@@ -14,6 +14,12 @@ The nvme device (-device nvme) emulates an NVM Express Controller.
zns.zcap; if the zone capacity is a power of two, the zone size will be
set to that, otherwise it will default to the next power of two.
+ `zns.mar`; Specifies the number of active resources available. This is a 0s
+ based value.
+
+ `zns.mor`; Specifies the number of open resources available. This is a 0s
+ based value.
+
Reference Specifications
------------------------
@@ -28,6 +28,8 @@ typedef struct NvmeNamespaceParams {
uint64_t zcap;
uint64_t zsze;
uint8_t zdes;
+ uint32_t mar;
+ uint32_t mor;
} zns;
} NvmeNamespaceParams;
@@ -58,6 +60,11 @@ typedef struct NvmeNamespace {
NvmeZone *zones;
NvmeZoneDescriptor *zd;
uint8_t *zde;
+
+ struct {
+ uint32_t open;
+ uint32_t active;
+ } resources;
} zns;
} NvmeNamespace;
@@ -775,6 +775,8 @@ enum NvmeStatusCodes {
NVME_ZONE_IS_READ_ONLY = 0x01ba,
NVME_ZONE_IS_OFFLINE = 0x01bb,
NVME_ZONE_INVALID_WRITE = 0x01bc,
+ NVME_TOO_MANY_ACTIVE_ZONES = 0x01bd,
+ NVME_TOO_MANY_OPEN_ZONES = 0x01be,
NVME_INVALID_ZONE_STATE_TRANSITION = 0x01bf,
NVME_WRITE_FAULT = 0x0280,
NVME_UNRECOVERED_READ = 0x0281,
@@ -92,8 +92,8 @@ static void nvme_ns_init_zoned(NvmeNamespace *ns)
ns->zns.zde = g_malloc0_n(ns->zns.num_zones, nvme_ns_zdes_bytes(ns));
}
- id_ns_zns->mar = 0xffffffff;
- id_ns_zns->mor = 0xffffffff;
+ id_ns_zns->mar = cpu_to_le32(ns->params.zns.mar);
+ id_ns_zns->mor = cpu_to_le32(ns->params.zns.mor);
}
static void nvme_ns_init(NvmeNamespace *ns)
@@ -130,6 +130,11 @@ static void nvme_ns_init(NvmeNamespace *ns)
void nvme_ns_zns_init_zone_state(NvmeNamespace *ns)
{
+ ns->zns.resources.active = ns->params.zns.mar != 0xffffffff ?
+ ns->params.zns.mar + 1 : ns->zns.num_zones;
+ ns->zns.resources.open = ns->params.zns.mor != 0xffffffff ?
+ ns->params.zns.mor + 1 : ns->zns.num_zones;
+
for (int i = 0; i < ns->zns.num_zones; i++) {
NvmeZone *zone = &ns->zns.zones[i];
zone->zd = &ns->zns.zd[i];
@@ -148,9 +153,15 @@ void nvme_ns_zns_init_zone_state(NvmeNamespace *ns)
if (nvme_wp(zone) == nvme_zslba(zone) &&
!(zone->zd->za & NVME_ZA_ZDEV)) {
nvme_zs_set(zone, NVME_ZS_ZSE);
+ break;
}
- break;
+ if (ns->zns.resources.active) {
+ ns->zns.resources.active--;
+ break;
+ }
+
+ /* fallthrough */
case NVME_ZS_ZSIO:
case NVME_ZS_ZSEO:
@@ -207,6 +218,12 @@ static int nvme_ns_check_constraints(NvmeNamespace *ns, Error **errp)
return -1;
}
+ if (ns->params.zns.mor > ns->params.zns.mar) {
+ error_setg(errp, "maximum open resources (zns.mor) must be less "
+ "than or equal to maximum active resources (zns.mar)");
+ return -1;
+ }
+
break;
default:
@@ -272,6 +289,8 @@ static Property nvme_ns_props[] = {
DEFINE_PROP_UINT64("zns.zcap", NvmeNamespace, params.zns.zcap, 0),
DEFINE_PROP_UINT64("zns.zsze", NvmeNamespace, params.zns.zsze, 0),
DEFINE_PROP_UINT8("zns.zdes", NvmeNamespace, params.zns.zdes, 0),
+ DEFINE_PROP_UINT32("zns.mar", NvmeNamespace, params.zns.mar, 0xffffffff),
+ DEFINE_PROP_UINT32("zns.mor", NvmeNamespace, params.zns.mor, 0xffffffff),
DEFINE_PROP_END_OF_LIST(),
};
@@ -1119,6 +1119,40 @@ static uint16_t nvme_zrm_transition(NvmeNamespace *ns, NvmeZone *zone,
switch (from) {
case NVME_ZS_ZSE:
+ switch (to) {
+ case NVME_ZS_ZSF:
+ case NVME_ZS_ZSRO:
+ case NVME_ZS_ZSO:
+ break;
+
+ case NVME_ZS_ZSC:
+ if (!ns->zns.resources.active) {
+ return NVME_TOO_MANY_ACTIVE_ZONES;
+ }
+
+ ns->zns.resources.active--;
+
+ break;
+
+ case NVME_ZS_ZSIO:
+ case NVME_ZS_ZSEO:
+ if (!ns->zns.resources.active) {
+ return NVME_TOO_MANY_ACTIVE_ZONES;
+ }
+
+ if (!ns->zns.resources.open) {
+ return NVME_TOO_MANY_OPEN_ZONES;
+ }
+
+ ns->zns.resources.active--;
+ ns->zns.resources.open--;
+
+ break;
+
+ default:
+ return NVME_INVALID_ZONE_STATE_TRANSITION | NVME_DNR;
+ }
+
break;
case NVME_ZS_ZSIO:
@@ -1137,7 +1171,13 @@ static uint16_t nvme_zrm_transition(NvmeNamespace *ns, NvmeZone *zone,
case NVME_ZS_ZSEO:
case NVME_ZS_ZSF:
case NVME_ZS_ZSRO:
+ ns->zns.resources.active++;
+
+ /* fallthrough */
+
case NVME_ZS_ZSC:
+ ns->zns.resources.open++;
+
break;
default:
@@ -1160,8 +1200,18 @@ static uint16_t nvme_zrm_transition(NvmeNamespace *ns, NvmeZone *zone,
case NVME_ZS_ZSF:
case NVME_ZS_ZSRO:
+ ns->zns.resources.active++;
+
+ break;
+
case NVME_ZS_ZSIO:
case NVME_ZS_ZSEO:
+ if (!ns->zns.resources.open) {
+ return NVME_TOO_MANY_OPEN_ZONES;
+ }
+
+ ns->zns.resources.open--;
+
break;
default:
@@ -1492,7 +1542,7 @@ static uint16_t nvme_zone_mgmt_send_all(NvmeCtrl *n, NvmeRequest *req)
NvmeZoneManagementSendCmd *send = (NvmeZoneManagementSendCmd *) &req->cmd;
NvmeNamespace *ns = req->ns;
NvmeZone *zone;
- int *countp = NULL;
+ int count, *countp = NULL;
uint16_t status = NVME_SUCCESS;
trace_pci_nvme_zone_mgmt_send_all(nvme_cid(req), nvme_nsid(ns), send->zsa);
@@ -1541,6 +1591,20 @@ static uint16_t nvme_zone_mgmt_send_all(NvmeCtrl *n, NvmeRequest *req)
break;
case NVME_CMD_ZONE_MGMT_SEND_OPEN:
+ count = 0;
+
+ for (int i = 0; i < ns->zns.num_zones; i++) {
+ zone = &ns->zns.zones[i];
+
+ if (nvme_zs(zone) == NVME_ZS_ZSC) {
+ count++;
+ }
+ }
+
+ if (count > ns->zns.resources.open) {
+ return NVME_TOO_MANY_OPEN_ZONES;
+ }
+
for (int i = 0; i < ns->zns.num_zones; i++) {
zone = &ns->zns.zones[i];