xref: /linux/drivers/net/arcnet/com20020.h (revision e5451c8f8330e03ad3cfa16048b4daf961af434f)
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