hw/nvme: add placement handle list ranges

Allow the placement handles to be specified as ranges, i.e.
`fdp.ruhs=1:3-5` will attempt to assign ruh 1, 3, 4 and 5 to the
namespace.

Reviewed-by: Jesper Wendel Devantier <j.devantier@samsung.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>

1 files changed, 32 insertions, 8 deletions

diff --git a/hw/nvme/ns.c b/hw/nvme/ns.c
index c4ea203..44aba8f 100644
--- a/hw/nvme/ns.c
+++ b/hw/nvme/ns.c
@@ -400,8 +400,9 @@ static bool nvme_ns_init_fdp(NvmeNamespace *ns, Error **errp)
     NvmeRuHandle *ruh;
     uint8_t lbafi = NVME_ID_NS_FLBAS_INDEX(ns->id_ns.flbas);
     g_autofree unsigned int *ruhids = NULL;
-    unsigned int *ruhid;
-    char *r, *p, *token;
+    unsigned int n, m, *ruhid;
+    const char *endptr, *token;
+    char *r, *p;
     uint16_t *ph;
 
     if (!ns->params.fdp.ruhs) {
@@ -438,16 +439,39 @@ static bool nvme_ns_init_fdp(NvmeNamespace *ns, Error **errp)
 
     /* parse the placement handle identifiers */
     while ((token = qemu_strsep(&p, ";")) != NULL) {
-        if (ns->fdp.nphs++ == endgrp->fdp.nruh) {
-            error_setg(errp, "too many placement handles");
+        if (qemu_strtoui(token, &endptr, 0, &n) < 0) {
+            error_setg(errp, "cannot parse reclaim unit handle identifier");
             free(r);
             return false;
         }
 
-        if (qemu_strtoui(token, NULL, 0, ruhid++) < 0) {
-            error_setg(errp, "cannot parse reclaim unit handle identifier");
-            free(r);
-            return false;
+        m = n;
+
+        /* parse range */
+        if (*endptr == '-') {
+            token = endptr + 1;
+
+            if (qemu_strtoui(token, NULL, 0, &m) < 0) {
+                error_setg(errp, "cannot parse reclaim unit handle identifier");
+                free(r);
+                return false;
+            }
+
+            if (m < n) {
+                error_setg(errp, "invalid reclaim unit handle identifier range");
+                free(r);
+                return false;
+            }
+        }
+
+        for (; n <= m; n++) {
+            if (ns->fdp.nphs++ == endgrp->fdp.nruh) {
+                error_setg(errp, "too many placement handles");
+                free(r);
+                return false;
+            }
+
+            *ruhid++ = n;
         }
     }