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/page.h>
  13
  14 /* forward-declare task_struct */
  15 struct task_struct;
  16
  17 /*
  18  * Don't change this structure - ASM code
  19  * relies on it.
  20  */
  21 extern struct processor {
  22         /* MISC
  23          * get data abort address/flags
  24          */
  25         void (*_data_abort)(unsigned long pc);
  26         /*
  27          * check for any bugs
  28          */
  29         void (*_check_bugs)(void);
  30         /*
  31          * Set up any processor specifics
  32          */
  33         void (*_proc_init)(void);
  34         /*
  35          * Disable any processor specifics
  36          */
  37         void (*_proc_fin)(void);
  38         /*
  39          * Special stuff for a reset
  40          */
  41         volatile void (*reset)(unsigned long addr);
  42         /*
  43          * Idle the processor
  44          */
  45         int (*_do_idle)(int mode);
  46         /*
  47          * Processor architecture specific
  48          */
  49         struct {        /* CACHE */
  50                 /*
  51                  * flush all caches
  52                  */
  53                 void (*clean_invalidate_all)(void);
  54                 /*
  55                  * flush a specific page or pages
  56                  */
  57                 void (*clean_invalidate_range)(unsigned long address, unsigned long end, int flags);
  58                 /*
  59                  * flush a page to RAM
  60                  */
  61                 void (*_flush_ram_page)(void *virt_page);
  62         } cache;
  63
  64         struct {        /* D-cache */
  65                 /*
  66                  * invalidate the specified data range
  67                  */
  68                 void (*invalidate_range)(unsigned long start, unsigned long end);
  69                 /*
  70                  * clean specified data range
  71                  */
  72                 void (*clean_range)(unsigned long start, unsigned long end);
  73                 /*
  74                  * obsolete flush cache entry
  75                  */
  76                 void (*clean_page)(void *virt_page);
  77                 /*
  78                  * clean a virtual address range from the
  79                  * D-cache without flushing the cache.
  80                  */
  81                 void (*clean_entry)(unsigned long start);
  82         } dcache;
  83
  84         struct {        /* I-cache */
  85                 /*
  86                  * invalidate the I-cache for the specified range
  87                  */
  88                 void (*invalidate_range)(unsigned long start, unsigned long end);
  89                 /*
  90                  * invalidate the I-cache for the specified virtual page
  91                  */
  92                 void (*invalidate_page)(void *virt_page);
  93         } icache;
  94
  95         struct {        /* TLB */
  96                 /*
  97                  * flush all TLBs
  98                  */
  99                 void (*invalidate_all)(void);
 100                 /*
 101                  * flush a specific TLB
 102                  */
 103                 void (*invalidate_range)(unsigned long address, unsigned long end);
 104                 /*
 105                  * flush a specific TLB
 106                  */
 107                 void (*invalidate_page)(unsigned long address, int flags);
 108         } tlb;
 109
 110         struct {        /* PageTable */
 111                 /*
 112                  * Set the page table
 113                  */
 114                 void (*set_pgd)(unsigned long pgd_phys);
 115                 /*
 116                  * Set a PMD (handling IMP bit 4)
 117                  */
 118                 void (*set_pmd)(pmd_t *pmdp, pmd_t pmd);
 119                 /*
 120                  * Set a PTE
 121                  */
 122                 void (*set_pte)(pte_t *ptep, pte_t pte);
 123         } pgtable;
 124 } processor;
 125
 126 extern const struct processor arm6_processor_functions;
 127 extern const struct processor arm7_processor_functions;
 128 extern const struct processor sa110_processor_functions;
 129
 130 #define cpu_data_abort(pc)                      processor._data_abort(pc)
 131 #define cpu_check_bugs()                        processor._check_bugs()
 132 #define cpu_proc_init()                         processor._proc_init()
 133 #define cpu_proc_fin()                          processor._proc_fin()
 134 #define cpu_reset(addr)                         processor.reset(addr)
 135 #define cpu_do_idle(mode)                       processor._do_idle(mode)
 136
 137 #define cpu_cache_clean_invalidate_all()        processor.cache.clean_invalidate_all()
 138 #define cpu_cache_clean_invalidate_range(s,e,f) processor.cache.clean_invalidate_range(s,e,f)
 139 #define cpu_flush_ram_page(vp)                  processor.cache._flush_ram_page(vp)
 140
 141 #define cpu_dcache_clean_page(vp)               processor.dcache.clean_page(vp)
 142 #define cpu_dcache_clean_entry(addr)            processor.dcache.clean_entry(addr)
 143 #define cpu_dcache_clean_range(s,e)             processor.dcache.clean_range(s,e)
 144 #define cpu_dcache_invalidate_range(s,e)        processor.dcache.invalidate_range(s,e)
 145
 146 #define cpu_icache_invalidate_range(s,e)        processor.icache.invalidate_range(s,e)
 147 #define cpu_icache_invalidate_page(vp)          processor.icache.invalidate_page(vp)
 148
 149 #define cpu_tlb_invalidate_all()                processor.tlb.invalidate_all()
 150 #define cpu_tlb_invalidate_range(s,e)           processor.tlb.invalidate_range(s,e)
 151 #define cpu_tlb_invalidate_page(vp,f)           processor.tlb.invalidate_page(vp,f)
 152
 153 #define cpu_set_pgd(pgd)                        processor.pgtable.set_pgd(pgd)
 154 #define cpu_set_pmd(pmdp, pmd)                  processor.pgtable.set_pmd(pmdp, pmd)
 155 #define cpu_set_pte(ptep, pte)                  processor.pgtable.set_pte(ptep, pte)
 156
 157 #define cpu_switch_mm(pgd,tsk)                  cpu_set_pgd(__virt_to_phys((unsigned long)(pgd)))
 158
 159 #endif