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Mon, 8 Mar 2021 07:23:31 -0500 (EST) From: Klaus Jensen To: Peter Maydell , qemu-devel@nongnu.org Subject: [PULL 11/38] hw/block/nvme: add simple copy command Date: Mon, 8 Mar 2021 13:22:46 +0100 Message-Id: <20210308122313.286938-12-its@irrelevant.dk> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210308122313.286938-1-its@irrelevant.dk> References: <20210308122313.286938-1-its@irrelevant.dk> MIME-Version: 1.0 Received-SPF: pass client-ip=64.147.123.20; envelope-from=its@irrelevant.dk; helo=wout4-smtp.messagingengine.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Fam Zheng , Kevin Wolf , qemu-block@nongnu.org, Klaus Jensen , Max Reitz , Keith Busch , Stefan Hajnoczi , Klaus Jensen Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Klaus Jensen Add support for TP 4065a ("Simple Copy Command"), v2020.05.04 ("Ratified"). The implementation uses a bounce buffer to first read in the source logical blocks, then issue a write of that bounce buffer. The default maximum number of source logical blocks is 128, translating to 512 KiB for 4k logical blocks which aligns with the default value of MDTS. Signed-off-by: Klaus Jensen Reviewed-by: Keith Busch --- hw/block/nvme-ns.h | 4 + hw/block/nvme.h | 1 + hw/block/nvme-ns.c | 8 ++ hw/block/nvme.c | 252 +++++++++++++++++++++++++++++++++++++++++- hw/block/trace-events | 6 + 5 files changed, 270 insertions(+), 1 deletion(-) diff --git a/hw/block/nvme-ns.h b/hw/block/nvme-ns.h index 929e78861903..7af6884862b5 100644 --- a/hw/block/nvme-ns.h +++ b/hw/block/nvme-ns.h @@ -29,6 +29,10 @@ typedef struct NvmeNamespaceParams { uint32_t nsid; QemuUUID uuid; + uint16_t mssrl; + uint32_t mcl; + uint8_t msrc; + bool zoned; bool cross_zone_read; uint64_t zone_size_bs; diff --git a/hw/block/nvme.h b/hw/block/nvme.h index b8f5f2d6ffb8..cb2b5175f1a1 100644 --- a/hw/block/nvme.h +++ b/hw/block/nvme.h @@ -69,6 +69,7 @@ static inline const char *nvme_io_opc_str(uint8_t opc) case NVME_CMD_COMPARE: return "NVME_NVM_CMD_COMPARE"; case NVME_CMD_WRITE_ZEROES: return "NVME_NVM_CMD_WRITE_ZEROES"; case NVME_CMD_DSM: return "NVME_NVM_CMD_DSM"; + case NVME_CMD_COPY: return "NVME_NVM_CMD_COPY"; case NVME_CMD_ZONE_MGMT_SEND: return "NVME_ZONED_CMD_MGMT_SEND"; case NVME_CMD_ZONE_MGMT_RECV: return "NVME_ZONED_CMD_MGMT_RECV"; case NVME_CMD_ZONE_APPEND: return "NVME_ZONED_CMD_ZONE_APPEND"; diff --git a/hw/block/nvme-ns.c b/hw/block/nvme-ns.c index 64b6a491adc3..fd73d0321109 100644 --- a/hw/block/nvme-ns.c +++ b/hw/block/nvme-ns.c @@ -67,6 +67,11 @@ static int nvme_ns_init(NvmeNamespace *ns, Error **errp) id_ns->nmic |= NVME_NMIC_NS_SHARED; } + /* simple copy */ + id_ns->mssrl = cpu_to_le16(ns->params.mssrl); + id_ns->mcl = cpu_to_le32(ns->params.mcl); + id_ns->msrc = ns->params.msrc; + return 0; } @@ -384,6 +389,9 @@ static Property nvme_ns_props[] = { NvmeSubsystem *), DEFINE_PROP_UINT32("nsid", NvmeNamespace, params.nsid, 0), DEFINE_PROP_UUID("uuid", NvmeNamespace, params.uuid), + DEFINE_PROP_UINT16("mssrl", NvmeNamespace, params.mssrl, 128), + DEFINE_PROP_UINT32("mcl", NvmeNamespace, params.mcl, 128), + DEFINE_PROP_UINT8("msrc", NvmeNamespace, params.msrc, 127), DEFINE_PROP_BOOL("zoned", NvmeNamespace, params.zoned, false), DEFINE_PROP_SIZE("zoned.zone_size", NvmeNamespace, params.zone_size_bs, NVME_DEFAULT_ZONE_SIZE), diff --git a/hw/block/nvme.c b/hw/block/nvme.c index 4d6cd7755986..59faebce28f9 100644 --- a/hw/block/nvme.c +++ b/hw/block/nvme.c @@ -186,6 +186,7 @@ static const uint32_t nvme_cse_iocs_nvm[256] = { [NVME_CMD_WRITE] = NVME_CMD_EFF_CSUPP | NVME_CMD_EFF_LBCC, [NVME_CMD_READ] = NVME_CMD_EFF_CSUPP, [NVME_CMD_DSM] = NVME_CMD_EFF_CSUPP | NVME_CMD_EFF_LBCC, + [NVME_CMD_COPY] = NVME_CMD_EFF_CSUPP | NVME_CMD_EFF_LBCC, [NVME_CMD_COMPARE] = NVME_CMD_EFF_CSUPP, }; @@ -195,6 +196,7 @@ static const uint32_t nvme_cse_iocs_zoned[256] = { [NVME_CMD_WRITE] = NVME_CMD_EFF_CSUPP | NVME_CMD_EFF_LBCC, [NVME_CMD_READ] = NVME_CMD_EFF_CSUPP, [NVME_CMD_DSM] = NVME_CMD_EFF_CSUPP | NVME_CMD_EFF_LBCC, + [NVME_CMD_COPY] = NVME_CMD_EFF_CSUPP | NVME_CMD_EFF_LBCC, [NVME_CMD_COMPARE] = NVME_CMD_EFF_CSUPP, [NVME_CMD_ZONE_APPEND] = NVME_CMD_EFF_CSUPP | NVME_CMD_EFF_LBCC, [NVME_CMD_ZONE_MGMT_SEND] = NVME_CMD_EFF_CSUPP | NVME_CMD_EFF_LBCC, @@ -1523,6 +1525,136 @@ static void nvme_aio_zone_reset_cb(void *opaque, int ret) nvme_enqueue_req_completion(nvme_cq(req), req); } +struct nvme_copy_ctx { + int copies; + uint8_t *bounce; + uint32_t nlb; +}; + +struct nvme_copy_in_ctx { + NvmeRequest *req; + QEMUIOVector iov; +}; + +static void nvme_copy_cb(void *opaque, int ret) +{ + NvmeRequest *req = opaque; + NvmeNamespace *ns = req->ns; + struct nvme_copy_ctx *ctx = req->opaque; + + trace_pci_nvme_copy_cb(nvme_cid(req)); + + if (ns->params.zoned) { + NvmeCopyCmd *copy = (NvmeCopyCmd *)&req->cmd; + uint64_t sdlba = le64_to_cpu(copy->sdlba); + NvmeZone *zone = nvme_get_zone_by_slba(ns, sdlba); + + __nvme_advance_zone_wp(ns, zone, ctx->nlb); + } + + if (!ret) { + block_acct_done(blk_get_stats(ns->blkconf.blk), &req->acct); + } else { + block_acct_failed(blk_get_stats(ns->blkconf.blk), &req->acct); + nvme_aio_err(req, ret); + } + + g_free(ctx->bounce); + g_free(ctx); + + nvme_enqueue_req_completion(nvme_cq(req), req); +} + +static void nvme_copy_in_complete(NvmeRequest *req) +{ + NvmeNamespace *ns = req->ns; + NvmeCopyCmd *copy = (NvmeCopyCmd *)&req->cmd; + struct nvme_copy_ctx *ctx = req->opaque; + uint64_t sdlba = le64_to_cpu(copy->sdlba); + uint16_t status; + + trace_pci_nvme_copy_in_complete(nvme_cid(req)); + + block_acct_done(blk_get_stats(ns->blkconf.blk), &req->acct); + + status = nvme_check_bounds(ns, sdlba, ctx->nlb); + if (status) { + trace_pci_nvme_err_invalid_lba_range(sdlba, ctx->nlb, ns->id_ns.nsze); + goto invalid; + } + + if (ns->params.zoned) { + NvmeZone *zone = nvme_get_zone_by_slba(ns, sdlba); + + status = nvme_check_zone_write(ns, zone, sdlba, ctx->nlb); + if (status) { + goto invalid; + } + + status = nvme_zrm_auto(ns, zone); + if (status) { + goto invalid; + } + + zone->w_ptr += ctx->nlb; + } + + qemu_iovec_init(&req->iov, 1); + qemu_iovec_add(&req->iov, ctx->bounce, nvme_l2b(ns, ctx->nlb)); + + block_acct_start(blk_get_stats(ns->blkconf.blk), &req->acct, 0, + BLOCK_ACCT_WRITE); + + req->aiocb = blk_aio_pwritev(ns->blkconf.blk, nvme_l2b(ns, sdlba), + &req->iov, 0, nvme_copy_cb, req); + + return; + +invalid: + req->status = status; + + g_free(ctx->bounce); + g_free(ctx); + + nvme_enqueue_req_completion(nvme_cq(req), req); +} + +static void nvme_aio_copy_in_cb(void *opaque, int ret) +{ + struct nvme_copy_in_ctx *in_ctx = opaque; + NvmeRequest *req = in_ctx->req; + NvmeNamespace *ns = req->ns; + struct nvme_copy_ctx *ctx = req->opaque; + + qemu_iovec_destroy(&in_ctx->iov); + g_free(in_ctx); + + trace_pci_nvme_aio_copy_in_cb(nvme_cid(req)); + + if (ret) { + nvme_aio_err(req, ret); + } + + ctx->copies--; + + if (ctx->copies) { + return; + } + + if (req->status) { + block_acct_failed(blk_get_stats(ns->blkconf.blk), &req->acct); + + g_free(ctx->bounce); + g_free(ctx); + + nvme_enqueue_req_completion(nvme_cq(req), req); + + return; + } + + nvme_copy_in_complete(req); +} + struct nvme_compare_ctx { QEMUIOVector iov; uint8_t *bounce; @@ -1641,6 +1773,121 @@ static uint16_t nvme_dsm(NvmeCtrl *n, NvmeRequest *req) return status; } +static uint16_t nvme_copy(NvmeCtrl *n, NvmeRequest *req) +{ + NvmeNamespace *ns = req->ns; + NvmeCopyCmd *copy = (NvmeCopyCmd *)&req->cmd; + g_autofree NvmeCopySourceRange *range = NULL; + + uint16_t nr = copy->nr + 1; + uint8_t format = copy->control[0] & 0xf; + uint32_t nlb = 0; + + uint8_t *bounce = NULL, *bouncep = NULL; + struct nvme_copy_ctx *ctx; + uint16_t status; + int i; + + trace_pci_nvme_copy(nvme_cid(req), nvme_nsid(ns), nr, format); + + if (!(n->id_ctrl.ocfs & (1 << format))) { + trace_pci_nvme_err_copy_invalid_format(format); + return NVME_INVALID_FIELD | NVME_DNR; + } + + if (nr > ns->id_ns.msrc + 1) { + return NVME_CMD_SIZE_LIMIT | NVME_DNR; + } + + range = g_new(NvmeCopySourceRange, nr); + + status = nvme_dma(n, (uint8_t *)range, nr * sizeof(NvmeCopySourceRange), + DMA_DIRECTION_TO_DEVICE, req); + if (status) { + return status; + } + + for (i = 0; i < nr; i++) { + uint64_t slba = le64_to_cpu(range[i].slba); + uint32_t _nlb = le16_to_cpu(range[i].nlb) + 1; + + if (_nlb > le16_to_cpu(ns->id_ns.mssrl)) { + return NVME_CMD_SIZE_LIMIT | NVME_DNR; + } + + status = nvme_check_bounds(ns, slba, _nlb); + if (status) { + trace_pci_nvme_err_invalid_lba_range(slba, _nlb, ns->id_ns.nsze); + return status; + } + + if (NVME_ERR_REC_DULBE(ns->features.err_rec)) { + status = nvme_check_dulbe(ns, slba, _nlb); + if (status) { + return status; + } + } + + if (ns->params.zoned) { + status = nvme_check_zone_read(ns, slba, _nlb); + if (status) { + return status; + } + } + + nlb += _nlb; + } + + if (nlb > le32_to_cpu(ns->id_ns.mcl)) { + return NVME_CMD_SIZE_LIMIT | NVME_DNR; + } + + bounce = bouncep = g_malloc(nvme_l2b(ns, nlb)); + + block_acct_start(blk_get_stats(ns->blkconf.blk), &req->acct, 0, + BLOCK_ACCT_READ); + + ctx = g_new(struct nvme_copy_ctx, 1); + + ctx->bounce = bounce; + ctx->nlb = nlb; + ctx->copies = 1; + + req->opaque = ctx; + + for (i = 0; i < nr; i++) { + uint64_t slba = le64_to_cpu(range[i].slba); + uint32_t nlb = le16_to_cpu(range[i].nlb) + 1; + + size_t len = nvme_l2b(ns, nlb); + int64_t offset = nvme_l2b(ns, slba); + + trace_pci_nvme_copy_source_range(slba, nlb); + + struct nvme_copy_in_ctx *in_ctx = g_new(struct nvme_copy_in_ctx, 1); + in_ctx->req = req; + + qemu_iovec_init(&in_ctx->iov, 1); + qemu_iovec_add(&in_ctx->iov, bouncep, len); + + ctx->copies++; + + blk_aio_preadv(ns->blkconf.blk, offset, &in_ctx->iov, 0, + nvme_aio_copy_in_cb, in_ctx); + + bouncep += len; + } + + /* account for the 1-initialization */ + ctx->copies--; + + if (!ctx->copies) { + nvme_copy_in_complete(req); + } + + return NVME_NO_COMPLETE; +} + static uint16_t nvme_compare(NvmeCtrl *n, NvmeRequest *req) { NvmeRwCmd *rw = (NvmeRwCmd *)&req->cmd; @@ -2378,6 +2625,8 @@ static uint16_t nvme_io_cmd(NvmeCtrl *n, NvmeRequest *req) return nvme_compare(n, req); case NVME_CMD_DSM: return nvme_dsm(n, req); + case NVME_CMD_COPY: + return nvme_copy(n, req); case NVME_CMD_ZONE_MGMT_SEND: return nvme_zone_mgmt_send(n, req); case NVME_CMD_ZONE_MGMT_RECV: @@ -4475,9 +4724,10 @@ static void nvme_init_ctrl(NvmeCtrl *n, PCIDevice *pci_dev) id->nn = cpu_to_le32(n->num_namespaces); id->oncs = cpu_to_le16(NVME_ONCS_WRITE_ZEROES | NVME_ONCS_TIMESTAMP | NVME_ONCS_FEATURES | NVME_ONCS_DSM | - NVME_ONCS_COMPARE); + NVME_ONCS_COMPARE | NVME_ONCS_COPY); id->vwc = (0x2 << 1) | 0x1; + id->ocfs = cpu_to_le16(NVME_OCFS_COPY_FORMAT_0); id->sgls = cpu_to_le32(NVME_CTRL_SGLS_SUPPORT_NO_ALIGN | NVME_CTRL_SGLS_BITBUCKET); diff --git a/hw/block/trace-events b/hw/block/trace-events index d32475c3989e..4b5ee04024f4 100644 --- a/hw/block/trace-events +++ b/hw/block/trace-events @@ -43,12 +43,17 @@ pci_nvme_admin_cmd(uint16_t cid, uint16_t sqid, uint8_t opcode, const char *opna pci_nvme_read(uint16_t cid, uint32_t nsid, uint32_t nlb, uint64_t count, uint64_t lba) "cid %"PRIu16" nsid %"PRIu32" nlb %"PRIu32" count %"PRIu64" lba 0x%"PRIx64"" pci_nvme_write(uint16_t cid, const char *verb, uint32_t nsid, uint32_t nlb, uint64_t count, uint64_t lba) "cid %"PRIu16" opname '%s' nsid %"PRIu32" nlb %"PRIu32" count %"PRIu64" lba 0x%"PRIx64"" pci_nvme_rw_cb(uint16_t cid, const char *blkname) "cid %"PRIu16" blk '%s'" +pci_nvme_copy(uint16_t cid, uint32_t nsid, uint16_t nr, uint8_t format) "cid %"PRIu16" nsid %"PRIu32" nr %"PRIu16" format 0x%"PRIx8"" +pci_nvme_copy_source_range(uint64_t slba, uint32_t nlb) "slba 0x%"PRIx64" nlb %"PRIu32"" +pci_nvme_copy_in_complete(uint16_t cid) "cid %"PRIu16"" +pci_nvme_copy_cb(uint16_t cid) "cid %"PRIu16"" pci_nvme_block_status(int64_t offset, int64_t bytes, int64_t pnum, int ret, bool zeroed) "offset %"PRId64" bytes %"PRId64" pnum %"PRId64" ret 0x%x zeroed %d" pci_nvme_dsm(uint16_t cid, uint32_t nsid, uint32_t nr, uint32_t attr) "cid %"PRIu16" nsid %"PRIu32" nr %"PRIu32" attr 0x%"PRIx32"" pci_nvme_dsm_deallocate(uint16_t cid, uint32_t nsid, uint64_t slba, uint32_t nlb) "cid %"PRIu16" nsid %"PRIu32" slba %"PRIu64" nlb %"PRIu32"" pci_nvme_compare(uint16_t cid, uint32_t nsid, uint64_t slba, uint32_t nlb) "cid %"PRIu16" nsid %"PRIu32" slba 0x%"PRIx64" nlb %"PRIu32"" pci_nvme_compare_cb(uint16_t cid) "cid %"PRIu16"" pci_nvme_aio_discard_cb(uint16_t cid) "cid %"PRIu16"" +pci_nvme_aio_copy_in_cb(uint16_t cid) "cid %"PRIu16"" pci_nvme_aio_zone_reset_cb(uint16_t cid, uint64_t zslba) "cid %"PRIu16" zslba 0x%"PRIx64"" pci_nvme_create_sq(uint64_t addr, uint16_t sqid, uint16_t cqid, uint16_t qsize, uint16_t qflags) "create submission queue, addr=0x%"PRIx64", sqid=%"PRIu16", cqid=%"PRIu16", qsize=%"PRIu16", qflags=%"PRIu16"" pci_nvme_create_cq(uint64_t addr, uint16_t cqid, uint16_t vector, uint16_t size, uint16_t qflags, int ien) "create completion queue, addr=0x%"PRIx64", cqid=%"PRIu16", vector=%"PRIu16", qsize=%"PRIu16", qflags=%"PRIu16", ien=%d" @@ -113,6 +118,7 @@ pci_nvme_err_addr_read(uint64_t addr) "addr 0x%"PRIx64"" pci_nvme_err_addr_write(uint64_t addr) "addr 0x%"PRIx64"" pci_nvme_err_cfs(void) "controller fatal status" pci_nvme_err_aio(uint16_t cid, const char *errname, uint16_t status) "cid %"PRIu16" err '%s' status 0x%"PRIx16"" +pci_nvme_err_copy_invalid_format(uint8_t format) "format 0x%"PRIx8"" pci_nvme_err_invalid_sgld(uint16_t cid, uint8_t typ) "cid %"PRIu16" type 0x%"PRIx8"" pci_nvme_err_invalid_num_sgld(uint16_t cid, uint8_t typ) "cid %"PRIu16" type 0x%"PRIx8"" pci_nvme_err_invalid_sgl_excess_length(uint16_t cid) "cid %"PRIu16""