diff options
Diffstat (limited to 'hw/ppc.c')
| -rw-r--r-- | hw/ppc.c | 54 |
1 files changed, 53 insertions, 1 deletions
@@ -24,6 +24,57 @@ #include "vl.h" #include "m48t59.h" +extern FILE *logfile; +extern int loglevel; + +/*****************************************************************************/ +/* PowerPC internal fake IRQ controller + * used to manage multiple sources hardware events + */ +/* XXX: should be protected */ +void ppc_set_irq (void *opaque, int n_IRQ, int level) +{ + CPUState *env; + + env = opaque; + if (level) { + env->pending_interrupts |= 1 << n_IRQ; + cpu_interrupt(env, CPU_INTERRUPT_HARD); + } else { + env->pending_interrupts &= ~(1 << n_IRQ); + if (env->pending_interrupts == 0) + cpu_reset_interrupt(env, CPU_INTERRUPT_HARD); + } +#if 0 + printf("%s: %p n_IRQ %d level %d => pending %08x req %08x\n", __func__, + env, n_IRQ, level, env->pending_interrupts, env->interrupt_request); +#endif +} + +/* External IRQ callback from OpenPIC IRQ controller */ +void ppc_openpic_irq (void *opaque, int n_IRQ, int level) +{ + switch (n_IRQ) { + case OPENPIC_EVT_INT: + n_IRQ = PPC_INTERRUPT_EXT; + break; + case OPENPIC_EVT_CINT: + /* On PowerPC BookE, critical input use vector 0 */ + n_IRQ = PPC_INTERRUPT_RESET; + break; + case OPENPIC_EVT_MCK: + n_IRQ = PPC_INTERRUPT_MCK; + break; + case OPENPIC_EVT_DEBUG: + n_IRQ = PPC_INTERRUPT_DEBUG; + break; + case OPENPIC_EVT_RESET: + qemu_system_reset_request(); + return; + } + ppc_set_irq(opaque, n_IRQ, level); +} + /*****************************************************************************/ /* PPC time base and decrementer emulation */ //#define DEBUG_TB @@ -35,6 +86,7 @@ struct ppc_tb_t { /* Decrementer management */ uint64_t decr_next; /* Tick for next decr interrupt */ struct QEMUTimer *decr_timer; + void *opaque; }; static inline uint64_t cpu_ppc_get_tb (ppc_tb_t *tb_env) @@ -131,7 +183,7 @@ static inline void cpu_ppc_decr_excp (CPUState *env) #ifdef DEBUG_TB printf("raise decrementer exception\n"); #endif - cpu_interrupt(env, CPU_INTERRUPT_TIMER); + ppc_set_irq(env, PPC_INTERRUPT_DECR, 1); } static void _cpu_ppc_store_decr (CPUState *env, uint32_t decr, |