hw/ppc/spapr_cpu_core.c

   1 /*
   2  * sPAPR CPU core device, acts as container of CPU thread devices.
   3  *
   4  * Copyright (C) 2016 Bharata B Rao <bharata@linux.vnet.ibm.com>
   5  *
   6  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   7  * See the COPYING file in the top-level directory.
   8  */
   9 #include "hw/cpu/core.h"
  10 #include "hw/ppc/spapr_cpu_core.h"
  11 #include "target-ppc/cpu.h"
  12 #include "hw/ppc/spapr.h"
  13 #include "hw/boards.h"
  14 #include "qapi/error.h"
  15 #include <sysemu/cpus.h>
  16 #include "target-ppc/kvm_ppc.h"
  17
  18 static int spapr_cpu_core_realize_child(Object *child, void *opaque)
  19 {
  20     Error **errp = opaque;
  21     sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
  22     CPUState *cs = CPU(child);
  23     PowerPCCPU *cpu = POWERPC_CPU(cs);
  24
  25     object_property_set_bool(child, true, "realized", errp);
  26     if (*errp) {
  27         return 1;
  28     }
  29
  30     spapr_cpu_init(spapr, cpu, errp);
  31     if (*errp) {
  32         return 1;
  33     }
  34     return 0;
  35 }
  36
  37 static void spapr_cpu_core_realize(DeviceState *dev, Error **errp)
  38 {
  39     sPAPRCPUCore *sc = SPAPR_CPU_CORE(OBJECT(dev));
  40     CPUCore *cc = CPU_CORE(OBJECT(dev));
  41     const char *typename = object_class_get_name(sc->cpu_class);
  42     size_t size = object_type_get_instance_size(typename);
  43     Error *local_err = NULL;
  44     Object *obj;
  45     int i;
  46
  47     sc->threads = g_malloc0(size * cc->nr_threads);
  48     for (i = 0; i < cc->nr_threads; i++) {
  49         char id[32];
  50         void *obj = sc->threads + i * size;
  51
  52         object_initialize(obj, size, typename);
  53         snprintf(id, sizeof(id), "thread[%d]", i);
  54         object_property_add_child(OBJECT(sc), id, obj, &local_err);
  55         if (local_err) {
  56             goto err;
  57         }
  58     }
  59     object_child_foreach(OBJECT(dev), spapr_cpu_core_realize_child, &local_err);
  60     if (local_err) {
  61         goto err;
  62     } else {
  63         return;
  64     }
  65
  66 err:
  67     while (i >= 0) {
  68         obj = sc->threads + i * size;
  69         object_unparent(obj);
  70         i--;
  71     }
  72     g_free(sc->threads);
  73     error_propagate(errp, local_err);
  74 }
  75
  76 static void spapr_cpu_core_class_init(ObjectClass *oc, void *data)
  77 {
  78     DeviceClass *dc = DEVICE_CLASS(oc);
  79     dc->realize = spapr_cpu_core_realize;
  80 }
  81
  82 /*
  83  * instance_init routines from different flavours of sPAPR CPU cores.
  84  * TODO: Add support for 'host' core type.
  85  */
  86 #define SPAPR_CPU_CORE_INITFN(_type, _fname) \
  87 static void glue(glue(spapr_cpu_core_, _fname), _initfn(Object *obj)) \
  88 { \
  89     sPAPRCPUCore *core = SPAPR_CPU_CORE(obj); \
  90     char *name = g_strdup_printf("%s-" TYPE_POWERPC_CPU, stringify(_type)); \
  91     ObjectClass *oc = object_class_by_name(name); \
  92     g_assert(oc); \
  93     g_free((void *)name); \
  94     core->cpu_class = oc; \
  95 }
  96
  97 SPAPR_CPU_CORE_INITFN(POWER7_v2.3, POWER7);
  98 SPAPR_CPU_CORE_INITFN(POWER7+_v2.1, POWER7plus);
  99 SPAPR_CPU_CORE_INITFN(POWER8_v2.0, POWER8);
 100 SPAPR_CPU_CORE_INITFN(POWER8E_v2.1, POWER8E);
 101
 102 typedef struct SPAPRCoreInfo {
 103     const char *name;
 104     void (*initfn)(Object *obj);
 105 } SPAPRCoreInfo;
 106
 107 static const SPAPRCoreInfo spapr_cores[] = {
 108     /* POWER7 and aliases */
 109     { .name = "POWER7_v2.3", .initfn = spapr_cpu_core_POWER7_initfn },
 110     { .name = "POWER7", .initfn = spapr_cpu_core_POWER7_initfn },
 111
 112     /* POWER7+ and aliases */
 113     { .name = "POWER7+_v2.1", .initfn = spapr_cpu_core_POWER7plus_initfn },
 114     { .name = "POWER7+", .initfn = spapr_cpu_core_POWER7plus_initfn },
 115
 116     /* POWER8 and aliases */
 117     { .name = "POWER8_v2.0", .initfn = spapr_cpu_core_POWER8_initfn },
 118     { .name = "POWER8", .initfn = spapr_cpu_core_POWER8_initfn },
 119     { .name = "power8", .initfn = spapr_cpu_core_POWER8_initfn },
 120
 121     /* POWER8E and aliases */
 122     { .name = "POWER8E_v2.1", .initfn = spapr_cpu_core_POWER8E_initfn },
 123     { .name = "POWER8E", .initfn = spapr_cpu_core_POWER8E_initfn },
 124
 125     { .name = NULL }
 126 };
 127
 128 static void spapr_cpu_core_register(const SPAPRCoreInfo *info)
 129 {
 130     TypeInfo type_info = {
 131         .parent = TYPE_SPAPR_CPU_CORE,
 132         .instance_size = sizeof(sPAPRCPUCore),
 133         .instance_init = info->initfn,
 134     };
 135
 136     type_info.name = g_strdup_printf("%s-" TYPE_SPAPR_CPU_CORE, info->name);
 137     type_register(&type_info);
 138     g_free((void *)type_info.name);
 139 }
 140
 141 static const TypeInfo spapr_cpu_core_type_info = {
 142     .name = TYPE_SPAPR_CPU_CORE,
 143     .parent = TYPE_CPU_CORE,
 144     .abstract = true,
 145     .instance_size = sizeof(sPAPRCPUCore),
 146     .class_init = spapr_cpu_core_class_init,
 147 };
 148
 149 static void spapr_cpu_core_register_types(void)
 150 {
 151     const SPAPRCoreInfo *info = spapr_cores;
 152
 153     type_register_static(&spapr_cpu_core_type_info);
 154     while (info->name) {
 155         spapr_cpu_core_register(info);
 156         info++;
 157     }
 158 }
 159
 160 type_init(spapr_cpu_core_register_types)