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117 lines
3.0 KiB
117 lines
3.0 KiB
// 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_port.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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u32 efx_mcdi_phy_get_caps(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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return phy_data->supported_cap; |
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} |
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bool efx_mcdi_mac_check_fault(struct efx_nic *efx) |
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{ |
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MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN); |
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size_t outlength; |
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int rc; |
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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), &outlength); |
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if (rc) |
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return true; |
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return MCDI_DWORD(outbuf, GET_LINK_OUT_MAC_FAULT) != 0; |
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} |
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int efx_mcdi_port_probe(struct efx_nic *efx) |
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{ |
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int rc; |
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/* Set up MDIO structure for PHY */ |
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efx->mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22; |
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efx->mdio.mdio_read = efx_mcdi_mdio_read; |
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efx->mdio.mdio_write = efx_mcdi_mdio_write; |
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/* Fill out MDIO structure, loopback modes, and initial link state */ |
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rc = efx_mcdi_phy_probe(efx); |
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if (rc != 0) |
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return rc; |
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return efx_mcdi_mac_init_stats(efx); |
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} |
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void efx_mcdi_port_remove(struct efx_nic *efx) |
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{ |
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efx_mcdi_phy_remove(efx); |
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efx_mcdi_mac_fini_stats(efx); |
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}
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