Adds roc APIs roc_nix_cq_head_tail_get, roc_nix_sq_head_tail_get
to get head-tail of receive and transmit queue respectively.
Signed-off-by: Rahul Bhansali <rbhans...@marvell.com>
---
v2 changes:
- No change
drivers/common/cnxk/roc_nix.h | 4 +++
drivers/common/cnxk/roc_nix_queue.c | 53 +++++++++++++++++++++++++++++
drivers/common/cnxk/version.map | 2 ++
3 files changed, 59 insertions(+)
diff --git a/drivers/common/cnxk/roc_nix.h b/drivers/common/cnxk/roc_nix.h
index 69a5e8e7b4..d79abfef9f 100644
--- a/drivers/common/cnxk/roc_nix.h
+++ b/drivers/common/cnxk/roc_nix.h
@@ -795,8 +795,12 @@ int __roc_api roc_nix_rq_ena_dis(struct roc_nix_rq *rq,
bool enable);
int __roc_api roc_nix_rq_fini(struct roc_nix_rq *rq);
int __roc_api roc_nix_cq_init(struct roc_nix *roc_nix, struct roc_nix_cq *cq);
int __roc_api roc_nix_cq_fini(struct roc_nix_cq *cq);
+void __roc_api roc_nix_cq_head_tail_get(struct roc_nix *roc_nix, uint16_t qid,
+ uint32_t *head, uint32_t *tail);
int __roc_api roc_nix_sq_init(struct roc_nix *roc_nix, struct roc_nix_sq *sq);
int __roc_api roc_nix_sq_fini(struct roc_nix_sq *sq);
+void __roc_api roc_nix_sq_head_tail_get(struct roc_nix *roc_nix, uint16_t qid,
+ uint32_t *head, uint32_t *tail);
/* PTP */
int __roc_api roc_nix_ptp_rx_ena_dis(struct roc_nix *roc_nix, int enable);
diff --git a/drivers/common/cnxk/roc_nix_queue.c
b/drivers/common/cnxk/roc_nix_queue.c
index c638cd43e4..67f83acdf2 100644
--- a/drivers/common/cnxk/roc_nix_queue.c
+++ b/drivers/common/cnxk/roc_nix_queue.c
@@ -969,3 +969,56 @@ roc_nix_sq_fini(struct roc_nix_sq *sq)
return rc;
}
+
+void
+roc_nix_cq_head_tail_get(struct roc_nix *roc_nix, uint16_t qid, uint32_t *head,
+ uint32_t *tail)
+{
+ struct nix *nix = roc_nix_to_nix_priv(roc_nix);
+ uint64_t reg, val;
+ int64_t *addr;
+
+ if (head == NULL || tail == NULL)
+ return;
+
+ reg = (((uint64_t)qid) << 32);
+ addr = (int64_t *)(nix->base + NIX_LF_CQ_OP_STATUS);
+ val = roc_atomic64_add_nosync(reg, addr);
+ if (val &
+ (BIT_ULL(NIX_CQ_OP_STAT_OP_ERR) | BIT_ULL(NIX_CQ_OP_STAT_CQ_ERR)))
+ val = 0;
+
+ *tail = (uint32_t)(val & 0xFFFFF);
+ *head = (uint32_t)((val >> 20) & 0xFFFFF);
+}
+
+void
+roc_nix_sq_head_tail_get(struct roc_nix *roc_nix, uint16_t qid, uint32_t *head,
+ uint32_t *tail)
+{
+ struct nix *nix = roc_nix_to_nix_priv(roc_nix);
+ struct roc_nix_sq *sq = nix->sqs[qid];
+ uint16_t sqes_per_sqb, sqb_cnt;
+ uint64_t reg, val;
+ int64_t *addr;
+
+ if (head == NULL || tail == NULL)
+ return;
+
+ reg = (((uint64_t)qid) << 32);
+ addr = (int64_t *)(nix->base + NIX_LF_SQ_OP_STATUS);
+ val = roc_atomic64_add_nosync(reg, addr);
+ if (val & BIT_ULL(NIX_CQ_OP_STAT_OP_ERR)) {
+ val = 0;
+ return;
+ }
+
+ *tail = (uint32_t)((val >> 28) & 0x3F);
+ *head = (uint32_t)((val >> 20) & 0x3F);
+ sqb_cnt = (uint16_t)(val & 0xFFFF);
+
+ sqes_per_sqb = 1 << sq->sqes_per_sqb_log2;
+
+ /* Update tail index as per used sqb count */
+ *tail += (sqes_per_sqb * (sqb_cnt - 1));
+}
diff --git a/drivers/common/cnxk/version.map b/drivers/common/cnxk/version.map
index 07c6720f0c..a9dba47e0e 100644
--- a/drivers/common/cnxk/version.map
+++ b/drivers/common/cnxk/version.map
@@ -107,6 +107,7 @@ INTERNAL {
roc_nix_bpf_timeunit_get;
roc_nix_cq_dump;
roc_nix_cq_fini;
+ roc_nix_cq_head_tail_get;
roc_nix_cq_init;
roc_nix_cqe_dump;
roc_nix_dev_fini;
@@ -222,6 +223,7 @@ INTERNAL {
roc_nix_rx_queue_intr_enable;
roc_nix_sq_dump;
roc_nix_sq_fini;
+ roc_nix_sq_head_tail_get;
roc_nix_sq_init;
roc_nix_stats_get;
roc_nix_stats_queue_get;
--
2.25.1
