forked from Minki/linux
5b17e1cd89
The current asm-generic/page.h only contains the get_order function, and asm-generic/uaccess.h only implements unaligned accesses. This renames the file to getorder.h and uaccess-unaligned.h to make room for new page.h and uaccess.h file that will be usable by all simple (e.g. nommu) architectures. Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
#ifndef _ASM_POWERPC_PAGE_32_H
|
|
#define _ASM_POWERPC_PAGE_32_H
|
|
|
|
#if defined(CONFIG_PHYSICAL_ALIGN) && (CONFIG_PHYSICAL_START != 0)
|
|
#if (CONFIG_PHYSICAL_START % CONFIG_PHYSICAL_ALIGN) != 0
|
|
#error "CONFIG_PHYSICAL_START must be a multiple of CONFIG_PHYSICAL_ALIGN"
|
|
#endif
|
|
#endif
|
|
|
|
#define VM_DATA_DEFAULT_FLAGS VM_DATA_DEFAULT_FLAGS32
|
|
|
|
#ifdef CONFIG_NOT_COHERENT_CACHE
|
|
#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES
|
|
#endif
|
|
|
|
#ifdef CONFIG_PTE_64BIT
|
|
#define PTE_FLAGS_OFFSET 4 /* offset of PTE flags, in bytes */
|
|
#else
|
|
#define PTE_FLAGS_OFFSET 0
|
|
#endif
|
|
|
|
#ifdef CONFIG_PPC_256K_PAGES
|
|
#define PTE_SHIFT (PAGE_SHIFT - PTE_T_LOG2 - 2) /* 1/4 of a page */
|
|
#else
|
|
#define PTE_SHIFT (PAGE_SHIFT - PTE_T_LOG2) /* full page */
|
|
#endif
|
|
|
|
#ifndef __ASSEMBLY__
|
|
/*
|
|
* The basic type of a PTE - 64 bits for those CPUs with > 32 bit
|
|
* physical addressing.
|
|
*/
|
|
#ifdef CONFIG_PTE_64BIT
|
|
typedef unsigned long long pte_basic_t;
|
|
#else
|
|
typedef unsigned long pte_basic_t;
|
|
#endif
|
|
|
|
struct page;
|
|
extern void clear_pages(void *page, int order);
|
|
static inline void clear_page(void *page) { clear_pages(page, 0); }
|
|
extern void copy_page(void *to, void *from);
|
|
|
|
#include <asm-generic/getorder.h>
|
|
|
|
#define PGD_T_LOG2 (__builtin_ffs(sizeof(pgd_t)) - 1)
|
|
#define PTE_T_LOG2 (__builtin_ffs(sizeof(pte_t)) - 1)
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
#endif /* _ASM_POWERPC_PAGE_32_H */
|