--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/symbian-qemu-0.9.1-12/qemu-symbian-svp/hw/apic.c Fri Jul 31 15:01:17 2009 +0100
@@ -0,0 +1,1118 @@
+/*
+ * APIC support
+ *
+ * Copyright (c) 2004-2005 Fabrice Bellard
+ *
+ * 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 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include "hw.h"
+#include "pc.h"
+#include "qemu-timer.h"
+#include "host-utils.h"
+
+//#define DEBUG_APIC
+//#define DEBUG_IOAPIC
+
+/* APIC Local Vector Table */
+#define APIC_LVT_TIMER 0
+#define APIC_LVT_THERMAL 1
+#define APIC_LVT_PERFORM 2
+#define APIC_LVT_LINT0 3
+#define APIC_LVT_LINT1 4
+#define APIC_LVT_ERROR 5
+#define APIC_LVT_NB 6
+
+/* APIC delivery modes */
+#define APIC_DM_FIXED 0
+#define APIC_DM_LOWPRI 1
+#define APIC_DM_SMI 2
+#define APIC_DM_NMI 4
+#define APIC_DM_INIT 5
+#define APIC_DM_SIPI 6
+#define APIC_DM_EXTINT 7
+
+/* APIC destination mode */
+#define APIC_DESTMODE_FLAT 0xf
+#define APIC_DESTMODE_CLUSTER 1
+
+#define APIC_TRIGGER_EDGE 0
+#define APIC_TRIGGER_LEVEL 1
+
+#define APIC_LVT_TIMER_PERIODIC (1<<17)
+#define APIC_LVT_MASKED (1<<16)
+#define APIC_LVT_LEVEL_TRIGGER (1<<15)
+#define APIC_LVT_REMOTE_IRR (1<<14)
+#define APIC_INPUT_POLARITY (1<<13)
+#define APIC_SEND_PENDING (1<<12)
+
+#define IOAPIC_NUM_PINS 0x18
+
+#define ESR_ILLEGAL_ADDRESS (1 << 7)
+
+#define APIC_SV_ENABLE (1 << 8)
+
+#define MAX_APICS 255
+#define MAX_APIC_WORDS 8
+
+typedef struct APICState {
+ CPUState *cpu_env;
+ uint32_t apicbase;
+ uint8_t id;
+ uint8_t arb_id;
+ uint8_t tpr;
+ uint32_t spurious_vec;
+ uint8_t log_dest;
+ uint8_t dest_mode;
+ uint32_t isr[8]; /* in service register */
+ uint32_t tmr[8]; /* trigger mode register */
+ uint32_t irr[8]; /* interrupt request register */
+ uint32_t lvt[APIC_LVT_NB];
+ uint32_t esr; /* error register */
+ uint32_t icr[2];
+
+ uint32_t divide_conf;
+ int count_shift;
+ uint32_t initial_count;
+ int64_t initial_count_load_time, next_time;
+ QEMUTimer *timer;
+} APICState;
+
+struct IOAPICState {
+ uint8_t id;
+ uint8_t ioregsel;
+
+ uint32_t irr;
+ uint64_t ioredtbl[IOAPIC_NUM_PINS];
+};
+
+static int apic_io_memory;
+static APICState *local_apics[MAX_APICS + 1];
+static int last_apic_id = 0;
+
+static void apic_init_ipi(APICState *s);
+static void apic_set_irq(APICState *s, int vector_num, int trigger_mode);
+static void apic_update_irq(APICState *s);
+
+/* Find first bit starting from msb */
+static int fls_bit(uint32_t value)
+{
+ return 31 - clz32(value);
+}
+
+/* Find first bit starting from lsb */
+static int ffs_bit(uint32_t value)
+{
+ return ctz32(value);
+}
+
+static inline void set_bit(uint32_t *tab, int index)
+{
+ int i, mask;
+ i = index >> 5;
+ mask = 1 << (index & 0x1f);
+ tab[i] |= mask;
+}
+
+static inline void reset_bit(uint32_t *tab, int index)
+{
+ int i, mask;
+ i = index >> 5;
+ mask = 1 << (index & 0x1f);
+ tab[i] &= ~mask;
+}
+
+static void apic_local_deliver(CPUState *env, int vector)
+{
+ APICState *s = env->apic_state;
+ uint32_t lvt = s->lvt[vector];
+ int trigger_mode;
+
+ if (lvt & APIC_LVT_MASKED)
+ return;
+
+ switch ((lvt >> 8) & 7) {
+ case APIC_DM_SMI:
+ cpu_interrupt(env, CPU_INTERRUPT_SMI);
+ break;
+
+ case APIC_DM_NMI:
+ cpu_interrupt(env, CPU_INTERRUPT_NMI);
+ break;
+
+ case APIC_DM_EXTINT:
+ cpu_interrupt(env, CPU_INTERRUPT_HARD);
+ break;
+
+ case APIC_DM_FIXED:
+ trigger_mode = APIC_TRIGGER_EDGE;
+ if ((vector == APIC_LVT_LINT0 || vector == APIC_LVT_LINT1) &&
+ (lvt & APIC_LVT_LEVEL_TRIGGER))
+ trigger_mode = APIC_TRIGGER_LEVEL;
+ apic_set_irq(s, lvt & 0xff, trigger_mode);
+ }
+}
+
+void apic_deliver_pic_intr(CPUState *env, int level)
+{
+ if (level)
+ apic_local_deliver(env, APIC_LVT_LINT0);
+ else {
+ APICState *s = env->apic_state;
+ uint32_t lvt = s->lvt[APIC_LVT_LINT0];
+
+ switch ((lvt >> 8) & 7) {
+ case APIC_DM_FIXED:
+ if (!(lvt & APIC_LVT_LEVEL_TRIGGER))
+ break;
+ reset_bit(s->irr, lvt & 0xff);
+ /* fall through */
+ case APIC_DM_EXTINT:
+ cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
+ break;
+ }
+ }
+}
+
+#define foreach_apic(apic, deliver_bitmask, code) \
+{\
+ int __i, __j, __mask;\
+ for(__i = 0; __i < MAX_APIC_WORDS; __i++) {\
+ __mask = deliver_bitmask[__i];\
+ if (__mask) {\
+ for(__j = 0; __j < 32; __j++) {\
+ if (__mask & (1 << __j)) {\
+ apic = local_apics[__i * 32 + __j];\
+ if (apic) {\
+ code;\
+ }\
+ }\
+ }\
+ }\
+ }\
+}
+
+static void apic_bus_deliver(const uint32_t *deliver_bitmask,
+ uint8_t delivery_mode,
+ uint8_t vector_num, uint8_t polarity,
+ uint8_t trigger_mode)
+{
+ APICState *apic_iter;
+
+ switch (delivery_mode) {
+ case APIC_DM_LOWPRI:
+ /* XXX: search for focus processor, arbitration */
+ {
+ int i, d;
+ d = -1;
+ for(i = 0; i < MAX_APIC_WORDS; i++) {
+ if (deliver_bitmask[i]) {
+ d = i * 32 + ffs_bit(deliver_bitmask[i]);
+ break;
+ }
+ }
+ if (d >= 0) {
+ apic_iter = local_apics[d];
+ if (apic_iter) {
+ apic_set_irq(apic_iter, vector_num, trigger_mode);
+ }
+ }
+ }
+ return;
+
+ case APIC_DM_FIXED:
+ break;
+
+ case APIC_DM_SMI:
+ foreach_apic(apic_iter, deliver_bitmask,
+ cpu_interrupt(apic_iter->cpu_env, CPU_INTERRUPT_SMI) );
+ return;
+
+ case APIC_DM_NMI:
+ foreach_apic(apic_iter, deliver_bitmask,
+ cpu_interrupt(apic_iter->cpu_env, CPU_INTERRUPT_NMI) );
+ return;
+
+ case APIC_DM_INIT:
+ /* normal INIT IPI sent to processors */
+ foreach_apic(apic_iter, deliver_bitmask,
+ apic_init_ipi(apic_iter) );
+ return;
+
+ case APIC_DM_EXTINT:
+ /* handled in I/O APIC code */
+ break;
+
+ default:
+ return;
+ }
+
+ foreach_apic(apic_iter, deliver_bitmask,
+ apic_set_irq(apic_iter, vector_num, trigger_mode) );
+}
+
+void cpu_set_apic_base(CPUState *env, uint64_t val)
+{
+ APICState *s = env->apic_state;
+#ifdef DEBUG_APIC
+ printf("cpu_set_apic_base: %016" PRIx64 "\n", val);
+#endif
+ s->apicbase = (val & 0xfffff000) |
+ (s->apicbase & (MSR_IA32_APICBASE_BSP | MSR_IA32_APICBASE_ENABLE));
+ /* if disabled, cannot be enabled again */
+ if (!(val & MSR_IA32_APICBASE_ENABLE)) {
+ s->apicbase &= ~MSR_IA32_APICBASE_ENABLE;
+ env->cpuid_features &= ~CPUID_APIC;
+ s->spurious_vec &= ~APIC_SV_ENABLE;
+ }
+}
+
+uint64_t cpu_get_apic_base(CPUState *env)
+{
+ APICState *s = env->apic_state;
+#ifdef DEBUG_APIC
+ printf("cpu_get_apic_base: %016" PRIx64 "\n", (uint64_t)s->apicbase);
+#endif
+ return s->apicbase;
+}
+
+void cpu_set_apic_tpr(CPUX86State *env, uint8_t val)
+{
+ APICState *s = env->apic_state;
+ s->tpr = (val & 0x0f) << 4;
+ apic_update_irq(s);
+}
+
+uint8_t cpu_get_apic_tpr(CPUX86State *env)
+{
+ APICState *s = env->apic_state;
+ return s->tpr >> 4;
+}
+
+/* return -1 if no bit is set */
+static int get_highest_priority_int(uint32_t *tab)
+{
+ int i;
+ for(i = 7; i >= 0; i--) {
+ if (tab[i] != 0) {
+ return i * 32 + fls_bit(tab[i]);
+ }
+ }
+ return -1;
+}
+
+static int apic_get_ppr(APICState *s)
+{
+ int tpr, isrv, ppr;
+
+ tpr = (s->tpr >> 4);
+ isrv = get_highest_priority_int(s->isr);
+ if (isrv < 0)
+ isrv = 0;
+ isrv >>= 4;
+ if (tpr >= isrv)
+ ppr = s->tpr;
+ else
+ ppr = isrv << 4;
+ return ppr;
+}
+
+static int apic_get_arb_pri(APICState *s)
+{
+ /* XXX: arbitration */
+ return 0;
+}
+
+/* signal the CPU if an irq is pending */
+static void apic_update_irq(APICState *s)
+{
+ int irrv, ppr;
+ if (!(s->spurious_vec & APIC_SV_ENABLE))
+ return;
+ irrv = get_highest_priority_int(s->irr);
+ if (irrv < 0)
+ return;
+ ppr = apic_get_ppr(s);
+ if (ppr && (irrv & 0xf0) <= (ppr & 0xf0))
+ return;
+ cpu_interrupt(s->cpu_env, CPU_INTERRUPT_HARD);
+}
+
+static void apic_set_irq(APICState *s, int vector_num, int trigger_mode)
+{
+ set_bit(s->irr, vector_num);
+ if (trigger_mode)
+ set_bit(s->tmr, vector_num);
+ else
+ reset_bit(s->tmr, vector_num);
+ apic_update_irq(s);
+}
+
+static void apic_eoi(APICState *s)
+{
+ int isrv;
+ isrv = get_highest_priority_int(s->isr);
+ if (isrv < 0)
+ return;
+ reset_bit(s->isr, isrv);
+ /* XXX: send the EOI packet to the APIC bus to allow the I/O APIC to
+ set the remote IRR bit for level triggered interrupts. */
+ apic_update_irq(s);
+}
+
+static void apic_get_delivery_bitmask(uint32_t *deliver_bitmask,
+ uint8_t dest, uint8_t dest_mode)
+{
+ APICState *apic_iter;
+ int i;
+
+ if (dest_mode == 0) {
+ if (dest == 0xff) {
+ memset(deliver_bitmask, 0xff, MAX_APIC_WORDS * sizeof(uint32_t));
+ } else {
+ memset(deliver_bitmask, 0x00, MAX_APIC_WORDS * sizeof(uint32_t));
+ set_bit(deliver_bitmask, dest);
+ }
+ } else {
+ /* XXX: cluster mode */
+ memset(deliver_bitmask, 0x00, MAX_APIC_WORDS * sizeof(uint32_t));
+ for(i = 0; i < MAX_APICS; i++) {
+ apic_iter = local_apics[i];
+ if (apic_iter) {
+ if (apic_iter->dest_mode == 0xf) {
+ if (dest & apic_iter->log_dest)
+ set_bit(deliver_bitmask, i);
+ } else if (apic_iter->dest_mode == 0x0) {
+ if ((dest & 0xf0) == (apic_iter->log_dest & 0xf0) &&
+ (dest & apic_iter->log_dest & 0x0f)) {
+ set_bit(deliver_bitmask, i);
+ }
+ }
+ }
+ }
+ }
+}
+
+
+static void apic_init_ipi(APICState *s)
+{
+ int i;
+
+ s->tpr = 0;
+ s->spurious_vec = 0xff;
+ s->log_dest = 0;
+ s->dest_mode = 0xf;
+ memset(s->isr, 0, sizeof(s->isr));
+ memset(s->tmr, 0, sizeof(s->tmr));
+ memset(s->irr, 0, sizeof(s->irr));
+ for(i = 0; i < APIC_LVT_NB; i++)
+ s->lvt[i] = 1 << 16; /* mask LVT */
+ s->esr = 0;
+ memset(s->icr, 0, sizeof(s->icr));
+ s->divide_conf = 0;
+ s->count_shift = 0;
+ s->initial_count = 0;
+ s->initial_count_load_time = 0;
+ s->next_time = 0;
+
+ cpu_reset(s->cpu_env);
+
+ if (!(s->apicbase & MSR_IA32_APICBASE_BSP))
+ s->cpu_env->halted = 1;
+}
+
+/* send a SIPI message to the CPU to start it */
+static void apic_startup(APICState *s, int vector_num)
+{
+ CPUState *env = s->cpu_env;
+ if (!env->halted)
+ return;
+ env->eip = 0;
+ cpu_x86_load_seg_cache(env, R_CS, vector_num << 8, vector_num << 12,
+ 0xffff, 0);
+ env->halted = 0;
+}
+
+static void apic_deliver(APICState *s, uint8_t dest, uint8_t dest_mode,
+ uint8_t delivery_mode, uint8_t vector_num,
+ uint8_t polarity, uint8_t trigger_mode)
+{
+ uint32_t deliver_bitmask[MAX_APIC_WORDS];
+ int dest_shorthand = (s->icr[0] >> 18) & 3;
+ APICState *apic_iter;
+
+ switch (dest_shorthand) {
+ case 0:
+ apic_get_delivery_bitmask(deliver_bitmask, dest, dest_mode);
+ break;
+ case 1:
+ memset(deliver_bitmask, 0x00, sizeof(deliver_bitmask));
+ set_bit(deliver_bitmask, s->id);
+ break;
+ case 2:
+ memset(deliver_bitmask, 0xff, sizeof(deliver_bitmask));
+ break;
+ case 3:
+ memset(deliver_bitmask, 0xff, sizeof(deliver_bitmask));
+ reset_bit(deliver_bitmask, s->id);
+ break;
+ }
+
+ switch (delivery_mode) {
+ case APIC_DM_INIT:
+ {
+ int trig_mode = (s->icr[0] >> 15) & 1;
+ int level = (s->icr[0] >> 14) & 1;
+ if (level == 0 && trig_mode == 1) {
+ foreach_apic(apic_iter, deliver_bitmask,
+ apic_iter->arb_id = apic_iter->id );
+ return;
+ }
+ }
+ break;
+
+ case APIC_DM_SIPI:
+ foreach_apic(apic_iter, deliver_bitmask,
+ apic_startup(apic_iter, vector_num) );
+ return;
+ }
+
+ apic_bus_deliver(deliver_bitmask, delivery_mode, vector_num, polarity,
+ trigger_mode);
+}
+
+int apic_get_interrupt(CPUState *env)
+{
+ APICState *s = env->apic_state;
+ int intno;
+
+ /* if the APIC is installed or enabled, we let the 8259 handle the
+ IRQs */
+ if (!s)
+ return -1;
+ if (!(s->spurious_vec & APIC_SV_ENABLE))
+ return -1;
+
+ /* XXX: spurious IRQ handling */
+ intno = get_highest_priority_int(s->irr);
+ if (intno < 0)
+ return -1;
+ if (s->tpr && intno <= s->tpr)
+ return s->spurious_vec & 0xff;
+ reset_bit(s->irr, intno);
+ set_bit(s->isr, intno);
+ apic_update_irq(s);
+ return intno;
+}
+
+int apic_accept_pic_intr(CPUState *env)
+{
+ APICState *s = env->apic_state;
+ uint32_t lvt0;
+
+ if (!s)
+ return -1;
+
+ lvt0 = s->lvt[APIC_LVT_LINT0];
+
+ if ((s->apicbase & MSR_IA32_APICBASE_ENABLE) == 0 ||
+ (lvt0 & APIC_LVT_MASKED) == 0)
+ return 1;
+
+ return 0;
+}
+
+static uint32_t apic_get_current_count(APICState *s)
+{
+ int64_t d;
+ uint32_t val;
+ d = (qemu_get_clock(vm_clock) - s->initial_count_load_time) >>
+ s->count_shift;
+ if (s->lvt[APIC_LVT_TIMER] & APIC_LVT_TIMER_PERIODIC) {
+ /* periodic */
+ val = s->initial_count - (d % ((uint64_t)s->initial_count + 1));
+ } else {
+ if (d >= s->initial_count)
+ val = 0;
+ else
+ val = s->initial_count - d;
+ }
+ return val;
+}
+
+static void apic_timer_update(APICState *s, int64_t current_time)
+{
+ int64_t next_time, d;
+
+ if (!(s->lvt[APIC_LVT_TIMER] & APIC_LVT_MASKED)) {
+ d = (current_time - s->initial_count_load_time) >>
+ s->count_shift;
+ if (s->lvt[APIC_LVT_TIMER] & APIC_LVT_TIMER_PERIODIC) {
+ if (!s->initial_count)
+ goto no_timer;
+ d = ((d / ((uint64_t)s->initial_count + 1)) + 1) * ((uint64_t)s->initial_count + 1);
+ } else {
+ if (d >= s->initial_count)
+ goto no_timer;
+ d = (uint64_t)s->initial_count + 1;
+ }
+ next_time = s->initial_count_load_time + (d << s->count_shift);
+ qemu_mod_timer(s->timer, next_time);
+ s->next_time = next_time;
+ } else {
+ no_timer:
+ qemu_del_timer(s->timer);
+ }
+}
+
+static void apic_timer(void *opaque)
+{
+ APICState *s = opaque;
+
+ apic_local_deliver(s->cpu_env, APIC_LVT_TIMER);
+ apic_timer_update(s, s->next_time);
+}
+
+static uint32_t apic_mem_readb(void *opaque, target_phys_addr_t addr)
+{
+ return 0;
+}
+
+static uint32_t apic_mem_readw(void *opaque, target_phys_addr_t addr)
+{
+ return 0;
+}
+
+static void apic_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
+{
+}
+
+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)
+ return 0;
+ s = env->apic_state;
+
+ index = (addr >> 4) & 0xff;
+ switch(index) {
+ case 0x02: /* id */
+ val = s->id << 24;
+ break;
+ case 0x03: /* version */
+ val = 0x11 | ((APIC_LVT_NB - 1) << 16); /* version 0x11 */
+ break;
+ case 0x08:
+ val = s->tpr;
+ break;
+ case 0x09:
+ val = apic_get_arb_pri(s);
+ break;
+ case 0x0a:
+ /* ppr */
+ val = apic_get_ppr(s);
+ break;
+ case 0x0b:
+ val = 0;
+ break;
+ case 0x0d:
+ val = s->log_dest << 24;
+ break;
+ case 0x0e:
+ val = s->dest_mode << 28;
+ break;
+ case 0x0f:
+ val = s->spurious_vec;
+ break;
+ case 0x10 ... 0x17:
+ val = s->isr[index & 7];
+ break;
+ case 0x18 ... 0x1f:
+ val = s->tmr[index & 7];
+ break;
+ case 0x20 ... 0x27:
+ val = s->irr[index & 7];
+ break;
+ case 0x28:
+ val = s->esr;
+ break;
+ case 0x30:
+ case 0x31:
+ val = s->icr[index & 1];
+ break;
+ case 0x32 ... 0x37:
+ val = s->lvt[index - 0x32];
+ break;
+ case 0x38:
+ val = s->initial_count;
+ break;
+ case 0x39:
+ val = apic_get_current_count(s);
+ break;
+ case 0x3e:
+ val = s->divide_conf;
+ break;
+ default:
+ s->esr |= ESR_ILLEGAL_ADDRESS;
+ val = 0;
+ break;
+ }
+#ifdef DEBUG_APIC
+ printf("APIC read: %08x = %08x\n", (uint32_t)addr, val);
+#endif
+ return val;
+}
+
+static void apic_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
+{
+ CPUState *env;
+ APICState *s;
+ int index;
+
+ env = cpu_single_env;
+ if (!env)
+ return;
+ s = env->apic_state;
+
+#ifdef DEBUG_APIC
+ printf("APIC write: %08x = %08x\n", (uint32_t)addr, val);
+#endif
+
+ index = (addr >> 4) & 0xff;
+ switch(index) {
+ case 0x02:
+ s->id = (val >> 24);
+ break;
+ case 0x03:
+ break;
+ case 0x08:
+ s->tpr = val;
+ apic_update_irq(s);
+ break;
+ case 0x09:
+ case 0x0a:
+ break;
+ case 0x0b: /* EOI */
+ apic_eoi(s);
+ break;
+ case 0x0d:
+ s->log_dest = val >> 24;
+ break;
+ case 0x0e:
+ s->dest_mode = val >> 28;
+ break;
+ case 0x0f:
+ s->spurious_vec = val & 0x1ff;
+ apic_update_irq(s);
+ break;
+ case 0x10 ... 0x17:
+ case 0x18 ... 0x1f:
+ case 0x20 ... 0x27:
+ case 0x28:
+ break;
+ case 0x30:
+ s->icr[0] = val;
+ apic_deliver(s, (s->icr[1] >> 24) & 0xff, (s->icr[0] >> 11) & 1,
+ (s->icr[0] >> 8) & 7, (s->icr[0] & 0xff),
+ (s->icr[0] >> 14) & 1, (s->icr[0] >> 15) & 1);
+ break;
+ case 0x31:
+ s->icr[1] = val;
+ break;
+ case 0x32 ... 0x37:
+ {
+ int n = index - 0x32;
+ s->lvt[n] = val;
+ if (n == APIC_LVT_TIMER)
+ apic_timer_update(s, qemu_get_clock(vm_clock));
+ }
+ break;
+ case 0x38:
+ s->initial_count = val;
+ s->initial_count_load_time = qemu_get_clock(vm_clock);
+ apic_timer_update(s, s->initial_count_load_time);
+ break;
+ case 0x39:
+ break;
+ case 0x3e:
+ {
+ int v;
+ s->divide_conf = val & 0xb;
+ v = (s->divide_conf & 3) | ((s->divide_conf >> 1) & 4);
+ s->count_shift = (v + 1) & 7;
+ }
+ break;
+ default:
+ s->esr |= ESR_ILLEGAL_ADDRESS;
+ break;
+ }
+}
+
+static void apic_save(QEMUFile *f, void *opaque)
+{
+ APICState *s = opaque;
+ int i;
+
+ qemu_put_be32s(f, &s->apicbase);
+ qemu_put_8s(f, &s->id);
+ qemu_put_8s(f, &s->arb_id);
+ qemu_put_8s(f, &s->tpr);
+ qemu_put_be32s(f, &s->spurious_vec);
+ qemu_put_8s(f, &s->log_dest);
+ qemu_put_8s(f, &s->dest_mode);
+ for (i = 0; i < 8; i++) {
+ qemu_put_be32s(f, &s->isr[i]);
+ qemu_put_be32s(f, &s->tmr[i]);
+ qemu_put_be32s(f, &s->irr[i]);
+ }
+ for (i = 0; i < APIC_LVT_NB; i++) {
+ qemu_put_be32s(f, &s->lvt[i]);
+ }
+ qemu_put_be32s(f, &s->esr);
+ qemu_put_be32s(f, &s->icr[0]);
+ qemu_put_be32s(f, &s->icr[1]);
+ qemu_put_be32s(f, &s->divide_conf);
+ qemu_put_be32(f, s->count_shift);
+ qemu_put_be32s(f, &s->initial_count);
+ qemu_put_be64(f, s->initial_count_load_time);
+ qemu_put_be64(f, s->next_time);
+
+ qemu_put_timer(f, s->timer);
+}
+
+static int apic_load(QEMUFile *f, void *opaque, int version_id)
+{
+ APICState *s = opaque;
+ int i;
+
+ if (version_id > 2)
+ return -EINVAL;
+
+ /* XXX: what if the base changes? (registered memory regions) */
+ qemu_get_be32s(f, &s->apicbase);
+ qemu_get_8s(f, &s->id);
+ qemu_get_8s(f, &s->arb_id);
+ qemu_get_8s(f, &s->tpr);
+ qemu_get_be32s(f, &s->spurious_vec);
+ qemu_get_8s(f, &s->log_dest);
+ qemu_get_8s(f, &s->dest_mode);
+ for (i = 0; i < 8; i++) {
+ qemu_get_be32s(f, &s->isr[i]);
+ qemu_get_be32s(f, &s->tmr[i]);
+ qemu_get_be32s(f, &s->irr[i]);
+ }
+ for (i = 0; i < APIC_LVT_NB; i++) {
+ qemu_get_be32s(f, &s->lvt[i]);
+ }
+ qemu_get_be32s(f, &s->esr);
+ qemu_get_be32s(f, &s->icr[0]);
+ qemu_get_be32s(f, &s->icr[1]);
+ qemu_get_be32s(f, &s->divide_conf);
+ s->count_shift=qemu_get_be32(f);
+ qemu_get_be32s(f, &s->initial_count);
+ s->initial_count_load_time=qemu_get_be64(f);
+ s->next_time=qemu_get_be64(f);
+
+ if (version_id >= 2)
+ qemu_get_timer(f, s->timer);
+ return 0;
+}
+
+static void apic_reset(void *opaque)
+{
+ APICState *s = opaque;
+
+ s->apicbase = 0xfee00000 |
+ (s->id ? 0 : MSR_IA32_APICBASE_BSP) | MSR_IA32_APICBASE_ENABLE;
+
+ apic_init_ipi(s);
+
+ if (s->id == 0) {
+ /*
+ * LINT0 delivery mode on CPU #0 is set to ExtInt at initialization
+ * time typically by BIOS, so PIC interrupt can be delivered to the
+ * processor when local APIC is enabled.
+ */
+ s->lvt[APIC_LVT_LINT0] = 0x700;
+ }
+}
+
+static CPUReadMemoryFunc *apic_mem_read[3] = {
+ apic_mem_readb,
+ apic_mem_readw,
+ apic_mem_readl,
+};
+
+static CPUWriteMemoryFunc *apic_mem_write[3] = {
+ apic_mem_writeb,
+ apic_mem_writew,
+ apic_mem_writel,
+};
+
+int apic_init(CPUState *env)
+{
+ APICState *s;
+
+ if (last_apic_id >= MAX_APICS)
+ return -1;
+ s = qemu_mallocz(sizeof(APICState));
+ if (!s)
+ return -1;
+ env->apic_state = s;
+ s->id = last_apic_id++;
+ env->cpuid_apic_id = s->id;
+ s->cpu_env = env;
+
+ apic_reset(s);
+
+ /* XXX: mapping more APICs at the same memory location */
+ if (apic_io_memory == 0) {
+ /* NOTE: the APIC is directly connected to the CPU - it is not
+ on the global memory bus. */
+ apic_io_memory = cpu_register_io_memory(0, apic_mem_read,
+ apic_mem_write, NULL);
+ cpu_register_physical_memory(s->apicbase & ~0xfff, 0x1000,
+ apic_io_memory);
+ }
+ s->timer = qemu_new_timer(vm_clock, apic_timer, s);
+
+ register_savevm("apic", s->id, 2, apic_save, apic_load, s);
+ qemu_register_reset(apic_reset, s);
+
+ local_apics[s->id] = s;
+ return 0;
+}
+
+static void ioapic_service(IOAPICState *s)
+{
+ uint8_t i;
+ uint8_t trig_mode;
+ uint8_t vector;
+ uint8_t delivery_mode;
+ uint32_t mask;
+ uint64_t entry;
+ uint8_t dest;
+ uint8_t dest_mode;
+ uint8_t polarity;
+ uint32_t deliver_bitmask[MAX_APIC_WORDS];
+
+ for (i = 0; i < IOAPIC_NUM_PINS; i++) {
+ mask = 1 << i;
+ if (s->irr & mask) {
+ entry = s->ioredtbl[i];
+ if (!(entry & APIC_LVT_MASKED)) {
+ trig_mode = ((entry >> 15) & 1);
+ dest = entry >> 56;
+ dest_mode = (entry >> 11) & 1;
+ delivery_mode = (entry >> 8) & 7;
+ polarity = (entry >> 13) & 1;
+ if (trig_mode == APIC_TRIGGER_EDGE)
+ s->irr &= ~mask;
+ if (delivery_mode == APIC_DM_EXTINT)
+ vector = pic_read_irq(isa_pic);
+ else
+ vector = entry & 0xff;
+
+ apic_get_delivery_bitmask(deliver_bitmask, dest, dest_mode);
+ apic_bus_deliver(deliver_bitmask, delivery_mode,
+ vector, polarity, trig_mode);
+ }
+ }
+ }
+}
+
+void ioapic_set_irq(void *opaque, int vector, int level)
+{
+ IOAPICState *s = opaque;
+
+ /* ISA IRQs map to GSI 1-1 except for IRQ0 which maps
+ * to GSI 2. GSI maps to ioapic 1-1. This is not
+ * the cleanest way of doing it but it should work. */
+
+ if (vector == 0)
+ vector = 2;
+
+ if (vector >= 0 && vector < IOAPIC_NUM_PINS) {
+ uint32_t mask = 1 << vector;
+ uint64_t entry = s->ioredtbl[vector];
+
+ if ((entry >> 15) & 1) {
+ /* level triggered */
+ if (level) {
+ s->irr |= mask;
+ ioapic_service(s);
+ } else {
+ s->irr &= ~mask;
+ }
+ } else {
+ /* edge triggered */
+ if (level) {
+ s->irr |= mask;
+ ioapic_service(s);
+ }
+ }
+ }
+}
+
+static uint32_t ioapic_mem_readl(void *opaque, target_phys_addr_t addr)
+{
+ IOAPICState *s = opaque;
+ int index;
+ uint32_t val = 0;
+
+ addr &= 0xff;
+ if (addr == 0x00) {
+ val = s->ioregsel;
+ } else if (addr == 0x10) {
+ switch (s->ioregsel) {
+ case 0x00:
+ val = s->id << 24;
+ break;
+ case 0x01:
+ val = 0x11 | ((IOAPIC_NUM_PINS - 1) << 16); /* version 0x11 */
+ break;
+ case 0x02:
+ val = 0;
+ break;
+ default:
+ index = (s->ioregsel - 0x10) >> 1;
+ if (index >= 0 && index < IOAPIC_NUM_PINS) {
+ if (s->ioregsel & 1)
+ val = s->ioredtbl[index] >> 32;
+ else
+ val = s->ioredtbl[index] & 0xffffffff;
+ }
+ }
+#ifdef DEBUG_IOAPIC
+ printf("I/O APIC read: %08x = %08x\n", s->ioregsel, val);
+#endif
+ }
+ return val;
+}
+
+static void ioapic_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
+{
+ IOAPICState *s = opaque;
+ int index;
+
+ addr &= 0xff;
+ if (addr == 0x00) {
+ s->ioregsel = val;
+ return;
+ } else if (addr == 0x10) {
+#ifdef DEBUG_IOAPIC
+ printf("I/O APIC write: %08x = %08x\n", s->ioregsel, val);
+#endif
+ switch (s->ioregsel) {
+ case 0x00:
+ s->id = (val >> 24) & 0xff;
+ return;
+ case 0x01:
+ case 0x02:
+ return;
+ default:
+ index = (s->ioregsel - 0x10) >> 1;
+ if (index >= 0 && index < IOAPIC_NUM_PINS) {
+ if (s->ioregsel & 1) {
+ s->ioredtbl[index] &= 0xffffffff;
+ s->ioredtbl[index] |= (uint64_t)val << 32;
+ } else {
+ s->ioredtbl[index] &= ~0xffffffffULL;
+ s->ioredtbl[index] |= val;
+ }
+ ioapic_service(s);
+ }
+ }
+ }
+}
+
+static void ioapic_save(QEMUFile *f, void *opaque)
+{
+ IOAPICState *s = opaque;
+ int i;
+
+ qemu_put_8s(f, &s->id);
+ qemu_put_8s(f, &s->ioregsel);
+ for (i = 0; i < IOAPIC_NUM_PINS; i++) {
+ qemu_put_be64s(f, &s->ioredtbl[i]);
+ }
+}
+
+static int ioapic_load(QEMUFile *f, void *opaque, int version_id)
+{
+ IOAPICState *s = opaque;
+ int i;
+
+ if (version_id != 1)
+ return -EINVAL;
+
+ qemu_get_8s(f, &s->id);
+ qemu_get_8s(f, &s->ioregsel);
+ for (i = 0; i < IOAPIC_NUM_PINS; i++) {
+ qemu_get_be64s(f, &s->ioredtbl[i]);
+ }
+ return 0;
+}
+
+static void ioapic_reset(void *opaque)
+{
+ IOAPICState *s = opaque;
+ int i;
+
+ memset(s, 0, sizeof(*s));
+ for(i = 0; i < IOAPIC_NUM_PINS; i++)
+ s->ioredtbl[i] = 1 << 16; /* mask LVT */
+}
+
+static CPUReadMemoryFunc *ioapic_mem_read[3] = {
+ ioapic_mem_readl,
+ ioapic_mem_readl,
+ ioapic_mem_readl,
+};
+
+static CPUWriteMemoryFunc *ioapic_mem_write[3] = {
+ ioapic_mem_writel,
+ ioapic_mem_writel,
+ ioapic_mem_writel,
+};
+
+IOAPICState *ioapic_init(void)
+{
+ IOAPICState *s;
+ int io_memory;
+
+ s = qemu_mallocz(sizeof(IOAPICState));
+ if (!s)
+ return NULL;
+ ioapic_reset(s);
+ s->id = last_apic_id++;
+
+ io_memory = cpu_register_io_memory(0, ioapic_mem_read,
+ ioapic_mem_write, s);
+ cpu_register_physical_memory(0xfec00000, 0x1000, io_memory);
+
+ register_savevm("ioapic", 0, 1, ioapic_save, ioapic_load, s);
+ qemu_register_reset(ioapic_reset, s);
+
+ return s;
+}