static int efx_check_lm87(struct efx_nic *efx, unsigned mask)
{
struct i2c_client *client = falcon_board(efx)->hwmon_client;
s32 alarms1, alarms2;
/* If link is up then do not monitor temperature */
if (EFX_WORKAROUND_7884(efx) && efx->link_state.up)
return 0;
alarms1 = i2c_smbus_read_byte_data(client, LM87_REG_ALARMS1);
alarms2 = i2c_smbus_read_byte_data(client, LM87_REG_ALARMS2);
if (alarms1 < 0)
return alarms1;
if (alarms2 < 0)
return alarms2;
alarms1 &= mask;
alarms2 &= mask >> 8;
if (alarms1 || alarms2) {
EFX_ERR(efx,
"LM87 detected a hardware failure (status %02x:%02x)"
"%s%s\n",
alarms1, alarms2,
(alarms1 & LM87_ALARM_TEMP_INT) ? " INTERNAL" : "",
(alarms1 & LM87_ALARM_TEMP_EXT1) ? " EXTERNAL" : "");
return -ERANGE;
}
return 0;
}
static int sfe4001_check_hw(struct efx_nic *efx)
{
s32 status;
/* If XAUI link is up then do not monitor */
if (EFX_WORKAROUND_7884(efx) && !efx->xmac_poll_required)
return 0;
/* Check the powered status of the PHY. Lack of power implies that
* the MAX6647 has shut down power to it, probably due to a temp.
* alarm. Reading the power status rather than the MAX6647 status
* directly because the later is read-to-clear and would thus
* start to power up the PHY again when polled, causing us to blip
* the power undesirably.
* We know we can read from the IO expander because we did
* it during power-on. Assume failure now is bad news. */
status = i2c_smbus_read_byte_data(falcon_board(efx)->ioexp_client, P1_IN);
if (status >= 0 &&
(status & ((1 << P1_AFE_PWD_LBN) | (1 << P1_DSP_PWD25_LBN))) != 0)
return 0;
/* Use board power control, not PHY power control */
sfe4001_poweroff(efx);
efx->phy_mode = PHY_MODE_OFF;
return (status < 0) ? -EIO : -ERANGE;
}
static int efx_check_lm87(struct efx_nic *efx, unsigned mask)
{
struct i2c_client *client = falcon_board(efx)->hwmon_client;
s32 alarms1, alarms2;
/* If link is up then do not monitor temperature */
if (EFX_WORKAROUND_7884(efx) && efx->link_state.up)
return 0;
alarms1 = i2c_smbus_read_byte_data(client, LM87_REG_ALARMS1);
alarms2 = i2c_smbus_read_byte_data(client, LM87_REG_ALARMS2);
if (alarms1 < 0)
return alarms1;
if (alarms2 < 0)
return alarms2;
alarms1 &= mask;
alarms2 &= mask >> 8;
if (alarms1 || alarms2) {
netif_err(efx, hw, efx->net_dev,
"LM87 detected a hardware failure (status %02x:%02x)"
"%s%s%s\n",
alarms1, alarms2,
(alarms1 & LM87_ALARM_TEMP_INT) ?
"; board is overheating" : "",
(alarms1 & LM87_ALARM_TEMP_EXT1) ?
"; controller is overheating" : "",
(alarms1 & ~(LM87_ALARM_TEMP_INT | LM87_ALARM_TEMP_EXT1)
|| alarms2) ?
"; electrical fault" : "");
return -ERANGE;
}
return 0;
}
static int sfn4111t_check_hw(struct efx_nic *efx)
{
s32 status;
/* If XAUI link is up then do not monitor */
if (EFX_WORKAROUND_7884(efx) && !efx->xmac_poll_required)
return 0;
/* Test LHIGH, RHIGH, FAULT, EOT and IOT alarms */
status = i2c_smbus_read_byte_data(falcon_board(efx)->hwmon_client,
MAX664X_REG_RSL);
if (status < 0)
return -EIO;
if (status & 0x57)
return -ERANGE;
return 0;
}
