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 */