drivers/dpeth/devio.c

   1 /*
   2 **  File:       devio.c         Jun. 11, 2005
   3 **
   4 **  Author:     Giovanni Falzoni <gfalzoni@inwind.it>
   5 **
   6 **  This file contains the routines for readind/writing
   7 **  from/to the device registers.
   8 */
   9
  10 #include <minix/drivers.h>
  11 #include <net/gen/ether.h>
  12 #include <net/gen/eth_io.h>
  13 #include "dp.h"
  14
  15 #if (USE_IOPL == 0)
  16
  17 static void warning(const char *type, int err)
  18 {
  19
  20   printf("Warning: eth#0 sys_%s failed (%d)\n", type, err);
  21   return;
  22 }
  23
  24 /*
  25 **  Name:       unsigned int inb(unsigned short int port);
  26 **  Function:   Reads a byte from specified i/o port.
  27 */
  28 unsigned int inb(unsigned short port)
  29 {
  30   u32_t value;
  31   int rc;
  32
  33   if ((rc = sys_inb(port, &value)) != OK) warning("inb", rc);
  34   return value;
  35 }
  36
  37 /*
  38 **  Name:       unsigned int inw(unsigned short int port);
  39 **  Function:   Reads a word from specified i/o port.
  40 */
  41 unsigned int inw(unsigned short port)
  42 {
  43   u32_t value;
  44   int rc;
  45
  46   if ((rc = sys_inw(port, &value)) != OK) warning("inw", rc);
  47   return value;
  48 }
  49
  50 /*
  51 **  Name:       unsigned int insb(unsigned short int port, int proc_nr, void *buffer, int count);
  52 **  Function:   Reads a sequence of bytes from specified i/o port to user space buffer.
  53 */
  54 void insb(unsigned short int port, endpoint_t proc_nr,
  55    void *buffer, int count)
  56 {
  57   int rc;
  58
  59   if ((rc = sys_insb(port, proc_nr, buffer, count)) != OK)
  60         warning("insb", rc);
  61   return;
  62 }
  63
  64
  65 /*
  66 **  Name:       void outb(unsigned short int port, unsigned long value);
  67 **  Function:   Writes a byte to specified i/o port.
  68 */
  69 void outb(unsigned short port, unsigned long value)
  70 {
  71   int rc;
  72
  73   if ((rc = sys_outb(port, value)) != OK) warning("outb", rc);
  74   return;
  75 }
  76
  77 /*
  78 **  Name:       void outw(unsigned short int port, unsigned long value);
  79 **  Function:   Writes a word to specified i/o port.
  80 */
  81 void outw(unsigned short port, unsigned long value)
  82 {
  83   int rc;
  84
  85   if ((rc = sys_outw(port, value)) != OK) warning("outw", rc);
  86   return;
  87 }
  88
  89 /*
  90 **  Name:       void outsb(unsigned short int port, int proc_nr, void *buffer, int count);
  91 **  Function:   Writes a sequence of bytes from user space to specified i/o port.
  92 */
  93 void outsb(unsigned short port, endpoint_t proc_nr, void *buffer, int count)
  94 {
  95   int rc;
  96
  97   if ((rc = sys_outsb(port, proc_nr, buffer, count)) != OK)
  98         warning("outsb", rc);
  99   return;
 100 }
 101
 102 #else
 103 #error To be implemented
 104 #endif                          /* USE_IOPL */
 105 /**  devio.c  **/