This patch supports namespace management : create and delete operations. This patch has been tested with the following command and size of image file for unallocated namespaces is taken as 0GB. ns_create will look into the list of unallocated namespaces and it will initialize the same and return the nsid of the same. A new mandatory field has been added called tnvmcap and we have ensured that the total capacity of namespace created does not exceed tnvmcap
-device nvme-subsys,id=subsys0,tnvmcap=8 -device nvme,serial=foo,id=nvme0,subsys=subsys0 -device nvme,serial=bar,id=nvme1,subsys=subsys0 -drive id=ns1,file=ns1.img,if=none -device nvme-ns,drive=ns1,bus=nvme0,nsid=1,zoned=false,shared=true -drive id=ns2,file=ns2.img,if=none -device nvme-ns,drive=ns2,bus=nvme0,nsid=2,zoned=false,shared=true -drive id=ns3,file=ns3.img,if=none -device nvme-ns,drive=ns3,bus=nvme0,nsid=3,zoned=false,shared=true -drive id=ns4,file=ns4.img,if=none -device nvme-ns,drive=ns4,bus=nvme0,nsid=4,zoned=false,shared=true Please review and suggest if any changes are required. Signed-off-by: Naveen Nagar <naveen...@samsung.com> Reviewed-by: Klaus Jensen <k.jen...@samsung.com> Reviewed-by: Padmakar Kalghatgi <p.kalgha...@samsung.com> Reviewed-by: Gollu Appalanaidu <anaidu.go...@samsung.com> Reviewed-by: Jaegyu Choi <jg123.c...@samsung.com> --- hw/nvme/ctrl.c | 250 +++++++++++++++++++++++++++++++++++++++++-- hw/nvme/ns.c | 14 ++- hw/nvme/nvme.h | 6 +- hw/nvme/subsys.c | 3 + include/block/nvme.h | 18 +++- 5 files changed, 272 insertions(+), 19 deletions(-) diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c index 6baf9e0420..4be23a3092 100644 --- a/hw/nvme/ctrl.c +++ b/hw/nvme/ctrl.c @@ -219,6 +219,7 @@ static const uint32_t nvme_cse_acs[256] = { [NVME_ADM_CMD_SET_FEATURES] = NVME_CMD_EFF_CSUPP, [NVME_ADM_CMD_GET_FEATURES] = NVME_CMD_EFF_CSUPP, [NVME_ADM_CMD_ASYNC_EV_REQ] = NVME_CMD_EFF_CSUPP, + [NVME_ADM_CMD_NS_MANAGEMENT] = NVME_CMD_EFF_CSUPP | NVME_CMD_EFF_NIC, [NVME_ADM_CMD_NS_ATTACHMENT] = NVME_CMD_EFF_CSUPP | NVME_CMD_EFF_NIC, [NVME_ADM_CMD_FORMAT_NVM] = NVME_CMD_EFF_CSUPP | NVME_CMD_EFF_LBCC, }; @@ -4445,6 +4446,30 @@ static uint16_t nvme_identify_ctrl_csi(NvmeCtrl *n, NvmeRequest *req) return nvme_c2h(n, id, sizeof(id), req); } +static uint16_t nvme_identify_ns_common(NvmeCtrl *n, NvmeRequest *req) +{ + NvmeIdNs id_ns = {}; + + id_ns.nsfeat |= (0x4 | 0x10); + id_ns.dpc = 0x1f; + + NvmeLBAF lbaf[16] = { + [0] = {.ds = 9}, + [1] = {.ds = 9, .ms = 8}, + [2] = {.ds = 9, .ms = 16}, + [3] = {.ds = 9, .ms = 64}, + [4] = {.ds = 12}, + [5] = {.ds = 12, .ms = 8}, + [6] = {.ds = 12, .ms = 16}, + [7] = {.ds = 12, .ms = 64}, + }; + + memcpy(&id_ns.lbaf, &lbaf, sizeof(lbaf)); + id_ns.nlbaf = 7; + + return nvme_c2h(n, (uint8_t *)&id_ns, sizeof(NvmeIdNs), req); +} + static uint16_t nvme_identify_ns(NvmeCtrl *n, NvmeRequest *req, bool active) { NvmeNamespace *ns; @@ -4453,8 +4478,10 @@ static uint16_t nvme_identify_ns(NvmeCtrl *n, NvmeRequest *req, bool active) trace_pci_nvme_identify_ns(nsid); - if (!nvme_nsid_valid(n, nsid) || nsid == NVME_NSID_BROADCAST) { + if (!nvme_nsid_valid(n, nsid)) { return NVME_INVALID_NSID | NVME_DNR; + } else if (nsid == NVME_NSID_BROADCAST) { + return nvme_identify_ns_common(n, req); } ns = nvme_ns(n, nsid); @@ -5184,6 +5211,195 @@ static void nvme_select_iocs_ns(NvmeCtrl *n, NvmeNamespace *ns) } } +static int nvme_blk_truncate(BlockBackend *blk, size_t len, Error **errp) +{ + int ret; + uint64_t perm, shared_perm; + + blk_get_perm(blk, &perm, &shared_perm); + + ret = blk_set_perm(blk, perm | BLK_PERM_RESIZE, shared_perm, errp); + if (ret < 0) { + return ret; + } + + ret = blk_truncate(blk, len, false, PREALLOC_MODE_OFF, 0, errp); + if (ret < 0) { + return ret; + } + + ret = blk_set_perm(blk, perm, shared_perm, errp); + if (ret < 0) { + return ret; + } + + return 0; +} + +static uint32_t nvme_allocate_nsid(NvmeCtrl *n) +{ + uint32_t nsid = 0; + for (int i = 1; i <= NVME_MAX_NAMESPACES; i++) { + if (nvme_ns(n, i) || nvme_subsys_ns(n->subsys, i)) { + continue; + } + + nsid = i; + return nsid; + } + return nsid; +} + +static uint16_t nvme_namespace_create(NvmeCtrl *n, NvmeRequest *req) +{ + uint32_t ret; + NvmeIdNs id_ns_host; + NvmeSubsystem *subsys = n->subsys; + Error *err = NULL; + uint8_t flbas_host; + uint64_t ns_size; + int lba_index; + NvmeNamespace *ns; + NvmeCtrl *ctrl; + NvmeIdNs *id_ns; + + ret = nvme_h2c(n, (uint8_t *)&id_ns_host, sizeof(id_ns_host), req); + if (ret) { + return ret; + } + + if (id_ns_host.ncap < id_ns_host.nsze) { + return NVME_THIN_PROVISION_NO_SUPP | NVME_DNR; + } else if (id_ns_host.ncap > id_ns_host.nsze) { + return NVME_INVALID_FIELD | NVME_DNR; + } + + if (!id_ns_host.nsze) { + return NVME_INVALID_FIELD | NVME_DNR; + } + + if (QSLIST_EMPTY(&subsys->unallocated_namespaces)) { + return NVME_NS_ID_UNAVAILABLE; + } + + ns = QSLIST_FIRST(&subsys->unallocated_namespaces); + id_ns = &ns->id_ns; + flbas_host = (id_ns_host.flbas) & (0xF); + + if (flbas_host > id_ns->nlbaf) { + return NVME_INVALID_FORMAT | NVME_DNR; + } + + ret = nvme_ns_setup(ns, &err); + if (ret) { + return ret; + } + + id_ns->flbas = id_ns_host.flbas; + id_ns->dps = id_ns_host.dps; + id_ns->nmic = id_ns_host.nmic; + + lba_index = NVME_ID_NS_FLBAS_INDEX(id_ns->flbas); + ns_size = id_ns_host.nsze * ((1 << id_ns->lbaf[lba_index].ds) + + (id_ns->lbaf[lba_index].ms)); + id_ns->nvmcap = ns_size; + + if (ns_size > n->id_ctrl.unvmcap) { + return NVME_NS_INSUFF_CAP; + } + + ret = nvme_blk_truncate(ns->blkconf.blk, id_ns->nvmcap, &err); + if (ret) { + return ret; + } + + ns->size = blk_getlength(ns->blkconf.blk); + nvme_ns_init_format(ns); + + ns->params.nsid = nvme_allocate_nsid(n); + if (!ns->params.nsid) { + return NVME_NS_ID_UNAVAILABLE; + } + subsys->namespaces[ns->params.nsid] = ns; + + for (int cntlid = 0; cntlid < ARRAY_SIZE(n->subsys->ctrls); cntlid++) { + ctrl = nvme_subsys_ctrl(n->subsys, cntlid); + if (ctrl) { + ctrl->id_ctrl.unvmcap -= le64_to_cpu(ns->size); + } + } + + stl_le_p(&req->cqe.result, ns->params.nsid); + QSLIST_REMOVE_HEAD(&subsys->unallocated_namespaces, entry); + return NVME_SUCCESS; +} + +static void nvme_namespace_delete(NvmeCtrl *n, NvmeNamespace *ns, uint32_t nsid) +{ + NvmeCtrl *ctrl; + NvmeSubsystem *subsys = n->subsys; + + subsys->namespaces[nsid] = NULL; + QSLIST_INSERT_HEAD(&subsys->unallocated_namespaces, ns, entry); + + for (int cntlid = 0; cntlid < ARRAY_SIZE(n->subsys->ctrls); cntlid++) { + ctrl = nvme_subsys_ctrl(n->subsys, cntlid); + if (ctrl) { + ctrl->id_ctrl.unvmcap += le64_to_cpu(ns->size); + if (nvme_ns(ctrl, nsid)) { + nvme_detach_ns(ctrl, ns, nsid); + } + nvme_ns_attr_changed_aer(ctrl, nsid); + } + } +} + +static uint16_t nvme_ns_management(NvmeCtrl *n, NvmeRequest *req) +{ + uint32_t dw10 = le32_to_cpu(req->cmd.cdw10); + uint8_t sel = dw10 & 0x7; + uint32_t nsid = le32_to_cpu(req->cmd.nsid); + NvmeNamespace *ns; + + if (!n->subsys) { + return NVME_INVALID_FIELD | NVME_DNR; + } + + switch (sel) { + case NVME_NS_MANAGEMENT_CREATE: + if (nsid) { + return NVME_INVALID_FIELD | NVME_DNR; + } + return nvme_namespace_create(n, req); + case NVME_NS_MANAGEMENT_DELETE: + if (nsid != NVME_NSID_BROADCAST && !nvme_nsid_valid(n, nsid)) { + return NVME_INVALID_NSID | NVME_DNR; + } + if (nsid == NVME_NSID_BROADCAST) { + uint32_t i; + + for (i = 1; i <= NVME_MAX_NAMESPACES; i++) { + ns = nvme_subsys_ns(n->subsys, i); + if (!ns) { + continue; + } + nvme_namespace_delete(n, ns, i); + } + return NVME_SUCCESS; + } else { + ns = nvme_subsys_ns(n->subsys, nsid); + if (!ns) { + return NVME_INVALID_FIELD | NVME_DNR; + } + nvme_namespace_delete(n, ns, nsid); + return NVME_SUCCESS; + } + + default: + return NVME_INVALID_FIELD | NVME_DNR; + } +} + static uint16_t nvme_ns_attachment(NvmeCtrl *n, NvmeRequest *req) { NvmeNamespace *ns; @@ -5239,22 +5455,14 @@ static uint16_t nvme_ns_attachment(NvmeCtrl *n, NvmeRequest *req) if (!nvme_ns(ctrl, nsid)) { return NVME_NS_NOT_ATTACHED | NVME_DNR; } - - ctrl->namespaces[nsid] = NULL; - ns->attached--; - - nvme_update_dmrsl(ctrl); + nvme_detach_ns(ctrl, ns, nsid); } /* * Add namespace id to the changed namespace id list for event clearing * via Get Log Page command. */ - if (!test_and_set_bit(nsid, ctrl->changed_nsids)) { - nvme_enqueue_event(ctrl, NVME_AER_TYPE_NOTICE, - NVME_AER_INFO_NOTICE_NS_ATTR_CHANGED, - NVME_LOG_CHANGED_NSLIST); - } + nvme_ns_attr_changed_aer(ctrl, nsid); } return NVME_SUCCESS; @@ -5487,6 +5695,8 @@ static uint16_t nvme_admin_cmd(NvmeCtrl *n, NvmeRequest *req) return nvme_get_feature(n, req); case NVME_ADM_CMD_ASYNC_EV_REQ: return nvme_aer(n, req); + case NVME_ADM_CMD_NS_MANAGEMENT: + return nvme_ns_management(n, req); case NVME_ADM_CMD_NS_ATTACHMENT: return nvme_ns_attachment(n, req); case NVME_ADM_CMD_FORMAT_NVM: @@ -6471,6 +6681,8 @@ static void nvme_init_ctrl(NvmeCtrl *n, PCIDevice *pci_dev) if (n->subsys) { id->cmic |= NVME_CMIC_MULTI_CTRL; + id->tnvmcap = n->subsys->params.tnvmcap * GiB; + id->unvmcap = n->subsys->params.tnvmcap * GiB; } NVME_CAP_SET_MQES(cap, 0x7ff); @@ -6518,6 +6730,22 @@ void nvme_attach_ns(NvmeCtrl *n, NvmeNamespace *ns) BDRV_REQUEST_MAX_BYTES / nvme_l2b(ns, 1)); } +void nvme_detach_ns(NvmeCtrl *n, NvmeNamespace *ns, uint32_t nsid) +{ + n->namespaces[nsid] = NULL; + ns->attached--; + nvme_update_dmrsl(n); +} + +void nvme_ns_attr_changed_aer(NvmeCtrl *n, uint32_t nsid) +{ + if (!test_and_set_bit(nsid, n->changed_nsids)) { + nvme_enqueue_event(n, NVME_AER_TYPE_NOTICE, + NVME_AER_INFO_NOTICE_NS_ATTR_CHANGED, + NVME_LOG_CHANGED_NSLIST); + } +} + static void nvme_realize(PCIDevice *pci_dev, Error **errp) { NvmeCtrl *n = NVME(pci_dev); diff --git a/hw/nvme/ns.c b/hw/nvme/ns.c index b7cf1494e7..c2b8c82024 100644 --- a/hw/nvme/ns.c +++ b/hw/nvme/ns.c @@ -402,10 +402,6 @@ int nvme_ns_setup(NvmeNamespace *ns, Error **errp) return -1; } - if (nvme_ns_init_blk(ns, errp)) { - return -1; - } - if (nvme_ns_init(ns, errp)) { return -1; } @@ -481,6 +477,15 @@ static void nvme_ns_realize(DeviceState *dev, Error **errp) } } + if (nvme_ns_init_blk(ns, errp)) { + return; + } + + if (!ns->size) { + QSLIST_INSERT_HEAD(&subsys->unallocated_namespaces, ns, entry); + return; + } + if (nvme_ns_setup(ns, errp)) { return; } @@ -519,6 +524,7 @@ static void nvme_ns_realize(DeviceState *dev, Error **errp) if (ctrl) { nvme_attach_ns(ctrl, ns); + ctrl->id_ctrl.unvmcap -= le64_to_cpu(ns->size); } } diff --git a/hw/nvme/nvme.h b/hw/nvme/nvme.h index 83ffabade4..e1e4ab8a01 100644 --- a/hw/nvme/nvme.h +++ b/hw/nvme/nvme.h @@ -51,9 +51,11 @@ typedef struct NvmeSubsystem { NvmeCtrl *ctrls[NVME_MAX_CONTROLLERS]; NvmeNamespace *namespaces[NVME_MAX_NAMESPACES + 1]; + QSLIST_HEAD(, NvmeNamespace) unallocated_namespaces; struct { char *nqn; + uint64_t tnvmcap; } params; } NvmeSubsystem; @@ -130,7 +132,7 @@ typedef struct NvmeNamespace { uint16_t status; int attached; - QTAILQ_ENTRY(NvmeNamespace) entry; + QSLIST_ENTRY(NvmeNamespace) entry; NvmeIdNsZoned *id_ns_zoned; NvmeZone *zone_array; @@ -495,6 +497,8 @@ static inline uint16_t nvme_cid(NvmeRequest *req) } void nvme_attach_ns(NvmeCtrl *n, NvmeNamespace *ns); +void nvme_detach_ns(NvmeCtrl *n, NvmeNamespace *ns, uint32_t nsid); +void nvme_ns_attr_changed_aer(NvmeCtrl *n, uint32_t nsid); uint16_t nvme_bounce_data(NvmeCtrl *n, uint8_t *ptr, uint32_t len, NvmeTxDirection dir, NvmeRequest *req); uint16_t nvme_bounce_mdata(NvmeCtrl *n, uint8_t *ptr, uint32_t len, diff --git a/hw/nvme/subsys.c b/hw/nvme/subsys.c index 93c35950d6..e30bfbca81 100644 --- a/hw/nvme/subsys.c +++ b/hw/nvme/subsys.c @@ -53,11 +53,14 @@ static void nvme_subsys_realize(DeviceState *dev, Error **errp) qbus_create_inplace(&subsys->bus, sizeof(NvmeBus), TYPE_NVME_BUS, dev, dev->id); + QSLIST_INIT(&subsys->unallocated_namespaces); + nvme_subsys_setup(subsys); } static Property nvme_subsystem_props[] = { DEFINE_PROP_STRING("nqn", NvmeSubsystem, params.nqn), + DEFINE_PROP_SIZE("tnvmcap", NvmeSubsystem, params.tnvmcap, 0), DEFINE_PROP_END_OF_LIST(), }; diff --git a/include/block/nvme.h b/include/block/nvme.h index 77aae01174..8a8ca6753b 100644 --- a/include/block/nvme.h +++ b/include/block/nvme.h @@ -592,6 +592,7 @@ enum NvmeAdminCommands { NVME_ADM_CMD_SET_FEATURES = 0x09, NVME_ADM_CMD_GET_FEATURES = 0x0a, NVME_ADM_CMD_ASYNC_EV_REQ = 0x0c, + NVME_ADM_CMD_NS_MANAGEMENT = 0x0d, NVME_ADM_CMD_ACTIVATE_FW = 0x10, NVME_ADM_CMD_DOWNLOAD_FW = 0x11, NVME_ADM_CMD_NS_ATTACHMENT = 0x15, @@ -882,6 +883,9 @@ enum NvmeStatusCodes { NVME_FEAT_NOT_CHANGEABLE = 0x010e, NVME_FEAT_NOT_NS_SPEC = 0x010f, NVME_FW_REQ_SUSYSTEM_RESET = 0x0110, + NVME_NS_INSUFF_CAP = 0x0115, + NVME_THIN_PROVISION_NO_SUPP = 0x011b, + NVME_NS_ID_UNAVAILABLE = 0x0116, NVME_NS_ALREADY_ATTACHED = 0x0118, NVME_NS_PRIVATE = 0x0119, NVME_NS_NOT_ATTACHED = 0x011a, @@ -1056,8 +1060,10 @@ typedef struct QEMU_PACKED NvmeIdCtrl { uint16_t mtfa; uint32_t hmpre; uint32_t hmmin; - uint8_t tnvmcap[16]; - uint8_t unvmcap[16]; + uint64_t tnvmcap; + uint64_t tnvmcap_u; + uint64_t unvmcap; + uint64_t unvmcap_u; uint32_t rpmbs; uint16_t edstt; uint8_t dsto; @@ -1154,6 +1160,11 @@ enum NvmeIdCtrlCmic { NVME_CMIC_MULTI_CTRL = 1 << 1, }; +enum NvmeNsManagementOperation { + NVME_NS_MANAGEMENT_CREATE = 0x0, + NVME_NS_MANAGEMENT_DELETE = 0x1, +}; + #define NVME_CTRL_SQES_MIN(sqes) ((sqes) & 0xf) #define NVME_CTRL_SQES_MAX(sqes) (((sqes) >> 4) & 0xf) #define NVME_CTRL_CQES_MIN(cqes) ((cqes) & 0xf) @@ -1285,7 +1296,8 @@ typedef struct QEMU_PACKED NvmeIdNs { uint16_t nabo; uint16_t nabspf; uint16_t noiob; - uint8_t nvmcap[16]; + uint64_t nvmcap; + uint64_t nvmcap_u; uint16_t npwg; uint16_t npwa; uint16_t npdg; -- 2.17.1