LXR linux-old/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 */
  16struct task_struct;
  17
  18/*
  19 * Don't change this structure - ASM code
  20 * relies on it.
  21 */
  22extern 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)(int mode);
  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
 127extern const struct processor arm6_processor_functions;
 128extern const struct processor arm7_processor_functions;
 129extern 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(mode)                       processor._do_idle(mode)
 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
 170