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apic: avoid using CPUState internals 

Move the actual CPUState contents handling to cpu.h and cpuid.c.

Handle CPU reset and set env->halted in pc.c.

Add a function to get the local APIC state of the current
CPU for the MMIO.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Blue Swirl 2010-06-19 10:42:34 +03:00
parent 4a942ceac7
commit 0e26b7b892
5 changed files with 77 additions and 39 deletions
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39
hw/apic.c
View File

@ -320,7 +320,7 @@ void cpu_set_apic_base(APICState *s, uint64_t val)
/* if disabled, cannot be enabled again */
if (!(val & MSR_IA32_APICBASE_ENABLE)) {
s->apicbase &= ~MSR_IA32_APICBASE_ENABLE;
s->cpu_env->cpuid_features &= ~CPUID_APIC;
cpu_clear_apic_feature(s->cpu_env);
s->spurious_vec &= ~APIC_SV_ENABLE;
}
}
@ -508,8 +508,6 @@ void apic_init_reset(APICState *s)
s->initial_count_load_time = 0;
s->next_time = 0;
s->wait_for_sipi = 1;
s->cpu_env->halted = !(s->apicbase & MSR_IA32_APICBASE_BSP);
}
static void apic_startup(APICState *s, int vector_num)
@ -524,13 +522,7 @@ void apic_sipi(APICState *s)
if (!s->wait_for_sipi)
return;
s->cpu_env->eip = 0;
cpu_x86_load_seg_cache(s->cpu_env, R_CS, s->sipi_vector << 8,
s->sipi_vector << 12,
s->cpu_env->segs[R_CS].limit,
s->cpu_env->segs[R_CS].flags);
s->cpu_env->halted = 0;
cpu_x86_load_seg_cache_sipi(s->cpu_env, s->sipi_vector);
s->wait_for_sipi = 0;
}
@ -692,15 +684,14 @@ static void apic_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
static uint32_t apic_mem_readl(void *opaque, target_phys_addr_t addr)
{
CPUState *env;
APICState *s;
uint32_t val;
int index;
env = cpu_single_env;
if (!env)
s = cpu_get_current_apic();
if (!s) {
return 0;
s = env->apic_state;
}
index = (addr >> 4) & 0xff;
switch(index) {
@ -782,7 +773,6 @@ static void apic_send_msi(target_phys_addr_t addr, uint32 data)
static void apic_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
{
CPUState *env;
APICState *s;
int index = (addr >> 4) & 0xff;
if (addr > 0xfff || !index) {
@ -795,10 +785,10 @@ static void apic_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
return;
}
env = cpu_single_env;
if (!env)
s = cpu_get_current_apic();
if (!s) {
return;
s = env->apic_state;
}
DPRINTF("write: " TARGET_FMT_plx " = %08x\n", addr, val);
@ -949,7 +939,6 @@ static void apic_reset(void *opaque)
s->apicbase = 0xfee00000 |
(bsp ? MSR_IA32_APICBASE_BSP : 0) | MSR_IA32_APICBASE_ENABLE;
cpu_reset(s->cpu_env);
apic_init_reset(s);
if (bsp) {
@ -974,16 +963,16 @@ static CPUWriteMemoryFunc * const apic_mem_write[3] = {
apic_mem_writel,
};
int apic_init(CPUState *env)
APICState *apic_init(CPUState *env, uint32_t apic_id)
{
APICState *s;
if (last_apic_idx >= MAX_APICS)
return -1;
if (last_apic_idx >= MAX_APICS) {
return NULL;
}
s = qemu_mallocz(sizeof(APICState));
env->apic_state = s;
s->idx = last_apic_idx++;
s->id = env->cpuid_apic_id;
s->id = apic_id;
s->cpu_env = env;
msix_supported = 1;
@ -1004,5 +993,5 @@ int apic_init(CPUState *env)
qemu_register_reset(apic_reset, s);
local_apics[s->idx] = s;
return 0;
return s;
}

10
hw/apic.h
View File

@ -7,13 +7,21 @@ void apic_deliver_irq(uint8_t dest, uint8_t dest_mode,
uint8_t delivery_mode,
uint8_t vector_num, uint8_t polarity,
uint8_t trigger_mode);
int apic_init(CPUState *env);
APICState *apic_init(CPUState *env, uint32_t apic_id);
int apic_accept_pic_intr(APICState *s);
void apic_deliver_pic_intr(APICState *s, int level);
int apic_get_interrupt(APICState *s);
void apic_reset_irq_delivered(void);
int apic_get_irq_delivered(void);
void cpu_set_apic_base(APICState *s, uint64_t val);
uint64_t cpu_get_apic_base(APICState *s);
void cpu_set_apic_tpr(APICState *s, uint8_t val);
uint8_t cpu_get_apic_tpr(APICState *s);
void apic_init_reset(APICState *s);
void apic_sipi(APICState *s);
/* pc.c */
int cpu_is_bsp(CPUState *env);
APICState *cpu_get_current_apic(void);
#endif

34
hw/pc.c
View File

@ -754,6 +754,15 @@ int cpu_is_bsp(CPUState *env)
return env->cpu_index == 0;
}
APICState *cpu_get_current_apic(void)
{
if (cpu_single_env) {
return cpu_single_env->apic_state;
} else {
return NULL;
}
}
/* set CMOS shutdown status register (index 0xF) as S3_resume(0xFE)
BIOS will read it and start S3 resume at POST Entry */
void pc_cmos_set_s3_resume(void *opaque, int irq, int level)
@ -774,6 +783,22 @@ void pc_acpi_smi_interrupt(void *opaque, int irq, int level)
}
}
static void bsp_cpu_reset(void *opaque)
{
CPUState *env = opaque;
cpu_reset(env);
env->halted = 0;
}
static void ap_cpu_reset(void *opaque)
{
CPUState *env = opaque;
cpu_reset(env);
env->halted = 1;
}
static CPUState *pc_new_cpu(const char *cpu_model)
{
CPUState *env;
@ -786,9 +811,14 @@ static CPUState *pc_new_cpu(const char *cpu_model)
if ((env->cpuid_features & CPUID_APIC) || smp_cpus > 1) {
env->cpuid_apic_id = env->cpu_index;
/* APIC reset callback resets cpu */
apic_init(env);
env->apic_state = apic_init(env, env->cpuid_apic_id);
}
if (cpu_is_bsp(env)) {
qemu_register_reset(bsp_cpu_reset, env);
env->halted = 0;
} else {
qemu_register_reset((QEMUResetHandler*)cpu_reset, env);
qemu_register_reset(ap_cpu_reset, env);
env->halted = 1;
}
return env;
}

27
target-i386/cpu.h
View File

@ -790,6 +790,17 @@ static inline void cpu_x86_load_seg_cache(CPUX86State *env,
}
}
static inline void cpu_x86_load_seg_cache_sipi(CPUX86State *env,
int sipi_vector)
{
env->eip = 0;
cpu_x86_load_seg_cache(env, R_CS, sipi_vector << 8,
sipi_vector << 12,
env->segs[R_CS].limit,
env->segs[R_CS].flags);
env->halted = 0;
}
int cpu_x86_get_descr_debug(CPUX86State *env, unsigned int selector,
target_ulong *base, unsigned int *limit,
unsigned int *flags);
@ -827,6 +838,7 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
uint32_t *eax, uint32_t *ebx,
uint32_t *ecx, uint32_t *edx);
int cpu_x86_register (CPUX86State *env, const char *cpu_model);
void cpu_clear_apic_feature(CPUX86State *env);
/* helper.c */
int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
@ -859,15 +871,6 @@ void cpu_x86_update_cr0(CPUX86State *env, uint32_t new_cr0);
void cpu_x86_update_cr3(CPUX86State *env, target_ulong new_cr3);
void cpu_x86_update_cr4(CPUX86State *env, uint32_t new_cr4);
/* hw/apic.c */
typedef struct APICState APICState;
void cpu_set_apic_base(APICState *s, uint64_t val);
uint64_t cpu_get_apic_base(APICState *s);
void cpu_set_apic_tpr(APICState *s, uint8_t val);
#ifndef NO_CPU_IO_DEFS
uint8_t cpu_get_apic_tpr(APICState *s);
#endif
/* hw/pc.c */
void cpu_smm_update(CPUX86State *env);
uint64_t cpu_get_tsc(CPUX86State *env);
@ -929,6 +932,10 @@ static inline void cpu_clone_regs(CPUState *env, target_ulong newsp)
#include "svm.h"
#if !defined(CONFIG_USER_ONLY)
#include "hw/apic.h"
#endif
static inline void cpu_pc_from_tb(CPUState *env, TranslationBlock *tb)
{
env->eip = tb->pc - tb->cs_base;
@ -943,8 +950,6 @@ static inline void cpu_get_tb_cpu_state(CPUState *env, target_ulong *pc,
(env->eflags & (IOPL_MASK | TF_MASK | RF_MASK | VM_MASK));
}
void apic_init_reset(APICState *s);
void apic_sipi(APICState *s);
void do_cpu_init(CPUState *env);
void do_cpu_sipi(CPUState *env);
#endif /* CPU_I386_H */

6
target-i386/cpuid.c
View File

@ -944,6 +944,12 @@ static int cpudef_register(QemuOpts *opts, void *opaque)
x86_defs = def;
return (0);
}
void cpu_clear_apic_feature(CPUX86State *env)
{
env->cpuid_features &= ~CPUID_APIC;
}
#endif /* !CONFIG_USER_ONLY */
/* register "cpudef" models defined in configuration file. Here we first