diff options
Diffstat (limited to 'hw/ppc.c')
| -rw-r--r-- | hw/ppc.c | 107 |
1 files changed, 100 insertions, 7 deletions
@@ -412,6 +412,13 @@ struct ppc_tb_t { /* Decrementer management */ uint64_t decr_next; /* Tick for next decr interrupt */ struct QEMUTimer *decr_timer; +#if defined(TARGET_PPC64H) + /* Hypervisor decrementer management */ + uint64_t hdecr_next; /* Tick for next hdecr interrupt */ + struct QEMUTimer *hdecr_timer; + uint64_t purr_load; + uint64_t purr_start; +#endif void *opaque; }; @@ -489,7 +496,7 @@ void cpu_ppc_store_tbl (CPUState *env, uint32_t value) ((uint64_t)cpu_ppc_load_tbu(env) << 32) | value); } -uint32_t cpu_ppc_load_decr (CPUState *env) +static inline uint32_t _cpu_ppc_load_decr (CPUState *env, uint64_t *next) { ppc_tb_t *tb_env = env->tb_env; uint32_t decr; @@ -509,6 +516,32 @@ uint32_t cpu_ppc_load_decr (CPUState *env) return decr; } +uint32_t cpu_ppc_load_decr (CPUState *env) +{ + ppc_tb_t *tb_env = env->tb_env; + + return _cpu_ppc_load_decr(env, &tb_env->decr_next); +} + +#if defined(TARGET_PPC64H) +uint32_t cpu_ppc_load_hdecr (CPUState *env) +{ + ppc_tb_t *tb_env = env->tb_env; + + return _cpu_ppc_load_decr(env, &tb_env->hdecr_next); +} + +uint64_t cpu_ppc_load_purr (CPUState *env) +{ + ppc_tb_t *tb_env = env->tb_env; + uint64_t diff; + + diff = qemu_get_clock(vm_clock) - tb_env->purr_start; + + return tb_env->purr_load + muldiv64(diff, tb_env->tb_freq, ticks_per_sec); +} +#endif /* defined(TARGET_PPC64H) */ + /* When decrementer expires, * all we need to do is generate or queue a CPU exception */ @@ -523,8 +556,22 @@ static inline void cpu_ppc_decr_excp (CPUState *env) ppc_set_irq(env, PPC_INTERRUPT_DECR, 1); } -static void _cpu_ppc_store_decr (CPUState *env, uint32_t decr, - uint32_t value, int is_excp) +static inline void cpu_ppc_hdecr_excp (CPUState *env) +{ + /* Raise it */ +#ifdef PPC_DEBUG_TB + if (loglevel != 0) { + fprintf(logfile, "raise decrementer exception\n"); + } +#endif + ppc_set_irq(env, PPC_INTERRUPT_HDECR, 1); +} + +static void __cpu_ppc_store_decr (CPUState *env, uint64_t *nextp, + struct QEMUTimer *timer, + void (*raise_excp)(CPUState *), + uint32_t decr, uint32_t value, + int is_excp) { ppc_tb_t *tb_env = env->tb_env; uint64_t now, next; @@ -537,17 +584,27 @@ static void _cpu_ppc_store_decr (CPUState *env, uint32_t decr, now = qemu_get_clock(vm_clock); next = now + muldiv64(value, ticks_per_sec, tb_env->tb_freq); if (is_excp) - next += tb_env->decr_next - now; + next += *nextp - now; if (next == now) next++; - tb_env->decr_next = next; + *nextp = next; /* Adjust timer */ - qemu_mod_timer(tb_env->decr_timer, next); + qemu_mod_timer(timer, next); /* If we set a negative value and the decrementer was positive, * raise an exception. */ if ((value & 0x80000000) && !(decr & 0x80000000)) - cpu_ppc_decr_excp(env); + (*raise_excp)(env); +} + + +static inline void _cpu_ppc_store_decr (CPUState *env, uint32_t decr, + uint32_t value, int is_excp) +{ + ppc_tb_t *tb_env = env->tb_env; + + __cpu_ppc_store_decr(env, &tb_env->decr_next, tb_env->decr_timer, + &cpu_ppc_decr_excp, decr, value, is_excp); } void cpu_ppc_store_decr (CPUState *env, uint32_t value) @@ -560,6 +617,35 @@ static void cpu_ppc_decr_cb (void *opaque) _cpu_ppc_store_decr(opaque, 0x00000000, 0xFFFFFFFF, 1); } +#if defined(TARGET_PPC64H) +static inline void _cpu_ppc_store_hdecr (CPUState *env, uint32_t hdecr, + uint32_t value, int is_excp) +{ + ppc_tb_t *tb_env = env->tb_env; + + __cpu_ppc_store_decr(env, &tb_env->hdecr_next, tb_env->hdecr_timer, + &cpu_ppc_hdecr_excp, hdecr, value, is_excp); +} + +void cpu_ppc_store_hdecr (CPUState *env, uint32_t value) +{ + _cpu_ppc_store_hdecr(env, cpu_ppc_load_hdecr(env), value, 0); +} + +static void cpu_ppc_hdecr_cb (void *opaque) +{ + _cpu_ppc_store_hdecr(opaque, 0x00000000, 0xFFFFFFFF, 1); +} + +void cpu_ppc_store_purr (CPUState *env, uint64_t value) +{ + ppc_tb_t *tb_env = env->tb_env; + + tb_env->purr_load = value; + tb_env->purr_start = qemu_get_clock(vm_clock); +} +#endif /* defined(TARGET_PPC64H) */ + static void cpu_ppc_set_tb_clk (void *opaque, uint32_t freq) { CPUState *env = opaque; @@ -571,6 +657,10 @@ static void cpu_ppc_set_tb_clk (void *opaque, uint32_t freq) * it's not ready to handle it... */ _cpu_ppc_store_decr(env, 0xFFFFFFFF, 0xFFFFFFFF, 0); +#if defined(TARGET_PPC64H) + _cpu_ppc_store_hdecr(env, 0xFFFFFFFF, 0xFFFFFFFF, 0); + cpu_ppc_store_purr(env, 0x0000000000000000ULL); +#endif /* defined(TARGET_PPC64H) */ } /* Set up (once) timebase frequency (in Hz) */ @@ -584,6 +674,9 @@ clk_setup_cb cpu_ppc_tb_init (CPUState *env, uint32_t freq) env->tb_env = tb_env; /* Create new timer */ tb_env->decr_timer = qemu_new_timer(vm_clock, &cpu_ppc_decr_cb, env); +#if defined(TARGET_PPC64H) + tb_env->hdecr_timer = qemu_new_timer(vm_clock, &cpu_ppc_hdecr_cb, env); +#endif /* defined(TARGET_PPC64H) */ cpu_ppc_set_tb_clk(env, freq); return &cpu_ppc_set_tb_clk; |