From: Kuo-Jung Su <dant...@faraday-tech.com> The FTPWMTMR010 is an APB device which provides up to 8 independent timers.
Signed-off-by: Kuo-Jung Su <dant...@faraday-tech.com> --- hw/arm/Makefile.objs | 1 + hw/arm/faraday_a369.c | 11 +++ hw/arm/ftpwmtmr010.c | 246 +++++++++++++++++++++++++++++++++++++++++++++++++ hw/arm/ftpwmtmr010.h | 25 +++++ 4 files changed, 283 insertions(+) create mode 100644 hw/arm/ftpwmtmr010.c create mode 100644 hw/arm/ftpwmtmr010.h diff --git a/hw/arm/Makefile.objs b/hw/arm/Makefile.objs index 2f34229..04904e7 100644 --- a/hw/arm/Makefile.objs +++ b/hw/arm/Makefile.objs @@ -39,4 +39,5 @@ obj-y += ftahbc020.o obj-y += ftddrii030.o obj-y += ftintc020.o obj-y += fttmr010.o +obj-y += ftpwmtmr010.o obj-y += ftwdt010.o diff --git a/hw/arm/faraday_a369.c b/hw/arm/faraday_a369.c index 1cc7661..89911e3 100644 --- a/hw/arm/faraday_a369.c +++ b/hw/arm/faraday_a369.c @@ -41,10 +41,21 @@ static void a369_device_init(A369State *s) { qemu_irq *pic; + DeviceState *ds; /* Interrupt Controller */ pic = ftintc020_init(0x90100000, s->cpu); + /* Timer */ + ds = qdev_create(NULL, "ftpwmtmr010"); + qdev_prop_set_uint32(ds, "freq", 66 * 1000000); + qdev_init_nofail(ds); + sysbus_mmio_map(SYS_BUS_DEVICE(ds), 0, 0x92300000); + sysbus_connect_irq(SYS_BUS_DEVICE(ds), 0, pic[8]); + sysbus_connect_irq(SYS_BUS_DEVICE(ds), 1, pic[9]); + sysbus_connect_irq(SYS_BUS_DEVICE(ds), 2, pic[10]); + sysbus_connect_irq(SYS_BUS_DEVICE(ds), 3, pic[11]); + /* Serial (FTUART010 which is 16550A compatible) */ if (serial_hds[0]) { serial_mm_init(s->as, diff --git a/hw/arm/ftpwmtmr010.c b/hw/arm/ftpwmtmr010.c new file mode 100644 index 0000000..bfcbc75 --- /dev/null +++ b/hw/arm/ftpwmtmr010.c @@ -0,0 +1,246 @@ +/* + * Faraday FTPWMTMR010 Timer. + * + * Copyright (c) 2012 Faraday Technology + * Written by Dante Su <dant...@faraday-tech.com> + * + * This code is licensed under GNU GPL v2+. + */ + +#include <hw/hw.h> +#include <hw/sysbus.h> +#include <qemu/timer.h> +#include <sysemu/sysemu.h> + +#include "faraday.h" +#include "ftpwmtmr010.h" + +#define TYPE_FTPWMTMR010 "ftpwmtmr010" +#define TYPE_FTPWMTMR010_TIMER "ftpwmtmr010_timer" + +typedef struct Ftpwmtmr010State Ftpwmtmr010State; + +typedef struct Ftpwmtmr010Timer { + uint32_t ctrl; + uint32_t cntb; + int id; + uint64_t timeout; + uint64_t countdown; + qemu_irq irq; + QEMUTimer *qtimer; + Ftpwmtmr010State *chip; +} Ftpwmtmr010Timer; + +struct Ftpwmtmr010State { + SysBusDevice busdev; + + MemoryRegion iomem; + Ftpwmtmr010Timer timer[8]; + uint32_t freq; /* desired source clock */ + uint32_t step; /* get_ticks_per_sec() / freq */ + uint32_t stat; +}; + +#define FTPWMTMR010(obj) \ + OBJECT_CHECK(Ftpwmtmr010State, obj, TYPE_FTPWMTMR010) + +static uint64_t ftpwmtmr010_mem_read(void *opaque, hwaddr addr, unsigned size) +{ + Ftpwmtmr010State *s = FTPWMTMR010(opaque); + Ftpwmtmr010Timer *t; + uint64_t now = qemu_get_clock_ns(vm_clock); + uint64_t ret = 0; + + if (addr == REG_STAT) { + ret = s->stat; + } else if (addr >= REG_TIMER_BASE(1) && addr < REG_TIMER_BASE(9)) { + t = s->timer + (addr >> 4) - 1; + switch (addr & 0x0f) { + case REG_TIMER_CTRL: + return t->ctrl; + case REG_TIMER_CNTB: + return t->cntb; + case REG_TIMER_CNTO: + if ((t->ctrl & TIMER_CTRL_START) && (t->timeout > now)) { + ret = (t->timeout - now) / s->step; + } + break; + } + } + + return ret; +} + +static void ftpwmtmr010_mem_write(void *opaque, + hwaddr addr, + uint64_t val, + unsigned size) +{ + Ftpwmtmr010State *s = FTPWMTMR010(opaque); + Ftpwmtmr010Timer *t; + + if (addr == REG_STAT) { + int i; + s->stat &= ~((uint32_t)val & 0xffffffff); + for (i = 0; i < 8; ++i) { + if (val & (1 << i)) { + qemu_irq_lower(s->timer[i].irq); + } + } + } else if (addr >= REG_TIMER_BASE(1) && addr < REG_TIMER_BASE(9)) { + t = s->timer + (addr >> 4) - 1; + switch (addr & 0x0f) { + case REG_TIMER_CTRL: + t->ctrl = (uint32_t)val; + if (t->ctrl & TIMER_CTRL_UPDATE) { + t->countdown = (uint64_t)t->cntb * (uint64_t)s->step; + } + if (t->ctrl & TIMER_CTRL_START) { + t->timeout = t->countdown + qemu_get_clock_ns(vm_clock); + qemu_mod_timer(t->qtimer, t->timeout); + } + break; + case REG_TIMER_CNTB: + t->cntb = (uint32_t)val; + break; + } + } +} + +static const MemoryRegionOps ftpwmtmr010_ops = { + .read = ftpwmtmr010_mem_read, + .write = ftpwmtmr010_mem_write, + .endianness = DEVICE_LITTLE_ENDIAN, +}; + +static void ftpwmtmr010_timer_tick(void *opaque) +{ + Ftpwmtmr010Timer *t = opaque; + Ftpwmtmr010State *s = t->chip; + + /* if the timer has been enabled/started */ + if (!(t->ctrl & (1 << 1))) { + return; + } + + /* if the interrupt enabled */ + if (t->ctrl & (1 << 5)) { + s->stat |= 1 << t->id; + if (t->ctrl & (1 << 6)) { + qemu_irq_pulse(t->irq); + } else { + qemu_irq_raise(t->irq); + } + } + + /* if auto-reload is enabled */ + if (t->ctrl & (1 << 4)) { + t->timeout = t->countdown + qemu_get_clock_ns(vm_clock); + qemu_mod_timer(t->qtimer, t->timeout); + } else { + t->ctrl &= ~(1 << 1); + } +} + +static void ftpwmtmr010_reset(DeviceState *ds) +{ + SysBusDevice *busdev = SYS_BUS_DEVICE(ds); + Ftpwmtmr010State *s = FTPWMTMR010(FROM_SYSBUS(Ftpwmtmr010State, busdev)); + int i; + + s->stat = 0; + + for (i = 0; i < 8; ++i) { + s->timer[i].ctrl = 0; + s->timer[i].cntb = 0; + s->timer[i].timeout = 0; + qemu_irq_lower(s->timer[i].irq); + qemu_del_timer(s->timer[i].qtimer); + } +} + +static int ftpwmtmr010_init(SysBusDevice *busdev) +{ + Ftpwmtmr010State *s = FTPWMTMR010(FROM_SYSBUS(Ftpwmtmr010State, busdev)); + int i; + + s->step = (uint64_t)get_ticks_per_sec() / (uint64_t)s->freq; + + DPRINTF("ftpwmtmr010 freq=%d\n", s->freq); + + memory_region_init_io(&s->iomem, + &ftpwmtmr010_ops, + s, + TYPE_FTPWMTMR010, + 0x1000); + sysbus_init_mmio(busdev, &s->iomem); + for (i = 0; i < 8; ++i) { + s->timer[i].id = i; + s->timer[i].chip = s; + s->timer[i].qtimer = qemu_new_timer_ns( + vm_clock, + ftpwmtmr010_timer_tick, + &s->timer[i]); + sysbus_init_irq(busdev, &s->timer[i].irq); + } + + return 0; +} + +static const VMStateDescription vmstate_ftpwmtmr010_timer = { + .name = TYPE_FTPWMTMR010_TIMER, + .version_id = 2, + .minimum_version_id = 2, + .minimum_version_id_old = 2, + .fields = (VMStateField[]) { + VMSTATE_UINT32(ctrl, Ftpwmtmr010Timer), + VMSTATE_UINT32(cntb, Ftpwmtmr010Timer), + VMSTATE_END_OF_LIST(), + }, +}; + +static const VMStateDescription vmstate_ftpwmtmr010 = { + .name = TYPE_FTPWMTMR010, + .version_id = 1, + .minimum_version_id = 1, + .minimum_version_id_old = 1, + .fields = (VMStateField[]) { + VMSTATE_UINT32(stat, Ftpwmtmr010State), + VMSTATE_UINT32(freq, Ftpwmtmr010State), + VMSTATE_UINT32(step, Ftpwmtmr010State), + VMSTATE_STRUCT_ARRAY(timer, Ftpwmtmr010State, 8, 1, + vmstate_ftpwmtmr010_timer, Ftpwmtmr010Timer), + VMSTATE_END_OF_LIST(), + } +}; + +static Property ftpwmtmr010_properties[] = { + DEFINE_PROP_UINT32("freq", Ftpwmtmr010State, freq, 66000000), + DEFINE_PROP_END_OF_LIST(), +}; + +static void ftpwmtmr010_class_init(ObjectClass *klass, void *data) +{ + SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); + DeviceClass *dc = DEVICE_CLASS(klass); + + k->init = ftpwmtmr010_init; + dc->vmsd = &vmstate_ftpwmtmr010; + dc->props = ftpwmtmr010_properties; + dc->reset = ftpwmtmr010_reset; + dc->no_user = 1; +} + +static const TypeInfo ftpwmtmr010_info = { + .name = TYPE_FTPWMTMR010, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(Ftpwmtmr010State), + .class_init = ftpwmtmr010_class_init, +}; + +static void ftpwmtmr010_register_types(void) +{ + type_register_static(&ftpwmtmr010_info); +} + +type_init(ftpwmtmr010_register_types) diff --git a/hw/arm/ftpwmtmr010.h b/hw/arm/ftpwmtmr010.h new file mode 100644 index 0000000..83f572a --- /dev/null +++ b/hw/arm/ftpwmtmr010.h @@ -0,0 +1,25 @@ +/* + * Faraday FTPWMTMR010 Timer. + * + * Copyright (c) 2012 Faraday Technology + * Written by Dante Su <dant...@faraday-tech.com> + * + * This code is licensed under GNU GPL v2+. + */ + +#ifndef HW_ARM_FTPWMTMR010_H +#define HW_ARM_FTPWMTMR010_H + +#define REG_STAT 0x00 +#define REG_TIMER_BASE(id) (0x00 + ((id) << 4)) +#define REG_TIMER_CTRL 0x00 +#define REG_TIMER_CNTB 0x04 +#define REG_TIMER_CMPB 0x08 +#define REG_TIMER_CNTO 0x0C + +#define TIMER_CTRL_START (1 << 1) +#define TIMER_CTRL_UPDATE (1 << 2) +#define TIMER_CTRL_AUTORELOAD (1 << 4) +#define TIMER_CTRL_INTEN (1 << 5) + +#endif -- 1.7.9.5