diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/sfc/mcdi_phy.c | 146 |
1 files changed, 144 insertions, 2 deletions
diff --git a/drivers/net/sfc/mcdi_phy.c b/drivers/net/sfc/mcdi_phy.c index 5d344874f29..6032c0e1f1f 100644 --- a/drivers/net/sfc/mcdi_phy.c +++ b/drivers/net/sfc/mcdi_phy.c @@ -17,6 +17,8 @@ #include "mcdi.h" #include "mcdi_pcol.h" #include "mdio_10g.h" +#include "nic.h" +#include "selftest.h" struct efx_mcdi_phy_cfg { u32 flags; @@ -594,6 +596,146 @@ static int efx_mcdi_phy_test_alive(struct efx_nic *efx) 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; + u8 *buf, *ptr; + int rc; + + buf = kzalloc(0x100, GFP_KERNEL); + if (buf == NULL) + return -ENOMEM; + + BUILD_BUG_ON(MC_CMD_START_BIST_OUT_LEN != 0); + MCDI_SET_DWORD(buf, START_BIST_IN_TYPE, bist_mode); + rc = efx_mcdi_rpc(efx, MC_CMD_START_BIST, buf, 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, + buf, 0x100, &outlen); + if (rc) + goto out; + + status = MCDI_DWORD(buf, 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(buf, 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: + kfree(buf); + + return rc; +} + +static int efx_mcdi_phy_run_tests(struct efx_nic *efx, int *results, + unsigned flags) +{ + struct efx_mcdi_phy_cfg *phy_cfg = efx->phy_data; + u32 mode; + int rc; + + if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_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_BIST_CABLE_SHORT_LBN)) { + if ((flags & ETH_TEST_FL_OFFLINE) && + (phy_cfg->flags & + (1 << MC_CMD_GET_PHY_CFG_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_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; +} + +const char *efx_mcdi_phy_test_name(struct efx_nic *efx, unsigned int index) +{ + struct efx_mcdi_phy_cfg *phy_cfg = efx->phy_data; + + if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_BIST_LBN)) { + if (index == 0) + return "bist"; + --index; + } + + if (phy_cfg->flags & ((1 << MC_CMD_GET_PHY_CFG_BIST_CABLE_SHORT_LBN) | + (1 << MC_CMD_GET_PHY_CFG_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; +} + struct efx_phy_operations efx_mcdi_phy_ops = { .probe = efx_mcdi_phy_probe, .init = efx_port_dummy_op_int, @@ -604,6 +746,6 @@ struct efx_phy_operations efx_mcdi_phy_ops = { .get_settings = efx_mcdi_phy_get_settings, .set_settings = efx_mcdi_phy_set_settings, .test_alive = efx_mcdi_phy_test_alive, - .run_tests = NULL, - .test_name = NULL, + .run_tests = efx_mcdi_phy_run_tests, + .test_name = efx_mcdi_phy_test_name, }; |