2 * Linux ARCnet driver - COM20020 chipset support
4 * Written 1997 by David Woodhouse.
5 * Written 1994-1999 by Avery Pennarun.
6 * Written 1999-2000 by Martin Mares <mj@ucw.cz>.
7 * Derived from skeleton.c by Donald Becker.
9 * Special thanks to Contemporary Controls, Inc. (www.ccontrols.com)
10 * for sponsoring the further development of this driver.
12 * **********************
14 * The original copyright of skeleton.c was as follows:
16 * skeleton.c Written 1993 by Donald Becker.
17 * Copyright 1993 United States Government as represented by the
18 * Director, National Security Agency. This software may only be used
19 * and distributed according to the terms of the GNU General Public License as
20 * modified by SRC, incorporated herein by reference.
22 * **********************
24 * For more details, see drivers/net/arcnet.c
26 * **********************
28 #include <linux/module.h>
29 #include <linux/moduleparam.h>
30 #include <linux/kernel.h>
31 #include <linux/types.h>
32 #include <linux/ioport.h>
33 #include <linux/slab.h>
34 #include <linux/errno.h>
35 #include <linux/delay.h>
36 #include <linux/netdevice.h>
37 #include <linux/init.h>
38 #include <linux/bootmem.h>
39 #include <linux/arcdevice.h>
40 #include <linux/com20020.h>
45 #define VERSION "arcnet: COM20020 ISA support (by David Woodhouse et al.)\n"
49 * We cannot (yet) probe for an IO mapped card, although we can check that
50 * it's where we were told it was, and even do autoirq.
52 static int __init
com20020isa_probe(struct net_device
*dev
)
55 unsigned long airqmask
;
56 struct arcnet_local
*lp
= dev
->priv
;
59 BUGLVL(D_NORMAL
) printk(VERSION
);
61 ioaddr
= dev
->base_addr
;
63 BUGMSG(D_NORMAL
, "No autoprobe (yet) for IO mapped cards; you "
64 "must specify the base address!\n");
67 if (!request_region(ioaddr
, ARCNET_TOTAL_SIZE
, "arcnet (COM20020)")) {
68 BUGMSG(D_NORMAL
, "IO region %xh-%xh already allocated.\n",
69 ioaddr
, ioaddr
+ ARCNET_TOTAL_SIZE
- 1);
72 if (ASTATUS() == 0xFF) {
73 BUGMSG(D_NORMAL
, "IO address %x empty\n", ioaddr
);
77 if (com20020_check(dev
)) {
83 /* if we do this, we're sure to get an IRQ since the
84 * card has just reset and the NORXflag is on until
85 * we tell it to start receiving.
87 BUGMSG(D_INIT_REASONS
, "intmask was %02Xh\n", inb(_INTMASK
));
89 airqmask
= probe_irq_on();
90 outb(NORXflag
, _INTMASK
);
93 dev
->irq
= probe_irq_off(airqmask
);
96 BUGMSG(D_INIT_REASONS
, "Autoprobe IRQ failed first time\n");
97 airqmask
= probe_irq_on();
98 outb(NORXflag
, _INTMASK
);
101 dev
->irq
= probe_irq_off(airqmask
);
103 BUGMSG(D_NORMAL
, "Autoprobe IRQ failed.\n");
110 lp
->card_name
= "ISA COM20020";
111 if ((err
= com20020_found(dev
, 0)) != 0)
117 release_region(ioaddr
, ARCNET_TOTAL_SIZE
);
122 static int io
= 0x0; /* <--- EDIT THESE LINES FOR YOUR CONFIGURATION */
123 static int irq
= 0; /* or use the insmod io= irq= shmem= options */
124 static char device
[9]; /* use eg. device="arc1" to change name */
125 static int timeout
= 3;
126 static int backplane
= 0;
127 static int clockp
= 0;
128 static int clockm
= 0;
130 module_param(node
, int, 0);
131 module_param(io
, int, 0);
132 module_param(irq
, int, 0);
133 module_param_string(device
, device
, sizeof(device
), 0);
134 module_param(timeout
, int, 0);
135 module_param(backplane
, int, 0);
136 module_param(clockp
, int, 0);
137 module_param(clockm
, int, 0);
139 MODULE_LICENSE("GPL");
141 static struct net_device
*my_dev
;
143 static int __init
com20020_init(void)
145 struct net_device
*dev
;
146 struct arcnet_local
*lp
;
148 dev
= alloc_arcdev(device
);
152 if (node
&& node
!= 0xff)
153 dev
->dev_addr
[0] = node
;
156 lp
->backplane
= backplane
;
157 lp
->clockp
= clockp
& 7;
158 lp
->clockm
= clockm
& 3;
159 lp
->timeout
= timeout
& 3;
160 lp
->hw
.owner
= THIS_MODULE
;
168 if (com20020isa_probe(dev
)) {
177 static void __exit
com20020_exit(void)
179 unregister_netdev(my_dev
);
180 free_irq(my_dev
->irq
, my_dev
);
181 release_region(my_dev
->base_addr
, ARCNET_TOTAL_SIZE
);
186 static int __init
com20020isa_setup(char *s
)
190 s
= get_options(s
, 8, ints
);
196 printk("com90xx: Too many arguments.\n");
197 case 6: /* Timeout */
199 case 5: /* CKP value */
201 case 4: /* Backplane flag */
203 case 3: /* Node ID */
207 case 1: /* IO address */
211 snprintf(device
, sizeof(device
), "%s", s
);
215 __setup("com20020=", com20020isa_setup
);
219 module_init(com20020_init
)
220 module_exit(com20020_exit
)