1 /* $Id: teles_cs.c,v 1.1.2.2 2004/01/25 15:07:06 keil Exp $ */
2 /*======================================================================
4 A teles S0 PCMCIA client driver
6 Based on skeleton by David Hinds, dhinds@allegro.stanford.edu
7 Written by Christof Petig, christof.petig@wtal.de
9 Also inspired by ELSA PCMCIA driver
10 by Klaus Lichtenwalder <Lichtenwalder@ACM.org>
12 Extentions to new hisax_pcmcia by Karsten Keil
14 minor changes to be compatible with kernel 2.4.x
15 by Jan.Schubert@GMX.li
17 ======================================================================*/
19 #include <linux/kernel.h>
20 #include <linux/module.h>
21 #include <linux/init.h>
22 #include <linux/sched.h>
23 #include <linux/ptrace.h>
24 #include <linux/slab.h>
25 #include <linux/string.h>
26 #include <linux/timer.h>
27 #include <linux/ioport.h>
29 #include <asm/system.h>
31 #include <pcmcia/cs_types.h>
32 #include <pcmcia/cs.h>
33 #include <pcmcia/cistpl.h>
34 #include <pcmcia/cisreg.h>
35 #include <pcmcia/ds.h>
36 #include "hisax_cfg.h"
38 MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for Teles PCMCIA cards");
39 MODULE_AUTHOR("Christof Petig, christof.petig@wtal.de, Karsten Keil, kkeil@suse.de");
40 MODULE_LICENSE("GPL");
43 All the PCMCIA modules use PCMCIA_DEBUG to control debugging. If
44 you do not define PCMCIA_DEBUG at all, all the debug code will be
45 left out. If you compile with PCMCIA_DEBUG=0, the debug code will
46 be present but disabled -- but it can then be enabled for specific
47 modules at load time with a 'pc_debug=#' option to insmod.
51 static int pc_debug = PCMCIA_DEBUG;
52 module_param(pc_debug, int, 0);
53 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args);
54 static char *version =
55 "teles_cs.c 2.10 2002/07/30 22:23:34 kkeil";
57 #define DEBUG(n, args...)
60 /*====================================================================*/
62 /* Parameters that can be set with 'insmod' */
64 static int protocol = 2; /* EURO-ISDN Default */
65 module_param(protocol, int, 0);
67 /*====================================================================*/
70 The event() function is this driver's Card Services event handler.
71 It will be called by Card Services when an appropriate card status
72 event is received. The config() and release() entry points are
73 used to configure or release a socket, in response to card insertion
74 and ejection events. They are invoked from the teles_cs event
78 static void teles_cs_config(struct pcmcia_device *link);
79 static void teles_cs_release(struct pcmcia_device *link);
82 The attach() and detach() entry points are used to create and destroy
83 "instances" of the driver, where each instance represents everything
84 needed to manage one actual PCMCIA card.
87 static void teles_detach(struct pcmcia_device *p_dev);
90 A linked list of "instances" of the teles_cs device. Each actual
91 PCMCIA card corresponds to one device instance, and is described
92 by one struct pcmcia_device structure (defined in ds.h).
94 You may not want to use a linked list for this -- for example, the
95 memory card driver uses an array of struct pcmcia_device pointers, where minor
96 device numbers are used to derive the corresponding array index.
100 A driver needs to provide a dev_node_t structure for each device
101 on a card. In some cases, there is only one device per card (for
102 example, ethernet cards, modems). In other cases, there may be
103 many actual or logical devices (SCSI adapters, memory cards with
104 multiple partitions). The dev_node_t structures need to be kept
105 in a linked list starting at the 'dev' field of a struct pcmcia_device
106 structure. We allocate them in the card's private data structure,
107 because they generally shouldn't be allocated dynamically.
108 In this case, we also provide a flag to indicate if a device is
109 "stopped" due to a power management event, or card ejection. The
110 device IO routines can use a flag like this to throttle IO to a
111 card that is not ready to accept it.
114 typedef struct local_info_t {
115 struct pcmcia_device *p_dev;
121 /*======================================================================
123 teles_attach() creates an "instance" of the driver, allocatingx
124 local data structures for one device. The device is registered
127 The dev_link structure is initialized, but we don't actually
128 configure the card at this point -- we wait until we receive a
129 card insertion event.
131 ======================================================================*/
133 static int teles_attach(struct pcmcia_device *link)
137 DEBUG(0, "teles_attach()\n");
139 /* Allocate space for private device-specific data */
140 local = kmalloc(sizeof(local_info_t), GFP_KERNEL);
141 if (!local) return -ENOMEM;
142 memset(local, 0, sizeof(local_info_t));
148 /* Interrupt setup */
149 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
150 link->irq.IRQInfo1 = IRQ_LEVEL_ID|IRQ_SHARE_ID;
151 link->irq.Handler = NULL;
154 General socket configuration defaults can go here. In this
155 client, we assume very little, and rely on the CIS for almost
156 everything. In most clients, many details (i.e., number, sizes,
157 and attributes of IO windows) are fixed by the nature of the
158 device, and can be hard-wired here.
160 link->io.NumPorts1 = 96;
161 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
162 link->io.IOAddrLines = 5;
164 link->conf.Attributes = CONF_ENABLE_IRQ;
165 link->conf.IntType = INT_MEMORY_AND_IO;
167 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
168 teles_cs_config(link);
173 /*======================================================================
175 This deletes a driver "instance". The device is de-registered
176 with Card Services. If it has been released, all local data
177 structures are freed. Otherwise, the structures will be freed
178 when the device is released.
180 ======================================================================*/
182 static void teles_detach(struct pcmcia_device *link)
184 local_info_t *info = link->priv;
186 DEBUG(0, "teles_detach(0x%p)\n", link);
188 if (link->state & DEV_CONFIG) {
190 teles_cs_release(link);
197 /*======================================================================
199 teles_cs_config() is scheduled to run after a CARD_INSERTION event
200 is received, to configure the PCMCIA socket, and to make the
201 device available to the system.
203 ======================================================================*/
204 static int get_tuple(struct pcmcia_device *handle, tuple_t *tuple,
207 int i = pcmcia_get_tuple_data(handle, tuple);
208 if (i != CS_SUCCESS) return i;
209 return pcmcia_parse_tuple(handle, tuple, parse);
212 static int first_tuple(struct pcmcia_device *handle, tuple_t *tuple,
215 int i = pcmcia_get_first_tuple(handle, tuple);
216 if (i != CS_SUCCESS) return i;
217 return get_tuple(handle, tuple, parse);
220 static int next_tuple(struct pcmcia_device *handle, tuple_t *tuple,
223 int i = pcmcia_get_next_tuple(handle, tuple);
224 if (i != CS_SUCCESS) return i;
225 return get_tuple(handle, tuple, parse);
228 static void teles_cs_config(struct pcmcia_device *link)
235 cistpl_cftable_entry_t *cf = &parse.cftable_entry;
238 DEBUG(0, "teles_config(0x%p)\n", link);
242 This reads the card's CONFIG tuple to find its configuration
245 tuple.DesiredTuple = CISTPL_CONFIG;
246 tuple.TupleData = (cisdata_t *)buf;
247 tuple.TupleDataMax = 255;
248 tuple.TupleOffset = 0;
249 tuple.Attributes = 0;
250 i = first_tuple(link, &tuple, &parse);
251 if (i != CS_SUCCESS) {
252 last_fn = ParseTuple;
255 link->conf.ConfigBase = parse.config.base;
256 link->conf.Present = parse.config.rmask[0];
259 link->state |= DEV_CONFIG;
261 tuple.TupleData = (cisdata_t *)buf;
262 tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
263 tuple.Attributes = 0;
264 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
265 i = first_tuple(link, &tuple, &parse);
266 while (i == CS_SUCCESS) {
267 if ( (cf->io.nwin > 0) && cf->io.win[0].base) {
268 printk(KERN_INFO "(teles_cs: looks like the 96 model)\n");
269 link->conf.ConfigIndex = cf->index;
270 link->io.BasePort1 = cf->io.win[0].base;
271 i = pcmcia_request_io(link, &link->io);
272 if (i == CS_SUCCESS) break;
274 printk(KERN_INFO "(teles_cs: looks like the 97 model)\n");
275 link->conf.ConfigIndex = cf->index;
276 for (i = 0, j = 0x2f0; j > 0x100; j -= 0x10) {
277 link->io.BasePort1 = j;
278 i = pcmcia_request_io(link, &link->io);
279 if (i == CS_SUCCESS) break;
283 i = next_tuple(link, &tuple, &parse);
286 if (i != CS_SUCCESS) {
291 i = pcmcia_request_irq(link, &link->irq);
292 if (i != CS_SUCCESS) {
293 link->irq.AssignedIRQ = 0;
294 last_fn = RequestIRQ;
298 i = pcmcia_request_configuration(link, &link->conf);
299 if (i != CS_SUCCESS) {
300 last_fn = RequestConfiguration;
304 /* At this point, the dev_node_t structure(s) should be
305 initialized and arranged in a linked list at link->dev. *//* */
306 sprintf(dev->node.dev_name, "teles");
307 dev->node.major = dev->node.minor = 0x0;
309 link->dev_node = &dev->node;
311 /* Finally, report what we've done */
312 printk(KERN_INFO "%s: index 0x%02x:",
313 dev->node.dev_name, link->conf.ConfigIndex);
314 if (link->conf.Attributes & CONF_ENABLE_IRQ)
315 printk(", irq %d", link->irq.AssignedIRQ);
316 if (link->io.NumPorts1)
317 printk(", io 0x%04x-0x%04x", link->io.BasePort1,
318 link->io.BasePort1+link->io.NumPorts1-1);
319 if (link->io.NumPorts2)
320 printk(" & 0x%04x-0x%04x", link->io.BasePort2,
321 link->io.BasePort2+link->io.NumPorts2-1);
324 link->state &= ~DEV_CONFIG_PENDING;
326 icard.para[0] = link->irq.AssignedIRQ;
327 icard.para[1] = link->io.BasePort1;
328 icard.protocol = protocol;
329 icard.typ = ISDN_CTYPE_TELESPCMCIA;
331 i = hisax_init_pcmcia(link, &(((local_info_t*)link->priv)->busy), &icard);
333 printk(KERN_ERR "teles_cs: failed to initialize Teles PCMCIA %d at i/o %#x\n",
334 i, link->io.BasePort1);
335 teles_cs_release(link);
337 ((local_info_t*)link->priv)->cardnr = i;
341 cs_error(link, last_fn, i);
342 teles_cs_release(link);
343 } /* teles_cs_config */
345 /*======================================================================
347 After a card is removed, teles_cs_release() will unregister the net
348 device, and release the PCMCIA configuration. If the device is
349 still open, this will be postponed until it is closed.
351 ======================================================================*/
353 static void teles_cs_release(struct pcmcia_device *link)
355 local_info_t *local = link->priv;
357 DEBUG(0, "teles_cs_release(0x%p)\n", link);
360 if (local->cardnr >= 0) {
361 /* no unregister function with hisax */
362 HiSax_closecard(local->cardnr);
366 pcmcia_disable_device(link);
367 } /* teles_cs_release */
369 static int teles_suspend(struct pcmcia_device *link)
371 local_info_t *dev = link->priv;
378 static int teles_resume(struct pcmcia_device *link)
380 local_info_t *dev = link->priv;
388 static struct pcmcia_device_id teles_ids[] = {
389 PCMCIA_DEVICE_PROD_ID12("TELES", "S0/PC", 0x67b50eae, 0xe9e70119),
392 MODULE_DEVICE_TABLE(pcmcia, teles_ids);
394 static struct pcmcia_driver teles_cs_driver = {
395 .owner = THIS_MODULE,
399 .probe = teles_attach,
400 .remove = teles_detach,
401 .id_table = teles_ids,
402 .suspend = teles_suspend,
403 .resume = teles_resume,
406 static int __init init_teles_cs(void)
408 return pcmcia_register_driver(&teles_cs_driver);
411 static void __exit exit_teles_cs(void)
413 pcmcia_unregister_driver(&teles_cs_driver);
416 module_init(init_teles_cs);
417 module_exit(exit_teles_cs);