unicorn/qemu/hw/i386/pc.c
Eduardo Habkost fc39930347
target-i386: Move APIC ID compatibility code to pc.c
The APIC ID compatibility code is required only for PC, and now that
x86_cpu_initfn() doesn't use x86_cpu_apic_id_from_index() anymore, that
code can be moved to pc.c.

Backports commit de13197a38cf45c990802661a057f64a05426cbc from qemu
2018-02-12 15:59:20 -05:00

215 lines
5.3 KiB
C

/*
* QEMU PC System Emulator
*
* Copyright (c) 2003-2004 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
/* Modified for Unicorn Engine by Nguyen Anh Quynh, 2015 */
#include "hw/hw.h"
#include "hw/i386/pc.h"
#include "sysemu/cpus.h"
#include "sysemu/sysemu.h"
#include "target-i386/topology.h"
#include "qapi-visit.h"
/* XXX: add IGNNE support */
void cpu_set_ferr(CPUX86State *s)
{
// qemu_irq_raise(ferr_irq);
}
/* TSC handling */
uint64_t cpu_get_tsc(CPUX86State *env)
{
return cpu_get_ticks();
}
/* SMM support */
static cpu_set_smm_t smm_set;
static void *smm_arg;
void cpu_smm_register(cpu_set_smm_t callback, void *arg)
{
assert(smm_set == NULL);
assert(smm_arg == NULL);
smm_set = callback;
smm_arg = arg;
}
void cpu_smm_update(CPUX86State *env)
{
struct uc_struct *uc = x86_env_get_cpu(env)->parent_obj.uc;
if (smm_set && smm_arg && CPU(x86_env_get_cpu(env)) == uc->cpu) {
smm_set(!!(env->hflags & HF_SMM_MASK), smm_arg);
}
}
/* IRQ handling */
int cpu_get_pic_interrupt(CPUX86State *env)
{
X86CPU *cpu = x86_env_get_cpu(env);
int intno;
intno = apic_get_interrupt(cpu->apic_state);
if (intno >= 0) {
return intno;
}
/* read the irq from the PIC */
if (!apic_accept_pic_intr(cpu->apic_state)) {
return -1;
}
return 0;
}
DeviceState *cpu_get_current_apic(struct uc_struct *uc)
{
if (uc->current_cpu) {
X86CPU *cpu = X86_CPU(uc, uc->current_cpu);
return cpu->apic_state;
} else {
return NULL;
}
}
static X86CPU *pc_new_cpu(struct uc_struct *uc, const char *cpu_model, int64_t apic_id,
Error **errp)
{
X86CPU *cpu;
Error *local_err = NULL;
cpu = cpu_x86_create(uc, cpu_model, &local_err);
if (local_err != NULL) {
error_propagate(errp, local_err);
return NULL;
}
object_property_set_int(uc, OBJECT(cpu), apic_id, "apic-id", &local_err);
object_property_set_bool(uc, OBJECT(cpu), true, "realized", &local_err);
if (local_err) {
error_propagate(errp, local_err);
object_unref(uc, OBJECT(cpu));
cpu = NULL;
}
return cpu;
}
int pc_cpus_init(struct uc_struct *uc, const char *cpu_model)
{
int i;
Error *error = NULL;
/* init CPUs */
if (cpu_model == NULL) {
#ifdef TARGET_X86_64
cpu_model = "qemu64";
#else
cpu_model = "qemu32";
#endif
}
for (i = 0; i < smp_cpus; i++) {
uc->cpu = (CPUState *)pc_new_cpu(uc, cpu_model, x86_cpu_apic_id_from_index(i), &error);
if (error) {
//error_report("%s", error_get_pretty(error));
error_free(error);
return -1;
}
}
return 0;
}
static void pc_machine_initfn(struct uc_struct *uc, Object *obj, void *opaque)
{
}
static void pc_machine_class_init(struct uc_struct *uc, ObjectClass *oc, void *data)
{
}
static const TypeInfo pc_machine_info = {
TYPE_PC_MACHINE,
TYPE_MACHINE,
sizeof(PCMachineClass),
sizeof(PCMachineState),
NULL,
pc_machine_initfn,
NULL,
NULL,
NULL,
pc_machine_class_init,
NULL,
NULL,
true,
NULL,
NULL,
// should this be added somehow?
//.interfaces = (InterfaceInfo[]) { { } },
};
void pc_machine_register_types(struct uc_struct *uc)
{
type_register_static(uc, &pc_machine_info);
}
/* Enables contiguous-apic-ID mode, for compatibility */
static bool compat_apic_id_mode;
void enable_compat_apic_id_mode(void)
{
compat_apic_id_mode = true;
}
/* Calculates initial APIC ID for a specific CPU index
*
* Currently we need to be able to calculate the APIC ID from the CPU index
* alone (without requiring a CPU object), as the QEMU<->Seabios interfaces have
* no concept of "CPU index", and the NUMA tables on fw_cfg need the APIC ID of
* all CPUs up to max_cpus.
*/
uint32_t x86_cpu_apic_id_from_index(unsigned int cpu_index)
{
uint32_t correct_id;
correct_id = x86_apicid_from_cpu_idx(smp_cores, smp_threads, cpu_index);
if (compat_apic_id_mode) {
if (cpu_index != correct_id) {
//error_report("APIC IDs set in compatibility mode, "
// "CPU topology won't match the configuration");
}
return cpu_index;
} else {
return correct_id;
}
}