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;
176 p_dev->conf.Present = PRESENT_OPTION;
178 p_dev->irq.Instance = info->dev = dev;
181 return com20020_config(p_dev);
187 } /* com20020_attach */
189 /*======================================================================
191 This deletes a driver "instance". The device is de-registered
192 with Card Services. If it has been released, all local data
193 structures are freed. Otherwise, the structures will be freed
194 when the device is released.
196 ======================================================================*/
198 static void com20020_detach(struct pcmcia_device *link)
200 struct com20020_dev_t *info = link->priv;
201 struct net_device *dev = info->dev;
203 DEBUG(1,"detach...\n");
205 DEBUG(0, "com20020_detach(0x%p)\n", link);
207 if (link->dev_node) {
208 DEBUG(1,"unregister...\n");
210 unregister_netdev(dev);
213 * this is necessary because we register our IRQ separately
214 * from card services.
217 free_irq(dev->irq, dev);
220 com20020_release(link);
222 /* Unlink device structure, free bits */
223 DEBUG(1,"unlinking...\n");
229 DEBUG(1,"kfree...\n");
232 DEBUG(1,"kfree2...\n");
236 } /* com20020_detach */
238 /*======================================================================
240 com20020_config() is scheduled to run after a CARD_INSERTION event
241 is received, to configure the PCMCIA socket, and to make the
242 device available to the system.
244 ======================================================================*/
246 #define CS_CHECK(fn, ret) \
247 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
249 static int com20020_config(struct pcmcia_device *link)
251 struct arcnet_local *lp;
252 com20020_dev_t *info;
253 struct net_device *dev;
254 int i, last_ret, last_fn;
260 DEBUG(1,"config...\n");
262 DEBUG(0, "com20020_config(0x%p)\n", link);
264 DEBUG(1,"arcnet: baseport1 is %Xh\n", link->io.BasePort1);
266 if (!link->io.BasePort1)
268 for (ioaddr = 0x100; ioaddr < 0x400; ioaddr += 0x10)
270 link->io.BasePort1 = ioaddr;
271 i = pcmcia_request_io(link, &link->io);
277 i = pcmcia_request_io(link, &link->io);
281 DEBUG(1,"arcnet: requestIO failed totally!\n");
285 ioaddr = dev->base_addr = link->io.BasePort1;
286 DEBUG(1,"arcnet: got ioaddr %Xh\n", ioaddr);
288 DEBUG(1,"arcnet: request IRQ %d (%Xh/%Xh)\n",
289 link->irq.AssignedIRQ,
290 link->irq.IRQInfo1, link->irq.IRQInfo2);
291 i = pcmcia_request_irq(link, &link->irq);
294 DEBUG(1,"arcnet: requestIRQ failed totally!\n");
298 dev->irq = link->irq.AssignedIRQ;
300 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
302 if (com20020_check(dev))
309 lp->card_name = "PCMCIA COM20020";
310 lp->card_flags = ARC_CAN_10MBIT; /* pretend all of them can 10Mbit */
312 link->dev_node = &info->node;
313 SET_NETDEV_DEV(dev, &handle_to_dev(link));
315 i = com20020_found(dev, 0); /* calls register_netdev */
318 DEBUG(1,KERN_NOTICE "com20020_cs: com20020_found() failed\n");
319 link->dev_node = NULL;
323 strcpy(info->node.dev_name, dev->name);
325 DEBUG(1,KERN_INFO "%s: port %#3lx, irq %d\n",
326 dev->name, dev->base_addr, dev->irq);
330 cs_error(link, last_fn, last_ret);
332 DEBUG(1,"com20020_config failed...\n");
333 com20020_release(link);
335 } /* com20020_config */
337 /*======================================================================
339 After a card is removed, com20020_release() will unregister the net
340 device, and release the PCMCIA configuration. If the device is
341 still open, this will be postponed until it is closed.
343 ======================================================================*/
345 static void com20020_release(struct pcmcia_device *link)
347 DEBUG(0, "com20020_release(0x%p)\n", link);
348 pcmcia_disable_device(link);
351 static int com20020_suspend(struct pcmcia_device *link)
353 com20020_dev_t *info = link->priv;
354 struct net_device *dev = info->dev;
357 netif_device_detach(dev);
362 static int com20020_resume(struct pcmcia_device *link)
364 com20020_dev_t *info = link->priv;
365 struct net_device *dev = info->dev;
368 int ioaddr = dev->base_addr;
369 struct arcnet_local *lp = dev->priv;
376 static struct pcmcia_device_id com20020_ids[] = {
377 PCMCIA_DEVICE_PROD_ID12("Contemporary Control Systems, Inc.",
378 "PCM20 Arcnet Adapter", 0x59991666, 0x95dfffaf),
379 PCMCIA_DEVICE_PROD_ID12("SoHard AG",
380 "SH ARC PCMCIA", 0xf8991729, 0x69dff0c7),
383 MODULE_DEVICE_TABLE(pcmcia, com20020_ids);
385 static struct pcmcia_driver com20020_cs_driver = {
386 .owner = THIS_MODULE,
388 .name = "com20020_cs",
390 .probe = com20020_probe,
391 .remove = com20020_detach,
392 .id_table = com20020_ids,
393 .suspend = com20020_suspend,
394 .resume = com20020_resume,
397 static int __init init_com20020_cs(void)
399 return pcmcia_register_driver(&com20020_cs_driver);
402 static void __exit exit_com20020_cs(void)
404 pcmcia_unregister_driver(&com20020_cs_driver);
407 module_init(init_com20020_cs);
408 module_exit(exit_com20020_cs);