Commit 4f77083e authored by Mike Hernandez's avatar Mike Hernandez Committed by James Bottomley
Browse files

[SCSI] qla4xxx: Temperature monitoring for ISP82XX core. 



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

Signed-off-by: default avatarMike Hernandez <michael.hernandez@qlogic.com>
Signed-off-by: default avatarVikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: default avatarMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: default avatarJames Bottomley <JBottomley@Parallels.com>
parent 124dd90f

drivers/scsi/qla4xxx/ql4_def.h

+1 −0
Original line number Diff line number Diff line
@@ -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 {

drivers/scsi/qla4xxx/ql4_nx.h

+16 −3
Original line number Diff line number Diff line
@@ -19,12 +19,25 @@ 
#define PHAN_PEG_RCV_INITIALIZED	0xff01



/*CRB_RELATED*/

#define QLA82XX_CRB_BASE	QLA82XX_CAM_RAM(0x200)

#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

drivers/scsi/qla4xxx/ql4_os.c

+41 −1
Original line number Diff line number Diff line
@@ -1971,6 +1971,42 @@ mem_alloc_error_exit: 
	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: "

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