io-shark.c
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:2k
- /*
- * linux/arch/arm/lib/io-shark.c
- *
- * by Alexander Schulz
- *
- * derived from:
- * linux/arch/arm/lib/io-ebsa.S
- * Copyright (C) 1995, 1996 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
- #include <linux/kernel.h>
- #include <asm/io.h>
- void print_warning(void)
- {
- printk(KERN_WARNING "ins?/outs? not implemented on this architecturen");
- }
- void insl(unsigned int port, void *to, int len)
- {
- print_warning();
- }
- void insb(unsigned int port, void *to, int len)
- {
- print_warning();
- }
- void outsl(unsigned int port, const void *from, int len)
- {
- print_warning();
- }
- void outsb(unsigned int port, const void *from, int len)
- {
- print_warning();
- }
- /* these should be in assembler again */
- /*
- * Purpose: read a block of data from a hardware register to memory.
- * Proto : insw(int from_port, void *to, int len_in_words);
- * Proto : inswb(int from_port, void *to, int len_in_bytes);
- * Notes : increment to
- */
- void insw(unsigned int port, void *to, int len)
- {
- int i;
- for (i = 0; i < len; i++)
- ((unsigned short *) to)[i] = inw(port);
- }
- void inswb(unsigned int port, void *to, int len)
- {
- insw(port, to, len >> 2);
- }
- /*
- * Purpose: write a block of data from memory to a hardware register.
- * Proto : outsw(int to_reg, void *from, int len_in_words);
- * Proto : outswb(int to_reg, void *from, int len_in_bytes);
- * Notes : increments from
- */
- void outsw(unsigned int port, const void *from, int len)
- {
- int i;
- for (i = 0; i < len; i++)
- outw(((unsigned short *) from)[i], port);
- }
- void outswb(unsigned int port, const void *from, int len)
- {
- outsw(port, from, len >> 2);
- }