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);
32extern const struct net_device_ops com20020_netdev_ops;
33
34/* The number of low I/O ports used by the card. */
35#define ARCNET_TOTAL_SIZE 8
36
37/* various register addresses */
38#ifdef CONFIG_SA1100_CT6001
39#define BUS_ALIGN  2  /* 8 bit device on a 16 bit bus - needs padding */
40#else
41#define BUS_ALIGN  1
42#endif
43
44#define PLX_PCI_MAX_CARDS 2
45
46struct com20020_pci_channel_map {
47	u32 bar;
48	u32 offset;
49	u32 size;               /* 0x00 - auto, e.g. length of entire bar */
50};
51
52struct com20020_pci_card_info {
53	const char *name;
54	int devcount;
55
56	struct com20020_pci_channel_map chan_map_tbl[PLX_PCI_MAX_CARDS];
57
58	unsigned int flags;
59};
60
61struct com20020_priv {
62	struct com20020_pci_card_info *ci;
63	struct list_head list_dev;
64};
65
66struct com20020_dev {
67	struct list_head list;
68	struct net_device *dev;
69
70	struct com20020_priv *pci_priv;
71	int index;
72};
73
74#define _INTMASK  (ioaddr+BUS_ALIGN*0)	/* writable */
75#define _STATUS   (ioaddr+BUS_ALIGN*0)	/* readable */
76#define _COMMAND  (ioaddr+BUS_ALIGN*1)	/* standard arcnet commands */
77#define _DIAGSTAT (ioaddr+BUS_ALIGN*1)	/* diagnostic status register */
78#define _ADDR_HI  (ioaddr+BUS_ALIGN*2)	/* control registers for IO-mapped memory */
79#define _ADDR_LO  (ioaddr+BUS_ALIGN*3)
80#define _MEMDATA  (ioaddr+BUS_ALIGN*4)	/* data port for IO-mapped memory */
81#define _SUBADR   (ioaddr+BUS_ALIGN*5)	/* the extended port _XREG refers to */
82#define _CONFIG   (ioaddr+BUS_ALIGN*6)	/* configuration register */
83#define _XREG     (ioaddr+BUS_ALIGN*7)	/* extra registers (indexed by _CONFIG
84  					or _SUBADR) */
85
86/* in the ADDR_HI register */
87#define RDDATAflag	0x80	/* next access is a read (not a write) */
88
89/* in the DIAGSTAT register */
90#define NEWNXTIDflag	0x02	/* ID to which token is passed has changed */
91
92/* in the CONFIG register */
93#define RESETcfg	0x80	/* put card in reset state */
94#define TXENcfg		0x20	/* enable TX */
95
96/* in SETUP register */
97#define PROMISCset	0x10	/* enable RCV_ALL */
98#define P1MODE		0x80    /* enable P1-MODE for Backplane */
99#define SLOWARB		0x01    /* enable Slow Arbitration for >=5Mbps */
100
101/* COM2002x */
102#define SUB_TENTATIVE	0	/* tentative node ID */
103#define SUB_NODE	1	/* node ID */
104#define SUB_SETUP1	2	/* various options */
105#define SUB_TEST	3	/* test/diag register */
106
107/* COM20022 only */
108#define SUB_SETUP2	4	/* sundry options */
109#define SUB_BUSCTL	5	/* bus control options */
110#define SUB_DMACOUNT	6	/* DMA count options */
111
112#define SET_SUBADR(x) do { \
113	if ((x) < 4) \
114	{ \
115		lp->config = (lp->config & ~0x03) | (x); \
116		SETCONF; \
117	} \
118	else \
119	{ \
120		outb(x, _SUBADR); \
121	} \
122} while (0)
123
124#undef ARCRESET
125#undef ASTATUS
126#undef ACOMMAND
127#undef AINTMASK
128
129#define ARCRESET { outb(lp->config | 0x80, _CONFIG); \
130		    udelay(5);                        \
131		    outb(lp->config , _CONFIG);       \
132                  }
133#define ARCRESET0 { outb(0x18 | 0x80, _CONFIG);   \
134		    udelay(5);                       \
135		    outb(0x18 , _CONFIG);            \
136                  }
137
138#define ASTATUS()	inb(_STATUS)
139#define ADIAGSTATUS()	inb(_DIAGSTAT)
140#define ACOMMAND(cmd)	outb((cmd),_COMMAND)
141#define AINTMASK(msk)	outb((msk),_INTMASK)
142
143#define SETCONF		outb(lp->config, _CONFIG)
144
145#endif /* __COM20020_H */
146