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_types.h>
47 #include <pcmcia/cs.h>
48 #include <pcmcia/cistpl.h>
49 #include <pcmcia/ds.h>
52 #include <asm/system.h>
54 #define VERSION "arcnet: COM20020 PCMCIA support loaded.\n"
58 static int pc_debug = PCMCIA_DEBUG;
59 module_param(pc_debug, int, 0);
60 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
62 static void regdump(struct net_device *dev)
64 int ioaddr = dev->base_addr;
67 printk("com20020 register dump:\n");
68 for (count = ioaddr; count < ioaddr + 16; count++)
71 printk("\n%04X: ", count);
72 printk("%02X ", inb(count));
76 printk("buffer0 dump:\n");
77 /* set up the address register */
79 outb((count >> 8) | RDDATAflag | AUTOINCflag, _ADDR_HI);
80 outb(count & 0xff, _ADDR_LO);
82 for (count = 0; count < 256+32; count++)
85 printk("\n%04X: ", count);
88 printk("%02X ", inb(_MEMDATA));
95 #define DEBUG(n, args...) do { } while (0)
96 static inline void regdump(struct net_device *dev) { }
101 /*====================================================================*/
103 /* Parameters that can be set with 'insmod' */
106 static int timeout = 3;
107 static int backplane;
111 module_param(node, int, 0);
112 module_param(timeout, int, 0);
113 module_param(backplane, int, 0);
114 module_param(clockp, int, 0);
115 module_param(clockm, int, 0);
117 MODULE_LICENSE("GPL");
119 /*====================================================================*/
121 static int com20020_config(struct pcmcia_device *link);
122 static void com20020_release(struct pcmcia_device *link);
124 static void com20020_detach(struct pcmcia_device *p_dev);
126 /*====================================================================*/
128 typedef struct com20020_dev_t {
129 struct net_device *dev;
133 /*======================================================================
135 com20020_attach() creates an "instance" of the driver, allocating
136 local data structures for one device. The device is registered
139 ======================================================================*/
141 static int com20020_probe(struct pcmcia_device *p_dev)
143 com20020_dev_t *info;
144 struct net_device *dev;
145 struct arcnet_local *lp;
147 DEBUG(0, "com20020_attach()\n");
149 /* Create new network device */
150 info = kmalloc(sizeof(struct com20020_dev_t), GFP_KERNEL);
152 goto fail_alloc_info;
154 dev = alloc_arcdev("");
158 memset(info, 0, sizeof(struct com20020_dev_t));
160 lp->timeout = timeout;
161 lp->backplane = backplane;
163 lp->clockm = clockm & 3;
164 lp->hw.owner = THIS_MODULE;
166 /* fill in our module parameters as defaults */
167 dev->dev_addr[0] = node;
169 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
170 p_dev->io.NumPorts1 = 16;
171 p_dev->io.IOAddrLines = 16;
172 p_dev->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
173 p_dev->irq.IRQInfo1 = IRQ_LEVEL_ID;
174 p_dev->conf.Attributes = CONF_ENABLE_IRQ;
175 p_dev->conf.IntType = INT_MEMORY_AND_IO;
177 p_dev->irq.Instance = info->dev = dev;
180 return com20020_config(p_dev);
186 } /* com20020_attach */
188 /*======================================================================
190 This deletes a driver "instance". The device is de-registered
191 with Card Services. If it has been released, all local data
192 structures are freed. Otherwise, the structures will be freed
193 when the device is released.
195 ======================================================================*/
197 static void com20020_detach(struct pcmcia_device *link)
199 struct com20020_dev_t *info = link->priv;
200 struct net_device *dev = info->dev;
202 DEBUG(1,"detach...\n");
204 DEBUG(0, "com20020_detach(0x%p)\n", link);
206 if (link->dev_node) {
207 DEBUG(1,"unregister...\n");
209 unregister_netdev(dev);
212 * this is necessary because we register our IRQ separately
213 * from card services.
216 free_irq(dev->irq, dev);
219 com20020_release(link);
221 /* Unlink device structure, free bits */
222 DEBUG(1,"unlinking...\n");
228 DEBUG(1,"kfree...\n");
231 DEBUG(1,"kfree2...\n");
235 } /* com20020_detach */
237 /*======================================================================
239 com20020_config() is scheduled to run after a CARD_INSERTION event
240 is received, to configure the PCMCIA socket, and to make the
241 device available to the system.
243 ======================================================================*/
245 #define CS_CHECK(fn, ret) \
246 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
248 static int com20020_config(struct pcmcia_device *link)
250 struct arcnet_local *lp;
251 com20020_dev_t *info;
252 struct net_device *dev;
253 int i, last_ret, last_fn;
259 DEBUG(1,"config...\n");
261 DEBUG(0, "com20020_config(0x%p)\n", link);
263 DEBUG(1,"arcnet: baseport1 is %Xh\n", link->io.BasePort1);
265 if (!link->io.BasePort1)
267 for (ioaddr = 0x100; ioaddr < 0x400; ioaddr += 0x10)
269 link->io.BasePort1 = ioaddr;
270 i = pcmcia_request_io(link, &link->io);
276 i = pcmcia_request_io(link, &link->io);
280 DEBUG(1,"arcnet: requestIO failed totally!\n");
284 ioaddr = dev->base_addr = link->io.BasePort1;
285 DEBUG(1,"arcnet: got ioaddr %Xh\n", ioaddr);
287 DEBUG(1,"arcnet: request IRQ %d (%Xh/%Xh)\n",
288 link->irq.AssignedIRQ,
289 link->irq.IRQInfo1, link->irq.IRQInfo2);
290 i = pcmcia_request_irq(link, &link->irq);
293 DEBUG(1,"arcnet: requestIRQ failed totally!\n");
297 dev->irq = link->irq.AssignedIRQ;
299 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
301 if (com20020_check(dev))
308 lp->card_name = "PCMCIA COM20020";
309 lp->card_flags = ARC_CAN_10MBIT; /* pretend all of them can 10Mbit */
311 link->dev_node = &info->node;
312 SET_NETDEV_DEV(dev, &handle_to_dev(link));
314 i = com20020_found(dev, 0); /* calls register_netdev */
317 DEBUG(1,KERN_NOTICE "com20020_cs: com20020_found() failed\n");
318 link->dev_node = NULL;
322 strcpy(info->node.dev_name, dev->name);
324 DEBUG(1,KERN_INFO "%s: port %#3lx, irq %d\n",
325 dev->name, dev->base_addr, dev->irq);
329 cs_error(link, last_fn, last_ret);
331 DEBUG(1,"com20020_config failed...\n");
332 com20020_release(link);
334 } /* com20020_config */
336 /*======================================================================
338 After a card is removed, com20020_release() will unregister the net
339 device, and release the PCMCIA configuration. If the device is
340 still open, this will be postponed until it is closed.
342 ======================================================================*/
344 static void com20020_release(struct pcmcia_device *link)
346 DEBUG(0, "com20020_release(0x%p)\n", link);
347 pcmcia_disable_device(link);
350 static int com20020_suspend(struct pcmcia_device *link)
352 com20020_dev_t *info = link->priv;
353 struct net_device *dev = info->dev;
356 netif_device_detach(dev);
361 static int com20020_resume(struct pcmcia_device *link)
363 com20020_dev_t *info = link->priv;
364 struct net_device *dev = info->dev;
367 int ioaddr = dev->base_addr;
368 struct arcnet_local *lp = dev->priv;
375 static struct pcmcia_device_id com20020_ids[] = {
376 PCMCIA_DEVICE_PROD_ID12("Contemporary Control Systems, Inc.",
377 "PCM20 Arcnet Adapter", 0x59991666, 0x95dfffaf),
378 PCMCIA_DEVICE_PROD_ID12("SoHard AG",
379 "SH ARC PCMCIA", 0xf8991729, 0x69dff0c7),
382 MODULE_DEVICE_TABLE(pcmcia, com20020_ids);
384 static struct pcmcia_driver com20020_cs_driver = {
385 .owner = THIS_MODULE,
387 .name = "com20020_cs",
389 .probe = com20020_probe,
390 .remove = com20020_detach,
391 .id_table = com20020_ids,
392 .suspend = com20020_suspend,
393 .resume = com20020_resume,
396 static int __init init_com20020_cs(void)
398 return pcmcia_register_driver(&com20020_cs_driver);
401 static void __exit exit_com20020_cs(void)
403 pcmcia_unregister_driver(&com20020_cs_driver);
406 module_init(init_com20020_cs);
407 module_exit(exit_com20020_cs);