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git.ipfire.org Git - people/ms/u-boot.git/blob - arch/sandbox/include/asm/io.h
2 * Copyright (c) 2011 The Chromium OS Authors.
4 * SPDX-License-Identifier: GPL-2.0+
7 #ifndef __SANDBOX_ASM_IO_H
8 #define __SANDBOX_ASM_IO_H
10 void *phys_to_virt(phys_addr_t paddr
);
11 #define phys_to_virt phys_to_virt
13 phys_addr_t
virt_to_phys(void *vaddr
);
14 #define virt_to_phys virt_to_phys
16 void *map_physmem(phys_addr_t paddr
, unsigned long len
, unsigned long flags
);
17 #define map_physmem map_physmem
20 * Take down a mapping set up by map_physmem().
22 void unmap_physmem(const void *vaddr
, unsigned long flags
);
23 #define unmap_physmem unmap_physmem
25 #include <asm-generic/io.h>
27 /* For sandbox, we want addresses to point into our RAM buffer */
28 static inline void *map_sysmem(phys_addr_t paddr
, unsigned long len
)
30 return map_physmem(paddr
, len
, MAP_WRBACK
);
33 /* Remove a previous mapping */
34 static inline void unmap_sysmem(const void *vaddr
)
36 unmap_physmem(vaddr
, MAP_WRBACK
);
39 /* Map from a pointer to our RAM buffer */
40 phys_addr_t
map_to_sysmem(const void *ptr
);
42 /* Define nops for sandbox I/O access */
43 #define readb(addr) ((void)addr, 0)
44 #define readw(addr) ((void)addr, 0)
45 #define readl(addr) ((void)addr, 0)
46 #define writeb(v, addr) ((void)addr)
47 #define writew(v, addr) ((void)addr)
48 #define writel(v, addr) ((void)addr)
50 /* I/O access functions */
51 int inl(unsigned int addr
);
52 int inw(unsigned int addr
);
53 int inb(unsigned int addr
);
55 void outl(unsigned int value
, unsigned int addr
);
56 void outw(unsigned int value
, unsigned int addr
);
57 void outb(unsigned int value
, unsigned int addr
);
59 #define out_arch(type,endian,a,v) write##type(cpu_to_##endian(v),a)
60 #define in_arch(type,endian,a) endian##_to_cpu(read##type(a))
62 #define out_le32(a,v) out_arch(l,le32,a,v)
63 #define out_le16(a,v) out_arch(w,le16,a,v)
65 #define in_le32(a) in_arch(l,le32,a)
66 #define in_le16(a) in_arch(w,le16,a)
68 #define out_be32(a,v) out_arch(l,be32,a,v)
69 #define out_be16(a,v) out_arch(w,be16,a,v)
71 #define in_be32(a) in_arch(l,be32,a)
72 #define in_be16(a) in_arch(w,be16,a)
74 #define out_8(a,v) writeb(v,a)
75 #define in_8(a) readb(a)
77 #define clrbits(type, addr, clear) \
78 out_##type((addr), in_##type(addr) & ~(clear))
80 #define setbits(type, addr, set) \
81 out_##type((addr), in_##type(addr) | (set))
83 #define clrsetbits(type, addr, clear, set) \
84 out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
86 #define clrbits_be32(addr, clear) clrbits(be32, addr, clear)
87 #define setbits_be32(addr, set) setbits(be32, addr, set)
88 #define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set)
90 #define clrbits_le32(addr, clear) clrbits(le32, addr, clear)
91 #define setbits_le32(addr, set) setbits(le32, addr, set)
92 #define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
94 #define clrbits_be16(addr, clear) clrbits(be16, addr, clear)
95 #define setbits_be16(addr, set) setbits(be16, addr, set)
96 #define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
98 #define clrbits_le16(addr, clear) clrbits(le16, addr, clear)
99 #define setbits_le16(addr, set) setbits(le16, addr, set)
100 #define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
102 #define clrbits_8(addr, clear) clrbits(8, addr, clear)
103 #define setbits_8(addr, set) setbits(8, addr, set)
104 #define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
106 static inline void _insw(volatile u16
*port
, void *buf
, int ns
)
110 static inline void _outsw(volatile u16
*port
, const void *buf
, int ns
)
114 #define insw(port, buf, ns) _insw((u16 *)port, buf, ns)
115 #define outsw(port, buf, ns) _outsw((u16 *)port, buf, ns)
117 /* For systemace.c */
118 #define out16(addr, val)
122 #include <asm/types.h>