Merge HEAD from master.kernel.org:/pub/scm/linux/kernel/git/paulus/ppc64-2.6

17 files changed, 312 insertions, 226 deletions

diff --git a/include/asm-ppc64/abs_addr.h b/include/asm-ppc64/abs_addr.h
index 6d4e8e7..84c24d4 100644
--- a/include/asm-ppc64/abs_addr.h
+++ b/include/asm-ppc64/abs_addr.h
@@ -16,93 +16,51 @@
 #include <asm/page.h>
 #include <asm/prom.h>
 #include <asm/lmb.h>
+#include <asm/firmware.h>
 
-typedef u32 msChunks_entry;
-struct msChunks {
+struct mschunks_map {
         unsigned long num_chunks;
         unsigned long chunk_size;
         unsigned long chunk_shift;
         unsigned long chunk_mask;
-        msChunks_entry *abs;
+        u32 *mapping;
 };
 
-extern struct msChunks msChunks;
+extern struct mschunks_map mschunks_map;
 
-extern unsigned long msChunks_alloc(unsigned long, unsigned long, unsigned long);
-extern unsigned long reloc_offset(void);
+/* Chunks are 256 KB */
+#define MSCHUNKS_CHUNK_SHIFT	(18)
+#define MSCHUNKS_CHUNK_SIZE	(1UL << MSCHUNKS_CHUNK_SHIFT)
+#define MSCHUNKS_OFFSET_MASK	(MSCHUNKS_CHUNK_SIZE - 1)
 
-#ifdef CONFIG_MSCHUNKS
-
-static inline unsigned long
-chunk_to_addr(unsigned long chunk)
+static inline unsigned long chunk_to_addr(unsigned long chunk)
 {
-	unsigned long offset = reloc_offset();
-	struct msChunks *_msChunks = PTRRELOC(&msChunks);
-
-	return chunk << _msChunks->chunk_shift;
+	return chunk << MSCHUNKS_CHUNK_SHIFT;
 }
 
-static inline unsigned long
-addr_to_chunk(unsigned long addr)
+static inline unsigned long addr_to_chunk(unsigned long addr)
 {
-	unsigned long offset = reloc_offset();
-	struct msChunks *_msChunks = PTRRELOC(&msChunks);
-
-	return addr >> _msChunks->chunk_shift;
+	return addr >> MSCHUNKS_CHUNK_SHIFT;
 }
 
-static inline unsigned long
-chunk_offset(unsigned long addr)
+static inline unsigned long phys_to_abs(unsigned long pa)
 {
-	unsigned long offset = reloc_offset();
-	struct msChunks *_msChunks = PTRRELOC(&msChunks);
+	unsigned long chunk;
 
-	return addr & _msChunks->chunk_mask;
-}
+	/* This is a no-op on non-iSeries */
+	if (!firmware_has_feature(FW_FEATURE_ISERIES))
+		return pa;
 
-static inline unsigned long
-abs_chunk(unsigned long pchunk)
-{
-	unsigned long offset = reloc_offset();
-	struct msChunks *_msChunks = PTRRELOC(&msChunks);
-	if ( pchunk >= _msChunks->num_chunks ) {
-		return pchunk;
-	}
-	return PTRRELOC(_msChunks->abs)[pchunk];
-}
+	chunk = addr_to_chunk(pa);
 
-/* A macro so it can take pointers or unsigned long. */
-#define phys_to_abs(pa)						     \
-	({ unsigned long _pa = (unsigned long)(pa);			     \
-	   chunk_to_addr(abs_chunk(addr_to_chunk(_pa))) + chunk_offset(_pa); \
-	})
+	if (chunk < mschunks_map.num_chunks)
+		chunk = mschunks_map.mapping[chunk];
 
-static inline unsigned long
-physRpn_to_absRpn(unsigned long rpn)
-{
-	unsigned long pa = rpn << PAGE_SHIFT;
-	unsigned long aa = phys_to_abs(pa);
-	return (aa >> PAGE_SHIFT);
+	return chunk_to_addr(chunk) + (pa & MSCHUNKS_OFFSET_MASK);
 }
 
-/* A macro so it can take pointers or unsigned long. */
-#define abs_to_phys(aa) lmb_abs_to_phys((unsigned long)(aa))
-
-#else  /* !CONFIG_MSCHUNKS */
-
-#define chunk_to_addr(chunk) ((unsigned long)(chunk))
-#define addr_to_chunk(addr) (addr)
-#define chunk_offset(addr) (0)
-#define abs_chunk(pchunk) (pchunk)
-
-#define phys_to_abs(pa) (pa)
-#define physRpn_to_absRpn(rpn) (rpn)
-#define abs_to_phys(aa) (aa)
-
-#endif /* !CONFIG_MSCHUNKS */
-
 /* Convenience macros */
 #define virt_to_abs(va) phys_to_abs(__pa(va))
-#define abs_to_virt(aa) __va(abs_to_phys(aa))
+#define abs_to_virt(aa) __va(aa)
 
 #endif /* _ABS_ADDR_H */
diff --git a/include/asm-ppc64/cputable.h b/include/asm-ppc64/cputable.h
index d67fa9e..ae6cf38 100644
--- a/include/asm-ppc64/cputable.h
+++ b/include/asm-ppc64/cputable.h
@@ -56,11 +56,6 @@ struct cpu_spec {
 	 * BHT, SPD, etc... from head.S before branching to identify_machine
 	 */
 	cpu_setup_t	cpu_setup;
-
-	/* This is used to identify firmware features which are available
-	 * to the kernel.
-	 */
-	unsigned long   firmware_features;
 };
 
 extern struct cpu_spec		cpu_specs[];
@@ -71,39 +66,6 @@ static inline unsigned long cpu_has_feature(unsigned long feature)
 	return cur_cpu_spec->cpu_features & feature;
 }
 
-
-/* firmware feature bitmask values */
-#define FIRMWARE_MAX_FEATURES 63
-
-#define FW_FEATURE_PFT		(1UL<<0)
-#define FW_FEATURE_TCE		(1UL<<1)	
-#define FW_FEATURE_SPRG0	(1UL<<2)	
-#define FW_FEATURE_DABR		(1UL<<3)	
-#define FW_FEATURE_COPY		(1UL<<4)	
-#define FW_FEATURE_ASR		(1UL<<5)	
-#define FW_FEATURE_DEBUG	(1UL<<6)	
-#define FW_FEATURE_TERM		(1UL<<7)	
-#define FW_FEATURE_PERF		(1UL<<8)	
-#define FW_FEATURE_DUMP		(1UL<<9)	
-#define FW_FEATURE_INTERRUPT	(1UL<<10)	
-#define FW_FEATURE_MIGRATE	(1UL<<11)	
-#define FW_FEATURE_PERFMON	(1UL<<12)	
-#define FW_FEATURE_CRQ   	(1UL<<13)	
-#define FW_FEATURE_VIO   	(1UL<<14)	
-#define FW_FEATURE_RDMA   	(1UL<<15)	
-#define FW_FEATURE_LLAN   	(1UL<<16)	
-#define FW_FEATURE_BULK   	(1UL<<17)	
-#define FW_FEATURE_XDABR   	(1UL<<18)	
-#define FW_FEATURE_MULTITCE   	(1UL<<19)	
-#define FW_FEATURE_SPLPAR   	(1UL<<20)	
-
-typedef struct {
-    unsigned long val;
-    char * name;
-} firmware_feature_t;
-
-extern firmware_feature_t firmware_features_table[];
-
 #endif /* __ASSEMBLY__ */
 
 /* CPU kernel features */
@@ -140,10 +102,8 @@ extern firmware_feature_t firmware_features_table[];
 #define CPU_FTR_MMCRA_SIHV		ASM_CONST(0x0000080000000000)
 #define CPU_FTR_CTRL			ASM_CONST(0x0000100000000000)
 
-/* Platform firmware features */
-#define FW_FTR_				ASM_CONST(0x0000000000000001)
-
 #ifndef __ASSEMBLY__
+
 #define COMMON_USER_PPC64	(PPC_FEATURE_32 | PPC_FEATURE_64 | \
 			         PPC_FEATURE_HAS_FPU | PPC_FEATURE_HAS_MMU)
 
@@ -156,10 +116,9 @@ extern firmware_feature_t firmware_features_table[];
 #define CPU_FTR_PPCAS_ARCH_V2	(CPU_FTR_PPCAS_ARCH_V2_BASE)
 #else
 #define CPU_FTR_PPCAS_ARCH_V2	(CPU_FTR_PPCAS_ARCH_V2_BASE | CPU_FTR_16M_PAGE)
-#endif
+#endif /* CONFIG_PPC_ISERIES */
 
-#define COMMON_PPC64_FW	(0)
-#endif
+#endif /* __ASSEMBLY */
 
 #ifdef __ASSEMBLY__
 
diff --git a/include/asm-ppc64/firmware.h b/include/asm-ppc64/firmware.h
new file mode 100644
index 0000000..22bb85c
--- /dev/null
+++ b/include/asm-ppc64/firmware.h
@@ -0,0 +1,101 @@
+/*
+ *  include/asm-ppc64/firmware.h
+ *
+ *  Extracted from include/asm-ppc64/cputable.h
+ *
+ *  Copyright (C) 2001 Ben. Herrenschmidt (benh@kernel.crashing.org)
+ *
+ *  Modifications for ppc64:
+ *      Copyright (C) 2003 Dave Engebretsen <engebret@us.ibm.com>
+ *
+ *  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.
+ */
+#ifndef __ASM_PPC_FIRMWARE_H
+#define __ASM_PPC_FIRMWARE_H
+
+#ifdef __KERNEL__
+
+#ifndef __ASSEMBLY__
+
+/* firmware feature bitmask values */
+#define FIRMWARE_MAX_FEATURES 63
+
+#define FW_FEATURE_PFT		(1UL<<0)
+#define FW_FEATURE_TCE		(1UL<<1)
+#define FW_FEATURE_SPRG0	(1UL<<2)
+#define FW_FEATURE_DABR		(1UL<<3)
+#define FW_FEATURE_COPY		(1UL<<4)
+#define FW_FEATURE_ASR		(1UL<<5)
+#define FW_FEATURE_DEBUG	(1UL<<6)
+#define FW_FEATURE_TERM		(1UL<<7)
+#define FW_FEATURE_PERF		(1UL<<8)
+#define FW_FEATURE_DUMP		(1UL<<9)
+#define FW_FEATURE_INTERRUPT	(1UL<<10)
+#define FW_FEATURE_MIGRATE	(1UL<<11)
+#define FW_FEATURE_PERFMON	(1UL<<12)
+#define FW_FEATURE_CRQ		(1UL<<13)
+#define FW_FEATURE_VIO		(1UL<<14)
+#define FW_FEATURE_RDMA		(1UL<<15)
+#define FW_FEATURE_LLAN		(1UL<<16)
+#define FW_FEATURE_BULK		(1UL<<17)
+#define FW_FEATURE_XDABR	(1UL<<18)
+#define FW_FEATURE_MULTITCE	(1UL<<19)
+#define FW_FEATURE_SPLPAR	(1UL<<20)
+#define FW_FEATURE_ISERIES	(1UL<<21)
+
+enum {
+	FW_FEATURE_PSERIES_POSSIBLE = FW_FEATURE_PFT | FW_FEATURE_TCE |
+		FW_FEATURE_SPRG0 | FW_FEATURE_DABR | FW_FEATURE_COPY |
+		FW_FEATURE_ASR | FW_FEATURE_DEBUG | FW_FEATURE_TERM |
+		FW_FEATURE_PERF | FW_FEATURE_DUMP | FW_FEATURE_INTERRUPT |
+		FW_FEATURE_MIGRATE | FW_FEATURE_PERFMON | FW_FEATURE_CRQ |
+		FW_FEATURE_VIO | FW_FEATURE_RDMA | FW_FEATURE_LLAN |
+		FW_FEATURE_BULK | FW_FEATURE_XDABR | FW_FEATURE_MULTITCE |
+		FW_FEATURE_SPLPAR,
+	FW_FEATURE_PSERIES_ALWAYS = 0,
+	FW_FEATURE_ISERIES_POSSIBLE = FW_FEATURE_ISERIES,
+	FW_FEATURE_ISERIES_ALWAYS = FW_FEATURE_ISERIES,
+	FW_FEATURE_POSSIBLE =
+#ifdef CONFIG_PPC_PSERIES
+		FW_FEATURE_PSERIES_POSSIBLE |
+#endif
+#ifdef CONFIG_PPC_ISERIES
+		FW_FEATURE_ISERIES_POSSIBLE |
+#endif
+		0,
+	FW_FEATURE_ALWAYS =
+#ifdef CONFIG_PPC_PSERIES
+		FW_FEATURE_PSERIES_ALWAYS &
+#endif
+#ifdef CONFIG_PPC_ISERIES
+		FW_FEATURE_ISERIES_ALWAYS &
+#endif
+		FW_FEATURE_POSSIBLE,
+};
+
+/* This is used to identify firmware features which are available
+ * to the kernel.
+ */
+extern unsigned long	ppc64_firmware_features;
+
+static inline unsigned long firmware_has_feature(unsigned long feature)
+{
+	return (FW_FEATURE_ALWAYS & feature) ||
+		(FW_FEATURE_POSSIBLE & ppc64_firmware_features & feature);
+}
+
+#ifdef CONFIG_PPC_PSERIES
+typedef struct {
+    unsigned long val;
+    char * name;
+} firmware_feature_t;
+
+extern firmware_feature_t firmware_features_table[];
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __KERNEL__ */
+#endif /* __ASM_PPC_FIRMWARE_H */
diff --git a/include/asm-ppc64/imalloc.h b/include/asm-ppc64/imalloc.h
index e46ff68..42adf70 100644
--- a/include/asm-ppc64/imalloc.h
+++ b/include/asm-ppc64/imalloc.h
@@ -6,7 +6,7 @@
  */
 #define PHBS_IO_BASE  	  VMALLOC_END
 #define IMALLOC_BASE      (PHBS_IO_BASE + 0x80000000ul)	/* Reserve 2 gigs for PHBs */
-#define IMALLOC_END       (VMALLOC_START + EADDR_MASK)
+#define IMALLOC_END       (VMALLOC_START + PGTABLE_RANGE)
 
 
 /* imalloc region types */
diff --git a/include/asm-ppc64/iommu.h b/include/asm-ppc64/iommu.h
index 729de5c..72dcf81 100644
--- a/include/asm-ppc64/iommu.h
+++ b/include/asm-ppc64/iommu.h
@@ -104,9 +104,6 @@ extern void iommu_devnode_init_pSeries(struct device_node *dn);
 
 #ifdef CONFIG_PPC_ISERIES
 
-/* Initializes tables for bio buses */
-extern void __init iommu_vio_init(void);
-
 struct iSeries_Device_Node;
 /* Creates table for an individual device node */
 extern void iommu_devnode_init_iSeries(struct iSeries_Device_Node *dn);
diff --git a/include/asm-ppc64/lmb.h b/include/asm-ppc64/lmb.h
index a6cbca2..cb368bf 100644
--- a/include/asm-ppc64/lmb.h
+++ b/include/asm-ppc64/lmb.h
@@ -22,7 +22,6 @@
 
 struct lmb_property {
 	unsigned long base;
-	unsigned long physbase;
 	unsigned long size;
 };
 
diff --git a/include/asm-ppc64/machdep.h b/include/asm-ppc64/machdep.h
index f0ef063..ff2c928 100644
--- a/include/asm-ppc64/machdep.h
+++ b/include/asm-ppc64/machdep.h
@@ -140,6 +140,9 @@ struct machdep_calls {
 
 	/* Idle loop for this platform, leave empty for default idle loop */
 	int		(*idle_loop)(void);
+
+	/* Function to enable pmcs for this platform, called once per cpu. */
+	void		(*enable_pmcs)(void);
 };
 
 extern int default_idle(void);
diff --git a/include/asm-ppc64/mmu.h b/include/asm-ppc64/mmu.h
index 70348a8..ad36bb2 100644
--- a/include/asm-ppc64/mmu.h
+++ b/include/asm-ppc64/mmu.h
@@ -28,9 +28,12 @@
 #define STE_VSID_SHIFT	12
 
 /* Location of cpu0's segment table */
-#define STAB0_PAGE	0x9
+#define STAB0_PAGE	0x6
 #define STAB0_PHYS_ADDR	(STAB0_PAGE<<PAGE_SHIFT)
-#define STAB0_VIRT_ADDR	(KERNELBASE+STAB0_PHYS_ADDR)
+
+#ifndef __ASSEMBLY__
+extern char initial_stab[];
+#endif /* ! __ASSEMBLY */
 
 /*
  * SLB
@@ -259,8 +262,10 @@ extern void stabs_alloc(void);
 #define VSID_BITS	36
 #define VSID_MODULUS	((1UL<<VSID_BITS)-1)
 
-#define CONTEXT_BITS	20
-#define USER_ESID_BITS	15
+#define CONTEXT_BITS	19
+#define USER_ESID_BITS	16
+
+#define USER_VSID_RANGE	(1UL << (USER_ESID_BITS + SID_SHIFT))
 
 /*
  * This macro generates asm code to compute the VSID scramble
@@ -302,8 +307,7 @@ typedef unsigned long mm_context_id_t;
 typedef struct {
 	mm_context_id_t id;
 #ifdef CONFIG_HUGETLB_PAGE
-	pgd_t *huge_pgdir;
-	u16 htlb_segs; /* bitmask */
+	u16 low_htlb_areas, high_htlb_areas;
 #endif
 } mm_context_t;
 
diff --git a/include/asm-ppc64/naca.h b/include/asm-ppc64/naca.h
index bfb7caa3..d2afe64 100644
--- a/include/asm-ppc64/naca.h
+++ b/include/asm-ppc64/naca.h
@@ -12,8 +12,6 @@
 
 #include <asm/types.h>
 
-#ifndef __ASSEMBLY__
-
 struct naca_struct {
 	/* Kernel only data - undefined for user space */
 	void *xItVpdAreas;              /* VPD Data                  0x00 */
@@ -23,9 +21,4 @@ struct naca_struct {
 
 extern struct naca_struct naca;
 
-#endif /* __ASSEMBLY__ */
-
-#define NACA_PAGE      0x4
-#define NACA_PHYS_ADDR (NACA_PAGE<<PAGE_SHIFT)
-
 #endif /* _NACA_H */
diff --git a/include/asm-ppc64/page.h b/include/asm-ppc64/page.h
index a5893a3..a79a08d 100644
--- a/include/asm-ppc64/page.h
+++ b/include/asm-ppc64/page.h
@@ -37,39 +37,45 @@
 
 #define HUGETLB_PAGE_ORDER	(HPAGE_SHIFT - PAGE_SHIFT)
 
-/* For 64-bit processes the hugepage range is 1T-1.5T */
-#define TASK_HPAGE_BASE ASM_CONST(0x0000010000000000)
-#define TASK_HPAGE_END 	ASM_CONST(0x0000018000000000)
+#define HTLB_AREA_SHIFT		40
+#define HTLB_AREA_SIZE		(1UL << HTLB_AREA_SHIFT)
+#define GET_HTLB_AREA(x)	((x) >> HTLB_AREA_SHIFT)
 
 #define LOW_ESID_MASK(addr, len)	(((1U << (GET_ESID(addr+len-1)+1)) \
 	   	                	- (1U << GET_ESID(addr))) & 0xffff)
+#define HTLB_AREA_MASK(addr, len)	(((1U << (GET_HTLB_AREA(addr+len-1)+1)) \
+	   	                	- (1U << GET_HTLB_AREA(addr))) & 0xffff)
 
 #define ARCH_HAS_HUGEPAGE_ONLY_RANGE
 #define ARCH_HAS_PREPARE_HUGEPAGE_RANGE
+#define ARCH_HAS_SETCLEAR_HUGE_PTE
 
 #define touches_hugepage_low_range(mm, addr, len) \
-	(LOW_ESID_MASK((addr), (len)) & mm->context.htlb_segs)
-#define touches_hugepage_high_range(addr, len) \
-	(((addr) > (TASK_HPAGE_BASE-(len))) && ((addr) < TASK_HPAGE_END))
+	(LOW_ESID_MASK((addr), (len)) & (mm)->context.low_htlb_areas)
+#define touches_hugepage_high_range(mm, addr, len) \
+	(HTLB_AREA_MASK((addr), (len)) & (mm)->context.high_htlb_areas)
 
 #define __within_hugepage_low_range(addr, len, segmask) \
 	((LOW_ESID_MASK((addr), (len)) | (segmask)) == (segmask))
 #define within_hugepage_low_range(addr, len) \
 	__within_hugepage_low_range((addr), (len), \
-				    current->mm->context.htlb_segs)
-#define within_hugepage_high_range(addr, len) (((addr) >= TASK_HPAGE_BASE) \
-	  && ((addr)+(len) <= TASK_HPAGE_END) && ((addr)+(len) >= (addr)))
+				    current->mm->context.low_htlb_areas)
+#define __within_hugepage_high_range(addr, len, zonemask) \
+	((HTLB_AREA_MASK((addr), (len)) | (zonemask)) == (zonemask))
+#define within_hugepage_high_range(addr, len) \
+	__within_hugepage_high_range((addr), (len), \
+				    current->mm->context.high_htlb_areas)
 
 #define is_hugepage_only_range(mm, addr, len) \
-	(touches_hugepage_high_range((addr), (len)) || \
+	(touches_hugepage_high_range((mm), (addr), (len)) || \
 	  touches_hugepage_low_range((mm), (addr), (len)))
 #define HAVE_ARCH_HUGETLB_UNMAPPED_AREA
 
 #define in_hugepage_area(context, addr) \
 	(cpu_has_feature(CPU_FTR_16M_PAGE) && \
-	 ( (((addr) >= TASK_HPAGE_BASE) && ((addr) < TASK_HPAGE_END)) || \
+	 ( ((1 << GET_HTLB_AREA(addr)) & (context).high_htlb_areas) || \
 	   ( ((addr) < 0x100000000L) && \
-	     ((1 << GET_ESID(addr)) & (context).htlb_segs) ) ) )
+	     ((1 << GET_ESID(addr)) & (context).low_htlb_areas) ) ) )
 
 #else /* !CONFIG_HUGETLB_PAGE */
 
@@ -125,36 +131,42 @@ extern void copy_user_page(void *to, void *from, unsigned long vaddr, struct pag
  * Entries in the pte table are 64b, while entries in the pgd & pmd are 32b.
  */
 typedef struct { unsigned long pte; } pte_t;
-typedef struct { unsigned int  pmd; } pmd_t;
-typedef struct { unsigned int  pgd; } pgd_t;
+typedef struct { unsigned long pmd; } pmd_t;
+typedef struct { unsigned long pud; } pud_t;
+typedef struct { unsigned long pgd; } pgd_t;
 typedef struct { unsigned long pgprot; } pgprot_t;
 
 #define pte_val(x)	((x).pte)
 #define pmd_val(x)	((x).pmd)
+#define pud_val(x)	((x).pud)
 #define pgd_val(x)	((x).pgd)
 #define pgprot_val(x)	((x).pgprot)
 
-#define __pte(x)	((pte_t) { (x) } )
-#define __pmd(x)	((pmd_t) { (x) } )
-#define __pgd(x)	((pgd_t) { (x) } )
-#define __pgprot(x)	((pgprot_t) { (x) } )
+#define __pte(x)	((pte_t) { (x) })
+#define __pmd(x)	((pmd_t) { (x) })
+#define __pud(x)	((pud_t) { (x) })
+#define __pgd(x)	((pgd_t) { (x) })
+#define __pgprot(x)	((pgprot_t) { (x) })
 
 #else
 /*
  * .. while these make it easier on the compiler
  */
 typedef unsigned long pte_t;
-typedef unsigned int  pmd_t;
-typedef unsigned int  pgd_t;
+typedef unsigned long pmd_t;
+typedef unsigned long pud_t;
+typedef unsigned long pgd_t;
 typedef unsigned long pgprot_t;
 
 #define pte_val(x)	(x)
 #define pmd_val(x)	(x)
+#define pud_val(x)	(x)
 #define pgd_val(x)	(x)
 #define pgprot_val(x)	(x)
 
 #define __pte(x)	(x)
 #define __pmd(x)	(x)
+#define __pud(x)	(x)
 #define __pgd(x)	(x)
 #define __pgprot(x)	(x)
 
@@ -208,9 +220,6 @@ extern u64 ppc64_pft_size;		/* Log 2 of page table size */
 #define USER_REGION_ID     (0UL)
 #define REGION_ID(ea)	   (((unsigned long)(ea)) >> REGION_SHIFT)
 
-#define __bpn_to_ba(x) ((((unsigned long)(x)) << PAGE_SHIFT) + KERNELBASE)
-#define __ba_to_bpn(x) ((((unsigned long)(x)) & ~REGION_MASK) >> PAGE_SHIFT)
-
 #define __va(x) ((void *)((unsigned long)(x) + KERNELBASE))
 
 #ifdef CONFIG_DISCONTIGMEM
diff --git a/include/asm-ppc64/pgalloc.h b/include/asm-ppc64/pgalloc.h
index 4fc4b73..26bc49c 100644
--- a/include/asm-ppc64/pgalloc.h
+++ b/include/asm-ppc64/pgalloc.h
@@ -6,7 +6,12 @@
 #include <linux/cpumask.h>
 #include <linux/percpu.h>
 
-extern kmem_cache_t *zero_cache;
+extern kmem_cache_t *pgtable_cache[];
+
+#define PTE_CACHE_NUM	0
+#define PMD_CACHE_NUM	1
+#define PUD_CACHE_NUM	1
+#define PGD_CACHE_NUM	0
 
 /*
  * This program is free software; you can redistribute it and/or
@@ -15,30 +20,40 @@ extern kmem_cache_t *zero_cache;
  * 2 of the License, or (at your option) any later version.
  */
 
-static inline pgd_t *
-pgd_alloc(struct mm_struct *mm)
+static inline pgd_t *pgd_alloc(struct mm_struct *mm)
 {
-	return kmem_cache_alloc(zero_cache, GFP_KERNEL);
+	return kmem_cache_alloc(pgtable_cache[PGD_CACHE_NUM], GFP_KERNEL);
 }
 
-static inline void
-pgd_free(pgd_t *pgd)
+static inline void pgd_free(pgd_t *pgd)
 {
-	kmem_cache_free(zero_cache, pgd);
+	kmem_cache_free(pgtable_cache[PGD_CACHE_NUM], pgd);
+}
+
+#define pgd_populate(MM, PGD, PUD)	pgd_set(PGD, PUD)
+
+static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
+{
+	return kmem_cache_alloc(pgtable_cache[PUD_CACHE_NUM],
+				GFP_KERNEL|__GFP_REPEAT);
+}
+
+static inline void pud_free(pud_t *pud)
+{
+	kmem_cache_free(pgtable_cache[PUD_CACHE_NUM], pud);
 }
 
 #define pud_populate(MM, PUD, PMD)	pud_set(PUD, PMD)
 
-static inline pmd_t *
-pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
+static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
 {
-	return kmem_cache_alloc(zero_cache, GFP_KERNEL|__GFP_REPEAT);
+	return kmem_cache_alloc(pgtable_cache[PMD_CACHE_NUM],
+				GFP_KERNEL|__GFP_REPEAT);
 }
 
-static inline void
-pmd_free(pmd_t *pmd)
+static inline void pmd_free(pmd_t *pmd)
 {
-	kmem_cache_free(zero_cache, pmd);
+	kmem_cache_free(pgtable_cache[PMD_CACHE_NUM], pmd);
 }
 
 #define pmd_populate_kernel(mm, pmd, pte) pmd_set(pmd, pte)
@@ -47,44 +62,58 @@ pmd_free(pmd_t *pmd)
 
 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
 {
-	return kmem_cache_alloc(zero_cache, GFP_KERNEL|__GFP_REPEAT);
+	return kmem_cache_alloc(pgtable_cache[PTE_CACHE_NUM],
+				GFP_KERNEL|__GFP_REPEAT);
 }
 
 static inline struct page *pte_alloc_one(struct mm_struct *mm, unsigned long address)
 {
-	pte_t *pte = kmem_cache_alloc(zero_cache, GFP_KERNEL|__GFP_REPEAT);
-	if (pte)
-		return virt_to_page(pte);
-	return NULL;
+	return virt_to_page(pte_alloc_one_kernel(mm, address));
 }
 		
 static inline void pte_free_kernel(pte_t *pte)
 {
-	kmem_cache_free(zero_cache, pte);
+	kmem_cache_free(pgtable_cache[PTE_CACHE_NUM], pte);
 }
 
 static inline void pte_free(struct page *ptepage)
 {
-	kmem_cache_free(zero_cache, page_address(ptepage));
+	pte_free_kernel(page_address(ptepage));
 }
 
-struct pte_freelist_batch
+#define PGF_CACHENUM_MASK	0xf
+
+typedef struct pgtable_free {
+	unsigned long val;
+} pgtable_free_t;
+
+static inline pgtable_free_t pgtable_free_cache(void *p, int cachenum,
+						unsigned long mask)
 {
-	struct rcu_head	rcu;
-	unsigned int	index;
-	struct page *	pages[0];
-};
+	BUG_ON(cachenum > PGF_CACHENUM_MASK);
 
-#define PTE_FREELIST_SIZE	((PAGE_SIZE - sizeof(struct pte_freelist_batch)) / \
-				  sizeof(struct page *))
+	return (pgtable_free_t){.val = ((unsigned long) p & ~mask) | cachenum};
+}
 
-extern void pte_free_now(struct page *ptepage);
-extern void pte_free_submit(struct pte_freelist_batch *batch);
+static inline void pgtable_free(pgtable_free_t pgf)
+{
+	void *p = (void *)(pgf.val & ~PGF_CACHENUM_MASK);
+	int cachenum = pgf.val & PGF_CACHENUM_MASK;
 
-DECLARE_PER_CPU(struct pte_freelist_batch *, pte_freelist_cur);
+	kmem_cache_free(pgtable_cache[cachenum], p);
+}
 
-void __pte_free_tlb(struct mmu_gather *tlb, struct page *ptepage);
-#define __pmd_free_tlb(tlb, pmd)	__pte_free_tlb(tlb, virt_to_page(pmd))
+void pgtable_free_tlb(struct mmu_gather *tlb, pgtable_free_t pgf);
+
+#define __pte_free_tlb(tlb, ptepage)	\
+	pgtable_free_tlb(tlb, pgtable_free_cache(page_address(ptepage), \
+		PTE_CACHE_NUM, PTE_TABLE_SIZE-1))
+#define __pmd_free_tlb(tlb, pmd) 	\
+	pgtable_free_tlb(tlb, pgtable_free_cache(pmd, \
+		PMD_CACHE_NUM, PMD_TABLE_SIZE-1))
+#define __pud_free_tlb(tlb, pmd)	\
+	pgtable_free_tlb(tlb, pgtable_free_cache(pud, \
+		PUD_CACHE_NUM, PUD_TABLE_SIZE-1))
 
 #define check_pgt_cache()	do { } while (0)
 
diff --git a/include/asm-ppc64/pgtable.h b/include/asm-ppc64/pgtable.h
index 46cf61c..5ea952a 100644
--- a/include/asm-ppc64/pgtable.h
+++ b/include/asm-ppc64/pgtable.h
@@ -15,19 +15,24 @@
 #include <asm/tlbflush.h>
 #endif /* __ASSEMBLY__ */
 
-#include <asm-generic/pgtable-nopud.h>
-
 /*
  * Entries per page directory level.  The PTE level must use a 64b record
  * for each page table entry.  The PMD and PGD level use a 32b record for 
  * each entry by assuming that each entry is page aligned.
  */
 #define PTE_INDEX_SIZE  9
-#define PMD_INDEX_SIZE  10
-#define PGD_INDEX_SIZE  10
+#define PMD_INDEX_SIZE  7
+#define PUD_INDEX_SIZE  7
+#define PGD_INDEX_SIZE  9
+
+#define PTE_TABLE_SIZE	(sizeof(pte_t) << PTE_INDEX_SIZE)
+#define PMD_TABLE_SIZE	(sizeof(pmd_t) << PMD_INDEX_SIZE)
+#define PUD_TABLE_SIZE	(sizeof(pud_t) << PUD_INDEX_SIZE)
+#define PGD_TABLE_SIZE	(sizeof(pgd_t) << PGD_INDEX_SIZE)
 
 #define PTRS_PER_PTE	(1 << PTE_INDEX_SIZE)
 #define PTRS_PER_PMD	(1 << PMD_INDEX_SIZE)
+#define PTRS_PER_PUD	(1 << PMD_INDEX_SIZE)
 #define PTRS_PER_PGD	(1 << PGD_INDEX_SIZE)
 
 /* PMD_SHIFT determines what a second-level page table entry can map */
@@ -35,8 +40,13 @@
 #define PMD_SIZE	(1UL << PMD_SHIFT)
 #define PMD_MASK	(~(PMD_SIZE-1))
 
-/* PGDIR_SHIFT determines what a third-level page table entry can map */
-#define PGDIR_SHIFT	(PMD_SHIFT + PMD_INDEX_SIZE)
+/* PUD_SHIFT determines what a third-level page table entry can map */
+#define PUD_SHIFT	(PMD_SHIFT + PMD_INDEX_SIZE)
+#define PUD_SIZE	(1UL << PUD_SHIFT)
+#define PUD_MASK	(~(PUD_SIZE-1))
+
+/* PGDIR_SHIFT determines what a fourth-level page table entry can map */
+#define PGDIR_SHIFT	(PUD_SHIFT + PUD_INDEX_SIZE)
 #define PGDIR_SIZE	(1UL << PGDIR_SHIFT)
 #define PGDIR_MASK	(~(PGDIR_SIZE-1))
 
@@ -45,15 +55,23 @@
 /*
  * Size of EA range mapped by our pagetables.
  */
-#define EADDR_SIZE (PTE_INDEX_SIZE + PMD_INDEX_SIZE + \
-                    PGD_INDEX_SIZE + PAGE_SHIFT)
-#define EADDR_MASK ((1UL << EADDR_SIZE) - 1)
+#define PGTABLE_EADDR_SIZE (PTE_INDEX_SIZE + PMD_INDEX_SIZE + \
+                	    PUD_INDEX_SIZE + PGD_INDEX_SIZE + PAGE_SHIFT)
+#define PGTABLE_RANGE (1UL << PGTABLE_EADDR_SIZE)
+
+#if TASK_SIZE_USER64 > PGTABLE_RANGE
+#error TASK_SIZE_USER64 exceeds pagetable range
+#endif
+
+#if TASK_SIZE_USER64 > (1UL << (USER_ESID_BITS + SID_SHIFT))
+#error TASK_SIZE_USER64 exceeds user VSID range
+#endif
 
 /*
  * Define the address range of the vmalloc VM area.
  */
 #define VMALLOC_START (0xD000000000000000ul)
-#define VMALLOC_SIZE  (0x10000000000UL)
+#define VMALLOC_SIZE  (0x80000000000UL)
 #define VMALLOC_END   (VMALLOC_START + VMALLOC_SIZE)
 
 /*
@@ -154,8 +172,6 @@ extern unsigned long empty_zero_page[PAGE_SIZE/sizeof(unsigned long)];
 #ifndef __ASSEMBLY__
 int hash_huge_page(struct mm_struct *mm, unsigned long access,
 		   unsigned long ea, unsigned long vsid, int local);
-
-void hugetlb_mm_free_pgd(struct mm_struct *mm);
 #endif /* __ASSEMBLY__ */
 
 #define HAVE_ARCH_UNMAPPED_AREA
@@ -163,7 +179,6 @@ void hugetlb_mm_free_pgd(struct mm_struct *mm);
 #else
 
 #define hash_huge_page(mm,a,ea,vsid,local)	-1
-#define hugetlb_mm_free_pgd(mm)			do {} while (0)
 
 #endif
 
@@ -197,39 +212,45 @@ static inline pte_t pfn_pte(unsigned long pfn, pgprot_t pgprot)
 #define pte_pfn(x)		((unsigned long)((pte_val(x) >> PTE_SHIFT)))
 #define pte_page(x)		pfn_to_page(pte_pfn(x))
 
-#define pmd_set(pmdp, ptep) 	\
-	(pmd_val(*(pmdp)) = __ba_to_bpn(ptep))
+#define pmd_set(pmdp, ptep) 	({BUG_ON((u64)ptep < KERNELBASE); pmd_val(*(pmdp)) = (unsigned long)(ptep);})
 #define pmd_none(pmd)		(!pmd_val(pmd))
 #define	pmd_bad(pmd)		(pmd_val(pmd) == 0)
 #define	pmd_present(pmd)	(pmd_val(pmd) != 0)
 #define	pmd_clear(pmdp)		(pmd_val(*(pmdp)) = 0)
-#define pmd_page_kernel(pmd)	(__bpn_to_ba(pmd_val(pmd)))
+#define pmd_page_kernel(pmd)	(pmd_val(pmd))
 #define pmd_page(pmd)		virt_to_page(pmd_page_kernel(pmd))
 
-#define pud_set(pudp, pmdp)	(pud_val(*(pudp)) = (__ba_to_bpn(pmdp)))
+#define pud_set(pudp, pmdp)	(pud_val(*(pudp)) = (unsigned long)(pmdp))
 #define pud_none(pud)		(!pud_val(pud))
-#define pud_bad(pud)		((pud_val(pud)) == 0UL)
-#define pud_present(pud)	(pud_val(pud) != 0UL)
-#define pud_clear(pudp)		(pud_val(*(pudp)) = 0UL)
-#define pud_page(pud)		(__bpn_to_ba(pud_val(pud)))
+#define pud_bad(pud)		((pud_val(pud)) == 0)
+#define pud_present(pud)	(pud_val(pud) != 0)
+#define pud_clear(pudp)		(pud_val(*(pudp)) = 0)
+#define pud_page(pud)		(pud_val(pud))
+
+#define pgd_set(pgdp, pudp)	({pgd_val(*(pgdp)) = (unsigned long)(pudp);})
+#define pgd_none(pgd)		(!pgd_val(pgd))
+#define pgd_bad(pgd)		(pgd_val(pgd) == 0)
+#define pgd_present(pgd)	(pgd_val(pgd) != 0)
+#define pgd_clear(pgdp)		(pgd_val(*(pgdp)) = 0)
+#define pgd_page(pgd)		(pgd_val(pgd))
 
 /* 
  * Find an entry in a page-table-directory.  We combine the address region 
  * (the high order N bits) and the pgd portion of the address.
  */
 /* to avoid overflow in free_pgtables we don't use PTRS_PER_PGD here */
-#define pgd_index(address) (((address) >> (PGDIR_SHIFT)) & 0x7ff)
+#define pgd_index(address) (((address) >> (PGDIR_SHIFT)) & 0x1ff)
 
 #define pgd_offset(mm, address)	 ((mm)->pgd + pgd_index(address))
 
-/* Find an entry in the second-level page table.. */
+#define pud_offset(pgdp, addr)	\
+  (((pud_t *) pgd_page(*(pgdp))) + (((addr) >> PUD_SHIFT) & (PTRS_PER_PUD - 1)))
+
 #define pmd_offset(pudp,addr) \
-  ((pmd_t *) pud_page(*(pudp)) + (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1)))
+  (((pmd_t *) pud_page(*(pudp))) + (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1)))
 
-/* Find an entry in the third-level page table.. */
 #define pte_offset_kernel(dir,addr) \
-  ((pte_t *) pmd_page_kernel(*(dir)) \
- + (((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)))
+  (((pte_t *) pmd_page_kernel(*(dir))) + (((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)))
 
 #define pte_offset_map(dir,addr)	pte_offset_kernel((dir), (addr))
 #define pte_offset_map_nested(dir,addr)	pte_offset_kernel((dir), (addr))
@@ -458,23 +479,18 @@ extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long addr,
 #define pte_same(A,B)	(((pte_val(A) ^ pte_val(B)) & ~_PAGE_HPTEFLAGS) == 0)
 
 #define pmd_ERROR(e) \
-	printk("%s:%d: bad pmd %08x.\n", __FILE__, __LINE__, pmd_val(e))
+	printk("%s:%d: bad pmd %08lx.\n", __FILE__, __LINE__, pmd_val(e))
+#define pud_ERROR(e) \
+	printk("%s:%d: bad pmd %08lx.\n", __FILE__, __LINE__, pud_val(e))
 #define pgd_ERROR(e) \
-	printk("%s:%d: bad pgd %08x.\n", __FILE__, __LINE__, pgd_val(e))
+	printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e))
 
 extern pgd_t swapper_pg_dir[];
 
 extern void paging_init(void);
 
-/*
- * Because the huge pgtables are only 2 level, they can take
- * at most around 4M, much less than one hugepage which the
- * process is presumably entitled to use.  So we don't bother
- * freeing up the pagetables on unmap, and wait until
- * destroy_context() to clean up the lot.
- */
 #define hugetlb_free_pgd_range(tlb, addr, end, floor, ceiling) \
-						do { } while (0)
+	free_pgd_range(tlb, addr, end, floor, ceiling)
 
 /*
  * This gets called at the end of handling a page fault, when
diff --git a/include/asm-ppc64/pmc.h b/include/asm-ppc64/pmc.h
index c924748..d1d297d 100644
--- a/include/asm-ppc64/pmc.h
+++ b/include/asm-ppc64/pmc.h
@@ -26,4 +26,6 @@ typedef void (*perf_irq_t)(struct pt_regs *);
 int reserve_pmc_hardware(perf_irq_t new_perf_irq);
 void release_pmc_hardware(void);
 
+void power4_enable_pmcs(void);
+
 #endif /* _PPC64_PMC_H */
diff --git a/include/asm-ppc64/processor.h b/include/asm-ppc64/processor.h
index 352306c..50b14c0 100644
--- a/include/asm-ppc64/processor.h
+++ b/include/asm-ppc64/processor.h
@@ -382,8 +382,8 @@ extern long kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
 extern struct task_struct *last_task_used_math;
 extern struct task_struct *last_task_used_altivec;
 
-/* 64-bit user address space is 41-bits (2TBs user VM) */
-#define TASK_SIZE_USER64 (0x0000020000000000UL)
+/* 64-bit user address space is 44-bits (16TB user VM) */
+#define TASK_SIZE_USER64 (0x0000100000000000UL)
 
 /* 
  * 32-bit user address space is 4GB - 1 page 
diff --git a/include/asm-ppc64/prom.h b/include/asm-ppc64/prom.h
index 04b1a84..dc5330b 100644
--- a/include/asm-ppc64/prom.h
+++ b/include/asm-ppc64/prom.h
@@ -22,13 +22,15 @@
 #define RELOC(x)        (*PTRRELOC(&(x)))
 
 /* Definitions used by the flattened device tree */
-#define OF_DT_HEADER		0xd00dfeed	/* 4: version, 4: total size */
-#define OF_DT_BEGIN_NODE	0x1		/* Start node: full name */
+#define OF_DT_HEADER		0xd00dfeed	/* marker */
+#define OF_DT_BEGIN_NODE	0x1		/* Start of node, full name */
 #define OF_DT_END_NODE		0x2		/* End node */
-#define OF_DT_PROP		0x3		/* Property: name off, size, content */
+#define OF_DT_PROP		0x3		/* Property: name off, size,
+						 * content */
+#define OF_DT_NOP		0x4		/* nop */
 #define OF_DT_END		0x9
 
-#define OF_DT_VERSION		1
+#define OF_DT_VERSION		0x10
 
 /*
  * This is what gets passed to the kernel by prom_init or kexec
@@ -54,7 +56,9 @@ struct boot_param_header
 	u32	version;		/* format version */
 	u32	last_comp_version;	/* last compatible version */
 	/* version 2 fields below */
-	u32	boot_cpuid_phys;	/* Which physical CPU id we're booting on */
+	u32	boot_cpuid_phys;	/* Physical CPU id we're booting on */
+	/* version 3 fields below */
+	u32	dt_strings_size;	/* size of the DT strings block */
 };
 
 
diff --git a/include/asm-ppc64/system.h b/include/asm-ppc64/system.h
index 98d120c..b9e1835 100644
--- a/include/asm-ppc64/system.h
+++ b/include/asm-ppc64/system.h
@@ -88,7 +88,7 @@ DEBUGGER_BOILERPLATE(debugger_dabr_match)
 DEBUGGER_BOILERPLATE(debugger_fault_handler)
 
 #ifdef CONFIG_XMON
-extern void xmon_init(void);
+extern void xmon_init(int enable);
 #endif
 
 #else
@@ -302,5 +302,7 @@ __cmpxchg(volatile void *ptr, unsigned long old, unsigned long new, int size)
 
 #define arch_align_stack(x) (x)
 
+extern unsigned long reloc_offset(void);
+
 #endif /* __KERNEL__ */
 #endif
diff --git a/include/asm-ppc64/vio.h b/include/asm-ppc64/vio.h
index 20cd98e..a82e87c 100644
--- a/include/asm-ppc64/vio.h
+++ b/include/asm-ppc64/vio.h
@@ -56,6 +56,9 @@ const void * vio_get_attribute(struct vio_dev *vdev, void* which, int* length);
 int vio_get_irq(struct vio_dev *dev);
 int vio_enable_interrupts(struct vio_dev *dev);
 int vio_disable_interrupts(struct vio_dev *dev);
+extern struct vio_dev * __devinit vio_register_device_common(
+		struct vio_dev *viodev, char *name, char *type,
+		uint32_t unit_address, struct iommu_table *iommu_table);
 
 extern struct dma_mapping_ops vio_dma_ops;
 
@@ -95,9 +98,16 @@ struct vio_dev {
 	struct device dev;
 };
 
+extern struct vio_dev vio_bus_device;
+
 static inline struct vio_dev *to_vio_dev(struct device *dev)
 {
 	return container_of(dev, struct vio_dev, dev);
 }
 
+extern int vio_bus_init(int (*is_match)(const struct vio_device_id *id,
+			const struct vio_dev *dev),
+		void (*)(struct vio_dev *),
+		void (*)(struct device *));
+
 #endif /* _ASM_VIO_H */