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      1 /****************************************************************************
      2  ****************************************************************************
      3  ***
      4  ***   This header was automatically generated from a Linux kernel header
      5  ***   of the same name, to make information necessary for userspace to
      6  ***   call into the kernel available to libc.  It contains only constants,
      7  ***   structures, and macros generated from the original header, and thus,
      8  ***   contains no copyrightable information.
      9  ***
     10  ****************************************************************************
     11  ****************************************************************************/
     12 #ifndef __ASM_SH_PGTABLE_H
     13 #define __ASM_SH_PGTABLE_H
     14 
     15 #include <asm-generic/pgtable-nopmd.h>
     16 #include <asm/page.h>
     17 
     18 #ifndef __ASSEMBLY__
     19 #include <asm/addrspace.h>
     20 #include <asm/fixmap.h>
     21 
     22 #define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
     23 
     24 #endif
     25 
     26 #define NEFF 32
     27 #define NEFF_SIGN (1LL << (NEFF - 1))
     28 #define NEFF_MASK (-1LL << NEFF)
     29 
     30 #define NPHYS 29
     31 
     32 #define NPHYS_SIGN (1LL << (NPHYS - 1))
     33 #define NPHYS_MASK (-1LL << NPHYS)
     34 
     35 #define PTE_MAGNITUDE 2
     36 #define PTE_SHIFT PAGE_SHIFT
     37 #define PTE_BITS (PTE_SHIFT - PTE_MAGNITUDE)
     38 
     39 #define PGDIR_SHIFT (PTE_SHIFT + PTE_BITS)
     40 #define PGDIR_SIZE (1UL << PGDIR_SHIFT)
     41 #define PGDIR_MASK (~(PGDIR_SIZE-1))
     42 
     43 #define PTRS_PER_PTE (PAGE_SIZE / (1 << PTE_MAGNITUDE))
     44 #define PTRS_PER_PGD (PAGE_SIZE / sizeof(pgd_t))
     45 
     46 #define USER_PTRS_PER_PGD (TASK_SIZE/PGDIR_SIZE)
     47 #define FIRST_USER_ADDRESS 0
     48 
     49 #define PHYS_ADDR_MASK 0x1fffffff
     50 
     51 #define PTE_PHYS_MASK (PHYS_ADDR_MASK & PAGE_MASK)
     52 
     53 #define VMALLOC_START (P3SEG)
     54 #define VMALLOC_END (FIXADDR_START-2*PAGE_SIZE)
     55 
     56 #include <asm/pgtable_32.h>
     57 
     58 #define __P000 PAGE_NONE
     59 #define __P001 PAGE_READONLY
     60 #define __P010 PAGE_COPY
     61 #define __P011 PAGE_COPY
     62 #define __P100 PAGE_EXECREAD
     63 #define __P101 PAGE_EXECREAD
     64 #define __P110 PAGE_COPY
     65 #define __P111 PAGE_COPY
     66 
     67 #define __S000 PAGE_NONE
     68 #define __S001 PAGE_READONLY
     69 #define __S010 PAGE_WRITEONLY
     70 #define __S011 PAGE_SHARED
     71 #define __S100 PAGE_EXECREAD
     72 #define __S101 PAGE_EXECREAD
     73 #define __S110 PAGE_RWX
     74 #define __S111 PAGE_RWX
     75 
     76 typedef pte_t *pte_addr_t;
     77 
     78 #define kern_addr_valid(addr) (1)
     79 
     80 #define io_remap_pfn_range(vma, vaddr, pfn, size, prot)   remap_pfn_range(vma, vaddr, pfn, size, prot)
     81 
     82 #define pte_pfn(x) ((unsigned long)(((x).pte_low >> PAGE_SHIFT)))
     83 
     84 #define pgtable_cache_init() do { } while (0)
     85 
     86 struct mm_struct;
     87 #define __HAVE_ARCH_PTEP_GET_AND_CLEAR
     88 
     89 struct vm_area_struct;
     90 
     91 #include <asm-generic/pgtable.h>
     92 
     93 #endif
     94