// 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 <linux/slab.h> #include "efx.h" #include "mcdi_port.h" #include "mcdi.h" #include "mcdi_pcol.h" #include "nic.h" #include "selftest.h" #include "mcdi_port_common.h" 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; } 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; } int efx_mcdi_port_probe(struct efx_nic *efx) { int rc; /* 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_mcdi_phy_probe(efx); if (rc != 0) return rc; return efx_mcdi_mac_init_stats(efx); } void efx_mcdi_port_remove(struct efx_nic *efx) { efx_mcdi_phy_remove(efx); efx_mcdi_mac_fini_stats(efx); }