link state outside of the mac_lock here. |
| */ |
| efx_mcdi_phy_decode_link(efx, &efx->link_state, speed, flags, fcntl); |
| |
| efx_mcdi_phy_check_fcntl(efx, lpa); |
| |
| efx_link_status_changed(efx); |
| } |
| |
| int efx_mcdi_set_mac(struct efx_nic *efx) |
| { |
| u32 fcntl; |
| MCDI_DECLARE_BUF(cmdbytes, MC_CMD_SET_MAC_IN_LEN); |
| |
| BUILD_BUG_ON(MC_CMD_SET_MAC_OUT_LEN != 0); |
| |
| memcpy(MCDI_PTR(cmdbytes, SET_MAC_IN_ADDR), |
| efx->net_dev->dev_addr, ETH_ALEN); |
| |
| MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_MTU, |
| EFX_MAX_FRAME_LEN(efx->net_dev->mtu)); |
| MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_DRAIN, 0); |
| |
| /* Set simple MAC filter for Siena */ |
| MCDI_POPULATE_DWORD_1(cmdbytes, SET_MAC_IN_REJECT, |
| SET_MAC_IN_REJECT_UNCST, efx->unicast_filter); |
| |
| switch (efx->wanted_fc) { |
| case EFX_FC_RX | EFX_FC_TX: |
| fcntl = MC_CMD_FCNTL_BIDIR; |
| break; |
| case EFX_FC_RX: |
| fcntl = MC_CMD_FCNTL_RESPOND; |
| break; |
| default: |
| fcntl = MC_CMD_FCNTL_OFF; |
| break; |
| } |
| if (efx->wanted_fc & EFX_FC_AUTO) |
| fcntl = MC_CMD_FCNTL_AUTO; |
| if (efx->fc_disable) |
| fcntl = MC_CMD_FCNTL_OFF; |
| |
| MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_FCNTL, fcntl); |
| |
| return efx_mcdi_rpc(efx, MC_CMD_SET_MAC, cmdbytes, sizeof(cmdbytes), |
| NULL, 0, NULL); |
| } |
| |
| bool efx_mcdi_mac_check_fault(struct efx_nic *efx) |
| { |
| MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN); |
| size_t outlength; |
| int rc; |
| |
| BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); |
| |
| rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, |
| outbuf, sizeof(outbuf), &outlength); |
| if (rc) { |
| netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", |
| __func__, rc); |
| return true; |
| } |
| |
| return MCDI_DWORD(outbuf, GET_LINK_OUT_MAC_FAULT) != 0; |
| } |
| |
| static int efx_mcdi_mac_stats(struct efx_nic *efx, dma_addr_t dma_addr, |
| u32 dma_len, int enable, int clear) |
| { |
| MCDI_DECLARE_BUF(inbuf, MC_CMD_MAC_STATS_IN_LEN); |
| int rc; |
| int period = enable ? 1000 : 0; |
| |
| BUILD_BUG_ON(MC_CMD_MAC_STATS_OUT_DMA_LEN != 0); |
| |
| MCDI_SET_QWORD(inbuf, MAC_STATS_IN_DMA_ADDR, dma_addr); |
| MCDI_POPULATE_DWORD_7(inbuf, MAC_STATS_IN_CMD, |
| MAC_STATS_IN_DMA, !!enable, |
| MAC_STATS_IN_CLEAR, clear, |
| MAC_STATS_IN_PERIODIC_CHANGE, 1, |
| MAC_STATS_IN_PERIODIC_ENABLE, !!enable, |
| MAC_STATS_IN_PERIODIC_CLEAR, 0, |
| MAC_STATS_IN_PERIODIC_NOEVENT, 1, |
| MAC_STATS_IN_PERIOD_MS, period); |
| MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_LEN, dma_len); |
| |
| rc = efx_mcdi_rpc(efx, MC_CMD_MAC_STATS, inbuf, sizeof(inbuf), |
| NULL, 0, NULL); |
| if (rc) |
| goto fail; |
| |
| return 0; |
| |
| fail: |
| netif_err(efx, hw, efx->net_dev, "%s: %s failed rc=%d\n", |
| __func__, enable ? "enable" : "disable", rc); |
| return rc; |
| } |
| |
| void efx_mcdi_mac_start_stats(struct efx_nic *efx) |
| { |
| __le64 *dma_stats = efx->stats_buffer.addr; |
| |
| dma_stats[MC_CMD_MAC_GENERATION_END] = EFX_MC_STATS_GENERATION_INVALID; |
| |
| efx_mcdi_mac_stats(efx, efx->stats_buffer.dma_addr, |
| MC_CMD_MAC_NSTATS * sizeof(u64), 1, 0); |
| } |
| |
| void efx_mcdi_mac_stop_stats(struct efx_nic *efx) |
| { |
| efx_mcdi_mac_stats(efx, efx->stats_buffer.dma_addr, 0, 0, 0); |
| } |
| |
| int efx_mcdi_port_probe(struct efx_nic *efx) |
| { |
| int rc; |
| |
| /* Hook in PHY operations table */ |
| efx->phy_op = &efx_mcdi_phy_ops; |
| |
| /* Set up MDIO structure for PHY */ |
| efx->mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22; |
| efx->mdio.mdio_read = efx_mcdi_mdio_read; |
| efx->mdio.mdio_write = efx_mcdi_mdio_write; |
| |
| /* Fill out MDIO structure, loopback modes, and initial link state */ |
| rc = efx->phy_op->probe(efx); |
| if (rc != 0) |
| return rc; |
| |
| /* Allocate buffer for stats */ |
| rc = efx_nic_alloc_buffer(efx, &efx->stats_buffer, |
| MC_CMD_MAC_NSTATS * sizeof(u64), GFP_KERNEL); |
| if (rc) |
| return rc; |
| netif_dbg(efx, probe, efx->net_dev, |
| "stats buffer at %llx (virt %p phys %llx)\n", |
| (u64)efx->stats_buffer.dma_addr, |
| efx->stats_buffer.addr, |
| (u64)virt_to_phys(efx->stats_buffer.addr)); |
| |
| efx_mcdi_mac_stats(efx, efx->stats_buffer.dma_addr, 0, 0, 1); |
| |
| return 0; |
| } |
| |
| void efx_mcdi_port_remove(struct efx_nic *efx) |
| { |
| efx->phy_op->remove(efx); |
| efx_nic_free_buffer(efx, &efx->stats_buffer); |
| } |
| |
| /* Get physical port number (EF10 only; on Siena it is same as PF number) */ |
| int efx_mcdi_port_get_number(struct efx_nic *efx) |
| { |
| MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PORT_ASSIGNMENT_OUT_LEN); |
| int rc; |
| |
| rc = efx_mcdi_rpc(efx, MC_CMD_GET_PORT_ASSIGNMENT, NULL, 0, |
| outbuf, sizeof(outbuf), NULL); |
| if (rc) |
| return rc; |
| |
| return MCDI_DWORD(outbuf, GET_PORT_ASSIGNMENT_OUT_PORT); |
| } |