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[SCSI] qla2xxx: Enable CRB based doorbell posting for request queue as default for ISP 82xx.

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Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Giridhar Malavali 2010-05-28 15:08:28 -07:00 committed by James Bottomley
parent ba77ef5354
commit 6907869d72
2 changed files with 10 additions and 5 deletions
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13
drivers/scsi/qla2xxx/qla_nx.c
View File

@ -3372,11 +3372,16 @@ qla82xx_start_iocbs(srb_t *sp)
dbval = 0x04 | (ha->portnum << 5);
dbval = dbval | (req->id << 8) | (req->ring_index << 16);
WRT_REG_DWORD((unsigned long __iomem *)ha->nxdb_wr_ptr, dbval);
wmb();
while (RD_REG_DWORD(ha->nxdb_rd_ptr) != dbval) {
WRT_REG_DWORD((unsigned long __iomem *)ha->nxdb_wr_ptr, dbval);
if (ql2xdbwr)
qla82xx_wr_32(ha, ha->nxdb_wr_ptr, dbval);
else {
WRT_REG_DWORD((unsigned long __iomem *)ha->nxdb_wr_ptr, dbval);
wmb();
while (RD_REG_DWORD(ha->nxdb_rd_ptr) != dbval) {
WRT_REG_DWORD((unsigned long __iomem *)ha->nxdb_wr_ptr,
dbval);
wmb();
}
}
}

2
drivers/scsi/qla2xxx/qla_os.c
View File

@ -140,7 +140,7 @@ MODULE_PARM_DESC(ql2xetsenable,
"Enables firmware ETS burst."
"Default is 0 - skip ETS enablement.");
int ql2xdbwr;
int ql2xdbwr = 1;
module_param(ql2xdbwr, int, S_IRUGO|S_IRUSR);
MODULE_PARM_DESC(ql2xdbwr,
"Option to specify scheme for request queue posting\n"