[SCSI] pm80xx: Queue rotation logic for inbound and outbound queues.
Signed-off-by: Anandkumar.Santhanam@pmcs.com
Reviewed-by: Jack Wang <jinpu.wang@profitbricks.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/pm8001/pm80xx_hwi.c b/drivers/scsi/pm8001/pm80xx_hwi.c
index 8bac5ae..fa06f24 100644
--- a/drivers/scsi/pm8001/pm80xx_hwi.c
+++ b/drivers/scsi/pm8001/pm80xx_hwi.c
@@ -3612,8 +3612,7 @@
int ret;
u64 phys_addr;
struct inbound_queue_table *circularQ;
- static u32 inb;
- static u32 outb;
+ u32 q_index;
u32 opc = OPC_INB_SSPINIIOSTART;
memset(&ssp_cmd, 0, sizeof(ssp_cmd));
memcpy(ssp_cmd.ssp_iu.lun, task->ssp_task.LUN, 8);
@@ -3632,7 +3631,8 @@
ssp_cmd.ssp_iu.efb_prio_attr |= (task->ssp_task.task_attr & 7);
memcpy(ssp_cmd.ssp_iu.cdb, task->ssp_task.cmd->cmnd,
task->ssp_task.cmd->cmd_len);
- circularQ = &pm8001_ha->inbnd_q_tbl[0];
+ q_index = (u32) (pm8001_dev->id & 0x00ffffff) % PM8001_MAX_INB_NUM;
+ circularQ = &pm8001_ha->inbnd_q_tbl[q_index];
/* Check if encryption is set */
if (pm8001_ha->chip->encrypt &&
@@ -3680,7 +3680,7 @@
} else {
PM8001_IO_DBG(pm8001_ha, pm8001_printk(
"Sending Normal SAS command 0x%x inb q %x\n",
- task->ssp_task.cmd->cmnd[0], inb));
+ task->ssp_task.cmd->cmnd[0], q_index));
/* fill in PRD (scatter/gather) table, if any */
if (task->num_scatter > 1) {
pm8001_chip_make_sg(task->scatter, ccb->n_elem,
@@ -3706,11 +3706,9 @@
ssp_cmd.esgl = 0;
}
}
- ret = pm8001_mpi_build_cmd(pm8001_ha, circularQ, opc, &ssp_cmd, outb++);
-
- /* rotate the outb queue */
- outb = outb%PM8001_MAX_SPCV_OUTB_NUM;
-
+ q_index = (u32) (pm8001_dev->id & 0x00ffffff) % PM8001_MAX_OUTB_NUM;
+ ret = pm8001_mpi_build_cmd(pm8001_ha, circularQ, opc,
+ &ssp_cmd, q_index);
return ret;
}
@@ -3722,8 +3720,7 @@
struct pm8001_device *pm8001_ha_dev = dev->lldd_dev;
u32 tag = ccb->ccb_tag;
int ret;
- static u32 inb;
- static u32 outb;
+ u32 q_index;
struct sata_start_req sata_cmd;
u32 hdr_tag, ncg_tag = 0;
u64 phys_addr;
@@ -3733,7 +3730,8 @@
unsigned long flags;
u32 opc = OPC_INB_SATA_HOST_OPSTART;
memset(&sata_cmd, 0, sizeof(sata_cmd));
- circularQ = &pm8001_ha->inbnd_q_tbl[0];
+ q_index = (u32) (pm8001_ha_dev->id & 0x00ffffff) % PM8001_MAX_INB_NUM;
+ circularQ = &pm8001_ha->inbnd_q_tbl[q_index];
if (task->data_dir == PCI_DMA_NONE) {
ATAP = 0x04; /* no data*/
@@ -3814,7 +3812,7 @@
} else {
PM8001_IO_DBG(pm8001_ha, pm8001_printk(
"Sending Normal SATA command 0x%x inb %x\n",
- sata_cmd.sata_fis.command, inb));
+ sata_cmd.sata_fis.command, q_index));
/* dad (bit 0-1) is 0 */
sata_cmd.ncqtag_atap_dir_m_dad =
cpu_to_le32(((ncg_tag & 0xff)<<16) |
@@ -3911,12 +3909,9 @@
}
}
}
-
+ q_index = (u32) (pm8001_ha_dev->id & 0x00ffffff) % PM8001_MAX_OUTB_NUM;
ret = pm8001_mpi_build_cmd(pm8001_ha, circularQ, opc,
- &sata_cmd, outb++);
-
- /* rotate the outb queue */
- outb = outb%PM8001_MAX_SPCV_OUTB_NUM;
+ &sata_cmd, q_index);
return ret;
}