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