[deliverable/linux.git] / arch / x86 / include / asm / page_64_types.h

#ifndef _ASM_X86_PAGE_64_DEFS_H
#define _ASM_X86_PAGE_64_DEFS_H

#define THREAD_ORDER	1
#define THREAD_SIZE  (PAGE_SIZE << THREAD_ORDER)
#define CURRENT_MASK (~(THREAD_SIZE - 1))

#define EXCEPTION_STACK_ORDER 0
#define EXCEPTION_STKSZ (PAGE_SIZE << EXCEPTION_STACK_ORDER)

#define DEBUG_STACK_ORDER (EXCEPTION_STACK_ORDER + 1)
#define DEBUG_STKSZ (PAGE_SIZE << DEBUG_STACK_ORDER)

#define IRQ_STACK_ORDER 2
#define IRQ_STACK_SIZE (PAGE_SIZE << IRQ_STACK_ORDER)

#define STACKFAULT_STACK 1
#define DOUBLEFAULT_STACK 2
#define NMI_STACK 3
#define DEBUG_STACK 4
#define MCE_STACK 5
#define N_EXCEPTION_STACKS 5  /* hw limit: 7 */

#define PUD_PAGE_SIZE		(_AC(1, UL) << PUD_SHIFT)
#define PUD_PAGE_MASK		(~(PUD_PAGE_SIZE-1))

/*
 * Set __PAGE_OFFSET to the most negative possible address +
 * PGDIR_SIZE*16 (pgd slot 272).  The gap is to allow a space for a
 * hypervisor to fit.  Choosing 16 slots here is arbitrary, but it's
 * what Xen requires.
 */
#define __PAGE_OFFSET           _AC(0xffff880000000000, UL)

#define __PHYSICAL_START	((CONFIG_PHYSICAL_START +	 	\
				  (CONFIG_PHYSICAL_ALIGN - 1)) &	\
				 ~(CONFIG_PHYSICAL_ALIGN - 1))

#define __START_KERNEL		(__START_KERNEL_map + __PHYSICAL_START)
#define __START_KERNEL_map	_AC(0xffffffff80000000, UL)

/* See Documentation/x86/x86_64/mm.txt for a description of the memory map. */
#define __PHYSICAL_MASK_SHIFT	46
#define __VIRTUAL_MASK_SHIFT	47

/*
 * Kernel image size is limited to 512 MB (see level2_kernel_pgt in
 * arch/x86/kernel/head_64.S), and it is mapped here:
 */
#define KERNEL_IMAGE_SIZE	(512 * 1024 * 1024)
#define KERNEL_IMAGE_START	_AC(0xffffffff80000000, UL)

#ifndef __ASSEMBLY__
void clear_page(void *page);
void copy_page(void *to, void *from);

/* duplicated to the one in bootmem.h */
extern unsigned long max_pfn;
extern unsigned long phys_base;

extern unsigned long __phys_addr(unsigned long);
#define __phys_reloc_hide(x)	(x)

#define vmemmap ((struct page *)VMEMMAP_START)

extern void init_extra_mapping_uc(unsigned long phys, unsigned long size);
extern void init_extra_mapping_wb(unsigned long phys, unsigned long size);

#endif	/* !__ASSEMBLY__ */

#ifdef CONFIG_FLATMEM
#define pfn_valid(pfn)          ((pfn) < max_pfn)
#endif

#endif /* _ASM_X86_PAGE_64_DEFS_H */
Commit	Line	Data
51c78eb3 JF	1	#ifndef _ASM_X86_PAGE_64_DEFS_H
	2	#define _ASM_X86_PAGE_64_DEFS_H
	3
51c78eb3 JF	4	#define THREAD_ORDER 1
	5	#define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER)
	6	#define CURRENT_MASK (~(THREAD_SIZE - 1))
	7
	8	#define EXCEPTION_STACK_ORDER 0
	9	#define EXCEPTION_STKSZ (PAGE_SIZE << EXCEPTION_STACK_ORDER)
	10
	11	#define DEBUG_STACK_ORDER (EXCEPTION_STACK_ORDER + 1)
	12	#define DEBUG_STKSZ (PAGE_SIZE << DEBUG_STACK_ORDER)
	13
	14	#define IRQ_STACK_ORDER 2
	15	#define IRQ_STACK_SIZE (PAGE_SIZE << IRQ_STACK_ORDER)
	16
	17	#define STACKFAULT_STACK 1
	18	#define DOUBLEFAULT_STACK 2
	19	#define NMI_STACK 3
	20	#define DEBUG_STACK 4
	21	#define MCE_STACK 5
	22	#define N_EXCEPTION_STACKS 5 /* hw limit: 7 */
	23
	24	#define PUD_PAGE_SIZE (_AC(1, UL) << PUD_SHIFT)
	25	#define PUD_PAGE_MASK (~(PUD_PAGE_SIZE-1))
	26
	27	/*
	28	* Set __PAGE_OFFSET to the most negative possible address +
	29	* PGDIR_SIZE*16 (pgd slot 272). The gap is to allow a space for a
	30	* hypervisor to fit. Choosing 16 slots here is arbitrary, but it's
	31	* what Xen requires.
	32	*/
	33	#define __PAGE_OFFSET _AC(0xffff880000000000, UL)
	34
c4f68236 PA	35	#define __PHYSICAL_START ((CONFIG_PHYSICAL_START + \
	36	(CONFIG_PHYSICAL_ALIGN - 1)) & \
	37	~(CONFIG_PHYSICAL_ALIGN - 1))
51c78eb3 JF	38
	39	#define __START_KERNEL (__START_KERNEL_map + __PHYSICAL_START)
	40	#define __START_KERNEL_map _AC(0xffffffff80000000, UL)
	41
c898faf9	42	/* See Documentation/x86/x86_64/mm.txt for a description of the memory map. */
51c78eb3	43	#define __PHYSICAL_MASK_SHIFT 46
9063c61f	44	#define __VIRTUAL_MASK_SHIFT 47
51c78eb3 JF	45
	46	/*
	47	* Kernel image size is limited to 512 MB (see level2_kernel_pgt in
	48	* arch/x86/kernel/head_64.S), and it is mapped here:
	49	*/
	50	#define KERNEL_IMAGE_SIZE (512 * 1024 * 1024)
	51	#define KERNEL_IMAGE_START _AC(0xffffffff80000000, UL)
	52
	53	#ifndef __ASSEMBLY__
	54	void clear_page(void *page);
	55	void copy_page(void to, void from);
	56
	57	/* duplicated to the one in bootmem.h */
	58	extern unsigned long max_pfn;
	59	extern unsigned long phys_base;
	60
	61	extern unsigned long __phys_addr(unsigned long);
	62	#define __phys_reloc_hide(x) (x)
	63
51c78eb3 JF	64	#define vmemmap ((struct page *)VMEMMAP_START)
51c78eb3 JF	65
51c78eb3 JF	66	extern void init_extra_mapping_uc(unsigned long phys, unsigned long size);
	67	extern void init_extra_mapping_wb(unsigned long phys, unsigned long size);
	68
	69	#endif /* !__ASSEMBLY__ */
	70
	71	#ifdef CONFIG_FLATMEM
	72	#define pfn_valid(pfn) ((pfn) < max_pfn)
	73	#endif
	74
	75	#endif /* _ASM_X86_PAGE_64_DEFS_H */