* Fix PS2 mouse command drivers reception, affecting among others its

    correct detection.
    - debian/patches/23_ps2_mouse.patch: New file.
    Thanks to Samuel Thibault <samuel.thibault@ens-lyon.org>.

1 files changed, 122 insertions, 0 deletions

diff --git a/debian/patches/23_ps2_mouse.patch b/debian/patches/23_ps2_mouse.patch
new file mode 100644
index 0000000..2821162
--- /dev/null
+++ b/debian/patches/23_ps2_mouse.patch
@@ -0,0 +1,122 @@
+#DPATCHLEVEL=1
+
+2006-01-14  Samuel Thibault  <samuel.thibault@ens-lyon.org>
+
+	Fix ps2 mouse driver command reception.
+
+	* kd_mouse.c: Remove mouse_char_in and mouse_char variables.
+	Add mouse_char_index variable.
+	(mouse_handle_byte): Use mousebuf instead of mouse_char for
+	storing incoming command characters.
+	(kd_mouse_read): Use mousebuf instead of mouse_char
+	for getting incoming command characters.
+	(kd_mouse_read_reset): New function.
+	(ibm_ps2_mouse_open,ibm_ps2_mouse_close): Call new
+	kd_mouse_read_reset function.
+
+
+--- gnumach-20050801/i386/i386at/kd_mouse.c	2001-04-05 08:39:21.000000000 +0200
++++ gnumach-mine/i386/i386at/kd_mouse.c	2006-01-14 22:49:41.000000000 +0100
+@@ -122,8 +122,7 @@
+ 
+ boolean_t	mouse_char_cmd = FALSE;		/* mouse response is to cmd */
+ boolean_t	mouse_char_wanted = FALSE;	/* want mouse response */
+-boolean_t	mouse_char_in = FALSE;		/* have mouse response */
+-unsigned char	mouse_char;			/* mouse response */
++int		mouse_char_index;		/* mouse response */
+ 
+ 
+ /*
+@@ -573,11 +572,11 @@ mouse_handle_byte(ch)
+ 	    /*
+ 	     *	Mouse character is response to command
+ 	     */
+-	    mouse_char = ch;
+-	    mouse_char_in = TRUE;
++	    if (mousebufindex < mousebufsize)
++	        mousebuf[mousebufindex++] = ch;
+ 	    if (mouse_char_wanted) {
+ 		mouse_char_wanted = FALSE;
+-		wakeup(&mouse_char);
++		wakeup(&mousebuf);
+ 	    }
+ 	    return;
+ 	}
+@@ -747,22 +746,33 @@ int kd_mouse_read(void)
+ {
+ 	int	ch;
+ 
+-	while (!mouse_char_in) {
++	if (mouse_char_index >= mousebufsize)
++	    return -1;
++
++	while (mousebufindex <= mouse_char_index) {
+ 	    mouse_char_wanted = TRUE;
+ #ifdef	MACH_KERNEL
+-	    assert_wait((event_t) &mouse_char, FALSE);
++	    assert_wait((event_t) &mousebuf, FALSE);
+ 	    thread_block((void (*)()) 0);
+ #else	/* MACH_KERNEL */
+-	    sleep(&mouse_char, PZERO);
++	    sleep(&mousebuf, PZERO);
+ #endif	/* MACH_KERNEL */
+ 	}
+ 
+-	ch = mouse_char;
+-	mouse_char_in = FALSE;
++	ch = mousebuf[mouse_char_index++];
+ 
+ 	return ch;
+ }
+ 
++/*
++ *	Prepare buffer for receiving next packet from mouse.
++ */
++void kd_mouse_read_reset(void)
++{
++	mousebufindex = 0;
++	mouse_char_index = 0;
++}
++
+ ibm_ps2_mouse_open(dev)
+ {
+ 	spl_t	s = spltty();
+@@ -775,6 +785,7 @@ ibm_ps2_mouse_open(dev)
+ 	kd_cmdreg_write(0x47);	/* allow mouse interrupts */
+ 				/* magic number for ibm? */
+ 
++	kd_mouse_read_reset();
+ 	kd_mouse_write(0xff);	/* reset mouse */
+ 	if (kd_mouse_read() != 0xfa) {
+ 	    splx(s);
+@@ -784,18 +795,21 @@ ibm_ps2_mouse_open(dev)
+ 	(void) kd_mouse_read();	/* discard 2-character mouse ID */
+ 	(void) kd_mouse_read();
+ 
++	kd_mouse_read_reset();
+ 	kd_mouse_write(0xea);	/* set stream mode */
+ 	if (kd_mouse_read() != 0xfa) {
+ 	    splx(s);
+ 	    return;		/* need ACK */
+ 	}
+ 
++	kd_mouse_read_reset();
+ 	kd_mouse_write(0xf4);	/* enable */
+ 	if (kd_mouse_read() != 0xfa) {
+ 	    splx(s);
+ 	    return;		/* need ACK */
+ 	}
+ 
++	kd_mouse_read_reset();
+ 	mouse_char_cmd = FALSE;	/* now we get mouse packets */
+ 
+ 	splx(s);
+@@ -807,6 +821,7 @@ ibm_ps2_mouse_close(dev)
+ 
+ 	mouse_char_cmd = TRUE;	/* responses are to commands */
+ 
++	kd_mouse_read_reset();
+ 	kd_mouse_write(0xff);	/* reset mouse */
+ 	if (kd_mouse_read() == 0xfa) {
+ 	    /* got ACK: discard 2-char mouse ID */
+