diff options
Diffstat (limited to 'hw/ppc/ppc_booke.c')
| -rw-r--r-- | hw/ppc/ppc_booke.c | 43 |
1 files changed, 38 insertions, 5 deletions
diff --git a/hw/ppc/ppc_booke.c b/hw/ppc/ppc_booke.c index 8bbfc728de..56c4196735 100644 --- a/hw/ppc/ppc_booke.c +++ b/hw/ppc/ppc_booke.c @@ -128,7 +128,8 @@ static uint8_t booke_get_wdt_target(CPUPPCState *env, ppc_tb_t *tb_env) static void booke_update_fixed_timer(CPUPPCState *env, uint8_t target_bit, uint64_t *next, - struct QEMUTimer *timer) + QEMUTimer *timer, + int tsr_bit) { ppc_tb_t *tb_env = env->tb_env; uint64_t delta_tick, ticks = 0; @@ -136,6 +137,14 @@ static void booke_update_fixed_timer(CPUPPCState *env, uint64_t period; uint64_t now; + if (!(env->spr[SPR_BOOKE_TSR] & tsr_bit)) { + /* + * Don't arm the timer again when the guest has the current + * interrupt still pending. Wait for it to ack it. + */ + return; + } + now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); tb = cpu_ppc_get_tb(tb_env, now, tb_env->tb_offset); period = 1ULL << target_bit; @@ -167,6 +176,7 @@ static void booke_update_fixed_timer(CPUPPCState *env, (*next)++; } + /* Fire the next timer */ timer_mod(timer, *next); } @@ -200,7 +210,8 @@ static void booke_fit_cb(void *opaque) booke_update_fixed_timer(env, booke_get_fit_target(env, tb_env), &booke_timer->fit_next, - booke_timer->fit_timer); + booke_timer->fit_timer, + TSR_FIS); } static void booke_wdt_cb(void *opaque) @@ -220,15 +231,35 @@ static void booke_wdt_cb(void *opaque) booke_update_fixed_timer(env, booke_get_wdt_target(env, tb_env), &booke_timer->wdt_next, - booke_timer->wdt_timer); + booke_timer->wdt_timer, + TSR_WIS); } void store_booke_tsr(CPUPPCState *env, target_ulong val) { PowerPCCPU *cpu = ppc_env_get_cpu(env); + ppc_tb_t *tb_env = env->tb_env; + booke_timer_t *booke_timer = tb_env->opaque; env->spr[SPR_BOOKE_TSR] &= ~val; kvmppc_clear_tsr_bits(cpu, val); + + if (val & TSR_FIS) { + booke_update_fixed_timer(env, + booke_get_fit_target(env, tb_env), + &booke_timer->fit_next, + booke_timer->fit_timer, + TSR_FIS); + } + + if (val & TSR_WIS) { + booke_update_fixed_timer(env, + booke_get_wdt_target(env, tb_env), + &booke_timer->wdt_next, + booke_timer->wdt_timer, + TSR_WIS); + } + booke_update_irq(cpu); } @@ -247,12 +278,14 @@ void store_booke_tcr(CPUPPCState *env, target_ulong val) booke_update_fixed_timer(env, booke_get_fit_target(env, tb_env), &booke_timer->fit_next, - booke_timer->fit_timer); + booke_timer->fit_timer, + TSR_FIS); booke_update_fixed_timer(env, booke_get_wdt_target(env, tb_env), &booke_timer->wdt_next, - booke_timer->wdt_timer); + booke_timer->wdt_timer, + TSR_WIS); } static void ppc_booke_timer_reset_handle(void *opaque) |