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);
123 static int com20020_event(event_t event, int priority,
124 event_callback_args_t *args);
126 static dev_info_t dev_info = "com20020_cs";
128 static dev_link_t *com20020_attach(void);
129 static void com20020_detach(struct pcmcia_device *p_dev);
131 static dev_link_t *dev_list;
133 /*====================================================================*/
135 typedef struct com20020_dev_t {
136 struct net_device *dev;
140 /*======================================================================
142 com20020_attach() creates an "instance" of the driver, allocating
143 local data structures for one device. The device is registered
146 ======================================================================*/
148 static dev_link_t *com20020_attach(void)
150 client_reg_t client_reg;
152 com20020_dev_t *info;
153 struct net_device *dev;
155 struct arcnet_local *lp;
157 DEBUG(0, "com20020_attach()\n");
159 /* Create new network device */
160 link = kmalloc(sizeof(struct dev_link_t), GFP_KERNEL);
164 info = kmalloc(sizeof(struct com20020_dev_t), GFP_KERNEL);
166 goto fail_alloc_info;
168 dev = alloc_arcdev("");
172 memset(info, 0, sizeof(struct com20020_dev_t));
173 memset(link, 0, sizeof(struct dev_link_t));
175 lp->timeout = timeout;
176 lp->backplane = backplane;
178 lp->clockm = clockm & 3;
179 lp->hw.owner = THIS_MODULE;
181 /* fill in our module parameters as defaults */
182 dev->dev_addr[0] = node;
184 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
185 link->io.NumPorts1 = 16;
186 link->io.IOAddrLines = 16;
187 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
188 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
189 link->conf.Attributes = CONF_ENABLE_IRQ;
191 link->conf.IntType = INT_MEMORY_AND_IO;
192 link->conf.Present = PRESENT_OPTION;
195 link->irq.Instance = info->dev = dev;
198 /* Register with Card Services */
199 link->next = dev_list;
201 client_reg.dev_info = &dev_info;
202 client_reg.Version = 0x0210;
203 client_reg.event_callback_args.client_data = link;
204 ret = pcmcia_register_client(&link->handle, &client_reg);
206 cs_error(link->handle, RegisterClient, ret);
207 com20020_detach(link->handle);
218 } /* com20020_attach */
220 /*======================================================================
222 This deletes a driver "instance". The device is de-registered
223 with Card Services. If it has been released, all local data
224 structures are freed. Otherwise, the structures will be freed
225 when the device is released.
227 ======================================================================*/
229 static void com20020_detach(struct pcmcia_device *p_dev)
231 dev_link_t *link = dev_to_instance(p_dev);
232 struct com20020_dev_t *info = link->priv;
234 struct net_device *dev;
236 DEBUG(1,"detach...\n");
238 DEBUG(0, "com20020_detach(0x%p)\n", link);
240 /* Locate device structure */
241 for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
242 if (*linkp == link) break;
249 DEBUG(1,"unregister...\n");
251 unregister_netdev(dev);
254 * this is necessary because we register our IRQ separately
255 * from card services.
258 free_irq(dev->irq, dev);
261 if (link->state & DEV_CONFIG)
262 com20020_release(link);
264 /* Unlink device structure, free bits */
265 DEBUG(1,"unlinking...\n");
272 DEBUG(1,"kfree...\n");
275 DEBUG(1,"kfree2...\n");
278 DEBUG(1,"kfree3...\n");
281 } /* com20020_detach */
283 /*======================================================================
285 com20020_config() is scheduled to run after a CARD_INSERTION event
286 is received, to configure the PCMCIA socket, and to make the
287 device available to the system.
289 ======================================================================*/
291 #define CS_CHECK(fn, ret) \
292 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
294 static void com20020_config(dev_link_t *link)
296 struct arcnet_local *lp;
297 client_handle_t handle;
300 com20020_dev_t *info;
301 struct net_device *dev;
302 int i, last_ret, last_fn;
306 handle = link->handle;
310 DEBUG(1,"config...\n");
312 DEBUG(0, "com20020_config(0x%p)\n", link);
314 tuple.Attributes = 0;
315 tuple.TupleData = buf;
316 tuple.TupleDataMax = 64;
317 tuple.TupleOffset = 0;
318 tuple.DesiredTuple = CISTPL_CONFIG;
319 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
320 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
321 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
322 link->conf.ConfigBase = parse.config.base;
325 link->state |= DEV_CONFIG;
327 DEBUG(1,"arcnet: baseport1 is %Xh\n", link->io.BasePort1);
329 if (!link->io.BasePort1)
331 for (ioaddr = 0x100; ioaddr < 0x400; ioaddr += 0x10)
333 link->io.BasePort1 = ioaddr;
334 i = pcmcia_request_io(link->handle, &link->io);
340 i = pcmcia_request_io(link->handle, &link->io);
344 DEBUG(1,"arcnet: requestIO failed totally!\n");
348 ioaddr = dev->base_addr = link->io.BasePort1;
349 DEBUG(1,"arcnet: got ioaddr %Xh\n", ioaddr);
351 DEBUG(1,"arcnet: request IRQ %d (%Xh/%Xh)\n",
352 link->irq.AssignedIRQ,
353 link->irq.IRQInfo1, link->irq.IRQInfo2);
354 i = pcmcia_request_irq(link->handle, &link->irq);
357 DEBUG(1,"arcnet: requestIRQ failed totally!\n");
361 dev->irq = link->irq.AssignedIRQ;
363 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));
365 if (com20020_check(dev))
372 lp->card_name = "PCMCIA COM20020";
373 lp->card_flags = ARC_CAN_10MBIT; /* pretend all of them can 10Mbit */
375 link->dev = &info->node;
376 link->state &= ~DEV_CONFIG_PENDING;
377 SET_NETDEV_DEV(dev, &handle_to_dev(handle));
379 i = com20020_found(dev, 0); /* calls register_netdev */
382 DEBUG(1,KERN_NOTICE "com20020_cs: com20020_found() failed\n");
387 strcpy(info->node.dev_name, dev->name);
389 DEBUG(1,KERN_INFO "%s: port %#3lx, irq %d\n",
390 dev->name, dev->base_addr, dev->irq);
394 cs_error(link->handle, last_fn, last_ret);
396 DEBUG(1,"com20020_config failed...\n");
397 com20020_release(link);
398 } /* com20020_config */
400 /*======================================================================
402 After a card is removed, com20020_release() will unregister the net
403 device, and release the PCMCIA configuration. If the device is
404 still open, this will be postponed until it is closed.
406 ======================================================================*/
408 static void com20020_release(dev_link_t *link)
411 DEBUG(1,"release...\n");
413 DEBUG(0, "com20020_release(0x%p)\n", link);
415 pcmcia_release_configuration(link->handle);
416 pcmcia_release_io(link->handle, &link->io);
417 pcmcia_release_irq(link->handle, &link->irq);
419 link->state &= ~(DEV_CONFIG | DEV_RELEASE_PENDING);
422 static int com20020_suspend(struct pcmcia_device *p_dev)
424 dev_link_t *link = dev_to_instance(p_dev);
425 com20020_dev_t *info = link->priv;
426 struct net_device *dev = info->dev;
428 link->state |= DEV_SUSPEND;
429 if (link->state & DEV_CONFIG) {
431 netif_device_detach(dev);
433 pcmcia_release_configuration(link->handle);
439 static int com20020_resume(struct pcmcia_device *p_dev)
441 dev_link_t *link = dev_to_instance(p_dev);
442 com20020_dev_t *info = link->priv;
443 struct net_device *dev = info->dev;
445 link->state &= ~DEV_SUSPEND;
446 if (link->state & DEV_CONFIG) {
447 pcmcia_request_configuration(link->handle, &link->conf);
449 int ioaddr = dev->base_addr;
450 struct arcnet_local *lp = dev->priv;
458 /*======================================================================
460 The card status event handler. Mostly, this schedules other
461 stuff to run after an event is received. A CARD_REMOVAL event
462 also sets some flags to discourage the net drivers from trying
463 to talk to the card any more.
465 ======================================================================*/
467 static int com20020_event(event_t event, int priority,
468 event_callback_args_t *args)
470 dev_link_t *link = args->client_data;
472 DEBUG(1, "com20020_event(0x%06x)\n", event);
475 case CS_EVENT_CARD_INSERTION:
476 link->state |= DEV_PRESENT;
477 com20020_config(link);
481 } /* com20020_event */
483 static struct pcmcia_device_id com20020_ids[] = {
484 PCMCIA_DEVICE_PROD_ID12("Contemporary Control Systems, Inc.", "PCM20 Arcnet Adapter", 0x59991666, 0x95dfffaf),
487 MODULE_DEVICE_TABLE(pcmcia, com20020_ids);
489 static struct pcmcia_driver com20020_cs_driver = {
490 .owner = THIS_MODULE,
492 .name = "com20020_cs",
494 .attach = com20020_attach,
495 .event = com20020_event,
496 .remove = com20020_detach,
497 .id_table = com20020_ids,
498 .suspend = com20020_suspend,
499 .resume = com20020_resume,
502 static int __init init_com20020_cs(void)
504 return pcmcia_register_driver(&com20020_cs_driver);
507 static void __exit exit_com20020_cs(void)
509 pcmcia_unregister_driver(&com20020_cs_driver);
510 BUG_ON(dev_list != NULL);
513 module_init(init_com20020_cs);
514 module_exit(exit_com20020_cs);