diff options
Diffstat (limited to 'hw/syborg_keyboard.c')
| -rw-r--r-- | hw/syborg_keyboard.c | 215 |
1 files changed, 0 insertions, 215 deletions
diff --git a/hw/syborg_keyboard.c b/hw/syborg_keyboard.c deleted file mode 100644 index 942a7dc800..0000000000 --- a/hw/syborg_keyboard.c +++ /dev/null @@ -1,215 +0,0 @@ -/* - * Syborg keyboard 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 "console.h" -#include "syborg.h" - -//#define DEBUG_SYBORG_KEYBOARD - -#ifdef DEBUG_SYBORG_KEYBOARD -#define DPRINTF(fmt, ...) \ -do { printf("syborg_keyboard: " fmt , ##args); } while (0) -#define BADF(fmt, ...) \ -do { fprintf(stderr, "syborg_keyboard: error: " fmt , ## __VA_ARGS__); \ - exit(1);} while (0) -#else -#define DPRINTF(fmt, ...) do {} while(0) -#define BADF(fmt, ...) \ -do { fprintf(stderr, "syborg_keyboard: error: " fmt , ## __VA_ARGS__); \ -} while (0) -#endif - -enum { - KBD_ID = 0, - KBD_DATA = 1, - KBD_FIFO_COUNT = 2, - KBD_INT_ENABLE = 3, - KBD_FIFO_SIZE = 4 -}; - -typedef struct { - SysBusDevice busdev; - MemoryRegion iomem; - uint32_t int_enabled; - int extension_bit; - uint32_t fifo_size; - uint32_t *key_fifo; - uint32_t read_pos, read_count; - qemu_irq irq; -} SyborgKeyboardState; - -static void syborg_keyboard_update(SyborgKeyboardState *s) -{ - int level = s->read_count && s->int_enabled; - DPRINTF("Update IRQ %d\n", level); - qemu_set_irq(s->irq, level); -} - -static uint64_t syborg_keyboard_read(void *opaque, target_phys_addr_t offset, - unsigned size) -{ - SyborgKeyboardState *s = (SyborgKeyboardState *)opaque; - int c; - - DPRINTF("reg read %d\n", (int)offset); - offset &= 0xfff; - switch (offset >> 2) { - case KBD_ID: - return SYBORG_ID_KEYBOARD; - case KBD_FIFO_COUNT: - return s->read_count; - case KBD_DATA: - if (s->read_count == 0) { - c = -1; - DPRINTF("FIFO underflow\n"); - } else { - c = s->key_fifo[s->read_pos]; - DPRINTF("FIFO read 0x%x\n", c); - s->read_count--; - s->read_pos++; - if (s->read_pos == s->fifo_size) - s->read_pos = 0; - } - syborg_keyboard_update(s); - return c; - case KBD_INT_ENABLE: - return s->int_enabled; - case KBD_FIFO_SIZE: - return s->fifo_size; - default: - cpu_abort(cpu_single_env, "syborg_keyboard_read: Bad offset %x\n", - (int)offset); - return 0; - } -} - -static void syborg_keyboard_write(void *opaque, target_phys_addr_t offset, - uint64_t value, unsigned size) -{ - SyborgKeyboardState *s = (SyborgKeyboardState *)opaque; - - DPRINTF("reg write %d\n", (int)offset); - offset &= 0xfff; - switch (offset >> 2) { - case KBD_INT_ENABLE: - s->int_enabled = value; - syborg_keyboard_update(s); - break; - default: - cpu_abort(cpu_single_env, "syborg_keyboard_write: Bad offset %x\n", - (int)offset); - } -} - -static const MemoryRegionOps syborg_keyboard_ops = { - .read = syborg_keyboard_read, - .write = syborg_keyboard_write, - .endianness = DEVICE_NATIVE_ENDIAN, -}; - -static void syborg_keyboard_event(void *opaque, int keycode) -{ - SyborgKeyboardState *s = (SyborgKeyboardState *)opaque; - int slot; - uint32_t val; - - /* Strip off 0xe0 prefixes and reconstruct the full scancode. */ - if (keycode == 0xe0 && !s->extension_bit) { - DPRINTF("Extension bit\n"); - s->extension_bit = 0x80; - return; - } - val = (keycode & 0x7f) | s->extension_bit; - if (keycode & 0x80) - val |= 0x80000000u; - s->extension_bit = 0; - - DPRINTF("FIFO push 0x%x\n", val); - slot = s->read_pos + s->read_count; - if (slot >= s->fifo_size) - slot -= s->fifo_size; - - if (s->read_count < s->fifo_size) { - s->read_count++; - s->key_fifo[slot] = val; - } else { - fprintf(stderr, "syborg_keyboard error! FIFO overflow\n"); - } - - syborg_keyboard_update(s); -} - -static const VMStateDescription vmstate_syborg_keyboard = { - .name = "syborg_keyboard", - .version_id = 1, - .minimum_version_id = 1, - .minimum_version_id_old = 1, - .fields = (VMStateField[]) { - VMSTATE_UINT32_EQUAL(fifo_size, SyborgKeyboardState), - VMSTATE_UINT32(int_enabled, SyborgKeyboardState), - VMSTATE_UINT32(read_pos, SyborgKeyboardState), - VMSTATE_UINT32(read_count, SyborgKeyboardState), - VMSTATE_VARRAY_UINT32(key_fifo, SyborgKeyboardState, fifo_size, 1, - vmstate_info_uint32, uint32), - VMSTATE_END_OF_LIST() - } -}; - -static int syborg_keyboard_init(SysBusDevice *dev) -{ - SyborgKeyboardState *s = FROM_SYSBUS(SyborgKeyboardState, dev); - - sysbus_init_irq(dev, &s->irq); - memory_region_init_io(&s->iomem, &syborg_keyboard_ops, s, - "keyboard", 0x1000); - sysbus_init_mmio(dev, &s->iomem); - if (s->fifo_size <= 0) { - fprintf(stderr, "syborg_keyboard: fifo too small\n"); - s->fifo_size = 16; - } - s->key_fifo = g_malloc0(s->fifo_size * sizeof(s->key_fifo[0])); - - qemu_add_kbd_event_handler(syborg_keyboard_event, s); - - vmstate_register(&dev->qdev, -1, &vmstate_syborg_keyboard, s); - return 0; -} - -static SysBusDeviceInfo syborg_keyboard_info = { - .init = syborg_keyboard_init, - .qdev.name = "syborg,keyboard", - .qdev.size = sizeof(SyborgKeyboardState), - .qdev.props = (Property[]) { - DEFINE_PROP_UINT32("fifo-size", SyborgKeyboardState, fifo_size, 16), - DEFINE_PROP_END_OF_LIST(), - } -}; - -static void syborg_keyboard_register_devices(void) -{ - sysbus_register_withprop(&syborg_keyboard_info); -} - -device_init(syborg_keyboard_register_devices) |