806 lines
22 KiB
C
806 lines
22 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/****************************************************************************
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* Driver for Solarflare network controllers and boards
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* Copyright 2009-2013 Solarflare Communications Inc.
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*/
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/*
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* Driver for PHY related operations via MCDI.
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*/
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#include <linux/slab.h>
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#include "efx.h"
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#include "mcdi.h"
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#include "mcdi_pcol.h"
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#include "nic.h"
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#include "selftest.h"
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#include "mcdi_port_common.h"
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static int efx_mcdi_mdio_read(struct net_device *net_dev,
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int prtad, int devad, u16 addr)
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{
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struct efx_nic *efx = netdev_priv(net_dev);
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MCDI_DECLARE_BUF(inbuf, MC_CMD_MDIO_READ_IN_LEN);
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MCDI_DECLARE_BUF(outbuf, MC_CMD_MDIO_READ_OUT_LEN);
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size_t outlen;
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int rc;
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MCDI_SET_DWORD(inbuf, MDIO_READ_IN_BUS, efx->mdio_bus);
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MCDI_SET_DWORD(inbuf, MDIO_READ_IN_PRTAD, prtad);
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MCDI_SET_DWORD(inbuf, MDIO_READ_IN_DEVAD, devad);
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MCDI_SET_DWORD(inbuf, MDIO_READ_IN_ADDR, addr);
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rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_READ, inbuf, sizeof(inbuf),
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outbuf, sizeof(outbuf), &outlen);
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if (rc)
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return rc;
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if (MCDI_DWORD(outbuf, MDIO_READ_OUT_STATUS) !=
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MC_CMD_MDIO_STATUS_GOOD)
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return -EIO;
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return (u16)MCDI_DWORD(outbuf, MDIO_READ_OUT_VALUE);
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}
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static int efx_mcdi_mdio_write(struct net_device *net_dev,
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int prtad, int devad, u16 addr, u16 value)
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{
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struct efx_nic *efx = netdev_priv(net_dev);
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MCDI_DECLARE_BUF(inbuf, MC_CMD_MDIO_WRITE_IN_LEN);
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MCDI_DECLARE_BUF(outbuf, MC_CMD_MDIO_WRITE_OUT_LEN);
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size_t outlen;
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int rc;
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MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_BUS, efx->mdio_bus);
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MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_PRTAD, prtad);
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MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_DEVAD, devad);
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MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_ADDR, addr);
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MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_VALUE, value);
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rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_WRITE, inbuf, sizeof(inbuf),
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outbuf, sizeof(outbuf), &outlen);
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if (rc)
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return rc;
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if (MCDI_DWORD(outbuf, MDIO_WRITE_OUT_STATUS) !=
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MC_CMD_MDIO_STATUS_GOOD)
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return -EIO;
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return 0;
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}
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static int efx_mcdi_phy_probe(struct efx_nic *efx)
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{
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struct efx_mcdi_phy_data *phy_data;
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MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
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u32 caps;
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int rc;
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/* Initialise and populate phy_data */
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phy_data = kzalloc(sizeof(*phy_data), GFP_KERNEL);
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if (phy_data == NULL)
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return -ENOMEM;
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rc = efx_mcdi_get_phy_cfg(efx, phy_data);
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if (rc != 0)
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goto fail;
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/* Read initial link advertisement */
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BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
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rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
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outbuf, sizeof(outbuf), NULL);
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if (rc)
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goto fail;
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/* Fill out nic state */
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efx->phy_data = phy_data;
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efx->phy_type = phy_data->type;
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efx->mdio_bus = phy_data->channel;
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efx->mdio.prtad = phy_data->port;
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efx->mdio.mmds = phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22);
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efx->mdio.mode_support = 0;
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if (phy_data->mmd_mask & (1 << MC_CMD_MMD_CLAUSE22))
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efx->mdio.mode_support |= MDIO_SUPPORTS_C22;
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if (phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22))
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efx->mdio.mode_support |= MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
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caps = MCDI_DWORD(outbuf, GET_LINK_OUT_CAP);
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if (caps & (1 << MC_CMD_PHY_CAP_AN_LBN))
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mcdi_to_ethtool_linkset(phy_data->media, caps,
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efx->link_advertising);
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else
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phy_data->forced_cap = caps;
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/* Assert that we can map efx -> mcdi loopback modes */
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BUILD_BUG_ON(LOOPBACK_NONE != MC_CMD_LOOPBACK_NONE);
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BUILD_BUG_ON(LOOPBACK_DATA != MC_CMD_LOOPBACK_DATA);
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BUILD_BUG_ON(LOOPBACK_GMAC != MC_CMD_LOOPBACK_GMAC);
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BUILD_BUG_ON(LOOPBACK_XGMII != MC_CMD_LOOPBACK_XGMII);
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BUILD_BUG_ON(LOOPBACK_XGXS != MC_CMD_LOOPBACK_XGXS);
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BUILD_BUG_ON(LOOPBACK_XAUI != MC_CMD_LOOPBACK_XAUI);
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BUILD_BUG_ON(LOOPBACK_GMII != MC_CMD_LOOPBACK_GMII);
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BUILD_BUG_ON(LOOPBACK_SGMII != MC_CMD_LOOPBACK_SGMII);
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BUILD_BUG_ON(LOOPBACK_XGBR != MC_CMD_LOOPBACK_XGBR);
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BUILD_BUG_ON(LOOPBACK_XFI != MC_CMD_LOOPBACK_XFI);
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BUILD_BUG_ON(LOOPBACK_XAUI_FAR != MC_CMD_LOOPBACK_XAUI_FAR);
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BUILD_BUG_ON(LOOPBACK_GMII_FAR != MC_CMD_LOOPBACK_GMII_FAR);
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BUILD_BUG_ON(LOOPBACK_SGMII_FAR != MC_CMD_LOOPBACK_SGMII_FAR);
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BUILD_BUG_ON(LOOPBACK_XFI_FAR != MC_CMD_LOOPBACK_XFI_FAR);
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BUILD_BUG_ON(LOOPBACK_GPHY != MC_CMD_LOOPBACK_GPHY);
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BUILD_BUG_ON(LOOPBACK_PHYXS != MC_CMD_LOOPBACK_PHYXS);
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BUILD_BUG_ON(LOOPBACK_PCS != MC_CMD_LOOPBACK_PCS);
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BUILD_BUG_ON(LOOPBACK_PMAPMD != MC_CMD_LOOPBACK_PMAPMD);
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BUILD_BUG_ON(LOOPBACK_XPORT != MC_CMD_LOOPBACK_XPORT);
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BUILD_BUG_ON(LOOPBACK_XGMII_WS != MC_CMD_LOOPBACK_XGMII_WS);
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BUILD_BUG_ON(LOOPBACK_XAUI_WS != MC_CMD_LOOPBACK_XAUI_WS);
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BUILD_BUG_ON(LOOPBACK_XAUI_WS_FAR != MC_CMD_LOOPBACK_XAUI_WS_FAR);
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BUILD_BUG_ON(LOOPBACK_XAUI_WS_NEAR != MC_CMD_LOOPBACK_XAUI_WS_NEAR);
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BUILD_BUG_ON(LOOPBACK_GMII_WS != MC_CMD_LOOPBACK_GMII_WS);
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BUILD_BUG_ON(LOOPBACK_XFI_WS != MC_CMD_LOOPBACK_XFI_WS);
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BUILD_BUG_ON(LOOPBACK_XFI_WS_FAR != MC_CMD_LOOPBACK_XFI_WS_FAR);
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BUILD_BUG_ON(LOOPBACK_PHYXS_WS != MC_CMD_LOOPBACK_PHYXS_WS);
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rc = efx_mcdi_loopback_modes(efx, &efx->loopback_modes);
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if (rc != 0)
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goto fail;
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/* The MC indicates that LOOPBACK_NONE is a valid loopback mode,
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* but by convention we don't */
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efx->loopback_modes &= ~(1 << LOOPBACK_NONE);
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/* Set the initial link mode */
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efx_mcdi_phy_decode_link(
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efx, &efx->link_state,
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MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED),
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MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS),
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MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL));
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/* Record the initial FEC configuration (or nearest approximation
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* representable in the ethtool configuration space)
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*/
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efx->fec_config = mcdi_fec_caps_to_ethtool(caps,
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efx->link_state.speed == 25000 ||
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efx->link_state.speed == 50000);
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/* Default to Autonegotiated flow control if the PHY supports it */
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efx->wanted_fc = EFX_FC_RX | EFX_FC_TX;
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if (phy_data->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
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efx->wanted_fc |= EFX_FC_AUTO;
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efx_link_set_wanted_fc(efx, efx->wanted_fc);
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return 0;
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fail:
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kfree(phy_data);
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return rc;
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}
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int efx_mcdi_port_reconfigure(struct efx_nic *efx)
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{
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struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
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u32 caps = (efx->link_advertising[0] ?
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ethtool_linkset_to_mcdi_cap(efx->link_advertising) :
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phy_cfg->forced_cap);
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caps |= ethtool_fec_caps_to_mcdi(efx->fec_config);
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return efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),
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efx->loopback_mode, 0);
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}
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static void efx_mcdi_phy_remove(struct efx_nic *efx)
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{
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struct efx_mcdi_phy_data *phy_data = efx->phy_data;
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efx->phy_data = NULL;
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kfree(phy_data);
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}
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static void efx_mcdi_phy_get_link_ksettings(struct efx_nic *efx,
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struct ethtool_link_ksettings *cmd)
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{
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struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
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MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
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int rc;
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cmd->base.speed = efx->link_state.speed;
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cmd->base.duplex = efx->link_state.fd;
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cmd->base.port = mcdi_to_ethtool_media(phy_cfg->media);
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cmd->base.phy_address = phy_cfg->port;
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cmd->base.autoneg = !!(efx->link_advertising[0] & ADVERTISED_Autoneg);
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cmd->base.mdio_support = (efx->mdio.mode_support &
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(MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22));
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mcdi_to_ethtool_linkset(phy_cfg->media, phy_cfg->supported_cap,
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cmd->link_modes.supported);
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memcpy(cmd->link_modes.advertising, efx->link_advertising,
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sizeof(__ETHTOOL_DECLARE_LINK_MODE_MASK()));
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BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
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rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
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outbuf, sizeof(outbuf), NULL);
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if (rc)
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return;
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mcdi_to_ethtool_linkset(phy_cfg->media,
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MCDI_DWORD(outbuf, GET_LINK_OUT_LP_CAP),
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cmd->link_modes.lp_advertising);
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}
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static int
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efx_mcdi_phy_set_link_ksettings(struct efx_nic *efx,
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const struct ethtool_link_ksettings *cmd)
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{
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struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
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u32 caps;
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int rc;
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if (cmd->base.autoneg) {
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caps = (ethtool_linkset_to_mcdi_cap(cmd->link_modes.advertising) |
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1 << MC_CMD_PHY_CAP_AN_LBN);
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} else if (cmd->base.duplex) {
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switch (cmd->base.speed) {
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case 10: caps = 1 << MC_CMD_PHY_CAP_10FDX_LBN; break;
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case 100: caps = 1 << MC_CMD_PHY_CAP_100FDX_LBN; break;
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case 1000: caps = 1 << MC_CMD_PHY_CAP_1000FDX_LBN; break;
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case 10000: caps = 1 << MC_CMD_PHY_CAP_10000FDX_LBN; break;
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case 40000: caps = 1 << MC_CMD_PHY_CAP_40000FDX_LBN; break;
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case 100000: caps = 1 << MC_CMD_PHY_CAP_100000FDX_LBN; break;
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case 25000: caps = 1 << MC_CMD_PHY_CAP_25000FDX_LBN; break;
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case 50000: caps = 1 << MC_CMD_PHY_CAP_50000FDX_LBN; break;
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default: return -EINVAL;
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}
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} else {
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switch (cmd->base.speed) {
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case 10: caps = 1 << MC_CMD_PHY_CAP_10HDX_LBN; break;
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case 100: caps = 1 << MC_CMD_PHY_CAP_100HDX_LBN; break;
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case 1000: caps = 1 << MC_CMD_PHY_CAP_1000HDX_LBN; break;
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default: return -EINVAL;
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}
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}
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caps |= ethtool_fec_caps_to_mcdi(efx->fec_config);
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rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),
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efx->loopback_mode, 0);
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if (rc)
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return rc;
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if (cmd->base.autoneg) {
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efx_link_set_advertising(efx, cmd->link_modes.advertising);
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phy_cfg->forced_cap = 0;
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} else {
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efx_link_clear_advertising(efx);
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phy_cfg->forced_cap = caps;
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}
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return 0;
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}
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static int efx_mcdi_phy_set_fecparam(struct efx_nic *efx,
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const struct ethtool_fecparam *fec)
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{
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struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
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u32 caps;
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int rc;
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/* Work out what efx_mcdi_phy_set_link_ksettings() would produce from
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* saved advertising bits
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*/
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if (test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, efx->link_advertising))
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caps = (ethtool_linkset_to_mcdi_cap(efx->link_advertising) |
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1 << MC_CMD_PHY_CAP_AN_LBN);
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else
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caps = phy_cfg->forced_cap;
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caps |= ethtool_fec_caps_to_mcdi(fec->fec);
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rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),
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efx->loopback_mode, 0);
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if (rc)
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return rc;
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/* Record the new FEC setting for subsequent set_link calls */
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efx->fec_config = fec->fec;
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return 0;
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}
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static const char *const mcdi_sft9001_cable_diag_names[] = {
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"cable.pairA.length",
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"cable.pairB.length",
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"cable.pairC.length",
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"cable.pairD.length",
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"cable.pairA.status",
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"cable.pairB.status",
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"cable.pairC.status",
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"cable.pairD.status",
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};
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static int efx_mcdi_bist(struct efx_nic *efx, unsigned int bist_mode,
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int *results)
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{
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unsigned int retry, i, count = 0;
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size_t outlen;
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u32 status;
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MCDI_DECLARE_BUF(inbuf, MC_CMD_START_BIST_IN_LEN);
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MCDI_DECLARE_BUF(outbuf, MC_CMD_POLL_BIST_OUT_SFT9001_LEN);
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u8 *ptr;
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int rc;
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BUILD_BUG_ON(MC_CMD_START_BIST_OUT_LEN != 0);
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MCDI_SET_DWORD(inbuf, START_BIST_IN_TYPE, bist_mode);
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rc = efx_mcdi_rpc(efx, MC_CMD_START_BIST,
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inbuf, MC_CMD_START_BIST_IN_LEN, NULL, 0, NULL);
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if (rc)
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goto out;
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/* Wait up to 10s for BIST to finish */
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for (retry = 0; retry < 100; ++retry) {
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BUILD_BUG_ON(MC_CMD_POLL_BIST_IN_LEN != 0);
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rc = efx_mcdi_rpc(efx, MC_CMD_POLL_BIST, NULL, 0,
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outbuf, sizeof(outbuf), &outlen);
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if (rc)
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goto out;
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status = MCDI_DWORD(outbuf, POLL_BIST_OUT_RESULT);
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if (status != MC_CMD_POLL_BIST_RUNNING)
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goto finished;
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msleep(100);
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}
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rc = -ETIMEDOUT;
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goto out;
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finished:
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results[count++] = (status == MC_CMD_POLL_BIST_PASSED) ? 1 : -1;
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/* SFT9001 specific cable diagnostics output */
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if (efx->phy_type == PHY_TYPE_SFT9001B &&
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(bist_mode == MC_CMD_PHY_BIST_CABLE_SHORT ||
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bist_mode == MC_CMD_PHY_BIST_CABLE_LONG)) {
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ptr = MCDI_PTR(outbuf, POLL_BIST_OUT_SFT9001_CABLE_LENGTH_A);
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if (status == MC_CMD_POLL_BIST_PASSED &&
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outlen >= MC_CMD_POLL_BIST_OUT_SFT9001_LEN) {
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for (i = 0; i < 8; i++) {
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results[count + i] =
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EFX_DWORD_FIELD(((efx_dword_t *)ptr)[i],
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EFX_DWORD_0);
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}
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}
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count += 8;
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}
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rc = count;
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out:
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return rc;
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}
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static int efx_mcdi_phy_run_tests(struct efx_nic *efx, int *results,
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unsigned flags)
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{
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struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
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u32 mode;
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int rc;
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if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) {
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rc = efx_mcdi_bist(efx, MC_CMD_PHY_BIST, results);
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if (rc < 0)
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return rc;
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results += rc;
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}
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/* If we support both LONG and SHORT, then run each in response to
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* break or not. Otherwise, run the one we support */
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mode = 0;
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if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN)) {
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if ((flags & ETH_TEST_FL_OFFLINE) &&
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(phy_cfg->flags &
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(1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN)))
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mode = MC_CMD_PHY_BIST_CABLE_LONG;
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else
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mode = MC_CMD_PHY_BIST_CABLE_SHORT;
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} else if (phy_cfg->flags &
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(1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))
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mode = MC_CMD_PHY_BIST_CABLE_LONG;
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if (mode != 0) {
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rc = efx_mcdi_bist(efx, mode, results);
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if (rc < 0)
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return rc;
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results += rc;
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}
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return 0;
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}
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|
|
|
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;
|
|
}
|
|
|
|
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)
|
|
MCDI_SET_DWORD(inbuf, MAC_STATS_IN_PORT_ID, efx->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);
|
|
}
|