From 27137e5285a3388e8f86d7bc5fe0ed8b92bd4624 Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Sun, 16 Nov 2008 20:08:45 -0800 Subject: sparc,sparc64: unify mm/ - move all sparc64/mm/ files to arch/sparc/mm/ - commonly named files are named _64.c - add files to sparc/mm/Makefile preserving link order - delete now unused sparc64/mm/Makefile - sparc64 now finds mm/ in sparc Signed-off-by: Sam Ravnborg Signed-off-by: David S. Miller --- arch/sparc64/mm/generic.c | 163 ---------------------------------------------- 1 file changed, 163 deletions(-) delete mode 100644 arch/sparc64/mm/generic.c (limited to 'arch/sparc64/mm/generic.c') diff --git a/arch/sparc64/mm/generic.c b/arch/sparc64/mm/generic.c deleted file mode 100644 index f362c2037013..000000000000 --- a/arch/sparc64/mm/generic.c +++ /dev/null @@ -1,163 +0,0 @@ -/* - * generic.c: Generic Sparc mm routines that are not dependent upon - * MMU type but are Sparc specific. - * - * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu) - */ - -#include -#include -#include -#include - -#include -#include -#include -#include - -/* Remap IO memory, the same way as remap_pfn_range(), but use - * the obio memory space. - * - * They use a pgprot that sets PAGE_IO and does not check the - * mem_map table as this is independent of normal memory. - */ -static inline void io_remap_pte_range(struct mm_struct *mm, pte_t * pte, - unsigned long address, - unsigned long size, - unsigned long offset, pgprot_t prot, - int space) -{ - unsigned long end; - - /* clear hack bit that was used as a write_combine side-effect flag */ - offset &= ~0x1UL; - address &= ~PMD_MASK; - end = address + size; - if (end > PMD_SIZE) - end = PMD_SIZE; - do { - pte_t entry; - unsigned long curend = address + PAGE_SIZE; - - entry = mk_pte_io(offset, prot, space, PAGE_SIZE); - if (!(address & 0xffff)) { - if (PAGE_SIZE < (4 * 1024 * 1024) && - !(address & 0x3fffff) && - !(offset & 0x3ffffe) && - end >= address + 0x400000) { - entry = mk_pte_io(offset, prot, space, - 4 * 1024 * 1024); - curend = address + 0x400000; - offset += 0x400000; - } else if (PAGE_SIZE < (512 * 1024) && - !(address & 0x7ffff) && - !(offset & 0x7fffe) && - end >= address + 0x80000) { - entry = mk_pte_io(offset, prot, space, - 512 * 1024 * 1024); - curend = address + 0x80000; - offset += 0x80000; - } else if (PAGE_SIZE < (64 * 1024) && - !(offset & 0xfffe) && - end >= address + 0x10000) { - entry = mk_pte_io(offset, prot, space, - 64 * 1024); - curend = address + 0x10000; - offset += 0x10000; - } else - offset += PAGE_SIZE; - } else - offset += PAGE_SIZE; - - if (pte_write(entry)) - entry = pte_mkdirty(entry); - do { - BUG_ON(!pte_none(*pte)); - set_pte_at(mm, address, pte, entry); - address += PAGE_SIZE; - pte_val(entry) += PAGE_SIZE; - pte++; - } while (address < curend); - } while (address < end); -} - -static inline int io_remap_pmd_range(struct mm_struct *mm, pmd_t * pmd, unsigned long address, unsigned long size, - unsigned long offset, pgprot_t prot, int space) -{ - unsigned long end; - - address &= ~PGDIR_MASK; - end = address + size; - if (end > PGDIR_SIZE) - end = PGDIR_SIZE; - offset -= address; - do { - pte_t * pte = pte_alloc_map(mm, pmd, address); - if (!pte) - return -ENOMEM; - io_remap_pte_range(mm, pte, address, end - address, address + offset, prot, space); - pte_unmap(pte); - address = (address + PMD_SIZE) & PMD_MASK; - pmd++; - } while (address < end); - return 0; -} - -static inline int io_remap_pud_range(struct mm_struct *mm, pud_t * pud, unsigned long address, unsigned long size, - unsigned long offset, pgprot_t prot, int space) -{ - unsigned long end; - - address &= ~PUD_MASK; - end = address + size; - if (end > PUD_SIZE) - end = PUD_SIZE; - offset -= address; - do { - pmd_t *pmd = pmd_alloc(mm, pud, address); - if (!pud) - return -ENOMEM; - io_remap_pmd_range(mm, pmd, address, end - address, address + offset, prot, space); - address = (address + PUD_SIZE) & PUD_MASK; - pud++; - } while (address < end); - return 0; -} - -int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from, - unsigned long pfn, unsigned long size, pgprot_t prot) -{ - int error = 0; - pgd_t * dir; - unsigned long beg = from; - unsigned long end = from + size; - struct mm_struct *mm = vma->vm_mm; - int space = GET_IOSPACE(pfn); - unsigned long offset = GET_PFN(pfn) << PAGE_SHIFT; - unsigned long phys_base; - - phys_base = offset | (((unsigned long) space) << 32UL); - - /* See comment in mm/memory.c remap_pfn_range */ - vma->vm_flags |= VM_IO | VM_RESERVED | VM_PFNMAP; - vma->vm_pgoff = phys_base >> PAGE_SHIFT; - - offset -= from; - dir = pgd_offset(mm, from); - flush_cache_range(vma, beg, end); - - while (from < end) { - pud_t *pud = pud_alloc(mm, dir, from); - error = -ENOMEM; - if (!pud) - break; - error = io_remap_pud_range(mm, pud, from, end - from, offset + from, prot, space); - if (error) - break; - from = (from + PGDIR_SIZE) & PGDIR_MASK; - dir++; - } - - flush_tlb_range(vma, beg, end); - return error; -} -- cgit v1.2.2