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  * Note: This file was taken from linux-2.4.19-rmk4-pxa1
  13  *
  14  * - 2003/01/20 implementation specifics activated
  15  *   Robert Schwebel <r.schwebel@pengutronix.de>
  16  */
  17
  18 #ifndef __ASM_ARCH_HARDWARE_H
  19 #define __ASM_ARCH_HARDWARE_H
  20
  21 #include <linux/config.h>
  22 #include <asm/mach-types.h>
  23
  24
  25 /*
  26  * These are statically mapped PCMCIA IO space for designs using it as a
  27  * generic IO bus, typically with ISA parts, hardwired IDE interfaces, etc.
  28  * The actual PCMCIA code is mapping required IO region at run time.
  29  */
  30 #define PCMCIA_IO_0_BASE        0xf6000000
  31 #define PCMCIA_IO_1_BASE        0xf7000000
  32
  33
  34 /*
  35  * We requires absolute addresses.
  36  */
  37 #define PCIO_BASE               0
  38
  39 /*
  40  * Workarounds for at least 2 errata so far require this.
  41  * The mapping is set in mach-pxa/generic.c.
  42  */
  43 #define UNCACHED_PHYS_0         0xff000000
  44 #define UNCACHED_ADDR           UNCACHED_PHYS_0
  45
  46 /*
  47  * Intel PXA internal I/O mappings:
  48  *
  49  * 0x40000000 - 0x41ffffff <--> 0xf8000000 - 0xf9ffffff
  50  * 0x44000000 - 0x45ffffff <--> 0xfa000000 - 0xfbffffff
  51  * 0x48000000 - 0x49ffffff <--> 0xfc000000 - 0xfdffffff
  52  */
  53
  54 /* FIXME: Only this does work for u-boot... find out why... [RS] */
  55 #define UBOOT_REG_FIX 1
  56
  57 #ifndef UBOOT_REG_FIX
  58 #ifndef __ASSEMBLY__
  59
  60 #define io_p2v(x)       ( ((x) | 0xbe000000) ^ (~((x) >> 1) & 0x06000000) )
  61 #define io_v2p( x )     ( ((x) & 0x41ffffff) ^ ( ((x) & 0x06000000) << 1) )
  62
  63 /*
  64  * This __REG() version gives the same results as the one above,  except
  65  * that we are fooling gcc somehow so it generates far better and smaller
  66  * assembly code for access to contigous registers.  It's a shame that gcc
  67  * doesn't guess this by itself.
  68  */
  69 #include <asm/types.h>
  70 typedef struct { volatile u32 offset[4096]; } __regbase;
  71 # define __REGP(x)      ((__regbase *)((x)&~4095))->offset[((x)&4095)>>2]
  72 # define __REG(x)       __REGP(io_p2v(x))
  73 #endif
  74
  75 /* Let's kick gcc's ass again... */
  76 # define __REG2(x,y)    \
  77         ( __builtin_constant_p(y) ? (__REG((x) + (y))) \
  78                                   : (*(volatile u32 *)((u32)&__REG(x) + (y))) )
  79
  80 # define __PREG(x)      (io_v2p((u32)&(x)))
  81
  82 #else
  83
  84 # define __REG(x)       io_p2v(x)
  85 # define __PREG(x)      io_v2p(x)
  86
  87 #endif
  88 #endif /* UBOOT_REG_FIX */
  89
  90 #ifdef UBOOT_REG_FIX
  91 # undef io_p2v
  92 # undef __REG
  93 # ifndef __ASSEMBLY__
  94 #  define io_p2v(PhAdd)    (PhAdd)
  95 #  define __REG(x)      (*((volatile u32 *)io_p2v(x)))
  96 #  define __REG2(x,y)   (*(volatile u32 *)((u32)&__REG(x) + (y)))
  97 # else
  98 #  define __REG(x) (x)
  99 #endif /* UBOOT_REG_FIX */
 100
 101 #include "pxa-regs.h"
 102
 103 #ifndef __ASSEMBLY__
 104
 105 /*
 106  * GPIO edge detection for IRQs:
 107  * IRQs are generated on Falling-Edge, Rising-Edge, or both.
 108  * This must be called *before* the corresponding IRQ is registered.
 109  * Use this instead of directly setting GRER/GFER.
 110  */
 111 #define GPIO_FALLING_EDGE       1
 112 #define GPIO_RISING_EDGE        2
 113 #define GPIO_BOTH_EDGES         3
 114 extern void set_GPIO_IRQ_edge( int gpio_nr, int edge_mask );
 115
 116 /*
 117  * Handy routine to set GPIO alternate functions
 118  */
 119 extern void set_GPIO_mode( int gpio_mode );
 120
 121 /*
 122  * return current lclk frequency in units of 10kHz
 123  */
 124 extern unsigned int get_lclk_frequency_10khz(void);
 125
 126 #endif
 127
 128
 129 /*
 130  * Implementation specifics
 131  */
 132
 133 #ifdef CONFIG_ARCH_LUBBOCK
 134 #include "lubbock.h"
 135 #endif
 136
 137 #ifdef CONFIG_ARCH_PXA_IDP
 138 #include "idp.h"
 139 #endif
 140
 141 #ifdef CONFIG_ARCH_PXA_CERF
 142 #include "cerf.h"
 143 #endif
 144
 145 #ifdef CONFIG_ARCH_CSB226
 146 #include "csb226.h"
 147 #endif
 148
 149 #ifdef CONFIG_ARCH_INNOKOM
 150 #include "innokom.h"
 151 #endif
 152
 153 #endif  /* _ASM_ARCH_HARDWARE_H */