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scsi: hisi_sas: change ncq process for v3 hw

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For v3 hw, each NCQ will return a CQ, so it is no need to acquire IPTT from
ITCT, just acquire it from IPTT field of CQ.

Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Xiang Chen 2017-12-09 01:16:39 +08:00 committed by Martin K. Petersen
parent e402acdb66
commit 9f347b2fac
1 changed files with 6 additions and 34 deletions
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40
drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
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@ -1653,9 +1653,8 @@ static void cq_tasklet_v3_hw(unsigned long val)
struct hisi_sas_cq *cq = (struct hisi_sas_cq *)val;
struct hisi_hba *hisi_hba = cq->hisi_hba;
struct hisi_sas_slot *slot;
struct hisi_sas_itct *itct;
struct hisi_sas_complete_v3_hdr *complete_queue;
u32 rd_point = cq->rd_point, wr_point, dev_id;
u32 rd_point = cq->rd_point, wr_point;
int queue = cq->id;
struct hisi_sas_dq *dq = &hisi_hba->dq[queue];
@ -1671,38 +1670,11 @@ static void cq_tasklet_v3_hw(unsigned long val)
complete_hdr = &complete_queue[rd_point];
/* Check for NCQ completion */
if (complete_hdr->act) {
u32 act_tmp = complete_hdr->act;
int ncq_tag_count = ffs(act_tmp);
dev_id = (complete_hdr->dw1 & CMPLT_HDR_DEV_ID_MSK) >>
CMPLT_HDR_DEV_ID_OFF;
itct = &hisi_hba->itct[dev_id];
/* The NCQ tags are held in the itct header */
while (ncq_tag_count) {
__le64 *ncq_tag = &itct->qw4_15[0];
ncq_tag_count -= 1;
iptt = (ncq_tag[ncq_tag_count / 5]
>> (ncq_tag_count % 5) * 12) & 0xfff;
slot = &hisi_hba->slot_info[iptt];
slot->cmplt_queue_slot = rd_point;
slot->cmplt_queue = queue;
slot_complete_v3_hw(hisi_hba, slot);
act_tmp &= ~(1 << ncq_tag_count);
ncq_tag_count = ffs(act_tmp);
}
} else {
iptt = (complete_hdr->dw1) & CMPLT_HDR_IPTT_MSK;
slot = &hisi_hba->slot_info[iptt];
slot->cmplt_queue_slot = rd_point;
slot->cmplt_queue = queue;
slot_complete_v3_hw(hisi_hba, slot);
}
iptt = (complete_hdr->dw1) & CMPLT_HDR_IPTT_MSK;
slot = &hisi_hba->slot_info[iptt];
slot->cmplt_queue_slot = rd_point;
slot->cmplt_queue = queue;
slot_complete_v3_hw(hisi_hba, slot);
if (++rd_point >= HISI_SAS_QUEUE_SLOTS)
rd_point = 0;