1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * arch/arm/include/asm/map.h
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright (C) 1999-2000 Russell King
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * Page table mapping constructs and function prototypes
8*4882a593Smuzhiyun */
9*4882a593Smuzhiyun #ifndef __ASM_MACH_MAP_H
10*4882a593Smuzhiyun #define __ASM_MACH_MAP_H
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun #include <asm/io.h>
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun struct map_desc {
15*4882a593Smuzhiyun unsigned long virtual;
16*4882a593Smuzhiyun unsigned long pfn;
17*4882a593Smuzhiyun unsigned long length;
18*4882a593Smuzhiyun unsigned int type;
19*4882a593Smuzhiyun };
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun /* types 0-3 are defined in asm/io.h */
22*4882a593Smuzhiyun enum {
23*4882a593Smuzhiyun MT_UNCACHED = 4,
24*4882a593Smuzhiyun MT_CACHECLEAN,
25*4882a593Smuzhiyun MT_MINICLEAN,
26*4882a593Smuzhiyun MT_LOW_VECTORS,
27*4882a593Smuzhiyun MT_HIGH_VECTORS,
28*4882a593Smuzhiyun MT_MEMORY_RWX,
29*4882a593Smuzhiyun MT_MEMORY_RW,
30*4882a593Smuzhiyun MT_MEMORY_RO,
31*4882a593Smuzhiyun MT_ROM,
32*4882a593Smuzhiyun MT_MEMORY_RWX_NONCACHED,
33*4882a593Smuzhiyun MT_MEMORY_RW_DTCM,
34*4882a593Smuzhiyun MT_MEMORY_RWX_ITCM,
35*4882a593Smuzhiyun MT_MEMORY_RW_SO,
36*4882a593Smuzhiyun MT_MEMORY_DMA_READY,
37*4882a593Smuzhiyun };
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun #ifdef CONFIG_MMU
40*4882a593Smuzhiyun extern void iotable_init(struct map_desc *, int);
41*4882a593Smuzhiyun extern void vm_reserve_area_early(unsigned long addr, unsigned long size,
42*4882a593Smuzhiyun void *caller);
43*4882a593Smuzhiyun extern void create_mapping_late(struct mm_struct *mm, struct map_desc *md,
44*4882a593Smuzhiyun bool ng);
45*4882a593Smuzhiyun
46*4882a593Smuzhiyun #ifdef CONFIG_DEBUG_LL
47*4882a593Smuzhiyun extern void debug_ll_addr(unsigned long *paddr, unsigned long *vaddr);
48*4882a593Smuzhiyun extern void debug_ll_io_init(void);
49*4882a593Smuzhiyun #else
debug_ll_io_init(void)50*4882a593Smuzhiyun static inline void debug_ll_io_init(void) {}
51*4882a593Smuzhiyun #endif
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun struct mem_type;
54*4882a593Smuzhiyun extern const struct mem_type *get_mem_type(unsigned int type);
55*4882a593Smuzhiyun /*
56*4882a593Smuzhiyun * external interface to remap single page with appropriate type
57*4882a593Smuzhiyun */
58*4882a593Smuzhiyun extern int ioremap_page(unsigned long virt, unsigned long phys,
59*4882a593Smuzhiyun const struct mem_type *mtype);
60*4882a593Smuzhiyun #else
61*4882a593Smuzhiyun #define iotable_init(map,num) do { } while (0)
62*4882a593Smuzhiyun #define vm_reserve_area_early(a,s,c) do { } while (0)
63*4882a593Smuzhiyun #endif
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun #endif
66