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 */