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, "zone_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.holmb...@wdc.com> Signed-off-by: Dmitry Fomichev <dmitry.fomic...@wdc.com> Reviewed-by: Klaus Jensen <k.jen...@samsung.com> --- hw/block/nvme.c | 73 ++++++++++++++++++++++++++++++++++++++++++++++--- hw/block/nvme.h | 8 ++++++ 2 files changed, 77 insertions(+), 4 deletions(-) diff --git a/hw/block/nvme.c b/hw/block/nvme.c index 120b63cee4..f15f1d65dd 100644 --- a/hw/block/nvme.c +++ b/hw/block/nvme.c @@ -1355,6 +1355,26 @@ static bool nvme_cond_offline_all(uint8_t state) return state == NVME_ZONE_STATE_READ_ONLY; } +static uint16_t nvme_set_zd_ext(NvmeCtrl *n, NvmeNamespace *ns, + NvmeZone *zone, uint8_t state) +{ + uint16_t status; + + if (state == NVME_ZONE_STATE_EMPTY) { + nvme_auto_transition_zone(n, ns, false, true); + status = nvme_aor_check(n, ns, 1, 0); + if (status != NVME_SUCCESS) { + return status; + } + nvme_aor_inc_active(n, ns); + zone->d.za |= NVME_ZA_ZD_EXT_VALID; + nvme_assign_zone_state(n, ns, zone, NVME_ZONE_STATE_CLOSED); + return NVME_SUCCESS; + } + + return NVME_ZONE_INVAL_TRANSITION; +} + typedef uint16_t (*op_handler_t)(NvmeCtrl *, NvmeNamespace *, NvmeZone *, uint8_t); typedef bool (*need_to_proc_zone_t)(uint8_t); @@ -1389,12 +1409,14 @@ static uint16_t nvme_zone_mgmt_send(NvmeCtrl *n, NvmeRequest *req) NvmeCmd *cmd = (NvmeCmd *)&req->cmd; NvmeNamespace *ns = req->ns; uint32_t dw13 = le32_to_cpu(cmd->cdw13); + uint64_t prp1, prp2; uint64_t slba = 0; uint32_t zone_idx = 0; uint16_t status; uint8_t action, state; bool all; NvmeZone *zone; + uint8_t *zd_ext; action = dw13 & 0xff; all = dw13 & 0x100; @@ -1449,7 +1471,24 @@ 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 || !n->params.zd_extension_size) { + return NVME_INVALID_FIELD | NVME_DNR; + } + zd_ext = nvme_get_zd_extension(n, ns, zone_idx); + prp1 = le64_to_cpu(cmd->dptr.prp1); + prp2 = le64_to_cpu(cmd->dptr.prp2); + status = nvme_dma_prp(n, zd_ext, n->params.zd_extension_size, + prp1, prp2, DMA_DIRECTION_TO_DEVICE, req); + if (status) { + trace_pci_nvme_err_zd_extension_map_error(zone_idx); + return status; + } + + status = nvme_set_zd_ext(n, ns, zone, state); + if (status == NVME_SUCCESS) { + trace_pci_nvme_zd_extension_set(zone_idx); + return status; + } break; default: @@ -1529,7 +1568,7 @@ static uint16_t nvme_zone_mgmt_recv(NvmeCtrl *n, NvmeRequest *req) return NVME_INVALID_FIELD | NVME_DNR; } - if (zra == NVME_ZONE_REPORT_EXTENDED) { + if (zra == NVME_ZONE_REPORT_EXTENDED && !n->params.zd_extension_size) { return NVME_INVALID_FIELD | NVME_DNR; } @@ -1541,6 +1580,9 @@ 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 += n->params.zd_extension_size; + } max_zones = (len - sizeof(NvmeZoneReportHeader)) / zone_entry_sz; buf = g_malloc0(len); @@ -1572,6 +1614,14 @@ static uint16_t nvme_zone_mgmt_recv(NvmeCtrl *n, NvmeRequest *req) z->wp = cpu_to_le64(~0ULL); } + if (zra == NVME_ZONE_REPORT_EXTENDED) { + if (zs->d.za & NVME_ZA_ZD_EXT_VALID) { + memcpy(buf_p, nvme_get_zd_extension(n, ns, zone_idx), + n->params.zd_extension_size); + } + buf_p += n->params.zd_extension_size; + } + zone_idx++; } @@ -2686,7 +2736,6 @@ static uint16_t nvme_aer(NvmeCtrl *n, NvmeRequest *req) n->aer_reqs[n->outstanding_aers] = req; n->outstanding_aers++; - if (!QTAILQ_EMPTY(&n->aer_queue)) { nvme_process_aers(n); } @@ -3320,6 +3369,7 @@ static int nvme_init_zone_meta(NvmeCtrl *n, NvmeNamespace *ns, ns->imp_open_zones = g_malloc0(sizeof(NvmeZoneList)); ns->closed_zones = g_malloc0(sizeof(NvmeZoneList)); ns->full_zones = g_malloc0(sizeof(NvmeZoneList)); + ns->zd_extensions = g_malloc0(n->params.zd_extension_size * n->num_zones); zone = ns->zone_array; nvme_init_zone_list(ns->exp_open_zones); @@ -3390,6 +3440,17 @@ static void nvme_zoned_init_ctrl(NvmeCtrl *n, Error **errp) " adjusting", n->params.max_active_zones, nz); n->params.max_active_zones = nz; } + if (n->params.zd_extension_size) { + if (n->params.zd_extension_size & 0x3f) { + error_setg(errp, + "zone descriptor extension size must be a multiple of 64B"); + return; + } + if ((n->params.zd_extension_size >> 6) > 0xff) { + error_setg(errp, "zone descriptor extension size is too large"); + return; + } + } return; } @@ -3414,7 +3475,8 @@ static int nvme_zoned_init_ns(NvmeCtrl *n, NvmeNamespace *ns, int lba_index, ns->id_ns_zoned->ozcs = n->params.cross_zone_read ? 0x01 : 0x00; ns->id_ns_zoned->lbafe[lba_index].zsze = cpu_to_le64(n->zone_size); - ns->id_ns_zoned->lbafe[lba_index].zdes = 0; + ns->id_ns_zoned->lbafe[lba_index].zdes = + n->params.zd_extension_size >> 6; /* Units of 64B */ if (n->params.fill_pattern == 0) { ns->id_ns.dlfeat = 0x01; @@ -3437,6 +3499,7 @@ static void nvme_zoned_clear(NvmeCtrl *n) g_free(ns->imp_open_zones); g_free(ns->closed_zones); g_free(ns->full_zones); + g_free(ns->zd_extensions); } } @@ -3805,6 +3868,8 @@ static Property nvme_props[] = { NVME_DEFAULT_ZONE_SIZE), DEFINE_PROP_UINT64("zone_capacity", NvmeCtrl, params.zone_capacity_mb, 0), DEFINE_PROP_UINT32("zone_append_size_limit", NvmeCtrl, params.zasl_kb, 0), + DEFINE_PROP_UINT32("zone_descr_ext_size", NvmeCtrl, + params.zd_extension_size, 0), DEFINE_PROP_UINT32("max_active", NvmeCtrl, params.max_active_zones, 0), DEFINE_PROP_UINT32("max_open", NvmeCtrl, params.max_open_zones, 0), DEFINE_PROP_BOOL("cross_zone_read", NvmeCtrl, params.cross_zone_read, true), diff --git a/hw/block/nvme.h b/hw/block/nvme.h index 4a3b23ed72..e53388ba66 100644 --- a/hw/block/nvme.h +++ b/hw/block/nvme.h @@ -24,6 +24,7 @@ typedef struct NvmeParams { uint64_t zone_capacity_mb; uint32_t max_active_zones; uint32_t max_open_zones; + uint32_t zd_extension_size; } NvmeParams; typedef struct NvmeAsyncEvent { @@ -105,6 +106,7 @@ typedef struct NvmeNamespace { NvmeZoneList *imp_open_zones; NvmeZoneList *closed_zones; NvmeZoneList *full_zones; + uint8_t *zd_extensions; int32_t nr_open_zones; int32_t nr_active_zones; } NvmeNamespace; @@ -218,6 +220,12 @@ static inline bool nvme_wp_is_valid(NvmeZone *zone) st != NVME_ZONE_STATE_OFFLINE; } +static inline uint8_t *nvme_get_zd_extension(NvmeCtrl *n, NvmeNamespace *ns, + uint32_t zone_idx) +{ + return &ns->zd_extensions[zone_idx * n->params.zd_extension_size]; +} + /* * Initialize a zone list head. */ -- 2.21.0