| 1 | /* |
| 2 | * x86 HVF CPU type initialization |
| 3 | * |
| 4 | * Copyright 2021 SUSE LLC |
| 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 | |
| 10 | #include "qemu/osdep.h" |
| 11 | #include "cpu.h" |
| 12 | #include "host-cpu.h" |
| 13 | #include "qapi/error.h" |
| 14 | #include "system/system.h" |
| 15 | #include "hw/core/boards.h" |
| 16 | #include "system/hvf.h" |
| 17 | #include "accel/accel-cpu-target.h" |
| 18 | #include "hvf-i386.h" |
| 19 | |
| 20 | static void hvf_cpu_max_instance_init(X86CPU *cpu) |
| 21 | { |
| 22 | CPUX86State *env = &cpu->env; |
| 23 | |
| 24 | env->cpuid_min_level = |
| 25 | hvf_get_supported_cpuid(0x0, 0, R_EAX); |
| 26 | env->cpuid_min_xlevel = |
| 27 | hvf_get_supported_cpuid(0x80000000, 0, R_EAX); |
| 28 | env->cpuid_min_xlevel2 = |
| 29 | hvf_get_supported_cpuid(0xC0000000, 0, R_EAX); |
| 30 | } |
| 31 | |
| 32 | static void hvf_cpu_xsave_init(void) |
| 33 | { |
| 34 | static bool first = true; |
| 35 | int i; |
| 36 | |
| 37 | if (!first) { |
| 38 | return; |
| 39 | } |
| 40 | first = false; |
| 41 | |
| 42 | /* x87 and SSE states are in the legacy region of the XSAVE area. */ |
| 43 | x86_ext_save_areas[XSTATE_FP_BIT].offset = 0; |
| 44 | x86_ext_save_areas[XSTATE_SSE_BIT].offset = 0; |
| 45 | |
| 46 | for (i = XSTATE_SSE_BIT + 1; i < XSAVE_STATE_AREA_COUNT; i++) { |
| 47 | ExtSaveArea *esa = &x86_ext_save_areas[i]; |
| 48 | |
| 49 | if (esa->size) { |
| 50 | int sz = hvf_get_supported_cpuid(0xd, i, R_EAX); |
| 51 | if (sz != 0) { |
| 52 | assert(esa->size == sz); |
| 53 | esa->offset = hvf_get_supported_cpuid(0xd, i, R_EBX); |
| 54 | } |
| 55 | } |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | static void hvf_cpu_instance_init(CPUState *cs) |
| 60 | { |
| 61 | X86CPU *cpu = X86_CPU(cs); |
| 62 | X86CPUClass *xcc = X86_CPU_GET_CLASS(cpu); |
| 63 | |
| 64 | host_cpu_instance_init(cpu); |
| 65 | |
| 66 | /* Special cases not set in the X86CPUDefinition structs: */ |
| 67 | /* TODO: in-kernel irqchip for hvf */ |
| 68 | |
| 69 | if (xcc->max_features) { |
| 70 | hvf_cpu_max_instance_init(cpu); |
| 71 | } |
| 72 | |
| 73 | hvf_cpu_xsave_init(); |
| 74 | } |
| 75 | |
| 76 | static void hvf_cpu_accel_class_init(ObjectClass *oc, const void *data) |
| 77 | { |
| 78 | AccelCPUClass *acc = ACCEL_CPU_CLASS(oc); |
| 79 | |
| 80 | acc->cpu_target_realize = host_cpu_realizefn; |
| 81 | acc->cpu_instance_init = hvf_cpu_instance_init; |
| 82 | } |
| 83 | |
| 84 | static const TypeInfo hvf_cpu_accel_type_info = { |
| 85 | .name = ACCEL_CPU_NAME("hvf"), |
| 86 | |
| 87 | .parent = TYPE_ACCEL_CPU, |
| 88 | .class_init = hvf_cpu_accel_class_init, |
| 89 | .abstract = true, |
| 90 | }; |
| 91 | |
| 92 | static void hvf_cpu_accel_register_types(void) |
| 93 | { |
| 94 | type_register_static(&hvf_cpu_accel_type_info); |
| 95 | } |
| 96 | |
| 97 | type_init(hvf_cpu_accel_register_types); |