arch/alpha/kernel/sys_wildfire.c - maze/linux - Git at Google

 /*
  *  linux/arch/alpha/kernel/sys_wildfire.c
  *
  *  Wildfire support.
  *
  *  Copyright (C) 2000 Andrea Arcangeli <andrea@suse.de> SuSE
  */

 #include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/mm.h>
 #include <linux/sched.h>
 #include <linux/pci.h>
 #include <linux/init.h>
 #include <linux/bitops.h>

 #include <asm/ptrace.h>
 #include <asm/system.h>
 #include <asm/dma.h>
 #include <asm/irq.h>
 #include <asm/mmu_context.h>
 #include <asm/io.h>
 #include <asm/pgtable.h>
 #include <asm/core_wildfire.h>
 #include <asm/hwrpb.h>
 #include <asm/tlbflush.h>

 #include "proto.h"
 #include "irq_impl.h"
 #include "pci_impl.h"
 #include "machvec_impl.h"

 static unsigned long cached_irq_mask[WILDFIRE_NR_IRQS/(sizeof(long)*8)];

 DEFINE_SPINLOCK(wildfire_irq_lock);

 static int doing_init_irq_hw = 0;

 static void
 wildfire_update_irq_hw(unsigned int irq)
 {
 	int qbbno = (irq >> 8) & (WILDFIRE_MAX_QBB - 1);
 	int pcano = (irq >> 6) & (WILDFIRE_PCA_PER_QBB - 1);
 	wildfire_pca *pca;
 	volatile unsigned long * enable0;

 	if (!WILDFIRE_PCA_EXISTS(qbbno, pcano)) {
 		if (!doing_init_irq_hw) {
 			printk(KERN_ERR "wildfire_update_irq_hw:"
 			       " got irq %d for non-existent PCA %d"
 			       " on QBB %d.\n",
 			       irq, pcano, qbbno);
 		}
 		return;
 	}

 	pca = WILDFIRE_pca(qbbno, pcano);
 	enable0 = (unsigned long *) &pca->pca_int[0].enable; /* ??? */

 	*enable0 = cached_irq_mask[qbbno * WILDFIRE_PCA_PER_QBB + pcano];
 	mb();
 	*enable0;
 }

 static void __init
 wildfire_init_irq_hw(void)
 {
 #if 0
 	register wildfire_pca * pca = WILDFIRE_pca(0, 0);
 	volatile unsigned long * enable0, * enable1, * enable2, *enable3;
 	volatile unsigned long * target0, * target1, * target2, *target3;

 	enable0 = (unsigned long *) &pca->pca_int[0].enable;
 	enable1 = (unsigned long *) &pca->pca_int[1].enable;
 	enable2 = (unsigned long *) &pca->pca_int[2].enable;
 	enable3 = (unsigned long *) &pca->pca_int[3].enable;

 	target0 = (unsigned long *) &pca->pca_int[0].target;
 	target1 = (unsigned long *) &pca->pca_int[1].target;
 	target2 = (unsigned long *) &pca->pca_int[2].target;
 	target3 = (unsigned long *) &pca->pca_int[3].target;

 	*enable0 = *enable1 = *enable2 = *enable3 = 0;

 	*target0 = (1UL<<8) | WILDFIRE_QBB(0);
 	*target1 = *target2 = *target3 = 0;

 	mb();

 	*enable0; *enable1; *enable2; *enable3;
 	*target0; *target1; *target2; *target3;

 #else
 	int i;

 	doing_init_irq_hw = 1;

 	/* Need to update only once for every possible PCA. */
 	for (i = 0; i < WILDFIRE_NR_IRQS; i+=WILDFIRE_IRQ_PER_PCA)
 		wildfire_update_irq_hw(i);

 	doing_init_irq_hw = 0;
 #endif
 }

 static void
 wildfire_enable_irq(unsigned int irq)
 {
 	if (irq < 16)
 		i8259a_enable_irq(irq);

 	spin_lock(&wildfire_irq_lock);
 	set_bit(irq, &cached_irq_mask);
 	wildfire_update_irq_hw(irq);
 	spin_unlock(&wildfire_irq_lock);
 }

 static void
 wildfire_disable_irq(unsigned int irq)
 {
 	if (irq < 16)
 		i8259a_disable_irq(irq);

 	spin_lock(&wildfire_irq_lock);
 	clear_bit(irq, &cached_irq_mask);
 	wildfire_update_irq_hw(irq);
 	spin_unlock(&wildfire_irq_lock);
 }

 static void
 wildfire_mask_and_ack_irq(unsigned int irq)
 {
 	if (irq < 16)
 		i8259a_mask_and_ack_irq(irq);

 	spin_lock(&wildfire_irq_lock);
 	clear_bit(irq, &cached_irq_mask);
 	wildfire_update_irq_hw(irq);
 	spin_unlock(&wildfire_irq_lock);
 }

 static unsigned int
 wildfire_startup_irq(unsigned int irq)
 {
 	wildfire_enable_irq(irq);
 	return 0; /* never anything pending */
 }

 static void
 wildfire_end_irq(unsigned int irq)
 {
 #if 0
 	if (!irq_desc[irq].action)
 		printk("got irq %d\n", irq);
 #endif
 	if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))
 		wildfire_enable_irq(irq);
 }

 static struct hw_interrupt_type wildfire_irq_type = {
 	.typename	= "WILDFIRE",
 	.startup	= wildfire_startup_irq,
 	.shutdown	= wildfire_disable_irq,
 	.enable		= wildfire_enable_irq,
 	.disable	= wildfire_disable_irq,
 	.ack		= wildfire_mask_and_ack_irq,
 	.end		= wildfire_end_irq,
 };

 static void __init
 wildfire_init_irq_per_pca(int qbbno, int pcano)
 {
 	int i, irq_bias;
 	unsigned long io_bias;
 	static struct irqaction isa_enable = {
 		.handler	= no_action,
 		.name		= "isa_enable",
 	};

 	irq_bias = qbbno * (WILDFIRE_PCA_PER_QBB * WILDFIRE_IRQ_PER_PCA)
 		 + pcano * WILDFIRE_IRQ_PER_PCA;

 	/* Only need the following for first PCI bus per PCA. */
 	io_bias = WILDFIRE_IO(qbbno, pcano<<1) - WILDFIRE_IO_BIAS;

 #if 0
 	outb(0, DMA1_RESET_REG + io_bias);
 	outb(0, DMA2_RESET_REG + io_bias);
 	outb(DMA_MODE_CASCADE, DMA2_MODE_REG + io_bias);
 	outb(0, DMA2_MASK_REG + io_bias);
 #endif

 #if 0
 	/* ??? Not sure how to do this, yet... */
 	init_i8259a_irqs(); /* ??? */
 #endif

 	for (i = 0; i < 16; ++i) {
 		if (i == 2)
 			continue;
 		irq_desc[i+irq_bias].status = IRQ_DISABLED | IRQ_LEVEL;
 		irq_desc[i+irq_bias].chip = &wildfire_irq_type;
 	}

 	irq_desc[36+irq_bias].status = IRQ_DISABLED | IRQ_LEVEL;
 	irq_desc[36+irq_bias].chip = &wildfire_irq_type;
 	for (i = 40; i < 64; ++i) {
 		irq_desc[i+irq_bias].status = IRQ_DISABLED | IRQ_LEVEL;
 		irq_desc[i+irq_bias].chip = &wildfire_irq_type;
 	}

 	setup_irq(32+irq_bias, &isa_enable);
 }

 static void __init
 wildfire_init_irq(void)
 {
 	int qbbno, pcano;

 #if 1
 	wildfire_init_irq_hw();
 	init_i8259a_irqs();
 #endif

 	for (qbbno = 0; qbbno < WILDFIRE_MAX_QBB; qbbno++) {
 	  if (WILDFIRE_QBB_EXISTS(qbbno)) {
 	    for (pcano = 0; pcano < WILDFIRE_PCA_PER_QBB; pcano++) {
 	      if (WILDFIRE_PCA_EXISTS(qbbno, pcano)) {
 		wildfire_init_irq_per_pca(qbbno, pcano);
 	      }
 	    }
 	  }
 	}
 }

 static void
 wildfire_device_interrupt(unsigned long vector, struct pt_regs * regs)
 {
 	int irq;

 	irq = (vector - 0x800) >> 4;

 	/*
 	 * bits 10-8:	source QBB ID
 	 * bits 7-6:	PCA
 	 * bits 5-0:	irq in PCA
 	 */

 	handle_irq(irq, regs);
 	return;
 }

 /*
  * PCI Fixup configuration.
  *
  * Summary per PCA (2 PCI or HIPPI buses):
  *
  * Bit      Meaning
  * 0-15     ISA
  *
  *32        ISA summary
  *33        SMI
  *34        NMI
  *36        builtin QLogic SCSI (or slot 0 if no IO module)
  *40        Interrupt Line A from slot 2 PCI0
  *41        Interrupt Line B from slot 2 PCI0
  *42        Interrupt Line C from slot 2 PCI0
  *43        Interrupt Line D from slot 2 PCI0
  *44        Interrupt Line A from slot 3 PCI0
  *45        Interrupt Line B from slot 3 PCI0
  *46        Interrupt Line C from slot 3 PCI0
  *47        Interrupt Line D from slot 3 PCI0
  *
  *48        Interrupt Line A from slot 4 PCI1
  *49        Interrupt Line B from slot 4 PCI1
  *50        Interrupt Line C from slot 4 PCI1
  *51        Interrupt Line D from slot 4 PCI1
  *52        Interrupt Line A from slot 5 PCI1
  *53        Interrupt Line B from slot 5 PCI1
  *54        Interrupt Line C from slot 5 PCI1
  *55        Interrupt Line D from slot 5 PCI1
  *56        Interrupt Line A from slot 6 PCI1
  *57        Interrupt Line B from slot 6 PCI1
  *58        Interrupt Line C from slot 6 PCI1
  *50        Interrupt Line D from slot 6 PCI1
  *60        Interrupt Line A from slot 7 PCI1
  *61        Interrupt Line B from slot 7 PCI1
  *62        Interrupt Line C from slot 7 PCI1
  *63        Interrupt Line D from slot 7 PCI1
  *
  *
  * IdSel
  *   0	 Cypress Bridge I/O (ISA summary interrupt)
  *   1	 64 bit PCI 0 option slot 1 (SCSI QLogic builtin)
  *   2	 64 bit PCI 0 option slot 2
  *   3	 64 bit PCI 0 option slot 3
  *   4	 64 bit PCI 1 option slot 4
  *   5	 64 bit PCI 1 option slot 5
  *   6	 64 bit PCI 1 option slot 6
  *   7	 64 bit PCI 1 option slot 7
  */

 static int __init
 wildfire_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
 {
 	static char irq_tab[8][5] __initdata = {
 		/*INT    INTA   INTB   INTC   INTD */
 		{ -1,    -1,    -1,    -1,    -1}, /* IdSel 0 ISA Bridge */
 		{ 36,    36,    36+1, 36+2, 36+3}, /* IdSel 1 SCSI builtin */
 		{ 40,    40,    40+1, 40+2, 40+3}, /* IdSel 2 PCI 0 slot 2 */
 		{ 44,    44,    44+1, 44+2, 44+3}, /* IdSel 3 PCI 0 slot 3 */
 		{ 48,    48,    48+1, 48+2, 48+3}, /* IdSel 4 PCI 1 slot 4 */
 		{ 52,    52,    52+1, 52+2, 52+3}, /* IdSel 5 PCI 1 slot 5 */
 		{ 56,    56,    56+1, 56+2, 56+3}, /* IdSel 6 PCI 1 slot 6 */
 		{ 60,    60,    60+1, 60+2, 60+3}, /* IdSel 7 PCI 1 slot 7 */
 	};
 	long min_idsel = 0, max_idsel = 7, irqs_per_slot = 5;

 	struct pci_controller *hose = dev->sysdata;
 	int irq = COMMON_TABLE_LOOKUP;

 	if (irq > 0) {
 		int qbbno = hose->index >> 3;
 		int pcano = (hose->index >> 1) & 3;
 		irq += (qbbno << 8) + (pcano << 6);
 	}
 	return irq;
 }


 /*
  * The System Vectors
  */

 struct alpha_machine_vector wildfire_mv __initmv = {
 	.vector_name		= "WILDFIRE",
 	DO_EV6_MMU,
 	DO_DEFAULT_RTC,
 	DO_WILDFIRE_IO,
 	.machine_check		= wildfire_machine_check,
 	.max_isa_dma_address	= ALPHA_MAX_ISA_DMA_ADDRESS,
 	.min_io_address		= DEFAULT_IO_BASE,
 	.min_mem_address	= DEFAULT_MEM_BASE,

 	.nr_irqs		= WILDFIRE_NR_IRQS,
 	.device_interrupt	= wildfire_device_interrupt,

 	.init_arch		= wildfire_init_arch,
 	.init_irq		= wildfire_init_irq,
 	.init_rtc		= common_init_rtc,
 	.init_pci		= common_init_pci,
 	.kill_arch		= wildfire_kill_arch,
 	.pci_map_irq		= wildfire_map_irq,
 	.pci_swizzle		= common_swizzle,

 	.pa_to_nid		= wildfire_pa_to_nid,
 	.cpuid_to_nid		= wildfire_cpuid_to_nid,
 	.node_mem_start		= wildfire_node_mem_start,
 	.node_mem_size		= wildfire_node_mem_size,
 };
 ALIAS_MV(wildfire)
	/*
	* linux/arch/alpha/kernel/sys_wildfire.c
	*
	* Wildfire support.
	*
	* Copyright (C) 2000 Andrea Arcangeli <andrea@suse.de> SuSE
	*/

	#include <linux/kernel.h>
	#include <linux/types.h>
	#include <linux/mm.h>
	#include <linux/sched.h>
	#include <linux/pci.h>
	#include <linux/init.h>
	#include <linux/bitops.h>

	#include <asm/ptrace.h>
	#include <asm/system.h>
	#include <asm/dma.h>
	#include <asm/irq.h>
	#include <asm/mmu_context.h>
	#include <asm/io.h>
	#include <asm/pgtable.h>
	#include <asm/core_wildfire.h>
	#include <asm/hwrpb.h>
	#include <asm/tlbflush.h>

	#include "proto.h"
	#include "irq_impl.h"
	#include "pci_impl.h"
	#include "machvec_impl.h"

	static unsigned long cached_irq_mask[WILDFIRE_NR_IRQS/(sizeof(long)*8)];

	DEFINE_SPINLOCK(wildfire_irq_lock);

	static int doing_init_irq_hw = 0;

	static void
	wildfire_update_irq_hw(unsigned int irq)
	{
	int qbbno = (irq >> 8) & (WILDFIRE_MAX_QBB - 1);
	int pcano = (irq >> 6) & (WILDFIRE_PCA_PER_QBB - 1);
	wildfire_pca *pca;
	volatile unsigned long * enable0;

	if (!WILDFIRE_PCA_EXISTS(qbbno, pcano)) {
	if (!doing_init_irq_hw) {
	printk(KERN_ERR "wildfire_update_irq_hw:"
	" got irq %d for non-existent PCA %d"
	" on QBB %d.\n",
	irq, pcano, qbbno);
	}
	return;
	}

	pca = WILDFIRE_pca(qbbno, pcano);
	enable0 = (unsigned long ) &pca->pca_int[0].enable; / ??? */

	enable0 = cached_irq_mask[qbbno WILDFIRE_PCA_PER_QBB + pcano];
	mb();
	*enable0;
	}

	static void __init
	wildfire_init_irq_hw(void)
	{
	#if 0
	register wildfire_pca * pca = WILDFIRE_pca(0, 0);
	volatile unsigned long * enable0, * enable1, * enable2, *enable3;
	volatile unsigned long * target0, * target1, * target2, *target3;

	enable0 = (unsigned long *) &pca->pca_int[0].enable;
	enable1 = (unsigned long *) &pca->pca_int[1].enable;
	enable2 = (unsigned long *) &pca->pca_int[2].enable;
	enable3 = (unsigned long *) &pca->pca_int[3].enable;

	target0 = (unsigned long *) &pca->pca_int[0].target;
	target1 = (unsigned long *) &pca->pca_int[1].target;
	target2 = (unsigned long *) &pca->pca_int[2].target;
	target3 = (unsigned long *) &pca->pca_int[3].target;

	enable0 = enable1 = enable2 = enable3 = 0;

	*target0 = (1UL<<8) \| WILDFIRE_QBB(0);
	target1 = target2 = *target3 = 0;

	mb();

	enable0; enable1; enable2; enable3;
	target0; target1; target2; target3;

	#else
	int i;

	doing_init_irq_hw = 1;

	/* Need to update only once for every possible PCA. */
	for (i = 0; i < WILDFIRE_NR_IRQS; i+=WILDFIRE_IRQ_PER_PCA)
	wildfire_update_irq_hw(i);

	doing_init_irq_hw = 0;
	#endif
	}

	static void
	wildfire_enable_irq(unsigned int irq)
	{
	if (irq < 16)
	i8259a_enable_irq(irq);

	spin_lock(&wildfire_irq_lock);
	set_bit(irq, &cached_irq_mask);
	wildfire_update_irq_hw(irq);
	spin_unlock(&wildfire_irq_lock);
	}

	static void
	wildfire_disable_irq(unsigned int irq)
	{
	if (irq < 16)
	i8259a_disable_irq(irq);

	spin_lock(&wildfire_irq_lock);
	clear_bit(irq, &cached_irq_mask);
	wildfire_update_irq_hw(irq);
	spin_unlock(&wildfire_irq_lock);
	}

	static void
	wildfire_mask_and_ack_irq(unsigned int irq)
	{
	if (irq < 16)
	i8259a_mask_and_ack_irq(irq);

	spin_lock(&wildfire_irq_lock);
	clear_bit(irq, &cached_irq_mask);
	wildfire_update_irq_hw(irq);
	spin_unlock(&wildfire_irq_lock);
	}

	static unsigned int
	wildfire_startup_irq(unsigned int irq)
	{
	wildfire_enable_irq(irq);
	return 0; /* never anything pending */
	}

	static void
	wildfire_end_irq(unsigned int irq)
	{
	#if 0
	if (!irq_desc[irq].action)
	printk("got irq %d\n", irq);
	#endif
	if (!(irq_desc[irq].status & (IRQ_DISABLED\|IRQ_INPROGRESS)))
	wildfire_enable_irq(irq);
	}

	static struct hw_interrupt_type wildfire_irq_type = {
	.typename = "WILDFIRE",
	.startup = wildfire_startup_irq,
	.shutdown = wildfire_disable_irq,
	.enable = wildfire_enable_irq,
	.disable = wildfire_disable_irq,
	.ack = wildfire_mask_and_ack_irq,
	.end = wildfire_end_irq,
	};

	static void __init
	wildfire_init_irq_per_pca(int qbbno, int pcano)
	{
	int i, irq_bias;
	unsigned long io_bias;
	static struct irqaction isa_enable = {
	.handler = no_action,
	.name = "isa_enable",
	};

	irq_bias = qbbno * (WILDFIRE_PCA_PER_QBB * WILDFIRE_IRQ_PER_PCA)
	+ pcano * WILDFIRE_IRQ_PER_PCA;

	/* Only need the following for first PCI bus per PCA. */
	io_bias = WILDFIRE_IO(qbbno, pcano<<1) - WILDFIRE_IO_BIAS;

	#if 0
	outb(0, DMA1_RESET_REG + io_bias);
	outb(0, DMA2_RESET_REG + io_bias);
	outb(DMA_MODE_CASCADE, DMA2_MODE_REG + io_bias);
	outb(0, DMA2_MASK_REG + io_bias);
	#endif

	#if 0
	/* ??? Not sure how to do this, yet... */
	init_i8259a_irqs(); /* ??? */
	#endif

	for (i = 0; i < 16; ++i) {
	if (i == 2)
	continue;
	irq_desc[i+irq_bias].status = IRQ_DISABLED \| IRQ_LEVEL;
	irq_desc[i+irq_bias].chip = &wildfire_irq_type;
	}

	irq_desc[36+irq_bias].status = IRQ_DISABLED \| IRQ_LEVEL;
	irq_desc[36+irq_bias].chip = &wildfire_irq_type;
	for (i = 40; i < 64; ++i) {
	irq_desc[i+irq_bias].status = IRQ_DISABLED \| IRQ_LEVEL;
	irq_desc[i+irq_bias].chip = &wildfire_irq_type;
	}

	setup_irq(32+irq_bias, &isa_enable);
	}

	static void __init
	wildfire_init_irq(void)
	{
	int qbbno, pcano;

	#if 1
	wildfire_init_irq_hw();
	init_i8259a_irqs();
	#endif

	for (qbbno = 0; qbbno < WILDFIRE_MAX_QBB; qbbno++) {
	if (WILDFIRE_QBB_EXISTS(qbbno)) {
	for (pcano = 0; pcano < WILDFIRE_PCA_PER_QBB; pcano++) {
	if (WILDFIRE_PCA_EXISTS(qbbno, pcano)) {
	wildfire_init_irq_per_pca(qbbno, pcano);
	}
	}
	}
	}
	}

	static void
	wildfire_device_interrupt(unsigned long vector, struct pt_regs * regs)
	{
	int irq;

	irq = (vector - 0x800) >> 4;

	/*
	* bits 10-8: source QBB ID
	* bits 7-6: PCA
	* bits 5-0: irq in PCA
	*/

	handle_irq(irq, regs);
	return;
	}

	/*
	* PCI Fixup configuration.
	*
	* Summary per PCA (2 PCI or HIPPI buses):
	*
	* Bit Meaning
	* 0-15 ISA
	*
	*32 ISA summary
	*33 SMI
	*34 NMI
	*36 builtin QLogic SCSI (or slot 0 if no IO module)
	*40 Interrupt Line A from slot 2 PCI0
	*41 Interrupt Line B from slot 2 PCI0
	*42 Interrupt Line C from slot 2 PCI0
	*43 Interrupt Line D from slot 2 PCI0
	*44 Interrupt Line A from slot 3 PCI0
	*45 Interrupt Line B from slot 3 PCI0
	*46 Interrupt Line C from slot 3 PCI0
	*47 Interrupt Line D from slot 3 PCI0
	*
	*48 Interrupt Line A from slot 4 PCI1
	*49 Interrupt Line B from slot 4 PCI1
	*50 Interrupt Line C from slot 4 PCI1
	*51 Interrupt Line D from slot 4 PCI1
	*52 Interrupt Line A from slot 5 PCI1
	*53 Interrupt Line B from slot 5 PCI1
	*54 Interrupt Line C from slot 5 PCI1
	*55 Interrupt Line D from slot 5 PCI1
	*56 Interrupt Line A from slot 6 PCI1
	*57 Interrupt Line B from slot 6 PCI1
	*58 Interrupt Line C from slot 6 PCI1
	*50 Interrupt Line D from slot 6 PCI1
	*60 Interrupt Line A from slot 7 PCI1
	*61 Interrupt Line B from slot 7 PCI1
	*62 Interrupt Line C from slot 7 PCI1
	*63 Interrupt Line D from slot 7 PCI1
	*
	*
	* IdSel
	* 0 Cypress Bridge I/O (ISA summary interrupt)
	* 1 64 bit PCI 0 option slot 1 (SCSI QLogic builtin)
	* 2 64 bit PCI 0 option slot 2
	* 3 64 bit PCI 0 option slot 3
	* 4 64 bit PCI 1 option slot 4
	* 5 64 bit PCI 1 option slot 5
	* 6 64 bit PCI 1 option slot 6
	* 7 64 bit PCI 1 option slot 7
	*/

	static int __init
	wildfire_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
	{
	static char irq_tab[8][5] __initdata = {
	/INT INTA INTB INTC INTD /
	{ -1, -1, -1, -1, -1}, /* IdSel 0 ISA Bridge */
	{ 36, 36, 36+1, 36+2, 36+3}, /* IdSel 1 SCSI builtin */
	{ 40, 40, 40+1, 40+2, 40+3}, /* IdSel 2 PCI 0 slot 2 */
	{ 44, 44, 44+1, 44+2, 44+3}, /* IdSel 3 PCI 0 slot 3 */
	{ 48, 48, 48+1, 48+2, 48+3}, /* IdSel 4 PCI 1 slot 4 */
	{ 52, 52, 52+1, 52+2, 52+3}, /* IdSel 5 PCI 1 slot 5 */
	{ 56, 56, 56+1, 56+2, 56+3}, /* IdSel 6 PCI 1 slot 6 */
	{ 60, 60, 60+1, 60+2, 60+3}, /* IdSel 7 PCI 1 slot 7 */
	};
	long min_idsel = 0, max_idsel = 7, irqs_per_slot = 5;

	struct pci_controller *hose = dev->sysdata;
	int irq = COMMON_TABLE_LOOKUP;

	if (irq > 0) {
	int qbbno = hose->index >> 3;
	int pcano = (hose->index >> 1) & 3;
	irq += (qbbno << 8) + (pcano << 6);
	}
	return irq;
	}


	/*
	* The System Vectors
	*/

	struct alpha_machine_vector wildfire_mv __initmv = {
	.vector_name = "WILDFIRE",
	DO_EV6_MMU,
	DO_DEFAULT_RTC,
	DO_WILDFIRE_IO,
	.machine_check = wildfire_machine_check,
	.max_isa_dma_address = ALPHA_MAX_ISA_DMA_ADDRESS,
	.min_io_address = DEFAULT_IO_BASE,
	.min_mem_address = DEFAULT_MEM_BASE,

	.nr_irqs = WILDFIRE_NR_IRQS,
	.device_interrupt = wildfire_device_interrupt,

	.init_arch = wildfire_init_arch,
	.init_irq = wildfire_init_irq,
	.init_rtc = common_init_rtc,
	.init_pci = common_init_pci,
	.kill_arch = wildfire_kill_arch,
	.pci_map_irq = wildfire_map_irq,
	.pci_swizzle = common_swizzle,

	.pa_to_nid = wildfire_pa_to_nid,
	.cpuid_to_nid = wildfire_cpuid_to_nid,
	.node_mem_start = wildfire_node_mem_start,
	.node_mem_size = wildfire_node_mem_size,
	};
	ALIAS_MV(wildfire)