diff options
Diffstat (limited to 'arch/sh/mm/pg-mmu.c')
| -rw-r--r-- | arch/sh/mm/pg-mmu.c | 48 |
1 files changed, 0 insertions, 48 deletions
diff --git a/arch/sh/mm/pg-mmu.c b/arch/sh/mm/pg-mmu.c index 7a6ef34bd499..f51d0a4eb3ba 100644 --- a/arch/sh/mm/pg-mmu.c +++ b/arch/sh/mm/pg-mmu.c @@ -15,54 +15,6 @@ #include <asm/mmu_context.h> #include <asm/cacheflush.h> -#define kmap_get_fixmap_pte(vaddr) \ - pte_offset_kernel(pmd_offset(pud_offset(pgd_offset_k(vaddr), (vaddr)), (vaddr)), (vaddr)) - -static pte_t *kmap_coherent_pte; - -void __init kmap_coherent_init(void) -{ - unsigned long vaddr; - - if (!boot_cpu_data.dcache.n_aliases) - return; - - /* cache the first coherent kmap pte */ - vaddr = __fix_to_virt(FIX_CMAP_BEGIN); - kmap_coherent_pte = kmap_get_fixmap_pte(vaddr); -} - -static void *kmap_coherent(struct page *page, unsigned long addr) -{ - enum fixed_addresses idx; - unsigned long vaddr, flags; - pte_t pte; - - BUG_ON(test_bit(PG_dcache_dirty, &page->flags)); - - inc_preempt_count(); - - idx = (addr & current_cpu_data.dcache.alias_mask) >> PAGE_SHIFT; - vaddr = __fix_to_virt(FIX_CMAP_END - idx); - pte = mk_pte(page, PAGE_KERNEL); - - local_irq_save(flags); - flush_tlb_one(get_asid(), vaddr); - local_irq_restore(flags); - - update_mmu_cache(NULL, vaddr, pte); - - set_pte(kmap_coherent_pte - (FIX_CMAP_END - idx), pte); - - return (void *)vaddr; -} - -static inline void kunmap_coherent(void) -{ - dec_preempt_count(); - preempt_check_resched(); -} - void copy_to_user_page(struct vm_area_struct *vma, struct page *page, unsigned long vaddr, void *dst, const void *src, unsigned long len) |