hw/nvme: default for namespace EUI-64

On machines with version > 6.0 replace a missing EUI-64 by a generated
value.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Klaus Jensen <k.jensen@samsung.com>

2 files changed, 11 insertions, 0 deletions

diff --git a/hw/nvme/ns.c b/hw/nvme/ns.c
index 45e457d..4275c3d 100644
--- a/hw/nvme/ns.c
+++ b/hw/nvme/ns.c
@@ -56,6 +56,7 @@ void nvme_ns_init_format(NvmeNamespace *ns)
 
 static int nvme_ns_init(NvmeNamespace *ns, Error **errp)
 {
+    static uint64_t ns_count;
     NvmeIdNs *id_ns = &ns->id_ns;
     uint8_t ds;
     uint16_t ms;
@@ -73,6 +74,12 @@ static int nvme_ns_init(NvmeNamespace *ns, Error **errp)
         id_ns->nmic |= NVME_NMIC_NS_SHARED;
     }
 
+    /* Substitute a missing EUI-64 by an autogenerated one */
+    ++ns_count;
+    if (!ns->params.eui64 && ns->params.eui64_default) {
+        ns->params.eui64 = ns_count + NVME_EUI64_DEFAULT;
+    }
+
     /* simple copy */
     id_ns->mssrl = cpu_to_le16(ns->params.mssrl);
     id_ns->mcl = cpu_to_le32(ns->params.mcl);
@@ -533,6 +540,8 @@ static Property nvme_ns_props[] = {
                        params.max_open_zones, 0),
     DEFINE_PROP_UINT32("zoned.descr_ext_size", NvmeNamespace,
                        params.zd_extension_size, 0),
+    DEFINE_PROP_BOOL("eui64-default", NvmeNamespace, params.eui64_default,
+                     true),
     DEFINE_PROP_END_OF_LIST(),
 };
 
diff --git a/hw/nvme/nvme.h b/hw/nvme/nvme.h
index ac90e13..371ac9b 100644
--- a/hw/nvme/nvme.h
+++ b/hw/nvme/nvme.h
@@ -26,6 +26,7 @@
 
 #define NVME_MAX_CONTROLLERS 32
 #define NVME_MAX_NAMESPACES  256
+#define NVME_EUI64_DEFAULT ((uint64_t)0x5254000000000000)
 
 typedef struct NvmeCtrl NvmeCtrl;
 typedef struct NvmeNamespace NvmeNamespace;
@@ -84,6 +85,7 @@ typedef struct NvmeNamespaceParams {
     uint32_t nsid;
     QemuUUID uuid;
     uint64_t eui64;
+    bool     eui64_default;
 
     uint16_t ms;
     uint8_t  mset;