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 int 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_probe(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 return teles_cs_config(link);
171 /*======================================================================
173 This deletes a driver "instance". The device is de-registered
174 with Card Services. If it has been released, all local data
175 structures are freed. Otherwise, the structures will be freed
176 when the device is released.
178 ======================================================================*/
180 static void teles_detach(struct pcmcia_device *link)
182 local_info_t *info = link->priv;
184 DEBUG(0, "teles_detach(0x%p)\n", link);
186 if (link->state & DEV_CONFIG) {
188 teles_cs_release(link);
195 /*======================================================================
197 teles_cs_config() is scheduled to run after a CARD_INSERTION event
198 is received, to configure the PCMCIA socket, and to make the
199 device available to the system.
201 ======================================================================*/
202 static int get_tuple(struct pcmcia_device *handle, tuple_t *tuple,
205 int i = pcmcia_get_tuple_data(handle, tuple);
206 if (i != CS_SUCCESS) return i;
207 return pcmcia_parse_tuple(handle, tuple, parse);
210 static int first_tuple(struct pcmcia_device *handle, tuple_t *tuple,
213 int i = pcmcia_get_first_tuple(handle, tuple);
214 if (i != CS_SUCCESS) return i;
215 return get_tuple(handle, tuple, parse);
218 static int next_tuple(struct pcmcia_device *handle, tuple_t *tuple,
221 int i = pcmcia_get_next_tuple(handle, tuple);
222 if (i != CS_SUCCESS) return i;
223 return get_tuple(handle, tuple, parse);
226 static int teles_cs_config(struct pcmcia_device *link)
233 cistpl_cftable_entry_t *cf = &parse.cftable_entry;
236 DEBUG(0, "teles_config(0x%p)\n", link);
240 This reads the card's CONFIG tuple to find its configuration
243 tuple.DesiredTuple = CISTPL_CONFIG;
244 tuple.TupleData = (cisdata_t *)buf;
245 tuple.TupleDataMax = 255;
246 tuple.TupleOffset = 0;
247 tuple.Attributes = 0;
248 i = first_tuple(link, &tuple, &parse);
249 if (i != CS_SUCCESS) {
250 last_fn = ParseTuple;
253 link->conf.ConfigBase = parse.config.base;
254 link->conf.Present = parse.config.rmask[0];
257 link->state |= DEV_CONFIG;
259 tuple.TupleData = (cisdata_t *)buf;
260 tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
261 tuple.Attributes = 0;
262 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
263 i = first_tuple(link, &tuple, &parse);
264 while (i == CS_SUCCESS) {
265 if ( (cf->io.nwin > 0) && cf->io.win[0].base) {
266 printk(KERN_INFO "(teles_cs: looks like the 96 model)\n");
267 link->conf.ConfigIndex = cf->index;
268 link->io.BasePort1 = cf->io.win[0].base;
269 i = pcmcia_request_io(link, &link->io);
270 if (i == CS_SUCCESS) break;
272 printk(KERN_INFO "(teles_cs: looks like the 97 model)\n");
273 link->conf.ConfigIndex = cf->index;
274 for (i = 0, j = 0x2f0; j > 0x100; j -= 0x10) {
275 link->io.BasePort1 = j;
276 i = pcmcia_request_io(link, &link->io);
277 if (i == CS_SUCCESS) break;
281 i = next_tuple(link, &tuple, &parse);
284 if (i != CS_SUCCESS) {
289 i = pcmcia_request_irq(link, &link->irq);
290 if (i != CS_SUCCESS) {
291 link->irq.AssignedIRQ = 0;
292 last_fn = RequestIRQ;
296 i = pcmcia_request_configuration(link, &link->conf);
297 if (i != CS_SUCCESS) {
298 last_fn = RequestConfiguration;
302 /* At this point, the dev_node_t structure(s) should be
303 initialized and arranged in a linked list at link->dev. *//* */
304 sprintf(dev->node.dev_name, "teles");
305 dev->node.major = dev->node.minor = 0x0;
307 link->dev_node = &dev->node;
309 /* Finally, report what we've done */
310 printk(KERN_INFO "%s: index 0x%02x:",
311 dev->node.dev_name, link->conf.ConfigIndex);
312 if (link->conf.Attributes & CONF_ENABLE_IRQ)
313 printk(", irq %d", link->irq.AssignedIRQ);
314 if (link->io.NumPorts1)
315 printk(", io 0x%04x-0x%04x", link->io.BasePort1,
316 link->io.BasePort1+link->io.NumPorts1-1);
317 if (link->io.NumPorts2)
318 printk(" & 0x%04x-0x%04x", link->io.BasePort2,
319 link->io.BasePort2+link->io.NumPorts2-1);
322 link->state &= ~DEV_CONFIG_PENDING;
324 icard.para[0] = link->irq.AssignedIRQ;
325 icard.para[1] = link->io.BasePort1;
326 icard.protocol = protocol;
327 icard.typ = ISDN_CTYPE_TELESPCMCIA;
329 i = hisax_init_pcmcia(link, &(((local_info_t*)link->priv)->busy), &icard);
331 printk(KERN_ERR "teles_cs: failed to initialize Teles PCMCIA %d at i/o %#x\n",
332 i, link->io.BasePort1);
333 teles_cs_release(link);
337 ((local_info_t*)link->priv)->cardnr = i;
341 cs_error(link, last_fn, i);
342 teles_cs_release(link);
344 } /* teles_cs_config */
346 /*======================================================================
348 After a card is removed, teles_cs_release() will unregister the net
349 device, and release the PCMCIA configuration. If the device is
350 still open, this will be postponed until it is closed.
352 ======================================================================*/
354 static void teles_cs_release(struct pcmcia_device *link)
356 local_info_t *local = link->priv;
358 DEBUG(0, "teles_cs_release(0x%p)\n", link);
361 if (local->cardnr >= 0) {
362 /* no unregister function with hisax */
363 HiSax_closecard(local->cardnr);
367 pcmcia_disable_device(link);
368 } /* teles_cs_release */
370 static int teles_suspend(struct pcmcia_device *link)
372 local_info_t *dev = link->priv;
379 static int teles_resume(struct pcmcia_device *link)
381 local_info_t *dev = link->priv;
389 static struct pcmcia_device_id teles_ids[] = {
390 PCMCIA_DEVICE_PROD_ID12("TELES", "S0/PC", 0x67b50eae, 0xe9e70119),
393 MODULE_DEVICE_TABLE(pcmcia, teles_ids);
395 static struct pcmcia_driver teles_cs_driver = {
396 .owner = THIS_MODULE,
400 .probe = teles_probe,
401 .remove = teles_detach,
402 .id_table = teles_ids,
403 .suspend = teles_suspend,
404 .resume = teles_resume,
407 static int __init init_teles_cs(void)
409 return pcmcia_register_driver(&teles_cs_driver);
412 static void __exit exit_teles_cs(void)
414 pcmcia_unregister_driver(&teles_cs_driver);
417 module_init(init_teles_cs);
418 module_exit(exit_teles_cs);