Linux-2.6.12-rc2v2.6.12-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!

6 files changed, 3657 insertions, 0 deletions

diff --git a/arch/i386/mach-voyager/Makefile b/arch/i386/mach-voyager/Makefile
new file mode 100644
index 00000000000..f24d2965131
--- /dev/null
+++ b/arch/i386/mach-voyager/Makefile
@@ -0,0 +1,8 @@
+#
+# Makefile for the linux kernel.
+#
+
+EXTRA_CFLAGS	+= -I../kernel
+obj-y			:= setup.o voyager_basic.o voyager_thread.o
+
+obj-$(CONFIG_SMP)	+= voyager_smp.o voyager_cat.o
diff --git a/arch/i386/mach-voyager/setup.c b/arch/i386/mach-voyager/setup.c
new file mode 100644
index 00000000000..df123fc487b
--- /dev/null
+++ b/arch/i386/mach-voyager/setup.c
@@ -0,0 +1,48 @@
+/*
+ *	Machine specific setup for generic
+ */
+
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <asm/acpi.h>
+#include <asm/arch_hooks.h>
+
+void __init pre_intr_init_hook(void)
+{
+	init_ISA_irqs();
+}
+
+/*
+ * IRQ2 is cascade interrupt to second interrupt controller
+ */
+static struct irqaction irq2 = { no_action, 0, CPU_MASK_NONE, "cascade", NULL, NULL};
+
+void __init intr_init_hook(void)
+{
+#ifdef CONFIG_SMP
+	smp_intr_init();
+#endif
+
+	if (!acpi_ioapic)
+		setup_irq(2, &irq2);
+}
+
+void __init pre_setup_arch_hook(void)
+{
+	/* Voyagers run their CPUs from independent clocks, so disable
+	 * the TSC code because we can't sync them */
+	tsc_disable = 1;
+}
+
+void __init trap_init_hook(void)
+{
+}
+
+static struct irqaction irq0  = { timer_interrupt, SA_INTERRUPT, CPU_MASK_NONE, "timer", NULL, NULL};
+
+void __init time_init_hook(void)
+{
+	setup_irq(0, &irq0);
+}
diff --git a/arch/i386/mach-voyager/voyager_basic.c b/arch/i386/mach-voyager/voyager_basic.c
new file mode 100644
index 00000000000..602aea240e9
--- /dev/null
+++ b/arch/i386/mach-voyager/voyager_basic.c
@@ -0,0 +1,325 @@
+/* Copyright (C) 1999,2001 
+ *
+ * Author: J.E.J.Bottomley@HansenPartnership.com
+ *
+ * linux/arch/i386/kernel/voyager.c
+ *
+ * This file contains all the voyager specific routines for getting
+ * initialisation of the architecture to function.  For additional
+ * features see:
+ *
+ *	voyager_cat.c - Voyager CAT bus interface
+ *	voyager_smp.c - Voyager SMP hal (emulates linux smp.c)
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/reboot.h>
+#include <linux/sysrq.h>
+#include <asm/io.h>
+#include <asm/voyager.h>
+#include <asm/vic.h>
+#include <linux/pm.h>
+#include <linux/irq.h>
+#include <asm/tlbflush.h>
+#include <asm/arch_hooks.h>
+
+/*
+ * Power off function, if any
+ */
+void (*pm_power_off)(void);
+
+int voyager_level = 0;
+
+struct voyager_SUS *voyager_SUS = NULL;
+
+#ifdef CONFIG_SMP
+static void
+voyager_dump(int dummy1, struct pt_regs *dummy2, struct tty_struct *dummy3)
+{
+	/* get here via a sysrq */
+	voyager_smp_dump();
+}
+
+static struct sysrq_key_op sysrq_voyager_dump_op = {
+	.handler	= voyager_dump,
+	.help_msg	= "Voyager",
+	.action_msg	= "Dump Voyager Status",
+};
+#endif
+
+void
+voyager_detect(struct voyager_bios_info *bios)
+{
+	if(bios->len != 0xff) {
+		int class = (bios->class_1 << 8) 
+			| (bios->class_2 & 0xff);
+
+		printk("Voyager System detected.\n"
+		       "        Class %x, Revision %d.%d\n",
+		       class, bios->major, bios->minor);
+		if(class == VOYAGER_LEVEL4) 
+			voyager_level = 4;
+		else if(class < VOYAGER_LEVEL5_AND_ABOVE)
+			voyager_level = 3;
+		else
+			voyager_level = 5;
+		printk("        Architecture Level %d\n", voyager_level);
+		if(voyager_level < 4)
+			printk("\n**WARNING**: Voyager HAL only supports Levels 4 and 5 Architectures at the moment\n\n");
+		/* install the power off handler */
+		pm_power_off = voyager_power_off;
+#ifdef CONFIG_SMP
+		register_sysrq_key('v', &sysrq_voyager_dump_op);
+#endif
+	} else {
+		printk("\n\n**WARNING**: No Voyager Subsystem Found\n");
+	}
+}
+
+void
+voyager_system_interrupt(int cpl, void *dev_id, struct pt_regs *regs)
+{
+	printk("Voyager: detected system interrupt\n");
+}
+
+/* Routine to read information from the extended CMOS area */
+__u8
+voyager_extended_cmos_read(__u16 addr)
+{
+	outb(addr & 0xff, 0x74);
+	outb((addr >> 8) & 0xff, 0x75);
+	return inb(0x76);
+}
+
+/* internal definitions for the SUS Click Map of memory */
+
+#define CLICK_ENTRIES	16
+#define CLICK_SIZE	4096	/* click to byte conversion for Length */
+
+typedef struct ClickMap {
+	struct Entry {
+		__u32	Address;
+		__u32	Length;
+	} Entry[CLICK_ENTRIES];
+} ClickMap_t;
+
+
+/* This routine is pretty much an awful hack to read the bios clickmap by
+ * mapping it into page 0.  There are usually three regions in the map:
+ * 	Base Memory
+ * 	Extended Memory
+ *	zero length marker for end of map
+ *
+ * Returns are 0 for failure and 1 for success on extracting region.
+ */
+int __init
+voyager_memory_detect(int region, __u32 *start, __u32 *length)
+{
+	int i;
+	int retval = 0;
+	__u8 cmos[4];
+	ClickMap_t *map;
+	unsigned long map_addr;
+	unsigned long old;
+
+	if(region >= CLICK_ENTRIES) {
+		printk("Voyager: Illegal ClickMap region %d\n", region);
+		return 0;
+	}
+
+	for(i = 0; i < sizeof(cmos); i++)
+		cmos[i] = voyager_extended_cmos_read(VOYAGER_MEMORY_CLICKMAP + i);
+
+	map_addr = *(unsigned long *)cmos;
+
+	/* steal page 0 for this */
+	old = pg0[0];
+	pg0[0] = ((map_addr & PAGE_MASK) | _PAGE_RW | _PAGE_PRESENT);
+	local_flush_tlb();
+	/* now clear everything out but page 0 */
+	map = (ClickMap_t *)(map_addr & (~PAGE_MASK));
+
+	/* zero length is the end of the clickmap */
+	if(map->Entry[region].Length != 0) {
+		*length = map->Entry[region].Length * CLICK_SIZE;
+		*start = map->Entry[region].Address;
+		retval = 1;
+	}
+
+	/* replace the mapping */
+	pg0[0] = old;
+	local_flush_tlb();
+	return retval;
+}
+
+/* voyager specific handling code for timer interrupts.  Used to hand
+ * off the timer tick to the SMP code, since the VIC doesn't have an
+ * internal timer (The QIC does, but that's another story). */
+void
+voyager_timer_interrupt(struct pt_regs *regs)
+{
+	if((jiffies & 0x3ff) == 0) {
+
+		/* There seems to be something flaky in either
+		 * hardware or software that is resetting the timer 0
+		 * count to something much higher than it should be
+		 * This seems to occur in the boot sequence, just
+		 * before root is mounted.  Therefore, every 10
+		 * seconds or so, we sanity check the timer zero count
+		 * and kick it back to where it should be.
+		 *
+		 * FIXME: This is the most awful hack yet seen.  I
+		 * should work out exactly what is interfering with
+		 * the timer count settings early in the boot sequence
+		 * and swiftly introduce it to something sharp and
+		 * pointy.  */
+		__u16 val;
+		extern spinlock_t i8253_lock;
+
+		spin_lock(&i8253_lock);
+		
+		outb_p(0x00, 0x43);
+		val = inb_p(0x40);
+		val |= inb(0x40) << 8;
+		spin_unlock(&i8253_lock);
+
+		if(val > LATCH) {
+			printk("\nVOYAGER: countdown timer value too high (%d), resetting\n\n", val);
+			spin_lock(&i8253_lock);
+			outb(0x34,0x43);
+			outb_p(LATCH & 0xff , 0x40);	/* LSB */
+			outb(LATCH >> 8 , 0x40);	/* MSB */
+			spin_unlock(&i8253_lock);
+		}
+	}
+#ifdef CONFIG_SMP
+	smp_vic_timer_interrupt(regs);
+#endif
+}
+
+void
+voyager_power_off(void)
+{
+	printk("VOYAGER Power Off\n");
+
+	if(voyager_level == 5) {
+		voyager_cat_power_off();
+	} else if(voyager_level == 4) {
+		/* This doesn't apparently work on most L4 machines,
+		 * but the specs say to do this to get automatic power
+		 * off.  Unfortunately, if it doesn't power off the
+		 * machine, it ends up doing a cold restart, which
+		 * isn't really intended, so comment out the code */
+#if 0
+		int port;
+
+	  
+		/* enable the voyager Configuration Space */
+		outb((inb(VOYAGER_MC_SETUP) & 0xf0) | 0x8, 
+		     VOYAGER_MC_SETUP);
+		/* the port for the power off flag is an offset from the
+		   floating base */
+		port = (inb(VOYAGER_SSPB_RELOCATION_PORT) << 8) + 0x21;
+		/* set the power off flag */
+		outb(inb(port) | 0x1, port);
+#endif
+	}
+	/* and wait for it to happen */
+	for(;;) {
+		__asm("cli");
+		__asm("hlt");
+	}
+}
+
+/* copied from process.c */
+static inline void
+kb_wait(void)
+{
+	int i;
+
+	for (i=0; i<0x10000; i++)
+		if ((inb_p(0x64) & 0x02) == 0)
+			break;
+}
+
+void
+machine_restart(char *cmd)
+{
+	printk("Voyager Warm Restart\n");
+	kb_wait();
+
+	if(voyager_level == 5) {
+		/* write magic values to the RTC to inform system that
+		 * shutdown is beginning */
+		outb(0x8f, 0x70);
+		outb(0x5 , 0x71);
+		
+		udelay(50);
+		outb(0xfe,0x64);         /* pull reset low */
+	} else if(voyager_level == 4) {
+		__u16 catbase = inb(VOYAGER_SSPB_RELOCATION_PORT)<<8;
+		__u8 basebd = inb(VOYAGER_MC_SETUP);
+		
+		outb(basebd | 0x08, VOYAGER_MC_SETUP);
+		outb(0x02, catbase + 0x21);
+	}
+	for(;;) {
+		asm("cli");
+		asm("hlt");
+	}
+}
+
+EXPORT_SYMBOL(machine_restart);
+
+void
+mca_nmi_hook(void)
+{
+	__u8 dumpval __attribute__((unused)) = inb(0xf823);
+	__u8 swnmi __attribute__((unused)) = inb(0xf813);
+
+	/* FIXME: assume dump switch pressed */
+	/* check to see if the dump switch was pressed */
+	VDEBUG(("VOYAGER: dumpval = 0x%x, swnmi = 0x%x\n", dumpval, swnmi));
+	/* clear swnmi */
+	outb(0xff, 0xf813);
+	/* tell SUS to ignore dump */
+	if(voyager_level == 5 && voyager_SUS != NULL) {
+		if(voyager_SUS->SUS_mbox == VOYAGER_DUMP_BUTTON_NMI) {
+			voyager_SUS->kernel_mbox = VOYAGER_NO_COMMAND;
+			voyager_SUS->kernel_flags |= VOYAGER_OS_IN_PROGRESS;
+			udelay(1000);
+			voyager_SUS->kernel_mbox = VOYAGER_IGNORE_DUMP;
+			voyager_SUS->kernel_flags &= ~VOYAGER_OS_IN_PROGRESS;
+		}
+	}
+	printk(KERN_ERR "VOYAGER: Dump switch pressed, printing CPU%d tracebacks\n", smp_processor_id());
+	show_stack(NULL, NULL);
+	show_state();
+}
+
+
+
+void
+machine_halt(void)
+{
+	/* treat a halt like a power off */
+	machine_power_off();
+}
+
+EXPORT_SYMBOL(machine_halt);
+
+void machine_power_off(void)
+{
+	if (pm_power_off)
+		pm_power_off();
+}
+
+EXPORT_SYMBOL(machine_power_off);
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;