drivers/net/8390_redwood.h

   1 /*
   2  *
   3  *    Module name: 8390_redwood.h
   4  *
   5  *    Description:
   6  *      special hacks for 8390 STNIC on IBM Redwood board
   7  *
   8  */
   9
  10 #ifndef __8390_REDWOOD_H__
  11 #define __8390_REDWOOD_H__
  12
  13 /*
  14   FTR made these routines, ostensibly to 'slow down' access the 8390
  15   chip.  I found it worked fine without them.  I'm not sure they are
  16   required...
  17 */
  18
  19 #undef  outb_p
  20 #undef  inb_p
  21 #undef  inb
  22 #undef  outb
  23
  24 #define FTR_DELAY_HACK
  25 #ifdef  FTR_DELAY_HACK
  26
  27 static inline unsigned char inb_p(long address)
  28 {
  29         readb((void *)(address & 0xffffff00) + 0x40);
  30         return readb(address);
  31 }
  32
  33 static inline void outb_p(unsigned char value, long address)
  34 {
  35         readb((void *)(address & 0xffffff00) + 0x40);
  36         writeb(value, address);
  37 }
  38
  39 static inline unsigned char inb(long address)
  40 {
  41         readb((void *)(address & 0xffffff00) + 0x40);
  42         return readb(address);
  43 }
  44
  45 static inline void outb(unsigned char value, long address)
  46 {
  47         readb((void *)(address & 0xffffff00) + 0x40);
  48         writeb(value, address);
  49 }
  50
  51 #else /* !FTR_DELAY_HACK */
  52
  53 #define inb_p   readb
  54 #define outb_p  writeb
  55 #define inb     readb
  56 #define outb    writeb
  57
  58 #endif /* FTR_DELAY_HACK */
  59
  60
  61 #endif /* __8390_REDWOOD_H__ */
  62