1/* SPDX-License-Identifier: GPL-2.0+ */
2/*
3 * Copyright (c) 2011 The Chromium OS Authors.
4 */
5
6#ifndef __SANDBOX_ASM_IO_H
7#define __SANDBOX_ASM_IO_H
8
9#include <linux/types.h>
10
11enum sandboxio_size_t {
12	SB_SIZE_8,
13	SB_SIZE_16,
14	SB_SIZE_32,
15	SB_SIZE_64,
16};
17
18void *phys_to_virt(phys_addr_t paddr);
19#define phys_to_virt phys_to_virt
20
21phys_addr_t virt_to_phys(void *vaddr);
22#define virt_to_phys virt_to_phys
23
24void *map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags);
25#define map_physmem map_physmem
26
27/*
28 * Take down a mapping set up by map_physmem().
29 */
30void unmap_physmem(const void *vaddr, unsigned long flags);
31#define unmap_physmem unmap_physmem
32
33/* Map from a pointer to our RAM buffer */
34phys_addr_t map_to_sysmem(const void *ptr);
35
36unsigned long sandbox_read(const void *addr, enum sandboxio_size_t size);
37void sandbox_write(void *addr, unsigned int val, enum sandboxio_size_t size);
38
39#define readb(addr) sandbox_read((const void *)addr, SB_SIZE_8)
40#define readw(addr) sandbox_read((const void *)addr, SB_SIZE_16)
41#define readl(addr) sandbox_read((const void *)addr, SB_SIZE_32)
42#ifdef CONFIG_SANDBOX64
43#define readq(addr) sandbox_read((const void *)addr, SB_SIZE_64)
44#endif
45#define writeb(v, addr) sandbox_write((void *)addr, v, SB_SIZE_8)
46#define writew(v, addr) sandbox_write((void *)addr, v, SB_SIZE_16)
47#define writel(v, addr) sandbox_write((void *)addr, v, SB_SIZE_32)
48#ifdef CONFIG_SANDBOX64
49#define writeq(v, addr) sandbox_write((void *)addr, v, SB_SIZE_64)
50#endif
51
52/*
53 * Clear and set bits in one shot. These macros can be used to clear and
54 * set multiple bits in a register using a single call. These macros can
55 * also be used to set a multiple-bit bit pattern using a mask, by
56 * specifying the mask in the 'clear' parameter and the new bit pattern
57 * in the 'set' parameter.
58 */
59
60#define out_arch(type,endian,a,v)	write##type(cpu_to_##endian(v),a)
61#define in_arch(type,endian,a)		endian##_to_cpu(read##type(a))
62
63#define out_le64(a,v)	out_arch(q,le64,a,v)
64#define out_le32(a,v)	out_arch(l,le32,a,v)
65#define out_le16(a,v)	out_arch(w,le16,a,v)
66
67#define in_le64(a)	in_arch(q,le64,a)
68#define in_le32(a)	in_arch(l,le32,a)
69#define in_le16(a)	in_arch(w,le16,a)
70
71#define out_be32(a,v)	out_arch(l,be32,a,v)
72#define out_be16(a,v)	out_arch(w,be16,a,v)
73
74#define in_be32(a)	in_arch(l,be32,a)
75#define in_be16(a)	in_arch(w,be16,a)
76
77#define out_8(a,v)	writeb(v,a)
78#define in_8(a)		readb(a)
79
80#define clrbits(type, addr, clear) \
81	out_##type((addr), in_##type(addr) & ~(clear))
82
83#define setbits(type, addr, set) \
84	out_##type((addr), in_##type(addr) | (set))
85
86#define clrsetbits(type, addr, clear, set) \
87	out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
88
89#define clrbits_be32(addr, clear) clrbits(be32, addr, clear)
90#define setbits_be32(addr, set) setbits(be32, addr, set)
91#define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set)
92
93#define clrbits_le32(addr, clear) clrbits(le32, addr, clear)
94#define setbits_le32(addr, set) setbits(le32, addr, set)
95#define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
96
97#define clrbits_be16(addr, clear) clrbits(be16, addr, clear)
98#define setbits_be16(addr, set) setbits(be16, addr, set)
99#define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
100
101#define clrbits_le16(addr, clear) clrbits(le16, addr, clear)
102#define setbits_le16(addr, set) setbits(le16, addr, set)
103#define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
104
105#define clrbits_8(addr, clear) clrbits(8, addr, clear)
106#define setbits_8(addr, set) setbits(8, addr, set)
107#define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
108
109/* I/O access functions */
110int _inl(unsigned int addr);
111int _inw(unsigned int addr);
112int _inb(unsigned int addr);
113
114void _outl(unsigned int value, unsigned int addr);
115void _outw(unsigned int value, unsigned int addr);
116void _outb(unsigned int value, unsigned int addr);
117
118#define inb(port)	_inb((uintptr_t)(port))
119#define inw(port)	_inw((uintptr_t)(port))
120#define inl(port)	_inl((uintptr_t)(port))
121
122#define outb(val, port)	_outb(val, (uintptr_t)(port))
123#define outw(val, port)	_outw(val, (uintptr_t)(port))
124#define outl(val, port)	_outl(val, (uintptr_t)(port))
125
126#define out_arch(type,endian,a,v)	write##type(cpu_to_##endian(v),a)
127#define in_arch(type,endian,a)		endian##_to_cpu(read##type(a))
128
129#define out_le32(a,v)	out_arch(l,le32,a,v)
130#define out_le16(a,v)	out_arch(w,le16,a,v)
131
132#define in_le32(a)	in_arch(l,le32,a)
133#define in_le16(a)	in_arch(w,le16,a)
134
135#define out_be32(a,v)	out_arch(l,be32,a,v)
136#define out_be16(a,v)	out_arch(w,be16,a,v)
137
138#define in_be32(a)	in_arch(l,be32,a)
139#define in_be16(a)	in_arch(w,be16,a)
140
141#define out_8(a,v)	writeb(v,a)
142#define in_8(a)		readb(a)
143
144#define clrbits(type, addr, clear) \
145	out_##type((addr), in_##type(addr) & ~(clear))
146
147#define setbits(type, addr, set) \
148	out_##type((addr), in_##type(addr) | (set))
149
150#define clrsetbits(type, addr, clear, set) \
151	out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
152
153#define clrbits_be32(addr, clear) clrbits(be32, addr, clear)
154#define setbits_be32(addr, set) setbits(be32, addr, set)
155#define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set)
156
157#define clrbits_le32(addr, clear) clrbits(le32, addr, clear)
158#define setbits_le32(addr, set) setbits(le32, addr, set)
159#define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
160
161#define clrbits_be16(addr, clear) clrbits(be16, addr, clear)
162#define setbits_be16(addr, set) setbits(be16, addr, set)
163#define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
164
165#define clrbits_le16(addr, clear) clrbits(le16, addr, clear)
166#define setbits_le16(addr, set) setbits(le16, addr, set)
167#define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
168
169#define clrbits_8(addr, clear) clrbits(8, addr, clear)
170#define setbits_8(addr, set) setbits(8, addr, set)
171#define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
172
173static inline void _insw(volatile u16 *port, void *buf, int ns)
174{
175}
176
177static inline void _outsw(volatile u16 *port, const void *buf, int ns)
178{
179}
180
181static inline void memset_io(volatile void *addr, unsigned char val, int count)
182{
183}
184
185static inline void memcpy_fromio(void *dst, const volatile void *src, int count)
186{
187}
188
189static inline void memcpy_toio(volatile void *dst, const void *src, int count)
190{
191}
192
193#define insw(port, buf, ns)		_insw((u16 *)port, buf, ns)
194#define outsw(port, buf, ns)		_outsw((u16 *)port, buf, ns)
195
196/* IO space accessors */
197#define clrio(type, addr, clear) \
198	out##type(in##type(addr) & ~(clear), (addr))
199
200#define setio(type, addr, set) \
201	out##type(in##type(addr) | (set), (addr))
202
203#define clrsetio(type, addr, clear, set) \
204	out##type((in##type(addr) & ~(clear)) | (set), (addr))
205
206#define clrio_32(addr, clear) clrio(l, addr, clear)
207#define clrio_16(addr, clear) clrio(w, addr, clear)
208#define clrio_8(addr, clear) clrio(b, addr, clear)
209
210#define setio_32(addr, set) setio(l, addr, set)
211#define setio_16(addr, set) setio(w, addr, set)
212#define setio_8(addr, set) setio(b, addr, set)
213
214#define clrsetio_32(addr, clear, set) clrsetio(l, addr, clear, set)
215#define clrsetio_16(addr, clear, set) clrsetio(w, addr, clear, set)
216#define clrsetio_8(addr, clear, set) clrsetio(b, addr, clear, set)
217
218#include <iotrace.h>
219#include <asm/types.h>
220#include <asm-generic/io.h>
221
222/* For sandbox, we want addresses to point into our RAM buffer */
223static inline void *map_sysmem(phys_addr_t paddr, unsigned long len)
224{
225	return map_physmem(paddr, len, MAP_WRBACK);
226}
227
228/* Remove a previous mapping */
229static inline void unmap_sysmem(const void *vaddr)
230{
231	unmap_physmem(vaddr, MAP_WRBACK);
232}
233
234/**
235 * nomap_sysmem() - pass through an address unchanged
236 *
237 * This is used to indicate an address which should NOT be mapped, e.g. in
238 * SMBIOS tables. Using this function instead of a case shows that the sandbox
239 * conversion has been done
240 */
241static inline void *nomap_sysmem(phys_addr_t paddr, unsigned long len)
242{
243	return (void *)(uintptr_t)paddr;
244}
245
246static inline phys_addr_t nomap_to_sysmem(const void *ptr)
247{
248	return (phys_addr_t)(uintptr_t)ptr;
249}
250
251#endif
252