| #ifndef __UM_PAGE_H |
| #define __UM_PAGE_H |
| |
| struct page; |
| |
| #include "asm/arch/page.h" |
| #include "asm/bug.h" |
| |
| #undef __pa |
| #undef __va |
| #undef pfn_to_page |
| #undef page_to_pfn |
| #undef virt_to_page |
| #undef pfn_valid |
| #undef virt_addr_valid |
| #undef VALID_PAGE |
| #undef PAGE_OFFSET |
| #undef KERNELBASE |
| |
| extern unsigned long uml_physmem; |
| |
| #define PAGE_OFFSET (uml_physmem) |
| #define KERNELBASE PAGE_OFFSET |
| |
| #define __va_space (8*1024*1024) |
| |
| extern unsigned long region_pa(void *virt); |
| extern void *region_va(unsigned long phys); |
| |
| #define __pa(virt) region_pa((void *) (virt)) |
| #define __va(phys) region_va((unsigned long) (phys)) |
| |
| extern unsigned long page_to_pfn(struct page *page); |
| extern struct page *pfn_to_page(unsigned long pfn); |
| |
| extern struct page *phys_to_page(unsigned long phys); |
| |
| #define virt_to_page(v) (phys_to_page(__pa(v))) |
| |
| extern struct page *page_mem_map(struct page *page); |
| |
| #define pfn_valid(pfn) (page_mem_map(pfn_to_page(pfn)) != NULL) |
| #define virt_addr_valid(v) pfn_valid(__pa(v) >> PAGE_SHIFT) |
| |
| extern struct page *arch_validate(struct page *page, int mask, int order); |
| #define HAVE_ARCH_VALIDATE |
| |
| #endif |
