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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::f36; envelope-from=minwoo.im.dev@gmail.com; helo=mail-qv1-xf36.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=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: Kevin Wolf , Klaus Jensen , Max Reitz , Klaus Jensen , Minwoo Im , Keith Busch Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" Given that now we have nvme-subsys device supported, we can manage namespace allocated, but not attached: detached. This patch introduced a parameter for nvme-ns device named 'detached'. This parameter indicates whether the given namespace device is detached from a entire NVMe subsystem('subsys' given case, shared namespace) or a controller('bus' given case, private namespace). - Allocated namespace 1) Shared ns in the subsystem 'subsys0': -device nvme-ns,id=3Dns1,drive=3Dblknvme0,nsid=3D1,subsys=3Dsubsys0,de= tached=3Dtrue 2) Private ns for the controller 'nvme0' of the subsystem 'subsys0': -device nvme-subsys,id=3Dsubsys0 -device nvme,serial=3Dfoo,id=3Dnvme0,subsys=3Dsubsys0 -device nvme-ns,id=3Dns1,drive=3Dblknvme0,nsid=3D1,bus=3Dnvme0,detache= d=3Dtrue 3) (Invalid case) Controller 'nvme0' has no subsystem to manage ns: -device nvme,serial=3Dfoo,id=3Dnvme0 -device nvme-ns,id=3Dns1,drive=3Dblknvme0,nsid=3D1,bus=3Dnvme0,detache= d=3Dtrue Signed-off-by: Minwoo Im Tested-by: Klaus Jensen Reviewed-by: Klaus Jensen --- hw/block/nvme-ns.c | 1 + hw/block/nvme-ns.h | 1 + hw/block/nvme-subsys.h | 1 + hw/block/nvme.c | 41 +++++++++++++++++++++++++++++++++++++++-- hw/block/nvme.h | 22 ++++++++++++++++++++++ 5 files changed, 64 insertions(+), 2 deletions(-) diff --git a/hw/block/nvme-ns.c b/hw/block/nvme-ns.c index 0e8760020483..eda6a0c003a4 100644 --- a/hw/block/nvme-ns.c +++ b/hw/block/nvme-ns.c @@ -399,6 +399,7 @@ static Property nvme_ns_props[] =3D { DEFINE_BLOCK_PROPERTIES(NvmeNamespace, blkconf), DEFINE_PROP_LINK("subsys", NvmeNamespace, subsys, TYPE_NVME_SUBSYS, NvmeSubsystem *), + DEFINE_PROP_BOOL("detached", NvmeNamespace, params.detached, false), DEFINE_PROP_UINT32("nsid", NvmeNamespace, params.nsid, 0), DEFINE_PROP_UUID("uuid", NvmeNamespace, params.uuid), DEFINE_PROP_UINT16("mssrl", NvmeNamespace, params.mssrl, 128), diff --git a/hw/block/nvme-ns.h b/hw/block/nvme-ns.h index 7af6884862b5..b0c00e115d81 100644 --- a/hw/block/nvme-ns.h +++ b/hw/block/nvme-ns.h @@ -26,6 +26,7 @@ typedef struct NvmeZone { } NvmeZone; =20 typedef struct NvmeNamespaceParams { + bool detached; uint32_t nsid; QemuUUID uuid; =20 diff --git a/hw/block/nvme-subsys.h b/hw/block/nvme-subsys.h index ccf6a71398d3..890d118117dc 100644 --- a/hw/block/nvme-subsys.h +++ b/hw/block/nvme-subsys.h @@ -23,6 +23,7 @@ typedef struct NvmeSubsystem { uint8_t subnqn[256]; =20 NvmeCtrl *ctrls[NVME_SUBSYS_MAX_CTRLS]; + /* Allocated namespaces for this subsystem */ NvmeNamespace *namespaces[NVME_SUBSYS_MAX_NAMESPACES]; } NvmeSubsystem; =20 diff --git a/hw/block/nvme.c b/hw/block/nvme.c index edd0b85c10ce..f6aeae081840 100644 --- a/hw/block/nvme.c +++ b/hw/block/nvme.c @@ -23,7 +23,7 @@ * max_ioqpairs=3D, \ * aerl=3D, aer_max_queued=3D, \ * mdts=3D,zoned.append_size_limit=3D, \ - * subsys=3D \ + * subsys=3D,detached=3D * -device nvme-ns,drive=3D,bus=3D,nsid=3D,\ * zoned=3D, \ * subsys=3D @@ -82,6 +82,13 @@ * controllers in the subsystem. Otherwise, `bus` must be given to attach * this namespace to a specified single controller as a non-shared names= pace. * + * - `detached` + * Not to attach the namespace device to controllers in the NVMe subsyst= em + * during boot-up. If not given, namespaces are all attahced to all + * controllers in the subsystem by default. + * It's mutual exclusive with 'bus' parameter. It's only valid in case + * `subsys` is provided. + * * Setting `zoned` to true selects Zoned Command Set at the namespace. * In this case, the following namespace properties are available to confi= gure * zoned operation: @@ -4613,6 +4620,20 @@ static void nvme_init_state(NvmeCtrl *n) n->aer_reqs =3D g_new0(NvmeRequest *, n->params.aerl + 1); } =20 +static int nvme_attach_namespace(NvmeCtrl *n, NvmeNamespace *ns, Error **e= rrp) +{ + if (nvme_ns_is_attached(n, ns)) { + error_setg(errp, + "namespace %d is already attached to controller %d", + nvme_nsid(ns), n->cntlid); + return -1; + } + + nvme_ns_attach(n, ns); + + return 0; +} + int nvme_register_namespace(NvmeCtrl *n, NvmeNamespace *ns, Error **errp) { uint32_t nsid =3D nvme_nsid(ns); @@ -4644,7 +4665,23 @@ int nvme_register_namespace(NvmeCtrl *n, NvmeNamespa= ce *ns, Error **errp) =20 trace_pci_nvme_register_namespace(nsid); =20 - n->namespaces[nsid - 1] =3D ns; + /* + * If subsys is not given, namespae is always attached to the controll= er + * because there's no subsystem to manage namespace allocation. + */ + if (!n->subsys) { + if (ns->params.detached) { + error_setg(errp, + "detached needs nvme-subsys specified nvme or nvme-= ns"); + return -1; + } + + return nvme_attach_namespace(n, ns, errp); + } else { + if (!ns->params.detached) { + return nvme_attach_namespace(n, ns, errp); + } + } =20 return 0; } diff --git a/hw/block/nvme.h b/hw/block/nvme.h index f45ace0cff5b..51b8739b4d1e 100644 --- a/hw/block/nvme.h +++ b/hw/block/nvme.h @@ -174,6 +174,10 @@ typedef struct NvmeCtrl { NvmeSubsystem *subsys; =20 NvmeNamespace namespace; + /* + * Attached namespaces to this controller. If subsys is not given, all + * namespaces in this list will always be attached. + */ NvmeNamespace *namespaces[NVME_MAX_NAMESPACES]; NvmeSQueue **sq; NvmeCQueue **cq; @@ -192,6 +196,24 @@ static inline NvmeNamespace *nvme_ns(NvmeCtrl *n, uint= 32_t nsid) return n->namespaces[nsid - 1]; } =20 +static inline bool nvme_ns_is_attached(NvmeCtrl *n, NvmeNamespace *ns) +{ + int nsid; + + for (nsid =3D 1; nsid <=3D n->num_namespaces; nsid++) { + if (nvme_ns(n, nsid) =3D=3D ns) { + return true; + } + } + + return false; +} + +static inline void nvme_ns_attach(NvmeCtrl *n, NvmeNamespace *ns) +{ + n->namespaces[nvme_nsid(ns) - 1] =3D ns; +} + static inline NvmeCQueue *nvme_cq(NvmeRequest *req) { NvmeSQueue *sq =3D req->sq; --=20 2.25.1