diff options
| author | Anand Kumar Santhanam <AnandKumar.Santhanam@pmcs.com> | 2013-09-18 09:42:59 +0400 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2013-10-25 12:58:14 +0400 |
| commit | f9cd6cbd80d1d5963ffd0eab3970235cd4205984 (patch) | |
| tree | 9754416cbfeaff6570c6f838e594c1fd93858038 /drivers/scsi | |
| parent | e912457bb8a2fc56e7036c5837e2947b430e93e1 (diff) | |
| download | linux-f9cd6cbd80d1d5963ffd0eab3970235cd4205984.tar.xz | |
[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>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/pm8001/pm80xx_hwi.c | 31 |
1 files changed, 13 insertions, 18 deletions
diff --git a/drivers/scsi/pm8001/pm80xx_hwi.c b/drivers/scsi/pm8001/pm80xx_hwi.c index 8bac5aeaa804..fa06f24e1656 100644 --- a/drivers/scsi/pm8001/pm80xx_hwi.c +++ b/drivers/scsi/pm8001/pm80xx_hwi.c @@ -3612,8 +3612,7 @@ static int pm80xx_chip_ssp_io_req(struct pm8001_hba_info *pm8001_ha, 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 @@ static int pm80xx_chip_ssp_io_req(struct pm8001_hba_info *pm8001_ha, 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 @@ static int pm80xx_chip_ssp_io_req(struct pm8001_hba_info *pm8001_ha, } 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 @@ static int pm80xx_chip_ssp_io_req(struct pm8001_hba_info *pm8001_ha, 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 @@ static int pm80xx_chip_sata_req(struct pm8001_hba_info *pm8001_ha, 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 @@ static int pm80xx_chip_sata_req(struct pm8001_hba_info *pm8001_ha, 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 @@ static int pm80xx_chip_sata_req(struct pm8001_hba_info *pm8001_ha, } 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 @@ static int pm80xx_chip_sata_req(struct pm8001_hba_info *pm8001_ha, } } } - + 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; } |