diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/nvme/host/core.c | 1 | ||||
| -rw-r--r-- | drivers/nvme/target/admin-cmd.c | 95 |
2 files changed, 96 insertions, 0 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index e9aac07f4c26..426d4b90ecd7 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -5001,6 +5001,7 @@ static inline void _nvme_check_size(void) BUILD_BUG_ON(sizeof(struct nvme_id_ctrl_nvm) != NVME_IDENTIFY_DATA_SIZE); BUILD_BUG_ON(sizeof(struct nvme_lba_range_type) != 64); BUILD_BUG_ON(sizeof(struct nvme_smart_log) != 512); + BUILD_BUG_ON(sizeof(struct nvme_endurance_group_log) != 512); BUILD_BUG_ON(sizeof(struct nvme_dbbuf) != 64); BUILD_BUG_ON(sizeof(struct nvme_directive_cmd) != 64); BUILD_BUG_ON(sizeof(struct nvme_feat_host_behavior) != 512); diff --git a/drivers/nvme/target/admin-cmd.c b/drivers/nvme/target/admin-cmd.c index f832661a4913..366582f52200 100644 --- a/drivers/nvme/target/admin-cmd.c +++ b/drivers/nvme/target/admin-cmd.c @@ -88,6 +88,7 @@ static void nvmet_execute_get_supported_log_pages(struct nvmet_req *req) logs->lids[NVME_LOG_FW_SLOT] = cpu_to_le32(NVME_LIDS_LSUPP); logs->lids[NVME_LOG_CHANGED_NS] = cpu_to_le32(NVME_LIDS_LSUPP); logs->lids[NVME_LOG_CMD_EFFECTS] = cpu_to_le32(NVME_LIDS_LSUPP); + logs->lids[NVME_LOG_ENDURANCE_GROUP] = cpu_to_le32(NVME_LIDS_LSUPP); logs->lids[NVME_LOG_ANA] = cpu_to_le32(NVME_LIDS_LSUPP); logs->lids[NVME_LOG_FEATURES] = cpu_to_le32(NVME_LIDS_LSUPP); logs->lids[NVME_LOG_RESERVATION] = cpu_to_le32(NVME_LIDS_LSUPP); @@ -303,6 +304,49 @@ static u32 nvmet_format_ana_group(struct nvmet_req *req, u32 grpid, return struct_size(desc, nsids, count); } +static void nvmet_execute_get_log_page_endgrp(struct nvmet_req *req) +{ + u64 host_reads, host_writes, data_units_read, data_units_written; + struct nvme_endurance_group_log *log; + u16 status; + + /* + * The target driver emulates each endurance group as its own + * namespace, reusing the nsid as the endurance group identifier. + */ + req->cmd->common.nsid = cpu_to_le32(le16_to_cpu( + req->cmd->get_log_page.lsi)); + status = nvmet_req_find_ns(req); + if (status) + goto out; + + log = kzalloc(sizeof(*log), GFP_KERNEL); + if (!log) { + status = NVME_SC_INTERNAL; + goto out; + } + + if (!req->ns->bdev) + goto copy; + + host_reads = part_stat_read(req->ns->bdev, ios[READ]); + data_units_read = + DIV_ROUND_UP(part_stat_read(req->ns->bdev, sectors[READ]), 1000); + host_writes = part_stat_read(req->ns->bdev, ios[WRITE]); + data_units_written = + DIV_ROUND_UP(part_stat_read(req->ns->bdev, sectors[WRITE]), 1000); + + put_unaligned_le64(host_reads, &log->hrc[0]); + put_unaligned_le64(data_units_read, &log->dur[0]); + put_unaligned_le64(host_writes, &log->hwc[0]); + put_unaligned_le64(data_units_written, &log->duw[0]); +copy: + status = nvmet_copy_to_sgl(req, 0, log, sizeof(*log)); + kfree(log); +out: + nvmet_req_complete(req, status); +} + static void nvmet_execute_get_log_page_ana(struct nvmet_req *req) { struct nvme_ana_rsp_hdr hdr = { 0, }; @@ -401,6 +445,8 @@ static void nvmet_execute_get_log_page(struct nvmet_req *req) return nvmet_execute_get_log_changed_ns(req); case NVME_LOG_CMD_EFFECTS: return nvmet_execute_get_log_cmd_effects_ns(req); + case NVME_LOG_ENDURANCE_GROUP: + return nvmet_execute_get_log_page_endgrp(req); case NVME_LOG_ANA: return nvmet_execute_get_log_page_ana(req); case NVME_LOG_FEATURES: @@ -535,6 +581,13 @@ static void nvmet_execute_identify_ctrl(struct nvmet_req *req) id->msdbd = ctrl->ops->msdbd; + /* + * Endurance group identifier is 16 bits, so we can't let namespaces + * overflow that since we reuse the nsid + */ + BUILD_BUG_ON(NVMET_MAX_NAMESPACES > USHRT_MAX); + id->endgidmax = cpu_to_le16(NVMET_MAX_NAMESPACES); + id->anacap = (1 << 0) | (1 << 1) | (1 << 2) | (1 << 3) | (1 << 4); id->anatt = 10; /* random value */ id->anagrpmax = cpu_to_le32(NVMET_MAX_ANAGRPS); @@ -628,6 +681,12 @@ static void nvmet_execute_identify_ns(struct nvmet_req *req) NVME_PR_SUPPORT_EXCLUSIVE_ACCESS_ALL_REGS | NVME_PR_SUPPORT_IEKEY_VER_1_3_DEF; + /* + * Since we don't know any better, every namespace is its own endurance + * group. + */ + id->endgid = cpu_to_le16(req->ns->nsid); + memcpy(&id->nguid, &req->ns->nguid, sizeof(id->nguid)); id->lbaf[0].ds = req->ns->blksize_shift; @@ -653,6 +712,39 @@ out: nvmet_req_complete(req, status); } +static void nvmet_execute_identify_endgrp_list(struct nvmet_req *req) +{ + u16 min_endgid = le16_to_cpu(req->cmd->identify.cnssid); + static const int buf_size = NVME_IDENTIFY_DATA_SIZE; + struct nvmet_ctrl *ctrl = req->sq->ctrl; + struct nvmet_ns *ns; + unsigned long idx; + __le16 *list; + u16 status; + int i = 1; + + list = kzalloc(buf_size, GFP_KERNEL); + if (!list) { + status = NVME_SC_INTERNAL; + goto out; + } + + xa_for_each(&ctrl->subsys->namespaces, idx, ns) { + if (ns->nsid <= min_endgid) + continue; + + list[i++] = cpu_to_le16(ns->nsid); + if (i == buf_size / sizeof(__le16)) + break; + } + + list[0] = cpu_to_le16(i - 1); + status = nvmet_copy_to_sgl(req, 0, list, buf_size); + kfree(list); +out: + nvmet_req_complete(req, status); +} + static void nvmet_execute_identify_nslist(struct nvmet_req *req, bool match_css) { static const int buf_size = NVME_IDENTIFY_DATA_SIZE; @@ -825,6 +917,9 @@ static void nvmet_execute_identify(struct nvmet_req *req) case NVME_ID_CNS_NS_ACTIVE_LIST_CS: nvmet_execute_identify_nslist(req, true); return; + case NVME_ID_CNS_ENDGRP_LIST: + nvmet_execute_identify_endgrp_list(req); + return; } pr_debug("unhandled identify cns %d on qid %d\n", |