ia64: remove support for the SGI SN2 platform

The SGI SN2 (early Altix) is a very non-standard IA64 platform that was
at the very high end of even IA64 hardware, and has been discontinued
a long time ago.  Remove it because there no upstream users left, and it
has magic hooks all over the kernel.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lkml.kernel.org/r/20190813072514.23299-16-hch@lst.de
Signed-off-by: Tony Luck <tony.luck@intel.com>

10 files changed, 0 insertions, 2225 deletions

diff --git a/arch/ia64/sn/kernel/sn2/Makefile b/arch/ia64/sn/kernel/sn2/Makefile
deleted file mode 100644
index 170bde4549da..000000000000
--- a/arch/ia64/sn/kernel/sn2/Makefile
+++ /dev/null
@@ -1,13 +0,0 @@
-# arch/ia64/sn/kernel/sn2/Makefile
-#
-# This file is subject to the terms and conditions of the GNU General Public
-# License.  See the file "COPYING" in the main directory of this archive
-# for more details.
-#
-# Copyright (C) 1999,2001-2002 Silicon Graphics, Inc. All rights reserved.
-#
-# sn2 specific kernel files
-#
-
-obj-y += cache.o io.o ptc_deadlock.o sn2_smp.o sn_proc_fs.o \
-	 prominfo_proc.o timer.o timer_interrupt.o sn_hwperf.o
diff --git a/arch/ia64/sn/kernel/sn2/cache.c b/arch/ia64/sn/kernel/sn2/cache.c
deleted file mode 100644
index 2862cb33026d..000000000000
--- a/arch/ia64/sn/kernel/sn2/cache.c
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- * 
- * Copyright (C) 2001-2003, 2006 Silicon Graphics, Inc. All rights reserved.
- *
- */
-#include <linux/module.h>
-#include <asm/pgalloc.h>
-#include <asm/sn/arch.h>
-
-/**
- * sn_flush_all_caches - flush a range of address from all caches (incl. L4)
- * @flush_addr: identity mapped region 7 address to start flushing
- * @bytes: number of bytes to flush
- *
- * Flush a range of addresses from all caches including L4. 
- * All addresses fully or partially contained within 
- * @flush_addr to @flush_addr + @bytes are flushed
- * from all caches.
- */
-void
-sn_flush_all_caches(long flush_addr, long bytes)
-{
-	unsigned long addr = flush_addr;
-
-	/* SHub1 requires a cached address */
-	if (is_shub1() && (addr & RGN_BITS) == RGN_BASE(RGN_UNCACHED))
-		addr = (addr - RGN_BASE(RGN_UNCACHED)) + RGN_BASE(RGN_KERNEL);
-
-	flush_icache_range(addr, addr + bytes);
-	/*
-	 * The last call may have returned before the caches
-	 * were actually flushed, so we call it again to make
-	 * sure.
-	 */
-	flush_icache_range(addr, addr + bytes);
-	mb();
-}
-EXPORT_SYMBOL(sn_flush_all_caches);
diff --git a/arch/ia64/sn/kernel/sn2/io.c b/arch/ia64/sn/kernel/sn2/io.c
deleted file mode 100644
index a12c0586de38..000000000000
--- a/arch/ia64/sn/kernel/sn2/io.c
+++ /dev/null
@@ -1,101 +0,0 @@
-/* 
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2003 Silicon Graphics, Inc. All rights reserved.
- *
- * The generic kernel requires function pointers to these routines, so
- * we wrap the inlines from asm/ia64/sn/sn2/io.h here.
- */
-
-#include <asm/sn/io.h>
-
-#ifdef CONFIG_IA64_GENERIC
-
-#undef __sn_inb
-#undef __sn_inw
-#undef __sn_inl
-#undef __sn_outb
-#undef __sn_outw
-#undef __sn_outl
-#undef __sn_readb
-#undef __sn_readw
-#undef __sn_readl
-#undef __sn_readq
-#undef __sn_readb_relaxed
-#undef __sn_readw_relaxed
-#undef __sn_readl_relaxed
-#undef __sn_readq_relaxed
-
-unsigned int __sn_inb(unsigned long port)
-{
-	return ___sn_inb(port);
-}
-
-unsigned int __sn_inw(unsigned long port)
-{
-	return ___sn_inw(port);
-}
-
-unsigned int __sn_inl(unsigned long port)
-{
-	return ___sn_inl(port);
-}
-
-void __sn_outb(unsigned char val, unsigned long port)
-{
-	___sn_outb(val, port);
-}
-
-void __sn_outw(unsigned short val, unsigned long port)
-{
-	___sn_outw(val, port);
-}
-
-void __sn_outl(unsigned int val, unsigned long port)
-{
-	___sn_outl(val, port);
-}
-
-unsigned char __sn_readb(void __iomem *addr)
-{
-	return ___sn_readb(addr);
-}
-
-unsigned short __sn_readw(void __iomem *addr)
-{
-	return ___sn_readw(addr);
-}
-
-unsigned int __sn_readl(void __iomem *addr)
-{
-	return ___sn_readl(addr);
-}
-
-unsigned long __sn_readq(void __iomem *addr)
-{
-	return ___sn_readq(addr);
-}
-
-unsigned char __sn_readb_relaxed(void __iomem *addr)
-{
-	return ___sn_readb_relaxed(addr);
-}
-
-unsigned short __sn_readw_relaxed(void __iomem *addr)
-{
-	return ___sn_readw_relaxed(addr);
-}
-
-unsigned int __sn_readl_relaxed(void __iomem *addr)
-{
-	return ___sn_readl_relaxed(addr);
-}
-
-unsigned long __sn_readq_relaxed(void __iomem *addr)
-{
-	return ___sn_readq_relaxed(addr);
-}
-
-#endif
diff --git a/arch/ia64/sn/kernel/sn2/prominfo_proc.c b/arch/ia64/sn/kernel/sn2/prominfo_proc.c
deleted file mode 100644
index e15457bf21ac..000000000000
--- a/arch/ia64/sn/kernel/sn2/prominfo_proc.c
+++ /dev/null
@@ -1,207 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1999,2001-2004, 2006 Silicon Graphics, Inc.  All Rights Reserved.
- *
- * Module to export the system's Firmware Interface Tables, including
- * PROM revision numbers and banners, in /proc
- */
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include <linux/nodemask.h>
-#include <asm/io.h>
-#include <asm/sn/sn_sal.h>
-#include <asm/sn/sn_cpuid.h>
-#include <asm/sn/addrs.h>
-
-MODULE_DESCRIPTION("PROM version reporting for /proc");
-MODULE_AUTHOR("Chad Talbott");
-MODULE_LICENSE("GPL");
-
-/* Standard Intel FIT entry types */
-#define FIT_ENTRY_FIT_HEADER	0x00	/* FIT header entry */
-#define FIT_ENTRY_PAL_B		0x01	/* PAL_B entry */
-/* Entries 0x02 through 0x0D reserved by Intel */
-#define FIT_ENTRY_PAL_A_PROC	0x0E	/* Processor-specific PAL_A entry */
-#define FIT_ENTRY_PAL_A		0x0F	/* PAL_A entry, same as... */
-#define FIT_ENTRY_PAL_A_GEN	0x0F	/* ...Generic PAL_A entry */
-#define FIT_ENTRY_UNUSED	0x7F	/* Unused (reserved by Intel?) */
-/* OEM-defined entries range from 0x10 to 0x7E. */
-#define FIT_ENTRY_SAL_A		0x10	/* SAL_A entry */
-#define FIT_ENTRY_SAL_B		0x11	/* SAL_B entry */
-#define FIT_ENTRY_SALRUNTIME	0x12	/* SAL runtime entry */
-#define FIT_ENTRY_EFI		0x1F	/* EFI entry */
-#define FIT_ENTRY_FPSWA		0x20	/* embedded fpswa entry */
-#define FIT_ENTRY_VMLINUX	0x21	/* embedded vmlinux entry */
-
-#define FIT_MAJOR_SHIFT	(32 + 8)
-#define FIT_MAJOR_MASK	((1 << 8) - 1)
-#define FIT_MINOR_SHIFT	32
-#define FIT_MINOR_MASK	((1 << 8) - 1)
-
-#define FIT_MAJOR(q)	\
-	((unsigned) ((q) >> FIT_MAJOR_SHIFT) & FIT_MAJOR_MASK)
-#define FIT_MINOR(q)	\
-	((unsigned) ((q) >> FIT_MINOR_SHIFT) & FIT_MINOR_MASK)
-
-#define FIT_TYPE_SHIFT	(32 + 16)
-#define FIT_TYPE_MASK	((1 << 7) - 1)
-
-#define FIT_TYPE(q)	\
-	((unsigned) ((q) >> FIT_TYPE_SHIFT) & FIT_TYPE_MASK)
-
-struct fit_type_map_t {
-	unsigned char type;
-	const char *name;
-};
-
-static const struct fit_type_map_t fit_entry_types[] = {
-	{FIT_ENTRY_FIT_HEADER, "FIT Header"},
-	{FIT_ENTRY_PAL_A_GEN, "Generic PAL_A"},
-	{FIT_ENTRY_PAL_A_PROC, "Processor-specific PAL_A"},
-	{FIT_ENTRY_PAL_A, "PAL_A"},
-	{FIT_ENTRY_PAL_B, "PAL_B"},
-	{FIT_ENTRY_SAL_A, "SAL_A"},
-	{FIT_ENTRY_SAL_B, "SAL_B"},
-	{FIT_ENTRY_SALRUNTIME, "SAL runtime"},
-	{FIT_ENTRY_EFI, "EFI"},
-	{FIT_ENTRY_VMLINUX, "Embedded Linux"},
-	{FIT_ENTRY_FPSWA, "Embedded FPSWA"},
-	{FIT_ENTRY_UNUSED, "Unused"},
-	{0xff, "Error"},
-};
-
-static const char *fit_type_name(unsigned char type)
-{
-	struct fit_type_map_t const *mapp;
-
-	for (mapp = fit_entry_types; mapp->type != 0xff; mapp++)
-		if (type == mapp->type)
-			return mapp->name;
-
-	if ((type > FIT_ENTRY_PAL_A) && (type < FIT_ENTRY_UNUSED))
-		return "OEM type";
-	if ((type > FIT_ENTRY_PAL_B) && (type < FIT_ENTRY_PAL_A))
-		return "Reserved";
-
-	return "Unknown type";
-}
-
-static int
-get_fit_entry(unsigned long nasid, int index, unsigned long *fentry,
-	      char *banner, int banlen)
-{
-	return ia64_sn_get_fit_compt(nasid, index, fentry, banner, banlen);
-}
-
-
-/*
- * These two routines display the FIT table for each node.
- */
-static void dump_fit_entry(struct seq_file *m, unsigned long *fentry)
-{
-	unsigned type;
-
-	type = FIT_TYPE(fentry[1]);
-	seq_printf(m, "%02x %-25s %x.%02x %016lx %u\n",
-		   type,
-		   fit_type_name(type),
-		   FIT_MAJOR(fentry[1]), FIT_MINOR(fentry[1]),
-		   fentry[0],
-		   /* mult by sixteen to get size in bytes */
-		   (unsigned)(fentry[1] & 0xffffff) * 16);
-}
-
-
-/*
- * We assume that the fit table will be small enough that we can print
- * the whole thing into one page.  (This is true for our default 16kB
- * pages -- each entry is about 60 chars wide when printed.)  I read
- * somewhere that the maximum size of the FIT is 128 entries, so we're
- * OK except for 4kB pages (and no one is going to do that on SN
- * anyway).
- */
-static int proc_fit_show(struct seq_file *m, void *v)
-{
-	unsigned long nasid = (unsigned long)m->private;
-	unsigned long fentry[2];
-	int index;
-
-	for (index=0;;index++) {
-		BUG_ON(index * 60 > PAGE_SIZE);
-		if (get_fit_entry(nasid, index, fentry, NULL, 0))
-			break;
-		dump_fit_entry(m, fentry);
-	}
-	return 0;
-}
-
-static int proc_version_show(struct seq_file *m, void *v)
-{
-	unsigned long nasid = (unsigned long)m->private;
-	unsigned long fentry[2];
-	char banner[128];
-	int index;
-
-	for (index = 0; ; index++) {
-		if (get_fit_entry(nasid, index, fentry, banner,
-				  sizeof(banner)))
-			return 0;
-		if (FIT_TYPE(fentry[1]) == FIT_ENTRY_SAL_A)
-			break;
-	}
-
-	seq_printf(m, "%x.%02x\n", FIT_MAJOR(fentry[1]), FIT_MINOR(fentry[1]));
-
-	if (banner[0])
-		seq_printf(m, "%s\n", banner);
-	return 0;
-}
-
-/* module entry points */
-int __init prominfo_init(void);
-void __exit prominfo_exit(void);
-
-module_init(prominfo_init);
-module_exit(prominfo_exit);
-
-#define NODE_NAME_LEN 11
-
-int __init prominfo_init(void)
-{
-	struct proc_dir_entry *sgi_prominfo_entry;
-	cnodeid_t cnodeid;
-
-	if (!ia64_platform_is("sn2"))
-		return 0;
-
-	sgi_prominfo_entry = proc_mkdir("sgi_prominfo", NULL);
-	if (!sgi_prominfo_entry)
-		return -ENOMEM;
-
-	for_each_online_node(cnodeid) {
-		struct proc_dir_entry *dir;
-		unsigned long nasid;
-		char name[NODE_NAME_LEN];
-
-		sprintf(name, "node%d", cnodeid);
-		dir = proc_mkdir(name, sgi_prominfo_entry);
-		if (!dir)
-			continue;
-		nasid = cnodeid_to_nasid(cnodeid);
-		proc_create_single_data("fit", 0, dir, proc_fit_show, 
-				(void *)nasid);
-		proc_create_single_data("version", 0, dir, proc_version_show,
-				(void *)nasid);
-	}
-	return 0;
-}
-
-void __exit prominfo_exit(void)
-{
-	remove_proc_subtree("sgi_prominfo", NULL);
-}
diff --git a/arch/ia64/sn/kernel/sn2/ptc_deadlock.S b/arch/ia64/sn/kernel/sn2/ptc_deadlock.S
deleted file mode 100644
index bebbcc4f8dd4..000000000000
--- a/arch/ia64/sn/kernel/sn2/ptc_deadlock.S
+++ /dev/null
@@ -1,92 +0,0 @@
-/* 
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2000-2005 Silicon Graphics, Inc. All rights reserved.
- */
-
-#include <asm/types.h>
-#include <asm/sn/shub_mmr.h>
-
-#define DEADLOCKBIT	SH_PIO_WRITE_STATUS_WRITE_DEADLOCK_SHFT
-#define WRITECOUNTMASK	SH_PIO_WRITE_STATUS_PENDING_WRITE_COUNT_MASK
-#define ALIAS_OFFSET	8
-
-
-	.global	sn2_ptc_deadlock_recovery_core
-	.proc  	sn2_ptc_deadlock_recovery_core
-
-sn2_ptc_deadlock_recovery_core:
-	.regstk 6,0,0,0
-
-	ptc0  	 = in0
-	data0 	 = in1
-	ptc1  	 = in2
-	data1 	 = in3
-	piowc 	 = in4
-	zeroval  = in5
-	piowcphy = r30
-	psrsave  = r2
-	scr1	 = r16
-	scr2	 = r17
-	mask	 = r18
-
-
-	extr.u	piowcphy=piowc,0,61;;	// Convert piowc to uncached physical address
-	dep	piowcphy=-1,piowcphy,63,1
-	movl	mask=WRITECOUNTMASK
-	mov	r8=r0
-
-1:
-	cmp.ne  p8,p9=r0,ptc1		// Test for shub type (ptc1 non-null on shub1)
-					// p8 = 1 if shub1, p9 = 1 if shub2
-
-	add	scr2=ALIAS_OFFSET,piowc	// Address of WRITE_STATUS alias register 
-	mov	scr1=7;;		// Clear DEADLOCK, WRITE_ERROR, MULTI_WRITE_ERROR
-(p8)	st8.rel	[scr2]=scr1;;
-(p9)	ld8.acq	scr1=[scr2];;
-
-5:	ld8.acq	scr1=[piowc];;		// Wait for PIOs to complete.
-	hint	@pause
-	and	scr2=scr1,mask;;	// mask of writecount bits
-	cmp.ne	p6,p0=zeroval,scr2
-(p6)	br.cond.sptk 5b
-	
-
-
-	////////////// BEGIN PHYSICAL MODE ////////////////////
-	mov psrsave=psr			// Disable IC (no PMIs)
-	rsm psr.i | psr.dt | psr.ic;;
-	srlz.i;;
-
-	st8.rel [ptc0]=data0		// Write PTC0 & wait for completion.
-
-5:	ld8.acq	scr1=[piowcphy];;	// Wait for PIOs to complete.
-	hint	@pause
-	and	scr2=scr1,mask;;	// mask of writecount bits
-	cmp.ne	p6,p0=zeroval,scr2
-(p6)	br.cond.sptk 5b;;
-
-	tbit.nz	p8,p7=scr1,DEADLOCKBIT;;// Test for DEADLOCK
-(p7)	cmp.ne p7,p0=r0,ptc1;;		// Test for non-null ptc1
-	
-(p7)	st8.rel [ptc1]=data1;;		// Now write PTC1.
-
-5:	ld8.acq	scr1=[piowcphy];;	// Wait for PIOs to complete.
-	hint	@pause
-	and	scr2=scr1,mask;;	// mask of writecount bits
-	cmp.ne	p6,p0=zeroval,scr2
-(p6)	br.cond.sptk 5b
-	
-	tbit.nz	p8,p0=scr1,DEADLOCKBIT;;// Test for DEADLOCK
-
-	mov psr.l=psrsave;;		// Reenable IC
-	srlz.i;;
-	////////////// END   PHYSICAL MODE ////////////////////
-
-(p8)	add	r8=1,r8
-(p8)	br.cond.spnt 1b;;		// Repeat if DEADLOCK occurred.
-
-	br.ret.sptk	rp
-	.endp sn2_ptc_deadlock_recovery_core
diff --git a/arch/ia64/sn/kernel/sn2/sn2_smp.c b/arch/ia64/sn/kernel/sn2/sn2_smp.c
deleted file mode 100644
index b510f4f17fd4..000000000000
--- a/arch/ia64/sn/kernel/sn2/sn2_smp.c
+++ /dev/null
@@ -1,577 +0,0 @@
-/*
- * SN2 Platform specific SMP Support
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2000-2006 Silicon Graphics, Inc. All rights reserved.
- */
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/spinlock.h>
-#include <linux/threads.h>
-#include <linux/sched.h>
-#include <linux/mm_types.h>
-#include <linux/smp.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/mmzone.h>
-#include <linux/module.h>
-#include <linux/bitops.h>
-#include <linux/nodemask.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-
-#include <asm/processor.h>
-#include <asm/irq.h>
-#include <asm/sal.h>
-#include <asm/delay.h>
-#include <asm/io.h>
-#include <asm/smp.h>
-#include <asm/tlb.h>
-#include <asm/numa.h>
-#include <asm/hw_irq.h>
-#include <asm/current.h>
-#include <asm/sn/sn_cpuid.h>
-#include <asm/sn/sn_sal.h>
-#include <asm/sn/addrs.h>
-#include <asm/sn/shub_mmr.h>
-#include <asm/sn/nodepda.h>
-#include <asm/sn/rw_mmr.h>
-#include <asm/sn/sn_feature_sets.h>
-
-DEFINE_PER_CPU(struct ptc_stats, ptcstats);
-DECLARE_PER_CPU(struct ptc_stats, ptcstats);
-
-static  __cacheline_aligned DEFINE_SPINLOCK(sn2_global_ptc_lock);
-
-/* 0 = old algorithm (no IPI flushes), 1 = ipi deadlock flush, 2 = ipi instead of SHUB ptc, >2 = always ipi */
-static int sn2_flush_opt = 0;
-
-extern unsigned long
-sn2_ptc_deadlock_recovery_core(volatile unsigned long *, unsigned long,
-			       volatile unsigned long *, unsigned long,
-			       volatile unsigned long *, unsigned long);
-void
-sn2_ptc_deadlock_recovery(nodemask_t, short, short, int,
-			  volatile unsigned long *, unsigned long,
-			  volatile unsigned long *, unsigned long);
-
-/*
- * Note: some is the following is captured here to make degugging easier
- * (the macros make more sense if you see the debug patch - not posted)
- */
-#define sn2_ptctest	0
-#define local_node_uses_ptc_ga(sh1)	((sh1) ? 1 : 0)
-#define max_active_pio(sh1)		((sh1) ? 32 : 7)
-#define reset_max_active_on_deadlock()	1
-#define PTC_LOCK(sh1)			((sh1) ? &sn2_global_ptc_lock : &sn_nodepda->ptc_lock)
-
-struct ptc_stats {
-	unsigned long ptc_l;
-	unsigned long change_rid;
-	unsigned long shub_ptc_flushes;
-	unsigned long nodes_flushed;
-	unsigned long deadlocks;
-	unsigned long deadlocks2;
-	unsigned long lock_itc_clocks;
-	unsigned long shub_itc_clocks;
-	unsigned long shub_itc_clocks_max;
-	unsigned long shub_ptc_flushes_not_my_mm;
-	unsigned long shub_ipi_flushes;
-	unsigned long shub_ipi_flushes_itc_clocks;
-};
-
-#define sn2_ptctest	0
-
-static inline unsigned long wait_piowc(void)
-{
-	volatile unsigned long *piows;
-	unsigned long zeroval, ws;
-
-	piows = pda->pio_write_status_addr;
-	zeroval = pda->pio_write_status_val;
-	do {
-		cpu_relax();
-	} while (((ws = *piows) & SH_PIO_WRITE_STATUS_PENDING_WRITE_COUNT_MASK) != zeroval);
-	return (ws & SH_PIO_WRITE_STATUS_WRITE_DEADLOCK_MASK) != 0;
-}
-
-/**
- * sn_migrate - SN-specific task migration actions
- * @task: Task being migrated to new CPU
- *
- * SN2 PIO writes from separate CPUs are not guaranteed to arrive in order.
- * Context switching user threads which have memory-mapped MMIO may cause
- * PIOs to issue from separate CPUs, thus the PIO writes must be drained
- * from the previous CPU's Shub before execution resumes on the new CPU.
- */
-void sn_migrate(struct task_struct *task)
-{
-	pda_t *last_pda = pdacpu(task_thread_info(task)->last_cpu);
-	volatile unsigned long *adr = last_pda->pio_write_status_addr;
-	unsigned long val = last_pda->pio_write_status_val;
-
-	/* Drain PIO writes from old CPU's Shub */
-	while (unlikely((*adr & SH_PIO_WRITE_STATUS_PENDING_WRITE_COUNT_MASK)
-			!= val))
-		cpu_relax();
-}
-
-static void
-sn2_ipi_flush_all_tlb(struct mm_struct *mm)
-{
-	unsigned long itc;
-
-	itc = ia64_get_itc();
-	smp_flush_tlb_cpumask(*mm_cpumask(mm));
-	itc = ia64_get_itc() - itc;
-	__this_cpu_add(ptcstats.shub_ipi_flushes_itc_clocks, itc);
-	__this_cpu_inc(ptcstats.shub_ipi_flushes);
-}
-
-/**
- * sn2_global_tlb_purge - globally purge translation cache of virtual address range
- * @mm: mm_struct containing virtual address range
- * @start: start of virtual address range
- * @end: end of virtual address range
- * @nbits: specifies number of bytes to purge per instruction (num = 1<<(nbits & 0xfc))
- *
- * Purges the translation caches of all processors of the given virtual address
- * range.
- *
- * Note:
- * 	- cpu_vm_mask is a bit mask that indicates which cpus have loaded the context.
- * 	- cpu_vm_mask is converted into a nodemask of the nodes containing the
- * 	  cpus in cpu_vm_mask.
- *	- if only one bit is set in cpu_vm_mask & it is the current cpu & the
- *	  process is purging its own virtual address range, then only the
- *	  local TLB needs to be flushed. This flushing can be done using
- *	  ptc.l. This is the common case & avoids the global spinlock.
- *	- if multiple cpus have loaded the context, then flushing has to be
- *	  done with ptc.g/MMRs under protection of the global ptc_lock.
- */
-
-void
-sn2_global_tlb_purge(struct mm_struct *mm, unsigned long start,
-		     unsigned long end, unsigned long nbits)
-{
-	int i, ibegin, shub1, cnode, mynasid, cpu, lcpu = 0, nasid;
-	int mymm = (mm == current->active_mm && mm == current->mm);
-	int use_cpu_ptcga;
-	volatile unsigned long *ptc0, *ptc1;
-	unsigned long itc, itc2, flags, data0 = 0, data1 = 0, rr_value, old_rr = 0;
-	short nix;
-	nodemask_t nodes_flushed;
-	int active, max_active, deadlock, flush_opt = sn2_flush_opt;
-
-	if (flush_opt > 2) {
-		sn2_ipi_flush_all_tlb(mm);
-		return;
-	}
-
-	nodes_clear(nodes_flushed);
-	i = 0;
-
-	for_each_cpu(cpu, mm_cpumask(mm)) {
-		cnode = cpu_to_node(cpu);
-		node_set(cnode, nodes_flushed);
-		lcpu = cpu;
-		i++;
-	}
-
-	if (i == 0)
-		return;
-
-	preempt_disable();
-
-	if (likely(i == 1 && lcpu == smp_processor_id() && mymm)) {
-		do {
-			ia64_ptcl(start, nbits << 2);
-			start += (1UL << nbits);
-		} while (start < end);
-		ia64_srlz_i();
-		__this_cpu_inc(ptcstats.ptc_l);
-		preempt_enable();
-		return;
-	}
-
-	if (atomic_read(&mm->mm_users) == 1 && mymm) {
-		flush_tlb_mm(mm);
-		__this_cpu_inc(ptcstats.change_rid);
-		preempt_enable();
-		return;
-	}
-
-	if (flush_opt == 2) {
-		sn2_ipi_flush_all_tlb(mm);
-		preempt_enable();
-		return;
-	}
-
-	itc = ia64_get_itc();
-	nix = nodes_weight(nodes_flushed);
-
-	rr_value = (mm->context << 3) | REGION_NUMBER(start);
-
-	shub1 = is_shub1();
-	if (shub1) {
-		data0 = (1UL << SH1_PTC_0_A_SHFT) |
-		    	(nbits << SH1_PTC_0_PS_SHFT) |
-			(rr_value << SH1_PTC_0_RID_SHFT) |
-		    	(1UL << SH1_PTC_0_START_SHFT);
-		ptc0 = (long *)GLOBAL_MMR_PHYS_ADDR(0, SH1_PTC_0);
-		ptc1 = (long *)GLOBAL_MMR_PHYS_ADDR(0, SH1_PTC_1);
-	} else {
-		data0 = (1UL << SH2_PTC_A_SHFT) |
-			(nbits << SH2_PTC_PS_SHFT) |
-		    	(1UL << SH2_PTC_START_SHFT);
-		ptc0 = (long *)GLOBAL_MMR_PHYS_ADDR(0, SH2_PTC + 
-			(rr_value << SH2_PTC_RID_SHFT));
-		ptc1 = NULL;
-	}
-	
-
-	mynasid = get_nasid();
-	use_cpu_ptcga = local_node_uses_ptc_ga(shub1);
-	max_active = max_active_pio(shub1);
-
-	itc = ia64_get_itc();
-	spin_lock_irqsave(PTC_LOCK(shub1), flags);
-	itc2 = ia64_get_itc();
-
-	__this_cpu_add(ptcstats.lock_itc_clocks, itc2 - itc);
-	__this_cpu_inc(ptcstats.shub_ptc_flushes);
-	__this_cpu_add(ptcstats.nodes_flushed, nix);
-	if (!mymm)
-		 __this_cpu_inc(ptcstats.shub_ptc_flushes_not_my_mm);
-
-	if (use_cpu_ptcga && !mymm) {
-		old_rr = ia64_get_rr(start);
-		ia64_set_rr(start, (old_rr & 0xff) | (rr_value << 8));
-		ia64_srlz_d();
-	}
-
-	wait_piowc();
-	do {
-		if (shub1)
-			data1 = start | (1UL << SH1_PTC_1_START_SHFT);
-		else
-			data0 = (data0 & ~SH2_PTC_ADDR_MASK) | (start & SH2_PTC_ADDR_MASK);
-		deadlock = 0;
-		active = 0;
-		ibegin = 0;
-		i = 0;
-		for_each_node_mask(cnode, nodes_flushed) {
-			nasid = cnodeid_to_nasid(cnode);
-			if (use_cpu_ptcga && unlikely(nasid == mynasid)) {
-				ia64_ptcga(start, nbits << 2);
-				ia64_srlz_i();
-			} else {
-				ptc0 = CHANGE_NASID(nasid, ptc0);
-				if (ptc1)
-					ptc1 = CHANGE_NASID(nasid, ptc1);
-				pio_atomic_phys_write_mmrs(ptc0, data0, ptc1, data1);
-				active++;
-			}
-			if (active >= max_active || i == (nix - 1)) {
-				if ((deadlock = wait_piowc())) {
-					if (flush_opt == 1)
-						goto done;
-					sn2_ptc_deadlock_recovery(nodes_flushed, ibegin, i, mynasid, ptc0, data0, ptc1, data1);
-					if (reset_max_active_on_deadlock())
-						max_active = 1;
-				}
-				active = 0;
-				ibegin = i + 1;
-			}
-			i++;
-		}
-		start += (1UL << nbits);
-	} while (start < end);
-
-done:
-	itc2 = ia64_get_itc() - itc2;
-	__this_cpu_add(ptcstats.shub_itc_clocks, itc2);
-	if (itc2 > __this_cpu_read(ptcstats.shub_itc_clocks_max))
-		__this_cpu_write(ptcstats.shub_itc_clocks_max, itc2);
-
-	if (old_rr) {
-		ia64_set_rr(start, old_rr);
-		ia64_srlz_d();
-	}
-
-	spin_unlock_irqrestore(PTC_LOCK(shub1), flags);
-
-	if (flush_opt == 1 && deadlock) {
-		__this_cpu_inc(ptcstats.deadlocks);
-		sn2_ipi_flush_all_tlb(mm);
-	}
-
-	preempt_enable();
-}
-
-/*
- * sn2_ptc_deadlock_recovery
- *
- * Recover from PTC deadlocks conditions. Recovery requires stepping thru each 
- * TLB flush transaction.  The recovery sequence is somewhat tricky & is
- * coded in assembly language.
- */
-
-void
-sn2_ptc_deadlock_recovery(nodemask_t nodes, short ib, short ie, int mynasid,
-			  volatile unsigned long *ptc0, unsigned long data0,
-			  volatile unsigned long *ptc1, unsigned long data1)
-{
-	short nasid, i;
-	int cnode;
-	unsigned long *piows, zeroval, n;
-
-	__this_cpu_inc(ptcstats.deadlocks);
-
-	piows = (unsigned long *) pda->pio_write_status_addr;
-	zeroval = pda->pio_write_status_val;
-
-	i = 0;
-	for_each_node_mask(cnode, nodes) {
-		if (i < ib)
-			goto next;
-
-		if (i > ie)
-			break;
-
-		nasid = cnodeid_to_nasid(cnode);
-		if (local_node_uses_ptc_ga(is_shub1()) && nasid == mynasid)
-			goto next;
-
-		ptc0 = CHANGE_NASID(nasid, ptc0);
-		if (ptc1)
-			ptc1 = CHANGE_NASID(nasid, ptc1);
-
-		n = sn2_ptc_deadlock_recovery_core(ptc0, data0, ptc1, data1, piows, zeroval);
-		__this_cpu_add(ptcstats.deadlocks2, n);
-next:
-		i++;
-	}
-
-}
-
-/**
- * sn_send_IPI_phys - send an IPI to a Nasid and slice
- * @nasid: nasid to receive the interrupt (may be outside partition)
- * @physid: physical cpuid to receive the interrupt.
- * @vector: command to send
- * @delivery_mode: delivery mechanism
- *
- * Sends an IPI (interprocessor interrupt) to the processor specified by
- * @physid
- *
- * @delivery_mode can be one of the following
- *
- * %IA64_IPI_DM_INT - pend an interrupt
- * %IA64_IPI_DM_PMI - pend a PMI
- * %IA64_IPI_DM_NMI - pend an NMI
- * %IA64_IPI_DM_INIT - pend an INIT interrupt
- */
-void sn_send_IPI_phys(int nasid, long physid, int vector, int delivery_mode)
-{
-	long val;
-	unsigned long flags = 0;
-	volatile long *p;
-
-	p = (long *)GLOBAL_MMR_PHYS_ADDR(nasid, SH_IPI_INT);
-	val = (1UL << SH_IPI_INT_SEND_SHFT) |
-	    (physid << SH_IPI_INT_PID_SHFT) |
-	    ((long)delivery_mode << SH_IPI_INT_TYPE_SHFT) |
-	    ((long)vector << SH_IPI_INT_IDX_SHFT) |
-	    (0x000feeUL << SH_IPI_INT_BASE_SHFT);
-
-	mb();
-	if (enable_shub_wars_1_1()) {
-		spin_lock_irqsave(&sn2_global_ptc_lock, flags);
-	}
-	pio_phys_write_mmr(p, val);
-	if (enable_shub_wars_1_1()) {
-		wait_piowc();
-		spin_unlock_irqrestore(&sn2_global_ptc_lock, flags);
-	}
-
-}
-
-EXPORT_SYMBOL(sn_send_IPI_phys);
-
-/**
- * sn2_send_IPI - send an IPI to a processor
- * @cpuid: target of the IPI
- * @vector: command to send
- * @delivery_mode: delivery mechanism
- * @redirect: redirect the IPI?
- *
- * Sends an IPI (InterProcessor Interrupt) to the processor specified by
- * @cpuid.  @vector specifies the command to send, while @delivery_mode can 
- * be one of the following
- *
- * %IA64_IPI_DM_INT - pend an interrupt
- * %IA64_IPI_DM_PMI - pend a PMI
- * %IA64_IPI_DM_NMI - pend an NMI
- * %IA64_IPI_DM_INIT - pend an INIT interrupt
- */
-void sn2_send_IPI(int cpuid, int vector, int delivery_mode, int redirect)
-{
-	long physid;
-	int nasid;
-
-	physid = cpu_physical_id(cpuid);
-	nasid = cpuid_to_nasid(cpuid);
-
-	/* the following is used only when starting cpus at boot time */
-	if (unlikely(nasid == -1))
-		ia64_sn_get_sapic_info(physid, &nasid, NULL, NULL);
-
-	sn_send_IPI_phys(nasid, physid, vector, delivery_mode);
-}
-
-#ifdef CONFIG_HOTPLUG_CPU
-/**
- * sn_cpu_disable_allowed - Determine if a CPU can be disabled.
- * @cpu - CPU that is requested to be disabled.
- *
- * CPU disable is only allowed on SHub2 systems running with a PROM
- * that supports CPU disable. It is not permitted to disable the boot processor.
- */
-bool sn_cpu_disable_allowed(int cpu)
-{
-	if (is_shub2() && sn_prom_feature_available(PRF_CPU_DISABLE_SUPPORT)) {
-		if (cpu != 0)
-			return true;
-		else
-			printk(KERN_WARNING
-			      "Disabling the boot processor is not allowed.\n");
-
-	} else
-		printk(KERN_WARNING
-		       "CPU disable is not supported on this system.\n");
-
-	return false;
-}
-#endif /* CONFIG_HOTPLUG_CPU */
-
-#ifdef CONFIG_PROC_FS
-
-#define PTC_BASENAME	"sgi_sn/ptc_statistics"
-
-static void *sn2_ptc_seq_start(struct seq_file *file, loff_t * offset)
-{
-	if (*offset < nr_cpu_ids)
-		return offset;
-	return NULL;
-}
-
-static void *sn2_ptc_seq_next(struct seq_file *file, void *data, loff_t * offset)
-{
-	(*offset)++;
-	if (*offset < nr_cpu_ids)
-		return offset;
-	return NULL;
-}
-
-static void sn2_ptc_seq_stop(struct seq_file *file, void *data)
-{
-}
-
-static int sn2_ptc_seq_show(struct seq_file *file, void *data)
-{
-	struct ptc_stats *stat;
-	int cpu;
-
-	cpu = *(loff_t *) data;
-
-	if (!cpu) {
-		seq_printf(file,
-			   "# cpu ptc_l newrid ptc_flushes nodes_flushed deadlocks lock_nsec shub_nsec shub_nsec_max not_my_mm deadlock2 ipi_fluches ipi_nsec\n");
-		seq_printf(file, "# ptctest %d, flushopt %d\n", sn2_ptctest, sn2_flush_opt);
-	}
-
-	if (cpu < nr_cpu_ids && cpu_online(cpu)) {
-		stat = &per_cpu(ptcstats, cpu);
-		seq_printf(file, "cpu %d %ld %ld %ld %ld %ld %ld %ld %ld %ld %ld %ld %ld\n", cpu, stat->ptc_l,
-				stat->change_rid, stat->shub_ptc_flushes, stat->nodes_flushed,
-				stat->deadlocks,
-				1000 * stat->lock_itc_clocks / per_cpu(ia64_cpu_info, cpu).cyc_per_usec,
-				1000 * stat->shub_itc_clocks / per_cpu(ia64_cpu_info, cpu).cyc_per_usec,
-				1000 * stat->shub_itc_clocks_max / per_cpu(ia64_cpu_info, cpu).cyc_per_usec,
-				stat->shub_ptc_flushes_not_my_mm,
-				stat->deadlocks2,
-				stat->shub_ipi_flushes,
-				1000 * stat->shub_ipi_flushes_itc_clocks / per_cpu(ia64_cpu_info, cpu).cyc_per_usec);
-	}
-	return 0;
-}
-
-static ssize_t sn2_ptc_proc_write(struct file *file, const char __user *user, size_t count, loff_t *data)
-{
-	int cpu;
-	char optstr[64];
-
-	if (count == 0 || count > sizeof(optstr))
-		return -EINVAL;
-	if (copy_from_user(optstr, user, count))
-		return -EFAULT;
-	optstr[count - 1] = '\0';
-	sn2_flush_opt = simple_strtoul(optstr, NULL, 0);
-
-	for_each_online_cpu(cpu)
-		memset(&per_cpu(ptcstats, cpu), 0, sizeof(struct ptc_stats));
-
-	return count;
-}
-
-static const struct seq_operations sn2_ptc_seq_ops = {
-	.start = sn2_ptc_seq_start,
-	.next = sn2_ptc_seq_next,
-	.stop = sn2_ptc_seq_stop,
-	.show = sn2_ptc_seq_show
-};
-
-static int sn2_ptc_proc_open(struct inode *inode, struct file *file)
-{
-	return seq_open(file, &sn2_ptc_seq_ops);
-}
-
-static const struct file_operations proc_sn2_ptc_operations = {
-	.open = sn2_ptc_proc_open,
-	.read = seq_read,
-	.write = sn2_ptc_proc_write,
-	.llseek = seq_lseek,
-	.release = seq_release,
-};
-
-static struct proc_dir_entry *proc_sn2_ptc;
-
-static int __init sn2_ptc_init(void)
-{
-	if (!ia64_platform_is("sn2"))
-		return 0;
-
-	proc_sn2_ptc = proc_create(PTC_BASENAME, 0444,
-				   NULL, &proc_sn2_ptc_operations);
-	if (!proc_sn2_ptc) {
-		printk(KERN_ERR "unable to create %s proc entry", PTC_BASENAME);
-		return -EINVAL;
-	}
-	spin_lock_init(&sn2_global_ptc_lock);
-	return 0;
-}
-
-static void __exit sn2_ptc_exit(void)
-{
-	remove_proc_entry(PTC_BASENAME, NULL);
-}
-
-module_init(sn2_ptc_init);
-module_exit(sn2_ptc_exit);
-#endif /* CONFIG_PROC_FS */
-
diff --git a/arch/ia64/sn/kernel/sn2/sn_hwperf.c b/arch/ia64/sn/kernel/sn2/sn_hwperf.c
deleted file mode 100644
index 55febd65911a..000000000000
--- a/arch/ia64/sn/kernel/sn2/sn_hwperf.c
+++ /dev/null
@@ -1,1004 +0,0 @@
-/* 
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2004-2006 Silicon Graphics, Inc. All rights reserved.
- *
- * SGI Altix topology and hardware performance monitoring API.
- * Mark Goodwin <markgw@sgi.com>. 
- *
- * Creates /proc/sgi_sn/sn_topology (read-only) to export
- * info about Altix nodes, routers, CPUs and NumaLink
- * interconnection/topology.
- *
- * Also creates a dynamic misc device named "sn_hwperf"
- * that supports an ioctl interface to call down into SAL
- * to discover hw objects, topology and to read/write
- * memory mapped registers, e.g. for performance monitoring.
- * The "sn_hwperf" device is registered only after the procfs
- * file is first opened, i.e. only if/when it's needed. 
- *
- * This API is used by SGI Performance Co-Pilot and other
- * tools, see http://oss.sgi.com/projects/pcp
- */
-
-#include <linux/fs.h>
-#include <linux/slab.h>
-#include <linux/export.h>
-#include <linux/vmalloc.h>
-#include <linux/seq_file.h>
-#include <linux/miscdevice.h>
-#include <linux/utsname.h>
-#include <linux/cpumask.h>
-#include <linux/nodemask.h>
-#include <linux/smp.h>
-#include <linux/mutex.h>
-
-#include <asm/processor.h>
-#include <asm/topology.h>
-#include <linux/uaccess.h>
-#include <asm/sal.h>
-#include <asm/sn/io.h>
-#include <asm/sn/sn_sal.h>
-#include <asm/sn/module.h>
-#include <asm/sn/geo.h>
-#include <asm/sn/sn2/sn_hwperf.h>
-#include <asm/sn/addrs.h>
-
-static void *sn_hwperf_salheap = NULL;
-static int sn_hwperf_obj_cnt = 0;
-static nasid_t sn_hwperf_master_nasid = INVALID_NASID;
-static int sn_hwperf_init(void);
-static DEFINE_MUTEX(sn_hwperf_init_mutex);
-
-#define cnode_possible(n)	((n) < num_cnodes)
-
-static int sn_hwperf_enum_objects(int *nobj, struct sn_hwperf_object_info **ret)
-{
-	int e;
-	u64 sz;
-	struct sn_hwperf_object_info *objbuf = NULL;
-
-	if ((e = sn_hwperf_init()) < 0) {
-		printk(KERN_ERR "sn_hwperf_init failed: err %d\n", e);
-		goto out;
-	}
-
-	sz = sn_hwperf_obj_cnt * sizeof(struct sn_hwperf_object_info);
-	objbuf = vmalloc(sz);
-	if (objbuf == NULL) {
-		printk("sn_hwperf_enum_objects: vmalloc(%d) failed\n", (int)sz);
-		e = -ENOMEM;
-		goto out;
-	}
-
-	e = ia64_sn_hwperf_op(sn_hwperf_master_nasid, SN_HWPERF_ENUM_OBJECTS,
-		0, sz, (u64) objbuf, 0, 0, NULL);
-	if (e != SN_HWPERF_OP_OK) {
-		e = -EINVAL;
-		vfree(objbuf);
-	}
-
-out:
-	*nobj = sn_hwperf_obj_cnt;
-	*ret = objbuf;
-	return e;
-}
-
-static int sn_hwperf_location_to_bpos(char *location,
-	int *rack, int *bay, int *slot, int *slab)
-{
-	char type;
-
-	/* first scan for an old style geoid string */
-	if (sscanf(location, "%03d%c%02d#%d",
-		rack, &type, bay, slab) == 4)
-		*slot = 0; 
-	else /* scan for a new bladed geoid string */
-	if (sscanf(location, "%03d%c%02d^%02d#%d",
-		rack, &type, bay, slot, slab) != 5)
-		return -1; 
-	/* success */
-	return 0;
-}
-
-static int sn_hwperf_geoid_to_cnode(char *location)
-{
-	int cnode;
-	geoid_t geoid;
-	moduleid_t module_id;
-	int rack, bay, slot, slab;
-	int this_rack, this_bay, this_slot, this_slab;
-
-	if (sn_hwperf_location_to_bpos(location, &rack, &bay, &slot, &slab))
-		return -1;
-
-	/*
-	 * FIXME: replace with cleaner for_each_XXX macro which addresses
-	 * both compute and IO nodes once ACPI3.0 is available.
-	 */
-	for (cnode = 0; cnode < num_cnodes; cnode++) {
-		geoid = cnodeid_get_geoid(cnode);
-		module_id = geo_module(geoid);
-		this_rack = MODULE_GET_RACK(module_id);
-		this_bay = MODULE_GET_BPOS(module_id);
-		this_slot = geo_slot(geoid);
-		this_slab = geo_slab(geoid);
-		if (rack == this_rack && bay == this_bay &&
-			slot == this_slot && slab == this_slab) {
-			break;
-		}
-	}
-
-	return cnode_possible(cnode) ? cnode : -1;
-}
-
-static int sn_hwperf_obj_to_cnode(struct sn_hwperf_object_info * obj)
-{
-	if (!SN_HWPERF_IS_NODE(obj) && !SN_HWPERF_IS_IONODE(obj))
-		BUG();
-	if (SN_HWPERF_FOREIGN(obj))
-		return -1;
-	return sn_hwperf_geoid_to_cnode(obj->location);
-}
-
-static int sn_hwperf_generic_ordinal(struct sn_hwperf_object_info *obj,
-				struct sn_hwperf_object_info *objs)
-{
-	int ordinal;
-	struct sn_hwperf_object_info *p;
-
-	for (ordinal=0, p=objs; p != obj; p++) {
-		if (SN_HWPERF_FOREIGN(p))
-			continue;
-		if (SN_HWPERF_SAME_OBJTYPE(p, obj))
-			ordinal++;
-	}
-
-	return ordinal;
-}
-
-static const char *slabname_node =	"node"; /* SHub asic */
-static const char *slabname_ionode =	"ionode"; /* TIO asic */
-static const char *slabname_router =	"router"; /* NL3R or NL4R */
-static const char *slabname_other =	"other"; /* unknown asic */
-
-static const char *sn_hwperf_get_slabname(struct sn_hwperf_object_info *obj,
-			struct sn_hwperf_object_info *objs, int *ordinal)
-{
-	int isnode;
-	const char *slabname = slabname_other;
-
-	if ((isnode = SN_HWPERF_IS_NODE(obj)) || SN_HWPERF_IS_IONODE(obj)) {
-	    	slabname = isnode ? slabname_node : slabname_ionode;
-		*ordinal = sn_hwperf_obj_to_cnode(obj);
-	}
-	else {
-		*ordinal = sn_hwperf_generic_ordinal(obj, objs);
-		if (SN_HWPERF_IS_ROUTER(obj))
-			slabname = slabname_router;
-	}
-
-	return slabname;
-}
-
-static void print_pci_topology(struct seq_file *s)
-{
-	char *p;
-	size_t sz;
-	int e;
-
-	for (sz = PAGE_SIZE; sz < 16 * PAGE_SIZE; sz += PAGE_SIZE) {
-		if (!(p = kmalloc(sz, GFP_KERNEL)))
-			break;
-		e = ia64_sn_ioif_get_pci_topology(__pa(p), sz);
-		if (e == SALRET_OK)
-			seq_puts(s, p);
-		kfree(p);
-		if (e == SALRET_OK || e == SALRET_NOT_IMPLEMENTED)
-			break;
-	}
-}
-
-static inline int sn_hwperf_has_cpus(cnodeid_t node)
-{
-	return node < MAX_NUMNODES && node_online(node) && nr_cpus_node(node);
-}
-
-static inline int sn_hwperf_has_mem(cnodeid_t node)
-{
-	return node < MAX_NUMNODES && node_online(node) && NODE_DATA(node)->node_present_pages;
-}
-
-static struct sn_hwperf_object_info *
-sn_hwperf_findobj_id(struct sn_hwperf_object_info *objbuf,
-	int nobj, int id)
-{
-	int i;
-	struct sn_hwperf_object_info *p = objbuf;
-
-	for (i=0; i < nobj; i++, p++) {
-		if (p->id == id)
-			return p;
-	}
-
-	return NULL;
-
-}
-
-static int sn_hwperf_get_nearest_node_objdata(struct sn_hwperf_object_info *objbuf,
-	int nobj, cnodeid_t node, cnodeid_t *near_mem_node, cnodeid_t *near_cpu_node)
-{
-	int e;
-	struct sn_hwperf_object_info *nodeobj = NULL;
-	struct sn_hwperf_object_info *op;
-	struct sn_hwperf_object_info *dest;
-	struct sn_hwperf_object_info *router;
-	struct sn_hwperf_port_info ptdata[16];
-	int sz, i, j;
-	cnodeid_t c;
-	int found_mem = 0;
-	int found_cpu = 0;
-
-	if (!cnode_possible(node))
-		return -EINVAL;
-
-	if (sn_hwperf_has_cpus(node)) {
-		if (near_cpu_node)
-			*near_cpu_node = node;
-		found_cpu++;
-	}
-
-	if (sn_hwperf_has_mem(node)) {
-		if (near_mem_node)
-			*near_mem_node = node;
-		found_mem++;
-	}
-
-	if (found_cpu && found_mem)
-		return 0; /* trivially successful */
-
-	/* find the argument node object */
-	for (i=0, op=objbuf; i < nobj; i++, op++) {
-		if (!SN_HWPERF_IS_NODE(op) && !SN_HWPERF_IS_IONODE(op))
-			continue;
-		if (node == sn_hwperf_obj_to_cnode(op)) {
-			nodeobj = op;
-			break;
-		}
-	}
-	if (!nodeobj) {
-		e = -ENOENT;
-		goto err;
-	}
-
-	/* get it's interconnect topology */
-	sz = op->ports * sizeof(struct sn_hwperf_port_info);
-	BUG_ON(sz > sizeof(ptdata));
-	e = ia64_sn_hwperf_op(sn_hwperf_master_nasid,
-			      SN_HWPERF_ENUM_PORTS, nodeobj->id, sz,
-			      (u64)&ptdata, 0, 0, NULL);
-	if (e != SN_HWPERF_OP_OK) {
-		e = -EINVAL;
-		goto err;
-	}
-
-	/* find nearest node with cpus and nearest memory */
-	for (router=NULL, j=0; j < op->ports; j++) {
-		dest = sn_hwperf_findobj_id(objbuf, nobj, ptdata[j].conn_id);
-		if (dest && SN_HWPERF_IS_ROUTER(dest))
-			router = dest;
-		if (!dest || SN_HWPERF_FOREIGN(dest) ||
-		    !SN_HWPERF_IS_NODE(dest) || SN_HWPERF_IS_IONODE(dest)) {
-			continue;
-		}
-		c = sn_hwperf_obj_to_cnode(dest);
-		if (!found_cpu && sn_hwperf_has_cpus(c)) {
-			if (near_cpu_node)
-				*near_cpu_node = c;
-			found_cpu++;
-		}
-		if (!found_mem && sn_hwperf_has_mem(c)) {
-			if (near_mem_node)
-				*near_mem_node = c;
-			found_mem++;
-		}
-	}
-
-	if (router && (!found_cpu || !found_mem)) {
-		/* search for a node connected to the same router */
-		sz = router->ports * sizeof(struct sn_hwperf_port_info);
-		BUG_ON(sz > sizeof(ptdata));
-		e = ia64_sn_hwperf_op(sn_hwperf_master_nasid,
-				      SN_HWPERF_ENUM_PORTS, router->id, sz,
-				      (u64)&ptdata, 0, 0, NULL);
-		if (e != SN_HWPERF_OP_OK) {
-			e = -EINVAL;
-			goto err;
-		}
-		for (j=0; j < router->ports; j++) {
-			dest = sn_hwperf_findobj_id(objbuf, nobj,
-				ptdata[j].conn_id);
-			if (!dest || dest->id == node ||
-			    SN_HWPERF_FOREIGN(dest) ||
-			    !SN_HWPERF_IS_NODE(dest) ||
-			    SN_HWPERF_IS_IONODE(dest)) {
-				continue;
-			}
-			c = sn_hwperf_obj_to_cnode(dest);
-			if (!found_cpu && sn_hwperf_has_cpus(c)) {
-				if (near_cpu_node)
-					*near_cpu_node = c;
-				found_cpu++;
-			}
-			if (!found_mem && sn_hwperf_has_mem(c)) {
-				if (near_mem_node)
-					*near_mem_node = c;
-				found_mem++;
-			}
-			if (found_cpu && found_mem)
-				break;
-		}
-	}
-
-	if (!found_cpu || !found_mem) {
-		/* resort to _any_ node with CPUs and memory */
-		for (i=0, op=objbuf; i < nobj; i++, op++) {
-			if (SN_HWPERF_FOREIGN(op) ||
-			    SN_HWPERF_IS_IONODE(op) ||
-			    !SN_HWPERF_IS_NODE(op)) {
-				continue;
-			}
-			c = sn_hwperf_obj_to_cnode(op);
-			if (!found_cpu && sn_hwperf_has_cpus(c)) {
-				if (near_cpu_node)
-					*near_cpu_node = c;
-				found_cpu++;
-			}
-			if (!found_mem && sn_hwperf_has_mem(c)) {
-				if (near_mem_node)
-					*near_mem_node = c;
-				found_mem++;
-			}
-			if (found_cpu && found_mem)
-				break;
-		}
-	}
-
-	if (!found_cpu || !found_mem)
-		e = -ENODATA;
-
-err:
-	return e;
-}
-
-
-static int sn_topology_show(struct seq_file *s, void *d)
-{
-	int sz;
-	int pt;
-	int e = 0;
-	int i;
-	int j;
-	const char *slabname;
-	int ordinal;
-	char slice;
-	struct cpuinfo_ia64 *c;
-	struct sn_hwperf_port_info *ptdata;
-	struct sn_hwperf_object_info *p;
-	struct sn_hwperf_object_info *obj = d;	/* this object */
-	struct sn_hwperf_object_info *objs = s->private; /* all objects */
-	u8 shubtype;
-	u8 system_size;
-	u8 sharing_size;
-	u8 partid;
-	u8 coher;
-	u8 nasid_shift;
-	u8 region_size;
-	u16 nasid_mask;
-	int nasid_msb;
-
-	if (obj == objs) {
-		seq_printf(s, "# sn_topology version 2\n");
-		seq_printf(s, "# objtype ordinal location partition"
-			" [attribute value [, ...]]\n");
-
-		if (ia64_sn_get_sn_info(0,
-			&shubtype, &nasid_mask, &nasid_shift, &system_size,
-			&sharing_size, &partid, &coher, &region_size))
-			BUG();
-		for (nasid_msb=63; nasid_msb > 0; nasid_msb--) {
-			if (((u64)nasid_mask << nasid_shift) & (1ULL << nasid_msb))
-				break;
-		}
-		seq_printf(s, "partition %u %s local "
-			"shubtype %s, "
-			"nasid_mask 0x%016llx, "
-			"nasid_bits %d:%d, "
-			"system_size %d, "
-			"sharing_size %d, "
-			"coherency_domain %d, "
-			"region_size %d\n",
-
-			partid, utsname()->nodename,
-			shubtype ? "shub2" : "shub1", 
-			(u64)nasid_mask << nasid_shift, nasid_msb, nasid_shift,
-			system_size, sharing_size, coher, region_size);
-
-		print_pci_topology(s);
-	}
-
-	if (SN_HWPERF_FOREIGN(obj)) {
-		/* private in another partition: not interesting */
-		return 0;
-	}
-
-	for (i = 0; i < SN_HWPERF_MAXSTRING && obj->name[i]; i++) {
-		if (obj->name[i] == ' ')
-			obj->name[i] = '_';
-	}
-
-	slabname = sn_hwperf_get_slabname(obj, objs, &ordinal);
-	seq_printf(s, "%s %d %s %s asic %s", slabname, ordinal, obj->location,
-		obj->sn_hwp_this_part ? "local" : "shared", obj->name);
-
-	if (ordinal < 0 || (!SN_HWPERF_IS_NODE(obj) && !SN_HWPERF_IS_IONODE(obj)))
-		seq_putc(s, '\n');
-	else {
-		cnodeid_t near_mem = -1;
-		cnodeid_t near_cpu = -1;
-
-		seq_printf(s, ", nasid 0x%x", cnodeid_to_nasid(ordinal));
-
-		if (sn_hwperf_get_nearest_node_objdata(objs, sn_hwperf_obj_cnt,
-			ordinal, &near_mem, &near_cpu) == 0) {
-			seq_printf(s, ", near_mem_nodeid %d, near_cpu_nodeid %d",
-				near_mem, near_cpu);
-		}
-
-		if (!SN_HWPERF_IS_IONODE(obj)) {
-			for_each_online_node(i) {
-				seq_printf(s, i ? ":%d" : ", dist %d",
-					node_distance(ordinal, i));
-			}
-		}
-
-		seq_putc(s, '\n');
-
-		/*
-		 * CPUs on this node, if any
-		 */
-		if (!SN_HWPERF_IS_IONODE(obj)) {
-			for_each_cpu_and(i, cpu_online_mask,
-					 cpumask_of_node(ordinal)) {
-				slice = 'a' + cpuid_to_slice(i);
-				c = cpu_data(i);
-				seq_printf(s, "cpu %d %s%c local"
-					   " freq %luMHz, arch ia64",
-					   i, obj->location, slice,
-					   c->proc_freq / 1000000);
-				for_each_online_cpu(j) {
-					seq_printf(s, j ? ":%d" : ", dist %d",
-						   node_distance(
-						    	cpu_to_node(i),
-						    	cpu_to_node(j)));
-				}
-				seq_putc(s, '\n');
-			}
-		}
-	}
-
-	if (obj->ports) {
-		/*
-		 * numalink ports
-		 */
-		sz = obj->ports * sizeof(struct sn_hwperf_port_info);
-		if ((ptdata = kmalloc(sz, GFP_KERNEL)) == NULL)
-			return -ENOMEM;
-		e = ia64_sn_hwperf_op(sn_hwperf_master_nasid,
-				      SN_HWPERF_ENUM_PORTS, obj->id, sz,
-				      (u64) ptdata, 0, 0, NULL);
-		if (e != SN_HWPERF_OP_OK)
-			return -EINVAL;
-		for (ordinal=0, p=objs; p != obj; p++) {
-			if (!SN_HWPERF_FOREIGN(p))
-				ordinal += p->ports;
-		}
-		for (pt = 0; pt < obj->ports; pt++) {
-			for (p = objs, i = 0; i < sn_hwperf_obj_cnt; i++, p++) {
-				if (ptdata[pt].conn_id == p->id) {
-					break;
-				}
-			}
-			seq_printf(s, "numalink %d %s-%d",
-			    ordinal+pt, obj->location, ptdata[pt].port);
-
-			if (i >= sn_hwperf_obj_cnt) {
-				/* no connection */
-				seq_puts(s, " local endpoint disconnected"
-					    ", protocol unknown\n");
-				continue;
-			}
-
-			if (obj->sn_hwp_this_part && p->sn_hwp_this_part)
-				/* both ends local to this partition */
-				seq_puts(s, " local");
-			else if (SN_HWPERF_FOREIGN(p))
-				/* both ends of the link in foreign partition */
-				seq_puts(s, " foreign");
-			else
-				/* link straddles a partition */
-				seq_puts(s, " shared");
-
-			/*
-			 * Unlikely, but strictly should query the LLP config
-			 * registers because an NL4R can be configured to run
-			 * NL3 protocol, even when not talking to an NL3 router.
-			 * Ditto for node-node.
-			 */
-			seq_printf(s, " endpoint %s-%d, protocol %s\n",
-				p->location, ptdata[pt].conn_port,
-				(SN_HWPERF_IS_NL3ROUTER(obj) ||
-				SN_HWPERF_IS_NL3ROUTER(p)) ?  "LLP3" : "LLP4");
-		}
-		kfree(ptdata);
-	}
-
-	return 0;
-}
-
-static void *sn_topology_start(struct seq_file *s, loff_t * pos)
-{
-	struct sn_hwperf_object_info *objs = s->private;
-
-	if (*pos < sn_hwperf_obj_cnt)
-		return (void *)(objs + *pos);
-
-	return NULL;
-}
-
-static void *sn_topology_next(struct seq_file *s, void *v, loff_t * pos)
-{
-	++*pos;
-	return sn_topology_start(s, pos);
-}
-
-static void sn_topology_stop(struct seq_file *m, void *v)
-{
-	return;
-}
-
-/*
- * /proc/sgi_sn/sn_topology, read-only using seq_file
- */
-static const struct seq_operations sn_topology_seq_ops = {
-	.start = sn_topology_start,
-	.next = sn_topology_next,
-	.stop = sn_topology_stop,
-	.show = sn_topology_show
-};
-
-struct sn_hwperf_op_info {
-	u64 op;
-	struct sn_hwperf_ioctl_args *a;
-	void *p;
-	int *v0;
-	int ret;
-};
-
-static void sn_hwperf_call_sal(void *info)
-{
-	struct sn_hwperf_op_info *op_info = info;
-	int r;
-
-	r = ia64_sn_hwperf_op(sn_hwperf_master_nasid, op_info->op,
-		      op_info->a->arg, op_info->a->sz,
-		      (u64) op_info->p, 0, 0, op_info->v0);
-	op_info->ret = r;
-}
-
-static long sn_hwperf_call_sal_work(void *info)
-{
-	sn_hwperf_call_sal(info);
-	return 0;
-}
-
-static int sn_hwperf_op_cpu(struct sn_hwperf_op_info *op_info)
-{
-	u32 cpu;
-	u32 use_ipi;
-	int r = 0;
-	
-	cpu = (op_info->a->arg & SN_HWPERF_ARG_CPU_MASK) >> 32;
-	use_ipi = op_info->a->arg & SN_HWPERF_ARG_USE_IPI_MASK;
-	op_info->a->arg &= SN_HWPERF_ARG_OBJID_MASK;
-
-	if (cpu != SN_HWPERF_ARG_ANY_CPU) {
-		if (cpu >= nr_cpu_ids || !cpu_online(cpu)) {
-			r = -EINVAL;
-			goto out;
-		}
-	}
-
-	if (cpu == SN_HWPERF_ARG_ANY_CPU) {
-		/* don't care which cpu */
-		sn_hwperf_call_sal(op_info);
-	} else if (cpu == get_cpu()) {
-		/* already on correct cpu */
-		sn_hwperf_call_sal(op_info);
-		put_cpu();
-	} else {
-		put_cpu();
-		if (use_ipi) {
-			/* use an interprocessor interrupt to call SAL */
-			smp_call_function_single(cpu, sn_hwperf_call_sal,
-				op_info, 1);
-		} else {
-			/* Call on the target CPU */
-			work_on_cpu_safe(cpu, sn_hwperf_call_sal_work, op_info);
-		}
-	}
-	r = op_info->ret;
-
-out:
-	return r;
-}
-
-/* map SAL hwperf error code to system error code */
-static int sn_hwperf_map_err(int hwperf_err)
-{
-	int e;
-
-	switch(hwperf_err) {
-	case SN_HWPERF_OP_OK:
-		e = 0;
-		break;
-
-	case SN_HWPERF_OP_NOMEM:
-		e = -ENOMEM;
-		break;
-
-	case SN_HWPERF_OP_NO_PERM:
-		e = -EPERM;
-		break;
-
-	case SN_HWPERF_OP_IO_ERROR:
-		e = -EIO;
-		break;
-
-	case SN_HWPERF_OP_BUSY:
-		e = -EBUSY;
-		break;
-
-	case SN_HWPERF_OP_RECONFIGURE:
-		e = -EAGAIN;
-		break;
-
-	case SN_HWPERF_OP_INVAL:
-	default:
-		e = -EINVAL;
-		break;
-	}
-
-	return e;
-}
-
-/*
- * ioctl for "sn_hwperf" misc device
- */
-static long sn_hwperf_ioctl(struct file *fp, u32 op, unsigned long arg)
-{
-	struct sn_hwperf_ioctl_args a;
-	struct cpuinfo_ia64 *cdata;
-	struct sn_hwperf_object_info *objs;
-	struct sn_hwperf_object_info *cpuobj;
-	struct sn_hwperf_op_info op_info;
-	void *p = NULL;
-	int nobj;
-	char slice;
-	int node;
-	int r;
-	int v0;
-	int i;
-	int j;
-
-	/* only user requests are allowed here */
-	if ((op & SN_HWPERF_OP_MASK) < 10) {
-		r = -EINVAL;
-		goto error;
-	}
-	r = copy_from_user(&a, (const void __user *)arg,
-		sizeof(struct sn_hwperf_ioctl_args));
-	if (r != 0) {
-		r = -EFAULT;
-		goto error;
-	}
-
-	/*
-	 * Allocate memory to hold a kernel copy of the user buffer. The
-	 * buffer contents are either copied in or out (or both) of user
-	 * space depending on the flags encoded in the requested operation.
-	 */
-	if (a.ptr) {
-		p = vmalloc(a.sz);
-		if (!p) {
-			r = -ENOMEM;
-			goto error;
-		}
-	}
-
-	if (op & SN_HWPERF_OP_MEM_COPYIN) {
-		r = copy_from_user(p, (const void __user *)a.ptr, a.sz);
-		if (r != 0) {
-			r = -EFAULT;
-			goto error;
-		}
-	}
-
-	switch (op) {
-	case SN_HWPERF_GET_CPU_INFO:
-		if (a.sz == sizeof(u64)) {
-			/* special case to get size needed */
-			*(u64 *) p = (u64) num_online_cpus() *
-				sizeof(struct sn_hwperf_object_info);
-		} else
-		if (a.sz < num_online_cpus() * sizeof(struct sn_hwperf_object_info)) {
-			r = -ENOMEM;
-			goto error;
-		} else
-		if ((r = sn_hwperf_enum_objects(&nobj, &objs)) == 0) {
-			int cpuobj_index = 0;
-
-			memset(p, 0, a.sz);
-			for (i = 0; i < nobj; i++) {
-				if (!SN_HWPERF_IS_NODE(objs + i))
-					continue;
-				node = sn_hwperf_obj_to_cnode(objs + i);
-				for_each_online_cpu(j) {
-					if (node != cpu_to_node(j))
-						continue;
-					cpuobj = (struct sn_hwperf_object_info *) p + cpuobj_index++;
-					slice = 'a' + cpuid_to_slice(j);
-					cdata = cpu_data(j);
-					cpuobj->id = j;
-					snprintf(cpuobj->name,
-						 sizeof(cpuobj->name),
-						 "CPU %luMHz %s",
-						 cdata->proc_freq / 1000000,
-						 cdata->vendor);
-					snprintf(cpuobj->location,
-						 sizeof(cpuobj->location),
-						 "%s%c", objs[i].location,
-						 slice);
-				}
-			}
-
-			vfree(objs);
-		}
-		break;
-
-	case SN_HWPERF_GET_NODE_NASID:
-		if (a.sz != sizeof(u64) ||
-		   (node = a.arg) < 0 || !cnode_possible(node)) {
-			r = -EINVAL;
-			goto error;
-		}
-		*(u64 *)p = (u64)cnodeid_to_nasid(node);
-		break;
-
-	case SN_HWPERF_GET_OBJ_NODE:
-		i = a.arg;
-		if (a.sz != sizeof(u64) || i < 0) {
-			r = -EINVAL;
-			goto error;
-		}
-		if ((r = sn_hwperf_enum_objects(&nobj, &objs)) == 0) {
-			if (i >= nobj) {
-				r = -EINVAL;
-				vfree(objs);
-				goto error;
-			}
-			if (objs[i].id != a.arg) {
-				for (i = 0; i < nobj; i++) {
-					if (objs[i].id == a.arg)
-						break;
-				}
-			}
-			if (i == nobj) {
-				r = -EINVAL;
-				vfree(objs);
-				goto error;
-			}
-
-			if (!SN_HWPERF_IS_NODE(objs + i) &&
-			    !SN_HWPERF_IS_IONODE(objs + i)) {
-			    	r = -ENOENT;
-				vfree(objs);
-				goto error;
-			}
-
-			*(u64 *)p = (u64)sn_hwperf_obj_to_cnode(objs + i);
-			vfree(objs);
-		}
-		break;
-
-	case SN_HWPERF_GET_MMRS:
-	case SN_HWPERF_SET_MMRS:
-	case SN_HWPERF_OBJECT_DISTANCE:
-		op_info.p = p;
-		op_info.a = &a;
-		op_info.v0 = &v0;
-		op_info.op = op;
-		r = sn_hwperf_op_cpu(&op_info);
-		if (r) {
-			r = sn_hwperf_map_err(r);
-			a.v0 = v0;
-			goto error;
-		}
-		break;
-
-	default:
-		/* all other ops are a direct SAL call */
-		r = ia64_sn_hwperf_op(sn_hwperf_master_nasid, op,
-			      a.arg, a.sz, (u64) p, 0, 0, &v0);
-		if (r) {
-			r = sn_hwperf_map_err(r);
-			goto error;
-		}
-		a.v0 = v0;
-		break;
-	}
-
-	if (op & SN_HWPERF_OP_MEM_COPYOUT) {
-		r = copy_to_user((void __user *)a.ptr, p, a.sz);
-		if (r != 0) {
-			r = -EFAULT;
-			goto error;
-		}
-	}
-
-error:
-	vfree(p);
-
-	return r;
-}
-
-static const struct file_operations sn_hwperf_fops = {
-	.unlocked_ioctl = sn_hwperf_ioctl,
-	.llseek = noop_llseek,
-};
-
-static struct miscdevice sn_hwperf_dev = {
-	MISC_DYNAMIC_MINOR,
-	"sn_hwperf",
-	&sn_hwperf_fops
-};
-
-static int sn_hwperf_init(void)
-{
-	u64 v;
-	int salr;
-	int e = 0;
-
-	/* single threaded, once-only initialization */
-	mutex_lock(&sn_hwperf_init_mutex);
-
-	if (sn_hwperf_salheap) {
-		mutex_unlock(&sn_hwperf_init_mutex);
-		return e;
-	}
-
-	/*
-	 * The PROM code needs a fixed reference node. For convenience the
-	 * same node as the console I/O is used.
-	 */
-	sn_hwperf_master_nasid = (nasid_t) ia64_sn_get_console_nasid();
-
-	/*
-	 * Request the needed size and install the PROM scratch area.
-	 * The PROM keeps various tracking bits in this memory area.
-	 */
-	salr = ia64_sn_hwperf_op(sn_hwperf_master_nasid,
-				 (u64) SN_HWPERF_GET_HEAPSIZE, 0,
-				 (u64) sizeof(u64), (u64) &v, 0, 0, NULL);
-	if (salr != SN_HWPERF_OP_OK) {
-		e = -EINVAL;
-		goto out;
-	}
-
-	if ((sn_hwperf_salheap = vmalloc(v)) == NULL) {
-		e = -ENOMEM;
-		goto out;
-	}
-	salr = ia64_sn_hwperf_op(sn_hwperf_master_nasid,
-				 SN_HWPERF_INSTALL_HEAP, 0, v,
-				 (u64) sn_hwperf_salheap, 0, 0, NULL);
-	if (salr != SN_HWPERF_OP_OK) {
-		e = -EINVAL;
-		goto out;
-	}
-
-	salr = ia64_sn_hwperf_op(sn_hwperf_master_nasid,
-				 SN_HWPERF_OBJECT_COUNT, 0,
-				 sizeof(u64), (u64) &v, 0, 0, NULL);
-	if (salr != SN_HWPERF_OP_OK) {
-		e = -EINVAL;
-		goto out;
-	}
-	sn_hwperf_obj_cnt = (int)v;
-
-out:
-	if (e < 0 && sn_hwperf_salheap) {
-		vfree(sn_hwperf_salheap);
-		sn_hwperf_salheap = NULL;
-		sn_hwperf_obj_cnt = 0;
-	}
-	mutex_unlock(&sn_hwperf_init_mutex);
-	return e;
-}
-
-int sn_topology_open(struct inode *inode, struct file *file)
-{
-	int e;
-	struct seq_file *seq;
-	struct sn_hwperf_object_info *objbuf;
-	int nobj;
-
-	if ((e = sn_hwperf_enum_objects(&nobj, &objbuf)) == 0) {
-		e = seq_open(file, &sn_topology_seq_ops);
-		seq = file->private_data;
-		seq->private = objbuf;
-	}
-
-	return e;
-}
-
-int sn_topology_release(struct inode *inode, struct file *file)
-{
-	struct seq_file *seq = file->private_data;
-
-	vfree(seq->private);
-	return seq_release(inode, file);
-}
-
-int sn_hwperf_get_nearest_node(cnodeid_t node,
-	cnodeid_t *near_mem_node, cnodeid_t *near_cpu_node)
-{
-	int e;
-	int nobj;
-	struct sn_hwperf_object_info *objbuf;
-
-	if ((e = sn_hwperf_enum_objects(&nobj, &objbuf)) == 0) {
-		e = sn_hwperf_get_nearest_node_objdata(objbuf, nobj,
-			node, near_mem_node, near_cpu_node);
-		vfree(objbuf);
-	}
-
-	return e;
-}
-
-static int sn_hwperf_misc_register_init(void)
-{
-	int e;
-
-	if (!ia64_platform_is("sn2"))
-		return 0;
-
-	sn_hwperf_init();
-
-	/*
-	 * Register a dynamic misc device for hwperf ioctls. Platforms
-	 * supporting hotplug will create /dev/sn_hwperf, else user
-	 * can to look up the minor number in /proc/misc.
-	 */
-	if ((e = misc_register(&sn_hwperf_dev)) != 0) {
-		printk(KERN_ERR "sn_hwperf_misc_register_init: failed to "
-		"register misc device for \"%s\"\n", sn_hwperf_dev.name);
-	}
-
-	return e;
-}
-
-device_initcall(sn_hwperf_misc_register_init); /* after misc_init() */
-EXPORT_SYMBOL(sn_hwperf_get_nearest_node);
diff --git a/arch/ia64/sn/kernel/sn2/sn_proc_fs.c b/arch/ia64/sn/kernel/sn2/sn_proc_fs.c
deleted file mode 100644
index c2a4d84297b0..000000000000
--- a/arch/ia64/sn/kernel/sn2/sn_proc_fs.c
+++ /dev/null
@@ -1,69 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2000-2005 Silicon Graphics, Inc. All rights reserved.
- */
-
-#ifdef CONFIG_PROC_FS
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include <linux/uaccess.h>
-#include <asm/sn/sn_sal.h>
-
-static int partition_id_show(struct seq_file *s, void *p)
-{
-	seq_printf(s, "%d\n", sn_partition_id);
-	return 0;
-}
-
-static int system_serial_number_show(struct seq_file *s, void *p)
-{
-	seq_printf(s, "%s\n", sn_system_serial_number());
-	return 0;
-}
-
-static int licenseID_show(struct seq_file *s, void *p)
-{
-	seq_printf(s, "0x%llx\n", sn_partition_serial_number_val());
-	return 0;
-}
-
-static int coherence_id_show(struct seq_file *s, void *p)
-{
-	seq_printf(s, "%d\n", partition_coherence_id());
-
-	return 0;
-}
-
-/* /proc/sgi_sn/sn_topology uses seq_file, see sn_hwperf.c */
-extern int sn_topology_open(struct inode *, struct file *);
-extern int sn_topology_release(struct inode *, struct file *);
-
-static const struct file_operations proc_sn_topo_fops = {
-	.open		= sn_topology_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= sn_topology_release,
-};
-
-void register_sn_procfs(void)
-{
-	static struct proc_dir_entry *sgi_proc_dir = NULL;
-
-	BUG_ON(sgi_proc_dir != NULL);
-	if (!(sgi_proc_dir = proc_mkdir("sgi_sn", NULL)))
-		return;
-
-	proc_create_single("partition_id", 0444, sgi_proc_dir,
-			partition_id_show);
-	proc_create_single("system_serial_number", 0444, sgi_proc_dir,
-			system_serial_number_show);
-	proc_create_single("licenseID", 0444, sgi_proc_dir, licenseID_show);
-	proc_create_single("coherence_id", 0444, sgi_proc_dir,
-			coherence_id_show);
-	proc_create("sn_topology", 0444, sgi_proc_dir, &proc_sn_topo_fops);
-}
-
-#endif /* CONFIG_PROC_FS */
diff --git a/arch/ia64/sn/kernel/sn2/timer.c b/arch/ia64/sn/kernel/sn2/timer.c
deleted file mode 100644
index 3009d9d86f29..000000000000
--- a/arch/ia64/sn/kernel/sn2/timer.c
+++ /dev/null
@@ -1,61 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * linux/arch/ia64/sn/kernel/sn2/timer.c
- *
- * Copyright (C) 2003 Silicon Graphics, Inc.
- * Copyright (C) 2003 Hewlett-Packard Co
- *	David Mosberger <davidm@hpl.hp.com>: updated for new timer-interpolation infrastructure
- */
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/time.h>
-#include <linux/interrupt.h>
-#include <linux/clocksource.h>
-
-#include <asm/hw_irq.h>
-#include <asm/timex.h>
-
-#include <asm/sn/leds.h>
-#include <asm/sn/shub_mmr.h>
-#include <asm/sn/clksupport.h>
-
-extern unsigned long sn_rtc_cycles_per_second;
-
-static u64 read_sn2(struct clocksource *cs)
-{
-	return (u64)readq(RTC_COUNTER_ADDR);
-}
-
-static struct clocksource clocksource_sn2 = {
-        .name           = "sn2_rtc",
-        .rating         = 450,
-        .read           = read_sn2,
-        .mask           = (1LL << 55) - 1,
-        .flags          = CLOCK_SOURCE_IS_CONTINUOUS,
-};
-
-/*
- * sn udelay uses the RTC instead of the ITC because the ITC is not
- * synchronized across all CPUs, and the thread may migrate to another CPU
- * if preemption is enabled.
- */
-static void
-ia64_sn_udelay (unsigned long usecs)
-{
-	unsigned long start = rtc_time();
-	unsigned long end = start +
-			usecs * sn_rtc_cycles_per_second / 1000000;
-
-	while (time_before((unsigned long)rtc_time(), end))
-		cpu_relax();
-}
-
-void __init sn_timer_init(void)
-{
-	clocksource_sn2.archdata.fsys_mmio = RTC_COUNTER_ADDR;
-	clocksource_register_hz(&clocksource_sn2, sn_rtc_cycles_per_second);
-
-	ia64_udelay = &ia64_sn_udelay;
-}
diff --git a/arch/ia64/sn/kernel/sn2/timer_interrupt.c b/arch/ia64/sn/kernel/sn2/timer_interrupt.c
deleted file mode 100644
index 103d6ea8e94b..000000000000
--- a/arch/ia64/sn/kernel/sn2/timer_interrupt.c
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- *
- *
- * Copyright (c) 2005, 2006 Silicon Graphics, Inc.  All Rights Reserved.
- * 
- * This program is free software; you can redistribute it and/or modify it 
- * under the terms of version 2 of the GNU General Public License 
- * as published by the Free Software Foundation.
- * 
- * This program is distributed in the hope that it would be useful, but 
- * WITHOUT ANY WARRANTY; without even the implied warranty of 
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
- * 
- * Further, this software is distributed without any warranty that it is 
- * free of the rightful claim of any third person regarding infringement 
- * or the like.  Any license provided herein, whether implied or 
- * otherwise, applies only to this software file.  Patent licenses, if 
- * any, provided herein do not apply to combinations of this program with 
- * other software, or any other product whatsoever.
- * 
- * You should have received a copy of the GNU General Public 
- * License along with this program; if not, write the Free Software 
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
- * 
- * For further information regarding this notice, see: 
- * 
- * http://oss.sgi.com/projects/GenInfo/NoticeExplan
- */
-
-#include <linux/interrupt.h>
-#include <asm/sn/pda.h>
-#include <asm/sn/leds.h>
-
-extern void sn_lb_int_war_check(void);
-extern irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs);
-
-#define SN_LB_INT_WAR_INTERVAL 100
-
-void sn_timer_interrupt(int irq, void *dev_id)
-{
-	/* LED blinking */
-	if (!pda->hb_count--) {
-		pda->hb_count = HZ / 2;
-		set_led_bits(pda->hb_state ^=
-			     LED_CPU_HEARTBEAT, LED_CPU_HEARTBEAT);
-	}
-
-	if (is_shub1()) {
-		if (enable_shub_wars_1_1()) {
-			/* Bugfix code for SHUB 1.1 */
-			if (pda->pio_shub_war_cam_addr)
-				*pda->pio_shub_war_cam_addr = 0x8000000000000010UL;
-		}
-		if (pda->sn_lb_int_war_ticks == 0)
-			sn_lb_int_war_check();
-		pda->sn_lb_int_war_ticks++;
-		if (pda->sn_lb_int_war_ticks >= SN_LB_INT_WAR_INTERVAL)
-			pda->sn_lb_int_war_ticks = 0;
-	}
-}