--- /dev/null
+/*
+ * QEMU VMMouse emulation
+ *
+ * Copyright (C) 2007 Anthony Liguori <anthony@codemonkey.ws>
+ *
+ * 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 "vl.h"
+
+/* debug only vmmouse */
+//#define DEBUG_VMMOUSE
+
+/* VMMouse Commands */
+#define VMMOUSE_GETVERSION 10
+#define VMMOUSE_DATA 39
+#define VMMOUSE_STATUS 40
+#define VMMOUSE_COMMAND 41
+
+#define VMMOUSE_READ_ID 0x45414552
+#define VMMOUSE_DISABLE 0x000000f5
+#define VMMOUSE_REQUEST_RELATIVE 0x4c455252
+#define VMMOUSE_REQUEST_ABSOLUTE 0x53424152
+
+#define VMMOUSE_QUEUE_SIZE 1024
+
+#define VMMOUSE_MAGIC 0x564D5868
+#define VMMOUSE_VERSION 0x3442554a
+
+#ifdef DEBUG_VMMOUSE
+#define DPRINTF(fmt, ...) printf(fmt, ## __VA_ARGS__)
+#else
+#define DPRINTF(fmt, ...) do { } while (0)
+#endif
+
+typedef struct _VMMouseState
+{
+ uint32_t queue[VMMOUSE_QUEUE_SIZE];
+ uint16_t nb_queue;
+ uint16_t status;
+ uint8_t absolute;
+ QEMUPutMouseEntry *entry;
+ void *ps2_mouse;
+} VMMouseState;
+
+static uint32_t vmmouse_get_version(VMMouseState *s, uint32_t *magic)
+{
+ DPRINTF("vmmouse_get_version(%x)\n", *magic);
+ *magic = VMMOUSE_MAGIC;
+ return VMMOUSE_VERSION;
+}
+
+static uint32_t vmmouse_get_status(VMMouseState *s)
+{
+ DPRINTF("vmmouse_get_status()\n");
+ return (s->status << 16) | s->nb_queue;
+}
+
+static void vmmouse_mouse_event(void *opaque, int x, int y, int dz, int buttons_state)
+{
+ VMMouseState *s = opaque;
+ int buttons = 0;
+
+ if (s->nb_queue > (VMMOUSE_QUEUE_SIZE - 4))
+ return;
+
+ DPRINTF("vmmouse_mouse_event(%d, %d, %d, %d)\n",
+ x, y, dz, buttons_state);
+
+ if ((buttons_state & MOUSE_EVENT_LBUTTON))
+ buttons |= 0x20;
+ if ((buttons_state & MOUSE_EVENT_RBUTTON))
+ buttons |= 0x10;
+ if ((buttons_state & MOUSE_EVENT_MBUTTON))
+ buttons |= 0x08;
+
+ if (s->absolute) {
+ x <<= 1;
+ y <<= 1;
+ }
+
+ s->queue[s->nb_queue++] = buttons;
+ s->queue[s->nb_queue++] = x;
+ s->queue[s->nb_queue++] = y;
+ s->queue[s->nb_queue++] = dz;
+
+ /* need to still generate PS2 events to notify driver to
+ read from queue */
+ ps2_mouse_fake_event(s->ps2_mouse);
+}
+
+static void vmmouse_update_handler(VMMouseState *s)
+{
+ if (s->entry) {
+ qemu_remove_mouse_event_handler(s->entry);
+ s->entry = NULL;
+ }
+ if (s->status == 0)
+ s->entry = qemu_add_mouse_event_handler(vmmouse_mouse_event,
+ s, s->absolute,
+ "vmmouse");
+}
+
+static void vmmouse_read_id(VMMouseState *s)
+{
+ DPRINTF("vmmouse_read_id()\n");
+
+ if (s->nb_queue == VMMOUSE_QUEUE_SIZE)
+ return;
+
+ s->queue[s->nb_queue++] = VMMOUSE_VERSION;
+ s->status = 0;
+ vmmouse_update_handler(s);
+}
+
+static void vmmouse_request_relative(VMMouseState *s)
+{
+ DPRINTF("vmmouse_request_relative()\n");
+ s->absolute = 0;
+ vmmouse_update_handler(s);
+}
+
+static void vmmouse_request_absolute(VMMouseState *s)
+{
+ DPRINTF("vmmouse_request_absolute()\n");
+ s->absolute = 1;
+ vmmouse_update_handler(s);
+}
+
+static void vmmouse_disable(VMMouseState *s)
+{
+ DPRINTF("vmmouse_disable()\n");
+ s->status = 0xffff;
+ vmmouse_update_handler(s);
+}
+
+static void vmmouse_data(VMMouseState *s, uint32_t *data, uint32_t size)
+{
+ int i;
+
+ DPRINTF("vmmouse_data(%d)\n", size);
+
+ if (size == 0 || size > 6 || size > s->nb_queue) {
+ printf("vmmouse: driver requested too much data %d\n", size);
+ s->status = 0xffff;
+ vmmouse_update_handler(s);
+ return;
+ }
+
+ for (i = 0; i < size; i++)
+ data[i] = s->queue[i];
+
+ s->nb_queue -= size;
+ if (s->nb_queue)
+ memmove(s->queue, &s->queue[size], sizeof(s->queue[0]) * s->nb_queue);
+}
+
+static void vmmouse_get_data(uint32_t *data)
+{
+ CPUState *env = cpu_single_env;
+
+ data[0] = env->regs[R_EAX]; data[1] = env->regs[R_EBX];
+ data[2] = env->regs[R_ECX]; data[3] = env->regs[R_EDX];
+ data[4] = env->regs[R_ESI]; data[5] = env->regs[R_EDI];
+
+ DPRINTF("get_data = {%x, %x, %x, %x, %x, %x}\n",
+ data[0], data[1], data[2], data[3], data[4], data[5]);
+}
+
+static void vmmouse_set_data(const uint32_t *data)
+{
+ CPUState *env = cpu_single_env;
+
+ DPRINTF("set_data = {%x, %x, %x, %x, %x, %x}\n",
+ data[0], data[1], data[2], data[3], data[4], data[5]);
+
+ env->regs[R_EAX] = data[0]; env->regs[R_EBX] = data[1];
+ env->regs[R_ECX] = data[2]; env->regs[R_EDX] = data[3];
+ env->regs[R_ESI] = data[4]; env->regs[R_EDI] = data[5];
+}
+
+static uint32_t vmmouse_ioport_read(void *opaque, uint32_t addr)
+{
+ VMMouseState *s = opaque;
+ uint32_t data[6];
+ uint16_t command;
+
+ vmmouse_get_data(data);
+ if (data[0] != VMMOUSE_MAGIC)
+ goto error;
+
+ command = data[2] & 0xFFFF;
+
+ switch (command) {
+ case VMMOUSE_GETVERSION:
+ data[0] = vmmouse_get_version(s, &data[1]);
+ break;
+ case VMMOUSE_STATUS:
+ data[0] = vmmouse_get_status(s);
+ break;
+ case VMMOUSE_COMMAND:
+ switch (data[1]) {
+ case VMMOUSE_DISABLE:
+ vmmouse_disable(s);
+ break;
+ case VMMOUSE_READ_ID:
+ vmmouse_read_id(s);
+ break;
+ case VMMOUSE_REQUEST_RELATIVE:
+ vmmouse_request_relative(s);
+ break;
+ case VMMOUSE_REQUEST_ABSOLUTE:
+ vmmouse_request_absolute(s);
+ break;
+ default:
+ printf("vmmouse: unknown command %x\n", data[1]);
+ break;
+ }
+ break;
+ case VMMOUSE_DATA:
+ vmmouse_data(s, data, data[1]);
+ break;
+ default:
+ printf("vmmouse: unknown command %x\n", command);
+ break;
+ }
+
+error:
+ vmmouse_set_data(data);
+ return data[0];
+}
+
+static void vmmouse_save(QEMUFile *f, void *opaque)
+{
+ VMMouseState *s = opaque;
+ int i;
+
+ qemu_put_be32(f, VMMOUSE_QUEUE_SIZE);
+ for (i = 0; i < VMMOUSE_QUEUE_SIZE; i++)
+ qemu_put_be32s(f, &s->queue[i]);
+ qemu_put_be16s(f, &s->nb_queue);
+ qemu_put_be16s(f, &s->status);
+ qemu_put_8s(f, &s->absolute);
+}
+
+static int vmmouse_load(QEMUFile *f, void *opaque, int version_id)
+{
+ VMMouseState *s = opaque;
+ int i;
+
+ if (version_id != 0)
+ return -EINVAL;
+
+ if (qemu_get_be32(f) != VMMOUSE_QUEUE_SIZE)
+ return -EINVAL;
+ for (i = 0; i < VMMOUSE_QUEUE_SIZE; i++)
+ qemu_get_be32s(f, &s->queue[i]);
+ qemu_get_be16s(f, &s->nb_queue);
+ qemu_get_be16s(f, &s->status);
+ qemu_get_8s(f, &s->absolute);
+
+ vmmouse_update_handler(s);
+
+ return 0;
+}
+
+void *vmmouse_init(void *m)
+{
+ VMMouseState *s = NULL;
+
+ DPRINTF("vmmouse_init\n");
+
+ s = qemu_mallocz(sizeof(VMMouseState));
+ if (!s)
+ return NULL;
+
+ s->status = 0xffff;
+ s->ps2_mouse = m;
+
+ register_ioport_read(0x5658, 1, 4, vmmouse_ioport_read, s);
+ register_savevm("vmmouse", 0, 0, vmmouse_save, vmmouse_load, s);
+
+ return s;
+}
+
projects / qemu / commitdiff