2 * Linux ARCnet driver - COM20020 PCMCIA support
4 * Written 1994-1999 by Avery Pennarun,
5 * based on an ISA version by David Woodhouse.
6 * Derived from ibmtr_cs.c by Steve Kipisz (pcmcia-cs 3.1.4)
7 * which was derived from pcnet_cs.c by David Hinds.
8 * Some additional portions derived from skeleton.c by Donald Becker.
10 * Special thanks to Contemporary Controls, Inc. (www.ccontrols.com)
11 * for sponsoring the further development of this driver.
13 * **********************
15 * The original copyright of skeleton.c was as follows:
17 * skeleton.c Written 1993 by Donald Becker.
18 * Copyright 1993 United States Government as represented by the
19 * Director, National Security Agency. This software may only be used
20 * and distributed according to the terms of the GNU General Public License as
21 * modified by SRC, incorporated herein by reference.
23 * **********************
25 * Arnaldo Carvalho de Melo <acme@conectiva.com.br> - 08/08/2000
26 * - reorganize kmallocs in com20020_attach, checking all for failure
27 * and releasing the previous allocations if one fails
28 * **********************
30 * For more details, see drivers/net/arcnet.c
32 * **********************
34 #include <linux/kernel.h>
35 #include <linux/init.h>
36 #include <linux/ptrace.h>
37 #include <linux/slab.h>
38 #include <linux/string.h>
39 #include <linux/timer.h>
40 #include <linux/delay.h>
41 #include <linux/module.h>
42 #include <linux/netdevice.h>
43 #include <linux/arcdevice.h>
44 #include <linux/com20020.h>
46 #include <pcmcia/cs.h>
47 #include <pcmcia/cistpl.h>
48 #include <pcmcia/ds.h>
51 #include <asm/system.h>
53 #define VERSION "arcnet: COM20020 PCMCIA support loaded.\n"
57 static void regdump(struct net_device
*dev
)
59 int ioaddr
= dev
->base_addr
;
62 printk("com20020 register dump:\n");
63 for (count
= ioaddr
; count
< ioaddr
+ 16; count
++)
66 printk("\n%04X: ", count
);
67 printk("%02X ", inb(count
));
71 printk("buffer0 dump:\n");
72 /* set up the address register */
74 outb((count
>> 8) | RDDATAflag
| AUTOINCflag
, _ADDR_HI
);
75 outb(count
& 0xff, _ADDR_LO
);
77 for (count
= 0; count
< 256+32; count
++)
80 printk("\n%04X: ", count
);
83 printk("%02X ", inb(_MEMDATA
));
90 static inline void regdump(struct net_device
*dev
) { }
95 /*====================================================================*/
97 /* Parameters that can be set with 'insmod' */
100 static int timeout
= 3;
101 static int backplane
;
105 module_param(node
, int, 0);
106 module_param(timeout
, int, 0);
107 module_param(backplane
, int, 0);
108 module_param(clockp
, int, 0);
109 module_param(clockm
, int, 0);
111 MODULE_LICENSE("GPL");
113 /*====================================================================*/
115 static int com20020_config(struct pcmcia_device
*link
);
116 static void com20020_release(struct pcmcia_device
*link
);
118 static void com20020_detach(struct pcmcia_device
*p_dev
);
120 /*====================================================================*/
122 typedef struct com20020_dev_t
{
123 struct net_device
*dev
;
126 /*======================================================================
128 com20020_attach() creates an "instance" of the driver, allocating
129 local data structures for one device. The device is registered
132 ======================================================================*/
134 static int com20020_probe(struct pcmcia_device
*p_dev
)
136 com20020_dev_t
*info
;
137 struct net_device
*dev
;
138 struct arcnet_local
*lp
;
140 dev_dbg(&p_dev
->dev
, "com20020_attach()\n");
142 /* Create new network device */
143 info
= kzalloc(sizeof(struct com20020_dev_t
), GFP_KERNEL
);
145 goto fail_alloc_info
;
147 dev
= alloc_arcdev("");
151 lp
= netdev_priv(dev
);
152 lp
->timeout
= timeout
;
153 lp
->backplane
= backplane
;
155 lp
->clockm
= clockm
& 3;
156 lp
->hw
.owner
= THIS_MODULE
;
158 /* fill in our module parameters as defaults */
159 dev
->dev_addr
[0] = node
;
161 p_dev
->resource
[0]->flags
|= IO_DATA_PATH_WIDTH_8
;
162 p_dev
->resource
[0]->end
= 16;
163 p_dev
->conf
.Attributes
= CONF_ENABLE_IRQ
;
164 p_dev
->conf
.IntType
= INT_MEMORY_AND_IO
;
169 return com20020_config(p_dev
);
175 } /* com20020_attach */
177 /*======================================================================
179 This deletes a driver "instance". The device is de-registered
180 with Card Services. If it has been released, all local data
181 structures are freed. Otherwise, the structures will be freed
182 when the device is released.
184 ======================================================================*/
186 static void com20020_detach(struct pcmcia_device
*link
)
188 struct com20020_dev_t
*info
= link
->priv
;
189 struct net_device
*dev
= info
->dev
;
191 dev_dbg(&link
->dev
, "detach...\n");
193 dev_dbg(&link
->dev
, "com20020_detach\n");
195 dev_dbg(&link
->dev
, "unregister...\n");
197 unregister_netdev(dev
);
200 * this is necessary because we register our IRQ separately
201 * from card services.
204 free_irq(dev
->irq
, dev
);
206 com20020_release(link
);
208 /* Unlink device structure, free bits */
209 dev_dbg(&link
->dev
, "unlinking...\n");
215 dev_dbg(&link
->dev
, "kfree...\n");
218 dev_dbg(&link
->dev
, "kfree2...\n");
222 } /* com20020_detach */
224 /*======================================================================
226 com20020_config() is scheduled to run after a CARD_INSERTION event
227 is received, to configure the PCMCIA socket, and to make the
228 device available to the system.
230 ======================================================================*/
232 static int com20020_config(struct pcmcia_device
*link
)
234 struct arcnet_local
*lp
;
235 com20020_dev_t
*info
;
236 struct net_device
*dev
;
243 dev_dbg(&link
->dev
, "config...\n");
245 dev_dbg(&link
->dev
, "com20020_config\n");
247 dev_dbg(&link
->dev
, "baseport1 is %Xh\n",
248 (unsigned int) link
->resource
[0]->start
);
253 if (!link
->resource
[0]->start
)
255 for (ioaddr
= 0x100; ioaddr
< 0x400; ioaddr
+= 0x10)
257 link
->resource
[0]->start
= ioaddr
;
258 i
= pcmcia_request_io(link
);
264 i
= pcmcia_request_io(link
);
268 dev_dbg(&link
->dev
, "requestIO failed totally!\n");
272 ioaddr
= dev
->base_addr
= link
->resource
[0]->start
;
273 dev_dbg(&link
->dev
, "got ioaddr %Xh\n", ioaddr
);
275 dev_dbg(&link
->dev
, "request IRQ %d\n",
279 dev_dbg(&link
->dev
, "requestIRQ failed totally!\n");
283 dev
->irq
= link
->irq
;
285 ret
= pcmcia_request_configuration(link
, &link
->conf
);
289 if (com20020_check(dev
))
295 lp
= netdev_priv(dev
);
296 lp
->card_name
= "PCMCIA COM20020";
297 lp
->card_flags
= ARC_CAN_10MBIT
; /* pretend all of them can 10Mbit */
299 SET_NETDEV_DEV(dev
, &link
->dev
);
301 i
= com20020_found(dev
, 0); /* calls register_netdev */
304 dev_printk(KERN_NOTICE
, &link
->dev
,
305 "com20020_cs: com20020_found() failed\n");
309 dev_dbg(&link
->dev
,KERN_INFO
"%s: port %#3lx, irq %d\n",
310 dev
->name
, dev
->base_addr
, dev
->irq
);
314 dev_dbg(&link
->dev
, "com20020_config failed...\n");
315 com20020_release(link
);
317 } /* com20020_config */
319 /*======================================================================
321 After a card is removed, com20020_release() will unregister the net
322 device, and release the PCMCIA configuration. If the device is
323 still open, this will be postponed until it is closed.
325 ======================================================================*/
327 static void com20020_release(struct pcmcia_device
*link
)
329 dev_dbg(&link
->dev
, "com20020_release\n");
330 pcmcia_disable_device(link
);
333 static int com20020_suspend(struct pcmcia_device
*link
)
335 com20020_dev_t
*info
= link
->priv
;
336 struct net_device
*dev
= info
->dev
;
339 netif_device_detach(dev
);
344 static int com20020_resume(struct pcmcia_device
*link
)
346 com20020_dev_t
*info
= link
->priv
;
347 struct net_device
*dev
= info
->dev
;
350 int ioaddr
= dev
->base_addr
;
351 struct arcnet_local
*lp
= netdev_priv(dev
);
358 static struct pcmcia_device_id com20020_ids
[] = {
359 PCMCIA_DEVICE_PROD_ID12("Contemporary Control Systems, Inc.",
360 "PCM20 Arcnet Adapter", 0x59991666, 0x95dfffaf),
361 PCMCIA_DEVICE_PROD_ID12("SoHard AG",
362 "SH ARC PCMCIA", 0xf8991729, 0x69dff0c7),
365 MODULE_DEVICE_TABLE(pcmcia
, com20020_ids
);
367 static struct pcmcia_driver com20020_cs_driver
= {
368 .owner
= THIS_MODULE
,
370 .name
= "com20020_cs",
372 .probe
= com20020_probe
,
373 .remove
= com20020_detach
,
374 .id_table
= com20020_ids
,
375 .suspend
= com20020_suspend
,
376 .resume
= com20020_resume
,
379 static int __init
init_com20020_cs(void)
381 return pcmcia_register_driver(&com20020_cs_driver
);
384 static void __exit
exit_com20020_cs(void)
386 pcmcia_unregister_driver(&com20020_cs_driver
);
389 module_init(init_com20020_cs
);
390 module_exit(exit_com20020_cs
);