Signed-off-by: liguang <lig.f...@cn.fujitsu.com>
---
default-configs/arm-softmmu.mak | 2 +
hw/timer/Makefile.objs | 1 +
hw/timer/sunxi-pit.c | 260 +++++++++++++++++++++++++++++++++++++++
include/hw/timer/sunxi-pit.h | 26 ++++
4 files changed, 289 insertions(+), 0 deletions(-)
create mode 100644 hw/timer/sunxi-pit.c
create mode 100644 include/hw/timer/sunxi-pit.h
diff --git a/default-configs/arm-softmmu.mak b/default-configs/arm-softmmu.mak
index a555eef..7bf5ad0 100644
--- a/default-configs/arm-softmmu.mak
+++ b/default-configs/arm-softmmu.mak
@@ -81,3 +81,5 @@ CONFIG_VERSATILE_I2C=y
CONFIG_SDHCI=y
CONFIG_INTEGRATOR_DEBUG=y
+
+CONFIG_SUNXI_PIT=y
diff --git a/hw/timer/Makefile.objs b/hw/timer/Makefile.objs
index eca5905..f7888e9 100644
--- a/hw/timer/Makefile.objs
+++ b/hw/timer/Makefile.objs
@@ -27,3 +27,4 @@ obj-$(CONFIG_SH4) += sh_timer.o
obj-$(CONFIG_TUSB6010) += tusb6010.o
obj-$(CONFIG_MC146818RTC) += mc146818rtc.o
+obj-$(CONFIG_SUNXI_PIT) += sunxi-pit.o
diff --git a/hw/timer/sunxi-pit.c b/hw/timer/sunxi-pit.c
new file mode 100644
index 0000000..6220b60
--- /dev/null
+++ b/hw/timer/sunxi-pit.c
@@ -0,0 +1,260 @@
+/*
+ * Allwinner sunxi timer device emulation
+ *
+ * Copyright (C) 2013 Li Guang
+ * Written by Li Guang <lig.f...@cn.fujitsu.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ */
+
+#include "hw/sysbus.h"
+#include "hw/ptimer.h"
+#include "sysemu/sysemu.h"
+#include "hw/timer/sunxi-pit.h"
+
+
+typedef struct SunxiPITState {
+ SysBusDevice busdev;
+ qemu_irq irq[SUNXI_TIMER_NR];
+ ptimer_state *timer[6];
+ ptimer_state *counter;
+ 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 count_lo;
+ uint32_t count_hi;
+ uint32_t count_ctl;
+} 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;
+ index >>= 4;
+ index -= 1;
+ 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_COUNT_LO:
+ return s->count_lo;
+ break;
+ case SUNXI_COUNT_HI:
+ return s->count_hi;
+ break;
+ case SUNXI_COUNT_CTL:
+ return s->count_ctl;
+ 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 < 32; 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;
+ index >>= 4;
+ index -= 1;
+ switch (offset & 0x0f) {
+ case SUNXI_TIMER_CONTROL:
+ s->control[index] = value;
+ if (s->control[index] & 0x2) {
+ ptimer_set_count(s->timer[index], s->interval[index]);
+ }
+ if (s->control[index] & 0x1) {
+ ptimer_run(s->timer[index], 1);
+ } else {
+ ptimer_stop(s->timer[index]);
+ }
+ break;
+ case SUNXI_TIMER_INTERVAL:
+ s->interval[index] = value;
+ ptimer_set_count(s->timer[index], s->interval[index]);
+ 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_COUNT_LO:
+ s->count_lo = value;
+ break;
+ case SUNXI_COUNT_HI:
+ s->count_hi = value;
+ break;
+ case SUNXI_COUNT_CTL:
+ s->count_ctl = value;
+ if (s->count_ctl & 0x2) {
+ s->count_lo = ptimer_get_count(s->counter) ;
+ s->count_hi = ptimer_get_count(s->counter) >> 32;
+ s->count_ctl &= ~0x2;
+ }
+ if (s->count_ctl & 0x1) {
+ s->count_lo =0;
+ s->count_hi =0;
+ s->count_ctl &= ~0x1;
+ }
+ 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]);
+ }
+ s->watch_dog_mode = 0;
+ s->watch_dog_control = 0;
+ s->count_lo = 0;
+ s->count_hi = 0;
+ s->count_ctl = 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->control[i] & 0x80) && s->control[i] & 0x1) {
+ s->irq_status |= 1 << i;
+ ptimer_set_count(s->timer[i], s->interval[i]);
+ ptimer_run(s->timer[i], 1);
+ }
+ if (s->irq_status & s->irq_enable & (1 << i)) {
+ qemu_irq_raise(s->irq[i]);
+ } else {
+ qemu_irq_lower(s->irq[i]);
+ }
+ }
+}
+
+static void sunxi_pit_counter_cb(void *opaque)
+{
+}
+
+static void sunxi_pit_realize(DeviceState *dev, Error **errp)
+{
+ SunxiPITState *s = SUNXI_PIT(dev);
+ SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
+ QEMUBH *bh[SUNXI_TIMER_NR];
+ QEMUBH *cbh;
+ 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);
+
+ for (i = 0; i < SUNXI_TIMER_NR; i++) {
+ bh[i] = qemu_bh_new(sunxi_pit_timer_cb, s);
+ s->timer[i] = ptimer_init(bh[i]);
+ ptimer_set_freq(s->timer[i], 240000);
+ }
+ cbh = qemu_bh_new(sunxi_pit_counter_cb, s);
+ s->counter = ptimer_init(cbh);
+ ptimer_set_freq(s->counter, 100);
+ ptimer_set_count(s->counter, 0xffffffff);
+ ptimer_run(s->counter, 0);
+}
+
+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_register_types(void)
+{
+ type_register_static(&sunxi_pit_info);
+}
+
+type_init(sunxi_register_types);
diff --git a/include/hw/timer/sunxi-pit.h b/include/hw/timer/sunxi-pit.h
new file mode 100644
index 0000000..38f1b4d
--- /dev/null
+++ b/include/hw/timer/sunxi-pit.h
@@ -0,0 +1,26 @@
+#ifndef SUNXI_PIT_H
+#define SUNXI_PIT_H
+
+
+#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_COUNT_CTL 0xa0
+#define SUNXI_COUNT_LO 0xa4
+#define SUNXI_COUNT_HI 0xa8
+#define SUNXI_TIMER_BASE 0x10
+
+
+#endif
+
--
1.7.2.5
