Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 1178 insertions, 0 deletions

diff --git a/arch/i386/mach-voyager/voyager_cat.c b/arch/i386/mach-voyager/voyager_cat.c
new file mode 100644
index 00000000000..23967fe658d
--- /dev/null
+++ b/arch/i386/mach-voyager/voyager_cat.c
@@ -0,0 +1,1178 @@
+/* -*- mode: c; c-basic-offset: 8 -*- */
+
+/* Copyright (C) 1999,2001
+ *
+ * Author: J.E.J.Bottomley@HansenPartnership.com
+ *
+ * linux/arch/i386/kernel/voyager_cat.c
+ *
+ * This file contains all the logic for manipulating the CAT bus
+ * in a level 5 machine.
+ *
+ * The CAT bus is a serial configuration and test bus.  Its primary
+ * uses are to probe the initial configuration of the system and to
+ * diagnose error conditions when a system interrupt occurs.  The low
+ * level interface is fairly primitive, so most of this file consists
+ * of bit shift manipulations to send and receive packets on the
+ * serial bus */
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/completion.h>
+#include <linux/sched.h>
+#include <asm/voyager.h>
+#include <asm/vic.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <asm/io.h>
+
+#ifdef VOYAGER_CAT_DEBUG
+#define CDEBUG(x)	printk x
+#else
+#define CDEBUG(x)
+#endif
+
+/* the CAT command port */
+#define CAT_CMD		(sspb + 0xe)
+/* the CAT data port */
+#define CAT_DATA	(sspb + 0xd)
+
+/* the internal cat functions */
+static void cat_pack(__u8 *msg, __u16 start_bit, __u8 *data, 
+		     __u16 num_bits);
+static void cat_unpack(__u8 *msg, __u16 start_bit, __u8 *data,
+		       __u16 num_bits);
+static void cat_build_header(__u8 *header, const __u16 len, 
+			     const __u16 smallest_reg_bits,
+			     const __u16 longest_reg_bits);
+static int cat_sendinst(voyager_module_t *modp, voyager_asic_t *asicp,
+			__u8 reg, __u8 op);
+static int cat_getdata(voyager_module_t *modp, voyager_asic_t *asicp,
+		       __u8 reg, __u8 *value);
+static int cat_shiftout(__u8 *data, __u16 data_bytes, __u16 header_bytes,
+			__u8 pad_bits);
+static int cat_write(voyager_module_t *modp, voyager_asic_t *asicp, __u8 reg,
+		     __u8 value);
+static int cat_read(voyager_module_t *modp, voyager_asic_t *asicp, __u8 reg,
+		    __u8 *value);
+static int cat_subread(voyager_module_t *modp, voyager_asic_t *asicp,
+		       __u16 offset, __u16 len, void *buf);
+static int cat_senddata(voyager_module_t *modp, voyager_asic_t *asicp,
+			__u8 reg, __u8 value);
+static int cat_disconnect(voyager_module_t *modp, voyager_asic_t *asicp);
+static int cat_connect(voyager_module_t *modp, voyager_asic_t *asicp);
+
+static inline const char *
+cat_module_name(int module_id)
+{
+	switch(module_id) {
+	case 0x10:
+		return "Processor Slot 0";
+	case 0x11:
+		return "Processor Slot 1";
+	case 0x12:
+		return "Processor Slot 2";
+	case 0x13:
+		return "Processor Slot 4";
+	case 0x14:
+		return "Memory Slot 0";
+	case 0x15:
+		return "Memory Slot 1";
+	case 0x18:
+		return "Primary Microchannel";
+	case 0x19:
+		return "Secondary Microchannel";
+	case 0x1a:
+		return "Power Supply Interface";
+	case 0x1c:
+		return "Processor Slot 5";
+	case 0x1d:
+		return "Processor Slot 6";
+	case 0x1e:
+		return "Processor Slot 7";
+	case 0x1f:
+		return "Processor Slot 8";
+	default:
+		return "Unknown Module";
+	}
+}
+
+static int sspb = 0;		/* stores the super port location */
+int voyager_8slot = 0;		/* set to true if a 51xx monster */
+
+voyager_module_t *voyager_cat_list;
+
+/* the I/O port assignments for the VIC and QIC */
+static struct resource vic_res = {
+	"Voyager Interrupt Controller", 0xFC00, 0xFC6F };
+static struct resource qic_res = {
+	"Quad Interrupt Controller", 0xFC70, 0xFCFF };
+
+/* This function is used to pack a data bit stream inside a message.
+ * It writes num_bits of the data buffer in msg starting at start_bit.
+ * Note: This function assumes that any unused bit in the data stream
+ * is set to zero so that the ors will work correctly */
+#define BITS_PER_BYTE 8
+static void
+cat_pack(__u8 *msg, const __u16 start_bit, __u8 *data, const __u16 num_bits)
+{
+	/* compute initial shift needed */
+	const __u16 offset = start_bit % BITS_PER_BYTE;
+	__u16 len = num_bits / BITS_PER_BYTE;
+	__u16 byte = start_bit / BITS_PER_BYTE;
+	__u16 residue = (num_bits % BITS_PER_BYTE) + offset;
+	int i;
+
+	/* adjust if we have more than a byte of residue */
+	if(residue >= BITS_PER_BYTE) {
+		residue -= BITS_PER_BYTE;
+		len++;
+	}
+
+	/* clear out the bits.  We assume here that if len==0 then
+	 * residue >= offset.  This is always true for the catbus
+	 * operations */
+	msg[byte] &= 0xff << (BITS_PER_BYTE - offset); 
+	msg[byte++] |= data[0] >> offset;
+	if(len == 0)
+		return;
+	for(i = 1; i < len; i++)
+		msg[byte++] = (data[i-1] << (BITS_PER_BYTE - offset))
+			| (data[i] >> offset);
+	if(residue != 0) {
+		__u8 mask = 0xff >> residue;
+		__u8 last_byte = data[i-1] << (BITS_PER_BYTE - offset)
+			| (data[i] >> offset);
+		
+		last_byte &= ~mask;
+		msg[byte] &= mask;
+		msg[byte] |= last_byte;
+	}
+	return;
+}
+/* unpack the data again (same arguments as cat_pack()). data buffer
+ * must be zero populated.
+ *
+ * Function: given a message string move to start_bit and copy num_bits into
+ * data (starting at bit 0 in data).
+ */
+static void
+cat_unpack(__u8 *msg, const __u16 start_bit, __u8 *data, const __u16 num_bits)
+{
+	/* compute initial shift needed */
+	const __u16 offset = start_bit % BITS_PER_BYTE;
+	__u16 len = num_bits / BITS_PER_BYTE;
+	const __u8 last_bits = num_bits % BITS_PER_BYTE;
+	__u16 byte = start_bit / BITS_PER_BYTE;
+	int i;
+
+	if(last_bits != 0)
+		len++;
+
+	/* special case: want < 8 bits from msg and we can get it from
+	 * a single byte of the msg */
+	if(len == 0 && BITS_PER_BYTE - offset >= num_bits) {
+		data[0] = msg[byte] << offset;
+		data[0] &= 0xff >> (BITS_PER_BYTE - num_bits);
+		return;
+	}
+	for(i = 0; i < len; i++) {
+		/* this annoying if has to be done just in case a read of
+		 * msg one beyond the array causes a panic */
+		if(offset != 0) {
+			data[i] = msg[byte++] << offset;
+			data[i] |= msg[byte] >> (BITS_PER_BYTE - offset);
+		}
+		else {
+			data[i] = msg[byte++];
+		}
+	}
+	/* do we need to truncate the final byte */
+	if(last_bits != 0) {
+		data[i-1] &= 0xff << (BITS_PER_BYTE - last_bits);
+	}
+	return;
+}
+
+static void
+cat_build_header(__u8 *header, const __u16 len, const __u16 smallest_reg_bits,
+		 const __u16 longest_reg_bits)
+{
+	int i;
+	__u16 start_bit = (smallest_reg_bits - 1) % BITS_PER_BYTE;
+	__u8 *last_byte = &header[len - 1];
+
+	if(start_bit == 0)
+		start_bit = 1;	/* must have at least one bit in the hdr */
+	
+	for(i=0; i < len; i++)
+		header[i] = 0;
+
+	for(i = start_bit; i > 0; i--)
+		*last_byte = ((*last_byte) << 1) + 1;
+
+}
+
+static int
+cat_sendinst(voyager_module_t *modp, voyager_asic_t *asicp, __u8 reg, __u8 op)
+{
+	__u8 parity, inst, inst_buf[4] = { 0 };
+	__u8 iseq[VOYAGER_MAX_SCAN_PATH], hseq[VOYAGER_MAX_REG_SIZE];
+	__u16 ibytes, hbytes, padbits;
+	int i;
+	
+	/* 
+	 * Parity is the parity of the register number + 1 (READ_REGISTER
+	 * and WRITE_REGISTER always add '1' to the number of bits == 1)
+	 */
+	parity = (__u8)(1 + (reg & 0x01) +
+	         ((__u8)(reg & 0x02) >> 1) +
+	         ((__u8)(reg & 0x04) >> 2) +
+	         ((__u8)(reg & 0x08) >> 3)) % 2;
+
+	inst = ((parity << 7) | (reg << 2) | op);
+
+	outb(VOYAGER_CAT_IRCYC, CAT_CMD);
+	if(!modp->scan_path_connected) {
+		if(asicp->asic_id != VOYAGER_CAT_ID) {
+			printk("**WARNING***: cat_sendinst has disconnected scan path not to CAT asic\n");
+			return 1;
+		}
+		outb(VOYAGER_CAT_HEADER, CAT_DATA);
+		outb(inst, CAT_DATA);
+		if(inb(CAT_DATA) != VOYAGER_CAT_HEADER) {
+			CDEBUG(("VOYAGER CAT: cat_sendinst failed to get CAT_HEADER\n"));
+			return 1;
+		}
+		return 0;
+	}
+	ibytes = modp->inst_bits / BITS_PER_BYTE;
+	if((padbits = modp->inst_bits % BITS_PER_BYTE) != 0) {
+		padbits = BITS_PER_BYTE - padbits;
+		ibytes++;
+	}
+	hbytes = modp->largest_reg / BITS_PER_BYTE;
+	if(modp->largest_reg % BITS_PER_BYTE)
+		hbytes++;
+	CDEBUG(("cat_sendinst: ibytes=%d, hbytes=%d\n", ibytes, hbytes));
+	/* initialise the instruction sequence to 0xff */
+	for(i=0; i < ibytes + hbytes; i++)
+		iseq[i] = 0xff;
+	cat_build_header(hseq, hbytes, modp->smallest_reg, modp->largest_reg);
+	cat_pack(iseq, modp->inst_bits, hseq, hbytes * BITS_PER_BYTE);
+	inst_buf[0] = inst;
+	inst_buf[1] = 0xFF >> (modp->largest_reg % BITS_PER_BYTE);
+	cat_pack(iseq, asicp->bit_location, inst_buf, asicp->ireg_length);
+#ifdef VOYAGER_CAT_DEBUG
+	printk("ins = 0x%x, iseq: ", inst);
+	for(i=0; i< ibytes + hbytes; i++)
+		printk("0x%x ", iseq[i]);
+	printk("\n");
+#endif
+	if(cat_shiftout(iseq, ibytes, hbytes, padbits)) {
+		CDEBUG(("VOYAGER CAT: cat_sendinst: cat_shiftout failed\n"));
+		return 1;
+	}
+	CDEBUG(("CAT SHIFTOUT DONE\n"));
+	return 0;
+}
+
+static int
+cat_getdata(voyager_module_t *modp, voyager_asic_t *asicp, __u8 reg, 
+	    __u8 *value)
+{
+	if(!modp->scan_path_connected) {
+		if(asicp->asic_id != VOYAGER_CAT_ID) {
+			CDEBUG(("VOYAGER CAT: ERROR: cat_getdata to CAT asic with scan path connected\n"));
+			return 1;
+		}
+		if(reg > VOYAGER_SUBADDRHI) 
+			outb(VOYAGER_CAT_RUN, CAT_CMD);
+		outb(VOYAGER_CAT_DRCYC, CAT_CMD);
+		outb(VOYAGER_CAT_HEADER, CAT_DATA);
+		*value = inb(CAT_DATA);
+		outb(0xAA, CAT_DATA);
+		if(inb(CAT_DATA) != VOYAGER_CAT_HEADER) {
+			CDEBUG(("cat_getdata: failed to get VOYAGER_CAT_HEADER\n"));
+			return 1;
+		}
+		return 0;
+	}
+	else {
+		__u16 sbits = modp->num_asics -1 + asicp->ireg_length;
+		__u16 sbytes = sbits / BITS_PER_BYTE;
+		__u16 tbytes;
+		__u8 string[VOYAGER_MAX_SCAN_PATH], trailer[VOYAGER_MAX_REG_SIZE];
+		__u8 padbits;
+		int i;
+		
+		outb(VOYAGER_CAT_DRCYC, CAT_CMD);
+
+		if((padbits = sbits % BITS_PER_BYTE) != 0) {
+			padbits = BITS_PER_BYTE - padbits;
+			sbytes++;
+		}
+		tbytes = asicp->ireg_length / BITS_PER_BYTE;
+		if(asicp->ireg_length % BITS_PER_BYTE)
+			tbytes++;
+		CDEBUG(("cat_getdata: tbytes = %d, sbytes = %d, padbits = %d\n",
+			tbytes,	sbytes, padbits));
+		cat_build_header(trailer, tbytes, 1, asicp->ireg_length);
+
+		
+		for(i = tbytes - 1; i >= 0; i--) {
+			outb(trailer[i], CAT_DATA);
+			string[sbytes + i] = inb(CAT_DATA);
+		}
+
+		for(i = sbytes - 1; i >= 0; i--) {
+			outb(0xaa, CAT_DATA);
+			string[i] = inb(CAT_DATA);
+		}
+		*value = 0;
+		cat_unpack(string, padbits + (tbytes * BITS_PER_BYTE) + asicp->asic_location, value, asicp->ireg_length);
+#ifdef VOYAGER_CAT_DEBUG
+		printk("value=0x%x, string: ", *value);
+		for(i=0; i< tbytes+sbytes; i++)
+			printk("0x%x ", string[i]);
+		printk("\n");
+#endif
+		
+		/* sanity check the rest of the return */
+		for(i=0; i < tbytes; i++) {
+			__u8 input = 0;
+
+			cat_unpack(string, padbits + (i * BITS_PER_BYTE), &input, BITS_PER_BYTE);
+			if(trailer[i] != input) {
+				CDEBUG(("cat_getdata: failed to sanity check rest of ret(%d) 0x%x != 0x%x\n", i, input, trailer[i]));
+				return 1;
+			}
+		}
+		CDEBUG(("cat_getdata DONE\n"));
+		return 0;
+	}
+}
+
+static int
+cat_shiftout(__u8 *data, __u16 data_bytes, __u16 header_bytes, __u8 pad_bits)
+{
+	int i;
+	
+	for(i = data_bytes + header_bytes - 1; i >= header_bytes; i--)
+		outb(data[i], CAT_DATA);
+
+	for(i = header_bytes - 1; i >= 0; i--) {
+		__u8 header = 0;
+		__u8 input;
+
+		outb(data[i], CAT_DATA);
+		input = inb(CAT_DATA);
+		CDEBUG(("cat_shiftout: returned 0x%x\n", input));
+		cat_unpack(data, ((data_bytes + i) * BITS_PER_BYTE) - pad_bits,
+			   &header, BITS_PER_BYTE);
+		if(input != header) {
+			CDEBUG(("VOYAGER CAT: cat_shiftout failed to return header 0x%x != 0x%x\n", input, header));
+			return 1;
+		}
+	}
+	return 0;
+}
+
+static int
+cat_senddata(voyager_module_t *modp, voyager_asic_t *asicp, 
+	     __u8 reg, __u8 value)
+{
+	outb(VOYAGER_CAT_DRCYC, CAT_CMD);
+	if(!modp->scan_path_connected) {
+		if(asicp->asic_id != VOYAGER_CAT_ID) {
+			CDEBUG(("VOYAGER CAT: ERROR: scan path disconnected when asic != CAT\n"));
+			return 1;
+		}
+		outb(VOYAGER_CAT_HEADER, CAT_DATA);
+		outb(value, CAT_DATA);
+		if(inb(CAT_DATA) != VOYAGER_CAT_HEADER) {
+			CDEBUG(("cat_senddata: failed to get correct header response to sent data\n"));
+			return 1;
+		}
+		if(reg > VOYAGER_SUBADDRHI) {
+			outb(VOYAGER_CAT_RUN, CAT_CMD);
+			outb(VOYAGER_CAT_END, CAT_CMD);
+			outb(VOYAGER_CAT_RUN, CAT_CMD);
+		}
+		
+		return 0;
+	}
+	else {
+		__u16 hbytes = asicp->ireg_length / BITS_PER_BYTE;
+		__u16 dbytes = (modp->num_asics - 1 + asicp->ireg_length)/BITS_PER_BYTE;
+		__u8 padbits, dseq[VOYAGER_MAX_SCAN_PATH], 
+			hseq[VOYAGER_MAX_REG_SIZE];
+		int i;
+
+		if((padbits = (modp->num_asics - 1 
+			       + asicp->ireg_length) % BITS_PER_BYTE) != 0) {
+			padbits = BITS_PER_BYTE - padbits;
+			dbytes++;
+		}
+		if(asicp->ireg_length % BITS_PER_BYTE)
+			hbytes++;
+		
+		cat_build_header(hseq, hbytes, 1, asicp->ireg_length);
+		
+		for(i = 0; i < dbytes + hbytes; i++)
+			dseq[i] = 0xff;
+		CDEBUG(("cat_senddata: dbytes=%d, hbytes=%d, padbits=%d\n",
+			dbytes, hbytes, padbits));
+		cat_pack(dseq, modp->num_asics - 1 + asicp->ireg_length,
+			 hseq, hbytes * BITS_PER_BYTE);
+		cat_pack(dseq, asicp->asic_location, &value, 
+			 asicp->ireg_length);
+#ifdef VOYAGER_CAT_DEBUG
+		printk("dseq ");
+		for(i=0; i<hbytes+dbytes; i++) {
+			printk("0x%x ", dseq[i]);
+		}
+		printk("\n");
+#endif
+		return cat_shiftout(dseq, dbytes, hbytes, padbits);
+	}
+}
+
+static int
+cat_write(voyager_module_t *modp, voyager_asic_t *asicp, __u8 reg,
+	 __u8 value)
+{
+	if(cat_sendinst(modp, asicp, reg, VOYAGER_WRITE_CONFIG))
+		return 1;
+	return cat_senddata(modp, asicp, reg, value);
+}
+
+static int
+cat_read(voyager_module_t *modp, voyager_asic_t *asicp, __u8 reg,
+	 __u8 *value)
+{
+	if(cat_sendinst(modp, asicp, reg, VOYAGER_READ_CONFIG))
+		return 1;
+	return cat_getdata(modp, asicp, reg, value);
+}
+
+static int
+cat_subaddrsetup(voyager_module_t *modp, voyager_asic_t *asicp, __u16 offset,
+		 __u16 len)
+{
+	__u8 val;
+
+	if(len > 1) {
+		/* set auto increment */
+		__u8 newval;
+		
+		if(cat_read(modp, asicp, VOYAGER_AUTO_INC_REG, &val)) {
+			CDEBUG(("cat_subaddrsetup: read of VOYAGER_AUTO_INC_REG failed\n"));
+			return 1;
+		}
+		CDEBUG(("cat_subaddrsetup: VOYAGER_AUTO_INC_REG = 0x%x\n", val));
+		newval = val | VOYAGER_AUTO_INC;
+		if(newval != val) {
+			if(cat_write(modp, asicp, VOYAGER_AUTO_INC_REG, val)) {
+				CDEBUG(("cat_subaddrsetup: write to VOYAGER_AUTO_INC_REG failed\n"));
+				return 1;
+			}
+		}
+	}
+	if(cat_write(modp, asicp, VOYAGER_SUBADDRLO, (__u8)(offset &0xff))) {
+		CDEBUG(("cat_subaddrsetup: write to SUBADDRLO failed\n"));
+		return 1;
+	}
+	if(asicp->subaddr > VOYAGER_SUBADDR_LO) {
+		if(cat_write(modp, asicp, VOYAGER_SUBADDRHI, (__u8)(offset >> 8))) {
+			CDEBUG(("cat_subaddrsetup: write to SUBADDRHI failed\n"));
+			return 1;
+		}
+		cat_read(modp, asicp, VOYAGER_SUBADDRHI, &val);
+		CDEBUG(("cat_subaddrsetup: offset = %d, hi = %d\n", offset, val));
+	}
+	cat_read(modp, asicp, VOYAGER_SUBADDRLO, &val);
+	CDEBUG(("cat_subaddrsetup: offset = %d, lo = %d\n", offset, val));
+	return 0;
+}
+		
+static int
+cat_subwrite(voyager_module_t *modp, voyager_asic_t *asicp, __u16 offset,
+	    __u16 len, void *buf)
+{
+	int i, retval;
+
+	/* FIXME: need special actions for VOYAGER_CAT_ID here */
+	if(asicp->asic_id == VOYAGER_CAT_ID) {
+		CDEBUG(("cat_subwrite: ATTEMPT TO WRITE TO CAT ASIC\n"));
+		/* FIXME -- This is supposed to be handled better
+		 * There is a problem writing to the cat asic in the
+		 * PSI.  The 30us delay seems to work, though */
+		udelay(30);
+	}
+		
+	if((retval = cat_subaddrsetup(modp, asicp, offset, len)) != 0) {
+		printk("cat_subwrite: cat_subaddrsetup FAILED\n");
+		return retval;
+	}
+	
+	if(cat_sendinst(modp, asicp, VOYAGER_SUBADDRDATA, VOYAGER_WRITE_CONFIG)) {
+		printk("cat_subwrite: cat_sendinst FAILED\n");
+		return 1;
+	}
+	for(i = 0; i < len; i++) {
+		if(cat_senddata(modp, asicp, 0xFF, ((__u8 *)buf)[i])) {
+			printk("cat_subwrite: cat_sendata element at %d FAILED\n", i);
+			return 1;
+		}
+	}
+	return 0;
+}
+static int
+cat_subread(voyager_module_t *modp, voyager_asic_t *asicp, __u16 offset,
+	    __u16 len, void *buf)
+{
+	int i, retval;
+
+	if((retval = cat_subaddrsetup(modp, asicp, offset, len)) != 0) {
+		CDEBUG(("cat_subread: cat_subaddrsetup FAILED\n"));
+		return retval;
+	}
+
+	if(cat_sendinst(modp, asicp, VOYAGER_SUBADDRDATA, VOYAGER_READ_CONFIG)) {
+		CDEBUG(("cat_subread: cat_sendinst failed\n"));
+		return 1;
+	}
+	for(i = 0; i < len; i++) {
+		if(cat_getdata(modp, asicp, 0xFF,
+			       &((__u8 *)buf)[i])) {
+			CDEBUG(("cat_subread: cat_getdata element %d failed\n", i));
+			return 1;
+		}
+	}
+	return 0;
+}
+
+
+/* buffer for storing EPROM data read in during initialisation */
+static __initdata __u8 eprom_buf[0xFFFF];
+static voyager_module_t *voyager_initial_module;
+
+/* Initialise the cat bus components.  We assume this is called by the
+ * boot cpu *after* all memory initialisation has been done (so we can
+ * use kmalloc) but before smp initialisation, so we can probe the SMP
+ * configuration and pick up necessary information.  */
+void
+voyager_cat_init(void)
+{
+	voyager_module_t **modpp = &voyager_initial_module;
+	voyager_asic_t **asicpp;
+	voyager_asic_t *qabc_asic = NULL;
+	int i, j;
+	unsigned long qic_addr = 0;
+	__u8 qabc_data[0x20];
+	__u8 num_submodules, val;
+	voyager_eprom_hdr_t *eprom_hdr = (voyager_eprom_hdr_t *)&eprom_buf[0];
+	
+	__u8 cmos[4];
+	unsigned long addr;
+	
+	/* initiallise the SUS mailbox */
+	for(i=0; i<sizeof(cmos); i++)
+		cmos[i] = voyager_extended_cmos_read(VOYAGER_DUMP_LOCATION + i);
+	addr = *(unsigned long *)cmos;
+	if((addr & 0xff000000) != 0xff000000) {
+		printk(KERN_ERR "Voyager failed to get SUS mailbox (addr = 0x%lx\n", addr);
+	} else {
+		static struct resource res;
+		
+		res.name = "voyager SUS";
+		res.start = addr;
+		res.end = addr+0x3ff;
+		
+		request_resource(&iomem_resource, &res);
+		voyager_SUS = (struct voyager_SUS *)
+			ioremap(addr, 0x400);
+		printk(KERN_NOTICE "Voyager SUS mailbox version 0x%x\n",
+		       voyager_SUS->SUS_version);
+		voyager_SUS->kernel_version = VOYAGER_MAILBOX_VERSION;
+		voyager_SUS->kernel_flags = VOYAGER_OS_HAS_SYSINT;
+	}
+
+	/* clear the processor counts */
+	voyager_extended_vic_processors = 0;
+	voyager_quad_processors = 0;
+
+
+
+	printk("VOYAGER: beginning CAT bus probe\n");
+	/* set up the SuperSet Port Block which tells us where the
+	 * CAT communication port is */
+	sspb = inb(VOYAGER_SSPB_RELOCATION_PORT) * 0x100;
+	VDEBUG(("VOYAGER DEBUG: sspb = 0x%x\n", sspb));
+
+	/* now find out if were 8 slot or normal */
+	if((inb(VIC_PROC_WHO_AM_I) & EIGHT_SLOT_IDENTIFIER)
+	   == EIGHT_SLOT_IDENTIFIER) {
+		voyager_8slot = 1;
+		printk(KERN_NOTICE "Voyager: Eight slot 51xx configuration detected\n");
+	}
+
+	for(i = VOYAGER_MIN_MODULE;
+	    i <= VOYAGER_MAX_MODULE; i++) {
+		__u8 input;
+		int asic;
+		__u16 eprom_size;
+		__u16 sp_offset;
+
+		outb(VOYAGER_CAT_DESELECT, VOYAGER_CAT_CONFIG_PORT);
+		outb(i, VOYAGER_CAT_CONFIG_PORT);
+
+		/* check the presence of the module */
+		outb(VOYAGER_CAT_RUN, CAT_CMD);
+		outb(VOYAGER_CAT_IRCYC, CAT_CMD);
+		outb(VOYAGER_CAT_HEADER, CAT_DATA);
+		/* stream series of alternating 1's and 0's to stimulate
+		 * response */
+		outb(0xAA, CAT_DATA);
+		input = inb(CAT_DATA);
+		outb(VOYAGER_CAT_END, CAT_CMD);
+		if(input != VOYAGER_CAT_HEADER) {
+			continue;
+		}
+		CDEBUG(("VOYAGER DEBUG: found module id 0x%x, %s\n", i,
+			cat_module_name(i)));
+		*modpp = kmalloc(sizeof(voyager_module_t), GFP_KERNEL); /*&voyager_module_storage[cat_count++];*/
+		if(*modpp == NULL) {
+			printk("**WARNING** kmalloc failure in cat_init\n");
+			continue;
+		}
+		memset(*modpp, 0, sizeof(voyager_module_t));
+		/* need temporary asic for cat_subread.  It will be
+		 * filled in correctly later */
+		(*modpp)->asic = kmalloc(sizeof(voyager_asic_t), GFP_KERNEL); /*&voyager_asic_storage[asic_count];*/
+		if((*modpp)->asic == NULL) {
+			printk("**WARNING** kmalloc failure in cat_init\n");
+			continue;
+		}
+		memset((*modpp)->asic, 0, sizeof(voyager_asic_t));
+		(*modpp)->asic->asic_id = VOYAGER_CAT_ID;
+		(*modpp)->asic->subaddr = VOYAGER_SUBADDR_HI;
+		(*modpp)->module_addr = i;
+		(*modpp)->scan_path_connected = 0;
+		if(i == VOYAGER_PSI) {
+			/* Exception leg for modules with no EEPROM */
+			printk("Module \"%s\"\n", cat_module_name(i));
+			continue;
+		}
+			       
+		CDEBUG(("cat_init: Reading eeprom for module 0x%x at offset %d\n", i, VOYAGER_XSUM_END_OFFSET));
+		outb(VOYAGER_CAT_RUN, CAT_CMD);
+		cat_disconnect(*modpp, (*modpp)->asic);
+		if(cat_subread(*modpp, (*modpp)->asic,
+			       VOYAGER_XSUM_END_OFFSET, sizeof(eprom_size),
+			       &eprom_size)) {
+			printk("**WARNING**: Voyager couldn't read EPROM size for module 0x%x\n", i);
+			outb(VOYAGER_CAT_END, CAT_CMD);
+			continue;
+		}
+		if(eprom_size > sizeof(eprom_buf)) {
+			printk("**WARNING**: Voyager insufficient size to read EPROM data, module 0x%x.  Need %d\n", i, eprom_size);
+			outb(VOYAGER_CAT_END, CAT_CMD);
+			continue;
+		}
+		outb(VOYAGER_CAT_END, CAT_CMD);
+		outb(VOYAGER_CAT_RUN, CAT_CMD);
+		CDEBUG(("cat_init: module 0x%x, eeprom_size %d\n", i, eprom_size));
+		if(cat_subread(*modpp, (*modpp)->asic, 0, 
+			       eprom_size, eprom_buf)) {
+			outb(VOYAGER_CAT_END, CAT_CMD);
+			continue;
+		}
+		outb(VOYAGER_CAT_END, CAT_CMD);
+		printk("Module \"%s\", version 0x%x, tracer 0x%x, asics %d\n",
+		       cat_module_name(i), eprom_hdr->version_id,
+		       *((__u32 *)eprom_hdr->tracer),  eprom_hdr->num_asics);
+		(*modpp)->ee_size = eprom_hdr->ee_size;
+		(*modpp)->num_asics = eprom_hdr->num_asics;
+		asicpp = &((*modpp)->asic);
+		sp_offset = eprom_hdr->scan_path_offset;
+		/* All we really care about are the Quad cards.  We
+                 * identify them because they are in a processor slot
+                 * and have only four asics */
+		if((i < 0x10 || (i>=0x14 && i < 0x1c) || i>0x1f)) {
+			modpp = &((*modpp)->next);
+			continue;
+		}
+		/* Now we know it's in a processor slot, does it have
+		 * a quad baseboard submodule */
+		outb(VOYAGER_CAT_RUN, CAT_CMD);
+		cat_read(*modpp, (*modpp)->asic, VOYAGER_SUBMODPRESENT,
+			 &num_submodules);
+		/* lowest two bits, active low */
+		num_submodules = ~(0xfc | num_submodules);
+		CDEBUG(("VOYAGER CAT: %d submodules present\n", num_submodules));
+		if(num_submodules == 0) {
+			/* fill in the dyadic extended processors */
+			__u8 cpu = i & 0x07;
+
+			printk("Module \"%s\": Dyadic Processor Card\n",
+			       cat_module_name(i));
+			voyager_extended_vic_processors |= (1<<cpu);
+			cpu += 4;
+			voyager_extended_vic_processors |= (1<<cpu);
+			outb(VOYAGER_CAT_END, CAT_CMD);
+			continue;
+		}
+
+		/* now we want to read the asics on the first submodule,
+		 * which should be the quad base board */
+
+		cat_read(*modpp, (*modpp)->asic, VOYAGER_SUBMODSELECT, &val);
+		CDEBUG(("cat_init: SUBMODSELECT value = 0x%x\n", val));
+		val = (val & 0x7c) | VOYAGER_QUAD_BASEBOARD;
+		cat_write(*modpp, (*modpp)->asic, VOYAGER_SUBMODSELECT, val);
+
+		outb(VOYAGER_CAT_END, CAT_CMD);
+			 
+
+		CDEBUG(("cat_init: Reading eeprom for module 0x%x at offset %d\n", i, VOYAGER_XSUM_END_OFFSET));
+		outb(VOYAGER_CAT_RUN, CAT_CMD);
+		cat_disconnect(*modpp, (*modpp)->asic);
+		if(cat_subread(*modpp, (*modpp)->asic,
+			       VOYAGER_XSUM_END_OFFSET, sizeof(eprom_size),
+			       &eprom_size)) {
+			printk("**WARNING**: Voyager couldn't read EPROM size for module 0x%x\n", i);
+			outb(VOYAGER_CAT_END, CAT_CMD);
+			continue;
+		}
+		if(eprom_size > sizeof(eprom_buf)) {
+			printk("**WARNING**: Voyager insufficient size to read EPROM data, module 0x%x.  Need %d\n", i, eprom_size);
+			outb(VOYAGER_CAT_END, CAT_CMD);
+			continue;
+		}
+		outb(VOYAGER_CAT_END, CAT_CMD);
+		outb(VOYAGER_CAT_RUN, CAT_CMD);
+		CDEBUG(("cat_init: module 0x%x, eeprom_size %d\n", i, eprom_size));
+		if(cat_subread(*modpp, (*modpp)->asic, 0, 
+			       eprom_size, eprom_buf)) {
+			outb(VOYAGER_CAT_END, CAT_CMD);
+			continue;
+		}
+		outb(VOYAGER_CAT_END, CAT_CMD);
+		/* Now do everything for the QBB submodule 1 */
+		(*modpp)->ee_size = eprom_hdr->ee_size;
+		(*modpp)->num_asics = eprom_hdr->num_asics;
+		asicpp = &((*modpp)->asic);
+		sp_offset = eprom_hdr->scan_path_offset;
+		/* get rid of the dummy CAT asic and read the real one */
+		kfree((*modpp)->asic);
+		for(asic=0; asic < (*modpp)->num_asics; asic++) {
+			int j;
+			voyager_asic_t *asicp = *asicpp 
+				= kmalloc(sizeof(voyager_asic_t), GFP_KERNEL); /*&voyager_asic_storage[asic_count++];*/
+			voyager_sp_table_t *sp_table;
+			voyager_at_t *asic_table;
+			voyager_jtt_t *jtag_table;
+
+			if(asicp == NULL) {
+				printk("**WARNING** kmalloc failure in cat_init\n");
+				continue;
+			}
+			memset(asicp, 0, sizeof(voyager_asic_t));
+			asicpp = &(asicp->next);
+			asicp->asic_location = asic;
+			sp_table = (voyager_sp_table_t *)(eprom_buf + sp_offset);
+			asicp->asic_id = sp_table->asic_id;
+			asic_table = (voyager_at_t *)(eprom_buf + sp_table->asic_data_offset);
+			for(j=0; j<4; j++)
+				asicp->jtag_id[j] = asic_table->jtag_id[j];
+			jtag_table = (voyager_jtt_t *)(eprom_buf + asic_table->jtag_offset);
+			asicp->ireg_length = jtag_table->ireg_len;
+			asicp->bit_location = (*modpp)->inst_bits;
+			(*modpp)->inst_bits += asicp->ireg_length;
+			if(asicp->ireg_length > (*modpp)->largest_reg)
+				(*modpp)->largest_reg = asicp->ireg_length;
+			if (asicp->ireg_length < (*modpp)->smallest_reg ||
+			    (*modpp)->smallest_reg == 0)
+				(*modpp)->smallest_reg = asicp->ireg_length;
+			CDEBUG(("asic 0x%x, ireg_length=%d, bit_location=%d\n",
+				asicp->asic_id, asicp->ireg_length,
+				asicp->bit_location));
+			if(asicp->asic_id == VOYAGER_QUAD_QABC) {
+				CDEBUG(("VOYAGER CAT: QABC ASIC found\n"));
+				qabc_asic = asicp;
+			}
+			sp_offset += sizeof(voyager_sp_table_t);
+		}
+		CDEBUG(("Module inst_bits = %d, largest_reg = %d, smallest_reg=%d\n",
+			(*modpp)->inst_bits, (*modpp)->largest_reg,
+			(*modpp)->smallest_reg));
+		/* OK, now we have the QUAD ASICs set up, use them.
+		 * we need to:
+		 *
+		 * 1. Find the Memory area for the Quad CPIs.
+		 * 2. Find the Extended VIC processor
+		 * 3. Configure a second extended VIC processor (This
+		 *    cannot be done for the 51xx.
+		 * */
+		outb(VOYAGER_CAT_RUN, CAT_CMD);
+		cat_connect(*modpp, (*modpp)->asic);
+		CDEBUG(("CAT CONNECTED!!\n"));
+		cat_subread(*modpp, qabc_asic, 0, sizeof(qabc_data), qabc_data);
+		qic_addr = qabc_data[5] << 8;
+		qic_addr = (qic_addr | qabc_data[6]) << 8;
+		qic_addr = (qic_addr | qabc_data[7]) << 8;
+		printk("Module \"%s\": Quad Processor Card; CPI 0x%lx, SET=0x%x\n",
+		       cat_module_name(i), qic_addr, qabc_data[8]);
+#if 0				/* plumbing fails---FIXME */
+		if((qabc_data[8] & 0xf0) == 0) {
+			/* FIXME: 32 way 8 CPU slot monster cannot be
+			 * plumbed this way---need to check for it */
+
+			printk("Plumbing second Extended Quad Processor\n");
+			/* second VIC line hardwired to Quad CPU 1 */
+			qabc_data[8] |= 0x20;
+			cat_subwrite(*modpp, qabc_asic, 8, 1, &qabc_data[8]);
+#ifdef VOYAGER_CAT_DEBUG
+			/* verify plumbing */
+			cat_subread(*modpp, qabc_asic, 8, 1, &qabc_data[8]);
+			if((qabc_data[8] & 0xf0) == 0) {
+				CDEBUG(("PLUMBING FAILED: 0x%x\n", qabc_data[8]));
+			}
+#endif
+		}
+#endif
+
+		{
+			struct resource *res = kmalloc(sizeof(struct resource),GFP_KERNEL);
+			memset(res, 0, sizeof(struct resource));
+			res->name = kmalloc(128, GFP_KERNEL);
+			sprintf((char *)res->name, "Voyager %s Quad CPI", cat_module_name(i));
+			res->start = qic_addr;
+			res->end = qic_addr + 0x3ff;
+			request_resource(&iomem_resource, res);
+		}
+
+		qic_addr = (unsigned long)ioremap(qic_addr, 0x400);
+				
+		for(j = 0; j < 4; j++) {
+			__u8 cpu;
+
+			if(voyager_8slot) {
+				/* 8 slot has a different mapping,
+				 * each slot has only one vic line, so
+				 * 1 cpu in each slot must be < 8 */
+				cpu = (i & 0x07) + j*8;
+			} else {
+				cpu = (i & 0x03) + j*4;
+			}
+			if( (qabc_data[8] & (1<<j))) {
+				voyager_extended_vic_processors |= (1<<cpu);
+			}
+			if(qabc_data[8] & (1<<(j+4)) ) {
+				/* Second SET register plumbed: Quad
+				 * card has two VIC connected CPUs.
+				 * Secondary cannot be booted as a VIC
+				 * CPU */
+				voyager_extended_vic_processors |= (1<<cpu);
+				voyager_allowed_boot_processors &= (~(1<<cpu));
+			}
+
+			voyager_quad_processors |= (1<<cpu);
+			voyager_quad_cpi_addr[cpu] = (struct voyager_qic_cpi *)
+				(qic_addr+(j<<8));
+			CDEBUG(("CPU%d: CPI address 0x%lx\n", cpu,
+				(unsigned long)voyager_quad_cpi_addr[cpu]));
+		}
+		outb(VOYAGER_CAT_END, CAT_CMD);
+
+		
+		
+		*asicpp = NULL;
+		modpp = &((*modpp)->next);
+	}
+	*modpp = NULL;
+	printk("CAT Bus Initialisation finished: extended procs 0x%x, quad procs 0x%x, allowed vic boot = 0x%x\n", voyager_extended_vic_processors, voyager_quad_processors, voyager_allowed_boot_processors);
+	request_resource(&ioport_resource, &vic_res);
+	if(voyager_quad_processors)
+		request_resource(&ioport_resource, &qic_res);
+	/* set up the front power switch */
+}
+
+int
+voyager_cat_readb(__u8 module, __u8 asic, int reg)
+{
+	return 0;
+}
+
+static int
+cat_disconnect(voyager_module_t *modp, voyager_asic_t *asicp) 
+{
+	__u8 val;
+	int err = 0;
+
+	if(!modp->scan_path_connected)
+		return 0;
+	if(asicp->asic_id != VOYAGER_CAT_ID) {
+		CDEBUG(("cat_disconnect: ASIC is not CAT\n"));
+		return 1;
+	}
+	err = cat_read(modp, asicp, VOYAGER_SCANPATH, &val);
+	if(err) {
+		CDEBUG(("cat_disconnect: failed to read SCANPATH\n"));
+		return err;
+	}
+	val &= VOYAGER_DISCONNECT_ASIC;
+	err = cat_write(modp, asicp, VOYAGER_SCANPATH, val);
+	if(err) {
+		CDEBUG(("cat_disconnect: failed to write SCANPATH\n"));
+		return err;
+	}
+	outb(VOYAGER_CAT_END, CAT_CMD);
+	outb(VOYAGER_CAT_RUN, CAT_CMD);
+	modp->scan_path_connected = 0;
+
+	return 0;
+}
+
+static int
+cat_connect(voyager_module_t *modp, voyager_asic_t *asicp) 
+{
+	__u8 val;
+	int err = 0;
+
+	if(modp->scan_path_connected)
+		return 0;
+	if(asicp->asic_id != VOYAGER_CAT_ID) {
+		CDEBUG(("cat_connect: ASIC is not CAT\n"));
+		return 1;
+	}
+
+	err = cat_read(modp, asicp, VOYAGER_SCANPATH, &val);
+	if(err) {
+		CDEBUG(("cat_connect: failed to read SCANPATH\n"));
+		return err;
+	}
+	val |= VOYAGER_CONNECT_ASIC;
+	err = cat_write(modp, asicp, VOYAGER_SCANPATH, val);
+	if(err) {
+		CDEBUG(("cat_connect: failed to write SCANPATH\n"));
+		return err;
+	}
+	outb(VOYAGER_CAT_END, CAT_CMD);
+	outb(VOYAGER_CAT_RUN, CAT_CMD);
+	modp->scan_path_connected = 1;
+
+	return 0;
+}
+
+void
+voyager_cat_power_off(void)
+{
+	/* Power the machine off by writing to the PSI over the CAT
+         * bus */
+	__u8 data;
+	voyager_module_t psi = { 0 };
+	voyager_asic_t psi_asic = { 0 };
+
+	psi.asic = &psi_asic;
+	psi.asic->asic_id = VOYAGER_CAT_ID;
+	psi.asic->subaddr = VOYAGER_SUBADDR_HI;
+	psi.module_addr = VOYAGER_PSI;
+	psi.scan_path_connected = 0;
+
+	outb(VOYAGER_CAT_END, CAT_CMD);
+	/* Connect the PSI to the CAT Bus */
+	outb(VOYAGER_CAT_DESELECT, VOYAGER_CAT_CONFIG_PORT);
+	outb(VOYAGER_PSI, VOYAGER_CAT_CONFIG_PORT);
+	outb(VOYAGER_CAT_RUN, CAT_CMD);
+	cat_disconnect(&psi, &psi_asic);
+	/* Read the status */
+	cat_subread(&psi, &psi_asic, VOYAGER_PSI_GENERAL_REG, 1, &data);
+	outb(VOYAGER_CAT_END, CAT_CMD);
+	CDEBUG(("PSI STATUS 0x%x\n", data));
+	/* These two writes are power off prep and perform */
+	data = PSI_CLEAR;
+	outb(VOYAGER_CAT_RUN, CAT_CMD);
+	cat_subwrite(&psi, &psi_asic, VOYAGER_PSI_GENERAL_REG, 1, &data);
+	outb(VOYAGER_CAT_END, CAT_CMD);
+	data = PSI_POWER_DOWN;
+	outb(VOYAGER_CAT_RUN, CAT_CMD);
+	cat_subwrite(&psi, &psi_asic, VOYAGER_PSI_GENERAL_REG, 1, &data);
+	outb(VOYAGER_CAT_END, CAT_CMD);
+}
+
+struct voyager_status voyager_status = { 0 };
+
+void
+voyager_cat_psi(__u8 cmd, __u16 reg, __u8 *data)
+{
+	voyager_module_t psi = { 0 };
+	voyager_asic_t psi_asic = { 0 };
+
+	psi.asic = &psi_asic;
+	psi.asic->asic_id = VOYAGER_CAT_ID;
+	psi.asic->subaddr = VOYAGER_SUBADDR_HI;
+	psi.module_addr = VOYAGER_PSI;
+	psi.scan_path_connected = 0;
+
+	outb(VOYAGER_CAT_END, CAT_CMD);
+	/* Connect the PSI to the CAT Bus */
+	outb(VOYAGER_CAT_DESELECT, VOYAGER_CAT_CONFIG_PORT);
+	outb(VOYAGER_PSI, VOYAGER_CAT_CONFIG_PORT);
+	outb(VOYAGER_CAT_RUN, CAT_CMD);
+	cat_disconnect(&psi, &psi_asic);
+	switch(cmd) {
+	case VOYAGER_PSI_READ:
+		cat_read(&psi, &psi_asic, reg, data);
+		break;
+	case VOYAGER_PSI_WRITE:
+		cat_write(&psi, &psi_asic, reg, *data);
+		break;
+	case VOYAGER_PSI_SUBREAD:
+		cat_subread(&psi, &psi_asic, reg, 1, data);
+		break;
+	case VOYAGER_PSI_SUBWRITE:
+		cat_subwrite(&psi, &psi_asic, reg, 1, data);
+		break;
+	default:
+		printk(KERN_ERR "Voyager PSI, unrecognised command %d\n", cmd);
+		break;
+	}
+	outb(VOYAGER_CAT_END, CAT_CMD);
+}
+
+void
+voyager_cat_do_common_interrupt(void)
+{
+	/* This is caused either by a memory parity error or something
+	 * in the PSI */
+	__u8 data;
+	voyager_module_t psi = { 0 };
+	voyager_asic_t psi_asic = { 0 };
+	struct voyager_psi psi_reg;
+	int i;
+ re_read:
+	psi.asic = &psi_asic;
+	psi.asic->asic_id = VOYAGER_CAT_ID;
+	psi.asic->subaddr = VOYAGER_SUBADDR_HI;
+	psi.module_addr = VOYAGER_PSI;
+	psi.scan_path_connected = 0;
+
+	outb(VOYAGER_CAT_END, CAT_CMD);
+	/* Connect the PSI to the CAT Bus */
+	outb(VOYAGER_CAT_DESELECT, VOYAGER_CAT_CONFIG_PORT);
+	outb(VOYAGER_PSI, VOYAGER_CAT_CONFIG_PORT);
+	outb(VOYAGER_CAT_RUN, CAT_CMD);
+	cat_disconnect(&psi, &psi_asic);
+	/* Read the status.  NOTE: Need to read *all* the PSI regs here
+	 * otherwise the cmn int will be reasserted */
+	for(i = 0; i < sizeof(psi_reg.regs); i++) {
+		cat_read(&psi, &psi_asic, i, &((__u8 *)&psi_reg.regs)[i]);
+	}
+	outb(VOYAGER_CAT_END, CAT_CMD);
+	if((psi_reg.regs.checkbit & 0x02) == 0) {
+		psi_reg.regs.checkbit |= 0x02;
+		cat_write(&psi, &psi_asic, 5, psi_reg.regs.checkbit);
+		printk("VOYAGER RE-READ PSI\n");
+		goto re_read;
+	}
+	outb(VOYAGER_CAT_RUN, CAT_CMD);
+	for(i = 0; i < sizeof(psi_reg.subregs); i++) {
+		/* This looks strange, but the PSI doesn't do auto increment
+		 * correctly */
+		cat_subread(&psi, &psi_asic, VOYAGER_PSI_SUPPLY_REG + i, 
+			    1, &((__u8 *)&psi_reg.subregs)[i]); 
+	}
+	outb(VOYAGER_CAT_END, CAT_CMD);
+#ifdef VOYAGER_CAT_DEBUG
+	printk("VOYAGER PSI: ");
+	for(i=0; i<sizeof(psi_reg.regs); i++)
+		printk("%02x ", ((__u8 *)&psi_reg.regs)[i]);
+	printk("\n           ");
+	for(i=0; i<sizeof(psi_reg.subregs); i++)
+		printk("%02x ", ((__u8 *)&psi_reg.subregs)[i]);
+	printk("\n");
+#endif
+	if(psi_reg.regs.intstatus & PSI_MON) {
+		/* switch off or power fail */
+
+		if(psi_reg.subregs.supply & PSI_SWITCH_OFF) {
+			if(voyager_status.switch_off) {
+				printk(KERN_ERR "Voyager front panel switch turned off again---Immediate power off!\n");
+				voyager_cat_power_off();
+				/* not reached */
+			} else {
+				printk(KERN_ERR "Voyager front panel switch turned off\n");
+				voyager_status.switch_off = 1;
+				voyager_status.request_from_kernel = 1;
+				up(&kvoyagerd_sem);
+			}
+			/* Tell the hardware we're taking care of the
+			 * shutdown, otherwise it will power the box off
+			 * within 3 seconds of the switch being pressed and,
+			 * which is much more important to us, continue to 
+			 * assert the common interrupt */
+			data = PSI_CLR_SWITCH_OFF;
+			outb(VOYAGER_CAT_RUN, CAT_CMD);
+			cat_subwrite(&psi, &psi_asic, VOYAGER_PSI_SUPPLY_REG,
+				     1, &data);
+			outb(VOYAGER_CAT_END, CAT_CMD);
+		} else {
+
+			VDEBUG(("Voyager ac fail reg 0x%x\n",
+				psi_reg.subregs.ACfail));
+			if((psi_reg.subregs.ACfail & AC_FAIL_STAT_CHANGE) == 0) {
+				/* No further update */
+				return;
+			}
+#if 0
+			/* Don't bother trying to find out who failed.
+			 * FIXME: This probably makes the code incorrect on
+			 * anything other than a 345x */
+			for(i=0; i< 5; i++) {
+				if( psi_reg.subregs.ACfail &(1<<i)) {
+					break;
+				}
+			}
+			printk(KERN_NOTICE "AC FAIL IN SUPPLY %d\n", i);
+#endif
+			/* DON'T do this: it shuts down the AC PSI 
+			outb(VOYAGER_CAT_RUN, CAT_CMD);
+			data = PSI_MASK_MASK | i;
+			cat_subwrite(&psi, &psi_asic, VOYAGER_PSI_MASK,
+				     1, &data);
+			outb(VOYAGER_CAT_END, CAT_CMD);
+			*/
+			printk(KERN_ERR "Voyager AC power failure\n");
+			outb(VOYAGER_CAT_RUN, CAT_CMD);
+			data = PSI_COLD_START;
+			cat_subwrite(&psi, &psi_asic, VOYAGER_PSI_GENERAL_REG,
+				     1, &data);
+			outb(VOYAGER_CAT_END, CAT_CMD);
+			voyager_status.power_fail = 1;
+			voyager_status.request_from_kernel = 1;
+			up(&kvoyagerd_sem);
+		}
+		
+		
+	} else if(psi_reg.regs.intstatus & PSI_FAULT) {
+		/* Major fault! */
+		printk(KERN_ERR "Voyager PSI Detected major fault, immediate power off!\n");
+		voyager_cat_power_off();
+		/* not reached */
+	} else if(psi_reg.regs.intstatus & (PSI_DC_FAIL | PSI_ALARM
+					    | PSI_CURRENT | PSI_DVM
+					    | PSI_PSCFAULT | PSI_STAT_CHG)) {
+		/* other psi fault */
+
+		printk(KERN_WARNING "Voyager PSI status 0x%x\n", data);
+		/* clear the PSI fault */
+		outb(VOYAGER_CAT_RUN, CAT_CMD);
+		cat_write(&psi, &psi_asic, VOYAGER_PSI_STATUS_REG, 0);
+		outb(VOYAGER_CAT_END, CAT_CMD);
+	}
+}