diff options
Diffstat (limited to 'drivers/scsi/hisi_sas/hisi_sas_v3_hw.c')
| -rw-r--r-- | drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 28 |
1 files changed, 21 insertions, 7 deletions
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c index 8cd13744a090..56f1046b244c 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c @@ -840,23 +840,37 @@ get_free_slot_v3_hw(struct hisi_hba *hisi_hba, struct hisi_sas_dq *dq) r = hisi_sas_read32_relaxed(hisi_hba, DLVRY_Q_0_RD_PTR + (queue * 0x14)); if (r == (w+1) % HISI_SAS_QUEUE_SLOTS) { - dev_warn(dev, "full queue=%d r=%d w=%d\n\n", + dev_warn(dev, "full queue=%d r=%d w=%d\n", queue, r, w); return -EAGAIN; } - return 0; + dq->wr_point = (dq->wr_point + 1) % HISI_SAS_QUEUE_SLOTS; + + return w; } static void start_delivery_v3_hw(struct hisi_sas_dq *dq) { struct hisi_hba *hisi_hba = dq->hisi_hba; - int dlvry_queue = dq->slot_prep->dlvry_queue; - int dlvry_queue_slot = dq->slot_prep->dlvry_queue_slot; + struct hisi_sas_slot *s, *s1; + struct list_head *dq_list; + int dlvry_queue = dq->id; + int wp, count = 0; + + dq_list = &dq->list; + list_for_each_entry_safe(s, s1, &dq->list, delivery) { + if (!s->ready) + break; + count++; + wp = (s->dlvry_queue_slot + 1) % HISI_SAS_QUEUE_SLOTS; + list_del(&s->delivery); + } + + if (!count) + return; - dq->wr_point = ++dlvry_queue_slot % HISI_SAS_QUEUE_SLOTS; - hisi_sas_write32(hisi_hba, DLVRY_Q_0_WR_PTR + (dlvry_queue * 0x14), - dq->wr_point); + hisi_sas_write32(hisi_hba, DLVRY_Q_0_WR_PTR + (dlvry_queue * 0x14), wp); } static void prep_prd_sge_v3_hw(struct hisi_hba *hisi_hba, |