/**************************************************************************** * Driver for Solarflare Solarstorm network controllers and boards * Copyright 2009 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 #include "efx.h" #include "phy.h" #include "mcdi.h" #include "mcdi_pcol.h" #include "mdio_10g.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) { u8 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) { u8 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) { u8 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_LEN) { rc = -EIO; goto fail; } *loopback_modes = MCDI_QWORD(outbuf, GET_LOOPBACK_MODES_SUGGESTED); return 0; fail: netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); return rc; } int efx_mcdi_mdio_read(struct efx_nic *efx, unsigned int bus, unsigned int prtad, unsigned int devad, u16 addr, u16 *value_out, u32 *status_out) { u8 inbuf[MC_CMD_MDIO_READ_IN_LEN]; u8 outbuf[MC_CMD_MDIO_READ_OUT_LEN]; size_t outlen; int rc; MCDI_SET_DWORD(inbuf, MDIO_READ_IN_BUS, 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; *value_out = (u16)MCDI_DWORD(outbuf, MDIO_READ_OUT_VALUE); *status_out = MCDI_DWORD(outbuf, MDIO_READ_OUT_STATUS); return 0; fail: netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); return rc; } int efx_mcdi_mdio_write(struct efx_nic *efx, unsigned int bus, unsigned int prtad, unsigned int devad, u16 addr, u16 value, u32 *status_out) { u8 inbuf[MC_CMD_MDIO_WRITE_IN_LEN]; u8 outbuf[MC_CMD_MDIO_WRITE_OUT_LEN]; size_t outlen; int rc; MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_BUS, 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; *status_out = MCDI_DWORD(outbuf, MDIO_WRITE_OUT_STATUS); 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_TXDIS_LBN)) supported |= PHY_MODE_TX_DISABLED; if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_LOWPOWER_LBN)) supported |= PHY_MODE_LOW_POWER; if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_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_TXDIS_LBN); if (mode & PHY_MODE_LOW_POWER) flags |= (1 << MC_CMD_SET_LINK_LOWPOWER_LBN); if (mode & PHY_MODE_OFF) flags |= (1 << MC_CMD_SET_LINK_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 int efx_mcdi_phy_probe(struct efx_nic *efx) { struct efx_mcdi_phy_data *phy_data; u8 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_phy_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); } 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_LINK_UP_LBN)); link_state->fd = !!(flags & (1 << MC_CMD_GET_LINK_FULL_DUPLEX_LBN)); link_state->speed = speed; } /* 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 */ 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 relevent 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; u8 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; u8 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; ecmd->speed = 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 (ecmd->speed) { 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 (ecmd->speed) { 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) { u8 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_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; u8 *buf, *ptr; int rc; buf = kzalloc(0x100, GFP_KERNEL); if (buf == NULL) return -ENOMEM; BUILD_BUG_ON(MC_CMD_START_BIST_OUT_LEN != 0); MCDI_SET_DWORD(buf, START_BIST_IN_TYPE, bist_mode); rc = efx_mcdi_rpc(efx, MC_CMD_START_BIST, buf, 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, buf, 0x100, &outlen); if (rc) goto out; status = MCDI_DWORD(buf, 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(buf, 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: kfree(buf); 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_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_BIST_CABLE_SHORT_LBN)) { if ((flags & ETH_TEST_FL_OFFLINE) && (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_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_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_BIST_LBN)) { if (index == 0) return "bist"; --index; } if (phy_cfg->flags & ((1 << MC_CMD_GET_PHY_CFG_BIST_CABLE_SHORT_LBN) | (1 << MC_CMD_GET_PHY_CFG_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; } struct efx_phy_operations efx_mcdi_phy_ops = { .probe = efx_mcdi_phy_probe, .init = efx_port_dummy_op_int, .reconfigure = efx_mcdi_phy_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, };