351d0a721769ed2745a78628004a83d2415d57aa
[linux-2.6.git] / include / asm-arm / arch-pxa / hardware.h
1 /*
2  *  linux/include/asm-arm/arch-pxa/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 /*
17  * We requires absolute addresses.
18  */
19 #define PCIO_BASE               0
20
21 /*
22  * Workarounds for at least 2 errata so far require this.
23  * The mapping is set in mach-pxa/generic.c.
24  */
25 #define UNCACHED_PHYS_0         0xff000000
26 #define UNCACHED_ADDR           UNCACHED_PHYS_0
27
28 /*
29  * Intel PXA2xx internal register mapping:
30  *
31  * 0x40000000 - 0x41ffffff <--> 0xf2000000 - 0xf3ffffff
32  * 0x44000000 - 0x45ffffff <--> 0xf4000000 - 0xf5ffffff
33  * 0x48000000 - 0x49ffffff <--> 0xf6000000 - 0xf7ffffff
34  * 0x4c000000 - 0x4dffffff <--> 0xf8000000 - 0xf9ffffff
35  * 0x50000000 - 0x51ffffff <--> 0xfa000000 - 0xfbffffff
36  * 0x54000000 - 0x55ffffff <--> 0xfc000000 - 0xfdffffff
37  * 0x58000000 - 0x59ffffff <--> 0xfe000000 - 0xffffffff
38  *
39  * Note that not all PXA2xx chips implement all those addresses, and the
40  * kernel only maps the minimum needed range of this mapping.
41  */
42 #define io_p2v(x) (0xf2000000 + ((x) & 0x01ffffff) + (((x) & 0x1c000000) >> 1))
43 #define io_v2p(x) (0x3c000000 + ((x) & 0x01ffffff) + (((x) & 0x0e000000) << 1))
44
45 #ifndef __ASSEMBLY__
46
47 # define __REG(x)       (*((volatile u32 *)io_p2v(x)))
48
49 /* With indexed regs we don't want to feed the index through io_p2v()
50    especially if it is a variable, otherwise horrible code will result. */
51 # define __REG2(x,y)    \
52         (*(volatile u32 *)((u32)&__REG(x) + (y)))
53
54 # define __PREG(x)      (io_v2p((u32)&(x)))
55
56 #else
57
58 # define __REG(x)       io_p2v(x)
59 # define __PREG(x)      io_v2p(x)
60
61 #endif
62
63 #ifndef __ASSEMBLY__
64
65 #ifdef CONFIG_PXA25x
66 #define __cpu_is_pxa21x(id)                             \
67         ({                                              \
68                 unsigned int _id = (id) >> 4 & 0xf3f;   \
69                 _id == 0x212;                           \
70         })
71
72 #define __cpu_is_pxa255(id)                             \
73         ({                                              \
74                 unsigned int _id = (id) >> 4 & 0xfff;   \
75                 _id == 0x2d0;                           \
76          })
77
78 #define __cpu_is_pxa25x(id)                             \
79         ({                                              \
80                 unsigned int _id = (id) >> 4 & 0xfff;   \
81                 _id == 0x2d0 || _id == 0x290;           \
82         })
83 #else
84 #define __cpu_is_pxa21x(id)     (0)
85 #define __cpu_is_pxa255(id)     (0)
86 #define __cpu_is_pxa25x(id)     (0)
87 #endif
88
89 #ifdef CONFIG_PXA27x
90 #define __cpu_is_pxa27x(id)                             \
91         ({                                              \
92                 unsigned int _id = (id) >> 4 & 0xfff;   \
93                 _id == 0x411;                           \
94         })
95 #else
96 #define __cpu_is_pxa27x(id)     (0)
97 #endif
98
99 #ifdef CONFIG_CPU_PXA300
100 #define __cpu_is_pxa300(id)                             \
101         ({                                              \
102                 unsigned int _id = (id) >> 4 & 0xfff;   \
103                 _id == 0x688;                           \
104          })
105 #else
106 #define __cpu_is_pxa300(id)     (0)
107 #endif
108
109 #ifdef CONFIG_CPU_PXA310
110 #define __cpu_is_pxa310(id)                             \
111         ({                                              \
112                 unsigned int _id = (id) >> 4 & 0xfff;   \
113                 _id == 0x689;                           \
114          })
115 #else
116 #define __cpu_is_pxa310(id)     (0)
117 #endif
118
119 #ifdef CONFIG_CPU_PXA320
120 #define __cpu_is_pxa320(id)                             \
121         ({                                              \
122                 unsigned int _id = (id) >> 4 & 0xfff;   \
123                 _id == 0x603 || _id == 0x682;           \
124          })
125 #else
126 #define __cpu_is_pxa320(id)     (0)
127 #endif
128
129 #ifdef CONFIG_CPU_PXA930
130 #define __cpu_is_pxa930(id)                             \
131         ({                                              \
132                 unsigned int _id = (id) >> 4 & 0xfff;   \
133                 _id == 0x683;           \
134          })
135 #else
136 #define __cpu_is_pxa930(id)     (0)
137 #endif
138
139 #define cpu_is_pxa21x()                                 \
140         ({                                              \
141                 __cpu_is_pxa21x(read_cpuid_id());       \
142         })
143
144 #define cpu_is_pxa255()                                 \
145         ({                                              \
146                 __cpu_is_pxa255(read_cpuid_id());       \
147         })
148
149 #define cpu_is_pxa25x()                                 \
150         ({                                              \
151                 __cpu_is_pxa25x(read_cpuid_id());       \
152         })
153
154 #define cpu_is_pxa27x()                                 \
155         ({                                              \
156                 __cpu_is_pxa27x(read_cpuid_id());       \
157         })
158
159 #define cpu_is_pxa300()                                 \
160         ({                                              \
161                 __cpu_is_pxa300(read_cpuid_id());       \
162          })
163
164 #define cpu_is_pxa310()                                 \
165         ({                                              \
166                 __cpu_is_pxa310(read_cpuid_id());       \
167          })
168
169 #define cpu_is_pxa320()                                 \
170         ({                                              \
171                 __cpu_is_pxa320(read_cpuid_id());       \
172          })
173
174 #define cpu_is_pxa930()                                 \
175         ({                                              \
176                 unsigned int id = read_cpuid(CPUID_ID); \
177                 __cpu_is_pxa930(id);                    \
178          })
179
180 /*
181  * CPUID Core Generation Bit
182  * <= 0x2 for pxa21x/pxa25x/pxa26x/pxa27x
183  * == 0x3 for pxa300/pxa310/pxa320
184  */
185 #define __cpu_is_pxa2xx(id)                             \
186         ({                                              \
187                 unsigned int _id = (id) >> 13 & 0x7;    \
188                 _id <= 0x2;                             \
189          })
190
191 #define __cpu_is_pxa3xx(id)                             \
192         ({                                              \
193                 unsigned int _id = (id) >> 13 & 0x7;    \
194                 _id == 0x3;                             \
195          })
196
197 #define cpu_is_pxa2xx()                                 \
198         ({                                              \
199                 __cpu_is_pxa2xx(read_cpuid_id());       \
200          })
201
202 #define cpu_is_pxa3xx()                                 \
203         ({                                              \
204                 __cpu_is_pxa3xx(read_cpuid_id());       \
205          })
206
207 /*
208  * Handy routine to set GPIO alternate functions
209  */
210 extern int pxa_gpio_mode( int gpio_mode );
211
212 /*
213  * Return GPIO level, nonzero means high, zero is low
214  */
215 extern int pxa_gpio_get_value(unsigned gpio);
216
217 /*
218  * Set output GPIO level
219  */
220 extern void pxa_gpio_set_value(unsigned gpio, int value);
221
222 /*
223  * return current memory and LCD clock frequency in units of 10kHz
224  */
225 extern unsigned int get_memclk_frequency_10khz(void);
226
227 #endif
228
229 #if defined(CONFIG_MACH_ARMCORE) && defined(CONFIG_PCI)
230 #define PCIBIOS_MIN_IO          0
231 #define PCIBIOS_MIN_MEM         0
232 #define pcibios_assign_all_busses()     1
233 #endif
234
235 #endif  /* _ASM_ARCH_HARDWARE_H */