aboutsummaryrefslogtreecommitdiff
path: root/hw/syborg_pointer.c
diff options
context:
space:
mode:
Diffstat (limited to 'hw/syborg_pointer.c')
-rw-r--r--hw/syborg_pointer.c220
1 files changed, 0 insertions, 220 deletions
diff --git a/hw/syborg_pointer.c b/hw/syborg_pointer.c
deleted file mode 100644
index bb75fa42c8..0000000000
--- a/hw/syborg_pointer.c
+++ /dev/null
@@ -1,220 +0,0 @@
-/*
- * Syborg pointing device (mouse/touchscreen)
- *
- * 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"
-
-enum {
- POINTER_ID = 0,
- POINTER_LATCH = 1,
- POINTER_FIFO_COUNT = 2,
- POINTER_X = 3,
- POINTER_Y = 4,
- POINTER_Z = 5,
- POINTER_BUTTONS = 6,
- POINTER_INT_ENABLE = 7,
- POINTER_FIFO_SIZE = 8
-};
-
-typedef struct {
- int x, y, z, pointer_buttons;
-} event_data;
-
-typedef struct {
- SysBusDevice busdev;
- MemoryRegion iomem;
- int int_enabled;
- uint32_t fifo_size;
- event_data *event_fifo;
- int read_pos, read_count;
- qemu_irq irq;
- uint32_t absolute;
-} SyborgPointerState;
-
-static void syborg_pointer_update(SyborgPointerState *s)
-{
- qemu_set_irq(s->irq, s->read_count && s->int_enabled);
-}
-
-static uint64_t syborg_pointer_read(void *opaque, target_phys_addr_t offset,
- unsigned size)
-{
- SyborgPointerState *s = (SyborgPointerState *)opaque;
-
- offset &= 0xfff;
- switch (offset >> 2) {
- case POINTER_ID:
- return s->absolute ? SYBORG_ID_TOUCHSCREEN : SYBORG_ID_MOUSE;
- case POINTER_FIFO_COUNT:
- return s->read_count;
- case POINTER_X:
- return s->event_fifo[s->read_pos].x;
- case POINTER_Y:
- return s->event_fifo[s->read_pos].y;
- case POINTER_Z:
- return s->event_fifo[s->read_pos].z;
- case POINTER_BUTTONS:
- return s->event_fifo[s->read_pos].pointer_buttons;
- case POINTER_INT_ENABLE:
- return s->int_enabled;
- case POINTER_FIFO_SIZE:
- return s->fifo_size;
- default:
- cpu_abort(cpu_single_env, "syborg_pointer_read: Bad offset %x\n",
- (int)offset);
- return 0;
- }
-}
-
-static void syborg_pointer_write(void *opaque, target_phys_addr_t offset,
- uint64_t value, unsigned size)
-{
- SyborgPointerState *s = (SyborgPointerState *)opaque;
-
- offset &= 0xfff;
- switch (offset >> 2) {
- case POINTER_LATCH:
- if (s->read_count > 0) {
- s->read_count--;
- if (++s->read_pos == s->fifo_size)
- s->read_pos = 0;
- }
- break;
- case POINTER_INT_ENABLE:
- s->int_enabled = value;
- break;
- default:
- cpu_abort(cpu_single_env, "syborg_pointer_write: Bad offset %x\n",
- (int)offset);
- }
- syborg_pointer_update(s);
-}
-
-static const MemoryRegionOps syborg_pointer_ops = {
- .read = syborg_pointer_read,
- .write = syborg_pointer_write,
- .endianness = DEVICE_NATIVE_ENDIAN,
-};
-
-static void syborg_pointer_event(void *opaque, int dx, int dy, int dz,
- int buttons_state)
-{
- SyborgPointerState *s = (SyborgPointerState *)opaque;
- int slot = s->read_pos + s->read_count;
-
- /* This first FIFO entry is used to store current register state. */
- if (s->read_count < s->fifo_size - 1) {
- s->read_count++;
- slot++;
- }
-
- if (slot >= s->fifo_size)
- slot -= s->fifo_size;
-
- if (s->read_count == s->fifo_size && !s->absolute) {
- /* Merge existing entries. */
- s->event_fifo[slot].x += dx;
- s->event_fifo[slot].y += dy;
- s->event_fifo[slot].z += dz;
- } else {
- s->event_fifo[slot].x = dx;
- s->event_fifo[slot].y = dy;
- s->event_fifo[slot].z = dz;
- }
- s->event_fifo[slot].pointer_buttons = buttons_state;
-
- syborg_pointer_update(s);
-}
-
-static const VMStateDescription vmstate_event_data = {
- .name = "dbma_channel",
- .version_id = 0,
- .minimum_version_id = 0,
- .minimum_version_id_old = 0,
- .fields = (VMStateField[]) {
- VMSTATE_INT32(x, event_data),
- VMSTATE_INT32(y, event_data),
- VMSTATE_INT32(z, event_data),
- VMSTATE_INT32(pointer_buttons, event_data),
- VMSTATE_END_OF_LIST()
- }
-};
-
-static const VMStateDescription vmstate_syborg_pointer = {
- .name = "syborg_pointer",
- .version_id = 1,
- .minimum_version_id = 1,
- .minimum_version_id_old = 1,
- .fields = (VMStateField[]) {
- VMSTATE_UINT32_EQUAL(fifo_size, SyborgPointerState),
- VMSTATE_UINT32_EQUAL(absolute, SyborgPointerState),
- VMSTATE_INT32(int_enabled, SyborgPointerState),
- VMSTATE_INT32(read_pos, SyborgPointerState),
- VMSTATE_INT32(read_count, SyborgPointerState),
- VMSTATE_STRUCT_VARRAY_UINT32(event_fifo, SyborgPointerState, fifo_size,
- 1, vmstate_event_data, event_data),
- VMSTATE_END_OF_LIST()
- }
-};
-
-static int syborg_pointer_init(SysBusDevice *dev)
-{
- SyborgPointerState *s = FROM_SYSBUS(SyborgPointerState, dev);
-
- sysbus_init_irq(dev, &s->irq);
- memory_region_init_io(&s->iomem, &syborg_pointer_ops, s,
- "pointer", 0x1000);
- sysbus_init_mmio(dev, &s->iomem);
-
- if (s->fifo_size <= 0) {
- fprintf(stderr, "syborg_pointer: fifo too small\n");
- s->fifo_size = 16;
- }
- s->event_fifo = g_malloc0(s->fifo_size * sizeof(s->event_fifo[0]));
-
- qemu_add_mouse_event_handler(syborg_pointer_event, s, s->absolute,
- "Syborg Pointer");
-
- vmstate_register(&dev->qdev, -1, &vmstate_syborg_pointer, s);
- return 0;
-}
-
-static SysBusDeviceInfo syborg_pointer_info = {
- .init = syborg_pointer_init,
- .qdev.name = "syborg,pointer",
- .qdev.size = sizeof(SyborgPointerState),
- .qdev.props = (Property[]) {
- DEFINE_PROP_UINT32("fifo-size", SyborgPointerState, fifo_size, 16),
- DEFINE_PROP_UINT32("absolute", SyborgPointerState, absolute, 1),
- DEFINE_PROP_END_OF_LIST(),
- }
-};
-
-static void syborg_pointer_register_devices(void)
-{
- sysbus_register_withprop(&syborg_pointer_info);
-}
-
-device_init(syborg_pointer_register_devices)
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-16 21:04:00 +0000