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Diffstat (limited to 'qemu/hw/timer/digic-timer.c')
| -rw-r--r-- | qemu/hw/timer/digic-timer.c | 163 |
1 files changed, 0 insertions, 163 deletions
diff --git a/qemu/hw/timer/digic-timer.c b/qemu/hw/timer/digic-timer.c deleted file mode 100644 index 5b97e1e1a..000000000 --- a/qemu/hw/timer/digic-timer.c +++ /dev/null @@ -1,163 +0,0 @@ -/* - * QEMU model of the Canon DIGIC timer block. - * - * Copyright (C) 2013 Antony Pavlov <antonynpavlov@gmail.com> - * - * This model is based on reverse engineering efforts - * made by CHDK (http://chdk.wikia.com) and - * Magic Lantern (http://www.magiclantern.fm) projects - * contributors. - * - * See "Timer/Clock Module" docs here: - * http://magiclantern.wikia.com/wiki/Register_Map - * - * The QEMU model of the OSTimer in PKUnity SoC by Guan Xuetao - * is used as a template. - * - * 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 "qemu/osdep.h" -#include "hw/sysbus.h" -#include "hw/ptimer.h" -#include "qemu/main-loop.h" - -#include "hw/timer/digic-timer.h" - -static const VMStateDescription vmstate_digic_timer = { - .name = "digic.timer", - .version_id = 1, - .minimum_version_id = 1, - .fields = (VMStateField[]) { - VMSTATE_PTIMER(ptimer, DigicTimerState), - VMSTATE_UINT32(control, DigicTimerState), - VMSTATE_UINT32(relvalue, DigicTimerState), - VMSTATE_END_OF_LIST() - } -}; - -static void digic_timer_reset(DeviceState *dev) -{ - DigicTimerState *s = DIGIC_TIMER(dev); - - ptimer_stop(s->ptimer); - s->control = 0; - s->relvalue = 0; -} - -static uint64_t digic_timer_read(void *opaque, hwaddr offset, unsigned size) -{ - DigicTimerState *s = opaque; - uint64_t ret = 0; - - switch (offset) { - case DIGIC_TIMER_CONTROL: - ret = s->control; - break; - case DIGIC_TIMER_RELVALUE: - ret = s->relvalue; - break; - case DIGIC_TIMER_VALUE: - ret = ptimer_get_count(s->ptimer) & 0xffff; - break; - default: - qemu_log_mask(LOG_UNIMP, - "digic-timer: read access to unknown register 0x" - TARGET_FMT_plx, offset); - } - - return ret; -} - -static void digic_timer_write(void *opaque, hwaddr offset, - uint64_t value, unsigned size) -{ - DigicTimerState *s = opaque; - - switch (offset) { - case DIGIC_TIMER_CONTROL: - if (value & DIGIC_TIMER_CONTROL_RST) { - digic_timer_reset((DeviceState *)s); - break; - } - - if (value & DIGIC_TIMER_CONTROL_EN) { - ptimer_run(s->ptimer, 0); - } - - s->control = (uint32_t)value; - break; - - case DIGIC_TIMER_RELVALUE: - s->relvalue = extract32(value, 0, 16); - ptimer_set_limit(s->ptimer, s->relvalue, 1); - break; - - case DIGIC_TIMER_VALUE: - break; - - default: - qemu_log_mask(LOG_UNIMP, - "digic-timer: read access to unknown register 0x" - TARGET_FMT_plx, offset); - } -} - -static const MemoryRegionOps digic_timer_ops = { - .read = digic_timer_read, - .write = digic_timer_write, - .impl = { - .min_access_size = 4, - .max_access_size = 4, - }, - .endianness = DEVICE_NATIVE_ENDIAN, -}; - -static void digic_timer_init(Object *obj) -{ - DigicTimerState *s = DIGIC_TIMER(obj); - - s->ptimer = ptimer_init(NULL); - - /* - * FIXME: there is no documentation on Digic timer - * frequency setup so let it always run at 1 MHz - */ - ptimer_set_freq(s->ptimer, 1 * 1000 * 1000); - - memory_region_init_io(&s->iomem, OBJECT(s), &digic_timer_ops, s, - TYPE_DIGIC_TIMER, 0x100); - sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->iomem); -} - -static void digic_timer_class_init(ObjectClass *klass, void *class_data) -{ - DeviceClass *dc = DEVICE_CLASS(klass); - - dc->reset = digic_timer_reset; - dc->vmsd = &vmstate_digic_timer; -} - -static const TypeInfo digic_timer_info = { - .name = TYPE_DIGIC_TIMER, - .parent = TYPE_SYS_BUS_DEVICE, - .instance_size = sizeof(DigicTimerState), - .instance_init = digic_timer_init, - .class_init = digic_timer_class_init, -}; - -static void digic_timer_register_type(void) -{ - type_register_static(&digic_timer_info); -} - -type_init(digic_timer_register_type) |