From 1f8d419e291f7f7f7f3ffd4f0ba00834621690c8 Mon Sep 17 00:00:00 2001 From: David Gibson Date: Thu, 5 May 2005 16:15:13 -0700 Subject: [PATCH] ppc64: pgtable.h and other header cleanups This patch started as simply removing a few never-used macros from asm-ppc64/pgtable.h, then kind of grew. It now makes a bunch of cleanups to the ppc64 low-level header files (with corresponding changes to .c files where necessary) such as: - Abolishing never-used macros - Eliminating multiple #defines with the same purpose - Removing pointless macros (cases where just expanding the macro everywhere turns out clearer and more sensible) - Removing some cases where macros which could be defined in terms of each other weren't - Moving imalloc() related definitions from pgtable.h to their own header file (imalloc.h) - Re-arranging headers to group things more logically - Moving all VSID allocation related things to mmu.h, instead of being split between mmu.h and mmu_context.h - Removing some reserved space for flags from the PMD - we're not using it. - Fix some bugs which broke compile with STRICT_MM_TYPECHECKS. Signed-off-by: David Gibson Acked-by: Paul Mackerras Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-ppc64/pgtable.h | 117 ++++++++++---------------------------------- 1 file changed, 27 insertions(+), 90 deletions(-) (limited to 'include/asm-ppc64/pgtable.h') diff --git a/include/asm-ppc64/pgtable.h b/include/asm-ppc64/pgtable.h index b984e2747e0c..264c4f7993be 100644 --- a/include/asm-ppc64/pgtable.h +++ b/include/asm-ppc64/pgtable.h @@ -17,16 +17,6 @@ #include -/* PMD_SHIFT determines what a second-level page table entry can map */ -#define PMD_SHIFT (PAGE_SHIFT + PAGE_SHIFT - 3) -#define PMD_SIZE (1UL << PMD_SHIFT) -#define PMD_MASK (~(PMD_SIZE-1)) - -/* PGDIR_SHIFT determines what a third-level page table entry can map */ -#define PGDIR_SHIFT (PAGE_SHIFT + (PAGE_SHIFT - 3) + (PAGE_SHIFT - 2)) -#define PGDIR_SIZE (1UL << PGDIR_SHIFT) -#define PGDIR_MASK (~(PGDIR_SIZE-1)) - /* * Entries per page directory level. The PTE level must use a 64b record * for each page table entry. The PMD and PGD level use a 32b record for @@ -40,40 +30,30 @@ #define PTRS_PER_PMD (1 << PMD_INDEX_SIZE) #define PTRS_PER_PGD (1 << PGD_INDEX_SIZE) -#define USER_PTRS_PER_PGD (1024) -#define FIRST_USER_ADDRESS 0 +/* PMD_SHIFT determines what a second-level page table entry can map */ +#define PMD_SHIFT (PAGE_SHIFT + PTE_INDEX_SIZE) +#define PMD_SIZE (1UL << PMD_SHIFT) +#define PMD_MASK (~(PMD_SIZE-1)) -#define EADDR_SIZE (PTE_INDEX_SIZE + PMD_INDEX_SIZE + \ - PGD_INDEX_SIZE + PAGE_SHIFT) +/* PGDIR_SHIFT determines what a third-level page table entry can map */ +#define PGDIR_SHIFT (PMD_SHIFT + PMD_INDEX_SIZE) +#define PGDIR_SIZE (1UL << PGDIR_SHIFT) +#define PGDIR_MASK (~(PGDIR_SIZE-1)) + +#define FIRST_USER_ADDRESS 0 /* * Size of EA range mapped by our pagetables. */ -#define PGTABLE_EA_BITS 41 -#define PGTABLE_EA_MASK ((1UL<> PMD_TO_PTEPAGE_SHIFT)) +#define pmd_page_kernel(pmd) (__bpn_to_ba(pmd_val(pmd))) #define pmd_page(pmd) virt_to_page(pmd_page_kernel(pmd)) #define pud_set(pudp, pmdp) (pud_val(*(pudp)) = (__ba_to_bpn(pmdp))) @@ -266,8 +242,6 @@ void hugetlb_mm_free_pgd(struct mm_struct *mm); /* to find an entry in the ioremap page-table-directory */ #define pgd_offset_i(address) (ioremap_pgd + pgd_index(address)) -#define pages_to_mb(x) ((x) >> (20-PAGE_SHIFT)) - /* * The following only work if pte_present() is true. * Undefined behaviour if not.. @@ -442,7 +416,7 @@ static inline void set_pte_at(struct mm_struct *mm, unsigned long addr, pte_clear(mm, addr, ptep); flush_tlb_pending(); } - *ptep = __pte(pte_val(pte)) & ~_PAGE_HPTEFLAGS; + *ptep = __pte(pte_val(pte) & ~_PAGE_HPTEFLAGS); } /* Set the dirty and/or accessed bits atomically in a linux PTE, this @@ -487,18 +461,13 @@ extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long addr, extern unsigned long ioremap_bot, ioremap_base; -#define USER_PGD_PTRS (PAGE_OFFSET >> PGDIR_SHIFT) -#define KERNEL_PGD_PTRS (PTRS_PER_PGD-USER_PGD_PTRS) - -#define pte_ERROR(e) \ - printk("%s:%d: bad pte %016lx.\n", __FILE__, __LINE__, pte_val(e)) #define pmd_ERROR(e) \ printk("%s:%d: bad pmd %08x.\n", __FILE__, __LINE__, pmd_val(e)) #define pgd_ERROR(e) \ printk("%s:%d: bad pgd %08x.\n", __FILE__, __LINE__, pgd_val(e)) -extern pgd_t swapper_pg_dir[1024]; -extern pgd_t ioremap_dir[1024]; +extern pgd_t swapper_pg_dir[]; +extern pgd_t ioremap_dir[]; extern void paging_init(void); @@ -540,43 +509,11 @@ extern void update_mmu_cache(struct vm_area_struct *, unsigned long, pte_t); */ #define kern_addr_valid(addr) (1) -#define io_remap_page_range(vma, vaddr, paddr, size, prot) \ - remap_pfn_range(vma, vaddr, (paddr) >> PAGE_SHIFT, size, prot) - #define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \ remap_pfn_range(vma, vaddr, pfn, size, prot) -#define MK_IOSPACE_PFN(space, pfn) (pfn) -#define GET_IOSPACE(pfn) 0 -#define GET_PFN(pfn) (pfn) - void pgtable_cache_init(void); -extern void hpte_init_native(void); -extern void hpte_init_lpar(void); -extern void hpte_init_iSeries(void); - -/* imalloc region types */ -#define IM_REGION_UNUSED 0x1 -#define IM_REGION_SUBSET 0x2 -#define IM_REGION_EXISTS 0x4 -#define IM_REGION_OVERLAP 0x8 -#define IM_REGION_SUPERSET 0x10 - -extern struct vm_struct * im_get_free_area(unsigned long size); -extern struct vm_struct * im_get_area(unsigned long v_addr, unsigned long size, - int region_type); -unsigned long im_free(void *addr); - -extern long pSeries_lpar_hpte_insert(unsigned long hpte_group, - unsigned long va, unsigned long prpn, - int secondary, unsigned long hpteflags, - int bolted, int large); - -extern long native_hpte_insert(unsigned long hpte_group, unsigned long va, - unsigned long prpn, int secondary, - unsigned long hpteflags, int bolted, int large); - /* * find_linux_pte returns the address of a linux pte for a given * effective address and directory. If not found, it returns zero. -- cgit v1.2.2