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-rw-r--r--hw/nvme/ctrl.c18
-rw-r--r--hw/nvme/nvme.h1
2 files changed, 18 insertions, 1 deletions
diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c
index 5c6c7d3..629b0d3 100644
--- a/hw/nvme/ctrl.c
+++ b/hw/nvme/ctrl.c
@@ -473,7 +473,9 @@ static void nvme_irq_deassert(NvmeCtrl *n, NvmeCQueue *cq)
return;
} else {
assert(cq->vector < 32);
- n->irq_status &= ~(1 << cq->vector);
+ if (!n->cq_pending) {
+ n->irq_status &= ~(1 << cq->vector);
+ }
nvme_irq_check(n);
}
}
@@ -1253,6 +1255,7 @@ static void nvme_post_cqes(void *opaque)
NvmeCQueue *cq = opaque;
NvmeCtrl *n = cq->ctrl;
NvmeRequest *req, *next;
+ bool pending = cq->head != cq->tail;
int ret;
QTAILQ_FOREACH_SAFE(req, &cq->req_list, entry, next) {
@@ -1282,6 +1285,10 @@ static void nvme_post_cqes(void *opaque)
QTAILQ_INSERT_TAIL(&sq->req_list, req, entry);
}
if (cq->tail != cq->head) {
+ if (cq->irq_enabled && !pending) {
+ n->cq_pending++;
+ }
+
nvme_irq_assert(n, cq);
}
}
@@ -4297,6 +4304,11 @@ static uint16_t nvme_del_cq(NvmeCtrl *n, NvmeRequest *req)
trace_pci_nvme_err_invalid_del_cq_notempty(qid);
return NVME_INVALID_QUEUE_DEL;
}
+
+ if (cq->irq_enabled && cq->tail != cq->head) {
+ n->cq_pending--;
+ }
+
nvme_irq_deassert(n, cq);
trace_pci_nvme_del_cq(qid);
nvme_free_cq(cq, n);
@@ -6039,6 +6051,10 @@ static void nvme_process_db(NvmeCtrl *n, hwaddr addr, int val)
}
if (cq->tail == cq->head) {
+ if (cq->irq_enabled) {
+ n->cq_pending--;
+ }
+
nvme_irq_deassert(n, cq);
}
} else {
diff --git a/hw/nvme/nvme.h b/hw/nvme/nvme.h
index 2509b8b..56f8ece 100644
--- a/hw/nvme/nvme.h
+++ b/hw/nvme/nvme.h
@@ -410,6 +410,7 @@ typedef struct NvmeCtrl {
uint32_t max_q_ents;
uint8_t outstanding_aers;
uint32_t irq_status;
+ int cq_pending;
uint64_t host_timestamp; /* Timestamp sent by the host */
uint64_t timestamp_set_qemu_clock_ms; /* QEMU clock time */
uint64_t starttime_ms;