diff options
| -rw-r--r-- | Makefile.target | 2 | ||||
| -rw-r--r-- | hw/ptimer.c | 63 | ||||
| -rw-r--r-- | hw/slavio_timer.c | 139 | ||||
| -rw-r--r-- | vl.h | 8 |
4 files changed, 110 insertions, 102 deletions
diff --git a/Makefile.target b/Makefile.target index a48652e88..98fe7e12b 100644 --- a/Makefile.target +++ b/Makefile.target @@ -449,7 +449,7 @@ VL_OBJS+= cirrus_vga.o parallel.o 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) diff --git a/hw/ptimer.c b/hw/ptimer.c index 2f350fc09..feabefed9 100644 --- a/hw/ptimer.c +++ b/hw/ptimer.c @@ -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 @@ static void ptimer_tick(void *opaque) } } -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); @@ -75,8 +75,8 @@ uint32_t ptimer_get_count(ptimer_state *s) triggered. */ counter = 0; } else { - int64_t rem; - int64_t div; + uint64_t rem; + uint64_t div; rem = s->next_event - now; div = s->period; @@ -88,7 +88,7 @@ uint32_t ptimer_get_count(ptimer_state *s) 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) { @@ -108,7 +108,7 @@ void ptimer_run(ptimer_state *s, int oneshot) ptimer_reload(s); } -/* Pause a timer. Note that this may cause it to "loose" time, even if it +/* Pause a timer. Note that this may cause it to "lose" time, even if it is immediately restarted. */ void ptimer_stop(ptimer_state *s) { @@ -123,33 +123,60 @@ void ptimer_stop(ptimer_state *s) /* Set counter increment interval in nanoseconds. */ void ptimer_set_period(ptimer_state *s, int64_t period) { - if (s->enabled) { - fprintf(stderr, "FIXME: ptimer_set_period with running timer"); - } s->period = period; s->period_frac = 0; + if (s->enabled) { + s->next_event = qemu_get_clock(vm_clock); + ptimer_reload(s); + } } /* Set counter frequency in Hz. */ void ptimer_set_freq(ptimer_state *s, uint32_t freq) { - if (s->enabled) { - fprintf(stderr, "FIXME: ptimer_set_freq with running timer"); - } s->period = 1000000000ll / freq; s->period_frac = (1000000000ll << 32) / freq; + if (s->enabled) { + s->next_event = qemu_get_clock(vm_clock); + ptimer_reload(s); + } } /* 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"); - } s->limit = limit; if (reload) s->delta = limit; + if (s->enabled) { + s->next_event = qemu_get_clock(vm_clock); + ptimer_reload(s); + } +} + +void qemu_put_ptimer(QEMUFile *f, ptimer_state *s) +{ + qemu_put_byte(f, s->enabled); + qemu_put_be64s(f, &s->limit); + qemu_put_be64s(f, &s->delta); + qemu_put_be32s(f, &s->period_frac); + qemu_put_be64s(f, &s->period); + qemu_put_be64s(f, &s->last_event); + qemu_put_be64s(f, &s->next_event); + qemu_put_timer(f, s->timer); +} + +void qemu_get_ptimer(QEMUFile *f, ptimer_state *s) +{ + s->enabled = qemu_get_byte(f); + qemu_get_be64s(f, &s->limit); + qemu_get_be64s(f, &s->delta); + qemu_get_be32s(f, &s->period_frac); + qemu_get_be64s(f, &s->period); + qemu_get_be64s(f, &s->last_event); + qemu_get_be64s(f, &s->next_event); + qemu_get_timer(f, s->timer); } ptimer_state *ptimer_init(QEMUBH *bh) diff --git a/hw/slavio_timer.c b/hw/slavio_timer.c index 114770467..e8b435f1c 100644 --- a/hw/slavio_timer.c +++ b/hw/slavio_timer.c @@ -48,61 +48,29 @@ do { printf("TIMER: " fmt , ##args); } while (0) */ typedef struct SLAVIO_TIMERState { - uint32_t limit, count, counthigh; - int64_t count_load_time; - int64_t expire_time; - int64_t stop_time, tick_offset; - QEMUTimer *irq_timer; + ptimer_state *timer; + uint32_t count, counthigh, reached; + uint64_t limit; 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 +// Convert from ptimer countdown units static void slavio_timer_get_out(SLAVIO_TIMERState *s) { - int out; - int64_t diff, ticks, count; - uint32_t limit; + uint64_t count; - // 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); - - 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 = s->limit - (ptimer_get_count(s->timer) << 9); + DPRINTF("get_out: limit %" PRIx64 " count %x%08x\n", s->limit, s->counthigh, + s->count); + s->count = count & 0xfffffe00; + s->counthigh = count >> 32; } // timer callback @@ -110,17 +78,17 @@ static void slavio_timer_irq(void *opaque) { 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) { SLAVIO_TIMERState *s = opaque; - uint32_t saddr; + uint32_t saddr, ret; saddr = (addr & TIMER_MAXADDR) >> 2; switch (saddr) { @@ -131,60 +99,69 @@ static uint32_t slavio_timer_mem_readl(void *opaque, target_phys_addr_t addr) // clear irq pic_set_irq_cpu(s->intctl, s->irq, 0, s->cpu); s->reached = 0; - return s->limit; + ret = s->limit & 0x7fffffff; } else { slavio_timer_get_out(s); - return s->counthigh & 0x7fffffff; + ret = s->counthigh & 0x7fffffff; } + break; case 1: // read counter and reached bit (system mode) or read lsbits // of counter (user mode) slavio_timer_get_out(s); if (s->mode != 1) - return (s->count & 0x7fffffff) | s->reached; + ret = (s->count & 0x7fffffff) | s->reached; else - return s->count; + ret = s->count; + break; case 3: // read start/stop status - return s->stopped; + ret = s->stopped; + break; case 4: // read user/system mode - return s->mode & 1; + ret = s->mode & 1; + break; default: - return 0; + ret = 0; + break; } + DPRINTF("read " TARGET_FMT_plx " = %08x\n", addr, ret); + + return ret; } static void slavio_timer_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val) { 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 - if (!val) - s->limit = 0x7fffffff; - else - s->limit = val & 0x7fffffff; - slavio_timer_irq(s); + s->limit = val & 0x7ffffe00ULL; + if (!s->limit) + s->limit = 0x7ffffe00ULL; + ptimer_set_limit(s->timer, s->limit >> 9, 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; } } @@ -193,6 +170,11 @@ static void slavio_timer_mem_writel(void *opaque, target_phys_addr_t addr, uint3 // bit 0: user (1) or system (0) counter mode if (s->mode == 0 || s->mode == 1) s->mode = val & 1; + if (s->mode == 1) { + pic_set_irq_cpu(s->intctl, s->irq, 0, s->cpu); + s->limit = -1ULL; + } + ptimer_set_limit(s->timer, s->limit >> 9, 1); break; default: break; @@ -215,37 +197,32 @@ static void slavio_timer_save(QEMUFile *f, void *opaque) { SLAVIO_TIMERState *s = opaque; - qemu_put_be32s(f, &s->limit); + qemu_put_be64s(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); qemu_put_be32s(f, &s->mode); + qemu_put_ptimer(f, s->timer); } static int slavio_timer_load(QEMUFile *f, void *opaque, int version_id) { SLAVIO_TIMERState *s = opaque; - if (version_id != 1) + if (version_id != 2) return -EINVAL; - qemu_get_be32s(f, &s->limit); + qemu_get_be64s(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); qemu_get_be32s(f, &s->mode); + qemu_get_ptimer(f, s->timer); + return 0; } @@ -253,13 +230,12 @@ static void slavio_timer_reset(void *opaque) { SLAVIO_TIMERState *s = opaque; - s->limit = 0; + s->limit = 0x7ffffe00ULL; 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 >> 9, 1); + ptimer_run(s->timer, 0); s->stopped = 1; slavio_timer_irq(s); } @@ -269,6 +245,7 @@ void slavio_timer_init(target_phys_addr_t addr, int irq, int mode, { int slavio_timer_io_memory; SLAVIO_TIMERState *s; + QEMUBH *bh; s = qemu_mallocz(sizeof(SLAVIO_TIMERState)); if (!s) @@ -276,13 +253,15 @@ void slavio_timer_init(target_phys_addr_t addr, int irq, int mode, 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, 500ULL); 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); } @@ -1589,11 +1589,13 @@ typedef void (*ptimer_cb)(void *opaque); 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); +void qemu_put_ptimer(QEMUFile *f, ptimer_state *s); +void qemu_get_ptimer(QEMUFile *f, ptimer_state *s); #include "hw/pxa.h" |