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Commit 6907869d authored by Giridhar Malavali's avatar Giridhar Malavali Committed by James Bottomley
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[SCSI] qla2xxx: Enable CRB based doorbell posting for request queue as default for ISP 82xx. 



Signed-off-by: default avatarGiridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@suse.de>
parent ba77ef53

drivers/scsi/qla2xxx/qla_nx.c

+9 −4
Original line number Diff line number Diff line
@@ -3372,13 +3372,18 @@ qla82xx_start_iocbs(srb_t *sp) 
	dbval = 0x04 | (ha->portnum << 5);



	dbval = dbval | (req->id << 8) | (req->ring_index << 16);

	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);

			WRT_REG_DWORD((unsigned long  __iomem *)ha->nxdb_wr_ptr,

				dbval);

			wmb();

		}

	}

}



/*

 * qla82xx_device_bootstrap

drivers/scsi/qla2xxx/qla_os.c

+1 −1
Original line number Diff line number Diff line
@@ -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"