[deliverable/linux.git] / include / asm-alpha / mmzone.h

/*
 * Written by Kanoj Sarcar (kanoj@sgi.com) Aug 99
 * Adapted for the alpha wildfire architecture Jan 2001.
 */
#ifndef _ASM_MMZONE_H_
#define _ASM_MMZONE_H_

#include <linux/config.h>
#include <asm/smp.h>

struct bootmem_data_t; /* stupid forward decl. */

/*
 * Following are macros that are specific to this numa platform.
 */

extern pg_data_t node_data[];

#define alpha_pa_to_nid(pa)		\
        (alpha_mv.pa_to_nid 		\
	 ? alpha_mv.pa_to_nid(pa)	\
	 : (0))
#define node_mem_start(nid)		\
        (alpha_mv.node_mem_start 	\
	 ? alpha_mv.node_mem_start(nid) \
	 : (0UL))
#define node_mem_size(nid)		\
        (alpha_mv.node_mem_size 	\
	 ? alpha_mv.node_mem_size(nid) 	\
	 : ((nid) ? (0UL) : (~0UL)))

#define pa_to_nid(pa)		alpha_pa_to_nid(pa)
#define NODE_DATA(nid)		(&node_data[(nid)])

#define node_localnr(pfn, nid)	((pfn) - NODE_DATA(nid)->node_start_pfn)

#if 1
#define PLAT_NODE_DATA_LOCALNR(p, n)	\
	(((p) >> PAGE_SHIFT) - PLAT_NODE_DATA(n)->gendata.node_start_pfn)
#else
static inline unsigned long
PLAT_NODE_DATA_LOCALNR(unsigned long p, int n)
{
	unsigned long temp;
	temp = p >> PAGE_SHIFT;
	return temp - PLAT_NODE_DATA(n)->gendata.node_start_pfn;
}
#endif

#ifdef CONFIG_DISCONTIGMEM

/*
 * Following are macros that each numa implementation must define.
 */

/*
 * Given a kernel address, find the home node of the underlying memory.
 */
#define kvaddr_to_nid(kaddr)	pa_to_nid(__pa(kaddr))
#define node_start_pfn(nid)	(NODE_DATA(nid)->node_start_pfn)

/*
 * Given a kaddr, LOCAL_BASE_ADDR finds the owning node of the memory
 * and returns the kaddr corresponding to first physical page in the
 * node's mem_map.
 */
#define LOCAL_BASE_ADDR(kaddr)						  \
    ((unsigned long)__va(NODE_DATA(kvaddr_to_nid(kaddr))->node_start_pfn  \
			 << PAGE_SHIFT))

/* XXX: FIXME -- wli */
#define kern_addr_valid(kaddr)	(0)

#define virt_to_page(kaddr)	pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)

#define VALID_PAGE(page)	(((page) - mem_map) < max_mapnr)

#define pmd_page(pmd)		(pfn_to_page(pmd_val(pmd) >> 32))
#define pte_pfn(pte)		(pte_val(pte) >> 32)

#define mk_pte(page, pgprot)						     \
({								 	     \
	pte_t pte;                                                           \
	unsigned long pfn;                                                   \
									     \
	pfn = page_to_pfn(page) << 32; \
	pte_val(pte) = pfn | pgprot_val(pgprot);			     \
									     \
	pte;								     \
})

#define pte_page(x)							\
({									\
       	unsigned long kvirt;						\
	struct page * __xx;						\
									\
	kvirt = (unsigned long)__va(pte_val(x) >> (32-PAGE_SHIFT));	\
	__xx = virt_to_page(kvirt);					\
									\
	__xx;                                                           \
})

#define page_to_pa(page)						\
	(page_to_pfn(page) << PAGE_SHIFT)

#define pfn_to_nid(pfn)		pa_to_nid(((u64)(pfn) << PAGE_SHIFT))
#define pfn_valid(pfn)							\
	(((pfn) - node_start_pfn(pfn_to_nid(pfn))) <			\
	 node_spanned_pages(pfn_to_nid(pfn)))					\

#define virt_addr_valid(kaddr)	pfn_valid((__pa(kaddr) >> PAGE_SHIFT))

#endif /* CONFIG_DISCONTIGMEM */

#endif /* _ASM_MMZONE_H_ */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Written by Kanoj Sarcar (kanoj@sgi.com) Aug 99
	3	* Adapted for the alpha wildfire architecture Jan 2001.
	4	*/
	5	#ifndef _ASM_MMZONE_H_
	6	#define _ASM_MMZONE_H_
	7
	8	#include <linux/config.h>
	9	#include <asm/smp.h>
	10
	11	struct bootmem_data_t; /* stupid forward decl. */
	12
	13	/*
	14	* Following are macros that are specific to this numa platform.
	15	*/
	16
	17	extern pg_data_t node_data[];
	18
	19	#define alpha_pa_to_nid(pa) \
	20	(alpha_mv.pa_to_nid \
	21	? alpha_mv.pa_to_nid(pa) \
	22	: (0))
	23	#define node_mem_start(nid) \
	24	(alpha_mv.node_mem_start \
	25	? alpha_mv.node_mem_start(nid) \
	26	: (0UL))
	27	#define node_mem_size(nid) \
	28	(alpha_mv.node_mem_size \
	29	? alpha_mv.node_mem_size(nid) \
	30	: ((nid) ? (0UL) : (~0UL)))
	31
	32	#define pa_to_nid(pa) alpha_pa_to_nid(pa)
	33	#define NODE_DATA(nid) (&node_data[(nid)])
	34
	35	#define node_localnr(pfn, nid) ((pfn) - NODE_DATA(nid)->node_start_pfn)
	36
	37	#if 1
	38	#define PLAT_NODE_DATA_LOCALNR(p, n) \
	39	(((p) >> PAGE_SHIFT) - PLAT_NODE_DATA(n)->gendata.node_start_pfn)
	40	#else
	41	static inline unsigned long
	42	PLAT_NODE_DATA_LOCALNR(unsigned long p, int n)
	43	{
	44	unsigned long temp;
	45	temp = p >> PAGE_SHIFT;
	46	return temp - PLAT_NODE_DATA(n)->gendata.node_start_pfn;
	47	}
	48	#endif
	49
	50	#ifdef CONFIG_DISCONTIGMEM
	51
	52	/*
	53	* Following are macros that each numa implementation must define.
	54	*/
	55
	56	/*
	57	* Given a kernel address, find the home node of the underlying memory.
	58	*/
	59	#define kvaddr_to_nid(kaddr) pa_to_nid(__pa(kaddr))
1da177e4 LT	60	#define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn)
1da177e4 LT	61
1da177e4 LT	62	/*
	63	* Given a kaddr, LOCAL_BASE_ADDR finds the owning node of the memory
	64	* and returns the kaddr corresponding to first physical page in the
	65	* node's mem_map.
	66	*/
	67	#define LOCAL_BASE_ADDR(kaddr) \
	68	((unsigned long)__va(NODE_DATA(kvaddr_to_nid(kaddr))->node_start_pfn \
	69	<< PAGE_SHIFT))
	70
	71	/* XXX: FIXME -- wli */
	72	#define kern_addr_valid(kaddr) (0)
	73
	74	#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
	75
	76	#define VALID_PAGE(page) (((page) - mem_map) < max_mapnr)
	77
	78	#define pmd_page(pmd) (pfn_to_page(pmd_val(pmd) >> 32))
	79	#define pte_pfn(pte) (pte_val(pte) >> 32)
	80
	81	#define mk_pte(page, pgprot) \
	82	({ \
	83	pte_t pte; \
	84	unsigned long pfn; \
	85	\
a0140c1d	86	pfn = page_to_pfn(page) << 32; \
1da177e4 LT	87	pte_val(pte) = pfn \| pgprot_val(pgprot); \
	88	\
	89	pte; \
	90	})
	91
	92	#define pte_page(x) \
	93	({ \
	94	unsigned long kvirt; \
	95	struct page * __xx; \
	96	\
	97	kvirt = (unsigned long)__va(pte_val(x) >> (32-PAGE_SHIFT)); \
	98	__xx = virt_to_page(kvirt); \
	99	\
	100	__xx; \
	101	})
	102
1da177e4	103	#define page_to_pa(page) \
1c05dda2	104	(page_to_pfn(page) << PAGE_SHIFT)
1da177e4 LT	105
	106	#define pfn_to_nid(pfn) pa_to_nid(((u64)(pfn) << PAGE_SHIFT))
	107	#define pfn_valid(pfn) \
	108	(((pfn) - node_start_pfn(pfn_to_nid(pfn))) < \
	109	node_spanned_pages(pfn_to_nid(pfn))) \
	110
	111	#define virt_addr_valid(kaddr) pfn_valid((__pa(kaddr) >> PAGE_SHIFT))
	112
	113	#endif /* CONFIG_DISCONTIGMEM */
	114
	115	#endif /* _ASM_MMZONE_H_ */