hw/block/nvme: add missing mor/mar constraint checks

Firstly, if zoned.max_active is non-zero, zoned.max_open must be less
than or equal to zoned.max_active.

Secondly, if only zones.max_active is set, we have to explicitly set
zones.max_open or we end up with an invalid MAR/MOR configuration. This
is an artifact of the parameters not being zeroes-based like in the
spec.

Cc: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Reported-by: Gollu Appalanaidu <anaidu.gollu@samsung.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
Reviewed-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>

diff --git a/hw/block/nvme-ns.c b/hw/block/nvme-ns.c
index fd73d03..0e87600 100644 (file)
--- a/hw/block/nvme-ns.c
+++ b/hw/block/nvme-ns.c
@@ -163,6 +163,18 @@ static int nvme_ns_zoned_check_calc_geometry(NvmeNamespace *ns, Error **errp)
         return -1;
     }
 
+    if (ns->params.max_active_zones) {
+        if (ns->params.max_open_zones > ns->params.max_active_zones) {
+            error_setg(errp, "max_open_zones (%u) exceeds max_active_zones (%u)",
+                       ns->params.max_open_zones, ns->params.max_active_zones);
+            return -1;
+        }
+
+        if (!ns->params.max_open_zones) {
+            ns->params.max_open_zones = ns->params.max_active_zones;
+        }
+    }
+
     if (ns->params.zd_extension_size) {
         if (ns->params.zd_extension_size & 0x3f) {
             error_setg(errp,