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Mon, 20 Jun 2022 13:59:35 +0000 (GMT) Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 82F0411C04C; Mon, 20 Jun 2022 13:59:34 +0000 (GMT) Received: from li-c6ac47cc-293c-11b2-a85c-d421c8e4747b.ibm.com.com (unknown [9.171.62.140]) by d06av25.portsmouth.uk.ibm.com (Postfix) with ESMTP; Mon, 20 Jun 2022 13:59:34 +0000 (GMT) From: Pierre Morel To: qemu-s390x@nongnu.org Cc: qemu-devel@nongnu.org, borntraeger@de.ibm.com, pasic@linux.ibm.com, richard.henderson@linaro.org, david@redhat.com, thuth@redhat.com, cohuck@redhat.com, mst@redhat.com, pbonzini@redhat.com, kvm@vger.kernel.org, ehabkost@redhat.com, marcel.apfelbaum@gmail.com, eblake@redhat.com, armbru@redhat.com, seiden@linux.ibm.com, nrb@linux.ibm.com, frankja@linux.ibm.com Subject: [PATCH v8 05/12] s390x/cpu_topology: Adding books to STSI Date: Mon, 20 Jun 2022 16:03:45 +0200 Message-Id: <20220620140352.39398-6-pmorel@linux.ibm.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20220620140352.39398-1-pmorel@linux.ibm.com> References: <20220620140352.39398-1-pmorel@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: JzNK1SM0p7NjkcklXvVeHbWKaxicCx-3 X-Proofpoint-GUID: g8LezQPYDgM5uKZiImQtrx3im_GRX0bP X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.883,Hydra:6.0.517,FMLib:17.11.64.514 definitions=2022-06-20_05,2022-06-17_01,2022-02-23_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 mlxlogscore=999 spamscore=0 mlxscore=0 bulkscore=0 lowpriorityscore=0 malwarescore=0 phishscore=0 adultscore=0 impostorscore=0 clxscore=1015 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2204290000 definitions=main-2206200063 Received-SPF: pass client-ip=148.163.158.5; envelope-from=pmorel@linux.ibm.com; helo=mx0b-001b2d01.pphosted.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Let's add STSI support for the container level 3, books, and provide the information back to the guest. Signed-off-by: Pierre Morel --- hw/s390x/cpu-topology.c | 163 +++++++++++++++++++++++++++++--- include/hw/s390x/cpu-topology.h | 20 +++- include/hw/s390x/sclp.h | 1 + target/s390x/cpu_topology.c | 53 ++++++++--- 4 files changed, 210 insertions(+), 27 deletions(-) diff --git a/hw/s390x/cpu-topology.c b/hw/s390x/cpu-topology.c index 0fd6f08084..eba003d498 100644 --- a/hw/s390x/cpu-topology.c +++ b/hw/s390x/cpu-topology.c @@ -86,6 +86,38 @@ static S390TopologySocket *s390_create_socket(MachineState *ms, return socket; } +/* + * s390_create_book: + * @ms: Machine state + * @drawer: the drawer on which to create the book + * @id: the book id + * + * returns a pointer to the created S390TopologyBook structure + * + * On error: return NULL + */ +static S390TopologyBook *s390_create_book(MachineState *ms, + S390TopologyDrawer *drawer, + int id, Error **errp) +{ + DeviceState *dev; + S390TopologyBook *book; + + if (drawer->bus->num_children >= ms->smp.books) { + error_setg(errp, "Unable to create more books."); + return NULL; + } + + dev = qdev_new(TYPE_S390_TOPOLOGY_BOOK); + qdev_realize_and_unref(dev, drawer->bus, &error_fatal); + + book = S390_TOPOLOGY_BOOK(dev); + book->book_id = id; + drawer->cnt++; + + return book; +} + /* * s390_get_cores: * @ms: Machine state @@ -142,6 +174,34 @@ static S390TopologySocket *s390_get_socket(MachineState *ms, return s390_create_socket(ms, book, socket_id, errp); } +/* + * s390_get_book: + * @ms: Machine state + * @drawer: The drawer to search into + * @book_id: the identifier of the book to search for + * @errp: Error pointer + * + * returns a pointer to a S390TopologySocket structure within a drawer having + * the specified book_id. + * First search if the drawer is already containing the S390TopologySocket + * structure and if not create one with this book_id. + */ +static S390TopologyBook *s390_get_book(MachineState *ms, + S390TopologyDrawer *drawer, + int book_id, Error **errp) +{ + S390TopologyBook *book; + BusChild *kid; + + QTAILQ_FOREACH(kid, &drawer->bus->children, sibling) { + book = S390_TOPOLOGY_BOOK(kid->child); + if (book->book_id == book_id) { + return book; + } + } + return s390_create_book(ms, drawer, book_id, errp); +} + /* * s390_topology_new_cpu: * @core_id: the core ID is machine wide @@ -155,16 +215,23 @@ static S390TopologySocket *s390_get_socket(MachineState *ms, */ bool s390_topology_new_cpu(MachineState *ms, int core_id, Error **errp) { + S390TopologyDrawer *drawer; S390TopologyBook *book; S390TopologySocket *socket; S390TopologyCores *cores; int nb_cores_per_socket; + int nb_cores_per_book; int origin, bit; - book = s390_get_topology(); + drawer = s390_get_topology(); nb_cores_per_socket = ms->smp.cores * ms->smp.threads; + nb_cores_per_book = ms->smp.sockets * nb_cores_per_socket; + book = s390_get_book(ms, drawer, core_id / nb_cores_per_book, errp); + if (!book) { + return false; + } socket = s390_get_socket(ms, book, core_id / nb_cores_per_socket, errp); if (!socket) { return false; @@ -206,23 +273,23 @@ void s390_topology_setup(MachineState *ms) DeviceState *dev; /* Create BOOK bridge device */ - dev = qdev_new(TYPE_S390_TOPOLOGY_BOOK); + dev = qdev_new(TYPE_S390_TOPOLOGY_DRAWER); object_property_add_child(qdev_get_machine(), - TYPE_S390_TOPOLOGY_BOOK, OBJECT(dev)); + TYPE_S390_TOPOLOGY_DRAWER, OBJECT(dev)); sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); } -S390TopologyBook *s390_get_topology(void) +S390TopologyDrawer *s390_get_topology(void) { - static S390TopologyBook *book; + static S390TopologyDrawer *drawer; - if (!book) { - book = S390_TOPOLOGY_BOOK( - object_resolve_path(TYPE_S390_TOPOLOGY_BOOK, NULL)); - assert(book != NULL); + if (!drawer) { + drawer = S390_TOPOLOGY_DRAWER(object_resolve_path( + TYPE_S390_TOPOLOGY_DRAWER, NULL)); + assert(drawer != NULL); } - return book; + return drawer; } /* --- CORES Definitions --- */ @@ -365,12 +432,13 @@ static void book_class_init(ObjectClass *oc, void *data) hc->unplug = qdev_simple_device_unplug_cb; set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); dc->realize = s390_book_device_realize; + dc->bus_type = TYPE_S390_TOPOLOGY_DRAWER_BUS; dc->desc = "topology book"; } static const TypeInfo book_info = { .name = TYPE_S390_TOPOLOGY_BOOK, - .parent = TYPE_SYS_BUS_DEVICE, + .parent = TYPE_DEVICE, .instance_size = sizeof(S390TopologyBook), .class_init = book_class_init, .interfaces = (InterfaceInfo[]) { @@ -379,6 +447,77 @@ static const TypeInfo book_info = { } }; +/* --- DRAWER Definitions --- */ +static Property s390_topology_drawer_properties[] = { + DEFINE_PROP_UINT8("drawer_id", S390TopologyDrawer, drawer_id, 0), + DEFINE_PROP_END_OF_LIST(), +}; + +static char *drawer_bus_get_dev_path(DeviceState *dev) +{ + S390TopologyDrawer *drawer = S390_TOPOLOGY_DRAWER(dev); + DeviceState *node = dev->parent_bus->parent; + char *id = qdev_get_dev_path(node); + char *ret; + + if (id) { + ret = g_strdup_printf("%s:%02d", id, drawer->drawer_id); + g_free(id); + } else { + ret = g_strdup_printf("_:%02d", drawer->drawer_id); + } + + return ret; +} + +static void drawer_bus_class_init(ObjectClass *oc, void *data) +{ + BusClass *k = BUS_CLASS(oc); + + k->get_dev_path = drawer_bus_get_dev_path; + k->max_dev = S390_MAX_DRAWERS; +} + +static const TypeInfo drawer_bus_info = { + .name = TYPE_S390_TOPOLOGY_DRAWER_BUS, + .parent = TYPE_BUS, + .instance_size = 0, + .class_init = drawer_bus_class_init, +}; + +static void s390_drawer_device_realize(DeviceState *dev, Error **errp) +{ + S390TopologyDrawer *drawer = S390_TOPOLOGY_DRAWER(dev); + BusState *bus; + + bus = qbus_new(TYPE_S390_TOPOLOGY_DRAWER_BUS, dev, + TYPE_S390_TOPOLOGY_DRAWER_BUS); + qbus_set_hotplug_handler(bus, OBJECT(dev)); + drawer->bus = bus; +} + +static void drawer_class_init(ObjectClass *oc, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(oc); + HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc); + + hc->unplug = qdev_simple_device_unplug_cb; + set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); + dc->realize = s390_drawer_device_realize; + device_class_set_props(dc, s390_topology_drawer_properties); + dc->desc = "topology drawer"; +} + +static const TypeInfo drawer_info = { + .name = TYPE_S390_TOPOLOGY_DRAWER, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(S390TopologyDrawer), + .class_init = drawer_class_init, + .interfaces = (InterfaceInfo[]) { + { TYPE_HOTPLUG_HANDLER }, + { } + } +}; static void topology_register(void) { type_register_static(&cpu_cores_info); @@ -386,6 +525,8 @@ static void topology_register(void) type_register_static(&socket_info); type_register_static(&book_bus_info); type_register_static(&book_info); + type_register_static(&drawer_bus_info); + type_register_static(&drawer_info); } type_init(topology_register); diff --git a/include/hw/s390x/cpu-topology.h b/include/hw/s390x/cpu-topology.h index beec61706c..5ffb8cba77 100644 --- a/include/hw/s390x/cpu-topology.h +++ b/include/hw/s390x/cpu-topology.h @@ -56,18 +56,30 @@ OBJECT_DECLARE_SIMPLE_TYPE(S390TopologySocket, S390_TOPOLOGY_SOCKET) #define TYPE_S390_TOPOLOGY_BOOK "topology book" #define TYPE_S390_TOPOLOGY_BOOK_BUS "book-bus" struct S390TopologyBook { - SysBusDevice parent_obj; + DeviceState parent_obj; BusState *bus; int book_id; int cnt; }; typedef struct S390TopologyBook S390TopologyBook; OBJECT_DECLARE_SIMPLE_TYPE(S390TopologyBook, S390_TOPOLOGY_BOOK) -#define S390_MAX_BOOKS 1 +#define S390_MAX_BOOKS 4 + +#define TYPE_S390_TOPOLOGY_DRAWER "topology drawer" +#define TYPE_S390_TOPOLOGY_DRAWER_BUS "drawer-bus" +struct S390TopologyDrawer { + SysBusDevice parent_obj; + BusState *bus; + uint8_t drawer_id; + int cnt; +}; +typedef struct S390TopologyDrawer S390TopologyDrawer; +OBJECT_DECLARE_SIMPLE_TYPE(S390TopologyDrawer, S390_TOPOLOGY_DRAWER) +#define S390_MAX_DRAWERS 1 -S390TopologyBook *s390_init_topology(void); +S390TopologyDrawer *s390_init_topology(void); -S390TopologyBook *s390_get_topology(void); +S390TopologyDrawer *s390_get_topology(void); void s390_topology_setup(MachineState *ms); bool s390_topology_new_cpu(MachineState *ms, int core_id, Error **errp); diff --git a/include/hw/s390x/sclp.h b/include/hw/s390x/sclp.h index d3ade40a5a..139d46efa4 100644 --- a/include/hw/s390x/sclp.h +++ b/include/hw/s390x/sclp.h @@ -111,6 +111,7 @@ typedef struct CPUEntry { uint8_t reserved1; } QEMU_PACKED CPUEntry; +#define SCLP_READ_SCP_INFO_MNEST 3 #define SCLP_READ_SCP_INFO_FIXED_CPU_OFFSET 128 typedef struct ReadInfo { SCCBHeader h; diff --git a/target/s390x/cpu_topology.c b/target/s390x/cpu_topology.c index 9f656d7e51..d14b2fb25c 100644 --- a/target/s390x/cpu_topology.c +++ b/target/s390x/cpu_topology.c @@ -14,6 +14,7 @@ #include "hw/s390x/pv.h" #include "hw/sysbus.h" #include "hw/s390x/cpu-topology.h" +#include "hw/s390x/sclp.h" static int stsi_15_container(void *p, int nl, int id) { @@ -40,7 +41,7 @@ static int stsi_15_cpus(void *p, S390TopologyCores *cd) } static int set_socket(const MachineState *ms, void *p, - S390TopologySocket *socket) + S390TopologySocket *socket, int level) { BusChild *kid; int l, len = 0; @@ -56,24 +57,56 @@ static int set_socket(const MachineState *ms, void *p, return len; } +static int set_book(const MachineState *ms, void *p, + S390TopologyBook *book, int level) +{ + BusChild *kid; + int l, len = 0; + + if (level >= 3) { + len += stsi_15_container(p, 2, book->book_id); + p += len; + } + + QTAILQ_FOREACH_REVERSE(kid, &book->bus->children, sibling) { + l = set_socket(ms, p, S390_TOPOLOGY_SOCKET(kid->child), level); + p += l; + len += l; + } + + return len; +} + static void setup_stsi(const MachineState *ms, void *p, int level) { - S390TopologyBook *book; + S390TopologyDrawer *drawer; SysIB_151x *sysib; BusChild *kid; + int nb_sockets, nb_books; int len, l; sysib = (SysIB_151x *)p; sysib->mnest = level; - sysib->mag[TOPOLOGY_NR_MAG2] = ms->smp.sockets; + switch (level) { + case 2: + nb_books = 0; + nb_sockets = ms->smp.sockets * ms->smp.books; + break; + case 3: + nb_books = ms->smp.books; + nb_sockets = ms->smp.sockets; + break; + } + sysib->mag[TOPOLOGY_NR_MAG3] = nb_books; + sysib->mag[TOPOLOGY_NR_MAG2] = nb_sockets; sysib->mag[TOPOLOGY_NR_MAG1] = ms->smp.cores * ms->smp.threads; - book = s390_get_topology(); + drawer = s390_get_topology(); len = sizeof(SysIB_151x); p += len; - QTAILQ_FOREACH_REVERSE(kid, &book->bus->children, sibling) { - l = set_socket(ms, p, S390_TOPOLOGY_SOCKET(kid->child)); + QTAILQ_FOREACH_REVERSE(kid, &drawer->bus->children, sibling) { + l = set_book(ms, p, S390_TOPOLOGY_BOOK(kid->child), level); p += l; len += l; } @@ -87,18 +120,14 @@ void insert_stsi_15_1_x(S390CPU *cpu, int sel2, __u64 addr, uint8_t ar) void *p; int ret; - /* - * Until the SCLP STSI Facility reporting the MNEST value is used, - * a sel2 value of 2 is the only value allowed in STSI 15.1.x. - */ - if (sel2 != 2) { + if (sel2 < 2 || sel2 > SCLP_READ_SCP_INFO_MNEST) { setcc(cpu, 3); return; } p = g_malloc0(TARGET_PAGE_SIZE); - setup_stsi(machine, p, 2); + setup_stsi(machine, p, sel2); if (s390_is_pv()) { ret = s390_cpu_pv_mem_write(cpu, 0, p, TARGET_PAGE_SIZE);