path: root/drivers/sbus/char/pcikbd.c

/* $Id: pcikbd.c,v 1.4 1997/09/05 22:59:53 ecd Exp $
 * pcikbd.c: Ultra/AX PC keyboard support.
 *
 * Copyright (C) 1997  Eddie C. Dost  (ecd@skynet.be)
 *
 * This code is mainly put together from various places in
 * drivers/char, please refer to these sources for credits
 * to the original authors.
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/poll.h>
#include <linux/malloc.h>
#include <linux/errno.h>
#include <linux/random.h>
#include <linux/miscdevice.h>
#include <linux/kbd_ll.h>
#include <linux/init.h>

#include <asm/ebus.h>
#include <asm/oplib.h>
#include <asm/irq.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <asm/keyboard.h>

#include "pcikbd.h"
#include "sunserial.h"

static int kbd_node;
static int beep_node;

static unsigned long pcikbd_iobase = 0;
static unsigned int pcikbd_irq;

/* used only by send_data - set by keyboard_interrupt */
static volatile unsigned char reply_expected = 0;
static volatile unsigned char acknowledge = 0;
static volatile unsigned char resend = 0;

static inline void kb_wait(void)
{
	unsigned long start = jiffies;

	do {
		if(!(inb(pcikbd_iobase + KBD_STATUS_REG) & KBD_STAT_IBF))
			return;
	} while (jiffies - start < KBC_TIMEOUT);
}

/*
 * Translation of escaped scancodes to keycodes.
 * This is now user-settable.
 * The keycodes 1-88,96-111,119 are fairly standard, and
 * should probably not be changed - changing might confuse X.
 * X also interprets scancode 0x5d (KEY_Begin).
 *
 * For 1-88 keycode equals scancode.
 */

#define E0_KPENTER 96
#define E0_RCTRL   97
#define E0_KPSLASH 98
#define E0_PRSCR   99
#define E0_RALT    100
#define E0_BREAK   101  /* (control-pause) */
#define E0_HOME    102
#define E0_UP      103
#define E0_PGUP    104
#define E0_LEFT    105
#define E0_RIGHT   106
#define E0_END     107
#define E0_DOWN    108
#define E0_PGDN    109
#define E0_INS     110
#define E0_DEL     111

#define E1_PAUSE   119

/*
 * The keycodes below are randomly located in 89-95,112-118,120-127.
 * They could be thrown away (and all occurrences below replaced by 0),
 * but that would force many users to use the `setkeycodes' utility, where
 * they needed not before. It does not matter that there are duplicates, as
 * long as no duplication occurs for any single keyboard.
 */
#define SC_LIM 89

#define FOCUS_PF1 85           /* actual code! */
#define FOCUS_PF2 89
#define FOCUS_PF3 90
#define FOCUS_PF4 91
#define FOCUS_PF5 92
#define FOCUS_PF6 93
#define FOCUS_PF7 94
#define FOCUS_PF8 95
#define FOCUS_PF9 120
#define FOCUS_PF10 121
#define FOCUS_PF11 122
#define FOCUS_PF12 123

#define JAP_86     124
/* tfj@olivia.ping.dk:
 * The four keys are located over the numeric keypad, and are
 * labelled A1-A4. It's an rc930 keyboard, from
 * Regnecentralen/RC International, Now ICL.
 * Scancodes: 59, 5a, 5b, 5c.
 */
#define RGN1 124
#define RGN2 125
#define RGN3 126
#define RGN4 127

static unsigned char high_keys[128 - SC_LIM] = {
  RGN1, RGN2, RGN3, RGN4, 0, 0, 0,                   /* 0x59-0x5f */
  0, 0, 0, 0, 0, 0, 0, 0,                            /* 0x60-0x67 */
  0, 0, 0, 0, 0, FOCUS_PF11, 0, FOCUS_PF12,          /* 0x68-0x6f */
  0, 0, 0, FOCUS_PF2, FOCUS_PF9, 0, 0, FOCUS_PF3,    /* 0x70-0x77 */
  FOCUS_PF4, FOCUS_PF5, FOCUS_PF6, FOCUS_PF7,        /* 0x78-0x7b */
  FOCUS_PF8, JAP_86, FOCUS_PF10, 0                   /* 0x7c-0x7f */
};

/* BTC */
#define E0_MACRO   112
/* LK450 */
#define E0_F13     113
#define E0_F14     114
#define E0_HELP    115
#define E0_DO      116
#define E0_F17     117
#define E0_KPMINPLUS 118
/*
 * My OmniKey generates e0 4c for  the "OMNI" key and the
 * right alt key does nada. [kkoller@nyx10.cs.du.edu]
 */
#define E0_OK	124
/*
 * New microsoft keyboard is rumoured to have
 * e0 5b (left window button), e0 5c (right window button),
 * e0 5d (menu button). [or: LBANNER, RBANNER, RMENU]
 * [or: Windows_L, Windows_R, TaskMan]
 */
#define E0_MSLW	125
#define E0_MSRW	126
#define E0_MSTM	127

static unsigned char e0_keys[128] = {
  0, 0, 0, 0, 0, 0, 0, 0,			      /* 0x00-0x07 */
  0, 0, 0, 0, 0, 0, 0, 0,			      /* 0x08-0x0f */
  0, 0, 0, 0, 0, 0, 0, 0,			      /* 0x10-0x17 */
  0, 0, 0, 0, E0_KPENTER, E0_RCTRL, 0, 0,	      /* 0x18-0x1f */
  0, 0, 0, 0, 0, 0, 0, 0,			      /* 0x20-0x27 */
  0, 0, 0, 0, 0, 0, 0, 0,			      /* 0x28-0x2f */
  0, 0, 0, 0, 0, E0_KPSLASH, 0, E0_PRSCR,	      /* 0x30-0x37 */
  E0_RALT, 0, 0, 0, 0, E0_F13, E0_F14, E0_HELP,	      /* 0x38-0x3f */
  E0_DO, E0_F17, 0, 0, 0, 0, E0_BREAK, E0_HOME,	      /* 0x40-0x47 */
  E0_UP, E0_PGUP, 0, E0_LEFT, E0_OK, E0_RIGHT, E0_KPMINPLUS, E0_END,/* 0x48-0x4f */
  E0_DOWN, E0_PGDN, E0_INS, E0_DEL, 0, 0, 0, 0,	      /* 0x50-0x57 */
  0, 0, 0, E0_MSLW, E0_MSRW, E0_MSTM, 0, 0,	      /* 0x58-0x5f */
  0, 0, 0, 0, 0, 0, 0, 0,			      /* 0x60-0x67 */
  0, 0, 0, 0, 0, 0, 0, E0_MACRO,		      /* 0x68-0x6f */
  0, 0, 0, 0, 0, 0, 0, 0,			      /* 0x70-0x77 */
  0, 0, 0, 0, 0, 0, 0, 0			      /* 0x78-0x7f */
};

static unsigned int prev_scancode = 0;

int pcikbd_setkeycode(unsigned int scancode, unsigned int keycode)
{
	if(scancode < SC_LIM || scancode > 255 || keycode > 127)
		return -EINVAL;
	if(scancode < 128)
		high_keys[scancode - SC_LIM] = keycode;
	else
		e0_keys[scancode - 128] = keycode;
	return 0;
}

int pcikbd_getkeycode(unsigned int scancode)
{
	return
		(scancode < SC_LIM || scancode > 255) ? -EINVAL :
		(scancode < 128) ? high_keys[scancode - SC_LIM] :
		e0_keys[scancode - 128];
}

int do_acknowledge(unsigned char scancode)
{
	if(reply_expected) {
		if(scancode == KBD_REPLY_ACK) {
			acknowledge = 1;
			reply_expected = 0;
			return 0;
		} else if(scancode == KBD_REPLY_RESEND) {
			resend = 1;
			reply_expected = 0;
			return 0;
		}
	}
	if(scancode == 0) {
		prev_scancode = 0;
		return 0;
	}
	return 1;
}

int pcikbd_pretranslate(unsigned char scancode, char raw_mode)
{
	if(scancode == 0xff) {
		prev_scancode = 0;
		return 0;
	}
	if(scancode == 0xe0 || scancode == 0xe1) {
		prev_scancode = scancode;
		return 0;
	}
	return 1;
}

int pcikbd_translate(unsigned char scancode, unsigned char *keycode,
		     char raw_mode)
{
	if(prev_scancode) {
		if(prev_scancode != 0xe0) {
			if(prev_scancode == 0xe1 && scancode == 0x1d) {
				prev_scancode = 0x100;
				return 0;
			} else if(prev_scancode == 0x100 && scancode == 0x45) {
				*keycode = E1_PAUSE;
				prev_scancode = 0;
			} else {
				prev_scancode = 0;
				return 0;
			}
		} else {
			prev_scancode = 0;
			if(scancode == 0x2a || scancode == 0x36)
				return 0;
			if(e0_keys[scancode])
				*keycode = e0_keys[scancode];
			else
				return 0;
		}
	} else if(scancode >= SC_LIM) {
		*keycode = high_keys[scancode - SC_LIM];
		if(!*keycode)
			return 0;

	} else
		*keycode = scancode;
	return 1;
}

char pcikbd_unexpected_up(unsigned char keycode)
{
	if(keycode >= SC_LIM || keycode == 85)
		return 0;
	else
		return 0200;
}

static void
pcikbd_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
	unsigned char status;

	/*
	 * This IRQ might be shared with the 16550A serial chip,
	 * so we check dev_id to see if it was for us.
	 * (See also drivers/sbus/char/su.c).
	 */
	if (dev_id)
		return;

	/* kbd_pt_regs = regs; */
	status = inb(pcikbd_iobase + KBD_STATUS_REG);
	do {
		unsigned char scancode;

		if(status & kbd_read_mask & KBD_STAT_MOUSE_OBF)
			break;
		scancode = inb(pcikbd_iobase + KBD_DATA_REG);
		if((status & KBD_STAT_OBF) && do_acknowledge(scancode))
			/* handle_scancode(scancode) */;
		status = inb(pcikbd_iobase + KBD_STATUS_REG);
	} while(status & KBD_STAT_OBF);
	mark_bh(KEYBOARD_BH);
}

static int send_data(unsigned char data)
{
	int retries = 3;
	unsigned long start;

	do {
		kb_wait();
		acknowledge = resend = 0;
		reply_expected = 1;
		outb(data, pcikbd_iobase + KBD_DATA_REG);
		start = jiffies;
		do {
			if(acknowledge)
				return 1;
			if(jiffies - start >= KBD_TIMEOUT)
				return 0;
		} while(!resend);
	} while(retries-- > 0);
	return 0;
}

void pcikbd_leds(unsigned char leds)
{
	if(!send_data(KBD_CMD_SET_LEDS) || !send_data(leds))
		send_data(KBD_CMD_ENABLE);
		
}

__initfunc(static int pcikbd_wait_for_input(void))
{
	int status, data;
	unsigned long start = jiffies;

	do {
		status = inb(pcikbd_iobase + KBD_STATUS_REG);
		if(!(status & KBD_STAT_OBF))
			continue;
		data = inb(pcikbd_iobase + KBD_DATA_REG);
		if(status & (KBD_STAT_GTO | KBD_STAT_PERR))
			continue;
		return (data & 0xff);
	} while(jiffies - start < KBD_INIT_TIMEOUT);
	return -1;
}

__initfunc(static void pcikbd_write(int address, int data))
{
	int status;

	do {
		status = inb(pcikbd_iobase + KBD_STATUS_REG);
	} while (status & KBD_STAT_IBF);
	outb(data, pcikbd_iobase + address);
}

__initfunc(static char *do_pcikbd_hwinit(void))
{
	while(pcikbd_wait_for_input() != -1)
		;

	pcikbd_write(KBD_CNTL_REG, KBD_CCMD_SELF_TEST);
	if(pcikbd_wait_for_input() != 0xff)
		return "Keyboard failed self test";

	pcikbd_write(KBD_CNTL_REG, KBD_CCMD_KBD_TEST);
	if(pcikbd_wait_for_input() != 0x00)
		return "Keyboard interface failed self test";

	pcikbd_write(KBD_CNTL_REG, KBD_CCMD_KBD_ENABLE);
	pcikbd_write(KBD_DATA_REG, KBD_CMD_RESET);
	if(pcikbd_wait_for_input() != KBD_REPLY_ACK)
		return "Keyboard reset failed, no ACK";
	if(pcikbd_wait_for_input() != KBD_REPLY_POR)
		return "Keyboard reset failed, no ACK";

	pcikbd_write(KBD_DATA_REG, KBD_CMD_DISABLE);
	if(pcikbd_wait_for_input() != KBD_REPLY_ACK)
		return "Disable keyboard: no ACK";

	pcikbd_write(KBD_CNTL_REG, KBD_CCMD_WRITE_MODE);
	pcikbd_write(KBD_DATA_REG,
		     (KBD_MODE_KBD_INT | KBD_MODE_SYS |
		      KBD_MODE_DISABLE_MOUSE | KBD_MODE_KCC));
	pcikbd_write(KBD_DATA_REG, KBD_CMD_ENABLE);
	if(pcikbd_wait_for_input() != KBD_REPLY_ACK)
		return "Enable keyboard: no ACK";

	pcikbd_write(KBD_DATA_REG, KBD_CMD_SET_RATE);
	if(pcikbd_wait_for_input() != KBD_REPLY_ACK)
		return "Set rate: no ACK";
	pcikbd_write(KBD_DATA_REG, 0x00);
	if(pcikbd_wait_for_input() != KBD_REPLY_ACK)
		return "Set rate: no ACK";

	return NULL; /* success */
}

__initfunc(void pcikbd_hwinit(void))
{
	char *msg;

	disable_irq(pcikbd_irq);
	msg = do_pcikbd_hwinit();
	enable_irq(pcikbd_irq);

	if(msg)
		printk("8042: keyboard init failure [%s]\n", msg);
}

__initfunc(int pcikbd_probe(void))
{
	struct linux_ebus *ebus;
	struct linux_ebus_device *edev;
	struct linux_ebus_child *child;

	for_all_ebusdev(edev, ebus) {
		if(!strcmp(edev->prom_name, "8042")) {
			for_each_edevchild(edev, child) {
				if (!strcmp(child->prom_name, "kb_ps2"))
					goto found;
			}
		}
	}
	printk("pcikbd_probe: no 8042 found\n");
	return -ENODEV;

found:
	pcikbd_iobase = child->base_address[0];
	if (check_region(pcikbd_iobase, sizeof(unsigned long))) {
		printk("8042: can't get region %lx, %d\n",
		       pcikbd_iobase, (int)sizeof(unsigned long));
		return -ENODEV;
	}
	request_region(pcikbd_iobase, sizeof(unsigned long), "8042 controller");

	pcikbd_irq = child->irqs[0];
	if (request_irq(pcikbd_irq, &pcikbd_interrupt,
			SA_SHIRQ, "keyboard", NULL)) {
		printk("8042: cannot register IRQ %x\n", pcikbd_irq);
		return -ENODEV;
	}

	printk("8042(kbd): iobase[%016lx] irq[%x]\n", pcikbd_iobase, pcikbd_irq);

	/* pcikbd_init(); */
	kbd_read_mask = KBD_STAT_OBF;
	return 0;
}



/*
 * Here begins the Mouse Driver.
 */

static int ms_node;

static unsigned long pcimouse_iobase = 0;
static unsigned int pcimouse_irq;

#define PSMOUSE_MINOR      1		/* Minor device # for this mouse */

#define AUX_BUF_SIZE	2048

struct aux_queue {
	unsigned long head;
	unsigned long tail;
	struct wait_queue *proc_list;
	struct fasync_struct *fasync;
	unsigned char buf[AUX_BUF_SIZE];
};

static struct aux_queue *queue;
static int aux_ready = 0;
static int aux_count = 0;
static int aux_present = 0;

/*
 *	Shared subroutines
 */

static unsigned int get_from_queue(void)
{
	unsigned int result;
	unsigned long flags;

	save_flags(flags);
	cli();
	result = queue->buf[queue->tail];
	queue->tail = (queue->tail + 1) & (AUX_BUF_SIZE-1);
	restore_flags(flags);
	return result;
}


static inline int queue_empty(void)
{
	return queue->head == queue->tail;
}

static int fasync_aux(struct inode *inode, struct file *filp, int on)
{
	int retval;

	retval = fasync_helper(inode, filp, on, &queue->fasync);
	if (retval < 0)
		return retval;
	return 0;
}

/*
 *	PS/2 Aux Device
 */

#define AUX_INTS_OFF	(KBD_MODE_KCC | KBD_MODE_DISABLE_MOUSE | \
			 KBD_MODE_SYS | KBD_MODE_KBD_INT)

#define AUX_INTS_ON	(KBD_MODE_KCC | KBD_MODE_SYS | \
			 KBD_MODE_MOUSE_INT | KBD_MODE_KBD_INT)

#define MAX_RETRIES	60		/* some aux operations take long time*/

/*
 *	Status polling
 */

static int poll_aux_status(void)
{
	int retries=0;

	while ((inb(pcimouse_iobase + KBD_STATUS_REG) &
		(KBD_STAT_IBF | KBD_STAT_OBF)) && retries < MAX_RETRIES) {
 		if ((inb(pcimouse_iobase + KBD_STATUS_REG) & AUX_STAT_OBF)
		    == AUX_STAT_OBF)
			inb(pcimouse_iobase + KBD_DATA_REG);
		current->state = TASK_INTERRUPTIBLE;
		current->timeout = jiffies + (5*HZ + 99) / 100;
		schedule();
		retries++;
	}
	return (retries < MAX_RETRIES);
}

/*
 * Write to aux device
 */

static void aux_write_dev(int val)
{
	poll_aux_status();
	outb(KBD_CCMD_WRITE_MOUSE, pcimouse_iobase + KBD_CNTL_REG);/* Write magic cookie */
	poll_aux_status();
	outb_p(val, pcimouse_iobase + KBD_DATA_REG);		 /* Write data */
}

/*
 * Write to device & handle returned ack
 */

__initfunc(static int aux_write_ack(int val))
{
	aux_write_dev(val);
	poll_aux_status();

	if ((inb(pcimouse_iobase + KBD_STATUS_REG) & AUX_STAT_OBF) == AUX_STAT_OBF)
		return (inb(pcimouse_iobase + KBD_DATA_REG));
	return 0;
}

/*
 * Write aux device command
 */

static void aux_write_cmd(int val)
{
	poll_aux_status();
	outb(KBD_CCMD_WRITE_MODE, pcimouse_iobase + KBD_CNTL_REG);
	poll_aux_status();
	outb(val, pcimouse_iobase + KBD_DATA_REG);
}

/*
 * AUX handler critical section start and end.
 * 
 * Only one process can be in the critical section and all keyboard sends are
 * deferred as long as we're inside. This is necessary as we may sleep when
 * waiting for the keyboard controller and other processes / BH's can
 * preempt us. Please note that the input buffer must be flushed when
 * aux_end_atomic() is called and the interrupt is no longer enabled as not
 * doing so might cause the keyboard driver to ignore all incoming keystrokes.
 */

static struct semaphore aux_sema4 = MUTEX;

static inline void aux_start_atomic(void)
{
	down(&aux_sema4);
	disable_bh(KEYBOARD_BH);
}

static inline void aux_end_atomic(void)
{
	enable_bh(KEYBOARD_BH);
	up(&aux_sema4);
}

/*
 * Interrupt from the auxiliary device: a character
 * is waiting in the keyboard/aux controller.
 */

void pcimouse_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
	int head = queue->head;
	int maxhead = (queue->tail-1) & (AUX_BUF_SIZE-1);

	/*
	 * This IRQ might be shared with the 16550A serial chip,
	 * so we check dev_id to see if it was for us.
	 * (See also drivers/sbus/char/su.c).
	 */
	if (dev_id)
		return;

	if ((inb(pcimouse_iobase + KBD_STATUS_REG) & AUX_STAT_OBF) != AUX_STAT_OBF)
		return;

	add_mouse_randomness(queue->buf[head] = inb(pcimouse_iobase + KBD_DATA_REG));
	if (head != maxhead) {
		head++;
		head &= AUX_BUF_SIZE-1;
	}
	queue->head = head;
	aux_ready = 1;
	if (queue->fasync)
		kill_fasync(queue->fasync, SIGIO);
	wake_up_interruptible(&queue->proc_list);
}

static int release_aux(struct inode * inode, struct file * file)
{
	fasync_aux(inode, file, 0);
	if (--aux_count)
		return 0;
	aux_start_atomic();

	/* Disable controller ints */
	aux_write_cmd(AUX_INTS_OFF);
	poll_aux_status();

	/* Disable Aux device */
	outb(KBD_CCMD_MOUSE_DISABLE, pcimouse_iobase + KBD_CNTL_REG);
	poll_aux_status();
	aux_end_atomic();

	MOD_DEC_USE_COUNT;
	return 0;
}

/*
 * Install interrupt handler.
 * Enable auxiliary device.
 */

static int open_aux(struct inode * inode, struct file * file)
{
	if (!aux_present)
		return -ENODEV;
	aux_start_atomic();
	if (aux_count++) {
		aux_end_atomic();
		return 0;
	}
	if (!poll_aux_status()) {		/* FIXME: Race condition */
		aux_count--;
		aux_end_atomic();
		return -EBUSY;
	}
	queue->head = queue->tail = 0;		/* Flush input queue */

	MOD_INC_USE_COUNT;

	poll_aux_status();
	outb(KBD_CCMD_MOUSE_ENABLE, pcimouse_iobase+KBD_CNTL_REG);    /* Enable Aux */
	aux_write_dev(AUX_ENABLE_DEV);			    /* Enable aux device */
	aux_write_cmd(AUX_INTS_ON);			    /* Enable controller ints */
	poll_aux_status();
	aux_end_atomic();

	aux_ready = 0;
	return 0;
}

/*
 * Write to the aux device.
 */

static long write_aux(struct inode * inode, struct file * file,
	const char * buffer, unsigned long count)
{
	int retval = 0;

	if (count) {
		int written = 0;

		aux_start_atomic();
		do {
			char c;
			if (!poll_aux_status())
				break;
			outb(KBD_CCMD_WRITE_MOUSE, pcimouse_iobase + KBD_CNTL_REG);
			if (!poll_aux_status())
				break;
			get_user(c, buffer++);
			outb(c, pcimouse_iobase + KBD_DATA_REG);
			written++;
		} while (--count);
		aux_end_atomic();
		retval = -EIO;
		if (written) {
			retval = written;
			inode->i_mtime = CURRENT_TIME;
		}
	}

	return retval;
}

/*
 *	Generic part continues...
 */

/*
 * Put bytes from input queue to buffer.
 */

static long read_aux(struct inode * inode, struct file * file,
	char * buffer, unsigned long count)
{
	struct wait_queue wait = { current, NULL };
	int i = count;
	unsigned char c;

	if (queue_empty()) {
		if (file->f_flags & O_NONBLOCK)
			return -EAGAIN;
		add_wait_queue(&queue->proc_list, &wait);
repeat:
		current->state = TASK_INTERRUPTIBLE;
		if (queue_empty() && !signal_pending(current)) {
			schedule();
			goto repeat;
		}
		current->state = TASK_RUNNING;
		remove_wait_queue(&queue->proc_list, &wait);
	}
	while (i > 0 && !queue_empty()) {
		c = get_from_queue();
		put_user(c, buffer++);
		i--;
	}
	aux_ready = !queue_empty();
	if (count-i) {
		inode->i_atime = CURRENT_TIME;
		return count-i;
	}
	if (signal_pending(current))
		return -ERESTARTSYS;
	return 0;
}

static unsigned int aux_poll(struct file *file, poll_table * wait)
{
	poll_wait(&queue->proc_list, wait);
	if (aux_ready)
		return POLLIN | POLLRDNORM;
	return 0;
}

struct file_operations psaux_fops = {
	NULL,		/* seek */
	read_aux,
	write_aux,
	NULL, 		/* readdir */
	aux_poll,
	NULL, 		/* ioctl */
	NULL,		/* mmap */
	open_aux,
	release_aux,
	NULL,
	fasync_aux,
};

static struct miscdevice psaux_mouse = {
	PSMOUSE_MINOR, "ps2aux", &psaux_fops
};

__initfunc(int pcimouse_init(void))
{
	struct linux_ebus *ebus;
	struct linux_ebus_device *edev;
	struct linux_ebus_child *child;

	for_all_ebusdev(edev, ebus) {
		if(!strcmp(edev->prom_name, "8042")) {
			for_each_edevchild(edev, child) {
				if (!strcmp(child->prom_name, "kdmouse"))
					goto found;
			}
		}
	}
	printk("pcimouse_init: no 8042 found\n");
	return -ENODEV;

found:
	pcimouse_iobase = child->base_address[0];
	/*
	 * Just in case the iobases for kbd/mouse ever differ...
	 */
	if (!check_region(pcimouse_iobase, sizeof(unsigned long)))
		request_region(pcimouse_iobase, sizeof(unsigned long),
			       "8042 controller");

	pcimouse_irq = child->irqs[0];
	if (request_irq(pcimouse_irq, &pcimouse_interrupt,
		        SA_SHIRQ, "mouse", NULL)) {
		printk("8042: Cannot register IRQ %x\n", pcimouse_irq);
		return -ENODEV;
	}

	printk("8042(mouse): iobase[%016lx] irq[%x]\n",
	       pcimouse_iobase, pcimouse_irq);

	printk("8042: PS/2 auxiliary pointing device detected.\n");
	aux_present = 1;
	kbd_read_mask = AUX_STAT_OBF;

	misc_register(&psaux_mouse);
	queue = (struct aux_queue *) kmalloc(sizeof(*queue), GFP_KERNEL);
	memset(queue, 0, sizeof(*queue));
	queue->head = queue->tail = 0;
	queue->proc_list = NULL;
	aux_start_atomic();
	outb(KBD_CCMD_MOUSE_ENABLE, pcimouse_iobase + KBD_CNTL_REG);
	aux_write_ack(AUX_SET_SAMPLE);
	aux_write_ack(100);
	aux_write_ack(AUX_SET_RES);
	aux_write_ack(3);
	aux_write_ack(AUX_SET_SCALE21);
	poll_aux_status();
	outb(KBD_CCMD_MOUSE_DISABLE, pcimouse_iobase + KBD_CNTL_REG);
	poll_aux_status();
	outb(KBD_CCMD_WRITE_MODE, pcimouse_iobase + KBD_CNTL_REG);
	poll_aux_status();
	outb(AUX_INTS_OFF, pcimouse_iobase + KBD_DATA_REG);
	poll_aux_status();
	aux_end_atomic();

	return 0;
}


__initfunc(static int ps2_init(void))
{
	int err;

	err = pcikbd_probe();
	if (err)
		return err;

	err = pcimouse_init();
	if (err)
		return err;

	return 0;
}

__initfunc(int ps2kbd_probe(unsigned long *memory_start))
{
	int pnode, enode, node, dnode;
	int kbnode = 0, msnode = 0, bnode = 0;
	int devices = 0;
	char prop[128];
	int len;

	/*
	 * Get the nodes for keyboard and mouse from 'aliases'...
	 */
        node = prom_getchild(prom_root_node);
	node = prom_searchsiblings(node, "aliases");
	if (!node)
		return -ENODEV;

	len = prom_getproperty(node, "keyboard", prop, sizeof(prop));
	if (len > 0)
		kbnode = prom_pathtoinode(prop);
	if (!kbnode)
		return -ENODEV;

	len = prom_getproperty(node, "mouse", prop, sizeof(prop));
	if (len > 0)
		msnode = prom_pathtoinode(prop);
	if (!msnode)
		return -ENODEV;

	/*
	 * Find matching EBus nodes...
	 */
        node = prom_getchild(prom_root_node);
	pnode = prom_searchsiblings(node, "pci");

	/*
	 * For each PCI bus...
	 */
	while (pnode) {
		enode = prom_getchild(pnode);
		enode = prom_searchsiblings(enode, "ebus");

		/*
		 * For each EBus on this PCI...
		 */
		while (enode) {
			node = prom_getchild(enode);
			bnode = prom_searchsiblings(node, "beeper");

			node = prom_getchild(enode);
			node = prom_searchsiblings(node, "8042");

			/*
			 * For each '8042' on this EBus...
			 */
			while (node) {
				/*
				 * Does it match?
				 */
				dnode = prom_getchild(node);
				dnode = prom_searchsiblings(dnode, "kb_ps2");
				if (dnode == kbnode) {
					kbd_node = kbnode;
					beep_node = bnode;
					++devices;
				}

				dnode = prom_getchild(node);
				dnode = prom_searchsiblings(dnode, "kdmouse");
				if (dnode == msnode) {
					ms_node = msnode;
					++devices;
				}

				/*
				 * Found everything we need?
				 */
				if (devices == 2)
					goto found;

				node = prom_getsibling(node);
				node = prom_searchsiblings(node, "8042");
			}
			enode = prom_getsibling(enode);
			enode = prom_searchsiblings(enode, "ebus");
		}
		pnode = prom_getsibling(pnode);
		pnode = prom_searchsiblings(pnode, "pci");
	}
	return -ENODEV;

found:
        sunserial_setinitfunc(memory_start, ps2_init);
	return 0;
}