[PULL 14/56] hw/block/nvme: Support allocated CNS command variants

[Klaus Jensen]

From: Niklas Cassel <niklas.cassel@wdc.com>

Many CNS commands have "allocated" command variants. These include
a namespace as long as it is allocated, that is a namespace is
included regardless if it is active (attached) or not.

While these commands are optional (they are mandatory for controllers
supporting the namespace attachment command), our QEMU implementation
is more complete by actually providing support for these CNS values.

However, since our QEMU model currently does not support the namespace
attachment command, these new allocated CNS commands will return the
same result as the active CNS command variants.

The reason for not hooking up this command completely is because the
NVMe specification requires the namespace management command to be
supported if the namespace attachment command is supported.

Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
---
 include/block/nvme.h | 20 ++++++++++++--------
 hw/block/nvme.c      |  8 ++++++++
 2 files changed, 20 insertions(+), 8 deletions(-)

diff --git a/include/block/nvme.h b/include/block/nvme.h
index 19347cf69e52..adb5806365a3 100644
--- a/include/block/nvme.h
+++ b/include/block/nvme.h
@@ -813,14 +813,18 @@ typedef struct QEMU_PACKED NvmePSD {
 #define NVME_IDENTIFY_DATA_SIZE 4096
 
 enum NvmeIdCns {
-    NVME_ID_CNS_NS                = 0x00,
-    NVME_ID_CNS_CTRL              = 0x01,
-    NVME_ID_CNS_NS_ACTIVE_LIST    = 0x02,
-    NVME_ID_CNS_NS_DESCR_LIST     = 0x03,
-    NVME_ID_CNS_CS_NS             = 0x05,
-    NVME_ID_CNS_CS_CTRL           = 0x06,
-    NVME_ID_CNS_CS_NS_ACTIVE_LIST = 0x07,
-    NVME_ID_CNS_IO_COMMAND_SET    = 0x1c,
+    NVME_ID_CNS_NS                    = 0x00,
+    NVME_ID_CNS_CTRL                  = 0x01,
+    NVME_ID_CNS_NS_ACTIVE_LIST        = 0x02,
+    NVME_ID_CNS_NS_DESCR_LIST         = 0x03,
+    NVME_ID_CNS_CS_NS                 = 0x05,
+    NVME_ID_CNS_CS_CTRL               = 0x06,
+    NVME_ID_CNS_CS_NS_ACTIVE_LIST     = 0x07,
+    NVME_ID_CNS_NS_PRESENT_LIST       = 0x10,
+    NVME_ID_CNS_NS_PRESENT            = 0x11,
+    NVME_ID_CNS_CS_NS_PRESENT_LIST    = 0x1a,
+    NVME_ID_CNS_CS_NS_PRESENT         = 0x1b,
+    NVME_ID_CNS_IO_COMMAND_SET        = 0x1c,
 };
 
 typedef struct QEMU_PACKED NvmeIdCtrl {
diff --git a/hw/block/nvme.c b/hw/block/nvme.c
index 27679c8be816..f1cc66d381a1 100644
--- a/hw/block/nvme.c
+++ b/hw/block/nvme.c
@@ -2008,16 +2008,24 @@ static uint16_t nvme_identify(NvmeCtrl *n, NvmeRequest 
*req)
 
     switch (le32_to_cpu(c->cns)) {
     case NVME_ID_CNS_NS:
+         /* fall through */
+    case NVME_ID_CNS_NS_PRESENT:
         return nvme_identify_ns(n, req);
     case NVME_ID_CNS_CS_NS:
+         /* fall through */
+    case NVME_ID_CNS_CS_NS_PRESENT:
         return nvme_identify_ns_csi(n, req);
     case NVME_ID_CNS_CTRL:
         return nvme_identify_ctrl(n, req);
     case NVME_ID_CNS_CS_CTRL:
         return nvme_identify_ctrl_csi(n, req);
     case NVME_ID_CNS_NS_ACTIVE_LIST:
+         /* fall through */
+    case NVME_ID_CNS_NS_PRESENT_LIST:
         return nvme_identify_nslist(n, req);
     case NVME_ID_CNS_CS_NS_ACTIVE_LIST:
+         /* fall through */
+    case NVME_ID_CNS_CS_NS_PRESENT_LIST:
         return nvme_identify_nslist_csi(n, req);
     case NVME_ID_CNS_NS_DESCR_LIST:
         return nvme_identify_ns_descr_list(n, req);
-- 
2.30.0