[SCSI] qla2xxx: Rework firmware-trace facilities.

- Defer firmware dump-data raw-to-textual conversion to
  user-space.
- Add module parameter (ql2xallocfwdump) to allow for per-HBA
  allocations of firmware dump memory.
- Dump request and response queue data as per firmware group
  request.
- Add extended firmware trace support for ISP24XX/ISP54XX chips.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

drivers/scsi/qla2xxx/qla_attr.c

@@ -16,15 +16,16 @@ qla2x00_sysfs_read_fw_dump(struct kobject *kobj, char *buf, loff_t off,
 {
 	struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
 	    struct device, kobj)));
+	char *rbuf = (char *)ha->fw_dump;
 
 	if (ha->fw_dump_reading == 0)
 		return 0;
-	if (off > ha->fw_dump_buffer_len)
-		return 0;
-	if (off + count > ha->fw_dump_buffer_len)
-		count = ha->fw_dump_buffer_len - off;
+	if (off > ha->fw_dump_len)
+                return 0;
+	if (off + count > ha->fw_dump_len)
+		count = ha->fw_dump_len - off;
 
-	memcpy(buf, &ha->fw_dump_buffer[off], count);
+	memcpy(buf, &rbuf[off], count);
 
 	return (count);
 }
@@ -36,54 +37,34 @@ qla2x00_sysfs_write_fw_dump(struct kobject *kobj, char *buf, loff_t off,
 	struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
 	    struct device, kobj)));
 	int reading;
-	uint32_t dump_size;
 
 	if (off != 0)
 		return (0);
 
 	reading = simple_strtol(buf, NULL, 10);
 	switch (reading) {
 	case 0:
-		if (ha->fw_dump_reading == 1) {
-			qla_printk(KERN_INFO, ha,
-			    "Firmware dump cleared on (%ld).\n", ha->host_no);
+		if (!ha->fw_dump_reading)
+			break;
 
-			vfree(ha->fw_dump_buffer);
-			ha->fw_dump_buffer = NULL;
-			ha->fw_dump_reading = 0;
-			ha->fw_dumped = 0;
-		}
+		qla_printk(KERN_INFO, ha,
+		    "Firmware dump cleared on (%ld).\n", ha->host_no);
+
+		ha->fw_dump_reading = 0;
+		ha->fw_dumped = 0;
 		break;
 	case 1:
 		if (ha->fw_dumped && !ha->fw_dump_reading) {
 			ha->fw_dump_reading = 1;
 
-			if (IS_QLA24XX(ha) || IS_QLA54XX(ha))
-				dump_size = FW_DUMP_SIZE_24XX;
-			else {
-				dump_size = FW_DUMP_SIZE_1M;
-				if (ha->fw_memory_size < 0x20000)
-					dump_size = FW_DUMP_SIZE_128K;
-				else if (ha->fw_memory_size < 0x80000)
-					dump_size = FW_DUMP_SIZE_512K;
-			}
-			ha->fw_dump_buffer = (char *)vmalloc(dump_size);
-			if (ha->fw_dump_buffer == NULL) {
-				qla_printk(KERN_WARNING, ha,
-				    "Unable to allocate memory for firmware "
-				    "dump buffer (%d).\n", dump_size);
-
-				ha->fw_dump_reading = 0;
-				return (count);
-			}
 			qla_printk(KERN_INFO, ha,
-			    "Firmware dump ready for read on (%ld).\n",
+			    "Raw firmware dump ready for read on (%ld).\n",
 			    ha->host_no);
-			memset(ha->fw_dump_buffer, 0, dump_size);
-			ha->isp_ops.ascii_fw_dump(ha);
-			ha->fw_dump_buffer_len = strlen(ha->fw_dump_buffer);
 		}
 		break;
+	case 2:
+		qla2x00_alloc_fw_dump(ha);
+		break;
 	}
 	return (count);
 }