diff options
Diffstat (limited to 'hw/syborg_timer.c')
| -rw-r--r-- | hw/syborg_timer.c | 224 |
1 files changed, 0 insertions, 224 deletions
diff --git a/hw/syborg_timer.c b/hw/syborg_timer.c deleted file mode 100644 index 1498f01a62..0000000000 --- a/hw/syborg_timer.c +++ /dev/null @@ -1,224 +0,0 @@ -/* - * Syborg Interval Timer. - * - * Copyright (c) 2008 CodeSourcery - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ - -#include "sysbus.h" -#include "qemu-timer.h" -#include "syborg.h" - -//#define DEBUG_SYBORG_TIMER - -#ifdef DEBUG_SYBORG_TIMER -#define DPRINTF(fmt, ...) \ -do { printf("syborg_timer: " fmt , ##args); } while (0) -#define BADF(fmt, ...) \ -do { fprintf(stderr, "syborg_timer: error: " fmt , ## __VA_ARGS__); \ - exit(1);} while (0) -#else -#define DPRINTF(fmt, ...) do {} while(0) -#define BADF(fmt, ...) \ -do { fprintf(stderr, "syborg_timer: error: " fmt , ## __VA_ARGS__);} while (0) -#endif - -enum { - TIMER_ID = 0, - TIMER_RUNNING = 1, - TIMER_ONESHOT = 2, - TIMER_LIMIT = 3, - TIMER_VALUE = 4, - TIMER_INT_ENABLE = 5, - TIMER_INT_STATUS = 6, - TIMER_FREQ = 7 -}; - -typedef struct { - SysBusDevice busdev; - MemoryRegion iomem; - ptimer_state *timer; - int running; - int oneshot; - uint32_t limit; - uint32_t freq; - uint32_t int_level; - uint32_t int_enabled; - qemu_irq irq; -} SyborgTimerState; - -static void syborg_timer_update(SyborgTimerState *s) -{ - /* Update interrupt. */ - if (s->int_level && s->int_enabled) { - qemu_irq_raise(s->irq); - } else { - qemu_irq_lower(s->irq); - } -} - -static void syborg_timer_tick(void *opaque) -{ - SyborgTimerState *s = (SyborgTimerState *)opaque; - //DPRINTF("Timer Tick\n"); - s->int_level = 1; - if (s->oneshot) - s->running = 0; - syborg_timer_update(s); -} - -static uint64_t syborg_timer_read(void *opaque, target_phys_addr_t offset, - unsigned size) -{ - SyborgTimerState *s = (SyborgTimerState *)opaque; - - DPRINTF("Reg read %d\n", (int)offset); - offset &= 0xfff; - switch (offset >> 2) { - case TIMER_ID: - return SYBORG_ID_TIMER; - case TIMER_RUNNING: - return s->running; - case TIMER_ONESHOT: - return s->oneshot; - case TIMER_LIMIT: - return s->limit; - case TIMER_VALUE: - return ptimer_get_count(s->timer); - case TIMER_INT_ENABLE: - return s->int_enabled; - case TIMER_INT_STATUS: - return s->int_level; - case TIMER_FREQ: - return s->freq; - default: - cpu_abort(cpu_single_env, "syborg_timer_read: Bad offset %x\n", - (int)offset); - return 0; - } -} - -static void syborg_timer_write(void *opaque, target_phys_addr_t offset, - uint64_t value, unsigned size) -{ - SyborgTimerState *s = (SyborgTimerState *)opaque; - - DPRINTF("Reg write %d\n", (int)offset); - offset &= 0xfff; - switch (offset >> 2) { - case TIMER_RUNNING: - if (value == s->running) - break; - s->running = value; - if (value) { - ptimer_run(s->timer, s->oneshot); - } else { - ptimer_stop(s->timer); - } - break; - case TIMER_ONESHOT: - if (s->running) { - ptimer_stop(s->timer); - } - s->oneshot = value; - if (s->running) { - ptimer_run(s->timer, s->oneshot); - } - break; - case TIMER_LIMIT: - s->limit = value; - ptimer_set_limit(s->timer, value, 1); - break; - case TIMER_VALUE: - ptimer_set_count(s->timer, value); - break; - case TIMER_INT_ENABLE: - s->int_enabled = value; - syborg_timer_update(s); - break; - case TIMER_INT_STATUS: - s->int_level &= ~value; - syborg_timer_update(s); - break; - default: - cpu_abort(cpu_single_env, "syborg_timer_write: Bad offset %x\n", - (int)offset); - break; - } -} - -static const MemoryRegionOps syborg_timer_ops = { - .read = syborg_timer_read, - .write = syborg_timer_write, - .endianness = DEVICE_NATIVE_ENDIAN, -}; - -static const VMStateDescription vmstate_syborg_timer = { - .name = "syborg_timer", - .version_id = 1, - .minimum_version_id = 1, - .minimum_version_id_old = 1, - .fields = (VMStateField[]) { - VMSTATE_INT32(running, SyborgTimerState), - VMSTATE_INT32(oneshot, SyborgTimerState), - VMSTATE_UINT32(limit, SyborgTimerState), - VMSTATE_UINT32(int_level, SyborgTimerState), - VMSTATE_UINT32(int_enabled, SyborgTimerState), - VMSTATE_PTIMER(timer, SyborgTimerState), - VMSTATE_END_OF_LIST() - } -}; - -static int syborg_timer_init(SysBusDevice *dev) -{ - SyborgTimerState *s = FROM_SYSBUS(SyborgTimerState, dev); - QEMUBH *bh; - - if (s->freq == 0) { - fprintf(stderr, "syborg_timer: Zero/unset frequency\n"); - exit(1); - } - sysbus_init_irq(dev, &s->irq); - memory_region_init_io(&s->iomem, &syborg_timer_ops, s, "timer", 0x1000); - sysbus_init_mmio(dev, &s->iomem); - - bh = qemu_bh_new(syborg_timer_tick, s); - s->timer = ptimer_init(bh); - ptimer_set_freq(s->timer, s->freq); - vmstate_register(&dev->qdev, -1, &vmstate_syborg_timer, s); - return 0; -} - -static SysBusDeviceInfo syborg_timer_info = { - .init = syborg_timer_init, - .qdev.name = "syborg,timer", - .qdev.size = sizeof(SyborgTimerState), - .qdev.props = (Property[]) { - DEFINE_PROP_UINT32("frequency",SyborgTimerState, freq, 0), - DEFINE_PROP_END_OF_LIST(), - } -}; - -static void syborg_timer_register_devices(void) -{ - sysbus_register_withprop(&syborg_timer_info); -} - -device_init(syborg_timer_register_devices) |