diff options
Diffstat (limited to 'hw/puv3_ost.c')
-rw-r--r-- | hw/puv3_ost.c | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/hw/puv3_ost.c b/hw/puv3_ost.c deleted file mode 100644 index 10a522adbb..0000000000 --- a/hw/puv3_ost.c +++ /dev/null @@ -1,151 +0,0 @@ -/* - * OSTimer device simulation in PKUnity SoC - * - * Copyright (C) 2010-2012 Guan Xuetao - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation, or any later version. - * See the COPYING file in the top-level directory. - */ -#include "hw/sysbus.h" -#include "hw/ptimer.h" - -#undef DEBUG_PUV3 -#include "hw/puv3.h" - -/* puv3 ostimer implementation. */ -typedef struct { - SysBusDevice busdev; - MemoryRegion iomem; - QEMUBH *bh; - qemu_irq irq; - ptimer_state *ptimer; - - uint32_t reg_OSMR0; - uint32_t reg_OSCR; - uint32_t reg_OSSR; - uint32_t reg_OIER; -} PUV3OSTState; - -static uint64_t puv3_ost_read(void *opaque, hwaddr offset, - unsigned size) -{ - PUV3OSTState *s = opaque; - uint32_t ret = 0; - - switch (offset) { - case 0x10: /* Counter Register */ - ret = s->reg_OSMR0 - (uint32_t)ptimer_get_count(s->ptimer); - break; - case 0x14: /* Status Register */ - ret = s->reg_OSSR; - break; - case 0x1c: /* Interrupt Enable Register */ - ret = s->reg_OIER; - break; - default: - DPRINTF("Bad offset %x\n", (int)offset); - } - DPRINTF("offset 0x%x, value 0x%x\n", offset, ret); - return ret; -} - -static void puv3_ost_write(void *opaque, hwaddr offset, - uint64_t value, unsigned size) -{ - PUV3OSTState *s = opaque; - - DPRINTF("offset 0x%x, value 0x%x\n", offset, value); - switch (offset) { - case 0x00: /* Match Register 0 */ - s->reg_OSMR0 = value; - if (s->reg_OSMR0 > s->reg_OSCR) { - ptimer_set_count(s->ptimer, s->reg_OSMR0 - s->reg_OSCR); - } else { - ptimer_set_count(s->ptimer, s->reg_OSMR0 + - (0xffffffff - s->reg_OSCR)); - } - ptimer_run(s->ptimer, 2); - break; - case 0x14: /* Status Register */ - assert(value == 0); - if (s->reg_OSSR) { - s->reg_OSSR = value; - qemu_irq_lower(s->irq); - } - break; - case 0x1c: /* Interrupt Enable Register */ - s->reg_OIER = value; - break; - default: - DPRINTF("Bad offset %x\n", (int)offset); - } -} - -static const MemoryRegionOps puv3_ost_ops = { - .read = puv3_ost_read, - .write = puv3_ost_write, - .impl = { - .min_access_size = 4, - .max_access_size = 4, - }, - .endianness = DEVICE_NATIVE_ENDIAN, -}; - -static void puv3_ost_tick(void *opaque) -{ - PUV3OSTState *s = opaque; - - DPRINTF("ost hit when ptimer counter from 0x%x to 0x%x!\n", - s->reg_OSCR, s->reg_OSMR0); - - s->reg_OSCR = s->reg_OSMR0; - if (s->reg_OIER) { - s->reg_OSSR = 1; - qemu_irq_raise(s->irq); - } -} - -static int puv3_ost_init(SysBusDevice *dev) -{ - PUV3OSTState *s = FROM_SYSBUS(PUV3OSTState, dev); - - s->reg_OIER = 0; - s->reg_OSSR = 0; - s->reg_OSMR0 = 0; - s->reg_OSCR = 0; - - sysbus_init_irq(dev, &s->irq); - - s->bh = qemu_bh_new(puv3_ost_tick, s); - s->ptimer = ptimer_init(s->bh); - ptimer_set_freq(s->ptimer, 50 * 1000 * 1000); - - memory_region_init_io(&s->iomem, &puv3_ost_ops, s, "puv3_ost", - PUV3_REGS_OFFSET); - sysbus_init_mmio(dev, &s->iomem); - - return 0; -} - -static void puv3_ost_class_init(ObjectClass *klass, void *data) -{ - SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass); - - sdc->init = puv3_ost_init; -} - -static const TypeInfo puv3_ost_info = { - .name = "puv3_ost", - .parent = TYPE_SYS_BUS_DEVICE, - .instance_size = sizeof(PUV3OSTState), - .class_init = puv3_ost_class_init, -}; - -static void puv3_ost_register_type(void) -{ - type_register_static(&puv3_ost_info); -} - -type_init(puv3_ost_register_type) |