Index: qemu/hw/slavio_timer.c =================================================================== --- qemu.orig/hw/slavio_timer.c 2007-05-23 18:44:20.000000000 +0000 +++ qemu/hw/slavio_timer.c 2007-05-23 18:46:18.000000000 +0000 @@ -48,61 +48,26 @@ */ typedef struct SLAVIO_TIMERState { - uint32_t limit, count, counthigh; - int64_t count_load_time; - int64_t expire_time; - int64_t stop_time, tick_offset; + ptimer_state *timer; + uint32_t limit, count, counthigh, reached; QEMUTimer *irq_timer; int irq; - int reached, stopped; + int stopped; int mode; // 0 = processor, 1 = user, 2 = system unsigned int cpu; void *intctl; } SLAVIO_TIMERState; #define TIMER_MAXADDR 0x1f -#define CNT_FREQ 2000000 // Update count, set irq, update expire_time static void slavio_timer_get_out(SLAVIO_TIMERState *s) { - int out; - int64_t diff, ticks, count; - uint32_t limit; - - // There are three clock tick units: CPU ticks, register units - // (nanoseconds), and counter ticks (500 ns). - if (s->mode == 1 && s->stopped) - ticks = s->stop_time; - else - ticks = qemu_get_clock(vm_clock) - s->tick_offset; - - out = (ticks > s->expire_time); - if (out) - s->reached = 0x80000000; - // Convert register units to counter ticks - limit = s->limit >> 9; - - if (!limit) - limit = 0x7fffffff >> 9; - - // Convert cpu ticks to counter ticks - diff = muldiv64(ticks - s->count_load_time, CNT_FREQ, ticks_per_sec); - - // Calculate what the counter should be, convert to register - // units - count = diff % limit; - s->count = count << 9; - s->counthigh = count >> 22; - - // Expire time: CPU ticks left to next interrupt - // Convert remaining counter ticks to CPU ticks - s->expire_time = ticks + muldiv64(limit - count, ticks_per_sec, CNT_FREQ); + uint64_t count; - DPRINTF("irq %d limit %d reached %d d %" PRId64 " count %d s->c %x diff %" PRId64 " stopped %d mode %d\n", s->irq, limit, s->reached?1:0, (ticks-s->count_load_time), count, s->count, s->expire_time - ticks, s->stopped, s->mode); - - if (s->mode != 1) - pic_set_irq_cpu(s->intctl, s->irq, out, s->cpu); + count = ptimer_get_count(s->timer); + s->count = count & 0xffffffff; + s->counthigh = count >> 32; } // timer callback @@ -110,11 +75,11 @@ { SLAVIO_TIMERState *s = opaque; - if (!s->irq_timer) - return; slavio_timer_get_out(s); + DPRINTF("callback: count %x%08x\n", s->counthigh, s->count); + s->reached = 0x80000000; if (s->mode != 1) - qemu_mod_timer(s->irq_timer, s->expire_time); + pic_set_irq_cpu(s->intctl, s->irq, 1, s->cpu); } static uint32_t slavio_timer_mem_readl(void *opaque, target_phys_addr_t addr) @@ -122,6 +87,7 @@ SLAVIO_TIMERState *s = opaque; uint32_t saddr; + DPRINTF("read " TARGET_FMT_plx "\n", addr); saddr = (addr & TIMER_MAXADDR) >> 2; switch (saddr) { case 0: @@ -160,12 +126,15 @@ { SLAVIO_TIMERState *s = opaque; uint32_t saddr; + int reload = 0; + DPRINTF("write " TARGET_FMT_plx " %08x\n", addr, val); saddr = (addr & TIMER_MAXADDR) >> 2; switch (saddr) { case 0: // set limit, reset counter - s->count_load_time = qemu_get_clock(vm_clock); + reload = 1; + pic_set_irq_cpu(s->intctl, s->irq, 0, s->cpu); // fall through case 2: // set limit without resetting counter @@ -173,18 +142,17 @@ s->limit = 0x7fffffff; else s->limit = val & 0x7fffffff; - slavio_timer_irq(s); + ptimer_set_limit(s->timer, s->limit, reload); break; case 3: // start/stop user counter if (s->mode == 1) { if (val & 1) { - s->stop_time = qemu_get_clock(vm_clock); + ptimer_stop(s->timer); s->stopped = 1; } else { - if (s->stopped) - s->tick_offset += qemu_get_clock(vm_clock) - s->stop_time; + ptimer_run(s->timer, 0); s->stopped = 0; } } @@ -218,10 +186,6 @@ qemu_put_be32s(f, &s->limit); qemu_put_be32s(f, &s->count); qemu_put_be32s(f, &s->counthigh); - qemu_put_be64s(f, &s->count_load_time); - qemu_put_be64s(f, &s->expire_time); - qemu_put_be64s(f, &s->stop_time); - qemu_put_be64s(f, &s->tick_offset); qemu_put_be32s(f, &s->irq); qemu_put_be32s(f, &s->reached); qemu_put_be32s(f, &s->stopped); @@ -232,16 +196,12 @@ { SLAVIO_TIMERState *s = opaque; - if (version_id != 1) + if (version_id != 2) return -EINVAL; qemu_get_be32s(f, &s->limit); qemu_get_be32s(f, &s->count); qemu_get_be32s(f, &s->counthigh); - qemu_get_be64s(f, &s->count_load_time); - qemu_get_be64s(f, &s->expire_time); - qemu_get_be64s(f, &s->stop_time); - qemu_get_be64s(f, &s->tick_offset); qemu_get_be32s(f, &s->irq); qemu_get_be32s(f, &s->reached); qemu_get_be32s(f, &s->stopped); @@ -253,13 +213,12 @@ { SLAVIO_TIMERState *s = opaque; - s->limit = 0; + s->limit = 0x7fffffff; s->count = 0; - s->count_load_time = qemu_get_clock(vm_clock);; - s->stop_time = s->count_load_time; - s->tick_offset = 0; s->reached = 0; s->mode &= 2; + ptimer_set_limit(s->timer, s->limit, 1); + ptimer_run(s->timer, 0); s->stopped = 1; slavio_timer_irq(s); } @@ -269,6 +228,7 @@ { int slavio_timer_io_memory; SLAVIO_TIMERState *s; + QEMUBH *bh; s = qemu_mallocz(sizeof(SLAVIO_TIMERState)); if (!s) @@ -276,13 +236,15 @@ s->irq = irq; s->mode = mode; s->cpu = cpu; - s->irq_timer = qemu_new_timer(vm_clock, slavio_timer_irq, s); + bh = qemu_bh_new(slavio_timer_irq, s); + s->timer = ptimer_init(bh); + ptimer_set_period(s->timer, 1ULL); s->intctl = intctl; slavio_timer_io_memory = cpu_register_io_memory(0, slavio_timer_mem_read, slavio_timer_mem_write, s); cpu_register_physical_memory(addr, TIMER_MAXADDR, slavio_timer_io_memory); - register_savevm("slavio_timer", addr, 1, slavio_timer_save, slavio_timer_load, s); + register_savevm("slavio_timer", addr, 2, slavio_timer_save, slavio_timer_load, s); qemu_register_reset(slavio_timer_reset, s); slavio_timer_reset(s); } Index: qemu/hw/ptimer.c =================================================================== --- qemu.orig/hw/ptimer.c 2007-05-23 18:44:20.000000000 +0000 +++ qemu/hw/ptimer.c 2007-05-23 18:46:18.000000000 +0000 @@ -11,8 +11,8 @@ struct ptimer_state { int enabled; /* 0 = disabled, 1 = periodic, 2 = oneshot. */ - uint32_t limit; - uint32_t delta; + uint64_t limit; + uint64_t delta; uint32_t period_frac; int64_t period; int64_t last_event; @@ -61,10 +61,10 @@ } } -uint32_t ptimer_get_count(ptimer_state *s) +uint64_t ptimer_get_count(ptimer_state *s) { int64_t now; - uint32_t counter; + uint64_t counter; if (s->enabled) { now = qemu_get_clock(vm_clock); @@ -88,7 +88,7 @@ return counter; } -void ptimer_set_count(ptimer_state *s, uint32_t count) +void ptimer_set_count(ptimer_state *s, uint64_t count) { s->delta = count; if (s->enabled) { @@ -142,7 +142,7 @@ /* Set the initial countdown value. If reload is nonzero then also set count = limit. */ -void ptimer_set_limit(ptimer_state *s, uint32_t limit, int reload) +void ptimer_set_limit(ptimer_state *s, uint64_t limit, int reload) { if (s->enabled) { fprintf(stderr, "FIXME: ptimer_set_limit with running timer"); Index: qemu/vl.h =================================================================== --- qemu.orig/vl.h 2007-05-23 18:44:20.000000000 +0000 +++ qemu/vl.h 2007-05-23 18:46:18.000000000 +0000 @@ -1589,9 +1589,9 @@ ptimer_state *ptimer_init(QEMUBH *bh); void ptimer_set_period(ptimer_state *s, int64_t period); void ptimer_set_freq(ptimer_state *s, uint32_t freq); -void ptimer_set_limit(ptimer_state *s, uint32_t limit, int reload); -uint32_t ptimer_get_count(ptimer_state *s); -void ptimer_set_count(ptimer_state *s, uint32_t count); +void ptimer_set_limit(ptimer_state *s, uint64_t limit, int reload); +uint64_t ptimer_get_count(ptimer_state *s); +void ptimer_set_count(ptimer_state *s, uint64_t count); void ptimer_run(ptimer_state *s, int oneshot); void ptimer_stop(ptimer_state *s); Index: qemu/Makefile.target =================================================================== --- qemu.orig/Makefile.target 2007-05-23 18:44:20.000000000 +0000 +++ qemu/Makefile.target 2007-05-23 18:46:18.000000000 +0000 @@ -449,7 +449,7 @@ else VL_OBJS+= sun4m.o tcx.o pcnet.o iommu.o m48t59.o slavio_intctl.o VL_OBJS+= slavio_timer.o slavio_serial.o slavio_misc.o fdc.o esp.o sparc32_dma.o -VL_OBJS+= cs4231.o +VL_OBJS+= cs4231.o ptimer.o endif endif ifeq ($(TARGET_BASE_ARCH), arm)