pc, pc64: remove unused psaux driver, cleanup devkbd

the psaux driver is not used in any kernel configuration and theres
no userspace mouse daemon. i8042auxcmds() is wrong as access
to the user buffer can fault and we are holding an ilocks.

little cleanups in devkbd.

sys/src/9/pc/devkbd.c

@@ -159,24 +159,6 @@ i8042auxcmd(int cmd)
 	return 0;
 }
 
-int
-i8042auxcmds(uchar *cmd, int ncmd)
-{
-	int i;
-
-	ilock(&i8042lock);
-	for(i=0; i<ncmd; i++){
-		if(outready() < 0)
-			break;
-		outb(Cmd, 0xD4);
-		if(outready() < 0)
-			break;
-		outb(Data, cmd[i]);
-	}
-	iunlock(&i8042lock);
-	return i;
-}
-
 /*
  * set keyboard's leds for lock states (scroll, numeric, caps).
  *
@@ -252,7 +234,7 @@ i8042intr(Ureg*, void*)
 void
 i8042auxenable(void (*putc)(int, int))
 {
-	char *err = "i8042: aux init failed\n";
+	static char err[] = "i8042: aux init failed\n";
 
 	ilock(&i8042lock);
 
@@ -293,6 +275,7 @@ kbdshutdown(void)
 {
 	if(nokbd)
 		return;
+	/* disable kbd and aux xfers and interrupts */
 	ccc &= ~(Ckbdint|Cauxint);
 	ccc |= (Cauxdis|Ckbddis);
 	outready();
@@ -391,7 +374,7 @@ kbdwrite(Chan *c, void *a, long n, vlong)
 static void
 kbdreset(void)
 {
-	static char *initfailed = "i8042: init failed\n";
+	static char initfailed[] = "i8042: kbd init failed\n";
 	int c, try;
 
 	kbd.q = qopen(1024, Qcoalesce, 0, 0);
@@ -437,8 +420,8 @@ kbdreset(void)
 	outready();
 
 	nokbd = 0;
-	ioalloc(Data, 1, 0, "kbd");
-	ioalloc(Cmd, 1, 0, "kbd");
+	ioalloc(Cmd, 1, 0, "i8042.cs");
+	ioalloc(Data, 1, 0, "i8042.data");
 	intrenable(IrqKBD, i8042intr, 0, BUSUNKNOWN, "kbd");
 }
 

sys/src/9/pc/fns.h

@@ -58,7 +58,6 @@ void	guesscpuhz(int);
 void	halt(void);
 void	mwait(void*);
 int	i8042auxcmd(int);
-int	i8042auxcmds(uchar*, int);
 void	i8042auxenable(void (*)(int, int));
 void	i8042reset(void);
 void	i8250console(void);

sys/src/9/pc/psaux.c

@@ -1,57 +0,0 @@
-/*
- * Interface to raw PS/2 aux port.
- * Used by user-level mouse daemon.
- */
-
-#include "u.h"
-#include "../port/lib.h"
-#include "mem.h"
-#include "dat.h"
-#include "fns.h"
-#include "../port/error.h"
-#include "io.h"
-
-#define Image	IMAGE
-#include <draw.h>
-#include <memdraw.h>
-#include <cursor.h>
-#include "screen.h"
-
-/*
- * BUG: we ignore shift here.
- * we need a more general solution,
- * one that will also work for serial mice.
- */
-Queue *psauxq;
-
-static void
-psauxputc(int c, int)
-{
-	uchar uc;
-
-	uc = c;
-	qproduce(psauxq, &uc, 1);
-}
-
-static long
-psauxread(Chan*, void *a, long n, vlong)
-{
-	return qread(psauxq, a, n);
-}
-
-static long
-psauxwrite(Chan*, void *a, long n, vlong)
-{
-	return i8042auxcmds(a, n);
-}
-
-void
-psauxlink(void)
-{
-	psauxq = qopen(1024, Qcoalesce, 0, 0);
-	if(psauxq == nil)
-		panic("psauxlink");
-	qnoblock(psauxq, 1);
-	i8042auxenable(psauxputc);
-	addarchfile("psaux", DMEXCL|0660, psauxread, psauxwrite);
-}

sys/src/9/pc64/fns.h

@@ -49,7 +49,6 @@ void	guesscpuhz(int);
 void	halt(void);
 void	mwait(void*);
 int	i8042auxcmd(int);
-int	i8042auxcmds(uchar*, int);
 void	i8042auxenable(void (*)(int, int));
 void	i8042reset(void);
 void	i8250console(void);