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
31 int com20020_check(struct net_device *dev);
32 int com20020_found(struct net_device *dev, int shared);
33 extern 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
40 struct ledoffsets {
41 int green;
42 int red;
43 };
44
45 struct com20020_pci_channel_map {
46 u32 bar;
47 u32 offset;
48 u32 size; /* 0x00 - auto, e.g. length of entire bar */
49 };
50
51 struct 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
64 struct com20020_priv {
65 struct com20020_pci_card_info *ci;
66 struct list_head list_dev;
67 resource_size_t misc;
68 };
69
70 struct 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
com20020_set_subaddress(struct arcnet_local * lp,int ioaddr,int val)121 static 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 */
133