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[SCSI] qla4xxx: Temperature monitoring for ISP82XX core.

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During watchdog, need to monitor temperature of ISP82XX core
and set device state to FAILED when temperature reaches
"Panic" level.

Signed-off-by: Mike Hernandez <michael.hernandez@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Mike Hernandez 2012-01-11 02:44:15 -08:00 committed by James Bottomley
parent 124dd90f65
commit 4f77083ed0
3 changed files with 58 additions and 4 deletions
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1
drivers/scsi/qla4xxx/ql4_def.h
View file

@ -671,6 +671,7 @@ struct scsi_qla_host {
uint16_t pri_ddb_idx;
uint16_t sec_ddb_idx;
int is_reset;
uint16_t temperature;
};
struct ql4_task_data {

19
drivers/scsi/qla4xxx/ql4_nx.h
View file

@ -19,12 +19,25 @@
#define PHAN_PEG_RCV_INITIALIZED 0xff01
/*CRB_RELATED*/
#define QLA82XX_CRB_BASE QLA82XX_CAM_RAM(0x200)
#define QLA82XX_REG(X) (QLA82XX_CRB_BASE+(X))
#define QLA82XX_CRB_BASE (QLA82XX_CAM_RAM(0x200))
#define QLA82XX_REG(X) (QLA82XX_CRB_BASE+(X))
#define CRB_CMDPEG_STATE QLA82XX_REG(0x50)
#define CRB_RCVPEG_STATE QLA82XX_REG(0x13c)
#define CRB_DMA_SHIFT QLA82XX_REG(0xcc)
#define CRB_TEMP_STATE QLA82XX_REG(0x1b4)
#define qla82xx_get_temp_val(x) ((x) >> 16)
#define qla82xx_get_temp_state(x) ((x) & 0xffff)
#define qla82xx_encode_temp(val, state) (((val) << 16) | (state))
/*
* Temperature control.
*/
enum {
QLA82XX_TEMP_NORMAL = 0x1, /* Normal operating range */
QLA82XX_TEMP_WARN, /* Sound alert, temperature getting high */
QLA82XX_TEMP_PANIC /* Fatal error, hardware has shut down. */
};
#define QLA82XX_HW_H0_CH_HUB_ADR 0x05
#define QLA82XX_HW_H1_CH_HUB_ADR 0x0E

42
drivers/scsi/qla4xxx/ql4_os.c
View file

@ -1971,6 +1971,42 @@ static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
return QLA_ERROR;
}
/**
* qla4_8xxx_check_temp - Check the ISP82XX temperature.
* @ha: adapter block pointer.
*
* Note: The caller should not hold the idc lock.
**/
static int qla4_8xxx_check_temp(struct scsi_qla_host *ha)
{
uint32_t temp, temp_state, temp_val;
int status = QLA_SUCCESS;
temp = qla4_8xxx_rd_32(ha, CRB_TEMP_STATE);
temp_state = qla82xx_get_temp_state(temp);
temp_val = qla82xx_get_temp_val(temp);
if (temp_state == QLA82XX_TEMP_PANIC) {
ql4_printk(KERN_WARNING, ha, "Device temperature %d degrees C"
" exceeds maximum allowed. Hardware has been shut"
" down.\n", temp_val);
status = QLA_ERROR;
} else if (temp_state == QLA82XX_TEMP_WARN) {
if (ha->temperature == QLA82XX_TEMP_NORMAL)
ql4_printk(KERN_WARNING, ha, "Device temperature %d"
" degrees C exceeds operating range."
" Immediate action needed.\n", temp_val);
} else {
if (ha->temperature == QLA82XX_TEMP_WARN)
ql4_printk(KERN_INFO, ha, "Device temperature is"
" now %d degrees C in normal range.\n",
temp_val);
}
ha->temperature = temp_state;
return status;
}
/**
* qla4_8xxx_check_fw_alive - Check firmware health
* @ha: Pointer to host adapter structure.
@ -2042,7 +2078,11 @@ void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) {
dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE);
if (dev_state == QLA82XX_DEV_NEED_RESET &&
if (qla4_8xxx_check_temp(ha)) {
set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
qla4xxx_wake_dpc(ha);
} else if (dev_state == QLA82XX_DEV_NEED_RESET &&
!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
if (!ql4xdontresethba) {
ql4_printk(KERN_INFO, ha, "%s: HW State: "