include/asm-arm/cpu-multi32.h

   1 /*
   2  *  linux/include/asm-arm/cpu-multi32.h
   3  *
   4  *  Copyright (C) 2000 Russell King
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10 #ifndef __ASSEMBLY__
  11
  12 #include <asm/memory.h>
  13 #include <asm/page.h>
  14
  15 /* forward-declare task_struct */
  16 struct task_struct;
  17
  18 /*
  19  * Don't change this structure - ASM code
  20  * relies on it.
  21  */
  22 extern struct processor {
  23         /* MISC
  24          * get data abort address/flags
  25          */
  26         void (*_data_abort)(unsigned long pc);
  27         /*
  28          * check for any bugs
  29          */
  30         void (*_check_bugs)(void);
  31         /*
  32          * Set up any processor specifics
  33          */
  34         void (*_proc_init)(void);
  35         /*
  36          * Disable any processor specifics
  37          */
  38         void (*_proc_fin)(void);
  39         /*
  40          * Special stuff for a reset
  41          */
  42         volatile void (*reset)(unsigned long addr);
  43         /*
  44          * Idle the processor
  45          */
  46         int (*_do_idle)(void);
  47         /*
  48          * Processor architecture specific
  49          */
  50         struct {        /* CACHE */
  51                 /*
  52                  * flush all caches
  53                  */
  54                 void (*clean_invalidate_all)(void);
  55                 /*
  56                  * flush a specific page or pages
  57                  */
  58                 void (*clean_invalidate_range)(unsigned long address, unsigned long end, int flags);
  59                 /*
  60                  * flush a page to RAM
  61                  */
  62                 void (*_flush_ram_page)(void *virt_page);
  63         } cache;
  64
  65         struct {        /* D-cache */
  66                 /*
  67                  * invalidate the specified data range
  68                  */
  69                 void (*invalidate_range)(unsigned long start, unsigned long end);
  70                 /*
  71                  * clean specified data range
  72                  */
  73                 void (*clean_range)(unsigned long start, unsigned long end);
  74                 /*
  75                  * obsolete flush cache entry
  76                  */
  77                 void (*clean_page)(void *virt_page);
  78                 /*
  79                  * clean a virtual address range from the
  80                  * D-cache without flushing the cache.
  81                  */
  82                 void (*clean_entry)(unsigned long start);
  83         } dcache;
  84
  85         struct {        /* I-cache */
  86                 /*
  87                  * invalidate the I-cache for the specified range
  88                  */
  89                 void (*invalidate_range)(unsigned long start, unsigned long end);
  90                 /*
  91                  * invalidate the I-cache for the specified virtual page
  92                  */
  93                 void (*invalidate_page)(void *virt_page);
  94         } icache;
  95
  96         struct {        /* TLB */
  97                 /*
  98                  * flush all TLBs
  99                  */
 100                 void (*invalidate_all)(void);
 101                 /*
 102                  * flush a specific TLB
 103                  */
 104                 void (*invalidate_range)(unsigned long address, unsigned long end);
 105                 /*
 106                  * flush a specific TLB
 107                  */
 108                 void (*invalidate_page)(unsigned long address, int flags);
 109         } tlb;
 110
 111         struct {        /* PageTable */
 112                 /*
 113                  * Set the page table
 114                  */
 115                 void (*set_pgd)(unsigned long pgd_phys);
 116                 /*
 117                  * Set a PMD (handling IMP bit 4)
 118                  */
 119                 void (*set_pmd)(pmd_t *pmdp, pmd_t pmd);
 120                 /*
 121                  * Set a PTE
 122                  */
 123                 void (*set_pte)(pte_t *ptep, pte_t pte);
 124         } pgtable;
 125 } processor;
 126
 127 extern const struct processor arm6_processor_functions;
 128 extern const struct processor arm7_processor_functions;
 129 extern const struct processor sa110_processor_functions;
 130
 131 #define cpu_data_abort(pc)                      processor._data_abort(pc)
 132 #define cpu_check_bugs()                        processor._check_bugs()
 133 #define cpu_proc_init()                         processor._proc_init()
 134 #define cpu_proc_fin()                          processor._proc_fin()
 135 #define cpu_reset(addr)                         processor.reset(addr)
 136 #define cpu_do_idle()                           processor._do_idle()
 137
 138 #define cpu_cache_clean_invalidate_all()        processor.cache.clean_invalidate_all()
 139 #define cpu_cache_clean_invalidate_range(s,e,f) processor.cache.clean_invalidate_range(s,e,f)
 140 #define cpu_flush_ram_page(vp)                  processor.cache._flush_ram_page(vp)
 141
 142 #define cpu_dcache_clean_page(vp)               processor.dcache.clean_page(vp)
 143 #define cpu_dcache_clean_entry(addr)            processor.dcache.clean_entry(addr)
 144 #define cpu_dcache_clean_range(s,e)             processor.dcache.clean_range(s,e)
 145 #define cpu_dcache_invalidate_range(s,e)        processor.dcache.invalidate_range(s,e)
 146
 147 #define cpu_icache_invalidate_range(s,e)        processor.icache.invalidate_range(s,e)
 148 #define cpu_icache_invalidate_page(vp)          processor.icache.invalidate_page(vp)
 149
 150 #define cpu_tlb_invalidate_all()                processor.tlb.invalidate_all()
 151 #define cpu_tlb_invalidate_range(s,e)           processor.tlb.invalidate_range(s,e)
 152 #define cpu_tlb_invalidate_page(vp,f)           processor.tlb.invalidate_page(vp,f)
 153
 154 #define cpu_set_pgd(pgd)                        processor.pgtable.set_pgd(pgd)
 155 #define cpu_set_pmd(pmdp, pmd)                  processor.pgtable.set_pmd(pmdp, pmd)
 156 #define cpu_set_pte(ptep, pte)                  processor.pgtable.set_pte(ptep, pte)
 157
 158 #define cpu_switch_mm(pgd,tsk)                  cpu_set_pgd(__virt_to_phys((unsigned long)(pgd)))
 159
 160 #define cpu_get_pgd()   \
 161         ({                                              \
 162                 unsigned long pg;                       \
 163                 __asm__("mrc p15, 0, %0, c2, c0, 0"     \
 164                          : "=r" (pg));                  \
 165                 pg &= ~0x3fff;                          \
 166                 (pgd_t *)phys_to_virt(pg);              \
 167         })
 168
 169 #endif