1 files changed, 72 insertions, 194 deletions

diff --git a/include/asm-sparc64/pgtable.h b/include/asm-sparc64/pgtable.h
index a480007f0a9d..bd8bce704a9f 100644
--- a/include/asm-sparc64/pgtable.h
+++ b/include/asm-sparc64/pgtable.h
@@ -90,134 +90,48 @@
 
 #endif /* !(__ASSEMBLY__) */
 
-/* Spitfire/Cheetah TTE bits. */
-#define _PAGE_VALID     _AC(0x8000000000000000,UL) /* Valid TTE              */
-#define _PAGE_R         _AC(0x8000000000000000,UL) /* Keep ref bit up to date*/
-#define _PAGE_SZ4MB     _AC(0x6000000000000000,UL) /* 4MB Page               */
-#define _PAGE_SZ512K    _AC(0x4000000000000000,UL) /* 512K Page              */
-#define _PAGE_SZ64K     _AC(0x2000000000000000,UL) /* 64K Page               */
-#define _PAGE_SZ8K      _AC(0x0000000000000000,UL) /* 8K Page                */
-#define _PAGE_NFO       _AC(0x1000000000000000,UL) /* No Fault Only          */
-#define _PAGE_IE        _AC(0x0800000000000000,UL) /* Invert Endianness      */
-#define _PAGE_SOFT2     _AC(0x07FC000000000000,UL) /* Software bits, set 2   */
-#define _PAGE_RES1      _AC(0x0002000000000000,UL) /* Reserved               */
-#define _PAGE_SZ32MB    _AC(0x0001000000000000,UL) /* (Panther) 32MB page    */
-#define _PAGE_SZ256MB   _AC(0x2001000000000000,UL) /* (Panther) 256MB page   */
-#define _PAGE_SN        _AC(0x0000800000000000,UL) /* (Cheetah) Snoop        */
-#define _PAGE_RES2      _AC(0x0000780000000000,UL) /* Reserved               */
-#define _PAGE_PADDR_SF  _AC(0x000001FFFFFFE000,UL) /* (Spitfire) paddr[40:13]*/
-#define _PAGE_PADDR     _AC(0x000007FFFFFFE000,UL) /* (Cheetah) paddr[42:13] */
-#define _PAGE_SOFT      _AC(0x0000000000001F80,UL) /* Software bits          */
-#define _PAGE_L         _AC(0x0000000000000040,UL) /* Locked TTE             */
-#define _PAGE_CP        _AC(0x0000000000000020,UL) /* Cacheable in P-Cache   */
-#define _PAGE_CV        _AC(0x0000000000000010,UL) /* Cacheable in V-Cache   */
-#define _PAGE_E         _AC(0x0000000000000008,UL) /* side-Effect            */
-#define _PAGE_P         _AC(0x0000000000000004,UL) /* Privileged Page        */
-#define _PAGE_W         _AC(0x0000000000000002,UL) /* Writable               */
-#define _PAGE_G         _AC(0x0000000000000001,UL) /* Global                 */
-
-#define _PAGE_ALL_SZ_BITS       \
-        (_PAGE_SZ4MB | _PAGE_SZ512K | _PAGE_SZ64K | \
-         _PAGE_SZ8K  | _PAGE_SZ32MB | _PAGE_SZ256MB)
-
-/* Here are the SpitFire software bits we use in the TTE's.
- *
- * WARNING: If you are going to try and start using some
- *          of the soft2 bits, you will need to make
- *          modifications to the swap entry implementation.
- *          For example, one thing that could happen is that
- *          swp_entry_to_pte() would BUG_ON() if you tried
- *          to use one of the soft2 bits for _PAGE_FILE.
- *
- * Like other architectures, I have aliased _PAGE_FILE with
- * _PAGE_MODIFIED.  This works because _PAGE_FILE is never
- * interpreted that way unless _PAGE_PRESENT is clear.
- */
-#define _PAGE_EXEC      _AC(0x0000000000001000,UL)      /* Executable SW bit */
-#define _PAGE_MODIFIED  _AC(0x0000000000000800,UL)      /* Modified (dirty)  */
-#define _PAGE_FILE      _AC(0x0000000000000800,UL)      /* Pagecache page    */
-#define _PAGE_ACCESSED  _AC(0x0000000000000400,UL)      /* Accessed (ref'd)  */
-#define _PAGE_READ      _AC(0x0000000000000200,UL)      /* Readable SW Bit   */
-#define _PAGE_WRITE     _AC(0x0000000000000100,UL)      /* Writable SW Bit   */
-#define _PAGE_PRESENT   _AC(0x0000000000000080,UL)      /* Present           */
-
-#if PAGE_SHIFT == 13
-#define _PAGE_SZBITS    _PAGE_SZ8K
-#elif PAGE_SHIFT == 16
-#define _PAGE_SZBITS    _PAGE_SZ64K
-#elif PAGE_SHIFT == 19
-#define _PAGE_SZBITS    _PAGE_SZ512K
-#elif PAGE_SHIFT == 22
-#define _PAGE_SZBITS    _PAGE_SZ4MB
-#else
-#error Wrong PAGE_SHIFT specified
-#endif
-
-#if defined(CONFIG_HUGETLB_PAGE_SIZE_4MB)
-#define _PAGE_SZHUGE    _PAGE_SZ4MB
-#elif defined(CONFIG_HUGETLB_PAGE_SIZE_512K)
-#define _PAGE_SZHUGE    _PAGE_SZ512K
-#elif defined(CONFIG_HUGETLB_PAGE_SIZE_64K)
-#define _PAGE_SZHUGE    _PAGE_SZ64K
-#endif
-
-#define _PAGE_CACHE     (_PAGE_CP | _PAGE_CV)
-
-#define __DIRTY_BITS    (_PAGE_MODIFIED | _PAGE_WRITE | _PAGE_W)
-#define __ACCESS_BITS   (_PAGE_ACCESSED | _PAGE_READ | _PAGE_R)
-#define __PRIV_BITS     _PAGE_P
-
-#define PAGE_NONE       __pgprot (_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_CACHE)
-
-/* Don't set the TTE _PAGE_W bit here, else the dirty bit never gets set. */
-#define PAGE_SHARED     __pgprot (_PAGE_PRESENT | _PAGE_VALID | _PAGE_CACHE | \
-                                  __ACCESS_BITS | _PAGE_WRITE | _PAGE_EXEC)
-
-#define PAGE_COPY       __pgprot (_PAGE_PRESENT | _PAGE_VALID | _PAGE_CACHE | \
-                                  __ACCESS_BITS | _PAGE_EXEC)
-
-#define PAGE_READONLY   __pgprot (_PAGE_PRESENT | _PAGE_VALID | _PAGE_CACHE | \
-                                  __ACCESS_BITS | _PAGE_EXEC)
-
-#define PAGE_KERNEL     __pgprot (_PAGE_PRESENT | _PAGE_VALID | _PAGE_CACHE | \
-                                  __PRIV_BITS | \
-                                  __ACCESS_BITS | __DIRTY_BITS | _PAGE_EXEC)
-
-#define PAGE_SHARED_NOEXEC      __pgprot (_PAGE_PRESENT | _PAGE_VALID | \
-                                          _PAGE_CACHE | \
-                                          __ACCESS_BITS | _PAGE_WRITE)
-
-#define PAGE_COPY_NOEXEC        __pgprot (_PAGE_PRESENT | _PAGE_VALID | \
-                                          _PAGE_CACHE | __ACCESS_BITS)
-
-#define PAGE_READONLY_NOEXEC    __pgprot (_PAGE_PRESENT | _PAGE_VALID | \
-                                          _PAGE_CACHE | __ACCESS_BITS)
-
-#define _PFN_MASK       _PAGE_PADDR
-
-#define pg_iobits (_PAGE_VALID | _PAGE_PRESENT | __DIRTY_BITS | \
-                   __ACCESS_BITS | _PAGE_E)
-
-#define __P000  PAGE_NONE
-#define __P001  PAGE_READONLY_NOEXEC
-#define __P010  PAGE_COPY_NOEXEC
-#define __P011  PAGE_COPY_NOEXEC
-#define __P100  PAGE_READONLY
-#define __P101  PAGE_READONLY
-#define __P110  PAGE_COPY
-#define __P111  PAGE_COPY
-
-#define __S000  PAGE_NONE
-#define __S001  PAGE_READONLY_NOEXEC
-#define __S010  PAGE_SHARED_NOEXEC
-#define __S011  PAGE_SHARED_NOEXEC
-#define __S100  PAGE_READONLY
-#define __S101  PAGE_READONLY
-#define __S110  PAGE_SHARED
-#define __S111  PAGE_SHARED
+/* PTE bits which are the same in SUN4U and SUN4V format.  */
+#define _PAGE_VALID     0x8000000000000000 /* Valid TTE              */
+#define _PAGE_R         0x8000000000000000 /* Keep ref bit up to date*/
+
+/* These are actually filled in at boot time by sun4{u,v}_pgprot_init() */
+#define __P000  __pgprot(0)
+#define __P001  __pgprot(0)
+#define __P010  __pgprot(0)
+#define __P011  __pgprot(0)
+#define __P100  __pgprot(0)
+#define __P101  __pgprot(0)
+#define __P110  __pgprot(0)
+#define __P111  __pgprot(0)
+
+#define __S000  __pgprot(0)
+#define __S001  __pgprot(0)
+#define __S010  __pgprot(0)
+#define __S011  __pgprot(0)
+#define __S100  __pgprot(0)
+#define __S101  __pgprot(0)
+#define __S110  __pgprot(0)
+#define __S111  __pgprot(0)
 
 #ifndef __ASSEMBLY__
 
+extern pte_t mk_pte_io(unsigned long, pgprot_t, int, unsigned long);
+
+extern unsigned long pte_sz_bits(unsigned long size);
+
+extern pgprot_t PAGE_KERNEL;
+extern pgprot_t PAGE_KERNEL_LOCKED;
+extern pgprot_t PAGE_COPY;
+
+/* XXX This uglyness is for the atyfb driver's sparc mmap() support. XXX */
+extern unsigned long _PAGE_IE;
+extern unsigned long _PAGE_E;
+extern unsigned long _PAGE_CACHE;
+
+extern unsigned long pg_iobits;
+extern unsigned long _PAGE_ALL_SZ_BITS;
+extern unsigned long _PAGE_SZBITS;
+
 extern unsigned long phys_base;
 extern unsigned long pfn_base;
 
@@ -229,27 +143,12 @@ extern struct page *mem_map_zero;
  * the first physical page in the machine is at some huge physical address,
  * such as 4GB.   This is common on a partitioned E10000, for example.
  */
-
-#define pfn_pte(pfn, prot)      \
-        __pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot) | _PAGE_SZBITS)
+extern pte_t pfn_pte(unsigned long, pgprot_t);
 #define mk_pte(page, pgprot)    pfn_pte(page_to_pfn(page), (pgprot))
+extern unsigned long pte_pfn(pte_t);
+#define pte_page(x) pfn_to_page(pte_pfn(x))
+extern pte_t pte_modify(pte_t, pgprot_t);
 
-#define pte_pfn(x)              ((pte_val(x) & _PAGE_PADDR)>>PAGE_SHIFT)
-#define pte_page(x)             pfn_to_page(pte_pfn(x))
-
-static inline pte_t pte_modify(pte_t orig_pte, pgprot_t new_prot)
-{
-        pte_t __pte;
-        const unsigned long preserve_mask = (_PFN_MASK |
-                                             _PAGE_MODIFIED | _PAGE_ACCESSED |
-                                             _PAGE_CACHE | _PAGE_E |
-                                             _PAGE_PRESENT | _PAGE_SZBITS);
-
-        pte_val(__pte) = (pte_val(orig_pte) & preserve_mask) |
-                (pgprot_val(new_prot) & ~preserve_mask);
-
-        return __pte;
-}
 #define pmd_set(pmdp, ptep)     \
         (pmd_val(*(pmdp)) = (__pa((unsigned long) (ptep)) >> 11UL))
 #define pud_set(pudp, pmdp)     \
@@ -259,8 +158,6 @@ static inline pte_t pte_modify(pte_t orig_pte, pgprot_t new_prot)
 #define pmd_page(pmd)                   virt_to_page((void *)__pmd_page(pmd))
 #define pud_page(pud)           \
         ((unsigned long) __va((((unsigned long)pud_val(pud))<<11UL)))
-#define pte_none(pte)                   (!pte_val(pte))
-#define pte_present(pte)                (pte_val(pte) & _PAGE_PRESENT)
 #define pmd_none(pmd)                   (!pmd_val(pmd))
 #define pmd_bad(pmd)                    (0)
 #define pmd_present(pmd)                (pmd_val(pmd) != 0U)
@@ -270,30 +167,29 @@ static inline pte_t pte_modify(pte_t orig_pte, pgprot_t new_prot)
 #define pud_present(pud)                (pud_val(pud) != 0U)
 #define pud_clear(pudp)                 (pud_val(*(pudp)) = 0U)
 
+/* Same in both SUN4V and SUN4U.  */
+#define pte_none(pte)                   (!pte_val(pte))
+
+extern unsigned long pte_present(pte_t);
+
 /* The following only work if pte_present() is true.
  * Undefined behaviour if not..
  */
-#define pte_read(pte)           (pte_val(pte) & _PAGE_READ)
-#define pte_exec(pte)           (pte_val(pte) & _PAGE_EXEC)
-#define pte_write(pte)          (pte_val(pte) & _PAGE_WRITE)
-#define pte_dirty(pte)          (pte_val(pte) & _PAGE_MODIFIED)
-#define pte_young(pte)          (pte_val(pte) & _PAGE_ACCESSED)
-#define pte_wrprotect(pte)      (__pte(pte_val(pte) & ~(_PAGE_WRITE|_PAGE_W)))
-#define pte_rdprotect(pte)      \
-        (__pte(((pte_val(pte)<<1UL)>>1UL) & ~_PAGE_READ))
-#define pte_mkclean(pte)        \
-        (__pte(pte_val(pte) & ~(_PAGE_MODIFIED|_PAGE_W)))
-#define pte_mkold(pte)          \
-        (__pte(((pte_val(pte)<<1UL)>>1UL) & ~_PAGE_ACCESSED))
-
-/* Permanent address of a page. */
-#define __page_address(page)    page_address(page)
+extern unsigned long pte_read(pte_t);
+extern unsigned long pte_exec(pte_t);
+extern unsigned long pte_write(pte_t);
+extern unsigned long pte_dirty(pte_t);
+extern unsigned long pte_young(pte_t);
+extern pte_t pte_wrprotect(pte_t);
+extern pte_t pte_rdprotect(pte_t);
+extern pte_t pte_mkclean(pte_t);
+extern pte_t pte_mkold(pte_t);
 
 /* Be very careful when you change these three, they are delicate. */
-#define pte_mkyoung(pte)        (__pte(pte_val(pte) | _PAGE_ACCESSED | _PAGE_R))
-#define pte_mkwrite(pte)        (__pte(pte_val(pte) | _PAGE_WRITE))
-#define pte_mkdirty(pte)        (__pte(pte_val(pte) | _PAGE_MODIFIED | _PAGE_W))
-#define pte_mkhuge(pte)         (__pte(pte_val(pte) | _PAGE_SZHUGE))
+extern pte_t pte_mkyoung(pte_t);
+extern pte_t pte_mkwrite(pte_t);
+extern pte_t pte_mkdirty(pte_t);
+extern pte_t pte_mkhuge(pte_t);
 
 /* to find an entry in a page-table-directory. */
 #define pgd_index(address)      (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1))
@@ -328,6 +224,9 @@ static inline void set_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *p
 
         /* It is more efficient to let flush_tlb_kernel_range()
          * handle init_mm tlb flushes.
+         *
+         * SUN4V NOTE: _PAGE_VALID is the same value in both the SUN4U
+         *             and SUN4V pte layout, so this inline test is fine.
          */
         if (likely(mm != &init_mm) && (pte_val(orig) & _PAGE_VALID))
                 tlb_batch_add(mm, addr, ptep, orig);
@@ -362,42 +261,23 @@ extern void update_mmu_cache(struct vm_area_struct *, unsigned long, pte_t);
 #define __swp_entry_to_pte(x)           ((pte_t) { (x).val })
 
 /* File offset in PTE support. */
-#define pte_file(pte)           (pte_val(pte) & _PAGE_FILE)
+extern unsigned long pte_file(pte_t);
 #define pte_to_pgoff(pte)       (pte_val(pte) >> PAGE_SHIFT)
-#define pgoff_to_pte(off)       (__pte(((off) << PAGE_SHIFT) | _PAGE_FILE))
+extern pte_t pgoff_to_pte(unsigned long);
 #define PTE_FILE_MAX_BITS       (64UL - PAGE_SHIFT - 1UL)
 
 extern unsigned long prom_virt_to_phys(unsigned long, int *);
 
-static __inline__ unsigned long
-sun4u_get_pte (unsigned long addr)
-{
-        pgd_t *pgdp;
-        pud_t *pudp;
-        pmd_t *pmdp;
-        pte_t *ptep;
-
-        if (addr >= PAGE_OFFSET)
-                return addr & _PAGE_PADDR;
-        if ((addr >= LOW_OBP_ADDRESS) && (addr < HI_OBP_ADDRESS))
-                return prom_virt_to_phys(addr, NULL);
-        pgdp = pgd_offset_k(addr);
-        pudp = pud_offset(pgdp, addr);
-        pmdp = pmd_offset(pudp, addr);
-        ptep = pte_offset_kernel(pmdp, addr);
-        return pte_val(*ptep) & _PAGE_PADDR;
-}
+extern unsigned long sun4u_get_pte(unsigned long);
 
-static __inline__ unsigned long
-__get_phys (unsigned long addr)
+static inline unsigned long __get_phys(unsigned long addr)
 {
-        return sun4u_get_pte (addr);
+        return sun4u_get_pte(addr);
 }
 
-static __inline__ int
-__get_iospace (unsigned long addr)
+static inline int __get_iospace(unsigned long addr)
 {
-        return ((sun4u_get_pte (addr) & 0xf0000000) >> 28);
+        return ((sun4u_get_pte(addr) & 0xf0000000) >> 28);
 }
 
 extern unsigned long *sparc64_valid_addr_bitmap;
@@ -411,9 +291,7 @@ extern int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from,
                                unsigned long size, pgprot_t prot);
 
 /* Clear virtual and physical cachability, set side-effect bit.  */
-#define pgprot_noncached(prot) \
-        (__pgprot((pgprot_val(prot) & ~(_PAGE_CP | _PAGE_CV)) | \
-         _PAGE_E))
+extern pgprot_t pgprot_noncached(pgprot_t);
 
 /*
  * For sparc32&64, the pfn in io_remap_pfn_range() carries <iospace> in