forked from Minki/linux
sfc: Use lm87 and lm90 drivers for board temperature/power monitoring
Add board monitoring to periodic work whenever link is down. For SFE4001, report when a fault has caused the PHY to turn off. For SFE4002, switch XFP PHY into low-power state in case of a fault. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Ben Hutchings
Jeff Garzik
parent
f41507245e
commit
3e133c44d2
@ -11,6 +11,7 @@
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#include "phy.h"
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#include "boards.h"
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#include "efx.h"
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#include "workarounds.h"
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/* Macros for unpacking the board revision */
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/* The revision info is in host byte order. */
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@ -51,10 +52,129 @@ static void board_blink(struct efx_nic *efx, bool blink)
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}
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}
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/*****************************************************************************
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* Support for LM87 sensor chip used on several boards
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*/
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#define LM87_REG_ALARMS1 0x41
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#define LM87_REG_ALARMS2 0x42
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#define LM87_IN_LIMITS(nr, _min, _max) \
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0x2B + (nr) * 2, _max, 0x2C + (nr) * 2, _min
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#define LM87_AIN_LIMITS(nr, _min, _max) \
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0x3B + (nr), _max, 0x1A + (nr), _min
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#define LM87_TEMP_INT_LIMITS(_min, _max) \
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0x39, _max, 0x3A, _min
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#define LM87_TEMP_EXT1_LIMITS(_min, _max) \
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0x37, _max, 0x38, _min
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#define LM87_ALARM_TEMP_INT 0x10
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#define LM87_ALARM_TEMP_EXT1 0x20
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#if defined(CONFIG_SENSORS_LM87) || defined(CONFIG_SENSORS_LM87_MODULE)
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static int efx_init_lm87(struct efx_nic *efx, struct i2c_board_info *info,
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const u8 *reg_values)
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{
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struct i2c_client *client = i2c_new_device(&efx->i2c_adap, info);
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int rc;
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if (!client)
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return -EIO;
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while (*reg_values) {
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u8 reg = *reg_values++;
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u8 value = *reg_values++;
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rc = i2c_smbus_write_byte_data(client, reg, value);
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if (rc)
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goto err;
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}
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efx->board_info.hwmon_client = client;
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return 0;
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err:
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i2c_unregister_device(client);
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return rc;
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}
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static void efx_fini_lm87(struct efx_nic *efx)
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{
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i2c_unregister_device(efx->board_info.hwmon_client);
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}
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static int efx_check_lm87(struct efx_nic *efx, unsigned mask)
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{
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struct i2c_client *client = efx->board_info.hwmon_client;
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s32 alarms1, alarms2;
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/* If link is up then do not monitor temperature */
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if (EFX_WORKAROUND_7884(efx) && efx->link_up)
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return 0;
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alarms1 = i2c_smbus_read_byte_data(client, LM87_REG_ALARMS1);
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alarms2 = i2c_smbus_read_byte_data(client, LM87_REG_ALARMS2);
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if (alarms1 < 0)
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return alarms1;
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if (alarms2 < 0)
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return alarms2;
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alarms1 &= mask;
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alarms2 &= mask >> 8;
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if (alarms1 || alarms2) {
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EFX_ERR(efx,
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"LM87 detected a hardware failure (status %02x:%02x)"
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"%s%s\n",
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alarms1, alarms2,
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(alarms1 & LM87_ALARM_TEMP_INT) ? " INTERNAL" : "",
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(alarms1 & LM87_ALARM_TEMP_EXT1) ? " EXTERNAL" : "");
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return -ERANGE;
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}
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return 0;
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}
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#else /* !CONFIG_SENSORS_LM87 */
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static inline int
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efx_init_lm87(struct efx_nic *efx, struct i2c_board_info *info,
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const u8 *reg_values)
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{
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return 0;
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}
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static inline void efx_fini_lm87(struct efx_nic *efx)
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{
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}
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static inline int efx_check_lm87(struct efx_nic *efx, unsigned mask)
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{
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return 0;
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}
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#endif /* CONFIG_SENSORS_LM87 */
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/*****************************************************************************
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* Support for the SFE4002
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*
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*/
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static u8 sfe4002_lm87_channel = 0x03; /* use AIN not FAN inputs */
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static const u8 sfe4002_lm87_regs[] = {
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LM87_IN_LIMITS(0, 0x83, 0x91), /* 2.5V: 1.8V +/- 5% */
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LM87_IN_LIMITS(1, 0x51, 0x5a), /* Vccp1: 1.2V +/- 5% */
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LM87_IN_LIMITS(2, 0xb6, 0xca), /* 3.3V: 3.3V +/- 5% */
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LM87_IN_LIMITS(3, 0xb0, 0xc9), /* 5V: 4.6-5.2V */
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LM87_IN_LIMITS(4, 0xb0, 0xe0), /* 12V: 11-14V */
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LM87_IN_LIMITS(5, 0x44, 0x4b), /* Vccp2: 1.0V +/- 5% */
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LM87_AIN_LIMITS(0, 0xa0, 0xb2), /* AIN1: 1.66V +/- 5% */
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LM87_AIN_LIMITS(1, 0x91, 0xa1), /* AIN2: 1.5V +/- 5% */
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LM87_TEMP_INT_LIMITS(10, 60), /* board */
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LM87_TEMP_EXT1_LIMITS(10, 70), /* Falcon */
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0
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};
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static struct i2c_board_info sfe4002_hwmon_info = {
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I2C_BOARD_INFO("lm87", 0x2e),
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.platform_data = &sfe4002_lm87_channel,
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.irq = -1,
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};
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/****************************************************************************/
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/* LED allocations. Note that on rev A0 boards the schematic and the reality
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* differ: red and green are swapped. Below is the fixed (A1) layout (there
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@ -84,11 +204,27 @@ static void sfe4002_fault_led(struct efx_nic *efx, bool state)
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QUAKE_LED_OFF);
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}
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static int sfe4002_check_hw(struct efx_nic *efx)
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{
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/* A0 board rev. 4002s report a temperature fault the whole time
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* (bad sensor) so we mask it out. */
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unsigned alarm_mask =
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(efx->board_info.major == 0 && efx->board_info.minor == 0) ?
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~LM87_ALARM_TEMP_EXT1 : ~0;
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return efx_check_lm87(efx, alarm_mask);
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}
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static int sfe4002_init(struct efx_nic *efx)
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{
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int rc = efx_init_lm87(efx, &sfe4002_hwmon_info, sfe4002_lm87_regs);
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if (rc)
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return rc;
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efx->board_info.monitor = sfe4002_check_hw;
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efx->board_info.init_leds = sfe4002_init_leds;
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efx->board_info.set_fault_led = sfe4002_fault_led;
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efx->board_info.blink = board_blink;
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efx->board_info.fini = efx_fini_lm87;
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return 0;
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}
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@ -260,6 +260,41 @@ void mdio_clause45_phy_reconfigure(struct efx_nic *efx)
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MDIO_MMDREG_CTRL1, ctrl2);
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}
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static void mdio_clause45_set_mmd_lpower(struct efx_nic *efx,
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int lpower, int mmd)
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{
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int phy = efx->mii.phy_id;
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int stat = mdio_clause45_read(efx, phy, mmd, MDIO_MMDREG_STAT1);
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int ctrl1, ctrl2;
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EFX_TRACE(efx, "Setting low power mode for MMD %d to %d\n",
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mmd, lpower);
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if (stat & (1 << MDIO_MMDREG_STAT1_LPABLE_LBN)) {
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ctrl1 = ctrl2 = mdio_clause45_read(efx, phy,
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mmd, MDIO_MMDREG_CTRL1);
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if (lpower)
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ctrl2 |= (1 << MDIO_MMDREG_CTRL1_LPOWER_LBN);
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else
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ctrl2 &= ~(1 << MDIO_MMDREG_CTRL1_LPOWER_LBN);
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if (ctrl1 != ctrl2)
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mdio_clause45_write(efx, phy, mmd,
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MDIO_MMDREG_CTRL1, ctrl2);
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}
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}
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void mdio_clause45_set_mmds_lpower(struct efx_nic *efx,
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int low_power, unsigned int mmd_mask)
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{
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int mmd = 0;
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while (mmd_mask) {
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if (mmd_mask & 1)
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mdio_clause45_set_mmd_lpower(efx, low_power, mmd);
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mmd_mask = (mmd_mask >> 1);
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mmd++;
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}
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}
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/**
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* mdio_clause45_get_settings - Read (some of) the PHY settings over MDIO.
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* @efx: Efx NIC
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@ -54,6 +54,9 @@
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/* Loopback bit for WIS, PCS, PHYSX and DTEXS */
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#define MDIO_MMDREG_CTRL1_LBACK_LBN (14)
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#define MDIO_MMDREG_CTRL1_LBACK_WIDTH (1)
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/* Low power */
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#define MDIO_MMDREG_CTRL1_LPOWER_LBN (11)
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#define MDIO_MMDREG_CTRL1_LPOWER_WIDTH (1)
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/* Bits in MMDREG_STAT1 */
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#define MDIO_MMDREG_STAT1_FAULT_LBN (7)
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@ -240,6 +243,10 @@ extern void mdio_clause45_transmit_disable(struct efx_nic *efx);
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/* Generic part of reconfigure: set/clear loopback bits */
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extern void mdio_clause45_phy_reconfigure(struct efx_nic *efx);
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/* Set the power state of the specified MMDs */
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extern void mdio_clause45_set_mmds_lpower(struct efx_nic *efx,
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int low_power, unsigned int mmd_mask);
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/* Read (some of) the PHY settings over MDIO */
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extern void mdio_clause45_get_settings(struct efx_nic *efx,
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struct ethtool_cmd *ecmd);
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@ -414,6 +414,7 @@ struct efx_blinker {
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* @init_leds: Sets up board LEDs
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* @set_fault_led: Turns the fault LED on or off
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* @blink: Starts/stops blinking
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* @monitor: Board-specific health check function
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* @fini: Cleanup function
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* @blinker: used to blink LEDs in software
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* @hwmon_client: I2C client for hardware monitor
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@ -428,6 +429,7 @@ struct efx_board {
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* have a separate init callback that happens later than
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* board init. */
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int (*init_leds)(struct efx_nic *efx);
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int (*monitor) (struct efx_nic *nic);
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void (*set_fault_led) (struct efx_nic *efx, bool state);
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void (*blink) (struct efx_nic *efx, bool start);
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void (*fini) (struct efx_nic *nic);
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@ -525,11 +527,15 @@ struct efx_phy_operations {
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* @enum efx_phy_mode - PHY operating mode flags
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* @PHY_MODE_NORMAL: on and should pass traffic
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* @PHY_MODE_TX_DISABLED: on with TX disabled
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* @PHY_MODE_LOW_POWER: set to low power through MDIO
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* @PHY_MODE_OFF: switched off through external control
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* @PHY_MODE_SPECIAL: on but will not pass traffic
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*/
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enum efx_phy_mode {
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PHY_MODE_NORMAL = 0,
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PHY_MODE_TX_DISABLED = 1,
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PHY_MODE_LOW_POWER = 2,
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PHY_MODE_OFF = 4,
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PHY_MODE_SPECIAL = 8,
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};
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@ -21,6 +21,7 @@
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#include "falcon_hwdefs.h"
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#include "falcon_io.h"
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#include "mac.h"
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#include "workarounds.h"
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/**************************************************************************
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*
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@ -65,48 +66,9 @@
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#define P1_SPARE_LBN 4
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#define P1_SPARE_WIDTH 4
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/**************************************************************************
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*
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* Temperature Sensor
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*
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**************************************************************************/
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#define MAX6647 0x4e
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#define RLTS 0x00
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#define RLTE 0x01
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#define RSL 0x02
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#define RCL 0x03
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#define RCRA 0x04
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#define RLHN 0x05
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#define RLLI 0x06
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#define RRHI 0x07
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#define RRLS 0x08
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#define WCRW 0x0a
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#define WLHO 0x0b
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#define WRHA 0x0c
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#define WRLN 0x0e
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#define OSHT 0x0f
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#define REET 0x10
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#define RIET 0x11
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#define RWOE 0x19
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#define RWOI 0x20
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#define HYS 0x21
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#define QUEUE 0x22
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#define MFID 0xfe
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#define REVID 0xff
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/* Status bits */
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#define MAX6647_BUSY (1 << 7) /* ADC is converting */
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#define MAX6647_LHIGH (1 << 6) /* Local high temp. alarm */
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#define MAX6647_LLOW (1 << 5) /* Local low temp. alarm */
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#define MAX6647_RHIGH (1 << 4) /* Remote high temp. alarm */
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#define MAX6647_RLOW (1 << 3) /* Remote low temp. alarm */
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#define MAX6647_FAULT (1 << 2) /* DXN/DXP short/open circuit */
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#define MAX6647_EOT (1 << 1) /* Remote junction overtemp. */
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#define MAX6647_IOT (1 << 0) /* Local junction overtemp. */
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static const u8 xgphy_max_temperature = 90;
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/* Temperature Sensor */
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#define MAX664X_REG_RSL 0x02
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#define MAX664X_REG_WLHO 0x0B
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static void sfe4001_poweroff(struct efx_nic *efx)
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{
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@ -119,7 +81,7 @@ static void sfe4001_poweroff(struct efx_nic *efx)
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i2c_smbus_write_byte_data(ioexp_client, P0_CONFIG, 0xff);
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/* Clear any over-temperature alert */
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i2c_smbus_read_byte_data(hwmon_client, RSL);
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i2c_smbus_read_byte_data(hwmon_client, MAX664X_REG_RSL);
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}
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static int sfe4001_poweron(struct efx_nic *efx)
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@ -131,7 +93,7 @@ static int sfe4001_poweron(struct efx_nic *efx)
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u8 out;
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/* Clear any previous over-temperature alert */
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rc = i2c_smbus_read_byte_data(hwmon_client, RSL);
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rc = i2c_smbus_read_byte_data(hwmon_client, MAX664X_REG_RSL);
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if (rc < 0)
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return rc;
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@ -209,6 +171,34 @@ fail_on:
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return rc;
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}
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static int sfe4001_check_hw(struct efx_nic *efx)
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{
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s32 status;
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/* If XAUI link is up then do not monitor */
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if (EFX_WORKAROUND_7884(efx) && falcon_xaui_link_ok(efx))
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return 0;
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/* Check the powered status of the PHY. Lack of power implies that
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* the MAX6647 has shut down power to it, probably due to a temp.
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* alarm. Reading the power status rather than the MAX6647 status
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* directly because the later is read-to-clear and would thus
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* start to power up the PHY again when polled, causing us to blip
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* the power undesirably.
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* We know we can read from the IO expander because we did
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* it during power-on. Assume failure now is bad news. */
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status = i2c_smbus_read_byte_data(efx->board_info.ioexp_client, P1_IN);
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if (status >= 0 &&
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(status & ((1 << P1_AFE_PWD_LBN) | (1 << P1_DSP_PWD25_LBN))) != 0)
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return 0;
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/* Use board power control, not PHY power control */
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sfe4001_poweroff(efx);
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efx->phy_mode = PHY_MODE_OFF;
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return (status < 0) ? -EIO : -ERANGE;
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}
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/* On SFE4001 rev A2 and later, we can control the FLASH_CFG_1 pin
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* using the 3V3X output of the IO-expander. Allow the user to set
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* this when the device is stopped, and keep it stopped then.
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@ -261,35 +251,34 @@ static void sfe4001_fini(struct efx_nic *efx)
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i2c_unregister_device(efx->board_info.hwmon_client);
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}
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static struct i2c_board_info sfe4001_hwmon_info = {
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I2C_BOARD_INFO("max6647", 0x4e),
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.irq = -1,
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};
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/* This board uses an I2C expander to provider power to the PHY, which needs to
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* be turned on before the PHY can be used.
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* Context: Process context, rtnl lock held
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*/
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int sfe4001_init(struct efx_nic *efx)
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{
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struct i2c_client *hwmon_client;
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int rc;
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hwmon_client = i2c_new_dummy(&efx->i2c_adap, MAX6647);
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if (!hwmon_client)
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#if defined(CONFIG_SENSORS_LM90) || defined(CONFIG_SENSORS_LM90_MODULE)
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efx->board_info.hwmon_client =
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i2c_new_device(&efx->i2c_adap, &sfe4001_hwmon_info);
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#else
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efx->board_info.hwmon_client =
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i2c_new_dummy(&efx->i2c_adap, sfe4001_hwmon_info.addr);
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#endif
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if (!efx->board_info.hwmon_client)
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return -EIO;
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efx->board_info.hwmon_client = hwmon_client;
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/* Set DSP over-temperature alert threshold */
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EFX_INFO(efx, "DSP cut-out at %dC\n", xgphy_max_temperature);
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rc = i2c_smbus_write_byte_data(hwmon_client, WLHO,
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||||
xgphy_max_temperature);
|
||||
/* Raise board/PHY high limit from 85 to 90 degrees Celsius */
|
||||
rc = i2c_smbus_write_byte_data(efx->board_info.hwmon_client,
|
||||
MAX664X_REG_WLHO, 90);
|
||||
if (rc)
|
||||
goto fail_ioexp;
|
||||
|
||||
/* Read it back and verify */
|
||||
rc = i2c_smbus_read_byte_data(hwmon_client, RLHN);
|
||||
if (rc < 0)
|
||||
goto fail_ioexp;
|
||||
if (rc != xgphy_max_temperature) {
|
||||
rc = -EFAULT;
|
||||
goto fail_ioexp;
|
||||
}
|
||||
goto fail_hwmon;
|
||||
|
||||
efx->board_info.ioexp_client = i2c_new_dummy(&efx->i2c_adap, PCA9539);
|
||||
if (!efx->board_info.ioexp_client) {
|
||||
@ -301,6 +290,7 @@ int sfe4001_init(struct efx_nic *efx)
|
||||
* blink code. */
|
||||
efx->board_info.blink = tenxpress_phy_blink;
|
||||
|
||||
efx->board_info.monitor = sfe4001_check_hw;
|
||||
efx->board_info.fini = sfe4001_fini;
|
||||
|
||||
rc = sfe4001_poweron(efx);
|
||||
@ -319,6 +309,6 @@ fail_on:
|
||||
fail_ioexp:
|
||||
i2c_unregister_device(efx->board_info.ioexp_client);
|
||||
fail_hwmon:
|
||||
i2c_unregister_device(hwmon_client);
|
||||
i2c_unregister_device(efx->board_info.hwmon_client);
|
||||
return rc;
|
||||
}
|
||||
|
||||
@ -376,6 +376,7 @@ static int tenxpress_phy_check_hw(struct efx_nic *efx)
|
||||
{
|
||||
struct tenxpress_phy_data *phy_data = efx->phy_data;
|
||||
bool link_ok;
|
||||
int rc = 0;
|
||||
|
||||
link_ok = tenxpress_link_ok(efx, true);
|
||||
|
||||
@ -391,7 +392,22 @@ static int tenxpress_phy_check_hw(struct efx_nic *efx)
|
||||
atomic_set(&phy_data->bad_crc_count, 0);
|
||||
}
|
||||
|
||||
return 0;
|
||||
rc = efx->board_info.monitor(efx);
|
||||
if (rc) {
|
||||
EFX_ERR(efx, "Board sensor %s; shutting down PHY\n",
|
||||
(rc == -ERANGE) ? "reported fault" : "failed");
|
||||
if (efx->phy_mode & PHY_MODE_OFF) {
|
||||
/* Assume that board has shut PHY off */
|
||||
phy_data->phy_mode = PHY_MODE_OFF;
|
||||
} else {
|
||||
efx->phy_mode |= PHY_MODE_LOW_POWER;
|
||||
mdio_clause45_set_mmds_lpower(efx, true,
|
||||
efx->phy_op->mmds);
|
||||
phy_data->phy_mode |= PHY_MODE_LOW_POWER;
|
||||
}
|
||||
}
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
static void tenxpress_phy_fini(struct efx_nic *efx)
|
||||
|
||||
@ -22,6 +22,8 @@
|
||||
#define EFX_WORKAROUND_5147 EFX_WORKAROUND_ALWAYS
|
||||
/* RX PCIe double split performance issue */
|
||||
#define EFX_WORKAROUND_7575 EFX_WORKAROUND_ALWAYS
|
||||
/* Bit-bashed I2C reads cause performance drop */
|
||||
#define EFX_WORKAROUND_7884 EFX_WORKAROUND_ALWAYS
|
||||
/* TX pkt parser problem with <= 16 byte TXes */
|
||||
#define EFX_WORKAROUND_9141 EFX_WORKAROUND_ALWAYS
|
||||
/* Low rate CRC errors require XAUI reset */
|
||||
|
||||
@ -128,6 +128,15 @@ static int xfp_phy_check_hw(struct efx_nic *efx)
|
||||
if (link_up != efx->link_up)
|
||||
falcon_xmac_sim_phy_event(efx);
|
||||
|
||||
rc = efx->board_info.monitor(efx);
|
||||
if (rc) {
|
||||
struct xfp_phy_data *phy_data = efx->phy_data;
|
||||
EFX_ERR(efx, "XFP sensor alert; putting PHY into low power\n");
|
||||
efx->phy_mode |= PHY_MODE_LOW_POWER;
|
||||
mdio_clause45_set_mmds_lpower(efx, 1, XFP_REQUIRED_DEVS);
|
||||
phy_data->phy_mode |= PHY_MODE_LOW_POWER;
|
||||
}
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user