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[SCSI] scsi_dh_rdac : Add definitions for different RDAC operating modes 

This patch adds definitions to support for different operating modes
for LSI rdac storage.  Currently, rdac support 3 operation modes.

1. RDAC mode(legacy)
2. AVT mode
3. IOSHIP mode

These definitions are used while activating the path(rdac_activate).

Signed-off-by: Babu Moger <babu.moger@lsi.com>
Reviewed-by: Yanling Qi <yanling.qi@lsi.com>
Reviewed-by: Sudhir Dachepalli <Sudhir.Dachepalli@lis.com>
Reviewed-by: Somasundaram Krishnasamy <Somasundaram.Krishnasamy@lsi.com>
Reviewed-by: Bob Stankey <Robert.Stankey@lsi.com>
Reviewed-by: Vijay Chauhan <Vijay.Chauhan@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Moger, Babu 2011-04-08 11:37:40 -06:00 committed by James Bottomley
parent 630ad8317f
commit eebe9b96dd
1 changed files with 19 additions and 3 deletions
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22
drivers/scsi/device_handler/scsi_dh_rdac.c
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@ -182,6 +182,12 @@ struct rdac_dh_data {
struct rdac_controller *ctlr; struct rdac_controller *ctlr;
#define UNINITIALIZED_LUN (1 << 8) #define UNINITIALIZED_LUN (1 << 8)
unsigned lun; unsigned lun;
#define RDAC_MODE 0
#define RDAC_MODE_AVT 1
#define RDAC_MODE_IOSHIP 2
unsigned char mode;
#define RDAC_STATE_ACTIVE 0 #define RDAC_STATE_ACTIVE 0
#define RDAC_STATE_PASSIVE 1 #define RDAC_STATE_PASSIVE 1
unsigned char state; unsigned char state;
@ -190,6 +196,11 @@ struct rdac_dh_data {
#define RDAC_LUN_OWNED 1 #define RDAC_LUN_OWNED 1
#define RDAC_LUN_AVT 2 #define RDAC_LUN_AVT 2
char lun_state; char lun_state;
#define RDAC_PREFERRED 0
#define RDAC_NON_PREFERRED 1
char preferred;
unsigned char sense[SCSI_SENSE_BUFFERSIZE]; unsigned char sense[SCSI_SENSE_BUFFERSIZE];
union { union {
struct c2_inquiry c2; struct c2_inquiry c2;
@ -199,11 +210,15 @@ struct rdac_dh_data {
} inq; } inq;
}; };
static const char *mode[] = {
"RDAC",
"AVT",
"IOSHIP",
};
static const char *lun_state[] = static const char *lun_state[] =
{ {
"unowned", "unowned",
"owned", "owned",
"owned (AVT mode)",
}; };
struct rdac_queue_data { struct rdac_queue_data {
@ -836,8 +851,9 @@ static int rdac_bus_attach(struct scsi_device *sdev)
spin_unlock_irqrestore(sdev->request_queue->queue_lock, flags); spin_unlock_irqrestore(sdev->request_queue->queue_lock, flags);
sdev_printk(KERN_NOTICE, sdev, sdev_printk(KERN_NOTICE, sdev,
"%s: LUN %d (%s)\n", "%s: LUN %d (%s) (%s)\n",
RDAC_NAME, h->lun, lun_state[(int)h->lun_state]); RDAC_NAME, h->lun, mode[(int)h->mode],
lun_state[(int)h->lun_state]);
return 0; return 0;