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hw/block/nvme: Support Zone Descriptor Extensions

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Zone Descriptor Extension is a label that can be assigned to a zone.
It can be set to an Empty zone and it stays assigned until the zone
is reset.

This commit adds a new optional module property,
"zoned.descr_ext_size". Its value must be a multiple of 64 bytes.
If this value is non-zero, it becomes possible to assign extensions
of that size to any Empty zones. The default value for this property
is 0, therefore setting extensions is disabled by default.

Signed-off-by: Hans Holmberg <hans.holmberg@wdc.com>
Signed-off-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Reviewed-by: Niklas Cassel <Niklas.Cassel@wdc.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
This commit is contained in:
Dmitry Fomichev 2020-12-09 05:04:08 +09:00 committed by Klaus Jensen
parent 8d18ddcd22
commit 1a9290ade3
4 changed files with 84 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
hw/block/nvme-ns.c
View File

@ -150,6 +150,18 @@ static int nvme_ns_zoned_check_calc_geometry(NvmeNamespace *ns, Error **errp)
return -1;
}
if (ns->params.zd_extension_size) {
if (ns->params.zd_extension_size & 0x3f) {
error_setg(errp,
"zone descriptor extension size must be a multiple of 64B");
return -1;
}
if ((ns->params.zd_extension_size >> 6) > 0xff) {
error_setg(errp, "zone descriptor extension size is too large");
return -1;
}
}
return 0;
}
@ -161,6 +173,10 @@ static void nvme_ns_zoned_init_state(NvmeNamespace *ns)
int i;
ns->zone_array = g_new0(NvmeZone, ns->num_zones);
if (ns->params.zd_extension_size) {
ns->zd_extensions = g_malloc0(ns->params.zd_extension_size *
ns->num_zones);
}
QTAILQ_INIT(&ns->exp_open_zones);
QTAILQ_INIT(&ns->imp_open_zones);
@ -203,7 +219,8 @@ static void nvme_ns_init_zoned(NvmeCtrl *n, NvmeNamespace *ns, int lba_index)
id_ns_z->ozcs = ns->params.cross_zone_read ? 0x01 : 0x00;
id_ns_z->lbafe[lba_index].zsze = cpu_to_le64(ns->zone_size);
id_ns_z->lbafe[lba_index].zdes = 0;
id_ns_z->lbafe[lba_index].zdes =
ns->params.zd_extension_size >> 6; /* Units of 64B */
ns->csi = NVME_CSI_ZONED;
ns->id_ns.nsze = cpu_to_le64(ns->num_zones * ns->zone_size);
@ -219,7 +236,8 @@ static void nvme_clear_zone(NvmeNamespace *ns, NvmeZone *zone)
zone->w_ptr = zone->d.wp;
state = nvme_get_zone_state(zone);
if (zone->d.wp != zone->d.zslba) {
if (zone->d.wp != zone->d.zslba ||
(zone->d.za & NVME_ZA_ZD_EXT_VALID)) {
if (state != NVME_ZONE_STATE_CLOSED) {
trace_pci_nvme_clear_ns_close(state, zone->d.zslba);
nvme_set_zone_state(zone, NVME_ZONE_STATE_CLOSED);
@ -315,6 +333,7 @@ void nvme_ns_cleanup(NvmeNamespace *ns)
if (ns->params.zoned) {
g_free(ns->id_ns_zoned);
g_free(ns->zone_array);
g_free(ns->zd_extensions);
}
}
@ -347,6 +366,8 @@ static Property nvme_ns_props[] = {
params.max_active_zones, 0),
DEFINE_PROP_UINT32("zoned.max_open", NvmeNamespace,
params.max_open_zones, 0),
DEFINE_PROP_UINT32("zoned.descr_ext_size", NvmeNamespace,
params.zd_extension_size, 0),
DEFINE_PROP_END_OF_LIST(),
};

8
hw/block/nvme-ns.h
View File

@ -35,6 +35,7 @@ typedef struct NvmeNamespaceParams {
uint64_t zone_cap_bs;
uint32_t max_active_zones;
uint32_t max_open_zones;
uint32_t zd_extension_size;
} NvmeNamespaceParams;
typedef struct NvmeNamespace {
@ -56,6 +57,7 @@ typedef struct NvmeNamespace {
uint64_t zone_size;
uint64_t zone_capacity;
uint32_t zone_size_log2;
uint8_t *zd_extensions;
int32_t nr_open_zones;
int32_t nr_active_zones;
@ -129,6 +131,12 @@ static inline bool nvme_wp_is_valid(NvmeZone *zone)
st != NVME_ZONE_STATE_OFFLINE;
}
static inline uint8_t *nvme_get_zd_extension(NvmeNamespace *ns,
uint32_t zone_idx)
{
return &ns->zd_extensions[zone_idx * ns->params.zd_extension_size];
}
static inline void nvme_aor_inc_open(NvmeNamespace *ns)
{
assert(ns->nr_open_zones >= 0);

53
hw/block/nvme.c
View File

@ -1823,6 +1823,25 @@ static uint16_t nvme_offline_zone(NvmeNamespace *ns, NvmeZone *zone,
}
}
static uint16_t nvme_set_zd_ext(NvmeNamespace *ns, NvmeZone *zone)
{
uint16_t status;
uint8_t state = nvme_get_zone_state(zone);
if (state == NVME_ZONE_STATE_EMPTY) {
status = nvme_aor_check(ns, 1, 0);
if (status != NVME_SUCCESS) {
return status;
}
nvme_aor_inc_active(ns);
zone->d.za |= NVME_ZA_ZD_EXT_VALID;
nvme_assign_zone_state(ns, zone, NVME_ZONE_STATE_CLOSED);
return NVME_SUCCESS;
}
return NVME_ZONE_INVAL_TRANSITION;
}
static uint16_t nvme_bulk_proc_zone(NvmeNamespace *ns, NvmeZone *zone,
enum NvmeZoneProcessingMask proc_mask,
op_handler_t op_hndlr)
@ -1921,6 +1940,7 @@ static uint16_t nvme_zone_mgmt_send(NvmeCtrl *n, NvmeRequest *req)
NvmeCmd *cmd = (NvmeCmd *)&req->cmd;
NvmeNamespace *ns = req->ns;
NvmeZone *zone;
uint8_t *zd_ext;
uint32_t dw13 = le32_to_cpu(cmd->cdw13);
uint64_t slba = 0;
uint32_t zone_idx = 0;
@ -1993,7 +2013,22 @@ static uint16_t nvme_zone_mgmt_send(NvmeCtrl *n, NvmeRequest *req)
case NVME_ZONE_ACTION_SET_ZD_EXT:
trace_pci_nvme_set_descriptor_extension(slba, zone_idx);
return NVME_INVALID_FIELD | NVME_DNR;
if (all || !ns->params.zd_extension_size) {
return NVME_INVALID_FIELD | NVME_DNR;
}
zd_ext = nvme_get_zd_extension(ns, zone_idx);
status = nvme_dma(n, zd_ext, ns->params.zd_extension_size,
DMA_DIRECTION_TO_DEVICE, req);
if (status) {
trace_pci_nvme_err_zd_extension_map_error(zone_idx);
return status;
}
status = nvme_set_zd_ext(ns, zone);
if (status == NVME_SUCCESS) {
trace_pci_nvme_zd_extension_set(zone_idx);
return status;
}
break;
default:
@ -2063,7 +2098,10 @@ static uint16_t nvme_zone_mgmt_recv(NvmeCtrl *n, NvmeRequest *req)
}
zra = dw13 & 0xff;
if (zra != NVME_ZONE_REPORT) {
if (zra != NVME_ZONE_REPORT && zra != NVME_ZONE_REPORT_EXTENDED) {
return NVME_INVALID_FIELD | NVME_DNR;
}
if (zra == NVME_ZONE_REPORT_EXTENDED && !ns->params.zd_extension_size) {
return NVME_INVALID_FIELD | NVME_DNR;
}
@ -2085,6 +2123,9 @@ static uint16_t nvme_zone_mgmt_recv(NvmeCtrl *n, NvmeRequest *req)
partial = (dw13 >> 16) & 0x01;
zone_entry_sz = sizeof(NvmeZoneDescr);
if (zra == NVME_ZONE_REPORT_EXTENDED) {
zone_entry_sz += ns->params.zd_extension_size;
}
max_zones = (data_size - sizeof(NvmeZoneReportHeader)) / zone_entry_sz;
buf = g_malloc0(data_size);
@ -2120,6 +2161,14 @@ static uint16_t nvme_zone_mgmt_recv(NvmeCtrl *n, NvmeRequest *req)
z->wp = cpu_to_le64(~0ULL);
}
if (zra == NVME_ZONE_REPORT_EXTENDED) {
if (zone->d.za & NVME_ZA_ZD_EXT_VALID) {
memcpy(buf_p, nvme_get_zd_extension(ns, zone_idx),
ns->params.zd_extension_size);
}
buf_p += ns->params.zd_extension_size;
}
max_zones--;
}
}

2
hw/block/trace-events
View File

@ -101,6 +101,7 @@ pci_nvme_finish_zone(uint64_t slba, uint32_t zone_idx, int all) "finish zone, sl
pci_nvme_reset_zone(uint64_t slba, uint32_t zone_idx, int all) "reset zone, slba=%"PRIu64", idx=%"PRIu32", all=%"PRIi32""
pci_nvme_offline_zone(uint64_t slba, uint32_t zone_idx, int all) "offline zone, slba=%"PRIu64", idx=%"PRIu32", all=%"PRIi32""
pci_nvme_set_descriptor_extension(uint64_t slba, uint32_t zone_idx) "set zone descriptor extension, slba=%"PRIu64", idx=%"PRIu32""
pci_nvme_zd_extension_set(uint32_t zone_idx) "set descriptor extension for zone_idx=%"PRIu32""
pci_nvme_clear_ns_close(uint32_t state, uint64_t slba) "zone state=%"PRIu32", slba=%"PRIu64" transitioned to Closed state"
pci_nvme_clear_ns_reset(uint32_t state, uint64_t slba) "zone state=%"PRIu32", slba=%"PRIu64" transitioned to Empty state"
@ -130,6 +131,7 @@ pci_nvme_err_zone_read_not_ok(uint64_t slba, uint32_t nlb, uint16_t status) "slb
pci_nvme_err_append_too_large(uint64_t slba, uint32_t nlb, uint8_t zasl) "slba=%"PRIu64", nlb=%"PRIu32", zasl=%"PRIu8""
pci_nvme_err_insuff_active_res(uint32_t max_active) "max_active=%"PRIu32" zone limit exceeded"
pci_nvme_err_insuff_open_res(uint32_t max_open) "max_open=%"PRIu32" zone limit exceeded"
pci_nvme_err_zd_extension_map_error(uint32_t zone_idx) "can't map descriptor extension for zone_idx=%"PRIu32""
pci_nvme_err_invalid_iocsci(uint32_t idx) "unsupported command set combination index %"PRIu32""
pci_nvme_err_invalid_del_sq(uint16_t qid) "invalid submission queue deletion, sid=%"PRIu16""
pci_nvme_err_invalid_create_sq_cqid(uint16_t cqid) "failed creating submission queue, invalid cqid=%"PRIu16""