Merge branch 'io-cleanup-for-3.4' of git://sources.calxeda.com/kernel/linux into...
[~shefty/rdma-dev.git] / arch / arm / mach-pxa / include / mach / hardware.h
1 /*
2  *  arch/arm/mach-pxa/include/mach/hardware.h
3  *
4  *  Author:     Nicolas Pitre
5  *  Created:    Jun 15, 2001
6  *  Copyright:  MontaVista Software Inc.
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License version 2 as
10  * published by the Free Software Foundation.
11  */
12
13 #ifndef __ASM_ARCH_HARDWARE_H
14 #define __ASM_ARCH_HARDWARE_H
15
16 #include <mach/addr-map.h>
17
18 /*
19  * Workarounds for at least 2 errata so far require this.
20  * The mapping is set in mach-pxa/generic.c.
21  */
22 #define UNCACHED_PHYS_0         0xff000000
23 #define UNCACHED_ADDR           UNCACHED_PHYS_0
24
25 /*
26  * Intel PXA2xx internal register mapping:
27  *
28  * 0x40000000 - 0x41ffffff <--> 0xf2000000 - 0xf3ffffff
29  * 0x44000000 - 0x45ffffff <--> 0xf4000000 - 0xf5ffffff
30  * 0x48000000 - 0x49ffffff <--> 0xf6000000 - 0xf7ffffff
31  * 0x4c000000 - 0x4dffffff <--> 0xf8000000 - 0xf9ffffff
32  * 0x50000000 - 0x51ffffff <--> 0xfa000000 - 0xfbffffff
33  * 0x54000000 - 0x55ffffff <--> 0xfc000000 - 0xfdffffff
34  * 0x58000000 - 0x59ffffff <--> 0xfe000000 - 0xffffffff
35  *
36  * Note that not all PXA2xx chips implement all those addresses, and the
37  * kernel only maps the minimum needed range of this mapping.
38  */
39 #define io_v2p(x) (0x3c000000 + ((x) & 0x01ffffff) + (((x) & 0x0e000000) << 1))
40 #define io_p2v(x) IOMEM(0xf2000000 + ((x) & 0x01ffffff) + (((x) & 0x1c000000) >> 1))
41
42 #ifndef __ASSEMBLY__
43 # define __REG(x)       (*((volatile u32 __iomem *)io_p2v(x)))
44
45 /* With indexed regs we don't want to feed the index through io_p2v()
46    especially if it is a variable, otherwise horrible code will result. */
47 # define __REG2(x,y)    \
48         (*(volatile u32 __iomem*)((u32)&__REG(x) + (y)))
49
50 # define __PREG(x)      (io_v2p((u32)&(x)))
51
52 #else
53
54 # define __REG(x)       io_p2v(x)
55 # define __PREG(x)      io_v2p(x)
56
57 #endif
58
59 #ifndef __ASSEMBLY__
60
61 #include <asm/cputype.h>
62
63 /*
64  *   CPU     Stepping     CPU_ID         JTAG_ID
65  *
66  *  PXA210      B0      0x69052922      0x2926C013
67  *  PXA210      B1      0x69052923      0x3926C013
68  *  PXA210      B2      0x69052924      0x4926C013
69  *  PXA210      C0      0x69052D25      0x5926C013
70  *
71  *  PXA250      A0      0x69052100      0x09264013
72  *  PXA250      A1      0x69052101      0x19264013
73  *  PXA250      B0      0x69052902      0x29264013
74  *  PXA250      B1      0x69052903      0x39264013
75  *  PXA250      B2      0x69052904      0x49264013
76  *  PXA250      C0      0x69052D05      0x59264013
77  *
78  *  PXA255      A0      0x69052D06      0x69264013
79  *
80  *  PXA26x      A0      0x69052903      0x39264013
81  *  PXA26x      B0      0x69052D05      0x59264013
82  *
83  *  PXA27x      A0      0x69054110      0x09265013
84  *  PXA27x      A1      0x69054111      0x19265013
85  *  PXA27x      B0      0x69054112      0x29265013
86  *  PXA27x      B1      0x69054113      0x39265013
87  *  PXA27x      C0      0x69054114      0x49265013
88  *  PXA27x      C5      0x69054117      0x79265013
89  *
90  *  PXA30x      A0      0x69056880      0x0E648013
91  *  PXA30x      A1      0x69056881      0x1E648013
92  *  PXA31x      A0      0x69056890      0x0E649013
93  *  PXA31x      A1      0x69056891      0x1E649013
94  *  PXA31x      A2      0x69056892      0x2E649013
95  *  PXA32x      B1      0x69056825      0x5E642013
96  *  PXA32x      B2      0x69056826      0x6E642013
97  *
98  *  PXA930      B0      0x69056835      0x5E643013
99  *  PXA930      B1      0x69056837      0x7E643013
100  *  PXA930      B2      0x69056838      0x8E643013
101  *
102  *  PXA935      A0      0x56056931      0x1E653013
103  *  PXA935      B0      0x56056936      0x6E653013
104  *  PXA935      B1      0x56056938      0x8E653013
105  */
106 #ifdef CONFIG_PXA25x
107 #define __cpu_is_pxa210(id)                             \
108         ({                                              \
109                 unsigned int _id = (id) & 0xf3f0;       \
110                 _id == 0x2120;                          \
111         })
112
113 #define __cpu_is_pxa250(id)                             \
114         ({                                              \
115                 unsigned int _id = (id) & 0xf3ff;       \
116                 _id <= 0x2105;                          \
117         })
118
119 #define __cpu_is_pxa255(id)                             \
120         ({                                              \
121                 unsigned int _id = (id) & 0xffff;       \
122                 _id == 0x2d06;                          \
123         })
124
125 #define __cpu_is_pxa25x(id)                             \
126         ({                                              \
127                 unsigned int _id = (id) & 0xf300;       \
128                 _id == 0x2100;                          \
129         })
130 #else
131 #define __cpu_is_pxa210(id)     (0)
132 #define __cpu_is_pxa250(id)     (0)
133 #define __cpu_is_pxa255(id)     (0)
134 #define __cpu_is_pxa25x(id)     (0)
135 #endif
136
137 #ifdef CONFIG_PXA27x
138 #define __cpu_is_pxa27x(id)                             \
139         ({                                              \
140                 unsigned int _id = (id) >> 4 & 0xfff;   \
141                 _id == 0x411;                           \
142         })
143 #else
144 #define __cpu_is_pxa27x(id)     (0)
145 #endif
146
147 #ifdef CONFIG_CPU_PXA300
148 #define __cpu_is_pxa300(id)                             \
149         ({                                              \
150                 unsigned int _id = (id) >> 4 & 0xfff;   \
151                 _id == 0x688;                           \
152          })
153 #else
154 #define __cpu_is_pxa300(id)     (0)
155 #endif
156
157 #ifdef CONFIG_CPU_PXA310
158 #define __cpu_is_pxa310(id)                             \
159         ({                                              \
160                 unsigned int _id = (id) >> 4 & 0xfff;   \
161                 _id == 0x689;                           \
162          })
163 #else
164 #define __cpu_is_pxa310(id)     (0)
165 #endif
166
167 #ifdef CONFIG_CPU_PXA320
168 #define __cpu_is_pxa320(id)                             \
169         ({                                              \
170                 unsigned int _id = (id) >> 4 & 0xfff;   \
171                 _id == 0x603 || _id == 0x682;           \
172          })
173 #else
174 #define __cpu_is_pxa320(id)     (0)
175 #endif
176
177 #ifdef CONFIG_CPU_PXA930
178 #define __cpu_is_pxa930(id)                             \
179         ({                                              \
180                 unsigned int _id = (id) >> 4 & 0xfff;   \
181                 _id == 0x683;                           \
182          })
183 #else
184 #define __cpu_is_pxa930(id)     (0)
185 #endif
186
187 #ifdef CONFIG_CPU_PXA935
188 #define __cpu_is_pxa935(id)                             \
189         ({                                              \
190                 unsigned int _id = (id) >> 4 & 0xfff;   \
191                 _id == 0x693;                           \
192          })
193 #else
194 #define __cpu_is_pxa935(id)     (0)
195 #endif
196
197 #ifdef CONFIG_CPU_PXA955
198 #define __cpu_is_pxa955(id)                             \
199         ({                                              \
200                 unsigned int _id = (id) >> 4 & 0xfff;   \
201                 _id == 0x581 || _id == 0xc08            \
202                         || _id == 0xb76;                \
203         })
204 #else
205 #define __cpu_is_pxa955(id)     (0)
206 #endif
207
208 #define cpu_is_pxa210()                                 \
209         ({                                              \
210                 __cpu_is_pxa210(read_cpuid_id());       \
211         })
212
213 #define cpu_is_pxa250()                                 \
214         ({                                              \
215                 __cpu_is_pxa250(read_cpuid_id());       \
216         })
217
218 #define cpu_is_pxa255()                                 \
219         ({                                              \
220                 __cpu_is_pxa255(read_cpuid_id());       \
221         })
222
223 #define cpu_is_pxa25x()                                 \
224         ({                                              \
225                 __cpu_is_pxa25x(read_cpuid_id());       \
226         })
227
228 #define cpu_is_pxa27x()                                 \
229         ({                                              \
230                 __cpu_is_pxa27x(read_cpuid_id());       \
231         })
232
233 #define cpu_is_pxa300()                                 \
234         ({                                              \
235                 __cpu_is_pxa300(read_cpuid_id());       \
236          })
237
238 #define cpu_is_pxa310()                                 \
239         ({                                              \
240                 __cpu_is_pxa310(read_cpuid_id());       \
241          })
242
243 #define cpu_is_pxa320()                                 \
244         ({                                              \
245                 __cpu_is_pxa320(read_cpuid_id());       \
246          })
247
248 #define cpu_is_pxa930()                                 \
249         ({                                              \
250                 __cpu_is_pxa930(read_cpuid_id());       \
251          })
252
253 #define cpu_is_pxa935()                                 \
254         ({                                              \
255                 __cpu_is_pxa935(read_cpuid_id());       \
256          })
257
258 #define cpu_is_pxa955()                                 \
259         ({                                              \
260                 __cpu_is_pxa955(read_cpuid_id());       \
261         })
262
263
264 /*
265  * CPUID Core Generation Bit
266  * <= 0x2 for pxa21x/pxa25x/pxa26x/pxa27x
267  */
268 #if defined(CONFIG_PXA25x) || defined(CONFIG_PXA27x)
269 #define __cpu_is_pxa2xx(id)                             \
270         ({                                              \
271                 unsigned int _id = (id) >> 13 & 0x7;    \
272                 _id <= 0x2;                             \
273          })
274 #else
275 #define __cpu_is_pxa2xx(id)     (0)
276 #endif
277
278 #ifdef CONFIG_PXA3xx
279 #define __cpu_is_pxa3xx(id)                             \
280         ({                                              \
281                 __cpu_is_pxa300(id)                     \
282                         || __cpu_is_pxa310(id)          \
283                         || __cpu_is_pxa320(id)          \
284                         || __cpu_is_pxa93x(id);         \
285          })
286 #else
287 #define __cpu_is_pxa3xx(id)     (0)
288 #endif
289
290 #if defined(CONFIG_CPU_PXA930) || defined(CONFIG_CPU_PXA935)
291 #define __cpu_is_pxa93x(id)                             \
292         ({                                              \
293                 __cpu_is_pxa930(id)                     \
294                         || __cpu_is_pxa935(id);         \
295          })
296 #else
297 #define __cpu_is_pxa93x(id)     (0)
298 #endif
299
300 #ifdef CONFIG_PXA95x
301 #define __cpu_is_pxa95x(id)                             \
302         ({                                              \
303                 __cpu_is_pxa955(id);                    \
304         })
305 #else
306 #define __cpu_is_pxa95x(id)     (0)
307 #endif
308
309 #define cpu_is_pxa2xx()                                 \
310         ({                                              \
311                 __cpu_is_pxa2xx(read_cpuid_id());       \
312          })
313
314 #define cpu_is_pxa3xx()                                 \
315         ({                                              \
316                 __cpu_is_pxa3xx(read_cpuid_id());       \
317          })
318
319 #define cpu_is_pxa93x()                                 \
320         ({                                              \
321                 __cpu_is_pxa93x(read_cpuid_id());       \
322          })
323
324 #define cpu_is_pxa95x()                                 \
325         ({                                              \
326                 __cpu_is_pxa95x(read_cpuid_id());       \
327         })
328
329 /*
330  * return current memory and LCD clock frequency in units of 10kHz
331  */
332 extern unsigned int get_memclk_frequency_10khz(void);
333
334 /* return the clock tick rate of the OS timer */
335 extern unsigned long get_clock_tick_rate(void);
336 #endif
337
338 #endif  /* _ASM_ARCH_HARDWARE_H */