X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fppc%2Fmm%2Fhashtable.S;fp=arch%2Fppc%2Fmm%2Fhashtable.S;h=3ec87c91343e8f2dac625d7391117b165170571d;hb=64ba3f394c830ec48a1c31b53dcae312c56f1604;hp=e756942e65c40fe482f3f223321938ffc9103f65;hpb=be1e6109ac94a859551f8e1774eb9a8469fe055c;p=linux-2.6.git

diff --git a/arch/ppc/mm/hashtable.S b/arch/ppc/mm/hashtable.S
index e756942e6..3ec87c913 100644
--- a/arch/ppc/mm/hashtable.S
+++ b/arch/ppc/mm/hashtable.S
@@ -1,4 +1,6 @@
 /*
+ *  arch/ppc/kernel/hashtable.S
+ *
  *  $Id: hashtable.S,v 1.6 1999/10/08 01:56:15 paulus Exp $
  *
  *  PowerPC version
@@ -21,6 +23,7 @@
  *
  */
 
+#include <linux/config.h>
 #include <asm/processor.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
@@ -73,6 +76,12 @@ _GLOBAL(hash_page_sync)
  */
 	.text
 _GLOBAL(hash_page)
+#ifdef CONFIG_PPC64BRIDGE
+	mfmsr	r0
+	clrldi	r0,r0,1		/* make sure it's in 32-bit mode */
+	MTMSRD(r0)
+	isync
+#endif
 	tophys(r7,0)			/* gets -KERNELBASE into r7 */
 #ifdef CONFIG_SMP
 	addis	r8,r7,mmu_hash_lock@h
@@ -296,6 +305,7 @@ Hash_base = 0xc0180000
 Hash_bits = 12				/* e.g. 256kB hash table */
 Hash_msk = (((1 << Hash_bits) - 1) * 64)
 
+#ifndef CONFIG_PPC64BRIDGE
 /* defines for the PTE format for 32-bit PPCs */
 #define PTE_SIZE	8
 #define PTEG_SIZE	64
@@ -309,6 +319,21 @@ Hash_msk = (((1 << Hash_bits) - 1) * 64)
 #define SET_V(r)	oris r,r,PTE_V@h
 #define CLR_V(r,t)	rlwinm r,r,0,1,31
 
+#else
+/* defines for the PTE format for 64-bit PPCs */
+#define PTE_SIZE	16
+#define PTEG_SIZE	128
+#define LG_PTEG_SIZE	7
+#define LDPTEu		ldu
+#define STPTE		std
+#define CMPPTE		cmpd
+#define PTE_H		2
+#define PTE_V		1
+#define TST_V(r)	andi. r,r,PTE_V
+#define SET_V(r)	ori r,r,PTE_V
+#define CLR_V(r,t)	li t,PTE_V; andc r,r,t
+#endif /* CONFIG_PPC64BRIDGE */
+
 #define HASH_LEFT	31-(LG_PTEG_SIZE+Hash_bits-1)
 #define HASH_RIGHT	31-LG_PTEG_SIZE
 
@@ -326,8 +351,14 @@ BEGIN_FTR_SECTION
 END_FTR_SECTION_IFSET(CPU_FTR_NEED_COHERENT)
 
 	/* Construct the high word of the PPC-style PTE (r5) */
+#ifndef CONFIG_PPC64BRIDGE
 	rlwinm	r5,r3,7,1,24		/* put VSID in 0x7fffff80 bits */
 	rlwimi	r5,r4,10,26,31		/* put in API (abbrev page index) */
+#else /* CONFIG_PPC64BRIDGE */
+	clrlwi	r3,r3,8			/* reduce vsid to 24 bits */
+	sldi	r5,r3,12		/* shift vsid into position */
+	rlwimi	r5,r4,16,20,24		/* put in API (abbrev page index) */
+#endif /* CONFIG_PPC64BRIDGE */
 	SET_V(r5)			/* set V (valid) bit */
 
 	/* Get the address of the primary PTE group in the hash table (r3) */
@@ -511,8 +542,14 @@ _GLOBAL(flush_hash_pages)
 	add	r3,r3,r0		/* note code below trims to 24 bits */
 
 	/* Construct the high word of the PPC-style PTE (r11) */
+#ifndef CONFIG_PPC64BRIDGE
 	rlwinm	r11,r3,7,1,24		/* put VSID in 0x7fffff80 bits */
 	rlwimi	r11,r4,10,26,31		/* put in API (abbrev page index) */
+#else /* CONFIG_PPC64BRIDGE */
+	clrlwi	r3,r3,8			/* reduce vsid to 24 bits */
+	sldi	r11,r3,12		/* shift vsid into position */
+	rlwimi	r11,r4,16,20,24		/* put in API (abbrev page index) */
+#endif /* CONFIG_PPC64BRIDGE */
 	SET_V(r11)			/* set V (valid) bit */
 
 #ifdef CONFIG_SMP