* THE SOFTWARE.
*/
#include "qemu/osdep.h"
+#include "qemu-common.h"
+#include "cpu.h"
#include "hw/hw.h"
#include "hw/ppc/ppc.h"
#include "hw/ppc/ppc_e500.h"
{
CPUState *cs = CPU(cpu);
CPUPPCState *env = &cpu->env;
- unsigned int old_pending = env->pending_interrupts;
+ unsigned int old_pending;
+ bool locked = false;
+
+ /* We may already have the BQL if coming from the reset path */
+ if (!qemu_mutex_iothread_locked()) {
+ locked = true;
+ qemu_mutex_lock_iothread();
+ }
+
+ old_pending = env->pending_interrupts;
if (level) {
env->pending_interrupts |= 1 << n_IRQ;
#endif
}
+
LOG_IRQ("%s: %p n_IRQ %d level %d => pending %08" PRIx32
"req %08x\n", __func__, env, n_IRQ, level,
env->pending_interrupts, CPU(cpu)->interrupt_request);
+
+ if (locked) {
+ qemu_mutex_unlock_iothread();
+ }
}
/* PowerPC 6xx / 7xx internal IRQ controller */
}
}
-void ppc6xx_irq_init(CPUPPCState *env)
+void ppc6xx_irq_init(PowerPCCPU *cpu)
{
- PowerPCCPU *cpu = ppc_env_get_cpu(env);
+ CPUPPCState *env = &cpu->env;
env->irq_inputs = (void **)qemu_allocate_irqs(&ppc6xx_set_irq, cpu,
PPC6xx_INPUT_NB);
}
}
-void ppc970_irq_init(CPUPPCState *env)
+void ppc970_irq_init(PowerPCCPU *cpu)
{
- PowerPCCPU *cpu = ppc_env_get_cpu(env);
+ CPUPPCState *env = &cpu->env;
env->irq_inputs = (void **)qemu_allocate_irqs(&ppc970_set_irq, cpu,
PPC970_INPUT_NB);
}
}
-void ppcPOWER7_irq_init(CPUPPCState *env)
+void ppcPOWER7_irq_init(PowerPCCPU *cpu)
{
- PowerPCCPU *cpu = ppc_env_get_cpu(env);
+ CPUPPCState *env = &cpu->env;
env->irq_inputs = (void **)qemu_allocate_irqs(&power7_set_irq, cpu,
POWER7_INPUT_NB);
}
}
-void ppc40x_irq_init(CPUPPCState *env)
+void ppc40x_irq_init(PowerPCCPU *cpu)
{
- PowerPCCPU *cpu = ppc_env_get_cpu(env);
+ CPUPPCState *env = &cpu->env;
env->irq_inputs = (void **)qemu_allocate_irqs(&ppc40x_set_irq,
cpu, PPC40x_INPUT_NB);
if (level) {
LOG_IRQ("%s: reset the PowerPC system\n",
__func__);
- qemu_system_reset_request();
+ qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
}
break;
case PPCE500_INPUT_RESET_CORE:
}
}
-void ppce500_irq_init(CPUPPCState *env)
+void ppce500_irq_init(PowerPCCPU *cpu)
{
- PowerPCCPU *cpu = ppc_env_get_cpu(env);
+ CPUPPCState *env = &cpu->env;
env->irq_inputs = (void **)qemu_allocate_irqs(&ppce500_set_irq,
cpu, PPCE500_INPUT_NB);
uint64_t cpu_ppc_get_tb(ppc_tb_t *tb_env, uint64_t vmclk, int64_t tb_offset)
{
/* TB time in tb periods */
- return muldiv64(vmclk, tb_env->tb_freq, get_ticks_per_sec()) + tb_offset;
+ return muldiv64(vmclk, tb_env->tb_freq, NANOSECONDS_PER_SECOND) + tb_offset;
}
uint64_t cpu_ppc_load_tbl (CPUPPCState *env)
static inline void cpu_ppc_store_tb(ppc_tb_t *tb_env, uint64_t vmclk,
int64_t *tb_offsetp, uint64_t value)
{
- *tb_offsetp = value - muldiv64(vmclk, tb_env->tb_freq, get_ticks_per_sec());
+ *tb_offsetp = value -
+ muldiv64(vmclk, tb_env->tb_freq, NANOSECONDS_PER_SECOND);
+
LOG_TB("%s: tb %016" PRIx64 " offset %08" PRIx64 "\n",
__func__, value, *tb_offsetp);
}
diff = next - qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
if (diff >= 0) {
- decr = muldiv64(diff, tb_env->decr_freq, get_ticks_per_sec());
+ decr = muldiv64(diff, tb_env->decr_freq, NANOSECONDS_PER_SECOND);
} else if (tb_env->flags & PPC_TIMER_BOOKE) {
decr = 0;
} else {
- decr = -muldiv64(-diff, tb_env->decr_freq, get_ticks_per_sec());
+ decr = -muldiv64(-diff, tb_env->decr_freq, NANOSECONDS_PER_SECOND);
}
LOG_TB("%s: %08" PRIx32 "\n", __func__, decr);
diff = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) - tb_env->purr_start;
- return tb_env->purr_load + muldiv64(diff, tb_env->tb_freq, get_ticks_per_sec());
+ return tb_env->purr_load +
+ muldiv64(diff, tb_env->tb_freq, NANOSECONDS_PER_SECOND);
}
/* When decrementer expires,
static inline void cpu_ppc_hdecr_excp(PowerPCCPU *cpu)
{
+ CPUPPCState *env = &cpu->env;
+
/* Raise it */
- LOG_TB("raise decrementer exception\n");
- ppc_set_irq(cpu, PPC_INTERRUPT_HDECR, 1);
+ LOG_TB("raise hv decrementer exception\n");
+
+ /* The architecture specifies that we don't deliver HDEC
+ * interrupts in a PM state. Not only they don't cause a
+ * wakeup but they also get effectively discarded.
+ */
+ if (!env->in_pm_state) {
+ ppc_set_irq(cpu, PPC_INTERRUPT_HDECR, 1);
+ }
}
static inline void cpu_ppc_hdecr_lower(PowerPCCPU *cpu)
/* Calculate the next timer event */
now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
- next = now + muldiv64(value, get_ticks_per_sec(), tb_env->decr_freq);
+ next = now + muldiv64(value, NANOSECONDS_PER_SECOND, tb_env->decr_freq);
*nextp = next;
/* Adjust timer */
cpu_ppc_store_purr(cpu, 0x0000000000000000ULL);
}
-static void timebase_pre_save(void *opaque)
+static void timebase_save(PPCTimebase *tb)
{
- PPCTimebase *tb = opaque;
uint64_t ticks = cpu_get_host_ticks();
PowerPCCPU *first_ppc_cpu = POWERPC_CPU(first_cpu);
return;
}
+ /* not used anymore, we keep it for compatibility */
tb->time_of_the_day_ns = qemu_clock_get_ns(QEMU_CLOCK_HOST);
/*
- * tb_offset is only expected to be changed by migration so
+ * tb_offset is only expected to be changed by QEMU so
* there is no need to update it from KVM here
*/
tb->guest_timebase = ticks + first_ppc_cpu->env.tb_env->tb_offset;
}
-static int timebase_post_load(void *opaque, int version_id)
+static void timebase_load(PPCTimebase *tb)
{
- PPCTimebase *tb_remote = opaque;
CPUState *cpu;
PowerPCCPU *first_ppc_cpu = POWERPC_CPU(first_cpu);
- int64_t tb_off_adj, tb_off, ns_diff;
- int64_t migration_duration_ns, migration_duration_tb, guest_tb, host_ns;
+ int64_t tb_off_adj, tb_off;
unsigned long freq;
if (!first_ppc_cpu->env.tb_env) {
error_report("No timebase object");
- return -1;
+ return;
}
freq = first_ppc_cpu->env.tb_env->tb_freq;
- /*
- * Calculate timebase on the destination side of migration.
- * The destination timebase must be not less than the source timebase.
- * We try to adjust timebase by downtime if host clocks are not
- * too much out of sync (1 second for now).
- */
- host_ns = qemu_clock_get_ns(QEMU_CLOCK_HOST);
- ns_diff = MAX(0, host_ns - tb_remote->time_of_the_day_ns);
- migration_duration_ns = MIN(NANOSECONDS_PER_SECOND, ns_diff);
- migration_duration_tb = muldiv64(migration_duration_ns, freq,
- NANOSECONDS_PER_SECOND);
- guest_tb = tb_remote->guest_timebase + MIN(0, migration_duration_tb);
- tb_off_adj = guest_tb - cpu_get_host_ticks();
+ tb_off_adj = tb->guest_timebase - cpu_get_host_ticks();
tb_off = first_ppc_cpu->env.tb_env->tb_offset;
trace_ppc_tb_adjust(tb_off, tb_off_adj, tb_off_adj - tb_off,
CPU_FOREACH(cpu) {
PowerPCCPU *pcpu = POWERPC_CPU(cpu);
pcpu->env.tb_env->tb_offset = tb_off_adj;
+#if defined(CONFIG_KVM)
+ kvm_set_one_reg(cpu, KVM_REG_PPC_TB_OFFSET,
+ &pcpu->env.tb_env->tb_offset);
+#endif
}
+}
+
+void cpu_ppc_clock_vm_state_change(void *opaque, int running,
+ RunState state)
+{
+ PPCTimebase *tb = opaque;
+
+ if (running) {
+ timebase_load(tb);
+ } else {
+ timebase_save(tb);
+ }
+}
+
+/*
+ * When migrating, read the clock just before migration,
+ * so that the guest clock counts during the events
+ * between:
+ *
+ * * vm_stop()
+ * *
+ * * pre_save()
+ *
+ * This reduces clock difference on migration from 5s
+ * to 0.1s (when max_downtime == 5s), because sending the
+ * final pages of memory (which happens between vm_stop()
+ * and pre_save()) takes max_downtime.
+ */
+static int timebase_pre_save(void *opaque)
+{
+ PPCTimebase *tb = opaque;
+
+ timebase_save(tb);
return 0;
}
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.pre_save = timebase_pre_save,
- .post_load = timebase_post_load,
.fields = (VMStateField []) {
VMSTATE_UINT64(guest_timebase, PPCTimebase),
VMSTATE_INT64(time_of_the_day_ns, PPCTimebase),
}
/* Create new timer */
tb_env->decr_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, &cpu_ppc_decr_cb, cpu);
- if (0) {
- /* XXX: find a suitable condition to enable the hypervisor decrementer
- */
+ if (env->has_hv_mode) {
tb_env->hdecr_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, &cpu_ppc_hdecr_cb,
cpu);
} else {
}
/* Specific helpers for POWER & PowerPC 601 RTC */
-#if 0
-static clk_setup_cb cpu_ppc601_rtc_init (CPUPPCState *env)
-{
- return cpu_ppc_tb_init(env, 7812500);
-}
-#endif
-
void cpu_ppc601_store_rtcu (CPUPPCState *env, uint32_t value)
{
_cpu_ppc_store_tbu(env, value);
/* Cannot occur, but makes gcc happy */
return;
}
- next = now + muldiv64(next, get_ticks_per_sec(), tb_env->tb_freq);
+ next = now + muldiv64(next, NANOSECONDS_PER_SECOND, tb_env->tb_freq);
if (next == now)
next++;
timer_mod(ppc40x_timer->fit_timer, next);
__func__, ppc40x_timer->pit_reload);
now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
next = now + muldiv64(ppc40x_timer->pit_reload,
- get_ticks_per_sec(), tb_env->decr_freq);
+ NANOSECONDS_PER_SECOND, tb_env->decr_freq);
if (is_excp)
next += tb_env->decr_next - now;
if (next == now)
/* Cannot occur, but makes gcc happy */
return;
}
- next = now + muldiv64(next, get_ticks_per_sec(), tb_env->decr_freq);
+ next = now + muldiv64(next, NANOSECONDS_PER_SECOND, tb_env->decr_freq);
if (next == now)
next++;
LOG_TB("%s: TCR " TARGET_FMT_lx " TSR " TARGET_FMT_lx "\n", __func__,
break;
}
}
-
-/* CPU device-tree ID helpers */
-int ppc_get_vcpu_dt_id(PowerPCCPU *cpu)
-{
- return cpu->cpu_dt_id;
-}
-
-PowerPCCPU *ppc_get_vcpu_by_dt_id(int cpu_dt_id)
-{
- CPUState *cs;
-
- CPU_FOREACH(cs) {
- PowerPCCPU *cpu = POWERPC_CPU(cs);
-
- if (cpu->cpu_dt_id == cpu_dt_id) {
- return cpu;
- }
- }
-
- return NULL;
-}
projects / qemu.git / blobdiff