[PATCH 1/2] nvme: fix create IO SQ/CQ status codes

[Klaus Jensen]

From: Gollu Appalanaidu <anaidu.gollu@samsung.com>

Replace the Invalid Field in Command with the Invalid PRP Offset status
code in the nvme_create_{cq,sq} functions. Also, allow PRP1 to be
address 0x0.

Also replace the Completion Queue Invalid status code returned in
nvme_create_cq when the the queue identifier is invalid with the Invalid
Queue Identifier. The Completion Queue Invalid status code is
exclusively for indicating that the completion queue identifer given
when creating a submission queue is invalid.

See NVM Express v1.3d, Section 5.3 ("Create I/O Completion Queue
command") and 5.4("Create I/O Submission Queue command").

Signed-off-by: Gollu Appalanaidu <anaidu.gollu@samsung.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
---
 hw/block/nvme.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/hw/block/nvme.c b/hw/block/nvme.c
index 2896bb49b9c0..5dfef0204c2c 100644
--- a/hw/block/nvme.c
+++ b/hw/block/nvme.c
@@ -1151,9 +1151,9 @@ static uint16_t nvme_create_sq(NvmeCtrl *n, NvmeRequest 
*req)
         trace_pci_nvme_err_invalid_create_sq_size(qsize);
         return NVME_MAX_QSIZE_EXCEEDED | NVME_DNR;
     }
-    if (unlikely(!prp1 || prp1 & (n->page_size - 1))) {
+    if (unlikely(prp1 & (n->page_size - 1))) {
         trace_pci_nvme_err_invalid_create_sq_addr(prp1);
-        return NVME_INVALID_FIELD | NVME_DNR;
+        return NVME_INVALID_PRP_OFFSET | NVME_DNR;
     }
     if (unlikely(!(NVME_SQ_FLAGS_PC(qflags)))) {
         trace_pci_nvme_err_invalid_create_sq_qflags(NVME_SQ_FLAGS_PC(qflags));
@@ -1400,15 +1400,15 @@ static uint16_t nvme_create_cq(NvmeCtrl *n, NvmeRequest 
*req)
 
     if (unlikely(!cqid || !nvme_check_cqid(n, cqid))) {
         trace_pci_nvme_err_invalid_create_cq_cqid(cqid);
-        return NVME_INVALID_CQID | NVME_DNR;
+        return NVME_INVALID_QID | NVME_DNR;
     }
     if (unlikely(!qsize || qsize > NVME_CAP_MQES(n->bar.cap))) {
         trace_pci_nvme_err_invalid_create_cq_size(qsize);
         return NVME_MAX_QSIZE_EXCEEDED | NVME_DNR;
     }
-    if (unlikely(!prp1)) {
+    if (unlikely(prp1 & (n->page_size - 1))) {
         trace_pci_nvme_err_invalid_create_cq_addr(prp1);
-        return NVME_INVALID_FIELD | NVME_DNR;
+        return NVME_INVALID_PRP_OFFSET | NVME_DNR;
     }
     if (unlikely(!msix_enabled(&n->parent_obj) && vector)) {
         trace_pci_nvme_err_invalid_create_cq_vector(vector);
-- 
2.28.0