/*
* APIC support
- *
+ *
* Copyright (c) 2004-2005 Fabrice Bellard
*
* This library is free software; you can redistribute it and/or
* 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
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>
*/
-#include "vl.h"
-
-//#define DEBUG_APIC
-//#define DEBUG_IOAPIC
+#include "hw.h"
+#include "apic.h"
+#include "ioapic.h"
+#include "qemu-timer.h"
+#include "host-utils.h"
+#include "sysbus.h"
+#include "trace.h"
+#include "pc.h"
/* APIC Local Vector Table */
#define APIC_LVT_TIMER 0
#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 APIC_SV_DIRECTED_IO (1<<12)
+#define APIC_SV_ENABLE (1<<8)
+
+#define MAX_APICS 255
+#define MAX_APIC_WORDS 8
+
+/* Intel APIC constants: from include/asm/msidef.h */
+#define MSI_DATA_VECTOR_SHIFT 0
+#define MSI_DATA_VECTOR_MASK 0x000000ff
+#define MSI_DATA_DELIVERY_MODE_SHIFT 8
+#define MSI_DATA_TRIGGER_SHIFT 15
+#define MSI_DATA_LEVEL_SHIFT 14
+#define MSI_ADDR_DEST_MODE_SHIFT 2
+#define MSI_ADDR_DEST_ID_SHIFT 12
+#define MSI_ADDR_DEST_ID_MASK 0x00ffff0
-typedef struct APICState {
- CPUState *cpu_env;
+#define MSI_ADDR_SIZE 0x100000
+
+typedef struct APICState APICState;
+
+struct APICState {
+ SysBusDevice busdev;
+ MemoryRegion io_memory;
+ void *cpu_env;
uint32_t apicbase;
uint8_t id;
uint8_t arb_id;
int count_shift;
uint32_t initial_count;
int64_t initial_count_load_time, next_time;
+ uint32_t idx;
QEMUTimer *timer;
-
- struct APICState *next_apic;
-} APICState;
-
-struct IOAPICState {
- uint8_t id;
- uint8_t ioregsel;
-
- uint32_t irr;
- uint64_t ioredtbl[IOAPIC_NUM_PINS];
+ int sipi_vector;
+ int wait_for_sipi;
};
-static int apic_io_memory;
-static APICState *first_local_apic = NULL;
-static int last_apic_id = 0;
+static APICState *local_apics[MAX_APICS + 1];
+static int apic_irq_delivered;
-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);
+static void apic_get_delivery_bitmask(uint32_t *deliver_bitmask,
+ uint8_t dest, uint8_t dest_mode);
+
+/* 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 inline int get_bit(uint32_t *tab, int index)
+{
+ int i, mask;
+ i = index >> 5;
+ mask = 1 << (index & 0x1f);
+ return !!(tab[i] & mask);
+}
+
+static void apic_local_deliver(APICState *s, int vector)
+{
+ uint32_t lvt = s->lvt[vector];
+ int trigger_mode;
+
+ trace_apic_local_deliver(vector, (lvt >> 8) & 7);
+
+ if (lvt & APIC_LVT_MASKED)
+ return;
+
+ switch ((lvt >> 8) & 7) {
+ case APIC_DM_SMI:
+ cpu_interrupt(s->cpu_env, CPU_INTERRUPT_SMI);
+ break;
+
+ case APIC_DM_NMI:
+ cpu_interrupt(s->cpu_env, CPU_INTERRUPT_NMI);
+ break;
+
+ case APIC_DM_EXTINT:
+ cpu_interrupt(s->cpu_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(DeviceState *d, int level)
+{
+ APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
+
+ if (level) {
+ apic_local_deliver(s, APIC_LVT_LINT0);
+ } else {
+ uint32_t lvt = s->lvt[APIC_LVT_LINT0];
-static void apic_bus_deliver(uint32_t deliver_bitmask, uint8_t delivery_mode,
- uint8_t vector_num, uint8_t polarity,
+ 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(s->cpu_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 trigger_mode)
{
APICState *apic_iter;
switch (delivery_mode) {
case APIC_DM_LOWPRI:
/* XXX: search for focus processor, arbitration */
- if (deliver_bitmask) {
- uint32_t m = 1;
- while ((deliver_bitmask & m) == 0)
- m <<= 1;
- deliver_bitmask = m;
+ {
+ 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);
+ }
+ }
}
- break;
+ 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:
- break;
+ 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 */
- for (apic_iter = first_local_apic; apic_iter != NULL;
- apic_iter = apic_iter->next_apic) {
- if (deliver_bitmask & (1 << apic_iter->id))
- apic_init_ipi(apic_iter);
- }
+ foreach_apic(apic_iter, deliver_bitmask,
+ cpu_interrupt(apic_iter->cpu_env, CPU_INTERRUPT_INIT) );
return;
-
+
case APIC_DM_EXTINT:
/* handled in I/O APIC code */
break;
return;
}
- for (apic_iter = first_local_apic; apic_iter != NULL;
- apic_iter = apic_iter->next_apic) {
- if (deliver_bitmask & (1 << apic_iter->id))
- apic_set_irq(apic_iter, vector_num, trigger_mode);
- }
+ foreach_apic(apic_iter, deliver_bitmask,
+ apic_set_irq(apic_iter, vector_num, trigger_mode) );
+}
+
+void apic_deliver_irq(uint8_t dest, uint8_t dest_mode, uint8_t delivery_mode,
+ uint8_t vector_num, uint8_t trigger_mode)
+{
+ uint32_t deliver_bitmask[MAX_APIC_WORDS];
+
+ trace_apic_deliver_irq(dest, dest_mode, delivery_mode, vector_num,
+ trigger_mode);
+
+ apic_get_delivery_bitmask(deliver_bitmask, dest, dest_mode);
+ apic_bus_deliver(deliver_bitmask, delivery_mode, vector_num, trigger_mode);
}
-void cpu_set_apic_base(CPUState *env, uint64_t val)
+void cpu_set_apic_base(DeviceState *d, uint64_t val)
{
- APICState *s = env->apic_state;
-#ifdef DEBUG_APIC
- printf("cpu_set_apic_base: %016llx\n", val);
-#endif
- s->apicbase = (val & 0xfffff000) |
+ APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
+
+ trace_cpu_set_apic_base(val);
+
+ if (!s)
+ return;
+ 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;
+ cpu_clear_apic_feature(s->cpu_env);
s->spurious_vec &= ~APIC_SV_ENABLE;
}
}
-uint64_t cpu_get_apic_base(CPUState *env)
+uint64_t cpu_get_apic_base(DeviceState *d)
{
- APICState *s = env->apic_state;
-#ifdef DEBUG_APIC
- printf("cpu_get_apic_base: %016llx\n", (uint64_t)s->apicbase);
-#endif
- return s->apicbase;
-}
+ APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
-void cpu_set_apic_tpr(CPUX86State *env, uint8_t val)
-{
- APICState *s = env->apic_state;
- s->tpr = (val & 0x0f) << 4;
- apic_update_irq(s);
-}
+ trace_cpu_get_apic_base(s ? (uint64_t)s->apicbase: 0);
-uint8_t cpu_get_apic_tpr(CPUX86State *env)
-{
- APICState *s = env->apic_state;
- return s->tpr >> 4;
+ return s ? s->apicbase : 0;
}
-static int fls_bit(int value)
+void cpu_set_apic_tpr(DeviceState *d, uint8_t val)
{
- unsigned int ret = 0;
+ APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
-#ifdef HOST_I386
- __asm__ __volatile__ ("bsr %1, %0\n" : "+r" (ret) : "rm" (value));
- return ret;
-#else
- if (value > 0xffff)
- value >>= 16, ret = 16;
- if (value > 0xff)
- value >>= 8, ret += 8;
- if (value > 0xf)
- value >>= 4, ret += 4;
- if (value > 0x3)
- value >>= 2, ret += 2;
- return ret + (value >> 1);
-#endif
+ if (!s)
+ return;
+ s->tpr = (val & 0x0f) << 4;
+ apic_update_irq(s);
}
-static inline void set_bit(uint32_t *tab, int index)
+uint8_t cpu_get_apic_tpr(DeviceState *d)
{
- int i, mask;
- i = index >> 5;
- mask = 1 << (index & 0x1f);
- tab[i] |= mask;
-}
+ APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
-static inline void reset_bit(uint32_t *tab, int index)
-{
- int i, mask;
- i = index >> 5;
- mask = 1 << (index & 0x1f);
- tab[i] &= ~mask;
+ return s ? s->tpr >> 4 : 0;
}
/* return -1 if no bit is set */
return 0;
}
-/* signal the CPU if an irq is pending */
-static void apic_update_irq(APICState *s)
+
+/*
+ * <0 - low prio interrupt,
+ * 0 - no interrupt,
+ * >0 - interrupt number
+ */
+static int apic_irq_pending(APICState *s)
{
int irrv, ppr;
- if (!(s->spurious_vec & APIC_SV_ENABLE))
- return;
irrv = get_highest_priority_int(s->irr);
- if (irrv < 0)
- return;
+ if (irrv < 0) {
+ return 0;
+ }
ppr = apic_get_ppr(s);
- if (ppr && (irrv & 0xf0) <= (ppr & 0xf0))
+ if (ppr && (irrv & 0xf0) <= (ppr & 0xf0)) {
+ return -1;
+ }
+
+ return irrv;
+}
+
+/* signal the CPU if an irq is pending */
+static void apic_update_irq(APICState *s)
+{
+ if (!(s->spurious_vec & APIC_SV_ENABLE)) {
return;
- cpu_interrupt(s->cpu_env, CPU_INTERRUPT_HARD);
+ }
+ if (apic_irq_pending(s) > 0) {
+ cpu_interrupt(s->cpu_env, CPU_INTERRUPT_HARD);
+ } else if (apic_accept_pic_intr(&s->busdev.qdev) &&
+ pic_get_output(isa_pic)) {
+ apic_deliver_pic_intr(&s->busdev.qdev, 1);
+ }
+}
+
+void apic_reset_irq_delivered(void)
+{
+ trace_apic_reset_irq_delivered(apic_irq_delivered);
+
+ apic_irq_delivered = 0;
+}
+
+int apic_get_irq_delivered(void)
+{
+ trace_apic_get_irq_delivered(apic_irq_delivered);
+
+ return apic_irq_delivered;
}
static void apic_set_irq(APICState *s, int vector_num, int trigger_mode)
{
+ apic_irq_delivered += !get_bit(s->irr, vector_num);
+
+ trace_apic_set_irq(apic_irq_delivered);
+
set_bit(s->irr, vector_num);
if (trigger_mode)
set_bit(s->tmr, vector_num);
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. */
+ if (!(s->spurious_vec & APIC_SV_DIRECTED_IO) && get_bit(s->tmr, isrv)) {
+ ioapic_eoi_broadcast(isrv);
+ }
apic_update_irq(s);
}
-static uint32_t apic_get_delivery_bitmask(uint8_t dest, uint8_t dest_mode)
+static int apic_find_dest(uint8_t dest)
+{
+ APICState *apic = local_apics[dest];
+ int i;
+
+ if (apic && apic->id == dest)
+ return dest; /* shortcut in case apic->id == apic->idx */
+
+ for (i = 0; i < MAX_APICS; i++) {
+ apic = local_apics[i];
+ if (apic && apic->id == dest)
+ return i;
+ if (!apic)
+ break;
+ }
+
+ return -1;
+}
+
+static void apic_get_delivery_bitmask(uint32_t *deliver_bitmask,
+ uint8_t dest, uint8_t dest_mode)
{
- uint32_t mask = 0;
APICState *apic_iter;
+ int i;
if (dest_mode == 0) {
- if (dest == 0xff)
- mask = 0xff;
- else
- mask = 1 << dest;
+ if (dest == 0xff) {
+ memset(deliver_bitmask, 0xff, MAX_APIC_WORDS * sizeof(uint32_t));
+ } else {
+ int idx = apic_find_dest(dest);
+ memset(deliver_bitmask, 0x00, MAX_APIC_WORDS * sizeof(uint32_t));
+ if (idx >= 0)
+ set_bit(deliver_bitmask, idx);
+ }
} else {
/* XXX: cluster mode */
- for (apic_iter = first_local_apic; apic_iter != NULL;
- apic_iter = apic_iter->next_apic) {
- if (dest & apic_iter->log_dest)
- mask |= (1 << apic_iter->id);
+ 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);
+ }
+ }
+ } else {
+ break;
+ }
}
}
-
- return mask;
}
-
-static void apic_init_ipi(APICState *s)
+void apic_init_reset(DeviceState *d)
{
+ APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
int i;
- for(i = 0; i < APIC_LVT_NB; i++)
- s->lvt[i] = 1 << 16; /* mask LVT */
+ if (!s)
+ return;
+
s->tpr = 0;
s->spurious_vec = 0xff;
s->log_dest = 0;
memset(s->isr, 0, sizeof(s->isr));
memset(s->tmr, 0, sizeof(s->tmr));
memset(s->irr, 0, sizeof(s->irr));
- memset(s->lvt, 0, sizeof(s->lvt));
+ 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->initial_count = 0;
s->initial_count_load_time = 0;
s->next_time = 0;
+ s->wait_for_sipi = 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->hflags & HF_HALTED_MASK))
+ s->sipi_vector = vector_num;
+ cpu_interrupt(s->cpu_env, CPU_INTERRUPT_SIPI);
+}
+
+void apic_sipi(DeviceState *d)
+{
+ APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
+
+ cpu_reset_interrupt(s->cpu_env, CPU_INTERRUPT_SIPI);
+
+ if (!s->wait_for_sipi)
return;
- env->eip = 0;
- cpu_x86_load_seg_cache(env, R_CS, vector_num << 8, vector_num << 12,
- 0xffff, 0);
- env->hflags &= ~HF_HALTED_MASK;
+ cpu_x86_load_seg_cache_sipi(s->cpu_env, s->sipi_vector);
+ s->wait_for_sipi = 0;
}
-static void apic_deliver(APICState *s, uint8_t dest, uint8_t dest_mode,
+static void apic_deliver(DeviceState *d, uint8_t dest, uint8_t dest_mode,
uint8_t delivery_mode, uint8_t vector_num,
- uint8_t polarity, uint8_t trigger_mode)
+ uint8_t trigger_mode)
{
- uint32_t deliver_bitmask = 0;
+ APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
+ uint32_t deliver_bitmask[MAX_APIC_WORDS];
int dest_shorthand = (s->icr[0] >> 18) & 3;
APICState *apic_iter;
switch (dest_shorthand) {
- case 0:
- deliver_bitmask = apic_get_delivery_bitmask(dest, dest_mode);
- break;
- case 1:
- deliver_bitmask = (1 << s->id);
- break;
- case 2:
- deliver_bitmask = 0xffffffff;
- break;
- case 3:
- deliver_bitmask = 0xffffffff & ~(1 << s->id);
- break;
+ 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->idx);
+ 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->idx);
+ break;
}
switch (delivery_mode) {
int trig_mode = (s->icr[0] >> 15) & 1;
int level = (s->icr[0] >> 14) & 1;
if (level == 0 && trig_mode == 1) {
- for (apic_iter = first_local_apic; apic_iter != NULL;
- apic_iter = apic_iter->next_apic) {
- if (deliver_bitmask & (1 << apic_iter->id)) {
- apic_iter->arb_id = apic_iter->id;
- }
- }
+ foreach_apic(apic_iter, deliver_bitmask,
+ apic_iter->arb_id = apic_iter->id );
return;
}
}
break;
case APIC_DM_SIPI:
- for (apic_iter = first_local_apic; apic_iter != NULL;
- apic_iter = apic_iter->next_apic) {
- if (deliver_bitmask & (1 << apic_iter->id)) {
- apic_startup(apic_iter, vector_num);
- }
- }
+ 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);
+ apic_bus_deliver(deliver_bitmask, delivery_mode, vector_num, trigger_mode);
}
-int apic_get_interrupt(CPUState *env)
+int apic_get_interrupt(DeviceState *d)
{
- APICState *s = env->apic_state;
+ APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
int intno;
/* if the APIC is installed or enabled, we let the 8259 handle the
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)
+
+ intno = apic_irq_pending(s);
+
+ if (intno == 0) {
return -1;
- reset_bit(s->irr, intno);
- if (s->tpr && intno <= s->tpr)
+ } else if (intno < 0) {
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(DeviceState *d)
+{
+ APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
+ 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) >>
+ d = (qemu_get_clock_ns(vm_clock) - s->initial_count_load_time) >>
s->count_shift;
if (s->lvt[APIC_LVT_TIMER] & APIC_LVT_TIMER_PERIODIC) {
/* periodic */
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) >>
+ 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)
{
APICState *s = opaque;
- if (!(s->lvt[APIC_LVT_TIMER] & APIC_LVT_MASKED)) {
- apic_set_irq(s, s->lvt[APIC_LVT_TIMER] & 0xff, APIC_TRIGGER_EDGE);
- }
+ apic_local_deliver(s, APIC_LVT_TIMER);
apic_timer_update(s, s->next_time);
}
static uint32_t apic_mem_readl(void *opaque, target_phys_addr_t addr)
{
- CPUState *env;
+ DeviceState *d;
APICState *s;
uint32_t val;
int index;
- env = cpu_single_env;
- if (!env)
+ d = cpu_get_current_apic();
+ if (!d) {
return 0;
- s = env->apic_state;
+ }
+ s = DO_UPCAST(APICState, busdev.qdev, d);
index = (addr >> 4) & 0xff;
switch(index) {
/* ppr */
val = apic_get_ppr(s);
break;
+ case 0x0b:
+ val = 0;
+ break;
case 0x0d:
val = s->log_dest << 24;
break;
val = 0;
break;
}
-#ifdef DEBUG_APIC
- printf("APIC read: %08x = %08x\n", (uint32_t)addr, val);
-#endif
+ trace_apic_mem_readl(addr, val);
return val;
}
+static void apic_send_msi(target_phys_addr_t addr, uint32_t data)
+{
+ uint8_t dest = (addr & MSI_ADDR_DEST_ID_MASK) >> MSI_ADDR_DEST_ID_SHIFT;
+ uint8_t vector = (data & MSI_DATA_VECTOR_MASK) >> MSI_DATA_VECTOR_SHIFT;
+ uint8_t dest_mode = (addr >> MSI_ADDR_DEST_MODE_SHIFT) & 0x1;
+ uint8_t trigger_mode = (data >> MSI_DATA_TRIGGER_SHIFT) & 0x1;
+ uint8_t delivery = (data >> MSI_DATA_DELIVERY_MODE_SHIFT) & 0x7;
+ /* XXX: Ignore redirection hint. */
+ apic_deliver_irq(dest, dest_mode, delivery, vector, trigger_mode);
+}
+
static void apic_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
{
- CPUState *env;
+ DeviceState *d;
APICState *s;
- int index;
+ int index = (addr >> 4) & 0xff;
+ if (addr > 0xfff || !index) {
+ /* MSI and MMIO APIC are at the same memory location,
+ * but actually not on the global bus: MSI is on PCI bus
+ * APIC is connected directly to the CPU.
+ * Mapping them on the global bus happens to work because
+ * MSI registers are reserved in APIC MMIO and vice versa. */
+ apic_send_msi(addr, val);
+ return;
+ }
- env = cpu_single_env;
- if (!env)
+ d = cpu_get_current_apic();
+ if (!d) {
return;
- s = env->apic_state;
+ }
+ s = DO_UPCAST(APICState, busdev.qdev, d);
-#ifdef DEBUG_APIC
- printf("APIC write: %08x = %08x\n", (uint32_t)addr, val);
-#endif
+ trace_apic_mem_writel(addr, val);
- index = (addr >> 4) & 0xff;
switch(index) {
case 0x02:
s->id = (val >> 24);
break;
case 0x30:
s->icr[0] = val;
- apic_deliver(s, (s->icr[1] >> 24) & 0xff, (s->icr[0] >> 11) & 1,
+ apic_deliver(d, (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);
+ (s->icr[0] >> 15) & 1);
break;
case 0x31:
s->icr[1] = val;
int n = index - 0x32;
s->lvt[n] = val;
if (n == APIC_LVT_TIMER)
- apic_timer_update(s, qemu_get_clock(vm_clock));
+ apic_timer_update(s, qemu_get_clock_ns(vm_clock));
}
break;
case 0x38:
s->initial_count = val;
- s->initial_count_load_time = qemu_get_clock(vm_clock);
+ s->initial_count_load_time = qemu_get_clock_ns(vm_clock);
apic_timer_update(s, s->initial_count_load_time);
break;
case 0x39:
}
}
-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_be32s(f, &s->count_shift);
- qemu_put_be32s(f, &s->initial_count);
- qemu_put_be64s(f, &s->initial_count_load_time);
- qemu_put_be64s(f, &s->next_time);
-}
-
-static int apic_load(QEMUFile *f, void *opaque, int version_id)
+/* This function is only used for old state version 1 and 2 */
+static int apic_load_old(QEMUFile *f, void *opaque, int version_id)
{
APICState *s = opaque;
int i;
- if (version_id != 1)
+ if (version_id > 2)
return -EINVAL;
/* XXX: what if the base changes? (registered memory regions) */
qemu_get_be32s(f, &s->icr[0]);
qemu_get_be32s(f, &s->icr[1]);
qemu_get_be32s(f, &s->divide_conf);
- qemu_get_be32s(f, &s->count_shift);
+ s->count_shift=qemu_get_be32(f);
qemu_get_be32s(f, &s->initial_count);
- qemu_get_be64s(f, &s->initial_count_load_time);
- qemu_get_be64s(f, &s->next_time);
- return 0;
-}
-
-static void apic_reset(void *opaque)
-{
- APICState *s = opaque;
- apic_init_ipi(s);
-}
-
-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,
-};
+ s->initial_count_load_time=qemu_get_be64(f);
+ s->next_time=qemu_get_be64(f);
-int apic_init(CPUState *env)
-{
- APICState *s;
-
- s = qemu_mallocz(sizeof(APICState));
- if (!s)
- return -1;
- env->apic_state = s;
- apic_init_ipi(s);
- s->id = last_apic_id++;
- s->cpu_env = env;
- s->apicbase = 0xfee00000 |
- (s->id ? 0 : MSR_IA32_APICBASE_BSP) | MSR_IA32_APICBASE_ENABLE;
-
- /* 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", 0, 1, apic_save, apic_load, s);
- qemu_register_reset(apic_reset, s);
-
- s->next_apic = first_local_apic;
- first_local_apic = s;
-
+ if (version_id >= 2)
+ qemu_get_timer(f, s->timer);
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;
-
- 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_bus_deliver(apic_get_delivery_bitmask(dest, dest_mode),
- delivery_mode, vector, polarity, trig_mode);
- }
- }
+static const VMStateDescription vmstate_apic = {
+ .name = "apic",
+ .version_id = 3,
+ .minimum_version_id = 3,
+ .minimum_version_id_old = 1,
+ .load_state_old = apic_load_old,
+ .fields = (VMStateField []) {
+ VMSTATE_UINT32(apicbase, APICState),
+ VMSTATE_UINT8(id, APICState),
+ VMSTATE_UINT8(arb_id, APICState),
+ VMSTATE_UINT8(tpr, APICState),
+ VMSTATE_UINT32(spurious_vec, APICState),
+ VMSTATE_UINT8(log_dest, APICState),
+ VMSTATE_UINT8(dest_mode, APICState),
+ VMSTATE_UINT32_ARRAY(isr, APICState, 8),
+ VMSTATE_UINT32_ARRAY(tmr, APICState, 8),
+ VMSTATE_UINT32_ARRAY(irr, APICState, 8),
+ VMSTATE_UINT32_ARRAY(lvt, APICState, APIC_LVT_NB),
+ VMSTATE_UINT32(esr, APICState),
+ VMSTATE_UINT32_ARRAY(icr, APICState, 2),
+ VMSTATE_UINT32(divide_conf, APICState),
+ VMSTATE_INT32(count_shift, APICState),
+ VMSTATE_UINT32(initial_count, APICState),
+ VMSTATE_INT64(initial_count_load_time, APICState),
+ VMSTATE_INT64(next_time, APICState),
+ VMSTATE_TIMER(timer, APICState),
+ VMSTATE_END_OF_LIST()
}
-}
+};
-void ioapic_set_irq(void *opaque, int vector, int level)
+static void apic_reset(DeviceState *d)
{
- IOAPICState *s = opaque;
-
- 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);
- }
- }
+ APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
+ int bsp;
+
+ bsp = cpu_is_bsp(s->cpu_env);
+ s->apicbase = 0xfee00000 |
+ (bsp ? MSR_IA32_APICBASE_BSP : 0) | MSR_IA32_APICBASE_ENABLE;
+
+ apic_init_reset(d);
+
+ if (bsp) {
+ /*
+ * 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 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 const MemoryRegionOps apic_io_ops = {
+ .old_mmio = {
+ .read = { apic_mem_readb, apic_mem_readw, apic_mem_readl, },
+ .write = { apic_mem_writeb, apic_mem_writew, apic_mem_writel, },
+ },
+ .endianness = DEVICE_NATIVE_ENDIAN,
+};
-static void ioapic_save(QEMUFile *f, void *opaque)
+static int apic_init1(SysBusDevice *dev)
{
- IOAPICState *s = opaque;
- int i;
+ APICState *s = FROM_SYSBUS(APICState, dev);
+ static int last_apic_idx;
- 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]);
+ if (last_apic_idx >= MAX_APICS) {
+ return -1;
}
-}
+ memory_region_init_io(&s->io_memory, &apic_io_ops, s, "apic",
+ MSI_ADDR_SIZE);
+ sysbus_init_mmio_region(dev, &s->io_memory);
-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]);
- }
+ s->timer = qemu_new_timer_ns(vm_clock, apic_timer, s);
+ s->idx = last_apic_idx++;
+ local_apics[s->idx] = s;
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,
+static SysBusDeviceInfo apic_info = {
+ .init = apic_init1,
+ .qdev.name = "apic",
+ .qdev.size = sizeof(APICState),
+ .qdev.vmsd = &vmstate_apic,
+ .qdev.reset = apic_reset,
+ .qdev.no_user = 1,
+ .qdev.props = (Property[]) {
+ DEFINE_PROP_UINT8("id", APICState, id, -1),
+ DEFINE_PROP_PTR("cpu_env", APICState, cpu_env),
+ DEFINE_PROP_END_OF_LIST(),
+ }
};
-IOAPICState *ioapic_init(void)
+static void apic_register_devices(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;
+ sysbus_register_withprop(&apic_info);
}
+
+device_init(apic_register_devices)
projects / qemu.git / blobdiff