From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- include/asm-sparc64/page.h | 172 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 172 insertions(+) create mode 100644 include/asm-sparc64/page.h (limited to 'include/asm-sparc64/page.h') diff --git a/include/asm-sparc64/page.h b/include/asm-sparc64/page.h new file mode 100644 index 00000000000..219ea043a14 --- /dev/null +++ b/include/asm-sparc64/page.h @@ -0,0 +1,172 @@ +/* $Id: page.h,v 1.39 2002/02/09 19:49:31 davem Exp $ */ + +#ifndef _SPARC64_PAGE_H +#define _SPARC64_PAGE_H + +#include +#include + +#if defined(CONFIG_SPARC64_PAGE_SIZE_8KB) +#define PAGE_SHIFT 13 +#elif defined(CONFIG_SPARC64_PAGE_SIZE_64KB) +#define PAGE_SHIFT 16 +#elif defined(CONFIG_SPARC64_PAGE_SIZE_512KB) +#define PAGE_SHIFT 19 +#elif defined(CONFIG_SPARC64_PAGE_SIZE_4MB) +#define PAGE_SHIFT 22 +#else +#error No page size specified in kernel configuration +#endif + +#define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) +#define PAGE_MASK (~(PAGE_SIZE-1)) + +#ifdef __KERNEL__ + +#ifndef __ASSEMBLY__ + +extern void _clear_page(void *page); +#define clear_page(X) _clear_page((void *)(X)) +struct page; +extern void clear_user_page(void *addr, unsigned long vaddr, struct page *page); +#define copy_page(X,Y) memcpy((void *)(X), (void *)(Y), PAGE_SIZE) +extern void copy_user_page(void *to, void *from, unsigned long vaddr, struct page *topage); + +/* Unlike sparc32, sparc64's parameter passing API is more + * sane in that structures which as small enough are passed + * in registers instead of on the stack. Thus, setting + * STRICT_MM_TYPECHECKS does not generate worse code so + * let's enable it to get the type checking. + */ + +#define STRICT_MM_TYPECHECKS + +#ifdef STRICT_MM_TYPECHECKS +/* These are used to make use of C type-checking.. */ +typedef struct { unsigned long pte; } pte_t; +typedef struct { unsigned long iopte; } iopte_t; +typedef struct { unsigned int pmd; } pmd_t; +typedef struct { unsigned int pgd; } pgd_t; +typedef struct { unsigned long pgprot; } pgprot_t; + +#define pte_val(x) ((x).pte) +#define iopte_val(x) ((x).iopte) +#define pmd_val(x) ((x).pmd) +#define pgd_val(x) ((x).pgd) +#define pgprot_val(x) ((x).pgprot) + +#define __pte(x) ((pte_t) { (x) } ) +#define __iopte(x) ((iopte_t) { (x) } ) +#define __pmd(x) ((pmd_t) { (x) } ) +#define __pgd(x) ((pgd_t) { (x) } ) +#define __pgprot(x) ((pgprot_t) { (x) } ) + +#else +/* .. while these make it easier on the compiler */ +typedef unsigned long pte_t; +typedef unsigned long iopte_t; +typedef unsigned int pmd_t; +typedef unsigned int pgd_t; +typedef unsigned long pgprot_t; + +#define pte_val(x) (x) +#define iopte_val(x) (x) +#define pmd_val(x) (x) +#define pgd_val(x) (x) +#define pgprot_val(x) (x) + +#define __pte(x) (x) +#define __iopte(x) (x) +#define __pmd(x) (x) +#define __pgd(x) (x) +#define __pgprot(x) (x) + +#endif /* (STRICT_MM_TYPECHECKS) */ + +#if defined(CONFIG_HUGETLB_PAGE_SIZE_4MB) +#define HPAGE_SHIFT 22 +#elif defined(CONFIG_HUGETLB_PAGE_SIZE_512K) +#define HPAGE_SHIFT 19 +#elif defined(CONFIG_HUGETLB_PAGE_SIZE_64K) +#define HPAGE_SHIFT 16 +#endif + +#ifdef CONFIG_HUGETLB_PAGE +#define HPAGE_SIZE (_AC(1,UL) << HPAGE_SHIFT) +#define HPAGE_MASK (~(HPAGE_SIZE - 1UL)) +#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) +#endif + +#define TASK_UNMAPPED_BASE (test_thread_flag(TIF_32BIT) ? \ + (_AC(0x0000000070000000,UL)) : (PAGE_OFFSET)) + +#endif /* !(__ASSEMBLY__) */ + +/* to align the pointer to the (next) page boundary */ +#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK) + +/* We used to stick this into a hard-coded global register (%g4) + * but that does not make sense anymore. + */ +#define PAGE_OFFSET _AC(0xFFFFF80000000000,UL) + +#ifndef __ASSEMBLY__ + +#define __pa(x) ((unsigned long)(x) - PAGE_OFFSET) +#define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET)) + +/* PFNs are real physical page numbers. However, mem_map only begins to record + * per-page information starting at pfn_base. This is to handle systems where + * the first physical page in the machine is at some huge physical address, + * such as 4GB. This is common on a partitioned E10000, for example. + */ +extern struct page *pfn_to_page(unsigned long pfn); +extern unsigned long page_to_pfn(struct page *); + +#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr)>>PAGE_SHIFT) + +#define pfn_valid(pfn) (((pfn)-(pfn_base)) < max_mapnr) +#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) + +#define virt_to_phys __pa +#define phys_to_virt __va + +/* The following structure is used to hold the physical + * memory configuration of the machine. This is filled in + * probe_memory() and is later used by mem_init() to set up + * mem_map[]. We statically allocate SPARC_PHYS_BANKS of + * these structs, this is arbitrary. The entry after the + * last valid one has num_bytes==0. + */ + +struct sparc_phys_banks { + unsigned long base_addr; + unsigned long num_bytes; +}; + +#define SPARC_PHYS_BANKS 32 + +extern struct sparc_phys_banks sp_banks[SPARC_PHYS_BANKS]; + +/* Pure 2^n version of get_order */ +static __inline__ int get_order(unsigned long size) +{ + int order; + + size = (size-1) >> (PAGE_SHIFT-1); + order = -1; + do { + size >>= 1; + order++; + } while (size); + return order; +} + +#endif /* !(__ASSEMBLY__) */ + +#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ + VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) + +#endif /* !(__KERNEL__) */ + +#endif /* !(_SPARC64_PAGE_H) */ -- cgit v1.2.3