[SCSI] qla2xxx: Add firmware-dump kobject uevent notification.

Signed-off-by: Andrew Vasquez <[e-mail]>
Signed-off-by: Giridhar Malavali <[e-mail]>
Signed-off-by: James Bottomley <[e-mail]>

Documentation/ABI/stable/sysfs-driver-qla2xxx

···
+What:		/sys/bus/pci/drivers/qla2xxx/.../devices/*
+Date:		September 2009
+Contact:	QLogic Linux Driver <[e-mail]>
+Description:	qla2xxx-udev.sh currently looks for uevent CHANGE events to
+		signal a firmware-dump has been generated by the driver and is
+		ready for retrieval.
+Users:		qla2xxx-udev.sh.  Proposed changes should be mailed to
+		[e-mail]

drivers/scsi/qla2xxx/qla_dbg.c

···
 	return ptr + sizeof(struct qla2xxx_mq_chain);
 }
 
+static void
+qla2xxx_dump_post_process(scsi_qla_host_t *vha, int rval)
+{
+	struct qla_hw_data *ha = vha->hw;
+
+	if (rval != QLA_SUCCESS) {
+		qla_printk(KERN_WARNING, ha,
+		    "Failed to dump firmware (%x)!!!\n", rval);
+		ha->fw_dumped = 0;
+	} else {
+		qla_printk(KERN_INFO, ha,
+		    "Firmware dump saved to temp buffer (%ld/%p).\n",
+		    vha->host_no, ha->fw_dump);
+		ha->fw_dumped = 1;
+		qla2x00_post_uevent_work(vha, QLA_UEVENT_CODE_FW_DUMP);
+	}
+}
+
 /**
  * qla2300_fw_dump() - Dumps binary data from the 2300 firmware.
  * @ha: HA context
···
 	if (rval == QLA_SUCCESS)
 		qla2xxx_copy_queues(ha, nxt);
 
-	if (rval != QLA_SUCCESS) {
-		qla_printk(KERN_WARNING, ha,
-		    "Failed to dump firmware (%x)!!!\n", rval);
-		ha->fw_dumped = 0;
-
-	} else {
-		qla_printk(KERN_INFO, ha,
-		    "Firmware dump saved to temp buffer (%ld/%p).\n",
-		    base_vha->host_no, ha->fw_dump);
-		ha->fw_dumped = 1;
-	}
+	qla2xxx_dump_post_process(base_vha, rval);
 
 qla2300_fw_dump_failed:
 	if (!hardware_locked)
···
 	if (rval == QLA_SUCCESS)
 		qla2xxx_copy_queues(ha, &fw->risc_ram[cnt]);
 
-	if (rval != QLA_SUCCESS) {
-		qla_printk(KERN_WARNING, ha,
-		    "Failed to dump firmware (%x)!!!\n", rval);
-		ha->fw_dumped = 0;
-
-	} else {
-		qla_printk(KERN_INFO, ha,
-		    "Firmware dump saved to temp buffer (%ld/%p).\n",
-		    base_vha->host_no, ha->fw_dump);
-		ha->fw_dumped = 1;
-	}
+	qla2xxx_dump_post_process(base_vha, rval);
 
 qla2100_fw_dump_failed:
 	if (!hardware_locked)
···
 	qla24xx_copy_eft(ha, nxt);
 
 qla24xx_fw_dump_failed_0:
-	if (rval != QLA_SUCCESS) {
-		qla_printk(KERN_WARNING, ha,
-		    "Failed to dump firmware (%x)!!!\n", rval);
-		ha->fw_dumped = 0;
-
-	} else {
-		qla_printk(KERN_INFO, ha,
-		    "Firmware dump saved to temp buffer (%ld/%p).\n",
-		    base_vha->host_no, ha->fw_dump);
-		ha->fw_dumped = 1;
-	}
+	qla2xxx_dump_post_process(base_vha, rval);
 
 qla24xx_fw_dump_failed:
 	if (!hardware_locked)
···
 	}
 
 qla25xx_fw_dump_failed_0:
-	if (rval != QLA_SUCCESS) {
-		qla_printk(KERN_WARNING, ha,
-		    "Failed to dump firmware (%x)!!!\n", rval);
-		ha->fw_dumped = 0;
-
-	} else {
-		qla_printk(KERN_INFO, ha,
-		    "Firmware dump saved to temp buffer (%ld/%p).\n",
-		    base_vha->host_no, ha->fw_dump);
-		ha->fw_dumped = 1;
-	}
+	qla2xxx_dump_post_process(base_vha, rval);
 
 qla25xx_fw_dump_failed:
 	if (!hardware_locked)
···
 	}
 
 qla81xx_fw_dump_failed_0:
-	if (rval != QLA_SUCCESS) {
-		qla_printk(KERN_WARNING, ha,
-		    "Failed to dump firmware (%x)!!!\n", rval);
-		ha->fw_dumped = 0;
-
-	} else {
-		qla_printk(KERN_INFO, ha,
-		    "Firmware dump saved to temp buffer (%ld/%p).\n",
-		    base_vha->host_no, ha->fw_dump);
-		ha->fw_dumped = 1;
-	}
+	qla2xxx_dump_post_process(base_vha, rval);
 
 qla81xx_fw_dump_failed:
 	if (!hardware_locked)

drivers/scsi/qla2xxx/qla_def.h

···
 	QLA_EVT_ASYNC_LOGIN_DONE,
 	QLA_EVT_ASYNC_LOGOUT,
 	QLA_EVT_ASYNC_LOGOUT_DONE,
+	QLA_EVT_UEVENT,
 };
 
 
···
 #define QLA_LOGIO_LOGIN_RETRIED	BIT_0
 			u16 data[2];
 		} logio;
+		struct {
+			u32 code;
+#define QLA_UEVENT_CODE_FW_DUMP	0
+		} uevent;
 	} u;
 };
 

drivers/scsi/qla2xxx/qla_gbl.h

···
     uint16_t *);
 extern int qla2x00_post_async_logout_done_work(struct scsi_qla_host *,
     fc_port_t *, uint16_t *);
+extern int qla2x00_post_uevent_work(struct scsi_qla_host *, u32);
 
 extern int qla81xx_restart_mpi_firmware(scsi_qla_host_t *);
 

drivers/scsi/qla2xxx/qla_os.c

···
 #include <linux/delay.h>
 #include <linux/kthread.h>
 #include <linux/mutex.h>
+#include <linux/kobject.h>
 
 #include <scsi/scsi_tcq.h>
 #include <scsi/scsicam.h>
···
 qla2x00_post_async_work(logout, QLA_EVT_ASYNC_LOGOUT);
 qla2x00_post_async_work(logout_done, QLA_EVT_ASYNC_LOGOUT_DONE);
 
+int
+qla2x00_post_uevent_work(struct scsi_qla_host *vha, u32 code)
+{
+	struct qla_work_evt *e;
+
+	e = qla2x00_alloc_work(vha, QLA_EVT_UEVENT);
+	if (!e)
+		return QLA_FUNCTION_FAILED;
+
+	e->u.uevent.code = code;
+	return qla2x00_post_work(vha, e);
+}
+
+static void
+qla2x00_uevent_emit(struct scsi_qla_host *vha, u32 code)
+{
+	char event_string[40];
+	char *envp[] = { event_string, NULL };
+
+	switch (code) {
+	case QLA_UEVENT_CODE_FW_DUMP:
+		snprintf(event_string, sizeof(event_string), "FW_DUMP=%ld",
+		    vha->host_no);
+		break;
+	default:
+		/* do nothing */
+		break;
+	}
+	kobject_uevent_env(&vha->hw->pdev->dev.kobj, KOBJ_CHANGE, envp);
+}
+
 void
 qla2x00_do_work(struct scsi_qla_host *vha)
 {
···
 		case QLA_EVT_ASYNC_LOGOUT_DONE:
 			qla2x00_async_logout_done(vha, e->u.logio.fcport,
 			    e->u.logio.data);
+			break;
+		case QLA_EVT_UEVENT:
+			qla2x00_uevent_emit(vha, e->u.uevent.code);
 			break;
 		}
 		if (e->flags & QLA_EVT_FLAG_FREE)