[SCSI] qla4xxx: Added support for force firmware dump

This patch force driver to collect firmware dump using following command:-
"echo 2 > /sys/class/scsi_host/hostX/device/fw_dump"

Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

drivers/scsi/qla4xxx/ql4_83xx.c

@@ -538,7 +538,7 @@ struct device_info {
 	int port_num;
 };
 
-static int qla4_83xx_can_perform_reset(struct scsi_qla_host *ha)
+int qla4_83xx_can_perform_reset(struct scsi_qla_host *ha)
 {
 	uint32_t drv_active;
 	uint32_t dev_part, dev_part1, dev_part2;

drivers/scsi/qla4xxx/ql4_attr.c

@@ -74,16 +74,22 @@ qla4_8xxx_sysfs_write_fw_dump(struct file *filep, struct kobject *kobj,
 		}
 		break;
 	case 2:
-		/* Reset HBA */
+		/* Reset HBA and collect FW dump */
 		ha->isp_ops->idc_lock(ha);
 		dev_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE);
 		if (dev_state == QLA8XXX_DEV_READY) {
-			ql4_printk(KERN_INFO, ha,
-				   "%s: Setting Need reset, reset_owner is 0x%x.\n",
-				   __func__, ha->func_num);
+			ql4_printk(KERN_INFO, ha, "%s: Setting Need reset\n",
+				   __func__);
 			qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
 					    QLA8XXX_DEV_NEED_RESET);
-			set_bit(AF_8XXX_RST_OWNER, &ha->flags);
+			if (is_qla8022(ha) ||
+			    (is_qla8032(ha) &&
+			     qla4_83xx_can_perform_reset(ha))) {
+				set_bit(AF_8XXX_RST_OWNER, &ha->flags);
+				set_bit(AF_FW_RECOVERY, &ha->flags);
+				ql4_printk(KERN_INFO, ha, "%s: Reset owner is 0x%x\n",
+					   __func__, ha->func_num);
+			}
 		} else
 			ql4_printk(KERN_INFO, ha,
 				   "%s: Reset not performed as device state is 0x%x\n",

drivers/scsi/qla4xxx/ql4_glbl.h

@@ -260,6 +260,7 @@ int qla4_8xxx_update_idc_reg(struct scsi_qla_host *ha);
 int qla4_83xx_post_idc_ack(struct scsi_qla_host *ha);
 void qla4_83xx_disable_pause(struct scsi_qla_host *ha);
 void qla4_83xx_enable_mbox_intrs(struct scsi_qla_host *ha);
+int qla4_83xx_can_perform_reset(struct scsi_qla_host *ha);
 
 extern int ql4xextended_error_logging;
 extern int ql4xdontresethba;