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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-arm/arch-cl7500/io.h
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/asm-arm/arch-cl7500/io.h')
-rw-r--r--include/asm-arm/arch-cl7500/io.h253
1 files changed, 253 insertions, 0 deletions
diff --git a/include/asm-arm/arch-cl7500/io.h b/include/asm-arm/arch-cl7500/io.h
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+++ b/include/asm-arm/arch-cl7500/io.h
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1/*
2 * linux/include/asm-arm/arch-cl7500/io.h
3 * from linux/include/asm-arm/arch-rpc/io.h
4 *
5 * Copyright (C) 1997 Russell King
6 *
7 * Modifications:
8 * 06-Dec-1997 RMK Created.
9 */
10#ifndef __ASM_ARM_ARCH_IO_H
11#define __ASM_ARM_ARCH_IO_H
12
13#define IO_SPACE_LIMIT 0xffffffff
14
15/*
16 * GCC is totally crap at loading/storing data. We try to persuade it
17 * to do the right thing by using these whereever possible instead of
18 * the above.
19 */
20#define __arch_base_getb(b,o) \
21 ({ \
22 unsigned int v, r = (b); \
23 __asm__ __volatile__( \
24 "ldrb %0, [%1, %2]" \
25 : "=r" (v) \
26 : "r" (r), "Ir" (o)); \
27 v; \
28 })
29
30#define __arch_base_getl(b,o) \
31 ({ \
32 unsigned int v, r = (b); \
33 __asm__ __volatile__( \
34 "ldr %0, [%1, %2]" \
35 : "=r" (v) \
36 : "r" (r), "Ir" (o)); \
37 v; \
38 })
39
40#define __arch_base_putb(v,b,o) \
41 ({ \
42 unsigned int r = (b); \
43 __asm__ __volatile__( \
44 "strb %0, [%1, %2]" \
45 : \
46 : "r" (v), "r" (r), "Ir" (o)); \
47 })
48
49#define __arch_base_putl(v,b,o) \
50 ({ \
51 unsigned int r = (b); \
52 __asm__ __volatile__( \
53 "str %0, [%1, %2]" \
54 : \
55 : "r" (v), "r" (r), "Ir" (o)); \
56 })
57
58/*
59 * We use two different types of addressing - PC style addresses, and ARM
60 * addresses. PC style accesses the PC hardware with the normal PC IO
61 * addresses, eg 0x3f8 for serial#1. ARM addresses are 0x80000000+
62 * and are translated to the start of IO. Note that all addresses are
63 * shifted left!
64 */
65#define __PORT_PCIO(x) (!((x) & 0x80000000))
66
67/*
68 * Dynamic IO functions - let the compiler
69 * optimize the expressions
70 */
71static inline void __outb (unsigned int value, unsigned int port)
72{
73 unsigned long temp;
74 __asm__ __volatile__(
75 "tst %2, #0x80000000\n\t"
76 "mov %0, %4\n\t"
77 "addeq %0, %0, %3\n\t"
78 "strb %1, [%0, %2, lsl #2] @ outb"
79 : "=&r" (temp)
80 : "r" (value), "r" (port), "Ir" (PCIO_BASE - IO_BASE), "Ir" (IO_BASE)
81 : "cc");
82}
83
84static inline void __outw (unsigned int value, unsigned int port)
85{
86 unsigned long temp;
87 __asm__ __volatile__(
88 "tst %2, #0x80000000\n\t"
89 "mov %0, %4\n\t"
90 "addeq %0, %0, %3\n\t"
91 "str %1, [%0, %2, lsl #2] @ outw"
92 : "=&r" (temp)
93 : "r" (value|value<<16), "r" (port), "Ir" (PCIO_BASE - IO_BASE), "Ir" (IO_BASE)
94 : "cc");
95}
96
97static inline void __outl (unsigned int value, unsigned int port)
98{
99 unsigned long temp;
100 __asm__ __volatile__(
101 "tst %2, #0x80000000\n\t"
102 "mov %0, %4\n\t"
103 "addeq %0, %0, %3\n\t"
104 "str %1, [%0, %2, lsl #2] @ outl"
105 : "=&r" (temp)
106 : "r" (value), "r" (port), "Ir" (PCIO_BASE - IO_BASE), "Ir" (IO_BASE)
107 : "cc");
108}
109
110#define DECLARE_DYN_IN(sz,fnsuffix,instr) \
111static inline unsigned sz __in##fnsuffix (unsigned int port) \
112{ \
113 unsigned long temp, value; \
114 __asm__ __volatile__( \
115 "tst %2, #0x80000000\n\t" \
116 "mov %0, %4\n\t" \
117 "addeq %0, %0, %3\n\t" \
118 "ldr" instr " %1, [%0, %2, lsl #2] @ in" #fnsuffix \
119 : "=&r" (temp), "=r" (value) \
120 : "r" (port), "Ir" (PCIO_BASE - IO_BASE), "Ir" (IO_BASE) \
121 : "cc"); \
122 return (unsigned sz)value; \
123}
124
125static inline unsigned int __ioaddr (unsigned int port) \
126{ \
127 if (__PORT_PCIO(port)) \
128 return (unsigned int)(PCIO_BASE + (port << 2)); \
129 else \
130 return (unsigned int)(IO_BASE + (port << 2)); \
131}
132
133#define DECLARE_IO(sz,fnsuffix,instr) \
134 DECLARE_DYN_IN(sz,fnsuffix,instr)
135
136DECLARE_IO(char,b,"b")
137DECLARE_IO(short,w,"")
138DECLARE_IO(int,l,"")
139
140#undef DECLARE_IO
141#undef DECLARE_DYN_IN
142
143/*
144 * Constant address IO functions
145 *
146 * These have to be macros for the 'J' constraint to work -
147 * +/-4096 immediate operand.
148 */
149#define __outbc(value,port) \
150({ \
151 if (__PORT_PCIO((port))) \
152 __asm__ __volatile__( \
153 "strb %0, [%1, %2] @ outbc" \
154 : : "r" (value), "r" (PCIO_BASE), "Jr" ((port) << 2)); \
155 else \
156 __asm__ __volatile__( \
157 "strb %0, [%1, %2] @ outbc" \
158 : : "r" (value), "r" (IO_BASE), "r" ((port) << 2)); \
159})
160
161#define __inbc(port) \
162({ \
163 unsigned char result; \
164 if (__PORT_PCIO((port))) \
165 __asm__ __volatile__( \
166 "ldrb %0, [%1, %2] @ inbc" \
167 : "=r" (result) : "r" (PCIO_BASE), "Jr" ((port) << 2)); \
168 else \
169 __asm__ __volatile__( \
170 "ldrb %0, [%1, %2] @ inbc" \
171 : "=r" (result) : "r" (IO_BASE), "r" ((port) << 2)); \
172 result; \
173})
174
175#define __outwc(value,port) \
176({ \
177 unsigned long v = value; \
178 if (__PORT_PCIO((port))) \
179 __asm__ __volatile__( \
180 "str %0, [%1, %2] @ outwc" \
181 : : "r" (v|v<<16), "r" (PCIO_BASE), "Jr" ((port) << 2)); \
182 else \
183 __asm__ __volatile__( \
184 "str %0, [%1, %2] @ outwc" \
185 : : "r" (v|v<<16), "r" (IO_BASE), "r" ((port) << 2)); \
186})
187
188#define __inwc(port) \
189({ \
190 unsigned short result; \
191 if (__PORT_PCIO((port))) \
192 __asm__ __volatile__( \
193 "ldr %0, [%1, %2] @ inwc" \
194 : "=r" (result) : "r" (PCIO_BASE), "Jr" ((port) << 2)); \
195 else \
196 __asm__ __volatile__( \
197 "ldr %0, [%1, %2] @ inwc" \
198 : "=r" (result) : "r" (IO_BASE), "r" ((port) << 2)); \
199 result & 0xffff; \
200})
201
202#define __outlc(value,port) \
203({ \
204 unsigned long v = value; \
205 if (__PORT_PCIO((port))) \
206 __asm__ __volatile__( \
207 "str %0, [%1, %2] @ outlc" \
208 : : "r" (v), "r" (PCIO_BASE), "Jr" ((port) << 2)); \
209 else \
210 __asm__ __volatile__( \
211 "str %0, [%1, %2] @ outlc" \
212 : : "r" (v), "r" (IO_BASE), "r" ((port) << 2)); \
213})
214
215#define __inlc(port) \
216({ \
217 unsigned long result; \
218 if (__PORT_PCIO((port))) \
219 __asm__ __volatile__( \
220 "ldr %0, [%1, %2] @ inlc" \
221 : "=r" (result) : "r" (PCIO_BASE), "Jr" ((port) << 2)); \
222 else \
223 __asm__ __volatile__( \
224 "ldr %0, [%1, %2] @ inlc" \
225 : "=r" (result) : "r" (IO_BASE), "r" ((port) << 2)); \
226 result; \
227})
228
229#define __ioaddrc(port) \
230 (__PORT_PCIO((port)) ? PCIO_BASE + ((port) << 2) : IO_BASE + ((port) << 2))
231
232#define inb(p) (__builtin_constant_p((p)) ? __inbc(p) : __inb(p))
233#define inw(p) (__builtin_constant_p((p)) ? __inwc(p) : __inw(p))
234#define inl(p) (__builtin_constant_p((p)) ? __inlc(p) : __inl(p))
235#define outb(v,p) (__builtin_constant_p((p)) ? __outbc(v,p) : __outb(v,p))
236#define outw(v,p) (__builtin_constant_p((p)) ? __outwc(v,p) : __outw(v,p))
237#define outl(v,p) (__builtin_constant_p((p)) ? __outlc(v,p) : __outl(v,p))
238#define __ioaddr(p) (__builtin_constant_p((p)) ? __ioaddr(p) : __ioaddrc(p))
239/* the following macro is deprecated */
240#define ioaddr(port) __ioaddr((port))
241
242#define insb(p,d,l) __raw_readsb(__ioaddr(p),d,l)
243#define insw(p,d,l) __raw_readsw(__ioaddr(p),d,l)
244
245#define outsb(p,d,l) __raw_writesb(__ioaddr(p),d,l)
246#define outsw(p,d,l) __raw_writesw(__ioaddr(p),d,l)
247
248/*
249 * 1:1 mapping for ioremapped regions.
250 */
251#define __mem_pci(x) (x)
252
253#endif
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