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-rw-r--r--hw/adb.c308
1 files changed, 308 insertions, 0 deletions
diff --git a/hw/adb.c b/hw/adb.c
new file mode 100644
index 0000000000..6442d796b6
--- /dev/null
+++ b/hw/adb.c
@@ -0,0 +1,308 @@
+/*
+ * QEMU ADB support
+ *
+ * Copyright (c) 2004 Fabrice Bellard
+ *
+ * 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"
+
+/* ADB commands */
+#define ADB_BUSRESET 0x00
+#define ADB_FLUSH 0x01
+#define ADB_WRITEREG 0x08
+#define ADB_READREG 0x0c
+
+/* ADB device commands */
+#define ADB_CMD_SELF_TEST 0xff
+#define ADB_CMD_CHANGE_ID 0xfe
+#define ADB_CMD_CHANGE_ID_AND_ACT 0xfd
+#define ADB_CMD_CHANGE_ID_AND_ENABLE 0x00
+
+/* ADB default device IDs (upper 4 bits of ADB command byte) */
+#define ADB_DONGLE 1
+#define ADB_KEYBOARD 2
+#define ADB_MOUSE 3
+#define ADB_TABLET 4
+#define ADB_MODEM 5
+#define ADB_MISC 7
+
+#define ADB_RET_OK 0
+#define ADB_RET_INUSE 1
+#define ADB_RET_NOTPRESENT 2
+#define ADB_RET_TIMEOUT 3
+#define ADB_RET_UNEXPECTED_RESULT 4
+#define ADB_RET_REQUEST_ERROR 5
+#define ADB_RET_BUS_ERROR 6
+
+
+static void adb_send_packet1(ADBBusState *s, uint8_t reply)
+{
+ adb_send_packet(s, &reply, 1);
+}
+
+void adb_receive_packet(ADBBusState *s, const uint8_t *buf, int len)
+{
+ ADBDevice *d;
+ int devaddr, cmd, i;
+ uint8_t obuf[4];
+
+ cmd = buf[1] & 0xf;
+ devaddr = buf[1] >> 4;
+ if (buf[1] == ADB_BUSRESET) {
+ obuf[0] = 0x00;
+ obuf[1] = 0x00;
+ adb_send_packet(s, obuf, 2);
+ return;
+ }
+ if (cmd == ADB_FLUSH) {
+ obuf[0] = 0x00;
+ obuf[1] = 0x00;
+ adb_send_packet(s, obuf, 2);
+ return;
+ }
+
+ for(i = 0; i < s->nb_devices; i++) {
+ d = &s->devices[i];
+ if (d->devaddr == devaddr) {
+ d->receive_packet(d, buf, len);
+ return;
+ }
+ }
+ adb_send_packet1(s, ADB_RET_NOTPRESENT);
+}
+
+ADBDevice *adb_register_device(ADBBusState *s, int devaddr,
+ ADBDeviceReceivePacket *receive_packet,
+ void *opaque)
+{
+ ADBDevice *d;
+ if (s->nb_devices >= MAX_ADB_DEVICES)
+ return NULL;
+ d = &s->devices[s->nb_devices++];
+ d->bus = s;
+ d->devaddr = devaddr;
+ d->receive_packet = receive_packet;
+ d->opaque = opaque;
+ return d;
+}
+
+/***************************************************************/
+/* Keyboard ADB device */
+
+static const uint8_t pc_to_adb_keycode[256] = {
+ 0, 53, 18, 19, 20, 21, 23, 22, 26, 28, 25, 29, 27, 24, 51, 48,
+ 12, 13, 14, 15, 17, 16, 32, 34, 31, 35, 33, 30, 36, 54, 0, 1,
+ 2, 3, 5, 4, 38, 40, 37, 41, 39, 50, 56, 42, 6, 7, 8, 9,
+ 11, 45, 46, 43, 47, 44,123, 67, 58, 49, 57,122,120, 99,118, 96,
+ 97, 98,100,101,109, 71,107, 89, 91, 92, 78, 86, 87, 88, 69, 83,
+ 84, 85, 82, 65, 0, 0, 10,103,111, 0, 0, 0, 0, 0, 0, 0,
+ 76,125, 75,105,124,110,115, 62,116, 59, 60,119, 61,121,114,117,
+ 0, 0, 0, 0,127, 81, 0,113, 0, 0, 0, 0, 95, 55, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 94, 0, 93, 0, 0, 0, 0, 0, 0,104,102,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+};
+
+static void adb_kbd_put_keycode(void *opaque, int keycode)
+{
+ static int ext_keycode;
+ ADBDevice *d = opaque;
+ uint8_t buf[4];
+ int adb_keycode;
+
+ if (keycode == 0xe0) {
+ ext_keycode = 1;
+ } else {
+
+ if (ext_keycode)
+ adb_keycode = pc_to_adb_keycode[keycode | 0x80];
+ else
+ adb_keycode = pc_to_adb_keycode[keycode & 0x7f];
+
+ buf[0] = 0x40;
+ buf[1] = (d->devaddr << 4) | 0x0c;
+ buf[2] = adb_keycode | (keycode & 0x80);
+ buf[3] = 0xff;
+ adb_send_packet(d->bus, buf, 4);
+ ext_keycode = 0;
+ }
+}
+
+static void adb_kbd_receive_packet(ADBDevice *d, const uint8_t *buf, int len)
+{
+ int cmd, reg;
+ uint8_t obuf[4];
+
+ cmd = buf[0] & 0xc;
+ reg = buf[0] & 0x3;
+ switch(cmd) {
+ case ADB_WRITEREG:
+ switch(reg) {
+ case 2:
+ /* LED status */
+ adb_send_packet1(d->bus, ADB_RET_OK);
+ break;
+ case 3:
+ switch(buf[2]) {
+ case ADB_CMD_SELF_TEST:
+ adb_send_packet1(d->bus, ADB_RET_OK);
+ break;
+ case ADB_CMD_CHANGE_ID:
+ case ADB_CMD_CHANGE_ID_AND_ACT:
+ case ADB_CMD_CHANGE_ID_AND_ENABLE:
+ d->devaddr = buf[1] & 0xf;
+ adb_send_packet1(d->bus, ADB_RET_OK);
+ break;
+ default:
+ /* XXX: check this */
+ d->devaddr = buf[1] & 0xf;
+ d->handler = buf[2];
+ adb_send_packet1(d->bus, ADB_RET_OK);
+ break;
+ }
+ }
+ break;
+ case ADB_READREG:
+ switch(reg) {
+ case 1:
+ adb_send_packet1(d->bus, ADB_RET_OK);
+ break;
+ case 2:
+ obuf[0] = ADB_RET_OK;
+ obuf[1] = 0x00; /* XXX: check this */
+ obuf[2] = 0x07; /* led status */
+ adb_send_packet(d->bus, obuf, 3);
+ break;
+ case 3:
+ obuf[0] = ADB_RET_OK;
+ obuf[1] = d->handler;
+ obuf[2] = d->devaddr;
+ adb_send_packet(d->bus, obuf, 3);
+ break;
+ }
+ break;
+ }
+}
+
+void adb_kbd_init(ADBBusState *bus)
+{
+ ADBDevice *d;
+
+ d = adb_register_device(bus, ADB_KEYBOARD, adb_kbd_receive_packet, NULL);
+ qemu_add_kbd_event_handler(adb_kbd_put_keycode, d);
+}
+
+/***************************************************************/
+/* Mouse ADB device */
+
+static void adb_mouse_event(void *opaque,
+ int dx1, int dy1, int dz1, int buttons_state)
+{
+ ADBDevice *d = opaque;
+ uint8_t buf[4];
+ int dx, dy;
+
+ dx = dx1;
+ if (dx < -63)
+ dx = -63;
+ else if (dx > 63)
+ dx = 63;
+
+ dy = dy1;
+ if (dy < -63)
+ dy = -63;
+ else if (dy > 63)
+ dy = 63;
+
+ dx &= 0x7f;
+ dy &= 0x7f;
+
+ if (buttons_state & MOUSE_EVENT_LBUTTON)
+ dy |= 0x80;
+ if (buttons_state & MOUSE_EVENT_RBUTTON)
+ dx |= 0x80;
+
+ buf[0] = 0x40;
+ buf[1] = (d->devaddr << 4) | 0x0c;
+ buf[2] = dy;
+ buf[3] = dx;
+ adb_send_packet(d->bus, buf, 4);
+}
+
+static void adb_mouse_receive_packet(ADBDevice *d, const uint8_t *buf, int len)
+{
+ int cmd, reg;
+ uint8_t obuf[4];
+
+ cmd = buf[0] & 0xc;
+ reg = buf[0] & 0x3;
+ switch(cmd) {
+ case ADB_WRITEREG:
+ switch(reg) {
+ case 2:
+ adb_send_packet1(d->bus, ADB_RET_OK);
+ break;
+ case 3:
+ switch(buf[2]) {
+ case ADB_CMD_SELF_TEST:
+ adb_send_packet1(d->bus, ADB_RET_OK);
+ break;
+ case ADB_CMD_CHANGE_ID:
+ case ADB_CMD_CHANGE_ID_AND_ACT:
+ case ADB_CMD_CHANGE_ID_AND_ENABLE:
+ d->devaddr = buf[1] & 0xf;
+ adb_send_packet1(d->bus, ADB_RET_OK);
+ break;
+ default:
+ /* XXX: check this */
+ d->devaddr = buf[1] & 0xf;
+ adb_send_packet1(d->bus, ADB_RET_OK);
+ break;
+ }
+ }
+ break;
+ case ADB_READREG:
+ switch(reg) {
+ case 1:
+ adb_send_packet1(d->bus, ADB_RET_OK);
+ break;
+ case 3:
+ obuf[0] = ADB_RET_OK;
+ obuf[1] = d->handler;
+ obuf[2] = d->devaddr;
+ adb_send_packet(d->bus, obuf, 3);
+ break;
+ }
+ break;
+ }
+}
+
+void adb_mouse_init(ADBBusState *bus)
+{
+ ADBDevice *d;
+
+ d = adb_register_device(bus, ADB_MOUSE, adb_mouse_receive_packet, NULL);
+ qemu_add_mouse_event_handler(adb_mouse_event, d);
+}
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