2020-01-09 15:43:44 +00:00
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// 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 2018 Solarflare Communications Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation, incorporated herein by reference.
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*/
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#include "mcdi_port_common.h"
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int efx_mcdi_get_phy_cfg(struct efx_nic *efx, struct efx_mcdi_phy_data *cfg)
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{
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MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_CFG_OUT_LEN);
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size_t outlen;
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int rc;
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BUILD_BUG_ON(MC_CMD_GET_PHY_CFG_IN_LEN != 0);
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BUILD_BUG_ON(MC_CMD_GET_PHY_CFG_OUT_NAME_LEN != sizeof(cfg->name));
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rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_CFG, NULL, 0,
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outbuf, sizeof(outbuf), &outlen);
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if (rc)
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goto fail;
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if (outlen < MC_CMD_GET_PHY_CFG_OUT_LEN) {
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rc = -EIO;
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goto fail;
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}
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cfg->flags = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_FLAGS);
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cfg->type = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_TYPE);
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cfg->supported_cap =
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MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_SUPPORTED_CAP);
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cfg->channel = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_CHANNEL);
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cfg->port = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_PRT);
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cfg->stats_mask = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_STATS_MASK);
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memcpy(cfg->name, MCDI_PTR(outbuf, GET_PHY_CFG_OUT_NAME),
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sizeof(cfg->name));
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cfg->media = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_MEDIA_TYPE);
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cfg->mmd_mask = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_MMD_MASK);
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memcpy(cfg->revision, MCDI_PTR(outbuf, GET_PHY_CFG_OUT_REVISION),
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sizeof(cfg->revision));
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return 0;
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fail:
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netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
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return rc;
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}
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void efx_link_set_advertising(struct efx_nic *efx,
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const unsigned long *advertising)
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{
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memcpy(efx->link_advertising, advertising,
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sizeof(__ETHTOOL_DECLARE_LINK_MODE_MASK()));
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efx->link_advertising[0] |= ADVERTISED_Autoneg;
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if (advertising[0] & ADVERTISED_Pause)
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efx->wanted_fc |= (EFX_FC_TX | EFX_FC_RX);
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else
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efx->wanted_fc &= ~(EFX_FC_TX | EFX_FC_RX);
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if (advertising[0] & ADVERTISED_Asym_Pause)
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efx->wanted_fc ^= EFX_FC_TX;
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}
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int efx_mcdi_set_link(struct efx_nic *efx, u32 capabilities,
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u32 flags, u32 loopback_mode, u32 loopback_speed)
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{
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MCDI_DECLARE_BUF(inbuf, MC_CMD_SET_LINK_IN_LEN);
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int rc;
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BUILD_BUG_ON(MC_CMD_SET_LINK_OUT_LEN != 0);
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MCDI_SET_DWORD(inbuf, SET_LINK_IN_CAP, capabilities);
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MCDI_SET_DWORD(inbuf, SET_LINK_IN_FLAGS, flags);
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MCDI_SET_DWORD(inbuf, SET_LINK_IN_LOOPBACK_MODE, loopback_mode);
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MCDI_SET_DWORD(inbuf, SET_LINK_IN_LOOPBACK_SPEED, loopback_speed);
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rc = efx_mcdi_rpc(efx, MC_CMD_SET_LINK, inbuf, sizeof(inbuf),
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NULL, 0, NULL);
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return rc;
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}
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int efx_mcdi_loopback_modes(struct efx_nic *efx, u64 *loopback_modes)
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{
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MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LOOPBACK_MODES_OUT_LEN);
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size_t outlen;
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int rc;
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rc = efx_mcdi_rpc(efx, MC_CMD_GET_LOOPBACK_MODES, NULL, 0,
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outbuf, sizeof(outbuf), &outlen);
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if (rc)
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goto fail;
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if (outlen < (MC_CMD_GET_LOOPBACK_MODES_OUT_SUGGESTED_OFST +
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MC_CMD_GET_LOOPBACK_MODES_OUT_SUGGESTED_LEN)) {
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rc = -EIO;
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goto fail;
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}
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*loopback_modes = MCDI_QWORD(outbuf, GET_LOOPBACK_MODES_OUT_SUGGESTED);
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return 0;
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fail:
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netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
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return rc;
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}
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void mcdi_to_ethtool_linkset(u32 media, u32 cap, unsigned long *linkset)
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{
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#define SET_BIT(name) __set_bit(ETHTOOL_LINK_MODE_ ## name ## _BIT, \
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linkset)
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bitmap_zero(linkset, __ETHTOOL_LINK_MODE_MASK_NBITS);
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switch (media) {
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case MC_CMD_MEDIA_KX4:
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SET_BIT(Backplane);
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if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))
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SET_BIT(1000baseKX_Full);
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if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))
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SET_BIT(10000baseKX4_Full);
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if (cap & (1 << MC_CMD_PHY_CAP_40000FDX_LBN))
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SET_BIT(40000baseKR4_Full);
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break;
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case MC_CMD_MEDIA_XFP:
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case MC_CMD_MEDIA_SFP_PLUS:
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case MC_CMD_MEDIA_QSFP_PLUS:
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SET_BIT(FIBRE);
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if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))
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SET_BIT(1000baseT_Full);
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if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))
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SET_BIT(10000baseT_Full);
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if (cap & (1 << MC_CMD_PHY_CAP_40000FDX_LBN))
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SET_BIT(40000baseCR4_Full);
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if (cap & (1 << MC_CMD_PHY_CAP_100000FDX_LBN))
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SET_BIT(100000baseCR4_Full);
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if (cap & (1 << MC_CMD_PHY_CAP_25000FDX_LBN))
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SET_BIT(25000baseCR_Full);
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if (cap & (1 << MC_CMD_PHY_CAP_50000FDX_LBN))
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SET_BIT(50000baseCR2_Full);
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break;
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case MC_CMD_MEDIA_BASE_T:
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SET_BIT(TP);
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if (cap & (1 << MC_CMD_PHY_CAP_10HDX_LBN))
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SET_BIT(10baseT_Half);
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if (cap & (1 << MC_CMD_PHY_CAP_10FDX_LBN))
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SET_BIT(10baseT_Full);
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if (cap & (1 << MC_CMD_PHY_CAP_100HDX_LBN))
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SET_BIT(100baseT_Half);
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if (cap & (1 << MC_CMD_PHY_CAP_100FDX_LBN))
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SET_BIT(100baseT_Full);
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if (cap & (1 << MC_CMD_PHY_CAP_1000HDX_LBN))
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SET_BIT(1000baseT_Half);
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if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))
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SET_BIT(1000baseT_Full);
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if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))
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SET_BIT(10000baseT_Full);
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break;
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}
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if (cap & (1 << MC_CMD_PHY_CAP_PAUSE_LBN))
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SET_BIT(Pause);
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if (cap & (1 << MC_CMD_PHY_CAP_ASYM_LBN))
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SET_BIT(Asym_Pause);
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if (cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
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SET_BIT(Autoneg);
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#undef SET_BIT
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}
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2020-01-09 15:43:59 +00:00
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u32 ethtool_linkset_to_mcdi_cap(const unsigned long *linkset)
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{
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u32 result = 0;
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#define TEST_BIT(name) test_bit(ETHTOOL_LINK_MODE_ ## name ## _BIT, \
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linkset)
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if (TEST_BIT(10baseT_Half))
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result |= (1 << MC_CMD_PHY_CAP_10HDX_LBN);
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if (TEST_BIT(10baseT_Full))
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result |= (1 << MC_CMD_PHY_CAP_10FDX_LBN);
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if (TEST_BIT(100baseT_Half))
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result |= (1 << MC_CMD_PHY_CAP_100HDX_LBN);
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if (TEST_BIT(100baseT_Full))
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result |= (1 << MC_CMD_PHY_CAP_100FDX_LBN);
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if (TEST_BIT(1000baseT_Half))
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result |= (1 << MC_CMD_PHY_CAP_1000HDX_LBN);
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if (TEST_BIT(1000baseT_Full) || TEST_BIT(1000baseKX_Full))
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result |= (1 << MC_CMD_PHY_CAP_1000FDX_LBN);
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if (TEST_BIT(10000baseT_Full) || TEST_BIT(10000baseKX4_Full))
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result |= (1 << MC_CMD_PHY_CAP_10000FDX_LBN);
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if (TEST_BIT(40000baseCR4_Full) || TEST_BIT(40000baseKR4_Full))
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result |= (1 << MC_CMD_PHY_CAP_40000FDX_LBN);
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if (TEST_BIT(100000baseCR4_Full))
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result |= (1 << MC_CMD_PHY_CAP_100000FDX_LBN);
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if (TEST_BIT(25000baseCR_Full))
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result |= (1 << MC_CMD_PHY_CAP_25000FDX_LBN);
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if (TEST_BIT(50000baseCR2_Full))
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result |= (1 << MC_CMD_PHY_CAP_50000FDX_LBN);
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if (TEST_BIT(Pause))
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result |= (1 << MC_CMD_PHY_CAP_PAUSE_LBN);
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if (TEST_BIT(Asym_Pause))
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result |= (1 << MC_CMD_PHY_CAP_ASYM_LBN);
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if (TEST_BIT(Autoneg))
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result |= (1 << MC_CMD_PHY_CAP_AN_LBN);
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#undef TEST_BIT
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return result;
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}
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u32 efx_get_mcdi_phy_flags(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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enum efx_phy_mode mode, supported;
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u32 flags;
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/* TODO: Advertise the capabilities supported by this PHY */
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supported = 0;
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if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_TXDIS_LBN))
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supported |= PHY_MODE_TX_DISABLED;
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if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_LOWPOWER_LBN))
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supported |= PHY_MODE_LOW_POWER;
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if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_POWEROFF_LBN))
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supported |= PHY_MODE_OFF;
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mode = efx->phy_mode & supported;
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flags = 0;
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if (mode & PHY_MODE_TX_DISABLED)
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flags |= (1 << MC_CMD_SET_LINK_IN_TXDIS_LBN);
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if (mode & PHY_MODE_LOW_POWER)
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flags |= (1 << MC_CMD_SET_LINK_IN_LOWPOWER_LBN);
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if (mode & PHY_MODE_OFF)
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flags |= (1 << MC_CMD_SET_LINK_IN_POWEROFF_LBN);
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return flags;
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}
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u8 mcdi_to_ethtool_media(u32 media)
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{
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switch (media) {
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case MC_CMD_MEDIA_XAUI:
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case MC_CMD_MEDIA_CX4:
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case MC_CMD_MEDIA_KX4:
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return PORT_OTHER;
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case MC_CMD_MEDIA_XFP:
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case MC_CMD_MEDIA_SFP_PLUS:
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case MC_CMD_MEDIA_QSFP_PLUS:
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return PORT_FIBRE;
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case MC_CMD_MEDIA_BASE_T:
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return PORT_TP;
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default:
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return PORT_OTHER;
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}
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}
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2020-01-09 15:43:44 +00:00
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void efx_mcdi_phy_decode_link(struct efx_nic *efx,
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struct efx_link_state *link_state,
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u32 speed, u32 flags, u32 fcntl)
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{
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switch (fcntl) {
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case MC_CMD_FCNTL_AUTO:
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WARN_ON(1); /* This is not a link mode */
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link_state->fc = EFX_FC_AUTO | EFX_FC_TX | EFX_FC_RX;
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break;
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case MC_CMD_FCNTL_BIDIR:
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link_state->fc = EFX_FC_TX | EFX_FC_RX;
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break;
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case MC_CMD_FCNTL_RESPOND:
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link_state->fc = EFX_FC_RX;
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break;
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default:
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WARN_ON(1);
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/* Fall through */
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case MC_CMD_FCNTL_OFF:
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link_state->fc = 0;
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break;
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}
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link_state->up = !!(flags & (1 << MC_CMD_GET_LINK_OUT_LINK_UP_LBN));
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link_state->fd = !!(flags & (1 << MC_CMD_GET_LINK_OUT_FULL_DUPLEX_LBN));
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link_state->speed = speed;
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}
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2020-01-09 15:43:59 +00:00
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/* The semantics of the ethtool FEC mode bitmask are not well defined,
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* particularly the meaning of combinations of bits. Which means we get to
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* define our own semantics, as follows:
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* OFF overrides any other bits, and means "disable all FEC" (with the
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* exception of 25G KR4/CR4, where it is not possible to reject it if AN
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* partner requests it).
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* AUTO on its own means use cable requirements and link partner autoneg with
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* fw-default preferences for the cable type.
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* AUTO and either RS or BASER means use the specified FEC type if cable and
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* link partner support it, otherwise autoneg/fw-default.
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* RS or BASER alone means use the specified FEC type if cable and link partner
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* support it and either requests it, otherwise no FEC.
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* Both RS and BASER (whether AUTO or not) means use FEC if cable and link
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* partner support it, preferring RS to BASER.
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*/
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u32 ethtool_fec_caps_to_mcdi(u32 ethtool_cap)
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{
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u32 ret = 0;
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if (ethtool_cap & ETHTOOL_FEC_OFF)
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return 0;
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if (ethtool_cap & ETHTOOL_FEC_AUTO)
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ret |= (1 << MC_CMD_PHY_CAP_BASER_FEC_LBN) |
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(1 << MC_CMD_PHY_CAP_25G_BASER_FEC_LBN) |
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(1 << MC_CMD_PHY_CAP_RS_FEC_LBN);
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if (ethtool_cap & ETHTOOL_FEC_RS)
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ret |= (1 << MC_CMD_PHY_CAP_RS_FEC_LBN) |
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(1 << MC_CMD_PHY_CAP_RS_FEC_REQUESTED_LBN);
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if (ethtool_cap & ETHTOOL_FEC_BASER)
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ret |= (1 << MC_CMD_PHY_CAP_BASER_FEC_LBN) |
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(1 << MC_CMD_PHY_CAP_25G_BASER_FEC_LBN) |
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(1 << MC_CMD_PHY_CAP_BASER_FEC_REQUESTED_LBN) |
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(1 << MC_CMD_PHY_CAP_25G_BASER_FEC_REQUESTED_LBN);
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return ret;
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}
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/* Invert ethtool_fec_caps_to_mcdi. There are two combinations that function
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* can never produce, (baser xor rs) and neither req; the implementation below
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* maps both of those to AUTO. This should never matter, and it's not clear
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* what a better mapping would be anyway.
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*/
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u32 mcdi_fec_caps_to_ethtool(u32 caps, bool is_25g)
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|
|
|
{
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|
|
|
bool rs = caps & (1 << MC_CMD_PHY_CAP_RS_FEC_LBN),
|
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|
|
rs_req = caps & (1 << MC_CMD_PHY_CAP_RS_FEC_REQUESTED_LBN),
|
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|
|
baser = is_25g ? caps & (1 << MC_CMD_PHY_CAP_25G_BASER_FEC_LBN)
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|
: caps & (1 << MC_CMD_PHY_CAP_BASER_FEC_LBN),
|
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baser_req = is_25g ? caps & (1 << MC_CMD_PHY_CAP_25G_BASER_FEC_REQUESTED_LBN)
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|
: caps & (1 << MC_CMD_PHY_CAP_BASER_FEC_REQUESTED_LBN);
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|
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|
|
if (!baser && !rs)
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|
return ETHTOOL_FEC_OFF;
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return (rs_req ? ETHTOOL_FEC_RS : 0) |
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(baser_req ? ETHTOOL_FEC_BASER : 0) |
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(baser == baser_req && rs == rs_req ? 0 : ETHTOOL_FEC_AUTO);
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|
}
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