include/asm-arm/cpu-multi32.h

   1 #ifndef __ASSEMBLY__
   2
   3 #include <asm/page.h>
   4
   5 /* forward-declare task_struct */
   6 struct task_struct;
   7
   8 /*
   9  * Don't change this structure - ASM code
  10  * relies on it.
  11  */
  12 extern struct processor {
  13         /* MISC
  14          * get data abort address/flags
  15          */
  16         void (*_data_abort)(unsigned long pc);
  17         /*
  18          * check for any bugs
  19          */
  20         void (*_check_bugs)(void);
  21         /*
  22          * Set up any processor specifics
  23          */
  24         void (*_proc_init)(void);
  25         /*
  26          * Disable any processor specifics
  27          */
  28         void (*_proc_fin)(void);
  29         /*
  30          * Processor architecture specific
  31          */
  32         /* CACHE
  33          *
  34          * flush all caches
  35          */
  36         void (*_flush_cache_all)(void);
  37         /*
  38          * flush a specific page or pages
  39          */
  40         void (*_flush_cache_area)(unsigned long address, unsigned long end, int flags);
  41         /*
  42          * flush cache entry for an address
  43          */
  44         void (*_flush_cache_entry)(unsigned long address);
  45         /*
  46          * clean a virtual address range from the
  47          * D-cache without flushing the cache.
  48          */
  49         void (*_clean_cache_area)(unsigned long start, unsigned long size);
  50         /*
  51          * flush a page to RAM
  52          */
  53         void (*_flush_ram_page)(unsigned long page);
  54         /* TLB
  55          *
  56          * flush all TLBs
  57          */
  58         void (*_flush_tlb_all)(void);
  59         /*
  60          * flush a specific TLB
  61          */
  62         void (*_flush_tlb_area)(unsigned long address, unsigned long end, int flags);
  63         /*
  64          * Set the page table
  65          */
  66         void (*_set_pgd)(unsigned long pgd_phys);
  67         /*
  68          * Set a PMD (handling IMP bit 4)
  69          */
  70         void (*_set_pmd)(pmd_t *pmdp, pmd_t pmd);
  71         /*
  72          * Set a PTE
  73          */
  74         void (*_set_pte)(pte_t *ptep, pte_t pte);
  75         /*
  76          * Special stuff for a reset
  77          */
  78         unsigned long (*reset)(void);
  79         /*
  80          * flush an icached page
  81          */
  82         void (*_flush_icache_area)(unsigned long start, unsigned long size);
  83         /*
  84          * write back dirty cached data
  85          */
  86         void (*_cache_wback_area)(unsigned long start, unsigned long end);
  87         /*
  88          * purge cached data without (necessarily) writing it back
  89          */
  90         void (*_cache_purge_area)(unsigned long start, unsigned long end);
  91         /*
  92          * flush a specific TLB
  93          */
  94         void (*_flush_tlb_page)(unsigned long address, int flags);
  95         /*
  96          * Idle the processor
  97          */
  98         int (*_do_idle)(void);
  99         /*
 100          * flush I cache for a page
 101          */
 102         void (*_flush_icache_page)(unsigned long address);
 103 } processor;
 104
 105 extern const struct processor arm6_processor_functions;
 106 extern const struct processor arm7_processor_functions;
 107 extern const struct processor sa110_processor_functions;
 108
 109 #define cpu_data_abort(pc)                      processor._data_abort(pc)
 110 #define cpu_check_bugs()                        processor._check_bugs()
 111 #define cpu_proc_init()                         processor._proc_init()
 112 #define cpu_proc_fin()                          processor._proc_fin()
 113 #define cpu_do_idle()                           processor._do_idle()
 114
 115 #define cpu_flush_cache_all()                   processor._flush_cache_all()
 116 #define cpu_flush_cache_area(start,end,flags)   processor._flush_cache_area(start,end,flags)
 117 #define cpu_flush_cache_entry(addr)             processor._flush_cache_entry(addr)
 118 #define cpu_clean_cache_area(start,size)        processor._clean_cache_area(start,size)
 119 #define cpu_flush_ram_page(page)                processor._flush_ram_page(page)
 120 #define cpu_flush_tlb_all()                     processor._flush_tlb_all()
 121 #define cpu_flush_tlb_area(start,end,flags)     processor._flush_tlb_area(start,end,flags)
 122 #define cpu_flush_tlb_page(addr,flags)          processor._flush_tlb_page(addr,flags)
 123 #define cpu_set_pgd(pgd)                        processor._set_pgd(pgd)
 124 #define cpu_set_pmd(pmdp, pmd)                  processor._set_pmd(pmdp, pmd)
 125 #define cpu_set_pte(ptep, pte)                  processor._set_pte(ptep, pte)
 126 #define cpu_reset()                             processor.reset()
 127 #define cpu_flush_icache_area(start,end)        processor._flush_icache_area(start,end)
 128 #define cpu_cache_wback_area(start,end)         processor._cache_wback_area(start,end)
 129 #define cpu_cache_purge_area(start,end)         processor._cache_purge_area(start,end)
 130 #define cpu_flush_icache_page(virt)             processor._flush_icache_page(virt)
 131
 132 #define cpu_switch_mm(pgd,tsk)                  cpu_set_pgd(__virt_to_phys((unsigned long)(pgd)))
 133
 134 #endif