/* * QEMU Alpha CPU * * Copyright (c) 2007 Jocelyn Mayer * Copyright (c) 2012 SUSE LINUX Products GmbH * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, see * <http://www.gnu.org/licenses/lgpl-2.1.html> */ #include "cpu.h" #include "qemu-common.h" #include "migration/vmstate.h" static void alpha_cpu_set_pc(CPUState *cs, vaddr value) { AlphaCPU *cpu = ALPHA_CPU(cs); cpu->env.pc = value; } static bool alpha_cpu_has_work(CPUState *cs) { /* Here we are checking to see if the CPU should wake up from HALT. We will have gotten into this state only for WTINT from PALmode. */ /* ??? I'm not sure how the IPL state works with WTINT to keep a CPU asleep even if (some) interrupts have been asserted. For now, assume that if a CPU really wants to stay asleep, it will mask interrupts at the chipset level, which will prevent these bits from being set in the first place. */ return cs->interrupt_request & (CPU_INTERRUPT_HARD | CPU_INTERRUPT_TIMER | CPU_INTERRUPT_SMP | CPU_INTERRUPT_MCHK); } static void alpha_cpu_realizefn(DeviceState *dev, Error **errp) { CPUState *cs = CPU(dev); AlphaCPUClass *acc = ALPHA_CPU_GET_CLASS(dev); qemu_init_vcpu(cs); acc->parent_realize(dev, errp); } /* Sort alphabetically by type name. */ static gint alpha_cpu_list_compare(gconstpointer a, gconstpointer b) { ObjectClass *class_a = (ObjectClass *)a; ObjectClass *class_b = (ObjectClass *)b; const char *name_a, *name_b; name_a = object_class_get_name(class_a); name_b = object_class_get_name(class_b); return strcmp(name_a, name_b); } static void alpha_cpu_list_entry(gpointer data, gpointer user_data) { ObjectClass *oc = data; CPUListState *s = user_data; (*s->cpu_fprintf)(s->file, " %s\n", object_class_get_name(oc)); } void alpha_cpu_list(FILE *f, fprintf_function cpu_fprintf) { CPUListState s = { .file = f, .cpu_fprintf = cpu_fprintf, }; GSList *list; list = object_class_get_list(TYPE_ALPHA_CPU, false); list = g_slist_sort(list, alpha_cpu_list_compare); (*cpu_fprintf)(f, "Available CPUs:\n"); g_slist_foreach(list, alpha_cpu_list_entry, &s); g_slist_free(list); } /* Models */ #define TYPE(model) model "-" TYPE_ALPHA_CPU typedef struct AlphaCPUAlias { const char *alias; const char *typename; } AlphaCPUAlias; static const AlphaCPUAlias alpha_cpu_aliases[] = { { "21064", TYPE("ev4") }, { "21164", TYPE("ev5") }, { "21164a", TYPE("ev56") }, { "21164pc", TYPE("pca56") }, { "21264", TYPE("ev6") }, { "21264a", TYPE("ev67") }, }; static ObjectClass *alpha_cpu_class_by_name(const char *cpu_model) { ObjectClass *oc = NULL; char *typename; int i; if (cpu_model == NULL) { return NULL; } oc = object_class_by_name(cpu_model); if (oc != NULL && object_class_dynamic_cast(oc, TYPE_ALPHA_CPU) != NULL && !object_class_is_abstract(oc)) { return oc; } for (i = 0; i < ARRAY_SIZE(alpha_cpu_aliases); i++) { if (strcmp(cpu_model, alpha_cpu_aliases[i].alias) == 0) { oc = object_class_by_name(alpha_cpu_aliases[i].typename); assert(oc != NULL && !object_class_is_abstract(oc)); return oc; } } typename = g_strdup_printf("%s-" TYPE_ALPHA_CPU, cpu_model); oc = object_class_by_name(typename); g_free(typename); if (oc != NULL && object_class_is_abstract(oc)) { oc = NULL; } return oc; } AlphaCPU *cpu_alpha_init(const char *cpu_model) { AlphaCPU *cpu; ObjectClass *cpu_class; cpu_class = alpha_cpu_class_by_name(cpu_model); if (cpu_class == NULL) { /* Default to ev67; no reason not to emulate insns by default. */ cpu_class = object_class_by_name(TYPE("ev67")); } cpu = ALPHA_CPU(object_new(object_class_get_name(cpu_class))); object_property_set_bool(OBJECT(cpu), true, "realized", NULL); return cpu; } static void ev4_cpu_initfn(Object *obj) { AlphaCPU *cpu = ALPHA_CPU(obj); CPUAlphaState *env = &cpu->env; env->implver = IMPLVER_2106x; } static const TypeInfo ev4_cpu_type_info = { .name = TYPE("ev4"), .parent = TYPE_ALPHA_CPU, .instance_init = ev4_cpu_initfn, }; static void ev5_cpu_initfn(Object *obj) { AlphaCPU *cpu = ALPHA_CPU(obj); CPUAlphaState *env = &cpu->env; env->implver = IMPLVER_21164; } static const TypeInfo ev5_cpu_type_info = { .name = TYPE("ev5"), .parent = TYPE_ALPHA_CPU, .instance_init = ev5_cpu_initfn, }; static void ev56_cpu_initfn(Object *obj) { AlphaCPU *cpu = ALPHA_CPU(obj); CPUAlphaState *env = &cpu->env; env->amask |= AMASK_BWX; } static const TypeInfo ev56_cpu_type_info = { .name = TYPE("ev56"), .parent = TYPE("ev5"), .instance_init = ev56_cpu_initfn, }; static void pca56_cpu_initfn(Object *obj) { AlphaCPU *cpu = ALPHA_CPU(obj); CPUAlphaState *env = &cpu->env; env->amask |= AMASK_MVI; } static const TypeInfo pca56_cpu_type_info = { .name = TYPE("pca56"), .parent = TYPE("ev56"), .instance_init = pca56_cpu_initfn, }; static void ev6_cpu_initfn(Object *obj) { AlphaCPU *cpu = ALPHA_CPU(obj); CPUAlphaState *env = &cpu->env; env->implver = IMPLVER_21264; env->amask = AMASK_BWX | AMASK_FIX | AMASK_MVI | AMASK_TRAP; } static const TypeInfo ev6_cpu_type_info = { .name = TYPE("ev6"), .parent = TYPE_ALPHA_CPU, .instance_init = ev6_cpu_initfn, }; static void ev67_cpu_initfn(Object *obj) { AlphaCPU *cpu = ALPHA_CPU(obj); CPUAlphaState *env = &cpu->env; env->amask |= AMASK_CIX | AMASK_PREFETCH; } static const TypeInfo ev67_cpu_type_info = { .name = TYPE("ev67"), .parent = TYPE("ev6"), .instance_init = ev67_cpu_initfn, }; static const TypeInfo ev68_cpu_type_info = { .name = TYPE("ev68"), .parent = TYPE("ev67"), }; static void alpha_cpu_initfn(Object *obj) { CPUState *cs = CPU(obj); AlphaCPU *cpu = ALPHA_CPU(obj); CPUAlphaState *env = &cpu->env; cs->env_ptr = env; cpu_exec_init(cs, &error_abort); tlb_flush(cs, 1); alpha_translate_init(); #if defined(CONFIG_USER_ONLY) env->ps = PS_USER_MODE; cpu_alpha_store_fpcr(env, (FPCR_INVD | FPCR_DZED | FPCR_OVFD | FPCR_UNFD | FPCR_INED | FPCR_DNOD | FPCR_DYN_NORMAL)); #endif env->lock_addr = -1; env->fen = 1; } static void alpha_cpu_class_init(ObjectClass *oc, void *data) { DeviceClass *dc = DEVICE_CLASS(oc); CPUClass *cc = CPU_CLASS(oc); AlphaCPUClass *acc = ALPHA_CPU_CLASS(oc); acc->parent_realize = dc->realize; dc->realize = alpha_cpu_realizefn; cc->class_by_name = alpha_cpu_class_by_name; cc->has_work = alpha_cpu_has_work; cc->do_interrupt = alpha_cpu_do_interrupt; cc->cpu_exec_interrupt = alpha_cpu_exec_interrupt; cc->dump_state = alpha_cpu_dump_state; cc->set_pc = alpha_cpu_set_pc; cc->gdb_read_register = alpha_cpu_gdb_read_register; cc->gdb_write_register = alpha_cpu_gdb_write_register; #ifdef CONFIG_USER_ONLY cc->handle_mmu_fault = alpha_cpu_handle_mmu_fault; #else cc->do_unassigned_access = alpha_cpu_unassigned_access; cc->do_unaligned_access = alpha_cpu_do_unaligned_access; cc->get_phys_page_debug = alpha_cpu_get_phys_page_debug; dc->vmsd = &vmstate_alpha_cpu; #endif cc->gdb_num_core_regs = 67; } static const TypeInfo alpha_cpu_type_info = { .name = TYPE_ALPHA_CPU, .parent = TYPE_CPU, .instance_size = sizeof(AlphaCPU), .instance_init = alpha_cpu_initfn, .abstract = true, .class_size = sizeof(AlphaCPUClass), .class_init = alpha_cpu_class_init, }; static void alpha_cpu_register_types(void) { type_register_static(&alpha_cpu_type_info); type_register_static(&ev4_cpu_type_info); type_register_static(&ev5_cpu_type_info); type_register_static(&ev56_cpu_type_info); type_register_static(&pca56_cpu_type_info); type_register_static(&ev6_cpu_type_info); type_register_static(&ev67_cpu_type_info); type_register_static(&ev68_cpu_type_info); } type_init(alpha_cpu_register_types)