sfc: Add Siena PHY BIST and cable diagnostic support
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Steve Hodgson
David S. Miller
parent
c28884c574
commit
affaf485ca
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@ -17,6 +17,8 @@
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#include "mcdi.h"
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#include "mcdi_pcol.h"
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#include "mdio_10g.h"
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#include "nic.h"
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#include "selftest.h"
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struct efx_mcdi_phy_cfg {
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u32 flags;
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@ -594,6 +596,146 @@ static int efx_mcdi_phy_test_alive(struct efx_nic *efx)
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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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u8 *buf, *ptr;
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int rc;
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buf = kzalloc(0x100, GFP_KERNEL);
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if (buf == NULL)
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return -ENOMEM;
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BUILD_BUG_ON(MC_CMD_START_BIST_OUT_LEN != 0);
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MCDI_SET_DWORD(buf, START_BIST_IN_TYPE, bist_mode);
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rc = efx_mcdi_rpc(efx, MC_CMD_START_BIST, buf, MC_CMD_START_BIST_IN_LEN,
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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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buf, 0x100, &outlen);
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if (rc)
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goto out;
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status = MCDI_DWORD(buf, 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(buf, 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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kfree(buf);
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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_cfg *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_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_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_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_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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const char *efx_mcdi_phy_test_name(struct efx_nic *efx, unsigned int index)
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{
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struct efx_mcdi_phy_cfg *phy_cfg = efx->phy_data;
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if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_BIST_LBN)) {
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if (index == 0)
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return "bist";
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--index;
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}
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if (phy_cfg->flags & ((1 << MC_CMD_GET_PHY_CFG_BIST_CABLE_SHORT_LBN) |
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(1 << MC_CMD_GET_PHY_CFG_BIST_CABLE_LONG_LBN))) {
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if (index == 0)
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return "cable";
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--index;
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if (efx->phy_type == PHY_TYPE_SFT9001B) {
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if (index < ARRAY_SIZE(mcdi_sft9001_cable_diag_names))
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return mcdi_sft9001_cable_diag_names[index];
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index -= ARRAY_SIZE(mcdi_sft9001_cable_diag_names);
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}
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}
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return NULL;
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}
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struct efx_phy_operations efx_mcdi_phy_ops = {
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.probe = efx_mcdi_phy_probe,
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.init = efx_port_dummy_op_int,
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@ -604,6 +746,6 @@ struct efx_phy_operations efx_mcdi_phy_ops = {
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.get_settings = efx_mcdi_phy_get_settings,
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.set_settings = efx_mcdi_phy_set_settings,
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.test_alive = efx_mcdi_phy_test_alive,
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.run_tests = NULL,
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.test_name = NULL,
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.run_tests = efx_mcdi_phy_run_tests,
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.test_name = efx_mcdi_phy_test_name,
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};
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