Signed-off-by: liguang <lig.f...@cn.fujitsu.com>
---
hw/arm/sunxi-soc.c | 209 ++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 209 insertions(+), 0 deletions(-)
diff --git a/hw/arm/sunxi-soc.c b/hw/arm/sunxi-soc.c
index 1b369ba..960539a 100644
--- a/hw/arm/sunxi-soc.c
+++ b/hw/arm/sunxi-soc.c
@@ -2,6 +2,7 @@
#include "hw/devices.h"
#include "hw/boards.h"
#include "hw/arm/arm.h"
+#include "hw/ptimer.h"
#include "sysemu/sysemu.h"
@@ -296,6 +297,214 @@ static const TypeInfo sunxi_pic_info = {
.class_init = sunxi_pic_class_init,
};
+
+#define TYPE_SUNXI_PIT "sunix-timer"
+#define SUNXI_PIT(obj) OBJECT_CHECK(SunxiPITState, (obj), TYPE_SUNXI_PIT)
+
+#define SUNXI_TIMER_NR 6
+#define SUNXI_TIMER_IRQ 0x1
+#define SUNXI_WDOG_IRQ 0x100
+
+#define SUNXI_TIMER_IRQ_EN 0
+#define SUNXI_TIMER_IRQ_ST 0x4
+#define SUNXI_TIMER_CONTROL 0x0
+#define SUNXI_TIMER_INTERVAL 0x4
+#define SUNXI_TIMER_COUNT 0x8
+#define SUNXI_WDOG_CONTROL 0x90
+#define SUNXI_WDOG_MODE 0x94
+#define SUNXI_WDOG_COUNT_LO 0xa4
+#define SUNXI_WDOG_COUNT_HI 0xa8
+#define SUNXI_TIMER_BASE 0x10
+
+typedef struct SunxiPITState {
+ SysBusDevice busdev;
+ qemu_irq irq[SUNXI_TIMER_NR];
+ ptimer_state *timer[6];
+ MemoryRegion iomem;
+ uint32_t irq_enable;
+ uint32_t irq_status;
+ uint32_t control[6];
+ uint32_t interval[6];
+ uint32_t count[6];
+ uint32_t watch_dog_mode;
+ uint32_t watch_dog_control;
+ uint32_t watch_dog_count_lo;
+ uint32_t watch_dog_count_hi;
+} SunxiPITState;
+
+static uint64_t sunxi_pit_read(void *opaque, hwaddr offset, unsigned size)
+{
+ SunxiPITState *s = SUNXI_PIT(opaque);
+ uint8_t index = 0;
+
+ switch (offset) {
+ case SUNXI_TIMER_IRQ_EN:
+ return s->irq_enable;
+ break;
+ case SUNXI_TIMER_IRQ_ST:
+ return s->irq_status;
+ break;
+ case SUNXI_TIMER_BASE ... SUNXI_TIMER_BASE * 6 + SUNXI_TIMER_COUNT:
+ index = offset & 0xf0;
+ switch (offset & 0x0f) {
+ case SUNXI_TIMER_CONTROL:
+ return s->control[index];
+ break;
+ case SUNXI_TIMER_INTERVAL:
+ return s->interval[index];
+ break;
+ case SUNXI_TIMER_COUNT:
+ s->count[index] = ptimer_get_count(s->timer[index]);
+ return s->count[index];
+ default:
+ break;
+ }
+ break;
+ case SUNXI_WDOG_CONTROL:
+ break;
+ case SUNXI_WDOG_MODE:
+ break;
+ case SUNXI_WDOG_COUNT_LO:
+ break;
+ case SUNXI_WDOG_COUNT_HI:
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static void sunxi_pit_write(void *opaque, hwaddr offset, uint64_t value,
+ unsigned size)
+{
+ SunxiPITState *s = SUNXI_PIT(opaque);
+ uint8_t index = 0;
+
+ switch (offset) {
+ case SUNXI_TIMER_IRQ_EN:
+ s->irq_enable = value;
+ break;
+ case SUNXI_TIMER_IRQ_ST:
+ for (index = 0; index < sizeof(uint32_t); index++) {
+ if (test_bit(index, (void *)&value)) {
+ clear_bit(index, (void *)&s->irq_status);
+ }
+ }
+ break;
+ case SUNXI_TIMER_BASE ... SUNXI_TIMER_BASE * 6 + SUNXI_TIMER_COUNT:
+ index = (offset & 0xf0) - 1;
+ index >>= 4;
+ switch (offset & 0x0f) {
+ case SUNXI_TIMER_CONTROL:
+ s->control[index] = value;
+ if (s->control[index] & 0x1) {
+ ptimer_run(s->timer[index], 0);
+ } else {
+ ptimer_stop(s->timer[index]);
+ }
+ break;
+ case SUNXI_TIMER_INTERVAL:
+ s->interval[index] = value;
+ ptimer_set_limit(s->timer[index], s->interval[index],
+ s->control[index] & 0x2);
+ break;
+ case SUNXI_TIMER_COUNT:
+ s->count[index] = value;
+ default:
+ break;
+ }
+ break;
+ case SUNXI_WDOG_CONTROL:
+ s->watch_dog_control = value;
+ break;
+ case SUNXI_WDOG_MODE:
+ s->watch_dog_mode = value;
+ break;
+ case SUNXI_WDOG_COUNT_LO:
+ s->watch_dog_count_lo = value;
+ break;
+ case SUNXI_WDOG_COUNT_HI:
+ s->watch_dog_count_hi = value;
+ default:
+ break;
+ }
+}
+
+static const MemoryRegionOps sunxi_pit_ops = {
+ .read = sunxi_pit_read,
+ .write = sunxi_pit_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+};
+
+static void sunxi_pit_reset(DeviceState *dev)
+{
+ SunxiPITState *s = SUNXI_PIT(dev);
+ uint8_t i = 0;
+
+ s->irq_enable = 0;
+ s->irq_status = 0;
+ for (i = 0; i < 6; i++) {
+ s->control[i] = 0x4;
+ s->interval[i] = 0;
+ s->count[i] = 0;
+ ptimer_stop(s->timer[i]);
+ ptimer_set_limit(s->timer[i], 0XFFFFFFFFUL, 1);
+ }
+ s->watch_dog_mode = 0;
+ s->watch_dog_control = 0;
+ s->watch_dog_count_lo = 0;
+ s->watch_dog_count_hi = 0;
+}
+
+static void sunxi_pit_timer_cb(void *opaque)
+{
+ SunxiPITState *s = SUNXI_PIT(opaque);
+ uint8_t i = 0;
+
+ for (i = 0; i < SUNXI_TIMER_NR; i++) {
+ if (s->irq_status & s->irq_enable & (1 << i)) {
+ qemu_irq_raise(s->irq[i]);
+ } else {
+ qemu_irq_raise(s->irq[i]);
+ }
+ }
+}
+
+static void sunxi_pit_realize(DeviceState *dev, Error **errp)
+{
+ SunxiPITState *s = SUNXI_PIT(dev);
+ SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
+ QEMUBH *bh;
+ uint8_t i = 0;
+
+ for (i = 0; i < SUNXI_TIMER_NR; i++) {
+ sysbus_init_irq(sbd, &s->irq[i]);
+ }
+ memory_region_init_io(&s->iomem, OBJECT(s), &sunxi_pit_ops, s,
+ TYPE_SUNXI_PIT, 0x400);
+ sysbus_init_mmio(sbd, &s->iomem);
+ bh = qemu_bh_new(sunxi_pit_timer_cb, s);
+ for (i = 0; i < SUNXI_TIMER_NR; i++) {
+ s->timer[i] = ptimer_init(bh);
+ }
+}
+
+static void sunxi_pit_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->realize = sunxi_pit_realize;
+ dc->reset = sunxi_pit_reset;
+ dc->desc = "sunxi timer";
+}
+
+static const TypeInfo sunxi_pit_info = {
+ .name = TYPE_SUNXI_PIT,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(SunxiPITState),
+ .class_init = sunxi_pit_class_init,
+};
+
static void sunxi_init(QEMUMachineInitArgs *args)
{
}
--
1.7.2.5
