mirror of https://gitee.com/openkylin/linux.git
[POWERPC] Start factoring pgtable-ppc32.h and pgtable-ppc64.h
This factors some things defined in both pgtable-ppc32.h and pgtable-ppc64.h into the common part of asm-powerpc/pgtable.h. These are all things which have essentially identical definitions, and which by their nature are very unlikely ever to need different definitions in the two cases. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
David Gibson
Paul Mackerras
parent
c0770f686c
commit
9c709f3b62
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@ -6,11 +6,7 @@
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#ifndef __ASSEMBLY__
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#include <linux/sched.h>
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#include <linux/threads.h>
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#include <asm/processor.h> /* For TASK_SIZE */
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#include <asm/mmu.h>
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#include <asm/page.h>
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#include <asm/io.h> /* For sub-arch specific PPC_PIN_SIZE */
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struct mm_struct;
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extern unsigned long va_to_phys(unsigned long address);
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extern pte_t *va_to_pte(unsigned long address);
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@ -488,14 +484,6 @@ extern unsigned long bad_call_to_PMD_PAGE_SIZE(void);
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#define pfn_pte(pfn, prot) __pte(((pte_basic_t)(pfn) << PFN_SHIFT_OFFSET) |\
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pgprot_val(prot))
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#define mk_pte(page, prot) pfn_pte(page_to_pfn(page), prot)
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/*
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* ZERO_PAGE is a global shared page that is always zero: used
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* for zero-mapped memory areas etc..
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*/
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extern unsigned long empty_zero_page[1024];
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#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
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#endif /* __ASSEMBLY__ */
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#define pte_none(pte) ((pte_val(pte) & ~_PTE_NONE_MASK) == 0)
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@ -730,10 +718,6 @@ extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
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#define pte_unmap(pte) kunmap_atomic(pte, KM_PTE0)
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#define pte_unmap_nested(pte) kunmap_atomic(pte, KM_PTE1)
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extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
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extern void paging_init(void);
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/*
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* Encode and decode a swap entry.
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* Note that the bits we use in a PTE for representing a swap entry
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@ -751,12 +735,6 @@ extern void paging_init(void);
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#define pte_to_pgoff(pte) (pte_val(pte) >> 3)
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#define pgoff_to_pte(off) ((pte_t) { ((off) << 3) | _PAGE_FILE })
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/* Needs to be defined here and not in linux/mm.h, as it is arch dependent */
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#define kern_addr_valid(addr) (1)
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#define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \
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remap_pfn_range(vma, vaddr, pfn, size, prot)
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/*
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* No page table caches to initialise
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*/
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@ -7,11 +7,7 @@
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#ifndef __ASSEMBLY__
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#include <linux/stddef.h>
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#include <asm/processor.h> /* For TASK_SIZE */
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#include <asm/mmu.h>
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#include <asm/page.h>
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#include <asm/tlbflush.h>
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struct mm_struct;
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#endif /* __ASSEMBLY__ */
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#ifdef CONFIG_PPC_64K_PAGES
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@ -143,16 +139,6 @@ struct mm_struct;
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#define __S110 PAGE_SHARED_X
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#define __S111 PAGE_SHARED_X
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#ifndef __ASSEMBLY__
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/*
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* ZERO_PAGE is a global shared page that is always zero: used
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* for zero-mapped memory areas etc..
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*/
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extern unsigned long empty_zero_page[PAGE_SIZE/sizeof(unsigned long)];
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#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
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#endif /* __ASSEMBLY__ */
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#ifdef CONFIG_HUGETLB_PAGE
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#define HAVE_ARCH_UNMAPPED_AREA
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@ -447,10 +433,6 @@ extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
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#define pgd_ERROR(e) \
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printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e))
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extern pgd_t swapper_pg_dir[];
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extern void paging_init(void);
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/* Encode and de-code a swap entry */
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#define __swp_type(entry) (((entry).val >> 1) & 0x3f)
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#define __swp_offset(entry) ((entry).val >> 8)
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@ -461,17 +443,6 @@ extern void paging_init(void);
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#define pgoff_to_pte(off) ((pte_t) {((off) << PTE_RPN_SHIFT)|_PAGE_FILE})
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#define PTE_FILE_MAX_BITS (BITS_PER_LONG - PTE_RPN_SHIFT)
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/*
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* kern_addr_valid is intended to indicate whether an address is a valid
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* kernel address. Most 32-bit archs define it as always true (like this)
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* but most 64-bit archs actually perform a test. What should we do here?
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* The only use is in fs/ncpfs/dir.c
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*/
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#define kern_addr_valid(addr) (1)
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#define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \
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remap_pfn_range(vma, vaddr, pfn, size, prot)
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void pgtable_cache_init(void);
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/*
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@ -2,6 +2,13 @@
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#define _ASM_POWERPC_PGTABLE_H
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#ifdef __KERNEL__
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#ifndef __ASSEMBLY__
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#include <asm/processor.h> /* For TASK_SIZE */
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#include <asm/mmu.h>
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#include <asm/page.h>
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struct mm_struct;
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#endif /* !__ASSEMBLY__ */
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#if defined(CONFIG_PPC64)
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# include <asm/pgtable-ppc64.h>
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#else
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@ -9,6 +16,27 @@
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#endif
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#ifndef __ASSEMBLY__
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/*
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* ZERO_PAGE is a global shared page that is always zero: used
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* for zero-mapped memory areas etc..
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*/
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extern unsigned long empty_zero_page[];
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#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
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extern pgd_t swapper_pg_dir[];
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extern void paging_init(void);
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/*
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* kern_addr_valid is intended to indicate whether an address is a valid
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* kernel address. Most 32-bit archs define it as always true (like this)
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* but most 64-bit archs actually perform a test. What should we do here?
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*/
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#define kern_addr_valid(addr) (1)
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#define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \
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remap_pfn_range(vma, vaddr, pfn, size, prot)
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#include <asm-generic/pgtable.h>
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#endif /* __ASSEMBLY__ */
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