diff options
| author | Giridhar Malavali <giridhar.malavali@qlogic.com> | 2010-05-28 15:08:28 -0700 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2010-07-27 12:01:27 -0500 |
| commit | 6907869d726c04362122afd92717f86915a69f96 (patch) | |
| tree | 2c522b76a5352a35a6344373c05ef9ef4eaf2d12 /drivers/scsi/qla2xxx | |
| parent | ba77ef53547883b6be06c0657d5dc1642ad43d0c (diff) | |
| download | linux-6907869d726c04362122afd92717f86915a69f96.tar.bz2 | |
[SCSI] qla2xxx: Enable CRB based doorbell posting for request queue as default for ISP 82xx.
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/qla2xxx')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_nx.c | 13 | ||||
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_os.c | 2 |
2 files changed, 10 insertions, 5 deletions
diff --git a/drivers/scsi/qla2xxx/qla_nx.c b/drivers/scsi/qla2xxx/qla_nx.c index ee575b4efbee..e3e3ebdfe5d9 100644 --- a/drivers/scsi/qla2xxx/qla_nx.c +++ b/drivers/scsi/qla2xxx/qla_nx.c @@ -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(); + } } } diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index bc35ecfbc28f..5be8db748964 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -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" |