1 files changed, 15 insertions, 35 deletions

diff --git a/include/asm-powerpc/pgtable-ppc64.h b/include/asm-powerpc/pgtable-ppc64.h
index 0c879121c8fc..7ca8b5c10019 100644
--- a/include/asm-powerpc/pgtable-ppc64.h
+++ b/include/asm-powerpc/pgtable-ppc64.h
@@ -7,11 +7,7 @@
 
 #ifndef __ASSEMBLY__
 #include <linux/stddef.h>
-#include <asm/processor.h>              /* For TASK_SIZE */
-#include <asm/mmu.h>
-#include <asm/page.h>
 #include <asm/tlbflush.h>
-struct mm_struct;
 #endif /* __ASSEMBLY__ */
 
 #ifdef CONFIG_PPC_64K_PAGES
@@ -27,7 +23,7 @@ struct mm_struct;
  */
 #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)
+#define PGTABLE_RANGE (ASM_CONST(1) << PGTABLE_EADDR_SIZE)
 
 #if TASK_SIZE_USER64 > PGTABLE_RANGE
 #error TASK_SIZE_USER64 exceeds pagetable range
@@ -37,19 +33,28 @@ struct mm_struct;
 #error TASK_SIZE_USER64 exceeds user VSID range
 #endif
 
+
 /*
  * Define the address range of the vmalloc VM area.
  */
 #define VMALLOC_START ASM_CONST(0xD000000000000000)
-#define VMALLOC_SIZE  ASM_CONST(0x80000000000)
+#define VMALLOC_SIZE  (PGTABLE_RANGE >> 1)
 #define VMALLOC_END   (VMALLOC_START + VMALLOC_SIZE)
 
 /*
- * Define the address range of the imalloc VM area.
+ * Define the address ranges for MMIO and IO space :
+ *
+ *  ISA_IO_BASE = VMALLOC_END, 64K reserved area
+ *  PHB_IO_BASE = ISA_IO_BASE + 64K to ISA_IO_BASE + 2G, PHB IO spaces
+ * IOREMAP_BASE = ISA_IO_BASE + 2G to VMALLOC_START + PGTABLE_RANGE
  */
-#define PHBS_IO_BASE    VMALLOC_END
-#define IMALLOC_BASE    (PHBS_IO_BASE + 0x80000000ul)   /* Reserve 2 gigs for PHBs */
-#define IMALLOC_END     (VMALLOC_START + PGTABLE_RANGE)
+#define FULL_IO_SIZE    0x80000000ul
+#define  ISA_IO_BASE    (VMALLOC_END)
+#define  ISA_IO_END     (VMALLOC_END + 0x10000ul)
+#define  PHB_IO_BASE    (ISA_IO_END)
+#define  PHB_IO_END     (VMALLOC_END + FULL_IO_SIZE)
+#define IOREMAP_BASE    (PHB_IO_END)
+#define IOREMAP_END     (VMALLOC_START + PGTABLE_RANGE)
 
 /*
  * Region IDs
@@ -134,16 +139,6 @@ struct mm_struct;
 #define __S110  PAGE_SHARED_X
 #define __S111  PAGE_SHARED_X
 
-#ifndef __ASSEMBLY__
-
-/*
- * ZERO_PAGE is a global shared page that is always zero: used
- * for zero-mapped memory areas etc..
- */
-extern unsigned long empty_zero_page[PAGE_SIZE/sizeof(unsigned long)];
-#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
-#endif /* __ASSEMBLY__ */
-
 #ifdef CONFIG_HUGETLB_PAGE
 
 #define HAVE_ARCH_UNMAPPED_AREA
@@ -432,10 +427,6 @@ extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
 #define pgd_ERROR(e) \
         printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e))
 
-extern pgd_t swapper_pg_dir[];
-
-extern void paging_init(void);
-
 /* Encode and de-code a swap entry */
 #define __swp_type(entry)       (((entry).val >> 1) & 0x3f)
 #define __swp_offset(entry)     ((entry).val >> 8)
@@ -446,17 +437,6 @@ extern void paging_init(void);
 #define pgoff_to_pte(off)       ((pte_t) {((off) << PTE_RPN_SHIFT)|_PAGE_FILE})
 #define PTE_FILE_MAX_BITS       (BITS_PER_LONG - PTE_RPN_SHIFT)
 
-/*
- * kern_addr_valid is intended to indicate whether an address is a valid
- * kernel address.  Most 32-bit archs define it as always true (like this)
- * but most 64-bit archs actually perform a test.  What should we do here?
- * The only use is in fs/ncpfs/dir.c
- */
-#define kern_addr_valid(addr)   (1)
-
-#define io_remap_pfn_range(vma, vaddr, pfn, size, prot)         \
-                remap_pfn_range(vma, vaddr, pfn, size, prot)
-
 void pgtable_cache_init(void);
 
 /*