* This driver attempts to emulate an HPET device in software.
*/
+#include "qemu/osdep.h"
#include "hw/hw.h"
#include "hw/i386/pc.h"
#include "ui/console.h"
+#include "qapi/error.h"
#include "qemu/error-report.h"
#include "qemu/timer.h"
#include "hw/timer/hpet.h"
static uint32_t hpet_time_after(uint64_t a, uint64_t b)
{
- return ((int32_t)(b) - (int32_t)(a) < 0);
+ return ((int32_t)(b - a) < 0);
}
static uint32_t hpet_time_after64(uint64_t a, uint64_t b)
{
- return ((int64_t)(b) - (int64_t)(a) < 0);
+ return ((int64_t)(b - a) < 0);
}
static uint64_t ticks_to_ns(uint64_t value)
{
- return (muldiv64(value, HPET_CLK_PERIOD, FS_PER_NS));
+ return value * HPET_CLK_PERIOD;
}
static uint64_t ns_to_ticks(uint64_t value)
{
- return (muldiv64(value, FS_PER_NS, HPET_CLK_PERIOD));
+ return value / HPET_CLK_PERIOD;
}
static uint64_t hpet_fixup_reg(uint64_t new, uint64_t old, uint64_t mask)
if (!set || !timer_enabled(timer) || !hpet_enabled(timer->state)) {
s->isr &= ~mask;
if (!timer_fsb_route(timer)) {
- /* fold the ICH PIRQ# pin's internal inversion logic into hpet */
- if (route >= ISA_NUM_IRQS) {
- qemu_irq_raise(s->irqs[route]);
- } else {
- qemu_irq_lower(s->irqs[route]);
- }
+ qemu_irq_lower(s->irqs[route]);
}
} else if (timer_fsb_route(timer)) {
address_space_stl_le(&address_space_memory, timer->fsb >> 32,
NULL);
} else if (timer->config & HPET_TN_TYPE_LEVEL) {
s->isr |= mask;
- /* fold the ICH PIRQ# pin's internal inversion logic into hpet */
- if (route >= ISA_NUM_IRQS) {
- qemu_irq_lower(s->irqs[route]);
- } else {
- qemu_irq_raise(s->irqs[route]);
- }
+ qemu_irq_raise(s->irqs[route]);
} else {
s->isr &= ~mask;
qemu_irq_pulse(s->irqs[route]);
HPETState *s = HPET(obj);
/* HPET Area */
- memory_region_init_io(&s->iomem, obj, &hpet_ram_ops, s, "hpet", 0x400);
+ memory_region_init_io(&s->iomem, obj, &hpet_ram_ops, s, "hpet", HPET_LEN);
sysbus_init_mmio(sbd, &s->iomem);
}
/* 64-bit main counter; LegacyReplacementRoute. */
s->capability = 0x8086a001ULL;
s->capability |= (s->num_timers - 1) << HPET_ID_NUM_TIM_SHIFT;
- s->capability |= ((HPET_CLK_PERIOD) << 32);
+ s->capability |= ((uint64_t)(HPET_CLK_PERIOD * FS_PER_NS) << 32);
qdev_init_gpio_in(dev, hpet_handle_legacy_irq, 2);
qdev_init_gpio_out(dev, &s->pit_enabled, 1);