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1276 |
phoenix |
/*
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* linux/include/asm-arm/cpu-multi32.h
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*
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* Copyright (C) 2000 Russell King
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __ASSEMBLY__
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#include <asm/memory.h>
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#include <asm/page.h>
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/* forward-declare task_struct */
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struct task_struct;
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/*
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* Don't change this structure - ASM code
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* relies on it.
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*/
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extern struct processor {
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/* MISC
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* get data abort address/flags
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*/
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void (*_data_abort)(unsigned long pc);
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/*
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* check for any bugs
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*/
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void (*_check_bugs)(void);
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/*
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* Set up any processor specifics
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*/
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void (*_proc_init)(void);
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/*
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* Disable any processor specifics
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*/
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void (*_proc_fin)(void);
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/*
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* Special stuff for a reset
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*/
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volatile void (*reset)(unsigned long addr);
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/*
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* Idle the processor
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*/
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int (*_do_idle)(void);
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/*
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* Processor architecture specific
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*/
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struct { /* CACHE */
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/*
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* flush all caches
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*/
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void (*clean_invalidate_all)(void);
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/*
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* flush a specific page or pages
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*/
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void (*clean_invalidate_range)(unsigned long address, unsigned long end, int flags);
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/*
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* flush a page to RAM
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*/
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void (*_flush_ram_page)(void *virt_page);
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} cache;
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struct { /* D-cache */
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/*
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* invalidate the specified data range
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*/
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void (*invalidate_range)(unsigned long start, unsigned long end);
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/*
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* clean specified data range
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*/
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void (*clean_range)(unsigned long start, unsigned long end);
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/*
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* obsolete flush cache entry
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*/
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void (*clean_page)(void *virt_page);
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/*
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* clean a virtual address range from the
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* D-cache without flushing the cache.
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*/
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void (*clean_entry)(unsigned long start);
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} dcache;
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struct { /* I-cache */
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/*
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* invalidate the I-cache for the specified range
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*/
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void (*invalidate_range)(unsigned long start, unsigned long end);
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/*
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* invalidate the I-cache for the specified virtual page
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*/
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void (*invalidate_page)(void *virt_page);
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} icache;
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struct { /* TLB */
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/*
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* flush all TLBs
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*/
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void (*invalidate_all)(void);
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/*
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* flush a specific TLB
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*/
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void (*invalidate_range)(unsigned long address, unsigned long end);
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/*
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* flush a specific TLB
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*/
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void (*invalidate_page)(unsigned long address, int flags);
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} tlb;
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struct { /* PageTable */
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/*
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* Set the page table
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*/
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void (*set_pgd)(unsigned long pgd_phys);
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/*
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* Set a PMD (handling IMP bit 4)
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*/
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void (*set_pmd)(pmd_t *pmdp, pmd_t pmd);
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/*
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* Set a PTE
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*/
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void (*set_pte)(pte_t *ptep, pte_t pte);
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} pgtable;
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} processor;
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extern const struct processor arm6_processor_functions;
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extern const struct processor arm7_processor_functions;
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extern const struct processor sa110_processor_functions;
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#define cpu_data_abort(pc) processor._data_abort(pc)
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#define cpu_check_bugs() processor._check_bugs()
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#define cpu_proc_init() processor._proc_init()
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#define cpu_proc_fin() processor._proc_fin()
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#define cpu_reset(addr) processor.reset(addr)
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#define cpu_do_idle() processor._do_idle()
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#define cpu_cache_clean_invalidate_all() processor.cache.clean_invalidate_all()
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#define cpu_cache_clean_invalidate_range(s,e,f) processor.cache.clean_invalidate_range(s,e,f)
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#define cpu_flush_ram_page(vp) processor.cache._flush_ram_page(vp)
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#define cpu_dcache_clean_page(vp) processor.dcache.clean_page(vp)
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#define cpu_dcache_clean_entry(addr) processor.dcache.clean_entry(addr)
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#define cpu_dcache_clean_range(s,e) processor.dcache.clean_range(s,e)
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#define cpu_dcache_invalidate_range(s,e) processor.dcache.invalidate_range(s,e)
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#define cpu_icache_invalidate_range(s,e) processor.icache.invalidate_range(s,e)
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#define cpu_icache_invalidate_page(vp) processor.icache.invalidate_page(vp)
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#define cpu_tlb_invalidate_all() processor.tlb.invalidate_all()
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#define cpu_tlb_invalidate_range(s,e) processor.tlb.invalidate_range(s,e)
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#define cpu_tlb_invalidate_page(vp,f) processor.tlb.invalidate_page(vp,f)
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#define cpu_set_pgd(pgd) processor.pgtable.set_pgd(pgd)
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#define cpu_set_pmd(pmdp, pmd) processor.pgtable.set_pmd(pmdp, pmd)
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#define cpu_set_pte(ptep, pte) processor.pgtable.set_pte(ptep, pte)
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#define cpu_switch_mm(pgd,tsk) cpu_set_pgd(__virt_to_phys((unsigned long)(pgd)))
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#define cpu_get_pgd() \
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({ \
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unsigned long pg; \
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__asm__("mrc p15, 0, %0, c2, c0, 0" \
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: "=r" (pg)); \
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pg &= ~0x3fff; \
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(pgd_t *)phys_to_virt(pg); \
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})
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#endif
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