X-Git-Url: https://vcs.maemo.org/git/?a=blobdiff_plain;f=hw%2Fadb.c;h=1e43792b5a3ed718e47333b46459d712be032a0d;hb=cd346349b45ef056f138a184f660b8c34c3213cc;hp=2d230a697e7b0cd72a98eae20b4e0039f7e68f5a;hpb=819e712bfe40f0706689a98f9968f842e3aaccd1;p=qemu

diff --git a/hw/adb.c b/hw/adb.c
index 2d230a6..1e43792 100644
--- a/hw/adb.c
+++ b/hw/adb.c
@@ -1,8 +1,8 @@
 /*
  * 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
@@ -43,53 +43,62 @@
 #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);
-}
+/* error codes */
+#define ADB_RET_NOTPRESENT (-2)
 
-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[0] & 0xf;
-    devaddr = buf[0] >> 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;
+    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);
+        }
+    }
+    return ADB_RET_NOTPRESENT;
+}
+
+/* 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++;
     }
-    adb_send_packet1(s, ADB_RET_NOTPRESENT);
+    return olen;
 }
 
-ADBDevice *adb_register_device(ADBBusState *s, int devaddr, 
-                               ADBDeviceReceivePacket *receive_packet, 
+ADBDevice *adb_register_device(ADBBusState *s, int devaddr,
+                               ADBDeviceRequest *devreq,
+                               ADBDeviceReset *devreset,
                                void *opaque)
 {
     ADBDevice *d;
@@ -98,7 +107,8 @@ ADBDevice *adb_register_device(ADBBusState *s, int devaddr,
     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;
     return d;
 }
@@ -106,203 +116,295 @@ ADBDevice *adb_register_device(ADBBusState *s, int devaddr,
 /***************************************************************/
 /* 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 void adb_kbd_receive_packet(ADBDevice *d, const uint8_t *buf, int len)
+static int adb_kbd_poll(ADBDevice *d, uint8_t *obuf)
 {
-    int cmd, reg;
-    uint8_t obuf[4];
+    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 int adb_kbd_request(ADBDevice *d, uint8_t *obuf,
+                           const uint8_t *buf, int len)
+{
+    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 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 = qemu_mallocz(sizeof(KBDState));
+    d = adb_register_device(bus, ADB_KEYBOARD, adb_kbd_request,
+                            adb_kbd_reset, s);
+    adb_kbd_reset(d);
     qemu_add_kbd_event_handler(adb_kbd_put_keycode, d);
 }
 
 /***************************************************************/
 /* 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:
         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;
         }
         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;
 }
 
 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 = qemu_mallocz(sizeof(MouseState));
+    d = adb_register_device(bus, ADB_MOUSE, adb_mouse_request,
+                            adb_mouse_reset, s);
+    adb_mouse_reset(d);
+    qemu_add_mouse_event_handler(adb_mouse_event, d, 0, "QEMU ADB Mouse");
 }