/*
* 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
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
-#include "vl.h"
+#include "hw.h"
+#include "adb.h"
+#include "console.h"
+
+/* debug ADB */
+//#define DEBUG_ADB
+
+#ifdef DEBUG_ADB
+#define ADB_DPRINTF(fmt, ...) \
+do { printf("ADB: " fmt , ## __VA_ARGS__); } while (0)
+#else
+#define ADB_DPRINTF(fmt, ...)
+#endif
/* ADB commands */
#define ADB_BUSRESET 0x00
#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
-
+/* error codes */
+#define ADB_RET_NOTPRESENT (-2)
-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)
+int adb_request(ADBBusState *s, uint8_t *obuf, 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;
- }
+ cmd = buf[0] & 0xf;
+ if (cmd == ADB_BUSRESET) {
+ for(i = 0; i < s->nb_devices; i++) {
+ d = &s->devices[i];
+ if (d->devreset) {
+ d->devreset(d);
+ }
+ }
+ return 0;
+ }
+ devaddr = buf[0] >> 4;
for(i = 0; i < s->nb_devices; i++) {
d = &s->devices[i];
if (d->devaddr == devaddr) {
- d->receive_packet(d, buf, len);
- return;
+ return d->devreq(d, obuf, buf, len);
}
}
- adb_send_packet1(s, ADB_RET_NOTPRESENT);
+ return ADB_RET_NOTPRESENT;
}
-ADBDevice *adb_register_device(ADBBusState *s, int devaddr,
- ADBDeviceReceivePacket *receive_packet,
+/* XXX: move that to cuda ? */
+int adb_poll(ADBBusState *s, uint8_t *obuf)
+{
+ ADBDevice *d;
+ int olen, i;
+ uint8_t buf[1];
+
+ olen = 0;
+ for(i = 0; i < s->nb_devices; i++) {
+ if (s->poll_index >= s->nb_devices)
+ s->poll_index = 0;
+ d = &s->devices[s->poll_index];
+ buf[0] = ADB_READREG | (d->devaddr << 4);
+ olen = adb_request(s, obuf + 1, buf, 1);
+ /* if there is data, we poll again the same device */
+ if (olen > 0) {
+ obuf[0] = buf[0];
+ olen++;
+ break;
+ }
+ s->poll_index++;
+ }
+ return olen;
+}
+
+ADBDevice *adb_register_device(ADBBusState *s, int devaddr,
+ ADBDeviceRequest *devreq,
+ ADBDeviceReset *devreset,
void *opaque)
{
ADBDevice *d;
d = &s->devices[s->nb_devices++];
d->bus = s;
d->devaddr = devaddr;
- d->receive_packet = receive_packet;
+ d->devreq = devreq;
+ d->devreset = devreset;
d->opaque = opaque;
+ qemu_register_reset((QEMUResetHandler *)devreset, d);
return d;
}
/***************************************************************/
/* Keyboard ADB device */
+typedef struct KBDState {
+ uint8_t data[128];
+ int rptr, wptr, count;
+} KBDState;
+
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,
+ 84, 85, 82, 65, 0, 0, 10,103,111, 0, 0,110, 81, 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, 76,125, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,105, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 75, 0, 0,124, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0,115, 62,116, 0, 59, 0, 60, 0,119,
+ 61,121,114,117, 0, 0, 0, 0, 0, 0, 0, 55,126, 0,127, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 95, 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;
+ KBDState *s = d->opaque;
+
+ if (s->count < sizeof(s->data)) {
+ s->data[s->wptr] = keycode;
+ if (++s->wptr == sizeof(s->data))
+ s->wptr = 0;
+ s->count++;
+ }
+}
+
+static int adb_kbd_poll(ADBDevice *d, uint8_t *obuf)
+{
+ static int ext_keycode;
+ KBDState *s = d->opaque;
+ int adb_keycode, keycode;
+ int olen;
+
+ olen = 0;
+ for(;;) {
+ if (s->count == 0)
+ break;
+ keycode = s->data[s->rptr];
+ if (++s->rptr == sizeof(s->data))
+ s->rptr = 0;
+ s->count--;
+
+ 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];
+ obuf[0] = adb_keycode | (keycode & 0x80);
+ /* NOTE: could put a second keycode if needed */
+ obuf[1] = 0xff;
+ olen = 2;
+ ext_keycode = 0;
+ break;
+ }
}
+ return olen;
}
-static void adb_kbd_receive_packet(ADBDevice *d, const uint8_t *buf, int len)
+static int adb_kbd_request(ADBDevice *d, uint8_t *obuf,
+ const uint8_t *buf, int len)
{
- int cmd, reg;
- uint8_t obuf[4];
+ KBDState *s = d->opaque;
+ int cmd, reg, olen;
+
+ if ((buf[0] & 0x0f) == ADB_FLUSH) {
+ /* flush keyboard fifo */
+ s->wptr = s->rptr = s->count = 0;
+ return 0;
+ }
cmd = buf[0] & 0xc;
reg = buf[0] & 0x3;
+ olen = 0;
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 0:
+ olen = adb_kbd_poll(d, obuf);
+ break;
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);
+ obuf[0] = 0x00; /* XXX: check this */
+ obuf[1] = 0x07; /* led status */
+ olen = 2;
break;
case 3:
- obuf[0] = ADB_RET_OK;
- obuf[1] = d->handler;
- obuf[2] = d->devaddr;
- adb_send_packet(d->bus, obuf, 3);
+ obuf[0] = d->handler;
+ obuf[1] = d->devaddr;
+ olen = 2;
break;
}
break;
}
+ return olen;
+}
+
+static const VMStateDescription vmstate_adb_kbd = {
+ .name = "adb_kbd",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_BUFFER(data, KBDState),
+ VMSTATE_INT32(rptr, KBDState),
+ VMSTATE_INT32(wptr, KBDState),
+ VMSTATE_INT32(count, KBDState),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static int adb_kbd_reset(ADBDevice *d)
+{
+ KBDState *s = d->opaque;
+
+ d->handler = 1;
+ d->devaddr = ADB_KEYBOARD;
+ memset(s, 0, sizeof(KBDState));
+
+ return 0;
}
void adb_kbd_init(ADBBusState *bus)
{
ADBDevice *d;
-
- d = adb_register_device(bus, ADB_KEYBOARD, adb_kbd_receive_packet, NULL);
+ KBDState *s;
+ s = g_malloc0(sizeof(KBDState));
+ d = adb_register_device(bus, ADB_KEYBOARD, adb_kbd_request,
+ adb_kbd_reset, s);
qemu_add_kbd_event_handler(adb_kbd_put_keycode, d);
+ vmstate_register(NULL, -1, &vmstate_adb_kbd, s);
}
/***************************************************************/
/* Mouse ADB device */
+typedef struct MouseState {
+ int buttons_state, last_buttons_state;
+ int dx, dy, dz;
+} MouseState;
+
static void adb_mouse_event(void *opaque,
int dx1, int dy1, int dz1, int buttons_state)
{
ADBDevice *d = opaque;
- uint8_t buf[4];
+ MouseState *s = d->opaque;
+
+ s->dx += dx1;
+ s->dy += dy1;
+ s->dz += dz1;
+ s->buttons_state = buttons_state;
+}
+
+
+static int adb_mouse_poll(ADBDevice *d, uint8_t *obuf)
+{
+ MouseState *s = d->opaque;
int dx, dy;
- dx = dx1;
+ if (s->last_buttons_state == s->buttons_state &&
+ s->dx == 0 && s->dy == 0)
+ return 0;
+
+ dx = s->dx;
if (dx < -63)
dx = -63;
else if (dx > 63)
dx = 63;
- dy = dy1;
+ dy = s->dy;
if (dy < -63)
dy = -63;
else if (dy > 63)
dy = 63;
+ s->dx -= dx;
+ s->dy -= dy;
+ s->last_buttons_state = s->buttons_state;
+
dx &= 0x7f;
dy &= 0x7f;
- if (buttons_state & MOUSE_EVENT_LBUTTON)
+ if (!(s->buttons_state & MOUSE_EVENT_LBUTTON))
dy |= 0x80;
- if (buttons_state & MOUSE_EVENT_RBUTTON)
+ if (!(s->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);
+ obuf[0] = dy;
+ obuf[1] = dx;
+ return 2;
}
-static void adb_mouse_receive_packet(ADBDevice *d, const uint8_t *buf, int len)
+static int adb_mouse_request(ADBDevice *d, uint8_t *obuf,
+ const uint8_t *buf, int len)
{
- int cmd, reg;
- uint8_t obuf[4];
+ MouseState *s = d->opaque;
+ int cmd, reg, olen;
+
+ if ((buf[0] & 0x0f) == ADB_FLUSH) {
+ /* flush mouse fifo */
+ s->buttons_state = s->last_buttons_state;
+ s->dx = 0;
+ s->dy = 0;
+ s->dz = 0;
+ return 0;
+ }
cmd = buf[0] & 0xc;
reg = buf[0] & 0x3;
+ olen = 0;
switch(cmd) {
case ADB_WRITEREG:
+ ADB_DPRINTF("write reg %d val 0x%2.2x\n", reg, buf[1]);
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 0:
+ olen = adb_mouse_poll(d, obuf);
+ break;
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);
+ obuf[0] = d->handler;
+ obuf[1] = d->devaddr;
+ olen = 2;
break;
}
+ ADB_DPRINTF("read reg %d obuf[0] 0x%2.2x obuf[1] 0x%2.2x\n", reg,
+ obuf[0], obuf[1]);
break;
}
+ return olen;
}
+static int adb_mouse_reset(ADBDevice *d)
+{
+ MouseState *s = d->opaque;
+
+ d->handler = 2;
+ d->devaddr = ADB_MOUSE;
+ memset(s, 0, sizeof(MouseState));
+
+ return 0;
+}
+
+static const VMStateDescription vmstate_adb_mouse = {
+ .name = "adb_mouse",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_INT32(buttons_state, MouseState),
+ VMSTATE_INT32(last_buttons_state, MouseState),
+ VMSTATE_INT32(dx, MouseState),
+ VMSTATE_INT32(dy, MouseState),
+ VMSTATE_INT32(dz, MouseState),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
void adb_mouse_init(ADBBusState *bus)
{
ADBDevice *d;
+ MouseState *s;
- d = adb_register_device(bus, ADB_MOUSE, adb_mouse_receive_packet, NULL);
- qemu_add_mouse_event_handler(adb_mouse_event, d);
+ s = g_malloc0(sizeof(MouseState));
+ d = adb_register_device(bus, ADB_MOUSE, adb_mouse_request,
+ adb_mouse_reset, s);
+ qemu_add_mouse_event_handler(adb_mouse_event, d, 0, "QEMU ADB Mouse");
+ vmstate_register(NULL, -1, &vmstate_adb_mouse, s);
}
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