[mirror_ubuntu-jammy-kernel.git] / arch / alpha / include / asm / mmzone.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * 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 <asm/smp.h>

/*
 * 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))

/*
 * 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 -- nyc */
#define kern_addr_valid(kaddr)	(0)

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

#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
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1da177e4 LT	2	/*
	3	* Written by Kanoj Sarcar (kanoj@sgi.com) Aug 99
	4	* Adapted for the alpha wildfire architecture Jan 2001.
	5	*/
	6	#ifndef _ASM_MMZONE_H_
	7	#define _ASM_MMZONE_H_
	8
1da177e4 LT	9	#include <asm/smp.h>
1da177e4 LT	10
1da177e4 LT	11	/*
	12	* Following are macros that are specific to this numa platform.
	13	*/
	14
	15	extern pg_data_t node_data[];
	16
	17	#define alpha_pa_to_nid(pa) \
	18	(alpha_mv.pa_to_nid \
	19	? alpha_mv.pa_to_nid(pa) \
	20	: (0))
	21	#define node_mem_start(nid) \
	22	(alpha_mv.node_mem_start \
	23	? alpha_mv.node_mem_start(nid) \
	24	: (0UL))
	25	#define node_mem_size(nid) \
	26	(alpha_mv.node_mem_size \
	27	? alpha_mv.node_mem_size(nid) \
	28	: ((nid) ? (0UL) : (~0UL)))
	29
	30	#define pa_to_nid(pa) alpha_pa_to_nid(pa)
	31	#define NODE_DATA(nid) (&node_data[(nid)])
	32
	33	#define node_localnr(pfn, nid) ((pfn) - NODE_DATA(nid)->node_start_pfn)
	34
	35	#if 1
	36	#define PLAT_NODE_DATA_LOCALNR(p, n) \
	37	(((p) >> PAGE_SHIFT) - PLAT_NODE_DATA(n)->gendata.node_start_pfn)
	38	#else
	39	static inline unsigned long
	40	PLAT_NODE_DATA_LOCALNR(unsigned long p, int n)
	41	{
	42	unsigned long temp;
	43	temp = p >> PAGE_SHIFT;
	44	return temp - PLAT_NODE_DATA(n)->gendata.node_start_pfn;
	45	}
	46	#endif
	47
	48	#ifdef CONFIG_DISCONTIGMEM
	49
	50	/*
	51	* Following are macros that each numa implementation must define.
	52	*/
	53
	54	/*
	55	* Given a kernel address, find the home node of the underlying memory.
	56	*/
	57	#define kvaddr_to_nid(kaddr) pa_to_nid(__pa(kaddr))
1da177e4	58
1da177e4 LT	59	/*
	60	* Given a kaddr, LOCAL_BASE_ADDR finds the owning node of the memory
	61	* and returns the kaddr corresponding to first physical page in the
	62	* node's mem_map.
	63	*/
	64	#define LOCAL_BASE_ADDR(kaddr) \
	65	((unsigned long)__va(NODE_DATA(kvaddr_to_nid(kaddr))->node_start_pfn \
	66	<< PAGE_SHIFT))
	67
6d49e352	68	/* XXX: FIXME -- nyc */
1da177e4 LT	69	#define kern_addr_valid(kaddr) (0)
	70
	71	#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
	72
1da177e4 LT	73	#define pmd_page(pmd) (pfn_to_page(pmd_val(pmd) >> 32))
	74	#define pte_pfn(pte) (pte_val(pte) >> 32)
	75
	76	#define mk_pte(page, pgprot) \
	77	({ \
	78	pte_t pte; \
	79	unsigned long pfn; \
	80	\
a0140c1d	81	pfn = page_to_pfn(page) << 32; \
1da177e4 LT	82	pte_val(pte) = pfn \| pgprot_val(pgprot); \
	83	\
	84	pte; \
	85	})
	86
	87	#define pte_page(x) \
	88	({ \
	89	unsigned long kvirt; \
	90	struct page * __xx; \
	91	\
	92	kvirt = (unsigned long)__va(pte_val(x) >> (32-PAGE_SHIFT)); \
	93	__xx = virt_to_page(kvirt); \
	94	\
	95	__xx; \
	96	})
	97
1da177e4	98	#define page_to_pa(page) \
1c05dda2	99	(page_to_pfn(page) << PAGE_SHIFT)
1da177e4 LT	100
	101	#define pfn_to_nid(pfn) pa_to_nid(((u64)(pfn) << PAGE_SHIFT))
	102	#define pfn_valid(pfn) \
	103	(((pfn) - node_start_pfn(pfn_to_nid(pfn))) < \
	104	node_spanned_pages(pfn_to_nid(pfn))) \
	105
	106	#define virt_addr_valid(kaddr) pfn_valid((__pa(kaddr) >> PAGE_SHIFT))
	107
	108	#endif /* CONFIG_DISCONTIGMEM */
	109
	110	#endif /* _ASM_MMZONE_H_ */