The internal id/lun mapping of st_vsc and st_vsc1 controllers is different
from st_shasta. The original driver code can only map first 16 'entities'
for st_vsc and st_vsc1 while there are actually 128 available.
Also the ST_MAX_LUN_PER_TARGET should be 8, although this can do
no harm because inquiries beyond boundary are discarded by firmware.
The correct internal mapping should be:
id:0~15, lun:0~7 (st_shasta)
id:0, lun:0~127 (st_yosemite)
id:0~127, lun:0 (st_vsc and st_vsc1)
To scsi mid layer they are all channel:0~7, id:0~15, lun:0, with a maximun
'entity' number of 128. The RAID console only interfaces to scsi mid layer
and is always mapped at channel:0, id:16, lun:0.
Signed-off-by: Ed Lin <ed.lin@xxxxxxxxxxx>
---
diff --git a/drivers/scsi/stex.c b/drivers/scsi/stex.c
index 69be132..4d68533 100644
--- a/drivers/scsi/stex.c
+++ b/drivers/scsi/stex.c
@@ -115,7 +115,7 @@ enum {
ST_MAX_ARRAY_SUPPORTED = 16,
ST_MAX_TARGET_NUM = (ST_MAX_ARRAY_SUPPORTED+1),
- ST_MAX_LUN_PER_TARGET = 16,
+ ST_MAX_LUN_PER_TARGET = 8,
st_shasta = 0,
st_vsc = 1,
@@ -645,12 +645,16 @@ stex_queuecommand(struct scsi_cmnd *cmd,
req = stex_alloc_req(hba);
- if (hba->cardtype == st_yosemite) {
- req->lun = lun * (ST_MAX_TARGET_NUM - 1) + id;
- req->target = 0;
- } else {
+ if (hba->cardtype == st_shasta) {
req->lun = lun;
req->target = id;
+ } else if (hba->cardtype == st_yosemite){
+ req->lun = id * ST_MAX_LUN_PER_TARGET + lun;
+ req->target = 0;
+ } else {
+ /* st_vsc and st_vsc1 */
+ req->lun = 0;
+ req->target = id * ST_MAX_LUN_PER_TARGET + lun;
}
/* cdb */
-
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