[PATCH v6 27/42] nvme: add request mapping helper

[Klaus Jensen]

From: Klaus Jensen <address@hidden>

Introduce the nvme_map helper to remove some noise in the main nvme_rw
function.

Signed-off-by: Klaus Jensen <address@hidden>
---
 hw/block/nvme.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/hw/block/nvme.c b/hw/block/nvme.c
index 3e9c2ed434c2..850087aac967 100644
--- a/hw/block/nvme.c
+++ b/hw/block/nvme.c
@@ -351,6 +351,15 @@ static uint16_t nvme_dma_prp(NvmeCtrl *n, uint8_t *ptr, 
uint32_t len,
     return status;
 }
 
+static uint16_t nvme_map(NvmeCtrl *n, NvmeCmd *cmd, QEMUSGList *qsg,
+                         QEMUIOVector *iov, size_t len, NvmeRequest *req)
+{
+    uint64_t prp1 = le64_to_cpu(cmd->dptr.prp1);
+    uint64_t prp2 = le64_to_cpu(cmd->dptr.prp2);
+
+    return nvme_map_prp(n, qsg, iov, prp1, prp2, len, req);
+}
+
 static void nvme_post_cqes(void *opaque)
 {
     NvmeCQueue *cq = opaque;
@@ -534,8 +543,6 @@ static uint16_t nvme_rw(NvmeCtrl *n, NvmeNamespace *ns, 
NvmeCmd *cmd,
     NvmeRwCmd *rw = (NvmeRwCmd *)cmd;
     uint32_t nlb  = le32_to_cpu(rw->nlb) + 1;
     uint64_t slba = le64_to_cpu(rw->slba);
-    uint64_t prp1 = le64_to_cpu(rw->dptr.prp1);
-    uint64_t prp2 = le64_to_cpu(rw->dptr.prp2);
 
     uint8_t lba_index  = NVME_ID_NS_FLBAS_INDEX(ns->id_ns.flbas);
     uint8_t data_shift = ns->id_ns.lbaf[lba_index].ds;
@@ -552,7 +559,7 @@ static uint16_t nvme_rw(NvmeCtrl *n, NvmeNamespace *ns, 
NvmeCmd *cmd,
         return NVME_LBA_RANGE | NVME_DNR;
     }
 
-    if (nvme_map_prp(n, &req->qsg, &req->iov, prp1, prp2, data_size, req)) {
+    if (nvme_map(n, cmd, &req->qsg, &req->iov, data_size, req)) {
         block_acct_invalid(blk_get_stats(n->conf.blk), acct);
         return NVME_INVALID_FIELD | NVME_DNR;
     }
-- 
2.25.1