1 /*
2 * Copyright (c) 2011 The Chromium OS Authors.
3 *
4 * SPDX-License-Identifier: GPL-2.0+
5 */
6
7 #ifndef __SANDBOX_ASM_IO_H
8 #define __SANDBOX_ASM_IO_H
9
10 /*
11 * Given a physical address and a length, return a virtual address
12 * that can be used to access the memory range with the caching
13 * properties specified by "flags".
14 */
15 #define MAP_NOCACHE (0)
16 #define MAP_WRCOMBINE (0)
17 #define MAP_WRBACK (0)
18 #define MAP_WRTHROUGH (0)
19
20 void *map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags);
21
22 /*
23 * Take down a mapping set up by map_physmem().
24 */
25 void unmap_physmem(const void *vaddr, unsigned long flags);
26
27 /* For sandbox, we want addresses to point into our RAM buffer */
map_sysmem(phys_addr_t paddr,unsigned long len)28 static inline void *map_sysmem(phys_addr_t paddr, unsigned long len)
29 {
30 return map_physmem(paddr, len, MAP_WRBACK);
31 }
32
33 /* Remove a previous mapping */
unmap_sysmem(const void * vaddr)34 static inline void unmap_sysmem(const void *vaddr)
35 {
36 unmap_physmem(vaddr, MAP_WRBACK);
37 }
38
39 /* Map from a pointer to our RAM buffer */
40 phys_addr_t map_to_sysmem(const void *ptr);
41
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)
49
50 /* I/O access functions */
51 int inl(unsigned int addr);
52 int inw(unsigned int addr);
53 int inb(unsigned int addr);
54
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);
58
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))
61
62 #define out_le32(a,v) out_arch(l,le32,a,v)
63 #define out_le16(a,v) out_arch(w,le16,a,v)
64
65 #define in_le32(a) in_arch(l,le32,a)
66 #define in_le16(a) in_arch(w,le16,a)
67
68 #define out_be32(a,v) out_arch(l,be32,a,v)
69 #define out_be16(a,v) out_arch(w,be16,a,v)
70
71 #define in_be32(a) in_arch(l,be32,a)
72 #define in_be16(a) in_arch(w,be16,a)
73
74 #define out_8(a,v) writeb(v,a)
75 #define in_8(a) readb(a)
76
77 #define clrbits(type, addr, clear) \
78 out_##type((addr), in_##type(addr) & ~(clear))
79
80 #define setbits(type, addr, set) \
81 out_##type((addr), in_##type(addr) | (set))
82
83 #define clrsetbits(type, addr, clear, set) \
84 out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
85
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)
89
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)
93
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)
97
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)
101
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)
105
_insw(volatile u16 * port,void * buf,int ns)106 static inline void _insw(volatile u16 *port, void *buf, int ns)
107 {
108 }
109
_outsw(volatile u16 * port,const void * buf,int ns)110 static inline void _outsw(volatile u16 *port, const void *buf, int ns)
111 {
112 }
113
114 #define insw(port, buf, ns) _insw((u16 *)port, buf, ns)
115 #define outsw(port, buf, ns) _outsw((u16 *)port, buf, ns)
116
117 /* For systemace.c */
118 #define out16(addr, val)
119 #define in16(addr) 0
120
121 #include <iotrace.h>
122 #include <asm/types.h>
123
124 #endif
125