// SPDX-License-Identifier: GPL-2.0-only /**************************************************************************** * Driver for Solarflare network controllers and boards * Copyright 2009-2013 Solarflare Communications Inc. */ /* * Driver for PHY related operations via MCDI. */ #include #include "efx.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); 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) return rc; if (MCDI_DWORD(outbuf, MDIO_READ_OUT_STATUS) != MC_CMD_MDIO_STATUS_GOOD) return -EIO; return (u16)MCDI_DWORD(outbuf, MDIO_READ_OUT_VALUE); } 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) return rc; if (MCDI_DWORD(outbuf, MDIO_WRITE_OUT_STATUS) != MC_CMD_MDIO_STATUS_GOOD) return -EIO; return 0; } static void mcdi_to_ethtool_linkset(u32 media, u32 cap, unsigned long *linkset) { #define SET_BIT(name) __set_bit(ETHTOOL_LINK_MODE_ ## name ## _BIT, \ linkset) bitmap_zero(linkset, __ETHTOOL_LINK_MODE_MASK_NBITS); switch (media) { case MC_CMD_MEDIA_KX4: SET_BIT(Backplane); if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN)) SET_BIT(1000baseKX_Full); if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN)) SET_BIT(10000baseKX4_Full); if (cap & (1 << MC_CMD_PHY_CAP_40000FDX_LBN)) SET_BIT(40000baseKR4_Full); break; case MC_CMD_MEDIA_XFP: case MC_CMD_MEDIA_SFP_PLUS: case MC_CMD_MEDIA_QSFP_PLUS: SET_BIT(FIBRE); if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN)) SET_BIT(1000baseT_Full); if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN)) SET_BIT(10000baseT_Full); if (cap & (1 << MC_CMD_PHY_CAP_40000FDX_LBN)) SET_BIT(40000baseCR4_Full); if (cap & (1 << MC_CMD_PHY_CAP_100000FDX_LBN)) SET_BIT(100000baseCR4_Full); if (cap & (1 << MC_CMD_PHY_CAP_25000FDX_LBN)) SET_BIT(25000baseCR_Full); if (cap & (1 << MC_CMD_PHY_CAP_50000FDX_LBN)) SET_BIT(50000baseCR2_Full); break; case MC_CMD_MEDIA_BASE_T: SET_BIT(TP); if (cap & (1 << MC_CMD_PHY_CAP_10HDX_LBN)) SET_BIT(10baseT_Half); if (cap & (1 << MC_CMD_PHY_CAP_10FDX_LBN)) SET_BIT(10baseT_Full); if (cap & (1 << MC_CMD_PHY_CAP_100HDX_LBN)) SET_BIT(100baseT_Half); if (cap & (1 << MC_CMD_PHY_CAP_100FDX_LBN)) SET_BIT(100baseT_Full); if (cap & (1 << MC_CMD_PHY_CAP_1000HDX_LBN)) SET_BIT(1000baseT_Half); if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN)) SET_BIT(1000baseT_Full); if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN)) SET_BIT(10000baseT_Full); break; } if (cap & (1 << MC_CMD_PHY_CAP_PAUSE_LBN)) SET_BIT(Pause); if (cap & (1 << MC_CMD_PHY_CAP_ASYM_LBN)) SET_BIT(Asym_Pause); if (cap & (1 << MC_CMD_PHY_CAP_AN_LBN)) SET_BIT(Autoneg); #undef SET_BIT } static u32 ethtool_linkset_to_mcdi_cap(const unsigned long *linkset) { u32 result = 0; #define TEST_BIT(name) test_bit(ETHTOOL_LINK_MODE_ ## name ## _BIT, \ linkset) if (TEST_BIT(10baseT_Half)) result |= (1 << MC_CMD_PHY_CAP_10HDX_LBN); if (TEST_BIT(10baseT_Full)) result |= (1 << MC_CMD_PHY_CAP_10FDX_LBN); if (TEST_BIT(100baseT_Half)) result |= (1 << MC_CMD_PHY_CAP_100HDX_LBN); if (TEST_BIT(100baseT_Full)) result |= (1 << MC_CMD_PHY_CAP_100FDX_LBN); if (TEST_BIT(1000baseT_Half)) result |= (1 << MC_CMD_PHY_CAP_1000HDX_LBN); if (TEST_BIT(1000baseT_Full) || TEST_BIT(1000baseKX_Full)) result |= (1 << MC_CMD_PHY_CAP_1000FDX_LBN); if (TEST_BIT(10000baseT_Full) || TEST_BIT(10000baseKX4_Full)) result |= (1 << MC_CMD_PHY_CAP_10000FDX_LBN); if (TEST_BIT(40000baseCR4_Full) || TEST_BIT(40000baseKR4_Full)) result |= (1 << MC_CMD_PHY_CAP_40000FDX_LBN); if (TEST_BIT(100000baseCR4_Full)) result |= (1 << MC_CMD_PHY_CAP_100000FDX_LBN); if (TEST_BIT(25000baseCR_Full)) result |= (1 << MC_CMD_PHY_CAP_25000FDX_LBN); if (TEST_BIT(50000baseCR2_Full)) result |= (1 << MC_CMD_PHY_CAP_50000FDX_LBN); if (TEST_BIT(Pause)) result |= (1 << MC_CMD_PHY_CAP_PAUSE_LBN); if (TEST_BIT(Asym_Pause)) result |= (1 << MC_CMD_PHY_CAP_ASYM_LBN); if (TEST_BIT(Autoneg)) result |= (1 << MC_CMD_PHY_CAP_AN_LBN); #undef TEST_BIT 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 u8 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: case MC_CMD_MEDIA_QSFP_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); /* Fall through */ 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; } /* The semantics of the ethtool FEC mode bitmask are not well defined, * particularly the meaning of combinations of bits. Which means we get to * define our own semantics, as follows: * OFF overrides any other bits, and means "disable all FEC" (with the * exception of 25G KR4/CR4, where it is not possible to reject it if AN * partner requests it). * AUTO on its own means use cable requirements and link partner autoneg with * fw-default preferences for the cable type. * AUTO and either RS or BASER means use the specified FEC type if cable and * link partner support it, otherwise autoneg/fw-default. * RS or BASER alone means use the specified FEC type if cable and link partner * support it and either requests it, otherwise no FEC. * Both RS and BASER (whether AUTO or not) means use FEC if cable and link * partner support it, preferring RS to BASER. */ static u32 ethtool_fec_caps_to_mcdi(u32 ethtool_cap) { u32 ret = 0; if (ethtool_cap & ETHTOOL_FEC_OFF) return 0; if (ethtool_cap & ETHTOOL_FEC_AUTO) ret |= (1 << MC_CMD_PHY_CAP_BASER_FEC_LBN) | (1 << MC_CMD_PHY_CAP_25G_BASER_FEC_LBN) | (1 << MC_CMD_PHY_CAP_RS_FEC_LBN); if (ethtool_cap & ETHTOOL_FEC_RS) ret |= (1 << MC_CMD_PHY_CAP_RS_FEC_LBN) | (1 << MC_CMD_PHY_CAP_RS_FEC_REQUESTED_LBN); if (ethtool_cap & ETHTOOL_FEC_BASER) ret |= (1 << MC_CMD_PHY_CAP_BASER_FEC_LBN) | (1 << MC_CMD_PHY_CAP_25G_BASER_FEC_LBN) | (1 << MC_CMD_PHY_CAP_BASER_FEC_REQUESTED_LBN) | (1 << MC_CMD_PHY_CAP_25G_BASER_FEC_REQUESTED_LBN); return ret; } /* Invert ethtool_fec_caps_to_mcdi. There are two combinations that function * can never produce, (baser xor rs) and neither req; the implementation below * maps both of those to AUTO. This should never matter, and it's not clear * what a better mapping would be anyway. */ static u32 mcdi_fec_caps_to_ethtool(u32 caps, bool is_25g) { bool rs = caps & (1 << MC_CMD_PHY_CAP_RS_FEC_LBN), rs_req = caps & (1 << MC_CMD_PHY_CAP_RS_FEC_REQUESTED_LBN), baser = is_25g ? caps & (1 << MC_CMD_PHY_CAP_25G_BASER_FEC_LBN) : caps & (1 << MC_CMD_PHY_CAP_BASER_FEC_LBN), baser_req = is_25g ? caps & (1 << MC_CMD_PHY_CAP_25G_BASER_FEC_REQUESTED_LBN) : caps & (1 << MC_CMD_PHY_CAP_BASER_FEC_REQUESTED_LBN); if (!baser && !rs) return ETHTOOL_FEC_OFF; return (rs_req ? ETHTOOL_FEC_RS : 0) | (baser_req ? ETHTOOL_FEC_BASER : 0) | (baser == baser_req && rs == rs_req ? 0 : ETHTOOL_FEC_AUTO); } 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)) mcdi_to_ethtool_linkset(phy_data->media, caps, efx->link_advertising); 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)); /* Record the initial FEC configuration (or nearest approximation * representable in the ethtool configuration space) */ efx->fec_config = mcdi_fec_caps_to_ethtool(caps, efx->link_state.speed == 25000 || efx->link_state.speed == 50000); /* 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[0] ? ethtool_linkset_to_mcdi_cap(efx->link_advertising) : phy_cfg->forced_cap); caps |= ethtool_fec_caps_to_mcdi(efx->fec_config); 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) 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_link_ksettings(struct efx_nic *efx, struct ethtool_link_ksettings *cmd) { struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN); int rc; cmd->base.speed = efx->link_state.speed; cmd->base.duplex = efx->link_state.fd; cmd->base.port = mcdi_to_ethtool_media(phy_cfg->media); cmd->base.phy_address = phy_cfg->port; cmd->base.autoneg = !!(efx->link_advertising[0] & ADVERTISED_Autoneg); cmd->base.mdio_support = (efx->mdio.mode_support & (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22)); mcdi_to_ethtool_linkset(phy_cfg->media, phy_cfg->supported_cap, cmd->link_modes.supported); memcpy(cmd->link_modes.advertising, efx->link_advertising, sizeof(__ETHTOOL_DECLARE_LINK_MODE_MASK())); 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) return; mcdi_to_ethtool_linkset(phy_cfg->media, MCDI_DWORD(outbuf, GET_LINK_OUT_LP_CAP), cmd->link_modes.lp_advertising); } static int efx_mcdi_phy_set_link_ksettings(struct efx_nic *efx, const struct ethtool_link_ksettings *cmd) { struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; u32 caps; int rc; if (cmd->base.autoneg) { caps = (ethtool_linkset_to_mcdi_cap(cmd->link_modes.advertising) | 1 << MC_CMD_PHY_CAP_AN_LBN); } else if (cmd->base.duplex) { switch (cmd->base.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; case 40000: caps = 1 << MC_CMD_PHY_CAP_40000FDX_LBN; break; case 100000: caps = 1 << MC_CMD_PHY_CAP_100000FDX_LBN; break; case 25000: caps = 1 << MC_CMD_PHY_CAP_25000FDX_LBN; break; case 50000: caps = 1 << MC_CMD_PHY_CAP_50000FDX_LBN; break; default: return -EINVAL; } } else { switch (cmd->base.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; } } caps |= ethtool_fec_caps_to_mcdi(efx->fec_config); rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx), efx->loopback_mode, 0); if (rc) return rc; if (cmd->base.autoneg) { efx_link_set_advertising(efx, cmd->link_modes.advertising); phy_cfg->forced_cap = 0; } else { efx_link_clear_advertising(efx); phy_cfg->forced_cap = caps; } return 0; } static int efx_mcdi_phy_get_fecparam(struct efx_nic *efx, struct ethtool_fecparam *fec) { MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_V2_LEN); u32 caps, active, speed; /* MCDI format */ bool is_25g = false; size_t outlen; 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), &outlen); if (rc) return rc; if (outlen < MC_CMD_GET_LINK_OUT_V2_LEN) return -EOPNOTSUPP; /* behaviour for 25G/50G links depends on 25G BASER bit */ speed = MCDI_DWORD(outbuf, GET_LINK_OUT_V2_LINK_SPEED); is_25g = speed == 25000 || speed == 50000; caps = MCDI_DWORD(outbuf, GET_LINK_OUT_V2_CAP); fec->fec = mcdi_fec_caps_to_ethtool(caps, is_25g); /* BASER is never supported on 100G */ if (speed == 100000) fec->fec &= ~ETHTOOL_FEC_BASER; active = MCDI_DWORD(outbuf, GET_LINK_OUT_V2_FEC_TYPE); switch (active) { case MC_CMD_FEC_NONE: fec->active_fec = ETHTOOL_FEC_OFF; break; case MC_CMD_FEC_BASER: fec->active_fec = ETHTOOL_FEC_BASER; break; case MC_CMD_FEC_RS: fec->active_fec = ETHTOOL_FEC_RS; break; default: netif_warn(efx, hw, efx->net_dev, "Firmware reports unrecognised FEC_TYPE %u\n", active); /* We don't know what firmware has picked. AUTO is as good a * "can't happen" value as any other. */ fec->active_fec = ETHTOOL_FEC_AUTO; break; } return 0; } static int efx_mcdi_phy_set_fecparam(struct efx_nic *efx, const struct ethtool_fecparam *fec) { struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; u32 caps; int rc; /* Work out what efx_mcdi_phy_set_link_ksettings() would produce from * saved advertising bits */ if (test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, efx->link_advertising)) caps = (ethtool_linkset_to_mcdi_cap(efx->link_advertising) | 1 << MC_CMD_PHY_CAP_AN_LBN); else caps = phy_cfg->forced_cap; caps |= ethtool_fec_caps_to_mcdi(fec->fec); rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx), efx->loopback_mode, 0); if (rc) return rc; /* Record the new FEC setting for subsequent set_link calls */ efx->fec_config = fec->fec; 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 SFF_DIAG_TYPE_OFFSET 92 #define SFF_DIAG_ADDR_CHANGE BIT(2) #define SFF_8079_NUM_PAGES 2 #define SFF_8472_NUM_PAGES 4 #define SFF_8436_NUM_PAGES 5 #define SFF_DMT_LEVEL_OFFSET 94 /** efx_mcdi_phy_get_module_eeprom_page() - Get a single page of module eeprom * @efx: NIC context * @page: EEPROM page number * @data: Destination data pointer * @offset: Offset in page to copy from in to data * @space: Space available in data * * Return: * >=0 - amount of data copied * <0 - error */ static int efx_mcdi_phy_get_module_eeprom_page(struct efx_nic *efx, unsigned int page, u8 *data, ssize_t offset, ssize_t space) { 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; unsigned int payload_len; unsigned int to_copy; int rc; if (offset > SFP_PAGE_SIZE) return -EINVAL; to_copy = min(space, SFP_PAGE_SIZE - offset); MCDI_SET_DWORD(inbuf, GET_PHY_MEDIA_INFO_IN_PAGE, page); rc = efx_mcdi_rpc_quiet(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; memcpy(data, MCDI_PTR(outbuf, GET_PHY_MEDIA_INFO_OUT_DATA) + offset, to_copy); return to_copy; } static int efx_mcdi_phy_get_module_eeprom_byte(struct efx_nic *efx, unsigned int page, u8 byte) { int rc; u8 data; rc = efx_mcdi_phy_get_module_eeprom_page(efx, page, &data, byte, 1); if (rc == 1) return data; return rc; } static int efx_mcdi_phy_diag_type(struct efx_nic *efx) { /* Page zero of the EEPROM includes the diagnostic type at byte 92. */ return efx_mcdi_phy_get_module_eeprom_byte(efx, 0, SFF_DIAG_TYPE_OFFSET); } static int efx_mcdi_phy_sff_8472_level(struct efx_nic *efx) { /* Page zero of the EEPROM includes the DMT level at byte 94. */ return efx_mcdi_phy_get_module_eeprom_byte(efx, 0, SFF_DMT_LEVEL_OFFSET); } static u32 efx_mcdi_phy_module_type(struct efx_nic *efx) { struct efx_mcdi_phy_data *phy_data = efx->phy_data; if (phy_data->media != MC_CMD_MEDIA_QSFP_PLUS) return phy_data->media; /* A QSFP+ NIC may actually have an SFP+ module attached. * The ID is page 0, byte 0. */ switch (efx_mcdi_phy_get_module_eeprom_byte(efx, 0, 0)) { case 0x3: return MC_CMD_MEDIA_SFP_PLUS; case 0xc: case 0xd: return MC_CMD_MEDIA_QSFP_PLUS; default: return 0; } } static int efx_mcdi_phy_get_module_eeprom(struct efx_nic *efx, struct ethtool_eeprom *ee, u8 *data) { int rc; ssize_t space_remaining = ee->len; unsigned int page_off; bool ignore_missing; int num_pages; int page; switch (efx_mcdi_phy_module_type(efx)) { case MC_CMD_MEDIA_SFP_PLUS: num_pages = efx_mcdi_phy_sff_8472_level(efx) > 0 ? SFF_8472_NUM_PAGES : SFF_8079_NUM_PAGES; page = 0; ignore_missing = false; break; case MC_CMD_MEDIA_QSFP_PLUS: num_pages = SFF_8436_NUM_PAGES; page = -1; /* We obtain the lower page by asking for -1. */ ignore_missing = true; /* Ignore missing pages after page 0. */ break; default: return -EOPNOTSUPP; } page_off = ee->offset % SFP_PAGE_SIZE; page += ee->offset / SFP_PAGE_SIZE; while (space_remaining && (page < num_pages)) { rc = efx_mcdi_phy_get_module_eeprom_page(efx, page, data, page_off, space_remaining); if (rc > 0) { space_remaining -= rc; data += rc; page_off = 0; page++; } else if (rc == 0) { space_remaining = 0; } else if (ignore_missing && (page > 0)) { int intended_size = SFP_PAGE_SIZE - page_off; space_remaining -= intended_size; if (space_remaining < 0) { space_remaining = 0; } else { memset(data, 0, intended_size); data += intended_size; page_off = 0; page++; rc = 0; } } else { return rc; } } return 0; } static int efx_mcdi_phy_get_module_info(struct efx_nic *efx, struct ethtool_modinfo *modinfo) { int sff_8472_level; int diag_type; switch (efx_mcdi_phy_module_type(efx)) { case MC_CMD_MEDIA_SFP_PLUS: sff_8472_level = efx_mcdi_phy_sff_8472_level(efx); /* If we can't read the diagnostics level we have none. */ if (sff_8472_level < 0) return -EOPNOTSUPP; /* Check if this module requires the (unsupported) address * change operation. */ diag_type = efx_mcdi_phy_diag_type(efx); if ((sff_8472_level == 0) || (diag_type & SFF_DIAG_ADDR_CHANGE)) { modinfo->type = ETH_MODULE_SFF_8079; modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN; } else { modinfo->type = ETH_MODULE_SFF_8472; modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN; } break; case MC_CMD_MEDIA_QSFP_PLUS: modinfo->type = ETH_MODULE_SFF_8436; modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN; break; default: return -EOPNOTSUPP; } return 0; } 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_link_ksettings = efx_mcdi_phy_get_link_ksettings, .set_link_ksettings = efx_mcdi_phy_set_link_ksettings, .get_fecparam = efx_mcdi_phy_get_fecparam, .set_fecparam = efx_mcdi_phy_set_fecparam, .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, [MCDI_EVENT_LINKCHANGE_SPEED_40G] = 40000, [MCDI_EVENT_LINKCHANGE_SPEED_25G] = 25000, [MCDI_EVENT_LINKCHANGE_SPEED_50G] = 50000, [MCDI_EVENT_LINKCHANGE_SPEED_100G] = 100000, }; 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_WARN_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); /* This has no effect on EF10 */ ether_addr_copy(MCDI_PTR(cmdbytes, SET_MAC_IN_ADDR), efx->net_dev->dev_addr); 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); MCDI_POPULATE_DWORD_1(cmdbytes, SET_MAC_IN_FLAGS, SET_MAC_IN_FLAG_INCLUDE_FCS, !!(efx->net_dev->features & NETIF_F_RXFCS)); 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) return true; return MCDI_DWORD(outbuf, GET_LINK_OUT_MAC_FAULT) != 0; } enum efx_stats_action { EFX_STATS_ENABLE, EFX_STATS_DISABLE, EFX_STATS_PULL, }; static int efx_mcdi_mac_stats(struct efx_nic *efx, enum efx_stats_action action, int clear) { MCDI_DECLARE_BUF(inbuf, MC_CMD_MAC_STATS_IN_LEN); int rc; int change = action == EFX_STATS_PULL ? 0 : 1; int enable = action == EFX_STATS_ENABLE ? 1 : 0; int period = action == EFX_STATS_ENABLE ? 1000 : 0; dma_addr_t dma_addr = efx->stats_buffer.dma_addr; u32 dma_len = action != EFX_STATS_DISABLE ? efx->num_mac_stats * sizeof(u64) : 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, change, 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); if (efx_nic_rev(efx) >= EFX_REV_HUNT_A0) { struct efx_ef10_nic_data *nic_data = efx->nic_data; MCDI_SET_DWORD(inbuf, MAC_STATS_IN_PORT_ID, nic_data->vport_id); } rc = efx_mcdi_rpc_quiet(efx, MC_CMD_MAC_STATS, inbuf, sizeof(inbuf), NULL, 0, NULL); /* Expect ENOENT if DMA queues have not been set up */ if (rc && (rc != -ENOENT || atomic_read(&efx->active_queues))) efx_mcdi_display_error(efx, MC_CMD_MAC_STATS, sizeof(inbuf), NULL, 0, rc); return rc; } void efx_mcdi_mac_start_stats(struct efx_nic *efx) { __le64 *dma_stats = efx->stats_buffer.addr; dma_stats[efx->num_mac_stats - 1] = EFX_MC_STATS_GENERATION_INVALID; efx_mcdi_mac_stats(efx, EFX_STATS_ENABLE, 0); } void efx_mcdi_mac_stop_stats(struct efx_nic *efx) { efx_mcdi_mac_stats(efx, EFX_STATS_DISABLE, 0); } #define EFX_MAC_STATS_WAIT_US 100 #define EFX_MAC_STATS_WAIT_ATTEMPTS 10 void efx_mcdi_mac_pull_stats(struct efx_nic *efx) { __le64 *dma_stats = efx->stats_buffer.addr; int attempts = EFX_MAC_STATS_WAIT_ATTEMPTS; dma_stats[efx->num_mac_stats - 1] = EFX_MC_STATS_GENERATION_INVALID; efx_mcdi_mac_stats(efx, EFX_STATS_PULL, 0); while (dma_stats[efx->num_mac_stats - 1] == EFX_MC_STATS_GENERATION_INVALID && attempts-- != 0) udelay(EFX_MAC_STATS_WAIT_US); } 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, efx->num_mac_stats * 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_DISABLE, 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); }