powerpc: Merge arch/ppc64/mm to arch/powerpc/mm

This moves the remaining files in arch/ppc64/mm to arch/powerpc/mm,
and arranges that we use them when compiling with ARCH=ppc64.

Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 0 insertions, 158 deletions

diff --git a/arch/ppc64/mm/slb.c b/arch/ppc64/mm/slb.c
deleted file mode 100644
index 0473953f6a3..00000000000
--- a/arch/ppc64/mm/slb.c
+++ /dev/null
@@ -1,158 +0,0 @@
-/*
- * PowerPC64 SLB support.
- *
- * Copyright (C) 2004 David Gibson <dwg@au.ibm.com>, IBM
- * Based on earlier code writteh by:
- * Dave Engebretsen and Mike Corrigan {engebret|mikejc}@us.ibm.com
- *    Copyright (c) 2001 Dave Engebretsen
- * Copyright (C) 2002 Anton Blanchard <anton@au.ibm.com>, IBM
- *
- *
- *      This program is free software; you can redistribute it and/or
- *      modify it under the terms of the GNU General Public License
- *      as published by the Free Software Foundation; either version
- *      2 of the License, or (at your option) any later version.
- */
-
-#include <linux/config.h>
-#include <asm/pgtable.h>
-#include <asm/mmu.h>
-#include <asm/mmu_context.h>
-#include <asm/paca.h>
-#include <asm/cputable.h>
-
-extern void slb_allocate(unsigned long ea);
-
-static inline unsigned long mk_esid_data(unsigned long ea, unsigned long slot)
-{
-	return (ea & ESID_MASK) | SLB_ESID_V | slot;
-}
-
-static inline unsigned long mk_vsid_data(unsigned long ea, unsigned long flags)
-{
-	return (get_kernel_vsid(ea) << SLB_VSID_SHIFT) | flags;
-}
-
-static inline void create_slbe(unsigned long ea, unsigned long flags,
-			       unsigned long entry)
-{
-	asm volatile("slbmte  %0,%1" :
-		     : "r" (mk_vsid_data(ea, flags)),
-		       "r" (mk_esid_data(ea, entry))
-		     : "memory" );
-}
-
-static void slb_flush_and_rebolt(void)
-{
-	/* If you change this make sure you change SLB_NUM_BOLTED
-	 * appropriately too. */
-	unsigned long ksp_flags = SLB_VSID_KERNEL;
-	unsigned long ksp_esid_data;
-
-	WARN_ON(!irqs_disabled());
-
-	if (cpu_has_feature(CPU_FTR_16M_PAGE))
-		ksp_flags |= SLB_VSID_L;
-
-	ksp_esid_data = mk_esid_data(get_paca()->kstack, 2);
-	if ((ksp_esid_data & ESID_MASK) == KERNELBASE)
-		ksp_esid_data &= ~SLB_ESID_V;
-
-	/* We need to do this all in asm, so we're sure we don't touch
-	 * the stack between the slbia and rebolting it. */
-	asm volatile("isync\n"
-		     "slbia\n"
-		     /* Slot 1 - first VMALLOC segment */
-		     "slbmte	%0,%1\n"
-		     /* Slot 2 - kernel stack */
-		     "slbmte	%2,%3\n"
-		     "isync"
-		     :: "r"(mk_vsid_data(VMALLOCBASE, SLB_VSID_KERNEL)),
-		        "r"(mk_esid_data(VMALLOCBASE, 1)),
-		        "r"(mk_vsid_data(ksp_esid_data, ksp_flags)),
-		        "r"(ksp_esid_data)
-		     : "memory");
-}
-
-/* Flush all user entries from the segment table of the current processor. */
-void switch_slb(struct task_struct *tsk, struct mm_struct *mm)
-{
-	unsigned long offset = get_paca()->slb_cache_ptr;
-	unsigned long esid_data = 0;
-	unsigned long pc = KSTK_EIP(tsk);
-	unsigned long stack = KSTK_ESP(tsk);
-	unsigned long unmapped_base;
-
-	if (offset <= SLB_CACHE_ENTRIES) {
-		int i;
-		asm volatile("isync" : : : "memory");
-		for (i = 0; i < offset; i++) {
-			esid_data = ((unsigned long)get_paca()->slb_cache[i]
-				<< SID_SHIFT) | SLBIE_C;
-			asm volatile("slbie %0" : : "r" (esid_data));
-		}
-		asm volatile("isync" : : : "memory");
-	} else {
-		slb_flush_and_rebolt();
-	}
-
-	/* Workaround POWER5 < DD2.1 issue */
-	if (offset == 1 || offset > SLB_CACHE_ENTRIES)
-		asm volatile("slbie %0" : : "r" (esid_data));
-
-	get_paca()->slb_cache_ptr = 0;
-	get_paca()->context = mm->context;
-
-	/*
-	 * preload some userspace segments into the SLB.
-	 */
-	if (test_tsk_thread_flag(tsk, TIF_32BIT))
-		unmapped_base = TASK_UNMAPPED_BASE_USER32;
-	else
-		unmapped_base = TASK_UNMAPPED_BASE_USER64;
-
-	if (pc >= KERNELBASE)
-		return;
-	slb_allocate(pc);
-
-	if (GET_ESID(pc) == GET_ESID(stack))
-		return;
-
-	if (stack >= KERNELBASE)
-		return;
-	slb_allocate(stack);
-
-	if ((GET_ESID(pc) == GET_ESID(unmapped_base))
-	    || (GET_ESID(stack) == GET_ESID(unmapped_base)))
-		return;
-
-	if (unmapped_base >= KERNELBASE)
-		return;
-	slb_allocate(unmapped_base);
-}
-
-void slb_initialize(void)
-{
-	/* On iSeries the bolted entries have already been set up by
-	 * the hypervisor from the lparMap data in head.S */
-#ifndef CONFIG_PPC_ISERIES
-	unsigned long flags = SLB_VSID_KERNEL;
-
- 	/* Invalidate the entire SLB (even slot 0) & all the ERATS */
- 	if (cpu_has_feature(CPU_FTR_16M_PAGE))
- 		flags |= SLB_VSID_L;
-
- 	asm volatile("isync":::"memory");
- 	asm volatile("slbmte  %0,%0"::"r" (0) : "memory");
-	asm volatile("isync; slbia; isync":::"memory");
-	create_slbe(KERNELBASE, flags, 0);
-	create_slbe(VMALLOCBASE, SLB_VSID_KERNEL, 1);
-	/* We don't bolt the stack for the time being - we're in boot,
-	 * so the stack is in the bolted segment.  By the time it goes
-	 * elsewhere, we'll call _switch() which will bolt in the new
-	 * one. */
-	asm volatile("isync":::"memory");
-#endif
-
-	get_paca()->stab_rr = SLB_NUM_BOLTED;
-}