diff options
Diffstat (limited to 'hw/syborg_interrupt.c')
| -rw-r--r-- | hw/syborg_interrupt.c | 233 |
1 files changed, 0 insertions, 233 deletions
diff --git a/hw/syborg_interrupt.c b/hw/syborg_interrupt.c deleted file mode 100644 index 93e81c8660..0000000000 --- a/hw/syborg_interrupt.c +++ /dev/null @@ -1,233 +0,0 @@ -/* - * Syborg interrupt controller. - * - * 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 "syborg.h" - -//#define DEBUG_SYBORG_INT - -#ifdef DEBUG_SYBORG_INT -#define DPRINTF(fmt, ...) \ -do { printf("syborg_int: " fmt , ## __VA_ARGS__); } while (0) -#define BADF(fmt, ...) \ -do { fprintf(stderr, "syborg_int: error: " fmt , ## __VA_ARGS__); \ - exit(1);} while (0) -#else -#define DPRINTF(fmt, ...) do {} while(0) -#define BADF(fmt, ...) \ -do { fprintf(stderr, "syborg_int: error: " fmt , ## __VA_ARGS__);} while (0) -#endif -enum { - INT_ID = 0, - INT_STATUS = 1, /* number of pending interrupts */ - INT_CURRENT = 2, /* next interrupt to be serviced */ - INT_DISABLE_ALL = 3, - INT_DISABLE = 4, - INT_ENABLE = 5, - INT_TOTAL = 6 -}; - -typedef struct { - unsigned level:1; - unsigned enabled:1; -} syborg_int_flags; - -typedef struct { - SysBusDevice busdev; - MemoryRegion iomem; - int pending_count; - uint32_t num_irqs; - syborg_int_flags *flags; - qemu_irq parent_irq; -} SyborgIntState; - -static void syborg_int_update(SyborgIntState *s) -{ - DPRINTF("pending %d\n", s->pending_count); - qemu_set_irq(s->parent_irq, s->pending_count > 0); -} - -static void syborg_int_set_irq(void *opaque, int irq, int level) -{ - SyborgIntState *s = (SyborgIntState *)opaque; - - if (s->flags[irq].level == level) - return; - - s->flags[irq].level = level; - if (s->flags[irq].enabled) { - if (level) - s->pending_count++; - else - s->pending_count--; - syborg_int_update(s); - } -} - -static uint64_t syborg_int_read(void *opaque, target_phys_addr_t offset, - unsigned size) -{ - SyborgIntState *s = (SyborgIntState *)opaque; - int i; - - offset &= 0xfff; - switch (offset >> 2) { - case INT_ID: - return SYBORG_ID_INT; - case INT_STATUS: - DPRINTF("read status=%d\n", s->pending_count); - return s->pending_count; - - case INT_CURRENT: - for (i = 0; i < s->num_irqs; i++) { - if (s->flags[i].level & s->flags[i].enabled) { - DPRINTF("read current=%d\n", i); - return i; - } - } - DPRINTF("read current=none\n"); - return 0xffffffffu; - - default: - cpu_abort(cpu_single_env, "syborg_int_read: Bad offset %x\n", - (int)offset); - return 0; - } -} - -static void syborg_int_write(void *opaque, target_phys_addr_t offset, - uint64_t value, unsigned size) -{ - SyborgIntState *s = (SyborgIntState *)opaque; - int i; - offset &= 0xfff; - - DPRINTF("syborg_int_write offset=%d val=%d\n", (int)offset, (int)value); - switch (offset >> 2) { - case INT_DISABLE_ALL: - s->pending_count = 0; - for (i = 0; i < s->num_irqs; i++) - s->flags[i].enabled = 0; - break; - - case INT_DISABLE: - if (value >= s->num_irqs) - break; - if (s->flags[value].enabled) { - if (s->flags[value].enabled) - s->pending_count--; - s->flags[value].enabled = 0; - } - break; - - case INT_ENABLE: - if (value >= s->num_irqs) - break; - if (!(s->flags[value].enabled)) { - if(s->flags[value].level) - s->pending_count++; - s->flags[value].enabled = 1; - } - break; - - default: - cpu_abort(cpu_single_env, "syborg_int_write: Bad offset %x\n", - (int)offset); - return; - } - syborg_int_update(s); -} - -static const MemoryRegionOps syborg_int_ops = { - .read = syborg_int_read, - .write = syborg_int_write, - .endianness = DEVICE_NATIVE_ENDIAN, -}; - -static void syborg_int_save(QEMUFile *f, void *opaque) -{ - SyborgIntState *s = (SyborgIntState *)opaque; - int i; - - qemu_put_be32(f, s->num_irqs); - qemu_put_be32(f, s->pending_count); - for (i = 0; i < s->num_irqs; i++) { - qemu_put_be32(f, s->flags[i].enabled - | ((unsigned)s->flags[i].level << 1)); - } -} - -static int syborg_int_load(QEMUFile *f, void *opaque, int version_id) -{ - SyborgIntState *s = (SyborgIntState *)opaque; - uint32_t val; - int i; - - if (version_id != 1) - return -EINVAL; - - val = qemu_get_be32(f); - if (val != s->num_irqs) - return -EINVAL; - s->pending_count = qemu_get_be32(f); - for (i = 0; i < s->num_irqs; i++) { - val = qemu_get_be32(f); - s->flags[i].enabled = val & 1; - s->flags[i].level = (val >> 1) & 1; - } - return 0; -} - -static int syborg_int_init(SysBusDevice *dev) -{ - SyborgIntState *s = FROM_SYSBUS(SyborgIntState, dev); - - sysbus_init_irq(dev, &s->parent_irq); - qdev_init_gpio_in(&dev->qdev, syborg_int_set_irq, s->num_irqs); - memory_region_init_io(&s->iomem, &syborg_int_ops, s, - "interrupt", 0x1000); - sysbus_init_mmio(dev, &s->iomem); - s->flags = g_malloc0(s->num_irqs * sizeof(syborg_int_flags)); - - register_savevm(&dev->qdev, "syborg_int", -1, 1, syborg_int_save, - syborg_int_load, s); - return 0; -} - -static SysBusDeviceInfo syborg_int_info = { - .init = syborg_int_init, - .qdev.name = "syborg,interrupt", - .qdev.size = sizeof(SyborgIntState), - .qdev.props = (Property[]) { - DEFINE_PROP_UINT32("num-interrupts", SyborgIntState, num_irqs, 64), - DEFINE_PROP_END_OF_LIST(), - } -}; - -static void syborg_interrupt_register_devices(void) -{ - sysbus_register_withprop(&syborg_int_info); -} - -device_init(syborg_interrupt_register_devices) |