+++ /dev/null
-/*
- * linux/include/asm-m68k/cf_page.h
- *
- * Copyright 2007-2009 Freescale Semiconductor, Inc. All Rights Reserved.
- * Based on linux/include/asm-m68k/page.h
- *
- * 10/09/08 JKM: split Coldfire pieces into separate file
- */
-#ifndef __CF_PAGE__
-#define __CF_PAGE__
-
-#include <linux/const.h>
-#include <asm/setup.h>
-#include <asm/page_offset.h>
-
-/* Virtual base page location */
-#define PAGE_OFFSET (PAGE_OFFSET_RAW)
-
-/* PAGE_SHIFT determines the page size */
-#define PAGE_SHIFT (13) /* 8K pages */
-#define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT)
-#define PAGE_MASK (~(PAGE_SIZE-1))
-
-#define THREAD_SIZE PAGE_SIZE
-
-#ifndef __ASSEMBLY__
-#include <linux/compiler.h>
-#include <asm/module.h>
-
-#define get_user_page(vaddr) __get_free_page(GFP_KERNEL)
-#define free_user_page(page, addr) free_page(addr)
-
-#define clear_page(page) memset((page), 0, PAGE_SIZE)
-#define copy_page(to,from) memcpy((to), (from), PAGE_SIZE)
-
-#define clear_user_page(addr, vaddr, page) \
- do { clear_page(addr); \
- flush_dcache_page(page); \
- } while (0)
-
-#define copy_user_page(to, from, vaddr, page) \
- do { copy_page(to, from); \
- flush_dcache_page(page); \
- } while (0)
-
-/*
- * These are used to make use of C type-checking..
- */
-typedef struct { unsigned long pte; } pte_t;
-typedef struct { unsigned long pmd[16]; } pmd_t;
-typedef struct { unsigned long pgd; } pgd_t;
-typedef struct { unsigned long pgprot; } pgprot_t;
-typedef struct page *pgtable_t;
-
-#define pte_val(x) ((x).pte)
-#define pmd_val(x) ((&x)->pmd[0])
-#define pgd_val(x) ((x).pgd)
-#define pgprot_val(x) ((x).pgprot)
-
-#define __pte(x) ((pte_t) { (x) } )
-#define __pmd(x) ((pmd_t) { (x) } )
-#define __pgd(x) ((pgd_t) { (x) } )
-#define __pgprot(x) ((pgprot_t) { (x) } )
-
-/* to align the pointer to the (next) page boundary */
-/*Defined in linux/mm.h*/
-/*#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)*/
-
-extern unsigned long m68k_memoffset;
-
-#define WANT_PAGE_VIRTUAL
-
-extern unsigned long cf_dma_base;
-extern unsigned long cf_dma_end;
-
-/*
- * Convert a virt to a phys
- */
-static inline unsigned long ___pa(void *vaddr)
-{
-#if CONFIG_SDRAM_BASE != PAGE_OFFSET
- return (((unsigned long)vaddr & 0x0fffffff) + CONFIG_SDRAM_BASE);
-#else
- if ((unsigned long)vaddr >= CONFIG_DMA_BASE &&
- (unsigned long)vaddr < (CONFIG_DMA_BASE + CONFIG_DMA_SIZE)) {
- /* address is in carved out DMA range */
- return ((unsigned long)vaddr - CONFIG_DMA_BASE) + CONFIG_SDRAM_BASE;
- }
- else if ((unsigned long)vaddr >= PAGE_OFFSET &&
- (unsigned long)vaddr < (PAGE_OFFSET + CONFIG_SDRAM_SIZE)) {
- /* normal mapping */
- return ((unsigned long)vaddr - PAGE_OFFSET) + CONFIG_SDRAM_BASE;
- }
-
- return (unsigned long)vaddr;
-#endif
-}
-#define __pa(vaddr) ___pa((void *)(vaddr))
-
-/*
- * Convert a phys to a virt
- */
-static inline void *__va(unsigned long paddr)
-{
-#if CONFIG_SDRAM_BASE != PAGE_OFFSET
- return (void *)((paddr & 0x0fffffff) + PAGE_OFFSET);
-#else
- if (paddr >= cf_dma_base && paddr <= cf_dma_end) {
- /* mapped address for DMA */
- return (void *)((paddr - CONFIG_SDRAM_BASE) + CONFIG_DMA_BASE);
- }
- else if (paddr >= cf_dma_end &&
- paddr < (CONFIG_SDRAM_BASE + CONFIG_SDRAM_SIZE)) {
- /* normal mapping */
- return (void *)((paddr - CONFIG_SDRAM_BASE) + PAGE_OFFSET);
- }
- return (void *)paddr;
-#endif
-}
-
-/*
- * NOTE: virtual isn't really correct, actually it should be the offset into the
- * memory node, but we have no highmem, so that works for now.
- *
- * TODO: implement (fast) pfn<->pgdat_idx conversion functions, this makes lots
- * of the shifts unnecessary.
- *
- * PFNs are used to map physical pages. So PFN[0] maps to the base phys addr.
- */
-#define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT)
-#define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT)
-
-extern int m68k_virt_to_node_shift;
-
-#ifdef CONFIG_SINGLE_MEMORY_CHUNK
-#define __virt_to_node(addr) (&pg_data_map[0])
-#else
-extern struct pglist_data *pg_data_table[];
-
-static inline __attribute_const__ int __virt_to_node_shift(void)
-{
- return m68k_virt_to_node_shift;
-}
-
-#define __virt_to_node(addr) (pg_data_table[(unsigned long)(addr) >> __virt_to_node_shift()])
-#endif /* !CONFIG_SINGLE_MEMORY_CHUNK */
-
-#define virt_to_page(addr) ({ \
- pfn_to_page(virt_to_pfn(addr)); \
-})
-#define page_to_virt(page) ({ \
- pfn_to_virt(page_to_pfn(page)); \
-})
-
-#define pfn_to_page(pfn) ({ \
- unsigned long __pfn = (pfn); \
- struct pglist_data *pgdat; \
- pgdat = __virt_to_node((unsigned long)pfn_to_virt(__pfn)); \
- pgdat->node_mem_map + (__pfn - pgdat->node_start_pfn); \
-})
-#define page_to_pfn(_page) ({ \
- struct page *__p = (_page); \
- struct pglist_data *pgdat; \
- pgdat = &pg_data_map[page_to_nid(__p)]; \
- ((__p) - pgdat->node_mem_map) + pgdat->node_start_pfn; \
-})
-
-#define virt_addr_valid(kaddr) ( ((void *)(kaddr) >= (void *)PAGE_OFFSET && \
- (void *)(kaddr) < high_memory) || \
- ((void *)(kaddr) >= (void*)CONFIG_DMA_BASE && \
- (void *)(kaddr) < (void*)(CONFIG_DMA_BASE+CONFIG_DMA_SIZE)))
-
-#define pfn_valid(pfn) virt_addr_valid(pfn_to_virt(pfn))
-
-#endif /* __ASSEMBLY__ */
-
-#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
-#include <asm-generic/getorder.h>
-
-#ifdef CONFIG_VDSO
-#define __HAVE_ARCH_GATE_AREA
-#endif
-
-#endif /* __CF_PAGE__ */
projects / openwrt / svn-archive / archive.git / blobdiff