include/linux/com20020.h

   1 /*
   2  * Linux ARCnet driver - COM20020 chipset support - function declarations
   3  *
   4  * Written 1997 by David Woodhouse.
   5  * Written 1994-1999 by Avery Pennarun.
   6  * Derived from skeleton.c by Donald Becker.
   7  *
   8  * Special thanks to Contemporary Controls, Inc. (www.ccontrols.com)
   9  *  for sponsoring the further development of this driver.
  10  *
  11  * **********************
  12  *
  13  * The original copyright of skeleton.c was as follows:
  14  *
  15  * skeleton.c Written 1993 by Donald Becker.
  16  * Copyright 1993 United States Government as represented by the
  17  * Director, National Security Agency.  This software may only be used
  18  * and distributed according to the terms of the GNU General Public License as
  19  * modified by SRC, incorporated herein by reference.
  20  *
  21  * **********************
  22  *
  23  * For more details, see drivers/net/arcnet.c
  24  *
  25  * **********************
  26  */
  27 #ifndef __COM20020_H
  28 #define __COM20020_H
  29
  30 int com20020_check(struct net_device *dev);
  31 int com20020_found(struct net_device *dev, int shared);
  32
  33 /* The number of low I/O ports used by the card. */
  34 #define ARCNET_TOTAL_SIZE 8
  35
  36 /* various register addresses */
  37 #define _INTMASK  (ioaddr+0)    /* writable */
  38 #define _STATUS   (ioaddr+0)    /* readable */
  39 #define _COMMAND  (ioaddr+1)    /* standard arcnet commands */
  40 #define _DIAGSTAT (ioaddr+1)    /* diagnostic status register */
  41 #define _ADDR_HI  (ioaddr+2)    /* control registers for IO-mapped memory */
  42 #define _ADDR_LO  (ioaddr+3)
  43 #define _MEMDATA  (ioaddr+4)    /* data port for IO-mapped memory */
  44 #define _SUBADR   (ioaddr+5)    /* the extended port _XREG refers to */
  45 #define _CONFIG   (ioaddr+6)    /* configuration register */
  46 #define _XREG     (ioaddr+7)    /* extra registers (indexed by _CONFIG
  47                                         or _SUBADR) */
  48
  49 /* in the ADDR_HI register */
  50 #define RDDATAflag      0x80    /* next access is a read (not a write) */
  51
  52 /* in the DIAGSTAT register */
  53 #define NEWNXTIDflag    0x02    /* ID to which token is passed has changed */
  54
  55 /* in the CONFIG register */
  56 #define RESETcfg        0x80    /* put card in reset state */
  57 #define TXENcfg         0x20    /* enable TX */
  58
  59 /* in SETUP register */
  60 #define PROMISCset      0x10    /* enable RCV_ALL */
  61 #define P1MODE          0x80    /* enable P1-MODE for Backplane */
  62 #define SLOWARB         0x01    /* enable Slow Arbitration for >=5Mbps */
  63
  64 /* COM2002x */
  65 #define SUB_TENTATIVE   0       /* tentative node ID */
  66 #define SUB_NODE        1       /* node ID */
  67 #define SUB_SETUP1      2       /* various options */
  68 #define SUB_TEST        3       /* test/diag register */
  69
  70 /* COM20022 only */
  71 #define SUB_SETUP2      4       /* sundry options */
  72 #define SUB_BUSCTL      5       /* bus control options */
  73 #define SUB_DMACOUNT    6       /* DMA count options */
  74
  75 #define SET_SUBADR(x) do { \
  76         if ((x) < 4) \
  77         { \
  78                 lp->config = (lp->config & ~0x03) | (x); \
  79                 SETCONF; \
  80         } \
  81         else \
  82         { \
  83                 outb(x, _SUBADR); \
  84         } \
  85 } while (0)
  86
  87 #undef ARCRESET
  88 #undef ASTATUS
  89 #undef ACOMMAND
  90 #undef AINTMASK
  91
  92 #define ARCRESET { outb(lp->config | 0x80, _CONFIG); \
  93                     udelay(5);                        \
  94                     outb(lp->config , _CONFIG);       \
  95                   }
  96 #define ARCRESET0 { outb(0x18 | 0x80, _CONFIG);   \
  97                     udelay(5);                       \
  98                     outb(0x18 , _CONFIG);            \
  99                   }
 100
 101 #define ASTATUS()       inb(_STATUS)
 102 #define ACOMMAND(cmd)   outb((cmd),_COMMAND)
 103 #define AINTMASK(msk)   outb((msk),_INTMASK)
 104
 105 #define SETCONF         outb(lp->config, _CONFIG)
 106
 107 #endif /* __COM20020_H */