LXR linux/drivers/net/arcnet/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#include <linux/leds.h>
  30
  31int com20020_check(struct net_device *dev);
  32int com20020_found(struct net_device *dev, int shared);
  33extern const struct net_device_ops com20020_netdev_ops;
  34
  35/* The number of low I/O ports used by the card. */
  36#define ARCNET_TOTAL_SIZE 8
  37
  38#define PLX_PCI_MAX_CARDS 2
  39
  40struct ledoffsets {
  41        int green;
  42        int red;
  43};
  44
  45struct com20020_pci_channel_map {
  46        u32 bar;
  47        u32 offset;
  48        u32 size;               /* 0x00 - auto, e.g. length of entire bar */
  49};
  50
  51struct com20020_pci_card_info {
  52        const char *name;
  53        int devcount;
  54
  55        struct com20020_pci_channel_map chan_map_tbl[PLX_PCI_MAX_CARDS];
  56        struct com20020_pci_channel_map misc_map;
  57
  58        struct ledoffsets leds[PLX_PCI_MAX_CARDS];
  59        int rotary;
  60
  61        unsigned int flags;
  62};
  63
  64struct com20020_priv {
  65        struct com20020_pci_card_info *ci;
  66        struct list_head list_dev;
  67        resource_size_t misc;
  68};
  69
  70struct com20020_dev {
  71        struct list_head list;
  72        struct net_device *dev;
  73
  74        struct led_classdev tx_led;
  75        struct led_classdev recon_led;
  76
  77        struct com20020_priv *pci_priv;
  78        int index;
  79};
  80
  81#define COM20020_REG_W_INTMASK  0       /* writable */
  82#define COM20020_REG_R_STATUS   0       /* readable */
  83#define COM20020_REG_W_COMMAND  1       /* standard arcnet commands */
  84#define COM20020_REG_R_DIAGSTAT 1       /* diagnostic status */
  85#define COM20020_REG_W_ADDR_HI  2       /* control for IO-mapped memory */
  86#define COM20020_REG_W_ADDR_LO  3
  87#define COM20020_REG_RW_MEMDATA 4       /* data port for IO-mapped memory */
  88#define COM20020_REG_W_SUBADR   5       /* the extended port _XREG refers to */
  89#define COM20020_REG_W_CONFIG   6       /* configuration */
  90#define COM20020_REG_W_XREG     7       /* extra
  91                                         * (indexed by _CONFIG or _SUBADDR)
  92                                         */
  93
  94/* in the ADDR_HI register */
  95#define RDDATAflag      0x80    /* next access is a read (not a write) */
  96
  97/* in the DIAGSTAT register */
  98#define NEWNXTIDflag    0x02    /* ID to which token is passed has changed */
  99
 100/* in the CONFIG register */
 101#define RESETcfg        0x80    /* put card in reset state */
 102#define TXENcfg         0x20    /* enable TX */
 103#define XTOcfg(x)       ((x) << 3)      /* extended timeout */
 104
 105/* in SETUP register */
 106#define PROMISCset      0x10    /* enable RCV_ALL */
 107#define P1MODE          0x80    /* enable P1-MODE for Backplane */
 108#define SLOWARB         0x01    /* enable Slow Arbitration for >=5Mbps */
 109
 110/* COM2002x */
 111#define SUB_TENTATIVE   0       /* tentative node ID */
 112#define SUB_NODE        1       /* node ID */
 113#define SUB_SETUP1      2       /* various options */
 114#define SUB_TEST        3       /* test/diag register */
 115
 116/* COM20022 only */
 117#define SUB_SETUP2      4       /* sundry options */
 118#define SUB_BUSCTL      5       /* bus control options */
 119#define SUB_DMACOUNT    6       /* DMA count options */
 120
 121static inline void com20020_set_subaddress(struct arcnet_local *lp,
 122                                           int ioaddr, int val)
 123{
 124        if (val < 4) {
 125                lp->config = (lp->config & ~0x03) | val;
 126                arcnet_outb(lp->config, ioaddr, COM20020_REG_W_CONFIG);
 127        } else {
 128                arcnet_outb(val, ioaddr, COM20020_REG_W_SUBADR);
 129        }
 130}
 131
 132#endif /* __COM20020_H */
 133