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_pxa25x(id)                             \
  73         ({                                              \
  74                 unsigned int _id = (id) >> 4 & 0xfff;   \
  75                 _id == 0x2d0 || _id == 0x290;           \
  76         })
  77 #else
  78 #define __cpu_is_pxa21x(id)     (0)
  79 #define __cpu_is_pxa25x(id)     (0)
  80 #endif
  81
  82 #ifdef CONFIG_PXA27x
  83 #define __cpu_is_pxa27x(id)                             \
  84         ({                                              \
  85                 unsigned int _id = (id) >> 4 & 0xfff;   \
  86                 _id == 0x411;                           \
  87         })
  88 #else
  89 #define __cpu_is_pxa27x(id)     (0)
  90 #endif
  91
  92 #ifdef CONFIG_CPU_PXA300
  93 #define __cpu_is_pxa300(id)                             \
  94         ({                                              \
  95                 unsigned int _id = (id) >> 4 & 0xfff;   \
  96                 _id == 0x688;                           \
  97          })
  98 #else
  99 #define __cpu_is_pxa300(id)     (0)
 100 #endif
 101
 102 #ifdef CONFIG_CPU_PXA310
 103 #define __cpu_is_pxa310(id)                             \
 104         ({                                              \
 105                 unsigned int _id = (id) >> 4 & 0xfff;   \
 106                 _id == 0x689;                           \
 107          })
 108 #else
 109 #define __cpu_is_pxa310(id)     (0)
 110 #endif
 111
 112 #ifdef CONFIG_CPU_PXA320
 113 #define __cpu_is_pxa320(id)                             \
 114         ({                                              \
 115                 unsigned int _id = (id) >> 4 & 0xfff;   \
 116                 _id == 0x603 || _id == 0x682;           \
 117          })
 118 #else
 119 #define __cpu_is_pxa320(id)     (0)
 120 #endif
 121
 122 #define cpu_is_pxa21x()                                 \
 123         ({                                              \
 124                 unsigned int id = read_cpuid(CPUID_ID); \
 125                 __cpu_is_pxa21x(id);                    \
 126         })
 127
 128 #define cpu_is_pxa25x()                                 \
 129         ({                                              \
 130                 unsigned int id = read_cpuid(CPUID_ID); \
 131                 __cpu_is_pxa25x(id);                    \
 132         })
 133
 134 #define cpu_is_pxa27x()                                 \
 135         ({                                              \
 136                 unsigned int id = read_cpuid(CPUID_ID); \
 137                 __cpu_is_pxa27x(id);                    \
 138         })
 139
 140 #define cpu_is_pxa300()                                 \
 141         ({                                              \
 142                 unsigned int id = read_cpuid(CPUID_ID); \
 143                 __cpu_is_pxa300(id);                    \
 144          })
 145
 146 #define cpu_is_pxa310()                                 \
 147         ({                                              \
 148                 unsigned int id = read_cpuid(CPUID_ID); \
 149                 __cpu_is_pxa310(id);                    \
 150          })
 151
 152 #define cpu_is_pxa320()                                 \
 153         ({                                              \
 154                 unsigned int id = read_cpuid(CPUID_ID); \
 155                 __cpu_is_pxa320(id);                    \
 156          })
 157
 158 /*
 159  * CPUID Core Generation Bit
 160  * <= 0x2 for pxa21x/pxa25x/pxa26x/pxa27x
 161  * == 0x3 for pxa300/pxa310/pxa320
 162  */
 163 #define __cpu_is_pxa2xx(id)                             \
 164         ({                                              \
 165                 unsigned int _id = (id) >> 13 & 0x7;    \
 166                 _id <= 0x2;                             \
 167          })
 168
 169 #define __cpu_is_pxa3xx(id)                             \
 170         ({                                              \
 171                 unsigned int _id = (id) >> 13 & 0x7;    \
 172                 _id == 0x3;                             \
 173          })
 174
 175 #define cpu_is_pxa2xx()                                 \
 176         ({                                              \
 177                 unsigned int id = read_cpuid(CPUID_ID); \
 178                 __cpu_is_pxa2xx(id);                    \
 179          })
 180
 181 #define cpu_is_pxa3xx()                                 \
 182         ({                                              \
 183                 unsigned int id = read_cpuid(CPUID_ID); \
 184                 __cpu_is_pxa3xx(id);                    \
 185          })
 186
 187 /*
 188  * Handy routine to set GPIO alternate functions
 189  */
 190 extern int pxa_gpio_mode( int gpio_mode );
 191
 192 /*
 193  * Return GPIO level, nonzero means high, zero is low
 194  */
 195 extern int pxa_gpio_get_value(unsigned gpio);
 196
 197 /*
 198  * Set output GPIO level
 199  */
 200 extern void pxa_gpio_set_value(unsigned gpio, int value);
 201
 202 /*
 203  * Routine to enable or disable CKEN
 204  */
 205 static inline void __deprecated pxa_set_cken(int clock, int enable)
 206 {
 207         extern void __pxa_set_cken(int clock, int enable);
 208         __pxa_set_cken(clock, enable);
 209 }
 210
 211 /*
 212  * return current memory and LCD clock frequency in units of 10kHz
 213  */
 214 extern unsigned int get_memclk_frequency_10khz(void);
 215
 216 #endif
 217
 218 #if defined(CONFIG_MACH_ARMCORE) && defined(CONFIG_PCI)
 219 #define PCIBIOS_MIN_IO          0
 220 #define PCIBIOS_MIN_MEM         0
 221 #define pcibios_assign_all_busses()     1
 222 #endif
 223
 224 #endif  /* _ASM_ARCH_HARDWARE_H */