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);
32void com20020_remove(struct net_device *dev);
33
34/* The number of low I/O ports used by the card. */
35#define ARCNET_TOTAL_SIZE 9
36
37/* various register addresses */
38#define _INTMASK  (ioaddr+0)	/* writable */
39#define _STATUS   (ioaddr+0)	/* readable */
40#define _COMMAND  (ioaddr+1)	/* standard arcnet commands */
41#define _DIAGSTAT (ioaddr+1)	/* diagnostic status register */
42#define _ADDR_HI  (ioaddr+2)	/* control registers for IO-mapped memory */
43#define _ADDR_LO  (ioaddr+3)
44#define _MEMDATA  (ioaddr+4)	/* data port for IO-mapped memory */
45#define _SUBADR   (ioaddr+5)	/* the extended port _XREG refers to */
46#define _CONFIG   (ioaddr+6)	/* configuration register */
47#define _XREG     (ioaddr+7)	/* extra registers (indexed by _CONFIG
48					or _SUBADR) */
49
50/* in the ADDR_HI register */
51#define RDDATAflag	0x80	/* next access is a read (not a write) */
52
53/* in the DIAGSTAT register */
54#define NEWNXTIDflag	0x02	/* ID to which token is passed has changed */
55
56/* in the CONFIG register */
57#define RESETcfg	0x80	/* put card in reset state */
58#define TXENcfg		0x20	/* enable TX */
59
60/* in SETUP register */
61#define PROMISCset	0x10	/* enable RCV_ALL */
62
63/* COM2002x */
64#define SUB_TENTATIVE	0	/* tentative node ID */
65#define SUB_NODE	1	/* node ID */
66#define SUB_SETUP1	2	/* various options */
67#define SUB_TEST	3	/* test/diag register */
68
69/* COM20022 only */
70#define SUB_SETUP2	4	/* sundry options */
71#define SUB_BUSCTL	5	/* bus control options */
72#define SUB_DMACOUNT	6	/* DMA count options */
73
74#define SET_SUBADR(x) do { \
75	if ((x) < 4) \
76	{ \
77		lp->config = (lp->config & ~0x03) | (x); \
78		SETCONF; \
79	} \
80	else \
81	{ \
82		outb(x, _SUBADR); \
83	} \
84} while (0)
85
86#undef ARCRESET
87#undef ASTATUS
88#undef ACOMMAND
89#undef AINTMASK
90
91#define ARCRESET { outb(lp->config | 0x80, _CONFIG); \
92		    udelay(5);                        \
93		    outb(lp->config , _CONFIG);       \
94                  }
95#define ARCRESET0 { outb(0x18 | 0x80, _CONFIG);   \
96		    udelay(5);                       \
97		    outb(0x18 , _CONFIG);            \
98                  }
99
100#define ASTATUS()	inb(_STATUS)
101#define ACOMMAND(cmd)	outb((cmd),_COMMAND)
102#define AINTMASK(msk)	outb((msk),_INTMASK)
103
104#define SETCONF		outb(lp->config, _CONFIG)
105
106#endif /* __COM20020_H */
107