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Diffstat (limited to 'drivers/scsi/hisi_sas')
-rw-r--r--drivers/scsi/hisi_sas/hisi_sas.h4
-rw-r--r--drivers/scsi/hisi_sas/hisi_sas_main.c49
-rw-r--r--drivers/scsi/hisi_sas/hisi_sas_v1_hw.c27
-rw-r--r--drivers/scsi/hisi_sas/hisi_sas_v2_hw.c29
-rw-r--r--drivers/scsi/hisi_sas/hisi_sas_v3_hw.c28
5 files changed, 96 insertions, 41 deletions
diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h
index 3a1caa04407e..52fc709dd862 100644
--- a/drivers/scsi/hisi_sas/hisi_sas.h
+++ b/drivers/scsi/hisi_sas/hisi_sas.h
@@ -161,7 +161,7 @@ struct hisi_sas_cq {
struct hisi_sas_dq {
struct hisi_hba *hisi_hba;
- struct hisi_sas_slot *slot_prep;
+ struct list_head list;
spinlock_t lock;
int wr_point;
int id;
@@ -181,6 +181,7 @@ struct hisi_sas_device {
struct hisi_sas_slot {
struct list_head entry;
+ struct list_head delivery;
struct sas_task *task;
struct hisi_sas_port *port;
u64 n_elem;
@@ -190,6 +191,7 @@ struct hisi_sas_slot {
int cmplt_queue_slot;
int idx;
int abort;
+ int ready;
void *buf;
dma_addr_t buf_dma;
void *cmd_hdr;
diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index 58cbe1f0e0b6..bf374a795962 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -307,9 +307,9 @@ out:
task->task_done(task);
}
-static int hisi_sas_task_prep(struct sas_task *task, struct hisi_sas_dq
- *dq, int is_tmf, struct hisi_sas_tmf_task *tmf,
- int *pass)
+static int hisi_sas_task_prep(struct sas_task *task, struct hisi_sas_dq *dq,
+ int is_tmf, struct hisi_sas_tmf_task *tmf,
+ int *pass)
{
struct hisi_hba *hisi_hba = dq->hisi_hba;
struct domain_device *device = task->dev;
@@ -321,7 +321,8 @@ static int hisi_sas_task_prep(struct sas_task *task, struct hisi_sas_dq
struct device *dev = hisi_hba->dev;
int dlvry_queue_slot, dlvry_queue, rc, slot_idx;
int n_elem = 0, n_elem_req = 0, n_elem_resp = 0;
- unsigned long flags;
+ unsigned long flags, flags_dq;
+ int wr_q_index;
if (!sas_port) {
struct task_status_struct *ts = &task->task_status;
@@ -422,12 +423,18 @@ static int hisi_sas_task_prep(struct sas_task *task, struct hisi_sas_dq
goto err_out_tag;
}
- rc = hisi_hba->hw->get_free_slot(hisi_hba, dq);
- if (rc)
+ spin_lock_irqsave(&dq->lock, flags_dq);
+ wr_q_index = hisi_hba->hw->get_free_slot(hisi_hba, dq);
+ if (wr_q_index < 0) {
+ spin_unlock_irqrestore(&dq->lock, flags_dq);
goto err_out_buf;
+ }
+
+ list_add_tail(&slot->delivery, &dq->list);
+ spin_unlock_irqrestore(&dq->lock, flags_dq);
dlvry_queue = dq->id;
- dlvry_queue_slot = dq->wr_point;
+ dlvry_queue_slot = wr_q_index;
slot->idx = slot_idx;
slot->n_elem = n_elem;
@@ -471,8 +478,8 @@ static int hisi_sas_task_prep(struct sas_task *task, struct hisi_sas_dq
task->task_state_flags |= SAS_TASK_AT_INITIATOR;
spin_unlock_irqrestore(&task->task_state_lock, flags);
- dq->slot_prep = slot;
++(*pass);
+ slot->ready = 1;
return 0;
@@ -518,11 +525,11 @@ static int hisi_sas_task_exec(struct sas_task *task, gfp_t gfp_flags,
return -EINVAL;
/* protect task_prep and start_delivery sequence */
- spin_lock_irqsave(&dq->lock, flags);
rc = hisi_sas_task_prep(task, dq, is_tmf, tmf, &pass);
if (rc)
dev_err(dev, "task exec: failed[%d]!\n", rc);
+ spin_lock_irqsave(&dq->lock, flags);
if (likely(pass))
hisi_hba->hw->start_delivery(dq);
spin_unlock_irqrestore(&dq->lock, flags);
@@ -1503,7 +1510,8 @@ hisi_sas_internal_abort_task_exec(struct hisi_hba *hisi_hba, int device_id,
struct hisi_sas_cmd_hdr *cmd_hdr_base;
struct hisi_sas_dq *dq = sas_dev->dq;
int dlvry_queue_slot, dlvry_queue, n_elem = 0, rc, slot_idx;
- unsigned long flags, flags_dq;
+ unsigned long flags, flags_dq = 0;
+ int wr_q_index;
if (unlikely(test_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags)))
return -EINVAL;
@@ -1531,16 +1539,18 @@ hisi_sas_internal_abort_task_exec(struct hisi_hba *hisi_hba, int device_id,
rc = -ENOMEM;
goto err_out_tag;
}
+
spin_lock_irqsave(&dq->lock, flags_dq);
- rc = hisi_hba->hw->get_free_slot(hisi_hba, dq);
- if (rc) {
- rc = -ENOMEM;
+ wr_q_index = hisi_hba->hw->get_free_slot(hisi_hba, dq);
+ if (wr_q_index < 0) {
spin_unlock_irqrestore(&dq->lock, flags_dq);
goto err_out_buf;
}
+ list_add_tail(&slot->delivery, &dq->list);
+ spin_unlock_irqrestore(&dq->lock, flags_dq);
dlvry_queue = dq->id;
- dlvry_queue_slot = dq->wr_point;
+ dlvry_queue_slot = wr_q_index;
slot->idx = slot_idx;
slot->n_elem = n_elem;
@@ -1560,18 +1570,16 @@ hisi_sas_internal_abort_task_exec(struct hisi_hba *hisi_hba, int device_id,
hisi_sas_task_prep_abort(hisi_hba, slot, device_id,
abort_flag, task_tag);
- spin_lock_irqsave(&hisi_hba->lock, flags);
- list_add_tail(&slot->entry, &sas_dev->list);
- spin_unlock_irqrestore(&hisi_hba->lock, flags);
spin_lock_irqsave(&task->task_state_lock, flags);
task->task_state_flags |= SAS_TASK_AT_INITIATOR;
spin_unlock_irqrestore(&task->task_state_lock, flags);
- dq->slot_prep = slot;
-
+ slot->ready = 1;
/* send abort command to the chip */
+ spin_lock_irqsave(&dq->lock, flags);
+ list_add_tail(&slot->entry, &sas_dev->list);
hisi_hba->hw->start_delivery(dq);
- spin_unlock_irqrestore(&dq->lock, flags_dq);
+ spin_unlock_irqrestore(&dq->lock, flags);
return 0;
@@ -1856,6 +1864,7 @@ int hisi_sas_alloc(struct hisi_hba *hisi_hba, struct Scsi_Host *shost)
/* Delivery queue structure */
spin_lock_init(&dq->lock);
+ INIT_LIST_HEAD(&dq->list);
dq->id = i;
dq->hisi_hba = hisi_hba;
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
index 7781a011a750..abe175fddb86 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
@@ -921,18 +921,33 @@ get_free_slot_v1_hw(struct hisi_hba *hisi_hba, struct hisi_sas_dq *dq)
return -EAGAIN;
}
- return 0;
+ dq->wr_point = (dq->wr_point + 1) % HISI_SAS_QUEUE_SLOTS;
+
+ return w;
}
+/* DQ lock must be taken here */
static void start_delivery_v1_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_v1_hw(struct hisi_hba *hisi_hba,
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
index 9f77fd8223f7..911bb76a4d0a 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
@@ -1663,23 +1663,38 @@ get_free_slot_v2_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;
}
+/* DQ lock must be taken here */
static void start_delivery_v2_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_v2_hw(struct hisi_hba *hisi_hba,
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,
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-24 18:07:41 +0000