root / hw / input / adb.c @ a8aec295
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/*
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* QEMU ADB support
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*
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* Copyright (c) 2004 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "hw/hw.h" |
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#include "hw/input/adb.h" |
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#include "ui/console.h" |
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|
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/* debug ADB */
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//#define DEBUG_ADB
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|
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#ifdef DEBUG_ADB
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#define ADB_DPRINTF(fmt, ...) \
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do { printf("ADB: " fmt , ## __VA_ARGS__); } while (0) |
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#else
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#define ADB_DPRINTF(fmt, ...)
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#endif
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|
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/* ADB commands */
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#define ADB_BUSRESET 0x00 |
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#define ADB_FLUSH 0x01 |
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#define ADB_WRITEREG 0x08 |
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#define ADB_READREG 0x0c |
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|
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/* ADB device commands */
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#define ADB_CMD_SELF_TEST 0xff |
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#define ADB_CMD_CHANGE_ID 0xfe |
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#define ADB_CMD_CHANGE_ID_AND_ACT 0xfd |
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#define ADB_CMD_CHANGE_ID_AND_ENABLE 0x00 |
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|
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/* ADB default device IDs (upper 4 bits of ADB command byte) */
|
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#define ADB_DEVID_DONGLE 1 |
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#define ADB_DEVID_KEYBOARD 2 |
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#define ADB_DEVID_MOUSE 3 |
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#define ADB_DEVID_TABLET 4 |
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#define ADB_DEVID_MODEM 5 |
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#define ADB_DEVID_MISC 7 |
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|
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/* error codes */
|
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#define ADB_RET_NOTPRESENT (-2) |
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|
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static void adb_device_reset(ADBDevice *d) |
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{
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qdev_reset_all(DEVICE(d)); |
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} |
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|
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int adb_request(ADBBusState *s, uint8_t *obuf, const uint8_t *buf, int len) |
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{
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ADBDevice *d; |
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int devaddr, cmd, i;
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|
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cmd = buf[0] & 0xf; |
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if (cmd == ADB_BUSRESET) {
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for(i = 0; i < s->nb_devices; i++) { |
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d = s->devices[i]; |
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adb_device_reset(d); |
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} |
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return 0; |
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} |
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devaddr = buf[0] >> 4; |
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for(i = 0; i < s->nb_devices; i++) { |
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d = s->devices[i]; |
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if (d->devaddr == devaddr) {
|
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ADBDeviceClass *adc = ADB_DEVICE_GET_CLASS(d); |
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return adc->devreq(d, obuf, buf, len);
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} |
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} |
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return ADB_RET_NOTPRESENT;
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} |
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|
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/* XXX: move that to cuda ? */
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int adb_poll(ADBBusState *s, uint8_t *obuf)
|
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{
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ADBDevice *d; |
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int olen, i;
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uint8_t buf[1];
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|
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olen = 0;
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for(i = 0; i < s->nb_devices; i++) { |
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if (s->poll_index >= s->nb_devices)
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s->poll_index = 0;
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d = s->devices[s->poll_index]; |
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buf[0] = ADB_READREG | (d->devaddr << 4); |
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olen = adb_request(s, obuf + 1, buf, 1); |
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/* if there is data, we poll again the same device */
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if (olen > 0) { |
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obuf[0] = buf[0]; |
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olen++; |
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break;
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} |
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s->poll_index++; |
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} |
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return olen;
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} |
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|
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static const TypeInfo adb_bus_type_info = { |
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.name = TYPE_ADB_BUS, |
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.parent = TYPE_BUS, |
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.instance_size = sizeof(ADBBusState),
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}; |
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|
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static void adb_device_realizefn(DeviceState *dev, Error **errp) |
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{
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ADBDevice *d = ADB_DEVICE(dev); |
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ADBBusState *bus = ADB_BUS(qdev_get_parent_bus(dev)); |
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|
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if (bus->nb_devices >= MAX_ADB_DEVICES) {
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return;
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} |
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|
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bus->devices[bus->nb_devices++] = d; |
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} |
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static void adb_device_class_init(ObjectClass *oc, void *data) |
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{
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DeviceClass *dc = DEVICE_CLASS(oc); |
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|
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dc->realize = adb_device_realizefn; |
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dc->bus_type = TYPE_ADB_BUS; |
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} |
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|
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static const TypeInfo adb_device_type_info = { |
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.name = TYPE_ADB_DEVICE, |
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.parent = TYPE_DEVICE, |
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.instance_size = sizeof(ADBDevice),
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.abstract = true,
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.class_init = adb_device_class_init, |
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}; |
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/***************************************************************/
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/* Keyboard ADB device */
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#define ADB_KEYBOARD(obj) OBJECT_CHECK(KBDState, (obj), TYPE_ADB_KEYBOARD)
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typedef struct KBDState { |
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/*< private >*/
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ADBDevice parent_obj; |
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/*< public >*/
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uint8_t data[128];
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int rptr, wptr, count;
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} KBDState; |
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#define ADB_KEYBOARD_CLASS(class) \
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OBJECT_CLASS_CHECK(ADBKeyboardClass, (class), TYPE_ADB_KEYBOARD) |
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#define ADB_KEYBOARD_GET_CLASS(obj) \
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OBJECT_GET_CLASS(ADBKeyboardClass, (obj), TYPE_ADB_KEYBOARD) |
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typedef struct ADBKeyboardClass { |
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/*< private >*/
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ADBDeviceClass parent_class; |
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/*< public >*/
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|
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DeviceRealize parent_realize; |
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} ADBKeyboardClass; |
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|
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static const uint8_t pc_to_adb_keycode[256] = { |
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0, 53, 18, 19, 20, 21, 23, 22, 26, 28, 25, 29, 27, 24, 51, 48, |
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12, 13, 14, 15, 17, 16, 32, 34, 31, 35, 33, 30, 36, 54, 0, 1, |
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2, 3, 5, 4, 38, 40, 37, 41, 39, 50, 56, 42, 6, 7, 8, 9, |
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11, 45, 46, 43, 47, 44,123, 67, 58, 49, 57,122,120, 99,118, 96, |
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97, 98,100,101,109, 71,107, 89, 91, 92, 78, 86, 87, 88, 69, 83, |
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84, 85, 82, 65, 0, 0, 10,103,111, 0, 0,110, 81, 0, 0, 0, |
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
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0, 0, 0, 94, 0, 93, 0, 0, 0, 0, 0, 0,104,102, 0, 0, |
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 76,125, 0, 0, |
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0,105, 0, 0, 0, 0, 0, |
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0, 0, 0, 0, 0, 75, 0, 0,124, 0, 0, 0, 0, 0, 0, 0, |
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0, 0, 0, 0, 0, 0, 0,115, 62,116, 0, 59, 0, 60, 0,119, |
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61,121,114,117, 0, 0, 0, 0, 0, 0, 0, 55,126, 0,127, 0, |
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
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0, 0, 0, 0, 0, 95, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
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}; |
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|
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static void adb_kbd_put_keycode(void *opaque, int keycode) |
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{
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KBDState *s = opaque; |
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|
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if (s->count < sizeof(s->data)) { |
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s->data[s->wptr] = keycode; |
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if (++s->wptr == sizeof(s->data)) |
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s->wptr = 0;
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s->count++; |
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} |
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} |
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|
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static int adb_kbd_poll(ADBDevice *d, uint8_t *obuf) |
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{
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static int ext_keycode; |
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KBDState *s = ADB_KEYBOARD(d); |
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int adb_keycode, keycode;
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int olen;
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|
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olen = 0;
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for(;;) {
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if (s->count == 0) |
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break;
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keycode = s->data[s->rptr]; |
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if (++s->rptr == sizeof(s->data)) |
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s->rptr = 0;
|
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s->count--; |
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|
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if (keycode == 0xe0) { |
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ext_keycode = 1;
|
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} else {
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if (ext_keycode)
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adb_keycode = pc_to_adb_keycode[keycode | 0x80];
|
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else
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adb_keycode = pc_to_adb_keycode[keycode & 0x7f];
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obuf[0] = adb_keycode | (keycode & 0x80); |
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/* NOTE: could put a second keycode if needed */
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obuf[1] = 0xff; |
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olen = 2;
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ext_keycode = 0;
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break;
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} |
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} |
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return olen;
|
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} |
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|
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static int adb_kbd_request(ADBDevice *d, uint8_t *obuf, |
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const uint8_t *buf, int len) |
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{
|
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KBDState *s = ADB_KEYBOARD(d); |
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int cmd, reg, olen;
|
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|
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if ((buf[0] & 0x0f) == ADB_FLUSH) { |
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/* flush keyboard fifo */
|
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s->wptr = s->rptr = s->count = 0;
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return 0; |
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} |
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|
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cmd = buf[0] & 0xc; |
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reg = buf[0] & 0x3; |
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olen = 0;
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switch(cmd) {
|
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case ADB_WRITEREG:
|
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switch(reg) {
|
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case 2: |
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/* LED status */
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break;
|
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case 3: |
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switch(buf[2]) { |
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case ADB_CMD_SELF_TEST:
|
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break;
|
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case ADB_CMD_CHANGE_ID:
|
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case ADB_CMD_CHANGE_ID_AND_ACT:
|
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case ADB_CMD_CHANGE_ID_AND_ENABLE:
|
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d->devaddr = buf[1] & 0xf; |
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break;
|
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default:
|
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/* XXX: check this */
|
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d->devaddr = buf[1] & 0xf; |
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d->handler = buf[2];
|
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break;
|
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} |
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} |
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break;
|
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case ADB_READREG:
|
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switch(reg) {
|
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case 0: |
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olen = adb_kbd_poll(d, obuf); |
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break;
|
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case 1: |
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break;
|
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case 2: |
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obuf[0] = 0x00; /* XXX: check this */ |
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obuf[1] = 0x07; /* led status */ |
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olen = 2;
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break;
|
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case 3: |
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obuf[0] = d->handler;
|
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obuf[1] = d->devaddr;
|
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olen = 2;
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break;
|
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} |
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break;
|
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} |
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return olen;
|
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} |
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|
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static const VMStateDescription vmstate_adb_kbd = { |
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.name = "adb_kbd",
|
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.version_id = 1,
|
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.minimum_version_id = 1,
|
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.minimum_version_id_old = 1,
|
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.fields = (VMStateField[]) {
|
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VMSTATE_BUFFER(data, KBDState), |
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VMSTATE_INT32(rptr, KBDState), |
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VMSTATE_INT32(wptr, KBDState), |
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VMSTATE_INT32(count, KBDState), |
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VMSTATE_END_OF_LIST() |
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} |
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}; |
| 315 |
|
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static void adb_kbd_reset(DeviceState *dev) |
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{
|
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ADBDevice *d = ADB_DEVICE(dev); |
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KBDState *s = ADB_KEYBOARD(dev); |
| 320 |
|
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d->handler = 1;
|
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d->devaddr = ADB_DEVID_KEYBOARD; |
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memset(s->data, 0, sizeof(s->data)); |
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s->rptr = 0;
|
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s->wptr = 0;
|
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s->count = 0;
|
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} |
| 328 |
|
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static void adb_kbd_realizefn(DeviceState *dev, Error **errp) |
| 330 |
{
|
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ADBDevice *d = ADB_DEVICE(dev); |
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ADBKeyboardClass *akc = ADB_KEYBOARD_GET_CLASS(dev); |
| 333 |
|
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akc->parent_realize(dev, errp); |
| 335 |
|
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qemu_add_kbd_event_handler(adb_kbd_put_keycode, d); |
| 337 |
} |
| 338 |
|
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static void adb_kbd_initfn(Object *obj) |
| 340 |
{
|
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ADBDevice *d = ADB_DEVICE(obj); |
| 342 |
|
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d->devaddr = ADB_DEVID_KEYBOARD; |
| 344 |
} |
| 345 |
|
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static void adb_kbd_class_init(ObjectClass *oc, void *data) |
| 347 |
{
|
| 348 |
DeviceClass *dc = DEVICE_CLASS(oc); |
| 349 |
ADBDeviceClass *adc = ADB_DEVICE_CLASS(oc); |
| 350 |
ADBKeyboardClass *akc = ADB_KEYBOARD_CLASS(oc); |
| 351 |
|
| 352 |
akc->parent_realize = dc->realize; |
| 353 |
dc->realize = adb_kbd_realizefn; |
| 354 |
|
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adc->devreq = adb_kbd_request; |
| 356 |
dc->reset = adb_kbd_reset; |
| 357 |
dc->vmsd = &vmstate_adb_kbd; |
| 358 |
} |
| 359 |
|
| 360 |
static const TypeInfo adb_kbd_type_info = { |
| 361 |
.name = TYPE_ADB_KEYBOARD, |
| 362 |
.parent = TYPE_ADB_DEVICE, |
| 363 |
.instance_size = sizeof(KBDState),
|
| 364 |
.instance_init = adb_kbd_initfn, |
| 365 |
.class_init = adb_kbd_class_init, |
| 366 |
.class_size = sizeof(ADBKeyboardClass),
|
| 367 |
}; |
| 368 |
|
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/***************************************************************/
|
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/* Mouse ADB device */
|
| 371 |
|
| 372 |
#define ADB_MOUSE(obj) OBJECT_CHECK(MouseState, (obj), TYPE_ADB_MOUSE)
|
| 373 |
|
| 374 |
typedef struct MouseState { |
| 375 |
/*< public >*/
|
| 376 |
ADBDevice parent_obj; |
| 377 |
/*< private >*/
|
| 378 |
|
| 379 |
int buttons_state, last_buttons_state;
|
| 380 |
int dx, dy, dz;
|
| 381 |
} MouseState; |
| 382 |
|
| 383 |
#define ADB_MOUSE_CLASS(class) \
|
| 384 |
OBJECT_CLASS_CHECK(ADBMouseClass, (class), TYPE_ADB_MOUSE) |
| 385 |
#define ADB_MOUSE_GET_CLASS(obj) \
|
| 386 |
OBJECT_GET_CLASS(ADBMouseClass, (obj), TYPE_ADB_MOUSE) |
| 387 |
|
| 388 |
typedef struct ADBMouseClass { |
| 389 |
/*< public >*/
|
| 390 |
ADBDeviceClass parent_class; |
| 391 |
/*< private >*/
|
| 392 |
|
| 393 |
DeviceRealize parent_realize; |
| 394 |
} ADBMouseClass; |
| 395 |
|
| 396 |
static void adb_mouse_event(void *opaque, |
| 397 |
int dx1, int dy1, int dz1, int buttons_state) |
| 398 |
{
|
| 399 |
MouseState *s = opaque; |
| 400 |
|
| 401 |
s->dx += dx1; |
| 402 |
s->dy += dy1; |
| 403 |
s->dz += dz1; |
| 404 |
s->buttons_state = buttons_state; |
| 405 |
} |
| 406 |
|
| 407 |
|
| 408 |
static int adb_mouse_poll(ADBDevice *d, uint8_t *obuf) |
| 409 |
{
|
| 410 |
MouseState *s = ADB_MOUSE(d); |
| 411 |
int dx, dy;
|
| 412 |
|
| 413 |
if (s->last_buttons_state == s->buttons_state &&
|
| 414 |
s->dx == 0 && s->dy == 0) |
| 415 |
return 0; |
| 416 |
|
| 417 |
dx = s->dx; |
| 418 |
if (dx < -63) |
| 419 |
dx = -63;
|
| 420 |
else if (dx > 63) |
| 421 |
dx = 63;
|
| 422 |
|
| 423 |
dy = s->dy; |
| 424 |
if (dy < -63) |
| 425 |
dy = -63;
|
| 426 |
else if (dy > 63) |
| 427 |
dy = 63;
|
| 428 |
|
| 429 |
s->dx -= dx; |
| 430 |
s->dy -= dy; |
| 431 |
s->last_buttons_state = s->buttons_state; |
| 432 |
|
| 433 |
dx &= 0x7f;
|
| 434 |
dy &= 0x7f;
|
| 435 |
|
| 436 |
if (!(s->buttons_state & MOUSE_EVENT_LBUTTON))
|
| 437 |
dy |= 0x80;
|
| 438 |
if (!(s->buttons_state & MOUSE_EVENT_RBUTTON))
|
| 439 |
dx |= 0x80;
|
| 440 |
|
| 441 |
obuf[0] = dy;
|
| 442 |
obuf[1] = dx;
|
| 443 |
return 2; |
| 444 |
} |
| 445 |
|
| 446 |
static int adb_mouse_request(ADBDevice *d, uint8_t *obuf, |
| 447 |
const uint8_t *buf, int len) |
| 448 |
{
|
| 449 |
MouseState *s = ADB_MOUSE(d); |
| 450 |
int cmd, reg, olen;
|
| 451 |
|
| 452 |
if ((buf[0] & 0x0f) == ADB_FLUSH) { |
| 453 |
/* flush mouse fifo */
|
| 454 |
s->buttons_state = s->last_buttons_state; |
| 455 |
s->dx = 0;
|
| 456 |
s->dy = 0;
|
| 457 |
s->dz = 0;
|
| 458 |
return 0; |
| 459 |
} |
| 460 |
|
| 461 |
cmd = buf[0] & 0xc; |
| 462 |
reg = buf[0] & 0x3; |
| 463 |
olen = 0;
|
| 464 |
switch(cmd) {
|
| 465 |
case ADB_WRITEREG:
|
| 466 |
ADB_DPRINTF("write reg %d val 0x%2.2x\n", reg, buf[1]); |
| 467 |
switch(reg) {
|
| 468 |
case 2: |
| 469 |
break;
|
| 470 |
case 3: |
| 471 |
switch(buf[2]) { |
| 472 |
case ADB_CMD_SELF_TEST:
|
| 473 |
break;
|
| 474 |
case ADB_CMD_CHANGE_ID:
|
| 475 |
case ADB_CMD_CHANGE_ID_AND_ACT:
|
| 476 |
case ADB_CMD_CHANGE_ID_AND_ENABLE:
|
| 477 |
d->devaddr = buf[1] & 0xf; |
| 478 |
break;
|
| 479 |
default:
|
| 480 |
/* XXX: check this */
|
| 481 |
d->devaddr = buf[1] & 0xf; |
| 482 |
break;
|
| 483 |
} |
| 484 |
} |
| 485 |
break;
|
| 486 |
case ADB_READREG:
|
| 487 |
switch(reg) {
|
| 488 |
case 0: |
| 489 |
olen = adb_mouse_poll(d, obuf); |
| 490 |
break;
|
| 491 |
case 1: |
| 492 |
break;
|
| 493 |
case 3: |
| 494 |
obuf[0] = d->handler;
|
| 495 |
obuf[1] = d->devaddr;
|
| 496 |
olen = 2;
|
| 497 |
break;
|
| 498 |
} |
| 499 |
ADB_DPRINTF("read reg %d obuf[0] 0x%2.2x obuf[1] 0x%2.2x\n", reg,
|
| 500 |
obuf[0], obuf[1]); |
| 501 |
break;
|
| 502 |
} |
| 503 |
return olen;
|
| 504 |
} |
| 505 |
|
| 506 |
static void adb_mouse_reset(DeviceState *dev) |
| 507 |
{
|
| 508 |
ADBDevice *d = ADB_DEVICE(dev); |
| 509 |
MouseState *s = ADB_MOUSE(dev); |
| 510 |
|
| 511 |
d->handler = 2;
|
| 512 |
d->devaddr = ADB_DEVID_MOUSE; |
| 513 |
s->last_buttons_state = s->buttons_state = 0;
|
| 514 |
s->dx = s->dy = s->dz = 0;
|
| 515 |
} |
| 516 |
|
| 517 |
static const VMStateDescription vmstate_adb_mouse = { |
| 518 |
.name = "adb_mouse",
|
| 519 |
.version_id = 1,
|
| 520 |
.minimum_version_id = 1,
|
| 521 |
.minimum_version_id_old = 1,
|
| 522 |
.fields = (VMStateField[]) {
|
| 523 |
VMSTATE_INT32(buttons_state, MouseState), |
| 524 |
VMSTATE_INT32(last_buttons_state, MouseState), |
| 525 |
VMSTATE_INT32(dx, MouseState), |
| 526 |
VMSTATE_INT32(dy, MouseState), |
| 527 |
VMSTATE_INT32(dz, MouseState), |
| 528 |
VMSTATE_END_OF_LIST() |
| 529 |
} |
| 530 |
}; |
| 531 |
|
| 532 |
static void adb_mouse_realizefn(DeviceState *dev, Error **errp) |
| 533 |
{
|
| 534 |
MouseState *s = ADB_MOUSE(dev); |
| 535 |
ADBMouseClass *amc = ADB_MOUSE_GET_CLASS(dev); |
| 536 |
|
| 537 |
amc->parent_realize(dev, errp); |
| 538 |
|
| 539 |
qemu_add_mouse_event_handler(adb_mouse_event, s, 0, "QEMU ADB Mouse"); |
| 540 |
} |
| 541 |
|
| 542 |
static void adb_mouse_initfn(Object *obj) |
| 543 |
{
|
| 544 |
ADBDevice *d = ADB_DEVICE(obj); |
| 545 |
|
| 546 |
d->devaddr = ADB_DEVID_MOUSE; |
| 547 |
} |
| 548 |
|
| 549 |
static void adb_mouse_class_init(ObjectClass *oc, void *data) |
| 550 |
{
|
| 551 |
DeviceClass *dc = DEVICE_CLASS(oc); |
| 552 |
ADBDeviceClass *adc = ADB_DEVICE_CLASS(oc); |
| 553 |
ADBMouseClass *amc = ADB_MOUSE_CLASS(oc); |
| 554 |
|
| 555 |
amc->parent_realize = dc->realize; |
| 556 |
dc->realize = adb_mouse_realizefn; |
| 557 |
|
| 558 |
adc->devreq = adb_mouse_request; |
| 559 |
dc->reset = adb_mouse_reset; |
| 560 |
dc->vmsd = &vmstate_adb_mouse; |
| 561 |
} |
| 562 |
|
| 563 |
static const TypeInfo adb_mouse_type_info = { |
| 564 |
.name = TYPE_ADB_MOUSE, |
| 565 |
.parent = TYPE_ADB_DEVICE, |
| 566 |
.instance_size = sizeof(MouseState),
|
| 567 |
.instance_init = adb_mouse_initfn, |
| 568 |
.class_init = adb_mouse_class_init, |
| 569 |
.class_size = sizeof(ADBMouseClass),
|
| 570 |
}; |
| 571 |
|
| 572 |
|
| 573 |
static void adb_register_types(void) |
| 574 |
{
|
| 575 |
type_register_static(&adb_bus_type_info); |
| 576 |
type_register_static(&adb_device_type_info); |
| 577 |
type_register_static(&adb_kbd_type_info); |
| 578 |
type_register_static(&adb_mouse_type_info); |
| 579 |
} |
| 580 |
|
| 581 |
type_init(adb_register_types) |