i386: move mach-visws

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

7 files changed, 1 insertions, 715 deletions

diff --git a/arch/i386/Makefile b/arch/i386/Makefile
index 87c959d5f35..191e171b367 100644
--- a/arch/i386/Makefile
+++ b/arch/i386/Makefile
@@ -69,7 +69,7 @@ mcore-$(CONFIG_X86_VOYAGER)	:= arch/i386/mach-voyager
 
 # VISWS subarch support
 mflags-$(CONFIG_X86_VISWS)	:= -Iinclude/asm-i386/mach-visws
-mcore-$(CONFIG_X86_VISWS)	:= arch/i386/mach-visws
+mcore-$(CONFIG_X86_VISWS)	:= arch/x86/mach-visws
 
 # NUMAQ subarch support
 mflags-$(CONFIG_X86_NUMAQ)	:= -Iinclude/asm-i386/mach-numaq
diff --git a/arch/i386/mach-visws/Makefile b/arch/i386/mach-visws/Makefile
deleted file mode 100644
index 835fd96ad76..00000000000
--- a/arch/i386/mach-visws/Makefile
+++ /dev/null
@@ -1,8 +0,0 @@
-#
-# Makefile for the linux kernel.
-#
-
-obj-y				:= setup.o traps.o reboot.o
-
-obj-$(CONFIG_X86_VISWS_APIC)	+= visws_apic.o
-obj-$(CONFIG_X86_LOCAL_APIC)	+= mpparse.o
diff --git a/arch/i386/mach-visws/mpparse.c b/arch/i386/mach-visws/mpparse.c
deleted file mode 100644
index f3c74fab8b9..00000000000
--- a/arch/i386/mach-visws/mpparse.c
+++ /dev/null
@@ -1,101 +0,0 @@
-
-#include <linux/init.h>
-#include <linux/smp.h>
-
-#include <asm/smp.h>
-#include <asm/io.h>
-
-#include "cobalt.h"
-#include "mach_apic.h"
-
-/* Have we found an MP table */
-int smp_found_config;
-
-/*
- * Various Linux-internal data structures created from the
- * MP-table.
- */
-int apic_version [MAX_APICS];
-
-int pic_mode;
-unsigned long mp_lapic_addr;
-
-/* Processor that is doing the boot up */
-unsigned int boot_cpu_physical_apicid = -1U;
-
-/* Bitmask of physically existing CPUs */
-physid_mask_t phys_cpu_present_map;
-
-unsigned int __initdata maxcpus = NR_CPUS;
-
-/*
- * The Visual Workstation is Intel MP compliant in the hardware
- * sense, but it doesn't have a BIOS(-configuration table).
- * No problem for Linux.
- */
-
-static void __init MP_processor_info (struct mpc_config_processor *m)
-{
- 	int ver, logical_apicid;
-	physid_mask_t apic_cpus;
- 	
-	if (!(m->mpc_cpuflag & CPU_ENABLED))
-		return;
-
-	logical_apicid = m->mpc_apicid;
-	printk(KERN_INFO "%sCPU #%d %ld:%ld APIC version %d\n",
-		m->mpc_cpuflag & CPU_BOOTPROCESSOR ? "Bootup " : "",
-		m->mpc_apicid,
-		(m->mpc_cpufeature & CPU_FAMILY_MASK) >> 8,
-		(m->mpc_cpufeature & CPU_MODEL_MASK) >> 4,
-		m->mpc_apicver);
-
-	if (m->mpc_cpuflag & CPU_BOOTPROCESSOR)
-		boot_cpu_physical_apicid = m->mpc_apicid;
-
-	ver = m->mpc_apicver;
-	if ((ver >= 0x14 && m->mpc_apicid >= 0xff) || m->mpc_apicid >= 0xf) {
-		printk(KERN_ERR "Processor #%d INVALID. (Max ID: %d).\n",
-			m->mpc_apicid, MAX_APICS);
-		return;
-	}
-
-	apic_cpus = apicid_to_cpu_present(m->mpc_apicid);
-	physids_or(phys_cpu_present_map, phys_cpu_present_map, apic_cpus);
-	/*
-	 * Validate version
-	 */
-	if (ver == 0x0) {
-		printk(KERN_ERR "BIOS bug, APIC version is 0 for CPU#%d! "
-			"fixing up to 0x10. (tell your hw vendor)\n",
-			m->mpc_apicid);
-		ver = 0x10;
-	}
-	apic_version[m->mpc_apicid] = ver;
-}
-
-void __init find_smp_config(void)
-{
-	struct mpc_config_processor *mp = phys_to_virt(CO_CPU_TAB_PHYS);
-	unsigned short ncpus = readw(phys_to_virt(CO_CPU_NUM_PHYS));
-
-	if (ncpus > CO_CPU_MAX) {
-		printk(KERN_WARNING "find_visws_smp: got cpu count of %d at %p\n",
-			ncpus, mp);
-
-		ncpus = CO_CPU_MAX;
-	}
-
-	if (ncpus > maxcpus)
-		ncpus = maxcpus;
-
-	smp_found_config = 1;
-	while (ncpus--)
-		MP_processor_info(mp++);
-
-	mp_lapic_addr = APIC_DEFAULT_PHYS_BASE;
-}
-
-void __init get_smp_config (void)
-{
-}
diff --git a/arch/i386/mach-visws/reboot.c b/arch/i386/mach-visws/reboot.c
deleted file mode 100644
index 99332abfad4..00000000000
--- a/arch/i386/mach-visws/reboot.c
+++ /dev/null
@@ -1,55 +0,0 @@
-#include <linux/module.h>
-#include <linux/smp.h>
-#include <linux/delay.h>
-
-#include <asm/io.h>
-#include "piix4.h"
-
-void (*pm_power_off)(void);
-EXPORT_SYMBOL(pm_power_off);
-
-void machine_shutdown(void)
-{
-#ifdef CONFIG_SMP
-	smp_send_stop();
-#endif
-}
-
-void machine_emergency_restart(void)
-{
-	/*
-	 * Visual Workstations restart after this
-	 * register is poked on the PIIX4
-	 */
-	outb(PIIX4_RESET_VAL, PIIX4_RESET_PORT);
-}
-
-void machine_restart(char * __unused)
-{
-	machine_shutdown();
-	machine_emergency_restart();
-}
-
-void machine_power_off(void)
-{
-	unsigned short pm_status;
-	extern unsigned int pci_bus0;
-
-	while ((pm_status = inw(PMSTS_PORT)) & 0x100)
-		outw(pm_status, PMSTS_PORT);
-
-	outw(PM_SUSPEND_ENABLE, PMCNTRL_PORT);
-
-	mdelay(10);
-
-#define PCI_CONF1_ADDRESS(bus, devfn, reg) \
-	(0x80000000 | (bus << 16) | (devfn << 8) | (reg & ~3))
-
-	outl(PCI_CONF1_ADDRESS(pci_bus0, SPECIAL_DEV, SPECIAL_REG), 0xCF8);
-	outl(PIIX_SPECIAL_STOP, 0xCFC);
-}
-
-void machine_halt(void)
-{
-}
-
diff --git a/arch/i386/mach-visws/setup.c b/arch/i386/mach-visws/setup.c
deleted file mode 100644
index 1f81f10e03a..00000000000
--- a/arch/i386/mach-visws/setup.c
+++ /dev/null
@@ -1,183 +0,0 @@
-/*
- *  Unmaintained SGI Visual Workstation support.
- *  Split out from setup.c by davej@suse.de
- */
-
-#include <linux/smp.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/module.h>
-
-#include <asm/fixmap.h>
-#include <asm/arch_hooks.h>
-#include <asm/io.h>
-#include <asm/e820.h>
-#include <asm/setup.h>
-#include "cobalt.h"
-#include "piix4.h"
-
-int no_broadcast;
-
-char visws_board_type = -1;
-char visws_board_rev = -1;
-
-void __init visws_get_board_type_and_rev(void)
-{
-	int raw;
-
-	visws_board_type = (char)(inb_p(PIIX_GPI_BD_REG) & PIIX_GPI_BD_REG)
-							 >> PIIX_GPI_BD_SHIFT;
-	/*
-	 * Get Board rev.
-	 * First, we have to initialize the 307 part to allow us access
-	 * to the GPIO registers.  Let's map them at 0x0fc0 which is right
-	 * after the PIIX4 PM section.
-	 */
-	outb_p(SIO_DEV_SEL, SIO_INDEX);
-	outb_p(SIO_GP_DEV, SIO_DATA);	/* Talk to GPIO regs. */
-
-	outb_p(SIO_DEV_MSB, SIO_INDEX);
-	outb_p(SIO_GP_MSB, SIO_DATA);	/* MSB of GPIO base address */
-
-	outb_p(SIO_DEV_LSB, SIO_INDEX);
-	outb_p(SIO_GP_LSB, SIO_DATA);	/* LSB of GPIO base address */
-
-	outb_p(SIO_DEV_ENB, SIO_INDEX);
-	outb_p(1, SIO_DATA);		/* Enable GPIO registers. */
-
-	/*
-	 * Now, we have to map the power management section to write
-	 * a bit which enables access to the GPIO registers.
-	 * What lunatic came up with this shit?
-	 */
-	outb_p(SIO_DEV_SEL, SIO_INDEX);
-	outb_p(SIO_PM_DEV, SIO_DATA);	/* Talk to GPIO regs. */
-
-	outb_p(SIO_DEV_MSB, SIO_INDEX);
-	outb_p(SIO_PM_MSB, SIO_DATA);	/* MSB of PM base address */
-
-	outb_p(SIO_DEV_LSB, SIO_INDEX);
-	outb_p(SIO_PM_LSB, SIO_DATA);	/* LSB of PM base address */
-
-	outb_p(SIO_DEV_ENB, SIO_INDEX);
-	outb_p(1, SIO_DATA);		/* Enable PM registers. */
-
-	/*
-	 * Now, write the PM register which enables the GPIO registers.
-	 */
-	outb_p(SIO_PM_FER2, SIO_PM_INDEX);
-	outb_p(SIO_PM_GP_EN, SIO_PM_DATA);
-
-	/*
-	 * Now, initialize the GPIO registers.
-	 * We want them all to be inputs which is the
-	 * power on default, so let's leave them alone.
-	 * So, let's just read the board rev!
-	 */
-	raw = inb_p(SIO_GP_DATA1);
-	raw &= 0x7f;	/* 7 bits of valid board revision ID. */
-
-	if (visws_board_type == VISWS_320) {
-		if (raw < 0x6) {
-			visws_board_rev = 4;
-		} else if (raw < 0xc) {
-			visws_board_rev = 5;
-		} else {
-			visws_board_rev = 6;
-		}
-	} else if (visws_board_type == VISWS_540) {
-			visws_board_rev = 2;
-		} else {
-			visws_board_rev = raw;
-		}
-
-	printk(KERN_INFO "Silicon Graphics Visual Workstation %s (rev %d) detected\n",
-	       (visws_board_type == VISWS_320 ? "320" :
-	       (visws_board_type == VISWS_540 ? "540" :
-		"unknown")), visws_board_rev);
-}
-
-void __init pre_intr_init_hook(void)
-{
-	init_VISWS_APIC_irqs();
-}
-
-void __init intr_init_hook(void)
-{
-#ifdef CONFIG_X86_LOCAL_APIC
-	apic_intr_init();
-#endif
-}
-
-void __init pre_setup_arch_hook()
-{
-	visws_get_board_type_and_rev();
-}
-
-static struct irqaction irq0 = {
-	.handler =	timer_interrupt,
-	.flags =	IRQF_DISABLED | IRQF_IRQPOLL,
-	.name =		"timer",
-};
-
-void __init time_init_hook(void)
-{
-	printk(KERN_INFO "Starting Cobalt Timer system clock\n");
-
-	/* Set the countdown value */
-	co_cpu_write(CO_CPU_TIMEVAL, CO_TIME_HZ/HZ);
-
-	/* Start the timer */
-	co_cpu_write(CO_CPU_CTRL, co_cpu_read(CO_CPU_CTRL) | CO_CTRL_TIMERUN);
-
-	/* Enable (unmask) the timer interrupt */
-	co_cpu_write(CO_CPU_CTRL, co_cpu_read(CO_CPU_CTRL) & ~CO_CTRL_TIMEMASK);
-
-	/* Wire cpu IDT entry to s/w handler (and Cobalt APIC to IDT) */
-	setup_irq(0, &irq0);
-}
-
-/* Hook for machine specific memory setup. */
-
-#define MB (1024 * 1024)
-
-unsigned long sgivwfb_mem_phys;
-unsigned long sgivwfb_mem_size;
-EXPORT_SYMBOL(sgivwfb_mem_phys);
-EXPORT_SYMBOL(sgivwfb_mem_size);
-
-long long mem_size __initdata = 0;
-
-char * __init machine_specific_memory_setup(void)
-{
-	long long gfx_mem_size = 8 * MB;
-
-	mem_size = ALT_MEM_K;
-
-	if (!mem_size) {
-		printk(KERN_WARNING "Bootloader didn't set memory size, upgrade it !\n");
-		mem_size = 128 * MB;
-	}
-
-	/*
-	 * this hardcodes the graphics memory to 8 MB
-	 * it really should be sized dynamically (or at least
-	 * set as a boot param)
-	 */
-	if (!sgivwfb_mem_size) {
-		printk(KERN_WARNING "Defaulting to 8 MB framebuffer size\n");
-		sgivwfb_mem_size = 8 * MB;
-	}
-
-	/*
-	 * Trim to nearest MB
-	 */
-	sgivwfb_mem_size &= ~((1 << 20) - 1);
-	sgivwfb_mem_phys = mem_size - gfx_mem_size;
-
-	add_memory_region(0, LOWMEMSIZE(), E820_RAM);
-	add_memory_region(HIGH_MEMORY, mem_size - sgivwfb_mem_size - HIGH_MEMORY, E820_RAM);
-	add_memory_region(sgivwfb_mem_phys, sgivwfb_mem_size, E820_RESERVED);
-
-	return "PROM";
-}
diff --git a/arch/i386/mach-visws/traps.c b/arch/i386/mach-visws/traps.c
deleted file mode 100644
index 843b67acf43..00000000000
--- a/arch/i386/mach-visws/traps.c
+++ /dev/null
@@ -1,68 +0,0 @@
-/* VISWS traps */
-
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/pci.h>
-#include <linux/pci_ids.h>
-
-#include <asm/io.h>
-#include <asm/arch_hooks.h>
-#include <asm/apic.h>
-#include "cobalt.h"
-#include "lithium.h"
-
-
-#define A01234 (LI_INTA_0 | LI_INTA_1 | LI_INTA_2 | LI_INTA_3 | LI_INTA_4)
-#define BCD (LI_INTB | LI_INTC | LI_INTD)
-#define ALLDEVS (A01234 | BCD)
-
-static __init void lithium_init(void)
-{
-	set_fixmap(FIX_LI_PCIA, LI_PCI_A_PHYS);
-	set_fixmap(FIX_LI_PCIB, LI_PCI_B_PHYS);
-
-	if ((li_pcia_read16(PCI_VENDOR_ID) != PCI_VENDOR_ID_SGI) ||
-	    (li_pcia_read16(PCI_DEVICE_ID) != PCI_DEVICE_ID_SGI_LITHIUM)) {
-		printk(KERN_EMERG "Lithium hostbridge %c not found\n", 'A');
-		panic("This machine is not SGI Visual Workstation 320/540");
-	}
-
-	if ((li_pcib_read16(PCI_VENDOR_ID) != PCI_VENDOR_ID_SGI) ||
-	    (li_pcib_read16(PCI_DEVICE_ID) != PCI_DEVICE_ID_SGI_LITHIUM)) {
-		printk(KERN_EMERG "Lithium hostbridge %c not found\n", 'B');
-		panic("This machine is not SGI Visual Workstation 320/540");
-	}
-
-	li_pcia_write16(LI_PCI_INTEN, ALLDEVS);
-	li_pcib_write16(LI_PCI_INTEN, ALLDEVS);
-}
-
-static __init void cobalt_init(void)
-{
-	/*
-	 * On normal SMP PC this is used only with SMP, but we have to
-	 * use it and set it up here to start the Cobalt clock
-	 */
-	set_fixmap(FIX_APIC_BASE, APIC_DEFAULT_PHYS_BASE);
-	setup_local_APIC();
-	printk(KERN_INFO "Local APIC Version %#lx, ID %#lx\n",
-		apic_read(APIC_LVR), apic_read(APIC_ID));
-
-	set_fixmap(FIX_CO_CPU, CO_CPU_PHYS);
-	set_fixmap(FIX_CO_APIC, CO_APIC_PHYS);
-	printk(KERN_INFO "Cobalt Revision %#lx, APIC ID %#lx\n",
-		co_cpu_read(CO_CPU_REV), co_apic_read(CO_APIC_ID));
-
-	/* Enable Cobalt APIC being careful to NOT change the ID! */
-	co_apic_write(CO_APIC_ID, co_apic_read(CO_APIC_ID) | CO_APIC_ENABLE);
-
-	printk(KERN_INFO "Cobalt APIC enabled: ID reg %#lx\n",
-		co_apic_read(CO_APIC_ID));
-}
-
-void __init trap_init_hook(void)
-{
-	lithium_init();
-	cobalt_init();
-}
diff --git a/arch/i386/mach-visws/visws_apic.c b/arch/i386/mach-visws/visws_apic.c
deleted file mode 100644
index 710faf71a65..00000000000
--- a/arch/i386/mach-visws/visws_apic.c
+++ /dev/null
@@ -1,299 +0,0 @@
-/*
- *	linux/arch/i386/mach-visws/visws_apic.c
- *
- *	Copyright (C) 1999 Bent Hagemark, Ingo Molnar
- *
- *  SGI Visual Workstation interrupt controller
- *
- *  The Cobalt system ASIC in the Visual Workstation contains a "Cobalt" APIC
- *  which serves as the main interrupt controller in the system.  Non-legacy
- *  hardware in the system uses this controller directly.  Legacy devices
- *  are connected to the PIIX4 which in turn has its 8259(s) connected to
- *  a of the Cobalt APIC entry.
- *
- *  09/02/2000 - Updated for 2.4 by jbarnes@sgi.com
- *
- *  25/11/2002 - Updated for 2.5 by Andrey Panin <pazke@orbita1.ru>
- */
-
-#include <linux/kernel_stat.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-
-#include <asm/io.h>
-#include <asm/apic.h>
-#include <asm/i8259.h>
-
-#include "cobalt.h"
-#include "irq_vectors.h"
-
-
-static DEFINE_SPINLOCK(cobalt_lock);
-
-/*
- * Set the given Cobalt APIC Redirection Table entry to point
- * to the given IDT vector/index.
- */
-static inline void co_apic_set(int entry, int irq)
-{
-	co_apic_write(CO_APIC_LO(entry), CO_APIC_LEVEL | (irq + FIRST_EXTERNAL_VECTOR));
-	co_apic_write(CO_APIC_HI(entry), 0);
-}
-
-/*
- * Cobalt (IO)-APIC functions to handle PCI devices.
- */
-static inline int co_apic_ide0_hack(void)
-{
-	extern char visws_board_type;
-	extern char visws_board_rev;
-
-	if (visws_board_type == VISWS_320 && visws_board_rev == 5)
-		return 5;
-	return CO_APIC_IDE0;
-}
-
-static int is_co_apic(unsigned int irq)
-{
-	if (IS_CO_APIC(irq))
-		return CO_APIC(irq);
-
-	switch (irq) {
-		case 0: return CO_APIC_CPU;
-		case CO_IRQ_IDE0: return co_apic_ide0_hack();
-		case CO_IRQ_IDE1: return CO_APIC_IDE1;
-		default: return -1;
-	}
-}
-
-
-/*
- * This is the SGI Cobalt (IO-)APIC:
- */
-
-static void enable_cobalt_irq(unsigned int irq)
-{
-	co_apic_set(is_co_apic(irq), irq);
-}
-
-static void disable_cobalt_irq(unsigned int irq)
-{
-	int entry = is_co_apic(irq);
-
-	co_apic_write(CO_APIC_LO(entry), CO_APIC_MASK);
-	co_apic_read(CO_APIC_LO(entry));
-}
-
-/*
- * "irq" really just serves to identify the device.  Here is where we
- * map this to the Cobalt APIC entry where it's physically wired.
- * This is called via request_irq -> setup_irq -> irq_desc->startup()
- */
-static unsigned int startup_cobalt_irq(unsigned int irq)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&cobalt_lock, flags);
-	if ((irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS | IRQ_WAITING)))
-		irq_desc[irq].status &= ~(IRQ_DISABLED | IRQ_INPROGRESS | IRQ_WAITING);
-	enable_cobalt_irq(irq);
-	spin_unlock_irqrestore(&cobalt_lock, flags);
-	return 0;
-}
-
-static void ack_cobalt_irq(unsigned int irq)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&cobalt_lock, flags);
-	disable_cobalt_irq(irq);
-	apic_write(APIC_EOI, APIC_EIO_ACK);
-	spin_unlock_irqrestore(&cobalt_lock, flags);
-}
-
-static void end_cobalt_irq(unsigned int irq)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&cobalt_lock, flags);
-	if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
-		enable_cobalt_irq(irq);
-	spin_unlock_irqrestore(&cobalt_lock, flags);
-}
-
-static struct irq_chip cobalt_irq_type = {
-	.typename =	"Cobalt-APIC",
-	.startup =	startup_cobalt_irq,
-	.shutdown =	disable_cobalt_irq,
-	.enable =	enable_cobalt_irq,
-	.disable =	disable_cobalt_irq,
-	.ack =		ack_cobalt_irq,
-	.end =		end_cobalt_irq,
-};
-
-
-/*
- * This is the PIIX4-based 8259 that is wired up indirectly to Cobalt
- * -- not the manner expected by the code in i8259.c.
- *
- * there is a 'master' physical interrupt source that gets sent to
- * the CPU. But in the chipset there are various 'virtual' interrupts
- * waiting to be handled. We represent this to Linux through a 'master'
- * interrupt controller type, and through a special virtual interrupt-
- * controller. Device drivers only see the virtual interrupt sources.
- */
-static unsigned int startup_piix4_master_irq(unsigned int irq)
-{
-	init_8259A(0);
-
-	return startup_cobalt_irq(irq);
-}
-
-static void end_piix4_master_irq(unsigned int irq)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&cobalt_lock, flags);
-	enable_cobalt_irq(irq);
-	spin_unlock_irqrestore(&cobalt_lock, flags);
-}
-
-static struct irq_chip piix4_master_irq_type = {
-	.typename =	"PIIX4-master",
-	.startup =	startup_piix4_master_irq,
-	.ack =		ack_cobalt_irq,
-	.end =		end_piix4_master_irq,
-};
-
-
-static struct irq_chip piix4_virtual_irq_type = {
-	.typename =	"PIIX4-virtual",
-	.shutdown =	disable_8259A_irq,
-	.enable =	enable_8259A_irq,
-	.disable =	disable_8259A_irq,
-};
-
-
-/*
- * PIIX4-8259 master/virtual functions to handle interrupt requests
- * from legacy devices: floppy, parallel, serial, rtc.
- *
- * None of these get Cobalt APIC entries, neither do they have IDT
- * entries. These interrupts are purely virtual and distributed from
- * the 'master' interrupt source: CO_IRQ_8259.
- *
- * When the 8259 interrupts its handler figures out which of these
- * devices is interrupting and dispatches to its handler.
- *
- * CAREFUL: devices see the 'virtual' interrupt only. Thus disable/
- * enable_irq gets the right irq. This 'master' irq is never directly
- * manipulated by any driver.
- */
-static irqreturn_t piix4_master_intr(int irq, void *dev_id)
-{
-	int realirq;
-	irq_desc_t *desc;
-	unsigned long flags;
-
-	spin_lock_irqsave(&i8259A_lock, flags);
-
-	/* Find out what's interrupting in the PIIX4 master 8259 */
-	outb(0x0c, 0x20);		/* OCW3 Poll command */
-	realirq = inb(0x20);
-
-	/*
-	 * Bit 7 == 0 means invalid/spurious
-	 */
-	if (unlikely(!(realirq & 0x80)))
-		goto out_unlock;
-
-	realirq &= 7;
-
-	if (unlikely(realirq == 2)) {
-		outb(0x0c, 0xa0);
-		realirq = inb(0xa0);
-
-		if (unlikely(!(realirq & 0x80)))
-			goto out_unlock;
-
-		realirq = (realirq & 7) + 8;
-	}
-
-	/* mask and ack interrupt */
-	cached_irq_mask |= 1 << realirq;
-	if (unlikely(realirq > 7)) {
-		inb(0xa1);
-		outb(cached_slave_mask, 0xa1);
-		outb(0x60 + (realirq & 7), 0xa0);
-		outb(0x60 + 2, 0x20);
-	} else {
-		inb(0x21);
-		outb(cached_master_mask, 0x21);
-		outb(0x60 + realirq, 0x20);
-	}
-
-	spin_unlock_irqrestore(&i8259A_lock, flags);
-
-	desc = irq_desc + realirq;
-
-	/*
-	 * handle this 'virtual interrupt' as a Cobalt one now.
-	 */
-	kstat_cpu(smp_processor_id()).irqs[realirq]++;
-
-	if (likely(desc->action != NULL))
-		handle_IRQ_event(realirq, desc->action);
-
-	if (!(desc->status & IRQ_DISABLED))
-		enable_8259A_irq(realirq);
-
-	return IRQ_HANDLED;
-
-out_unlock:
-	spin_unlock_irqrestore(&i8259A_lock, flags);
-	return IRQ_NONE;
-}
-
-static struct irqaction master_action = {
-	.handler =	piix4_master_intr,
-	.name =		"PIIX4-8259",
-};
-
-static struct irqaction cascade_action = {
-	.handler = 	no_action,
-	.name =		"cascade",
-};
-
-
-void init_VISWS_APIC_irqs(void)
-{
-	int i;
-
-	for (i = 0; i < CO_IRQ_APIC0 + CO_APIC_LAST + 1; i++) {
-		irq_desc[i].status = IRQ_DISABLED;
-		irq_desc[i].action = 0;
-		irq_desc[i].depth = 1;
-
-		if (i == 0) {
-			irq_desc[i].chip = &cobalt_irq_type;
-		}
-		else if (i == CO_IRQ_IDE0) {
-			irq_desc[i].chip = &cobalt_irq_type;
-		}
-		else if (i == CO_IRQ_IDE1) {
-			irq_desc[i].chip = &cobalt_irq_type;
-		}
-		else if (i == CO_IRQ_8259) {
-			irq_desc[i].chip = &piix4_master_irq_type;
-		}
-		else if (i < CO_IRQ_APIC0) {
-			irq_desc[i].chip = &piix4_virtual_irq_type;
-		}
-		else if (IS_CO_APIC(i)) {
-			irq_desc[i].chip = &cobalt_irq_type;
-		}
-	}
-
-	setup_irq(CO_IRQ_8259, &master_action);
-	setup_irq(2, &cascade_action);
-}