linux/include/linux/com20020.h
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   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
  30int com20020_check(struct net_device *dev);
  31int com20020_found(struct net_device *dev, int shared);
  32extern const struct net_device_ops com20020_netdev_ops;
  33
  34/* The number of low I/O ports used by the card. */
  35#define ARCNET_TOTAL_SIZE 8
  36
  37/* various register addresses */
  38#ifdef CONFIG_SA1100_CT6001
  39#define BUS_ALIGN  2  /* 8 bit device on a 16 bit bus - needs padding */
  40#else
  41#define BUS_ALIGN  1
  42#endif
  43
  44
  45#define _INTMASK  (ioaddr+BUS_ALIGN*0)  /* writable */
  46#define _STATUS   (ioaddr+BUS_ALIGN*0)  /* readable */
  47#define _COMMAND  (ioaddr+BUS_ALIGN*1)  /* standard arcnet commands */
  48#define _DIAGSTAT (ioaddr+BUS_ALIGN*1)  /* diagnostic status register */
  49#define _ADDR_HI  (ioaddr+BUS_ALIGN*2)  /* control registers for IO-mapped memory */
  50#define _ADDR_LO  (ioaddr+BUS_ALIGN*3)
  51#define _MEMDATA  (ioaddr+BUS_ALIGN*4)  /* data port for IO-mapped memory */
  52#define _SUBADR   (ioaddr+BUS_ALIGN*5)  /* the extended port _XREG refers to */
  53#define _CONFIG   (ioaddr+BUS_ALIGN*6)  /* configuration register */
  54#define _XREG     (ioaddr+BUS_ALIGN*7)  /* extra registers (indexed by _CONFIG
  55                                        or _SUBADR) */
  56
  57/* in the ADDR_HI register */
  58#define RDDATAflag      0x80    /* next access is a read (not a write) */
  59
  60/* in the DIAGSTAT register */
  61#define NEWNXTIDflag    0x02    /* ID to which token is passed has changed */
  62
  63/* in the CONFIG register */
  64#define RESETcfg        0x80    /* put card in reset state */
  65#define TXENcfg         0x20    /* enable TX */
  66
  67/* in SETUP register */
  68#define PROMISCset      0x10    /* enable RCV_ALL */
  69#define P1MODE          0x80    /* enable P1-MODE for Backplane */
  70#define SLOWARB         0x01    /* enable Slow Arbitration for >=5Mbps */
  71
  72/* COM2002x */
  73#define SUB_TENTATIVE   0       /* tentative node ID */
  74#define SUB_NODE        1       /* node ID */
  75#define SUB_SETUP1      2       /* various options */
  76#define SUB_TEST        3       /* test/diag register */
  77
  78/* COM20022 only */
  79#define SUB_SETUP2      4       /* sundry options */
  80#define SUB_BUSCTL      5       /* bus control options */
  81#define SUB_DMACOUNT    6       /* DMA count options */
  82
  83#define SET_SUBADR(x) do { \
  84        if ((x) < 4) \
  85        { \
  86                lp->config = (lp->config & ~0x03) | (x); \
  87                SETCONF; \
  88        } \
  89        else \
  90        { \
  91                outb(x, _SUBADR); \
  92        } \
  93} while (0)
  94
  95#undef ARCRESET
  96#undef ASTATUS
  97#undef ACOMMAND
  98#undef AINTMASK
  99
 100#define ARCRESET { outb(lp->config | 0x80, _CONFIG); \
 101                    udelay(5);                        \
 102                    outb(lp->config , _CONFIG);       \
 103                  }
 104#define ARCRESET0 { outb(0x18 | 0x80, _CONFIG);   \
 105                    udelay(5);                       \
 106                    outb(0x18 , _CONFIG);            \
 107                  }
 108
 109#define ASTATUS()       inb(_STATUS)
 110#define ADIAGSTATUS()   inb(_DIAGSTAT)
 111#define ACOMMAND(cmd)   outb((cmd),_COMMAND)
 112#define AINTMASK(msk)   outb((msk),_INTMASK)
 113
 114#define SETCONF         outb(lp->config, _CONFIG)
 115
 116#endif /* __COM20020_H */
 117
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