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 void com20020_config(dev_link_t *link);
122 static void com20020_release(dev_link_t *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_attach(struct pcmcia_device *p_dev)
144 com20020_dev_t *info;
145 struct net_device *dev;
146 struct arcnet_local *lp;
148 DEBUG(0, "com20020_attach()\n");
150 /* Create new network device */
151 link = kmalloc(sizeof(struct dev_link_t), GFP_KERNEL);
155 info = kmalloc(sizeof(struct com20020_dev_t), GFP_KERNEL);
157 goto fail_alloc_info;
159 dev = alloc_arcdev("");
163 memset(info, 0, sizeof(struct com20020_dev_t));
164 memset(link, 0, sizeof(struct dev_link_t));
166 lp->timeout = timeout;
167 lp->backplane = backplane;
169 lp->clockm = clockm & 3;
170 lp->hw.owner = THIS_MODULE;
172 /* fill in our module parameters as defaults */
173 dev->dev_addr[0] = node;
175 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
176 link->io.NumPorts1 = 16;
177 link->io.IOAddrLines = 16;
178 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
179 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
180 link->conf.Attributes = CONF_ENABLE_IRQ;
182 link->conf.IntType = INT_MEMORY_AND_IO;
183 link->conf.Present = PRESENT_OPTION;
185 link->irq.Instance = info->dev = dev;
188 link->state |= DEV_PRESENT;
189 com20020_config(link);
198 } /* com20020_attach */
200 /*======================================================================
202 This deletes a driver "instance". The device is de-registered
203 with Card Services. If it has been released, all local data
204 structures are freed. Otherwise, the structures will be freed
205 when the device is released.
207 ======================================================================*/
209 static void com20020_detach(struct pcmcia_device *p_dev)
211 dev_link_t *link = dev_to_instance(p_dev);
212 struct com20020_dev_t *info = link->priv;
213 struct net_device *dev = info->dev;
215 DEBUG(1,"detach...\n");
217 DEBUG(0, "com20020_detach(0x%p)\n", link);
220 DEBUG(1,"unregister...\n");
222 unregister_netdev(dev);
225 * this is necessary because we register our IRQ separately
226 * from card services.
229 free_irq(dev->irq, dev);
232 if (link->state & DEV_CONFIG)
233 com20020_release(link);
235 /* Unlink device structure, free bits */
236 DEBUG(1,"unlinking...\n");
242 DEBUG(1,"kfree...\n");
245 DEBUG(1,"kfree2...\n");
248 DEBUG(1,"kfree3...\n");
251 } /* com20020_detach */
253 /*======================================================================
255 com20020_config() is scheduled to run after a CARD_INSERTION event
256 is received, to configure the PCMCIA socket, and to make the
257 device available to the system.
259 ======================================================================*/
261 #define CS_CHECK(fn, ret) \
262 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
264 static void com20020_config(dev_link_t *link)
266 struct arcnet_local *lp;
267 client_handle_t handle;
270 com20020_dev_t *info;
271 struct net_device *dev;
272 int i, last_ret, last_fn;
276 handle = link->handle;
280 DEBUG(1,"config...\n");
282 DEBUG(0, "com20020_config(0x%p)\n", link);
284 tuple.Attributes = 0;
285 tuple.TupleData = buf;
286 tuple.TupleDataMax = 64;
287 tuple.TupleOffset = 0;
288 tuple.DesiredTuple = CISTPL_CONFIG;
289 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
290 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
291 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
292 link->conf.ConfigBase = parse.config.base;
295 link->state |= DEV_CONFIG;
297 DEBUG(1,"arcnet: baseport1 is %Xh\n", link->io.BasePort1);
299 if (!link->io.BasePort1)
301 for (ioaddr = 0x100; ioaddr < 0x400; ioaddr += 0x10)
303 link->io.BasePort1 = ioaddr;
304 i = pcmcia_request_io(link->handle, &link->io);
310 i = pcmcia_request_io(link->handle, &link->io);
314 DEBUG(1,"arcnet: requestIO failed totally!\n");
318 ioaddr = dev->base_addr = link->io.BasePort1;
319 DEBUG(1,"arcnet: got ioaddr %Xh\n", ioaddr);
321 DEBUG(1,"arcnet: request IRQ %d (%Xh/%Xh)\n",
322 link->irq.AssignedIRQ,
323 link->irq.IRQInfo1, link->irq.IRQInfo2);
324 i = pcmcia_request_irq(link->handle, &link->irq);
327 DEBUG(1,"arcnet: requestIRQ failed totally!\n");
331 dev->irq = link->irq.AssignedIRQ;
333 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));
335 if (com20020_check(dev))
342 lp->card_name = "PCMCIA COM20020";
343 lp->card_flags = ARC_CAN_10MBIT; /* pretend all of them can 10Mbit */
345 link->dev = &info->node;
346 link->state &= ~DEV_CONFIG_PENDING;
347 SET_NETDEV_DEV(dev, &handle_to_dev(handle));
349 i = com20020_found(dev, 0); /* calls register_netdev */
352 DEBUG(1,KERN_NOTICE "com20020_cs: com20020_found() failed\n");
357 strcpy(info->node.dev_name, dev->name);
359 DEBUG(1,KERN_INFO "%s: port %#3lx, irq %d\n",
360 dev->name, dev->base_addr, dev->irq);
364 cs_error(link->handle, last_fn, last_ret);
366 DEBUG(1,"com20020_config failed...\n");
367 com20020_release(link);
368 } /* com20020_config */
370 /*======================================================================
372 After a card is removed, com20020_release() will unregister the net
373 device, and release the PCMCIA configuration. If the device is
374 still open, this will be postponed until it is closed.
376 ======================================================================*/
378 static void com20020_release(dev_link_t *link)
381 DEBUG(1,"release...\n");
383 DEBUG(0, "com20020_release(0x%p)\n", link);
385 pcmcia_release_configuration(link->handle);
386 pcmcia_release_io(link->handle, &link->io);
387 pcmcia_release_irq(link->handle, &link->irq);
389 link->state &= ~(DEV_CONFIG | DEV_RELEASE_PENDING);
392 static int com20020_suspend(struct pcmcia_device *p_dev)
394 dev_link_t *link = dev_to_instance(p_dev);
395 com20020_dev_t *info = link->priv;
396 struct net_device *dev = info->dev;
398 link->state |= DEV_SUSPEND;
399 if (link->state & DEV_CONFIG) {
401 netif_device_detach(dev);
403 pcmcia_release_configuration(link->handle);
409 static int com20020_resume(struct pcmcia_device *p_dev)
411 dev_link_t *link = dev_to_instance(p_dev);
412 com20020_dev_t *info = link->priv;
413 struct net_device *dev = info->dev;
415 link->state &= ~DEV_SUSPEND;
416 if (link->state & DEV_CONFIG) {
417 pcmcia_request_configuration(link->handle, &link->conf);
419 int ioaddr = dev->base_addr;
420 struct arcnet_local *lp = dev->priv;
428 static struct pcmcia_device_id com20020_ids[] = {
429 PCMCIA_DEVICE_PROD_ID12("Contemporary Control Systems, Inc.", "PCM20 Arcnet Adapter", 0x59991666, 0x95dfffaf),
432 MODULE_DEVICE_TABLE(pcmcia, com20020_ids);
434 static struct pcmcia_driver com20020_cs_driver = {
435 .owner = THIS_MODULE,
437 .name = "com20020_cs",
439 .probe = com20020_attach,
440 .remove = com20020_detach,
441 .id_table = com20020_ids,
442 .suspend = com20020_suspend,
443 .resume = com20020_resume,
446 static int __init init_com20020_cs(void)
448 return pcmcia_register_driver(&com20020_cs_driver);
451 static void __exit exit_com20020_cs(void)
453 pcmcia_unregister_driver(&com20020_cs_driver);
456 module_init(init_com20020_cs);
457 module_exit(exit_com20020_cs);