[05/16] nvme: use constants in identify

Commit Message

Klaus Jensen April 15, 2020, 10:24 a.m. UTC

From: Klaus Jensen <[e-mail]>

Signed-off-by: Klaus Jensen <[e-mail]>
Reviewed-by: Maxim Levitsky <[e-mail]>
Reviewed-by: Philippe Mathieu-Daudé <[e-mail]>
---
 hw/block/nvme.c      | 8 ++++----
 include/block/nvme.h | 8 ++++++++
 2 files changed, 12 insertions(+), 4 deletions(-)

Patch

diff --git a/hw/block/nvme.c b/hw/block/nvme.c
index 7ddfe8a21b03..12f97aed0c15 100644
--- a/hw/block/nvme.c
+++ b/hw/block/nvme.c
@@ -679,7 +679,7 @@  static uint16_t nvme_identify_ns(NvmeCtrl *n, NvmeIdentify *c)
 
 static uint16_t nvme_identify_nslist(NvmeCtrl *n, NvmeIdentify *c)
 {
-    static const int data_len = 4 * KiB;
+    static const int data_len = NVME_IDENTIFY_DATA_SIZE;
     uint32_t min_nsid = le32_to_cpu(c->nsid);
     uint64_t prp1 = le64_to_cpu(c->prp1);
     uint64_t prp2 = le64_to_cpu(c->prp2);
@@ -709,11 +709,11 @@  static uint16_t nvme_identify(NvmeCtrl *n, NvmeCmd *cmd)
     NvmeIdentify *c = (NvmeIdentify *)cmd;
 
     switch (le32_to_cpu(c->cns)) {
-    case 0x00:
+    case NVME_ID_CNS_NS:
         return nvme_identify_ns(n, c);
-    case 0x01:
+    case NVME_ID_CNS_CTRL:
         return nvme_identify_ctrl(n, c);
-    case 0x02:
+    case NVME_ID_CNS_NS_ACTIVE_LIST:
         return nvme_identify_nslist(n, c);
     default:
         trace_nvme_dev_err_invalid_identify_cns(le32_to_cpu(c->cns));
diff --git a/include/block/nvme.h b/include/block/nvme.h
index 8fb941c6537c..c2fd01cf2f1d 100644
--- a/include/block/nvme.h
+++ b/include/block/nvme.h
@@ -533,6 +533,14 @@  typedef struct NvmePSD {
     uint8_t     resv[16];
 } NvmePSD;
 
+#define NVME_IDENTIFY_DATA_SIZE 4096
+
+enum {
+    NVME_ID_CNS_NS             = 0x0,
+    NVME_ID_CNS_CTRL           = 0x1,
+    NVME_ID_CNS_NS_ACTIVE_LIST = 0x2,
+};
+
 typedef struct NvmeIdCtrl {
     uint16_t    vid;
     uint16_t    ssvid;