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->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
162 p_dev->io.NumPorts1 = 16;
163 p_dev->io.IOAddrLines = 16;
164 p_dev->conf.Attributes = CONF_ENABLE_IRQ;
165 p_dev->conf.IntType = INT_MEMORY_AND_IO;
170 return com20020_config(p_dev);
176 } /* com20020_attach */
178 /*======================================================================
180 This deletes a driver "instance". The device is de-registered
181 with Card Services. If it has been released, all local data
182 structures are freed. Otherwise, the structures will be freed
183 when the device is released.
185 ======================================================================*/
187 static void com20020_detach(struct pcmcia_device *link)
189 struct com20020_dev_t *info = link->priv;
190 struct net_device *dev = info->dev;
192 dev_dbg(&link->dev, "detach...\n");
194 dev_dbg(&link->dev, "com20020_detach\n");
196 dev_dbg(&link->dev, "unregister...\n");
198 unregister_netdev(dev);
201 * this is necessary because we register our IRQ separately
202 * from card services.
205 free_irq(dev->irq, dev);
207 com20020_release(link);
209 /* Unlink device structure, free bits */
210 dev_dbg(&link->dev, "unlinking...\n");
216 dev_dbg(&link->dev, "kfree...\n");
219 dev_dbg(&link->dev, "kfree2...\n");
223 } /* com20020_detach */
225 /*======================================================================
227 com20020_config() is scheduled to run after a CARD_INSERTION event
228 is received, to configure the PCMCIA socket, and to make the
229 device available to the system.
231 ======================================================================*/
233 static int com20020_config(struct pcmcia_device *link)
235 struct arcnet_local *lp;
236 com20020_dev_t *info;
237 struct net_device *dev;
244 dev_dbg(&link->dev, "config...\n");
246 dev_dbg(&link->dev, "com20020_config\n");
248 dev_dbg(&link->dev, "baseport1 is %Xh\n", link->io.BasePort1);
250 if (!link->io.BasePort1)
252 for (ioaddr = 0x100; ioaddr < 0x400; ioaddr += 0x10)
254 link->io.BasePort1 = ioaddr;
255 i = pcmcia_request_io(link, &link->io);
261 i = pcmcia_request_io(link, &link->io);
265 dev_dbg(&link->dev, "requestIO failed totally!\n");
269 ioaddr = dev->base_addr = link->resource[0]->start;
270 dev_dbg(&link->dev, "got ioaddr %Xh\n", ioaddr);
272 dev_dbg(&link->dev, "request IRQ %d\n",
276 dev_dbg(&link->dev, "requestIRQ failed totally!\n");
280 dev->irq = link->irq;
282 ret = pcmcia_request_configuration(link, &link->conf);
286 if (com20020_check(dev))
292 lp = netdev_priv(dev);
293 lp->card_name = "PCMCIA COM20020";
294 lp->card_flags = ARC_CAN_10MBIT; /* pretend all of them can 10Mbit */
296 SET_NETDEV_DEV(dev, &link->dev);
298 i = com20020_found(dev, 0); /* calls register_netdev */
301 dev_printk(KERN_NOTICE, &link->dev,
302 "com20020_cs: com20020_found() failed\n");
306 dev_dbg(&link->dev,KERN_INFO "%s: port %#3lx, irq %d\n",
307 dev->name, dev->base_addr, dev->irq);
311 dev_dbg(&link->dev, "com20020_config failed...\n");
312 com20020_release(link);
314 } /* com20020_config */
316 /*======================================================================
318 After a card is removed, com20020_release() will unregister the net
319 device, and release the PCMCIA configuration. If the device is
320 still open, this will be postponed until it is closed.
322 ======================================================================*/
324 static void com20020_release(struct pcmcia_device *link)
326 dev_dbg(&link->dev, "com20020_release\n");
327 pcmcia_disable_device(link);
330 static int com20020_suspend(struct pcmcia_device *link)
332 com20020_dev_t *info = link->priv;
333 struct net_device *dev = info->dev;
336 netif_device_detach(dev);
341 static int com20020_resume(struct pcmcia_device *link)
343 com20020_dev_t *info = link->priv;
344 struct net_device *dev = info->dev;
347 int ioaddr = dev->base_addr;
348 struct arcnet_local *lp = netdev_priv(dev);
355 static struct pcmcia_device_id com20020_ids[] = {
356 PCMCIA_DEVICE_PROD_ID12("Contemporary Control Systems, Inc.",
357 "PCM20 Arcnet Adapter", 0x59991666, 0x95dfffaf),
358 PCMCIA_DEVICE_PROD_ID12("SoHard AG",
359 "SH ARC PCMCIA", 0xf8991729, 0x69dff0c7),
362 MODULE_DEVICE_TABLE(pcmcia, com20020_ids);
364 static struct pcmcia_driver com20020_cs_driver = {
365 .owner = THIS_MODULE,
367 .name = "com20020_cs",
369 .probe = com20020_probe,
370 .remove = com20020_detach,
371 .id_table = com20020_ids,
372 .suspend = com20020_suspend,
373 .resume = com20020_resume,
376 static int __init init_com20020_cs(void)
378 return pcmcia_register_driver(&com20020_cs_driver);
381 static void __exit exit_com20020_cs(void)
383 pcmcia_unregister_driver(&com20020_cs_driver);
386 module_init(init_com20020_cs);
387 module_exit(exit_com20020_cs);