arch/arm/lib/io-shark.c

   1 /*
   2  *  linux/arch/arm/lib/io-shark.c
   3  *
   4  *  by Alexander Schulz
   5  *
   6  * derived from:
   7  * linux/arch/arm/lib/io-ebsa.S
   8  * Copyright (C) 1995, 1996 Russell King
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14 #include <linux/kernel.h>
  15
  16 #include <asm/io.h>
  17
  18 void print_warning(void)
  19 {
  20         printk(KERN_WARNING "ins?/outs? not implemented on this architecture\n");
  21 }
  22
  23 void insl(unsigned int port, void *to, int len)
  24 {
  25         print_warning();
  26 }
  27
  28 void insb(unsigned int port, void *to, int len)
  29 {
  30         print_warning();
  31 }
  32
  33 void outsl(unsigned int port, const void *from, int len)
  34 {
  35         print_warning();
  36 }
  37
  38 void outsb(unsigned int port, const void *from, int len)
  39 {
  40         print_warning();
  41 }
  42
  43 /* these should be in assembler again */
  44
  45 /*
  46  * Purpose: read a block of data from a hardware register to memory.
  47  * Proto  : insw(int from_port, void *to, int len_in_words);
  48  * Proto  : inswb(int from_port, void *to, int len_in_bytes);
  49  * Notes  : increment to
  50  */
  51
  52 void insw(unsigned int port, void *to, int len)
  53 {
  54         int i;
  55
  56         for (i = 0; i < len; i++)
  57                 ((unsigned short *) to)[i] = inw(port);
  58 }
  59
  60 void inswb(unsigned int port, void *to, int len)
  61 {
  62         insw(port, to, len >> 2);
  63 }
  64
  65 /*
  66  * Purpose: write a block of data from memory to a hardware register.
  67  * Proto  : outsw(int to_reg, void *from, int len_in_words);
  68  * Proto  : outswb(int to_reg, void *from, int len_in_bytes);
  69  * Notes  : increments from
  70  */
  71
  72 void outsw(unsigned int port, const void *from, int len)
  73 {
  74         int i;
  75
  76         for (i = 0; i < len; i++)
  77                 outw(((unsigned short *) from)[i], port);
  78 }
  79
  80 void outswb(unsigned int port, const void *from, int len)
  81 {
  82         outsw(port, from, len >> 2);
  83 }