/*
 * Linux ARCnet driver - COM20020 chipset support - function declarations
 *
 * Written 1997 by David Woodhouse.
 * Written 1994-1999 by Avery Pennarun.
 * Derived from skeleton.c by Donald Becker.
 *
 * Special thanks to Contemporary Controls, Inc. (www.ccontrols.com)
 *  for sponsoring the further development of this driver.
 *
 * **********************
 *
 * The original copyright of skeleton.c was as follows:
 *
 * skeleton.c Written 1993 by Donald Becker.
 * Copyright 1993 United States Government as represented by the
 * Director, National Security Agency.  This software may only be used
 * and distributed according to the terms of the GNU General Public License as
 * modified by SRC, incorporated herein by reference.
 *
 * **********************
 *
 * For more details, see drivers/net/arcnet.c
 *
 * **********************
 */
#ifndef __COM20020_H
#define __COM20020_H
#include <linux/leds.h>

int com20020_check(struct net_device *dev);
int com20020_found(struct net_device *dev, int shared);
extern const struct net_device_ops com20020_netdev_ops;

/* The number of low I/O ports used by the card. */
#define ARCNET_TOTAL_SIZE 8

#define PLX_PCI_MAX_CARDS 2

struct ledoffsets {
        int green;
        int red;
};

struct com20020_pci_channel_map {
        u32 bar;
        u32 offset;
        u32 size;               /* 0x00 - auto, e.g. length of entire bar */
};

struct com20020_pci_card_info {
        const char *name;
        u8 devcount;

        struct com20020_pci_channel_map chan_map_tbl[PLX_PCI_MAX_CARDS];
        struct com20020_pci_channel_map misc_map;

        struct ledoffsets leds[PLX_PCI_MAX_CARDS];
        int rotary;

        unsigned int flags;
};

struct com20020_priv {
        struct com20020_pci_card_info *ci;
        struct list_head list_dev;
        resource_size_t misc;
};

struct com20020_dev {
        struct list_head list;
        struct net_device *dev;

        struct led_classdev tx_led;
        struct led_classdev recon_led;

        struct com20020_priv *pci_priv;
        int index;
};

#define COM20020_REG_W_INTMASK  0       /* writable */
#define COM20020_REG_R_STATUS   0       /* readable */
#define COM20020_REG_W_COMMAND  1       /* standard arcnet commands */
#define COM20020_REG_R_DIAGSTAT 1       /* diagnostic status */
#define COM20020_REG_W_ADDR_HI  2       /* control for IO-mapped memory */
#define COM20020_REG_W_ADDR_LO  3
#define COM20020_REG_RW_MEMDATA 4       /* data port for IO-mapped memory */
#define COM20020_REG_W_SUBADR   5       /* the extended port _XREG refers to */
#define COM20020_REG_W_CONFIG   6       /* configuration */
#define COM20020_REG_W_XREG     7       /* extra
                                         * (indexed by _CONFIG or _SUBADDR)
                                         */

/* in the ADDR_HI register */
#define RDDATAflag      0x80    /* next access is a read (not a write) */

/* in the DIAGSTAT register */
#define NEWNXTIDflag    0x02    /* ID to which token is passed has changed */

/* in the CONFIG register */
#define RESETcfg        0x80    /* put card in reset state */
#define TXENcfg         0x20    /* enable TX */
#define XTOcfg(x)       ((x) << 3)      /* extended timeout */

/* in SETUP register */
#define PROMISCset      0x10    /* enable RCV_ALL */
#define P1MODE          0x80    /* enable P1-MODE for Backplane */
#define SLOWARB         0x01    /* enable Slow Arbitration for >=5Mbps */

/* COM2002x */
#define SUB_TENTATIVE   0       /* tentative node ID */
#define SUB_NODE        1       /* node ID */
#define SUB_SETUP1      2       /* various options */
#define SUB_TEST        3       /* test/diag register */

/* COM20022 only */
#define SUB_SETUP2      4       /* sundry options */
#define SUB_BUSCTL      5       /* bus control options */
#define SUB_DMACOUNT    6       /* DMA count options */

static inline void com20020_set_subaddress(struct arcnet_local *lp,
                                           int ioaddr, int val)
{
        if (val < 4) {
                lp->config = (lp->config & ~0x03) | val;
                outb(lp->config, ioaddr + COM20020_REG_W_CONFIG);
        } else {
                outb(val, ioaddr + COM20020_REG_W_SUBADR);
        }
}

#endif /* __COM20020_H */