static bool sft9001_link_ok(struct efx_nic *efx, struct ethtool_cmd *ecmd)
{
int phy_id = efx->mii.phy_id;
u32 reg;
if (efx_phy_mode_disabled(efx->phy_mode))
return false;
else if (efx->loopback_mode == LOOPBACK_GPHY)
return true;
else if (efx->loopback_mode)
return mdio_clause45_links_ok(efx,
MDIO_MMDREG_DEVS_PMAPMD |
MDIO_MMDREG_DEVS_PHYXS);
/* We must use the same definition of link state as LASI,
* otherwise we can miss a link state transition
*/
if (ecmd->speed == 10000) {
reg = mdio_clause45_read(efx, phy_id, MDIO_MMD_PCS,
PCS_10GBASET_STAT1);
return reg & (1 << PCS_10GBASET_BLKLK_LBN);
} else {
reg = mdio_clause45_read(efx, phy_id, MDIO_MMD_C22EXT,
C22EXT_STATUS_REG);
return reg & (1 << C22EXT_STATUS_LINK_LBN);
}
}
/* Poll PHY for interrupt */
static void tenxpress_phy_poll(struct efx_nic *efx)
{
struct tenxpress_phy_data *phy_data = efx->phy_data;
bool change = false;
if (efx->phy_type == PHY_TYPE_SFX7101) {
bool link_ok = sfx7101_link_ok(efx);
if (link_ok != efx->link_up) {
change = true;
} else {
unsigned int link_fc = mdio_clause45_get_pause(efx);
if (link_fc != efx->link_fc)
change = true;
}
sfx7101_check_bad_lp(efx, link_ok);
} else if (efx->loopback_mode) {
bool link_ok = sft9001_link_ok(efx, NULL);
if (link_ok != efx->link_up)
change = true;
} else {
u32 status = mdio_clause45_read(efx, efx->mii.phy_id,
MDIO_MMD_PMAPMD,
PMA_PMD_LASI_STATUS);
if (status & (1 << PMA_PMD_LS_ALARM_LBN))
change = true;
}
if (change)
falcon_sim_phy_event(efx);
if (phy_data->phy_mode != PHY_MODE_NORMAL)
return;
}
/* Perform a "special software reset" on the PHY. The caller is
* responsible for saving and restoring the PHY hardware registers
* properly, and masking/unmasking LASI */
static int tenxpress_special_reset(struct efx_nic *efx)
{
int rc, reg;
/* The XGMAC clock is driven from the SFC7101/SFT9001 312MHz clock, so
* a special software reset can glitch the XGMAC sufficiently for stats
* requests to fail. */
efx_stats_disable(efx);
/* Initiate reset */
reg = mdio_clause45_read(efx, efx->mii.phy_id,
MDIO_MMD_PMAPMD, PMA_PMD_XCONTROL_REG);
reg |= (1 << PMA_PMD_EXT_SSR_LBN);
mdio_clause45_write(efx, efx->mii.phy_id, MDIO_MMD_PMAPMD,
PMA_PMD_XCONTROL_REG, reg);
mdelay(200);
/* Wait for the blocks to come out of reset */
rc = mdio_clause45_wait_reset_mmds(efx,
TENXPRESS_REQUIRED_DEVS);
if (rc < 0)
goto out;
/* Try and reconfigure the device */
rc = tenxpress_init(efx);
if (rc < 0)
goto out;
/* Wait for the XGXS state machine to churn */
mdelay(10);
out:
efx_stats_enable(efx);
return rc;
}
static int tenxpress_phy_init(struct efx_nic *efx)
{
struct tenxpress_phy_data *phy_data;
int rc = 0;
phy_data = kzalloc(sizeof(*phy_data), GFP_KERNEL);
if (!phy_data)
return -ENOMEM;
efx->phy_data = phy_data;
phy_data->phy_mode = efx->phy_mode;
if (!(efx->phy_mode & PHY_MODE_SPECIAL)) {
if (efx->phy_type == PHY_TYPE_SFT9001A) {
int reg;
reg = mdio_clause45_read(efx, efx->mii.phy_id,
MDIO_MMD_PMAPMD,
PMA_PMD_XCONTROL_REG);
reg |= (1 << PMA_PMD_EXT_SSR_LBN);
mdio_clause45_write(efx, efx->mii.phy_id,
MDIO_MMD_PMAPMD,
PMA_PMD_XCONTROL_REG, reg);
mdelay(200);
}
rc = mdio_clause45_wait_reset_mmds(efx,
TENXPRESS_REQUIRED_DEVS);
if (rc < 0)
goto fail;
rc = mdio_clause45_check_mmds(efx, TENXPRESS_REQUIRED_DEVS, 0);
if (rc < 0)
goto fail;
}
rc = tenxpress_init(efx);
if (rc < 0)
goto fail;
mdio_clause45_set_pause(efx);
if (efx->phy_type == PHY_TYPE_SFT9001B) {
rc = device_create_file(&efx->pci_dev->dev,
&dev_attr_phy_short_reach);
if (rc)
goto fail;
}
schedule_timeout_uninterruptible(HZ / 5); /* 200ms */
/* Let XGXS and SerDes out of reset */
falcon_reset_xaui(efx);
return 0;
fail:
kfree(efx->phy_data);
efx->phy_data = NULL;
return rc;
}
static void sfx7101_check_bad_lp(struct efx_nic *efx, bool link_ok)
{
struct tenxpress_phy_data *pd = efx->phy_data;
int phy_id = efx->mii.phy_id;
bool bad_lp;
int reg;
if (link_ok) {
bad_lp = false;
} else {
/* Check that AN has started but not completed. */
reg = mdio_clause45_read(efx, phy_id, MDIO_MMD_AN,
MDIO_AN_STATUS);
if (!(reg & (1 << MDIO_AN_STATUS_LP_AN_CAP_LBN)))
return; /* LP status is unknown */
bad_lp = !(reg & (1 << MDIO_AN_STATUS_AN_DONE_LBN));
if (bad_lp)
pd->bad_lp_tries++;
}
/* Nothing to do if all is well and was previously so. */
if (!pd->bad_lp_tries)
return;
/* Use the RX (red) LED as an error indicator once we've seen AN
* failure several times in a row, and also log a message. */
if (!bad_lp || pd->bad_lp_tries == MAX_BAD_LP_TRIES) {
reg = mdio_clause45_read(efx, phy_id, MDIO_MMD_PMAPMD,
PMA_PMD_LED_OVERR_REG);
reg &= ~(PMA_PMD_LED_MASK << PMA_PMD_LED_RX_LBN);
if (!bad_lp) {
reg |= PMA_PMD_LED_OFF << PMA_PMD_LED_RX_LBN;
} else {
reg |= PMA_PMD_LED_FLASH << PMA_PMD_LED_RX_LBN;
EFX_ERR(efx, "appears to be plugged into a port"
" that is not 10GBASE-T capable. The PHY"
" supports 10GBASE-T ONLY, so no link can"
" be established\n");
}
mdio_clause45_write(efx, phy_id, MDIO_MMD_PMAPMD,
PMA_PMD_LED_OVERR_REG, reg);
pd->bad_lp_tries = bad_lp;
}
}
static ssize_t show_phy_short_reach(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev));
int reg;
reg = mdio_clause45_read(efx, efx->mii.phy_id, MDIO_MMD_PMAPMD,
MDIO_PMAPMD_10GBT_TXPWR);
return sprintf(buf, "%d\n",
!!(reg & (1 << MDIO_PMAPMD_10GBT_TXPWR_SHORT_LBN)));
}
static void
tenxpress_get_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd)
{
int phy_id = efx->mii.phy_id;
u32 adv = 0, lpa = 0;
int reg;
if (efx->phy_type != PHY_TYPE_SFX7101) {
reg = mdio_clause45_read(efx, phy_id, MDIO_MMD_C22EXT,
C22EXT_MSTSLV_CTRL);
if (reg & (1 << C22EXT_MSTSLV_CTRL_ADV_1000_FD_LBN))
adv |= ADVERTISED_1000baseT_Full;
reg = mdio_clause45_read(efx, phy_id, MDIO_MMD_C22EXT,
C22EXT_MSTSLV_STATUS);
if (reg & (1 << C22EXT_MSTSLV_STATUS_LP_1000_HD_LBN))
lpa |= ADVERTISED_1000baseT_Half;
if (reg & (1 << C22EXT_MSTSLV_STATUS_LP_1000_FD_LBN))
lpa |= ADVERTISED_1000baseT_Full;
}
reg = mdio_clause45_read(efx, phy_id, MDIO_MMD_AN,
MDIO_AN_10GBT_CTRL);
if (reg & (1 << MDIO_AN_10GBT_CTRL_ADV_10G_LBN))
adv |= ADVERTISED_10000baseT_Full;
reg = mdio_clause45_read(efx, phy_id, MDIO_MMD_AN,
MDIO_AN_10GBT_STATUS);
if (reg & (1 << MDIO_AN_10GBT_STATUS_LP_10G_LBN))
lpa |= ADVERTISED_10000baseT_Full;
mdio_clause45_get_settings_ext(efx, ecmd, adv, lpa);
if (efx->phy_type != PHY_TYPE_SFX7101)
ecmd->supported |= (SUPPORTED_100baseT_Full |
SUPPORTED_1000baseT_Full);
/* In loopback, the PHY automatically brings up the correct interface,
* but doesn't advertise the correct speed. So override it */
if (efx->loopback_mode == LOOPBACK_GPHY)
ecmd->speed = SPEED_1000;
else if (LOOPBACK_MASK(efx) & efx->phy_op->loopbacks)
ecmd->speed = SPEED_10000;
}
int sft9001_wait_boot(struct efx_nic *efx)
{
unsigned long timeout = jiffies + HZ + 1;
int boot_stat;
for (;;) {
boot_stat = mdio_clause45_read(efx, efx->mii.phy_id,
MDIO_MMD_PCS,
PCS_BOOT_STATUS_REG);
if (boot_stat >= 0) {
EFX_LOG(efx, "PHY boot status = %#x\n", boot_stat);
switch (boot_stat &
((1 << PCS_BOOT_FATAL_ERROR_LBN) |
(3 << PCS_BOOT_PROGRESS_LBN) |
(1 << PCS_BOOT_DOWNLOAD_WAIT_LBN) |
(1 << PCS_BOOT_CODE_STARTED_LBN))) {
case ((1 << PCS_BOOT_FATAL_ERROR_LBN) |
(PCS_BOOT_PROGRESS_CHECKSUM <<
PCS_BOOT_PROGRESS_LBN)):
case ((1 << PCS_BOOT_FATAL_ERROR_LBN) |
(PCS_BOOT_PROGRESS_INIT <<
PCS_BOOT_PROGRESS_LBN) |
(1 << PCS_BOOT_DOWNLOAD_WAIT_LBN)):
return -EINVAL;
case ((PCS_BOOT_PROGRESS_WAIT_MDIO <<
PCS_BOOT_PROGRESS_LBN) |
(1 << PCS_BOOT_DOWNLOAD_WAIT_LBN)):
return (efx->phy_mode & PHY_MODE_SPECIAL) ?
0 : -EIO;
case ((PCS_BOOT_PROGRESS_JUMP <<
PCS_BOOT_PROGRESS_LBN) |
(1 << PCS_BOOT_CODE_STARTED_LBN)):
case ((PCS_BOOT_PROGRESS_JUMP <<
PCS_BOOT_PROGRESS_LBN) |
(1 << PCS_BOOT_DOWNLOAD_WAIT_LBN) |
(1 << PCS_BOOT_CODE_STARTED_LBN)):
return (efx->phy_mode & PHY_MODE_SPECIAL) ?
-EIO : 0;
default:
if (boot_stat & (1 << PCS_BOOT_FATAL_ERROR_LBN))
return -EIO;
break;
}
}
if (time_after_eq(jiffies, timeout))
return -ETIMEDOUT;
msleep(50);
}
}
static int tenxpress_init(struct efx_nic *efx)
{
int phy_id = efx->mii.phy_id;
int reg;
if (efx->phy_type == PHY_TYPE_SFX7101) {
/* Enable 312.5 MHz clock */
mdio_clause45_write(efx, phy_id,
MDIO_MMD_PCS, PCS_TEST_SELECT_REG,
1 << CLK312_EN_LBN);
} else {
/* Enable 312.5 MHz clock and GMII */
reg = mdio_clause45_read(efx, phy_id, MDIO_MMD_PMAPMD,
PMA_PMD_XCONTROL_REG);
reg |= ((1 << PMA_PMD_EXT_GMII_EN_LBN) |
(1 << PMA_PMD_EXT_CLK_OUT_LBN) |
(1 << PMA_PMD_EXT_CLK312_LBN) |
(1 << PMA_PMD_EXT_ROBUST_LBN));
mdio_clause45_write(efx, phy_id, MDIO_MMD_PMAPMD,
PMA_PMD_XCONTROL_REG, reg);
mdio_clause45_set_flag(efx, phy_id, MDIO_MMD_C22EXT,
GPHY_XCONTROL_REG, GPHY_ISOLATE_LBN,
false);
}
/* Set the LEDs up as: Green = Link, Amber = Link/Act, Red = Off */
if (efx->phy_type == PHY_TYPE_SFX7101) {
mdio_clause45_set_flag(efx, phy_id, MDIO_MMD_PMAPMD,
PMA_PMD_LED_CTRL_REG,
PMA_PMA_LED_ACTIVITY_LBN,
true);
mdio_clause45_write(efx, phy_id, MDIO_MMD_PMAPMD,
PMA_PMD_LED_OVERR_REG, PMA_PMD_LED_DEFAULT);
}
return 0;
}
/* Check that the C166 has booted successfully */
static int tenxpress_phy_check(struct efx_nic *efx)
{
int phy_id = efx->mii.phy_id;
int count = PCS_BOOT_MAX_DELAY / PCS_BOOT_POLL_DELAY;
int boot_stat;
/* Wait for the boot to complete (or not) */
while (count) {
boot_stat = mdio_clause45_read(efx, phy_id,
MDIO_MMD_PCS,
PCS_BOOT_STATUS_REG);
if (boot_stat & (1 << PCS_BOOT_COMPLETE_LBN))
break;
count--;
udelay(PCS_BOOT_POLL_DELAY);
}
if (!count) {
EFX_ERR(efx, "%s: PHY boot timed out. Last status "
"%x\n", __func__,
(boot_stat >> PCS_BOOT_PROGRESS_LBN) &
((1 << PCS_BOOT_PROGRESS_WIDTH) - 1));
return -ETIMEDOUT;
}
static int sft9001_run_tests(struct efx_nic *efx, int *results, unsigned flags)
{
struct ethtool_cmd ecmd;
int phy_id = efx->mii.phy_id;
int rc = 0, rc2, i, ctrl_reg, res_reg;
if (flags & ETH_TEST_FL_OFFLINE)
efx->phy_op->get_settings(efx, &ecmd);
/* Initialise cable diagnostic results to unknown failure */
for (i = 1; i < 9; ++i)
results[i] = -1;
/* Run cable diagnostics; wait up to 5 seconds for them to complete.
* A cable fault is not a self-test failure, but a timeout is. */
ctrl_reg = ((1 << CDIAG_CTRL_IMMED_LBN) |
(CDIAG_CTRL_LEN_METRES << CDIAG_CTRL_LEN_UNIT_LBN));
if (flags & ETH_TEST_FL_OFFLINE) {
/* Break the link in order to run full diagnostics. We
* must reset the PHY to resume normal service. */
ctrl_reg |= (1 << CDIAG_CTRL_BRK_LINK_LBN);
}
mdio_clause45_write(efx, phy_id, MDIO_MMD_PMAPMD,
PMA_PMD_CDIAG_CTRL_REG, ctrl_reg);
i = 0;
while (mdio_clause45_read(efx, phy_id, MDIO_MMD_PMAPMD,
PMA_PMD_CDIAG_CTRL_REG) &
(1 << CDIAG_CTRL_IN_PROG_LBN)) {
if (++i == 50) {
rc = -ETIMEDOUT;
goto out;
}
msleep(100);
}
res_reg = mdio_clause45_read(efx, efx->mii.phy_id, MDIO_MMD_PMAPMD,
PMA_PMD_CDIAG_RES_REG);
for (i = 0; i < 4; i++) {
int pair_res =
(res_reg >> (CDIAG_RES_A_LBN - i * CDIAG_RES_WIDTH))
& ((1 << CDIAG_RES_WIDTH) - 1);
int len_reg = mdio_clause45_read(efx, efx->mii.phy_id,
MDIO_MMD_PMAPMD,
PMA_PMD_CDIAG_LEN_REG + i);
if (pair_res == CDIAG_RES_OK)
results[1 + i] = 1;
else if (pair_res == CDIAG_RES_INVALID)
results[1 + i] = -1;
else
results[1 + i] = -pair_res;
if (pair_res != CDIAG_RES_INVALID &&
pair_res != CDIAG_RES_OPEN &&
len_reg != 0xffff)
results[5 + i] = len_reg;
}
out:
if (flags & ETH_TEST_FL_OFFLINE) {
/* Reset, running the BIST and then resuming normal service. */
rc2 = tenxpress_special_reset(efx);
results[0] = rc2 ? -1 : 1;
if (!rc)
rc = rc2;
rc2 = efx->phy_op->set_settings(efx, &ecmd);
if (!rc)
rc = rc2;
}
return rc;
}
