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;
181 link->conf.IntType = INT_MEMORY_AND_IO;
182 link->conf.Present = PRESENT_OPTION;
184 link->irq.Instance = info->dev = dev;
187 link->state |= DEV_PRESENT;
188 com20020_config(link);
197 } /* com20020_attach */
199 /*======================================================================
201 This deletes a driver "instance". The device is de-registered
202 with Card Services. If it has been released, all local data
203 structures are freed. Otherwise, the structures will be freed
204 when the device is released.
206 ======================================================================*/
208 static void com20020_detach(struct pcmcia_device *p_dev)
210 dev_link_t *link = dev_to_instance(p_dev);
211 struct com20020_dev_t *info = link->priv;
212 struct net_device *dev = info->dev;
214 DEBUG(1,"detach...\n");
216 DEBUG(0, "com20020_detach(0x%p)\n", link);
219 DEBUG(1,"unregister...\n");
221 unregister_netdev(dev);
224 * this is necessary because we register our IRQ separately
225 * from card services.
228 free_irq(dev->irq, dev);
231 if (link->state & DEV_CONFIG)
232 com20020_release(link);
234 /* Unlink device structure, free bits */
235 DEBUG(1,"unlinking...\n");
241 DEBUG(1,"kfree...\n");
244 DEBUG(1,"kfree2...\n");
247 DEBUG(1,"kfree3...\n");
250 } /* com20020_detach */
252 /*======================================================================
254 com20020_config() is scheduled to run after a CARD_INSERTION event
255 is received, to configure the PCMCIA socket, and to make the
256 device available to the system.
258 ======================================================================*/
260 #define CS_CHECK(fn, ret) \
261 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
263 static void com20020_config(dev_link_t *link)
265 struct arcnet_local *lp;
266 client_handle_t handle;
269 com20020_dev_t *info;
270 struct net_device *dev;
271 int i, last_ret, last_fn;
275 handle = link->handle;
279 DEBUG(1,"config...\n");
281 DEBUG(0, "com20020_config(0x%p)\n", link);
283 tuple.Attributes = 0;
284 tuple.TupleData = buf;
285 tuple.TupleDataMax = 64;
286 tuple.TupleOffset = 0;
287 tuple.DesiredTuple = CISTPL_CONFIG;
288 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
289 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
290 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
291 link->conf.ConfigBase = parse.config.base;
294 link->state |= DEV_CONFIG;
296 DEBUG(1,"arcnet: baseport1 is %Xh\n", link->io.BasePort1);
298 if (!link->io.BasePort1)
300 for (ioaddr = 0x100; ioaddr < 0x400; ioaddr += 0x10)
302 link->io.BasePort1 = ioaddr;
303 i = pcmcia_request_io(link->handle, &link->io);
309 i = pcmcia_request_io(link->handle, &link->io);
313 DEBUG(1,"arcnet: requestIO failed totally!\n");
317 ioaddr = dev->base_addr = link->io.BasePort1;
318 DEBUG(1,"arcnet: got ioaddr %Xh\n", ioaddr);
320 DEBUG(1,"arcnet: request IRQ %d (%Xh/%Xh)\n",
321 link->irq.AssignedIRQ,
322 link->irq.IRQInfo1, link->irq.IRQInfo2);
323 i = pcmcia_request_irq(link->handle, &link->irq);
326 DEBUG(1,"arcnet: requestIRQ failed totally!\n");
330 dev->irq = link->irq.AssignedIRQ;
332 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));
334 if (com20020_check(dev))
341 lp->card_name = "PCMCIA COM20020";
342 lp->card_flags = ARC_CAN_10MBIT; /* pretend all of them can 10Mbit */
344 link->dev = &info->node;
345 link->state &= ~DEV_CONFIG_PENDING;
346 SET_NETDEV_DEV(dev, &handle_to_dev(handle));
348 i = com20020_found(dev, 0); /* calls register_netdev */
351 DEBUG(1,KERN_NOTICE "com20020_cs: com20020_found() failed\n");
356 strcpy(info->node.dev_name, dev->name);
358 DEBUG(1,KERN_INFO "%s: port %#3lx, irq %d\n",
359 dev->name, dev->base_addr, dev->irq);
363 cs_error(link->handle, last_fn, last_ret);
365 DEBUG(1,"com20020_config failed...\n");
366 com20020_release(link);
367 } /* com20020_config */
369 /*======================================================================
371 After a card is removed, com20020_release() will unregister the net
372 device, and release the PCMCIA configuration. If the device is
373 still open, this will be postponed until it is closed.
375 ======================================================================*/
377 static void com20020_release(dev_link_t *link)
379 DEBUG(0, "com20020_release(0x%p)\n", link);
380 pcmcia_disable_device(link->handle);
383 static int com20020_suspend(struct pcmcia_device *p_dev)
385 dev_link_t *link = dev_to_instance(p_dev);
386 com20020_dev_t *info = link->priv;
387 struct net_device *dev = info->dev;
389 if ((link->state & DEV_CONFIG) && (link->open))
390 netif_device_detach(dev);
395 static int com20020_resume(struct pcmcia_device *p_dev)
397 dev_link_t *link = dev_to_instance(p_dev);
398 com20020_dev_t *info = link->priv;
399 struct net_device *dev = info->dev;
401 if ((link->state & DEV_CONFIG) && (link->open)) {
402 int ioaddr = dev->base_addr;
403 struct arcnet_local *lp = dev->priv;
410 static struct pcmcia_device_id com20020_ids[] = {
411 PCMCIA_DEVICE_PROD_ID12("Contemporary Control Systems, Inc.", "PCM20 Arcnet Adapter", 0x59991666, 0x95dfffaf),
414 MODULE_DEVICE_TABLE(pcmcia, com20020_ids);
416 static struct pcmcia_driver com20020_cs_driver = {
417 .owner = THIS_MODULE,
419 .name = "com20020_cs",
421 .probe = com20020_attach,
422 .remove = com20020_detach,
423 .id_table = com20020_ids,
424 .suspend = com20020_suspend,
425 .resume = com20020_resume,
428 static int __init init_com20020_cs(void)
430 return pcmcia_register_driver(&com20020_cs_driver);
433 static void __exit exit_com20020_cs(void)
435 pcmcia_unregister_driver(&com20020_cs_driver);
438 module_init(init_com20020_cs);
439 module_exit(exit_com20020_cs);