| /* $Id: page.h,v 1.38 2001/11/30 01:04:10 davem Exp $ */ |
| |
| #ifndef _SPARC64_PAGE_H |
| #define _SPARC64_PAGE_H |
| |
| #define PAGE_SHIFT 13 |
| #ifndef __ASSEMBLY__ |
| /* I have my suspicions... -DaveM */ |
| #define PAGE_SIZE (1UL << PAGE_SHIFT) |
| #else |
| #define PAGE_SIZE (1 << PAGE_SHIFT) |
| #endif |
| |
| #define PAGE_MASK (~(PAGE_SIZE-1)) |
| |
| |
| #ifdef __KERNEL__ |
| |
| #ifndef __ASSEMBLY__ |
| |
| #ifdef CONFIG_DEBUG_BUGVERBOSE |
| extern void do_BUG(const char *file, int line); |
| #define BUG() do { \ |
| do_BUG(__FILE__, __LINE__); \ |
| __builtin_trap(); \ |
| } while (0) |
| #else |
| #define BUG() __builtin_trap() |
| #endif |
| |
| #define PAGE_BUG(page) BUG() |
| |
| /* Sparc64 is slow at multiplication, we prefer to use some extra space. */ |
| #define WANT_PAGE_VIRTUAL 1 |
| |
| extern void _clear_page(void *page); |
| #define clear_page(X) _clear_page((void *)(X)) |
| extern void clear_user_page(void *page, unsigned long vaddr); |
| #define copy_page(X,Y) memcpy((void *)(X), (void *)(Y), PAGE_SIZE) |
| extern void copy_user_page(void *to, void *from, unsigned long vaddr); |
| |
| /* GROSS, defining this makes gcc pass these types as aggregates, |
| * and thus on the stack, turn this crap off... -DaveM |
| */ |
| |
| /* #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 ctxd; } ctxd_t; |
| typedef struct { unsigned long pgprot; } pgprot_t; |
| typedef struct { unsigned long iopgprot; } iopgprot_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 ctxd_val(x) ((x).ctxd) |
| #define pgprot_val(x) ((x).pgprot) |
| #define iopgprot_val(x) ((x).iopgprot) |
| |
| #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 __ctxd(x) ((ctxd_t) { (x) } ) |
| #define __pgprot(x) ((pgprot_t) { (x) } ) |
| #define __iopgprot(x) ((iopgprot_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 ctxd_t; |
| typedef unsigned long pgprot_t; |
| typedef unsigned long iopgprot_t; |
| |
| #define pte_val(x) (x) |
| #define iopte_val(x) (x) |
| #define pmd_val(x) (x) |
| #define pgd_val(x) (x) |
| #define ctxd_val(x) (x) |
| #define pgprot_val(x) (x) |
| #define iopgprot_val(x) (x) |
| |
| #define __pte(x) (x) |
| #define __iopte(x) (x) |
| #define __pmd(x) (x) |
| #define __pgd(x) (x) |
| #define __ctxd(x) (x) |
| #define __pgprot(x) (x) |
| #define __iopgprot(x) (x) |
| |
| #endif /* (STRICT_MM_TYPECHECKS) */ |
| |
| #define TASK_UNMAPPED_BASE ((current->thread.flags & SPARC_FLAG_32BIT) ? \ |
| (0x0000000070000000UL) : (PAGE_OFFSET)) |
| |
| #endif /* !(__ASSEMBLY__) */ |
| |
| /* to align the pointer to the (next) page boundary */ |
| #define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK) |
| |
| #ifndef __ASSEMBLY__ |
| /* Do prdele, look what happens to be in %g4... */ |
| register unsigned long PAGE_OFFSET asm("g4"); |
| #else |
| #define PAGE_OFFSET 0xFFFFF80000000000 |
| #endif |
| |
| #define __pa(x) ((unsigned long)(x) - PAGE_OFFSET) |
| #define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET)) |
| #define virt_to_page(kaddr) (mem_map + ((__pa(kaddr)-phys_base) >> PAGE_SHIFT)) |
| #define VALID_PAGE(page) ((page - mem_map) < max_mapnr) |
| |
| #define virt_to_phys __pa |
| #define phys_to_virt __va |
| |
| #ifndef __ASSEMBLY__ |
| |
| /* 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 */ |
| extern __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) */ |