From patchwork Wed Apr 15 05:51:37 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Klaus Jensen X-Patchwork-Id: 284322 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6C216C2BA2B for ; Wed, 15 Apr 2020 06:13:53 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2F4B420737 for ; Wed, 15 Apr 2020 06:13:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2F4B420737 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=irrelevant.dk Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:43896 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jObJ2-0006wa-7Z for qemu-devel@archiver.kernel.org; Wed, 15 Apr 2020 02:13:52 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:35994) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jOazR-0003hf-8C for qemu-devel@nongnu.org; Wed, 15 Apr 2020 01:53:42 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jOazN-00038y-MI for qemu-devel@nongnu.org; Wed, 15 Apr 2020 01:53:37 -0400 Received: from charlie.dont.surf ([128.199.63.193]:47600) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1jOazF-0002lV-WB; Wed, 15 Apr 2020 01:53:26 -0400 Received: from apples.local (80-167-98-190-cable.dk.customer.tdc.net [80.167.98.190]) by charlie.dont.surf (Postfix) with ESMTPSA id BF629BFE0E; Wed, 15 Apr 2020 05:52:34 +0000 (UTC) From: Klaus Jensen To: qemu-block@nongnu.org Subject: [PATCH v7 45/48] nvme: support multiple namespaces Date: Wed, 15 Apr 2020 07:51:37 +0200 Message-Id: <20200415055140.466900-46-its@irrelevant.dk> X-Mailer: git-send-email 2.26.0 In-Reply-To: <20200415055140.466900-1-its@irrelevant.dk> References: <20200415055140.466900-1-its@irrelevant.dk> MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 128.199.63.193 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: Kevin Wolf , Beata Michalska , Klaus Jensen , qemu-devel@nongnu.org, Max Reitz , Klaus Jensen , Keith Busch , Javier Gonzalez , Maxim Levitsky Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Klaus Jensen This adds support for multiple namespaces by introducing a new 'nvme-ns' device model. The nvme device creates a bus named from the device name ('id'). The nvme-ns devices then connect to this and registers themselves with the nvme device. This changes how an nvme device is created. Example with two namespaces: -drive file=nvme0n1.img,if=none,id=disk1 -drive file=nvme0n2.img,if=none,id=disk2 -device nvme,serial=deadbeef,id=nvme0 -device nvme-ns,drive=disk1,bus=nvme0,nsid=1 -device nvme-ns,drive=disk2,bus=nvme0,nsid=2 The drive property is kept on the nvme device to keep the change backward compatible, but the property is now optional. Specifying a drive for the nvme device will always create the namespace with nsid 1. Signed-off-by: Klaus Jensen Signed-off-by: Klaus Jensen Reviewed-by: Keith Busch --- hw/block/Makefile.objs | 2 +- hw/block/nvme-ns.c | 157 +++++++++++++++++++++++++++ hw/block/nvme-ns.h | 60 +++++++++++ hw/block/nvme.c | 233 +++++++++++++++++++++++++++-------------- hw/block/nvme.h | 47 ++++----- hw/block/trace-events | 8 +- 6 files changed, 396 insertions(+), 111 deletions(-) create mode 100644 hw/block/nvme-ns.c create mode 100644 hw/block/nvme-ns.h diff --git a/hw/block/Makefile.objs b/hw/block/Makefile.objs index 4b4a2b338dc4..d9141d6a4b9b 100644 --- a/hw/block/Makefile.objs +++ b/hw/block/Makefile.objs @@ -7,7 +7,7 @@ common-obj-$(CONFIG_PFLASH_CFI02) += pflash_cfi02.o common-obj-$(CONFIG_XEN) += xen-block.o common-obj-$(CONFIG_ECC) += ecc.o common-obj-$(CONFIG_ONENAND) += onenand.o -common-obj-$(CONFIG_NVME_PCI) += nvme.o +common-obj-$(CONFIG_NVME_PCI) += nvme.o nvme-ns.o common-obj-$(CONFIG_SWIM) += swim.o common-obj-$(CONFIG_SH4) += tc58128.o diff --git a/hw/block/nvme-ns.c b/hw/block/nvme-ns.c new file mode 100644 index 000000000000..bd64d4a94632 --- /dev/null +++ b/hw/block/nvme-ns.c @@ -0,0 +1,157 @@ +#include "qemu/osdep.h" +#include "qemu/units.h" +#include "qemu/cutils.h" +#include "qemu/log.h" +#include "hw/block/block.h" +#include "hw/pci/pci.h" +#include "sysemu/sysemu.h" +#include "sysemu/block-backend.h" +#include "qapi/error.h" + +#include "hw/qdev-properties.h" +#include "hw/qdev-core.h" + +#include "nvme.h" +#include "nvme-ns.h" + +static int nvme_ns_init(NvmeNamespace *ns) +{ + NvmeIdNs *id_ns = &ns->id_ns; + + id_ns->lbaf[0].ds = BDRV_SECTOR_BITS; + id_ns->nsze = cpu_to_le64(nvme_ns_nlbas(ns)); + + /* no thin provisioning */ + id_ns->ncap = id_ns->nsze; + id_ns->nuse = id_ns->ncap; + + return 0; +} + +static int nvme_ns_init_blk(NvmeCtrl *n, NvmeNamespace *ns, NvmeIdCtrl *id, + Error **errp) +{ + uint64_t perm, shared_perm; + + Error *local_err = NULL; + int ret; + + perm = BLK_PERM_CONSISTENT_READ | BLK_PERM_WRITE; + shared_perm = BLK_PERM_CONSISTENT_READ | BLK_PERM_WRITE_UNCHANGED | + BLK_PERM_GRAPH_MOD; + + ret = blk_set_perm(ns->blk, perm, shared_perm, &local_err); + if (ret) { + error_propagate_prepend(errp, local_err, + "could not set block permissions: "); + return ret; + } + + ns->size = blk_getlength(ns->blk); + if (ns->size < 0) { + error_setg_errno(errp, -ns->size, "could not get blockdev size"); + return -1; + } + + switch (n->conf.wce) { + case ON_OFF_AUTO_ON: + n->features.volatile_wc = 1; + break; + case ON_OFF_AUTO_OFF: + n->features.volatile_wc = 0; + case ON_OFF_AUTO_AUTO: + n->features.volatile_wc = blk_enable_write_cache(ns->blk); + break; + default: + abort(); + } + + blk_set_enable_write_cache(ns->blk, n->features.volatile_wc); + + return 0; +} + +static int nvme_ns_check_constraints(NvmeNamespace *ns, Error **errp) +{ + if (!ns->blk) { + error_setg(errp, "block backend not configured"); + return -1; + } + + return 0; +} + +int nvme_ns_setup(NvmeCtrl *n, NvmeNamespace *ns, Error **errp) +{ + if (nvme_ns_check_constraints(ns, errp)) { + return -1; + } + + if (nvme_ns_init_blk(n, ns, &n->id_ctrl, errp)) { + return -1; + } + + nvme_ns_init(ns); + if (nvme_register_namespace(n, ns, errp)) { + return -1; + } + + return 0; +} + +static void nvme_ns_realize(DeviceState *dev, Error **errp) +{ + NvmeNamespace *ns = NVME_NS(dev); + BusState *s = qdev_get_parent_bus(dev); + NvmeCtrl *n = NVME(s->parent); + Error *local_err = NULL; + + if (nvme_ns_setup(n, ns, &local_err)) { + error_propagate_prepend(errp, local_err, + "could not setup namespace: "); + return; + } +} + +static Property nvme_ns_props[] = { + DEFINE_NVME_NS_PROPERTIES(NvmeNamespace, params), + DEFINE_PROP_END_OF_LIST(), +}; + +static void nvme_ns_class_init(ObjectClass *oc, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(oc); + + set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); + + dc->bus_type = TYPE_NVME_BUS; + dc->realize = nvme_ns_realize; + device_class_set_props(dc, nvme_ns_props); + dc->desc = "virtual nvme namespace"; +} + +static void nvme_ns_instance_init(Object *obj) +{ + NvmeNamespace *ns = NVME_NS(obj); + char *bootindex = g_strdup_printf("/namespace@%d,0", ns->params.nsid); + + device_add_bootindex_property(obj, &ns->bootindex, "bootindex", + bootindex, DEVICE(obj), &error_abort); + + g_free(bootindex); +} + +static const TypeInfo nvme_ns_info = { + .name = TYPE_NVME_NS, + .parent = TYPE_DEVICE, + .class_init = nvme_ns_class_init, + .instance_size = sizeof(NvmeNamespace), + .instance_init = nvme_ns_instance_init, +}; + +static void nvme_ns_register_types(void) +{ + type_register_static(&nvme_ns_info); +} + +type_init(nvme_ns_register_types) diff --git a/hw/block/nvme-ns.h b/hw/block/nvme-ns.h new file mode 100644 index 000000000000..3c3651d485d0 --- /dev/null +++ b/hw/block/nvme-ns.h @@ -0,0 +1,60 @@ +#ifndef NVME_NS_H +#define NVME_NS_H + +#define TYPE_NVME_NS "nvme-ns" +#define NVME_NS(obj) \ + OBJECT_CHECK(NvmeNamespace, (obj), TYPE_NVME_NS) + +#define DEFINE_NVME_NS_PROPERTIES(_state, _props) \ + DEFINE_PROP_DRIVE("drive", _state, blk), \ + DEFINE_PROP_UINT32("nsid", _state, _props.nsid, 0) + +typedef struct NvmeNamespaceParams { + uint32_t nsid; +} NvmeNamespaceParams; + +typedef struct NvmeNamespace { + DeviceState parent_obj; + BlockBackend *blk; + int32_t bootindex; + int64_t size; + + NvmeIdNs id_ns; + NvmeNamespaceParams params; +} NvmeNamespace; + +static inline uint32_t nvme_nsid(NvmeNamespace *ns) +{ + if (ns) { + return ns->params.nsid; + } + + return -1; +} + +static inline NvmeLBAF *nvme_ns_lbaf(NvmeNamespace *ns) +{ + NvmeIdNs *id_ns = &ns->id_ns; + return &id_ns->lbaf[NVME_ID_NS_FLBAS_INDEX(id_ns->flbas)]; +} + +static inline uint8_t nvme_ns_lbads(NvmeNamespace *ns) +{ + return nvme_ns_lbaf(ns)->ds; +} + +static inline size_t nvme_ns_lbads_bytes(NvmeNamespace *ns) +{ + return 1 << nvme_ns_lbads(ns); +} + +static inline uint64_t nvme_ns_nlbas(NvmeNamespace *ns) +{ + return ns->size >> nvme_ns_lbads(ns); +} + +typedef struct NvmeCtrl NvmeCtrl; + +int nvme_ns_setup(NvmeCtrl *n, NvmeNamespace *ns, Error **errp); + +#endif /* NVME_NS_H */ diff --git a/hw/block/nvme.c b/hw/block/nvme.c index 05a6fa334a70..e338d0893a70 100644 --- a/hw/block/nvme.c +++ b/hw/block/nvme.c @@ -17,10 +17,11 @@ /** * Usage: add options: * -drive file=,if=none,id= - * -device nvme,drive=,serial=,id=, \ + * -device nvme,serial=,id=, \ * cmb_size_mb=, \ * max_ioqpairs=, \ * mdts= + * -device nvme-ns,drive=,bus=bus_name,nsid=1 * * Note cmb_size_mb denotes size of CMB in MB. CMB is assumed to be at * offset 0 in BAR2 and supports only WDS, RDS and SQS for now. @@ -44,6 +45,7 @@ #include "qemu/cutils.h" #include "trace.h" #include "nvme.h" +#include "nvme-ns.h" #define NVME_SPEC_VER 0x00010300 #define NVME_CMB_BIR 2 @@ -89,6 +91,11 @@ static int nvme_addr_read(NvmeCtrl *n, hwaddr addr, void *buf, int size) return pci_dma_read(&n->parent_obj, addr, buf, size); } +static uint16_t nvme_nsid_valid(NvmeCtrl *n, uint32_t nsid) +{ + return nsid && nsid <= n->num_namespaces; +} + static int nvme_check_sqid(NvmeCtrl *n, uint16_t sqid) { return sqid < n->params.max_ioqpairs + 1 && n->sq[sqid] != NULL ? 0 : -1; @@ -949,11 +956,12 @@ static uint16_t nvme_check_rw(NvmeCtrl *n, NvmeRequest *req) static void nvme_rw_cb(NvmeRequest *req, void *opaque) { + NvmeNamespace *ns = req->ns; NvmeSQueue *sq = req->sq; NvmeCtrl *n = sq->ctrl; NvmeCQueue *cq = n->cq[sq->cqid]; - trace_nvme_dev_rw_cb(nvme_cid(req)); + trace_nvme_dev_rw_cb(nvme_cid(req), nvme_nsid(ns)); nvme_enqueue_req_completion(cq, req); } @@ -1036,10 +1044,11 @@ static void nvme_aio_cb(void *opaque, int ret) static uint16_t nvme_flush(NvmeCtrl *n, NvmeRequest *req) { + NvmeNamespace *ns = req->ns; NvmeAIO *aio = g_new0(NvmeAIO, 1); *aio = (NvmeAIO) { - .blk = n->conf.blk, + .blk = ns->blk, .req = req, }; @@ -1063,11 +1072,12 @@ static uint16_t nvme_write_zeroes(NvmeCtrl *n, NvmeRequest *req) req->slba = le64_to_cpu(rw->slba); req->nlb = le16_to_cpu(rw->nlb) + 1; - trace_nvme_dev_write_zeroes(nvme_cid(req), req->slba, req->nlb); + trace_nvme_dev_write_zeroes(nvme_cid(req), nvme_nsid(ns), req->slba, + req->nlb); status = nvme_check_bounds(n, req->slba, req->nlb, req); if (status) { - return status; + goto invalid; } offset = req->slba << nvme_ns_lbads(ns); @@ -1076,7 +1086,7 @@ static uint16_t nvme_write_zeroes(NvmeCtrl *n, NvmeRequest *req) aio = g_new0(NvmeAIO, 1); *aio = (NvmeAIO) { - .blk = n->conf.blk, + .blk = ns->blk, .offset = offset, .len = count, .req = req, @@ -1086,6 +1096,10 @@ static uint16_t nvme_write_zeroes(NvmeCtrl *n, NvmeRequest *req) nvme_submit_aio(aio); return NVME_NO_COMPLETE; + +invalid: + block_acct_invalid(blk_get_stats(ns->blk), BLOCK_ACCT_WRITE); + return status; } static uint16_t nvme_rw(NvmeCtrl *n, NvmeRequest *req) @@ -1100,11 +1114,11 @@ static uint16_t nvme_rw(NvmeCtrl *n, NvmeRequest *req) req->nlb = le16_to_cpu(rw->nlb) + 1; req->slba = le64_to_cpu(rw->slba); - len = req->nlb << nvme_ns_lbads(ns); - trace_nvme_dev_rw(nvme_req_is_write(req) ? "write" : "read", req->nlb, - req->nlb << nvme_ns_lbads(req->ns), req->slba); + trace_nvme_dev_rw(nvme_cid(req), nvme_req_is_write(req) ? "write" : "read", + nvme_nsid(ns), req->nlb, req->nlb << nvme_ns_lbads(ns), + req->slba); status = nvme_check_rw(n, req); if (status) { @@ -1116,13 +1130,13 @@ static uint16_t nvme_rw(NvmeCtrl *n, NvmeRequest *req) goto invalid; } - nvme_rw_aio(n->conf.blk, req->slba << nvme_ns_lbads(ns), req); + nvme_rw_aio(ns->blk, req->slba << nvme_ns_lbads(ns), req); nvme_req_set_cb(req, nvme_rw_cb, NULL); return NVME_NO_COMPLETE; invalid: - block_acct_invalid(blk_get_stats(n->conf.blk), acct); + block_acct_invalid(blk_get_stats(ns->blk), acct); return status; } @@ -1133,12 +1147,15 @@ static uint16_t nvme_io_cmd(NvmeCtrl *n, NvmeRequest *req) trace_nvme_dev_io_cmd(nvme_cid(req), nsid, le16_to_cpu(req->sq->sqid), req->cmd.opcode); - if (unlikely(nsid == 0 || nsid > n->num_namespaces)) { - trace_nvme_dev_err_invalid_ns(nsid, n->num_namespaces); + if (!nvme_nsid_valid(n, nsid)) { return NVME_INVALID_NSID | NVME_DNR; } - req->ns = &n->namespaces[nsid - 1]; + req->ns = nvme_ns(n, nsid); + if (unlikely(!req->ns)) { + return NVME_INVALID_FIELD | NVME_DNR; + } + switch (req->cmd.opcode) { case NVME_CMD_FLUSH: return nvme_flush(n, req); @@ -1283,18 +1300,24 @@ static uint16_t nvme_smart_info(NvmeCtrl *n, uint8_t rae, uint32_t buf_len, uint64_t units_read = 0, units_written = 0; uint64_t read_commands = 0, write_commands = 0; NvmeSmartLog smart; - BlockAcctStats *s; if (nsid && nsid != 0xffffffff) { return NVME_INVALID_FIELD | NVME_DNR; } - s = blk_get_stats(n->conf.blk); + for (int i = 1; i <= n->num_namespaces; i++) { + NvmeNamespace *ns = nvme_ns(n, i); + if (!ns) { + continue; + } - units_read = s->nr_bytes[BLOCK_ACCT_READ] >> BDRV_SECTOR_BITS; - units_written = s->nr_bytes[BLOCK_ACCT_WRITE] >> BDRV_SECTOR_BITS; - read_commands = s->nr_ops[BLOCK_ACCT_READ]; - write_commands = s->nr_ops[BLOCK_ACCT_WRITE]; + BlockAcctStats *s = blk_get_stats(ns->blk); + + units_read += s->nr_bytes[BLOCK_ACCT_READ] >> BDRV_SECTOR_BITS; + units_written += s->nr_bytes[BLOCK_ACCT_WRITE] >> BDRV_SECTOR_BITS; + read_commands += s->nr_ops[BLOCK_ACCT_READ]; + write_commands += s->nr_ops[BLOCK_ACCT_WRITE]; + } if (off > sizeof(smart)) { return NVME_INVALID_FIELD | NVME_DNR; @@ -1527,18 +1550,23 @@ static uint16_t nvme_identify_ns(NvmeCtrl *n, NvmeRequest *req) { NvmeNamespace *ns; NvmeIdentify *c = (NvmeIdentify *)&req->cmd; + NvmeIdNs *id_ns, inactive = { 0 }; uint32_t nsid = le32_to_cpu(c->nsid); trace_nvme_dev_identify_ns(nsid); - if (unlikely(nsid == 0 || nsid > n->num_namespaces)) { - trace_nvme_dev_err_invalid_ns(nsid, n->num_namespaces); + if (!nvme_nsid_valid(n, nsid)) { return NVME_INVALID_NSID | NVME_DNR; } - ns = &n->namespaces[nsid - 1]; + ns = nvme_ns(n, nsid); + if (unlikely(!ns)) { + id_ns = &inactive; + } else { + id_ns = &ns->id_ns; + } - return nvme_dma(n, (uint8_t *)&ns->id_ns, sizeof(ns->id_ns), + return nvme_dma(n, (uint8_t *)id_ns, sizeof(NvmeIdNs), DMA_DIRECTION_FROM_DEVICE, req); } @@ -1555,7 +1583,7 @@ static uint16_t nvme_identify_nslist(NvmeCtrl *n, NvmeRequest *req) list = g_malloc0(data_len); for (int i = 1; i <= n->num_namespaces; i++) { - if (i <= min_nsid) { + if (i <= min_nsid || !nvme_ns(n, i)) { continue; } list[j++] = cpu_to_le32(i); @@ -1573,7 +1601,6 @@ static uint16_t nvme_identify_ns_descr_list(NvmeCtrl *n, NvmeRequest *req) { NvmeIdentify *c = (NvmeIdentify *)&req->cmd; uint32_t nsid = le32_to_cpu(c->nsid); - uint8_t list[NVME_IDENTIFY_DATA_SIZE]; struct data { @@ -1587,11 +1614,14 @@ static uint16_t nvme_identify_ns_descr_list(NvmeCtrl *n, NvmeRequest *req) trace_nvme_dev_identify_ns_descr_list(nsid); - if (unlikely(nsid == 0 || nsid > n->num_namespaces)) { - trace_nvme_dev_err_invalid_ns(nsid, n->num_namespaces); + if (!nvme_nsid_valid(n, nsid)) { return NVME_INVALID_NSID | NVME_DNR; } + if (unlikely(!nvme_ns(n, nsid))) { + return NVME_INVALID_FIELD | NVME_DNR; + } + /* * Because the NGUID and EUI64 fields are 0 in the Identify Namespace data * structure, a Namespace UUID (nidt = 0x3) must be reported in the @@ -1726,7 +1756,7 @@ static uint16_t nvme_get_feature(NvmeCtrl *n, NvmeRequest *req) result = cpu_to_le32(n->features.err_rec); break; case NVME_VOLATILE_WRITE_CACHE: - result = cpu_to_le32(blk_enable_write_cache(n->conf.blk)); + result = cpu_to_le32(n->features.volatile_wc); trace_nvme_dev_getfeat_vwcache(result ? "enabled" : "disabled"); break; case NVME_NUMBER_OF_QUEUES: @@ -1779,6 +1809,8 @@ static uint16_t nvme_set_feature_timestamp(NvmeCtrl *n, NvmeRequest *req) static uint16_t nvme_set_feature(NvmeCtrl *n, NvmeRequest *req) { + NvmeNamespace *ns; + NvmeCmd *cmd = &req->cmd; uint32_t dw10 = le32_to_cpu(cmd->cdw10); uint32_t dw11 = le32_to_cpu(cmd->cdw11); @@ -1812,12 +1844,23 @@ static uint16_t nvme_set_feature(NvmeCtrl *n, NvmeRequest *req) break; case NVME_VOLATILE_WRITE_CACHE: - if (blk_enable_write_cache(n->conf.blk)) { - blk_flush(n->conf.blk); + n->features.volatile_wc = dw11; + + for (int i = 1; i <= n->num_namespaces; i++) { + ns = nvme_ns(n, i); + if (!ns) { + continue; + } + + if (blk_enable_write_cache(ns->blk)) { + blk_flush(ns->blk); + } + + blk_set_enable_write_cache(ns->blk, dw11 & 1); } - blk_set_enable_write_cache(n->conf.blk, dw11 & 1); break; + case NVME_NUMBER_OF_QUEUES: if (n->qs_created) { return NVME_CMD_SEQ_ERROR | NVME_DNR; @@ -1946,9 +1989,17 @@ static void nvme_process_sq(void *opaque) static void nvme_clear_ctrl(NvmeCtrl *n) { + NvmeNamespace *ns; int i; - blk_drain(n->conf.blk); + for (i = 1; i <= n->num_namespaces; i++) { + ns = nvme_ns(n, i); + if (!ns) { + continue; + } + + blk_drain(ns->blk); + } for (i = 0; i < n->params.max_ioqpairs + 1; i++) { if (n->sq[i] != NULL) { @@ -1971,7 +2022,15 @@ static void nvme_clear_ctrl(NvmeCtrl *n) n->outstanding_aers = 0; n->qs_created = false; - blk_flush(n->conf.blk); + for (i = 1; i <= n->num_namespaces; i++) { + ns = nvme_ns(n, i); + if (!ns) { + continue; + } + + blk_flush(ns->blk); + } + n->bar.cc = 0; } @@ -2406,6 +2465,11 @@ static int nvme_check_constraints(NvmeCtrl *n, Error **errp) params->max_ioqpairs = params->num_queues - 1; } + if (n->namespace.blk) { + warn_report("nvme: drive is deprecated; please use an nvme-ns device " + "instead"); + } + if (params->max_ioqpairs < 1 || params->max_ioqpairs > PCI_MSIX_FLAGS_QSIZE) { error_setg(errp, "nvme: max_ioqpairs must be between 1 and %d", @@ -2413,11 +2477,6 @@ static int nvme_check_constraints(NvmeCtrl *n, Error **errp) return -1; } - if (!n->conf.blk) { - error_setg(errp, "nvme: block backend not configured"); - return -1; - } - if (!params->serial) { error_setg(errp, "nvme: serial not configured"); return -1; @@ -2426,22 +2485,10 @@ static int nvme_check_constraints(NvmeCtrl *n, Error **errp) return 0; } -static int nvme_init_blk(NvmeCtrl *n, Error **errp) -{ - blkconf_blocksizes(&n->conf); - if (!blkconf_apply_backend_options(&n->conf, blk_is_read_only(n->conf.blk), - false, errp)) { - return -1; - } - - return 0; -} - static void nvme_init_state(NvmeCtrl *n) { - n->num_namespaces = 1; + n->num_namespaces = NVME_MAX_NAMESPACES; n->reg_size = pow2ceil(0x1008 + 2 * (n->params.max_ioqpairs) * 4); - n->namespaces = g_new0(NvmeNamespace, n->num_namespaces); n->sq = g_new0(NvmeSQueue *, n->params.max_ioqpairs + 1); n->cq = g_new0(NvmeCQueue *, n->params.max_ioqpairs + 1); n->temperature = NVME_TEMPERATURE; @@ -2557,6 +2604,7 @@ static void nvme_init_ctrl(NvmeCtrl *n) id->nn = cpu_to_le32(n->num_namespaces); id->oncs = cpu_to_le16(NVME_ONCS_WRITE_ZEROES | NVME_ONCS_TIMESTAMP); + id->vwc = 0x1; id->sgls = cpu_to_le32(NVME_CTRL_SGLS_SUPPORTED_NO_ALIGNMENT | NVME_CTRL_SGLS_BITBUCKET); @@ -2566,9 +2614,6 @@ static void nvme_init_ctrl(NvmeCtrl *n) id->psd[0].mp = cpu_to_le16(0x9c4); id->psd[0].enlat = cpu_to_le32(0x10); id->psd[0].exlat = cpu_to_le32(0x4); - if (blk_enable_write_cache(n->conf.blk)) { - id->vwc = 1; - } n->bar.cap = 0; NVME_CAP_SET_MQES(n->bar.cap, 0x7ff); @@ -2581,25 +2626,39 @@ static void nvme_init_ctrl(NvmeCtrl *n) n->bar.intmc = n->bar.intms = 0; } -static int nvme_init_namespace(NvmeCtrl *n, NvmeNamespace *ns, Error **errp) +int nvme_register_namespace(NvmeCtrl *n, NvmeNamespace *ns, Error **errp) { - int64_t bs_size; - NvmeIdNs *id_ns = &ns->id_ns; + uint32_t nsid = nvme_nsid(ns); - bs_size = blk_getlength(n->conf.blk); - if (bs_size < 0) { - error_setg_errno(errp, -bs_size, "blk_getlength"); + if (nsid > NVME_MAX_NAMESPACES) { + error_setg(errp, "invalid namespace id (must be between 0 and %d)", + NVME_MAX_NAMESPACES); return -1; } - id_ns->lbaf[0].ds = BDRV_SECTOR_BITS; - n->ns_size = bs_size; + if (!nsid) { + for (int i = 1; i <= n->num_namespaces; i++) { + NvmeNamespace *ns = nvme_ns(n, i); + if (!ns) { + nsid = i; + break; + } + } - id_ns->nsze = cpu_to_le64(nvme_ns_nlbas(n, ns)); + if (!nsid) { + error_setg(errp, "no free namespace id"); + return -1; + } + } else { + if (n->namespaces[nsid - 1]) { + error_setg(errp, "namespace id '%d' is already in use", nsid); + return -1; + } + } - /* no thin provisioning */ - id_ns->ncap = id_ns->nsze; - id_ns->nuse = id_ns->ncap; + trace_nvme_dev_register_namespace(nsid); + + n->namespaces[nsid - 1] = ns; return 0; } @@ -2607,26 +2666,28 @@ static int nvme_init_namespace(NvmeCtrl *n, NvmeNamespace *ns, Error **errp) static void nvme_realize(PCIDevice *pci_dev, Error **errp) { NvmeCtrl *n = NVME(pci_dev); - int i; + NvmeNamespace *ns; if (nvme_check_constraints(n, errp)) { return; } + qbus_create_inplace(&n->bus, sizeof(NvmeBus), TYPE_NVME_BUS, + &pci_dev->qdev, n->parent_obj.qdev.id); + nvme_init_state(n); + nvme_init_pci(n, pci_dev); + nvme_init_ctrl(n); - if (nvme_init_blk(n, errp)) { - return; - } + /* setup a namespace if the controller drive property was given */ + if (n->namespace.blk) { + ns = &n->namespace; + ns->params.nsid = 1; - for (i = 0; i < n->num_namespaces; i++) { - if (nvme_init_namespace(n, &n->namespaces[i], errp)) { + if (nvme_ns_setup(n, ns, errp)) { return; } } - - nvme_init_pci(n, pci_dev); - nvme_init_ctrl(n); } static void nvme_exit(PCIDevice *pci_dev) @@ -2647,7 +2708,8 @@ static void nvme_exit(PCIDevice *pci_dev) } static Property nvme_props[] = { - DEFINE_BLOCK_PROPERTIES(NvmeCtrl, conf), + DEFINE_BLOCK_PROPERTIES_BASE(NvmeCtrl, conf), \ + DEFINE_PROP_DRIVE("drive", NvmeCtrl, namespace.blk), \ DEFINE_NVME_PROPERTIES(NvmeCtrl, params), DEFINE_PROP_END_OF_LIST(), }; @@ -2679,26 +2741,35 @@ static void nvme_instance_init(Object *obj) { NvmeCtrl *s = NVME(obj); - device_add_bootindex_property(obj, &s->conf.bootindex, - "bootindex", "/namespace@1,0", - DEVICE(obj), &error_abort); + if (s->namespace.blk) { + device_add_bootindex_property(obj, &s->conf.bootindex, + "bootindex", "/namespace@1,0", + DEVICE(obj), &error_abort); + } } static const TypeInfo nvme_info = { .name = TYPE_NVME, .parent = TYPE_PCI_DEVICE, .instance_size = sizeof(NvmeCtrl), - .class_init = nvme_class_init, .instance_init = nvme_instance_init, + .class_init = nvme_class_init, .interfaces = (InterfaceInfo[]) { { INTERFACE_PCIE_DEVICE }, { } }, }; +static const TypeInfo nvme_bus_info = { + .name = TYPE_NVME_BUS, + .parent = TYPE_BUS, + .instance_size = sizeof(NvmeBus), +}; + static void nvme_register_types(void) { type_register_static(&nvme_info); + type_register_static(&nvme_bus_info); } type_init(nvme_register_types) diff --git a/hw/block/nvme.h b/hw/block/nvme.h index ed4a5ce4121d..f42c17651b7b 100644 --- a/hw/block/nvme.h +++ b/hw/block/nvme.h @@ -2,6 +2,9 @@ #define HW_NVME_H #include "block/nvme.h" +#include "nvme-ns.h" + +#define NVME_MAX_NAMESPACES 256 #define DEFINE_NVME_PROPERTIES(_state, _props) \ DEFINE_PROP_STRING("serial", _state, _props.serial), \ @@ -93,26 +96,6 @@ typedef struct NvmeCQueue { QTAILQ_HEAD(, NvmeRequest) req_list; } NvmeCQueue; -typedef struct NvmeNamespace { - NvmeIdNs id_ns; -} NvmeNamespace; - -static inline NvmeLBAF *nvme_ns_lbaf(NvmeNamespace *ns) -{ - NvmeIdNs *id_ns = &ns->id_ns; - return &id_ns->lbaf[NVME_ID_NS_FLBAS_INDEX(id_ns->flbas)]; -} - -static inline uint8_t nvme_ns_lbads(NvmeNamespace *ns) -{ - return nvme_ns_lbaf(ns)->ds; -} - -static inline size_t nvme_ns_lbads_bytes(NvmeNamespace *ns) -{ - return 1 << nvme_ns_lbads(ns); -} - typedef enum NvmeAIOOp { NVME_AIO_OPC_NONE = 0x0, NVME_AIO_OPC_FLUSH = 0x1, @@ -167,6 +150,13 @@ static inline bool nvme_req_is_write(NvmeRequest *req) } } +#define TYPE_NVME_BUS "nvme-bus" +#define NVME_BUS(obj) OBJECT_CHECK(NvmeBus, (obj), TYPE_NVME_BUS) + +typedef struct NvmeBus { + BusState parent_bus; +} NvmeBus; + #define TYPE_NVME "nvme" #define NVME(obj) \ OBJECT_CHECK(NvmeCtrl, (obj), TYPE_NVME) @@ -176,8 +166,9 @@ typedef struct NvmeCtrl { MemoryRegion iomem; MemoryRegion ctrl_mem; NvmeBar bar; - BlockConf conf; NvmeParams params; + NvmeBus bus; + BlockConf conf; bool qs_created; uint32_t page_size; @@ -188,7 +179,6 @@ typedef struct NvmeCtrl { uint32_t reg_size; uint32_t num_namespaces; uint32_t max_q_ents; - uint64_t ns_size; uint8_t outstanding_aers; uint8_t *cmbuf; uint64_t irq_status; @@ -202,7 +192,8 @@ typedef struct NvmeCtrl { QTAILQ_HEAD(, NvmeAsyncEvent) aer_queue; int aer_queued; - NvmeNamespace *namespaces; + NvmeNamespace namespace; + NvmeNamespace *namespaces[NVME_MAX_NAMESPACES]; NvmeSQueue **sq; NvmeCQueue **cq; NvmeSQueue admin_sq; @@ -211,9 +202,13 @@ typedef struct NvmeCtrl { NvmeFeatureVal features; } NvmeCtrl; -static inline uint64_t nvme_ns_nlbas(NvmeCtrl *n, NvmeNamespace *ns) +static inline NvmeNamespace *nvme_ns(NvmeCtrl *n, uint32_t nsid) { - return n->ns_size >> nvme_ns_lbads(ns); + if (!nsid || nsid > n->num_namespaces) { + return NULL; + } + + return n->namespaces[nsid - 1]; } static inline uint16_t nvme_cid(NvmeRequest *req) @@ -225,4 +220,6 @@ static inline uint16_t nvme_cid(NvmeRequest *req) return 0xffff; } +int nvme_register_namespace(NvmeCtrl *n, NvmeNamespace *ns, Error **errp); + #endif /* HW_NVME_H */ diff --git a/hw/block/trace-events b/hw/block/trace-events index accbb04fe396..8fec87260555 100644 --- a/hw/block/trace-events +++ b/hw/block/trace-events @@ -29,6 +29,7 @@ hd_geometry_guess(void *blk, uint32_t cyls, uint32_t heads, uint32_t secs, int t # nvme.c # nvme traces for successful events +nvme_dev_register_namespace(uint32_t nsid) "nsid %"PRIu32"" nvme_dev_irq_msix(uint32_t vector) "raising MSI-X IRQ vector %u" nvme_dev_irq_pin(void) "pulsing IRQ pin" nvme_dev_irq_masked(void) "IRQ is masked" @@ -39,9 +40,9 @@ nvme_dev_req_add_aio(uint16_t cid, void *aio, const char *blkname, uint64_t offs nvme_dev_aio_cb(uint16_t cid, void *aio, const char *blkname, uint64_t offset, const char *opc, void *req) "cid %"PRIu16" aio %p blk \"%s\" offset %"PRIu64" opc \"%s\" req %p" nvme_dev_io_cmd(uint16_t cid, uint32_t nsid, uint16_t sqid, uint8_t opcode) "cid %"PRIu16" nsid %"PRIu32" sqid %"PRIu16" opc 0x%"PRIx8"" nvme_dev_admin_cmd(uint16_t cid, uint16_t sqid, uint8_t opcode) "cid %"PRIu16" sqid %"PRIu16" opc 0x%"PRIx8"" -nvme_dev_rw(const char *verb, uint32_t blk_count, uint64_t byte_count, uint64_t lba) "%s %"PRIu32" blocks (%"PRIu64" bytes) from LBA %"PRIu64"" -nvme_dev_rw_cb(uint16_t cid) "cid %"PRIu16"" -nvme_dev_write_zeroes(uint16_t cid, uint64_t slba, uint32_t nlb) "cid %"PRIu16" slba %"PRIu64" nlb %"PRIu32"" +nvme_dev_rw(uint16_t cid, const char *verb, uint32_t nsid, uint32_t nlb, uint64_t count, uint64_t lba) "cid %"PRIu16" %s nsid %"PRIu32" nlb %"PRIu32" count %"PRIu64" lba 0x%"PRIx64"" +nvme_dev_rw_cb(uint16_t cid, uint32_t nsid) "cid %"PRIu16" nsid %"PRIu32"" +nvme_dev_write_zeroes(uint16_t cid, uint32_t nsid, uint64_t slba, uint32_t nlb) "cid %"PRIu16" nsid %"PRIu32" slba %"PRIu64" nlb %"PRIu32"" nvme_dev_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"" nvme_dev_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" nvme_dev_del_sq(uint16_t qid) "deleting submission queue sqid=%"PRIu16"" @@ -98,7 +99,6 @@ nvme_dev_err_invalid_prplist_ent(uint64_t prplist) "PRP list entry is null or no nvme_dev_err_invalid_prp2_align(uint64_t prp2) "PRP2 is not page aligned: 0x%"PRIx64"" nvme_dev_err_invalid_prp2_missing(void) "PRP2 is null and more data to be transferred" nvme_dev_err_invalid_prp(void) "invalid PRP" -nvme_dev_err_invalid_ns(uint32_t ns, uint32_t limit) "invalid namespace %u not within 1-%u" nvme_dev_err_invalid_opc(uint8_t opc) "invalid opcode 0x%"PRIx8"" nvme_dev_err_invalid_admin_opc(uint8_t opc) "invalid admin opcode 0x%"PRIx8"" nvme_dev_err_invalid_lba_range(uint64_t start, uint64_t len, uint64_t limit) "Invalid LBA start=%"PRIu64" len=%"PRIu64" limit=%"PRIu64""