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 = kzalloc(sizeof(local_info_t), GFP_KERNEL);
141 if (!local) return -ENOMEM;
147 /* Interrupt setup */
148 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
149 link->irq.IRQInfo1 = IRQ_LEVEL_ID|IRQ_SHARE_ID;
150 link->irq.Handler = NULL;
153 General socket configuration defaults can go here. In this
154 client, we assume very little, and rely on the CIS for almost
155 everything. In most clients, many details (i.e., number, sizes,
156 and attributes of IO windows) are fixed by the nature of the
157 device, and can be hard-wired here.
159 link->io.NumPorts1 = 96;
160 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
161 link->io.IOAddrLines = 5;
163 link->conf.Attributes = CONF_ENABLE_IRQ;
164 link->conf.IntType = INT_MEMORY_AND_IO;
166 return teles_cs_config(link);
169 /*======================================================================
171 This deletes a driver "instance". The device is de-registered
172 with Card Services. If it has been released, all local data
173 structures are freed. Otherwise, the structures will be freed
174 when the device is released.
176 ======================================================================*/
178 static void teles_detach(struct pcmcia_device *link)
180 local_info_t *info = link->priv;
182 DEBUG(0, "teles_detach(0x%p)\n", link);
185 teles_cs_release(link);
190 /*======================================================================
192 teles_cs_config() is scheduled to run after a CARD_INSERTION event
193 is received, to configure the PCMCIA socket, and to make the
194 device available to the system.
196 ======================================================================*/
197 static int get_tuple(struct pcmcia_device *handle, tuple_t *tuple,
200 int i = pcmcia_get_tuple_data(handle, tuple);
201 if (i != CS_SUCCESS) return i;
202 return pcmcia_parse_tuple(handle, tuple, parse);
205 static int first_tuple(struct pcmcia_device *handle, tuple_t *tuple,
208 int i = pcmcia_get_first_tuple(handle, tuple);
209 if (i != CS_SUCCESS) return i;
210 return get_tuple(handle, tuple, parse);
213 static int next_tuple(struct pcmcia_device *handle, tuple_t *tuple,
216 int i = pcmcia_get_next_tuple(handle, tuple);
217 if (i != CS_SUCCESS) return i;
218 return get_tuple(handle, tuple, parse);
221 static int teles_cs_config(struct pcmcia_device *link)
228 cistpl_cftable_entry_t *cf = &parse.cftable_entry;
231 DEBUG(0, "teles_config(0x%p)\n", link);
234 tuple.TupleData = (cisdata_t *)buf;
235 tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
236 tuple.Attributes = 0;
237 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
238 i = first_tuple(link, &tuple, &parse);
239 while (i == CS_SUCCESS) {
240 if ( (cf->io.nwin > 0) && cf->io.win[0].base) {
241 printk(KERN_INFO "(teles_cs: looks like the 96 model)\n");
242 link->conf.ConfigIndex = cf->index;
243 link->io.BasePort1 = cf->io.win[0].base;
244 i = pcmcia_request_io(link, &link->io);
245 if (i == CS_SUCCESS) break;
247 printk(KERN_INFO "(teles_cs: looks like the 97 model)\n");
248 link->conf.ConfigIndex = cf->index;
249 for (i = 0, j = 0x2f0; j > 0x100; j -= 0x10) {
250 link->io.BasePort1 = j;
251 i = pcmcia_request_io(link, &link->io);
252 if (i == CS_SUCCESS) break;
256 i = next_tuple(link, &tuple, &parse);
259 if (i != CS_SUCCESS) {
264 i = pcmcia_request_irq(link, &link->irq);
265 if (i != CS_SUCCESS) {
266 link->irq.AssignedIRQ = 0;
267 last_fn = RequestIRQ;
271 i = pcmcia_request_configuration(link, &link->conf);
272 if (i != CS_SUCCESS) {
273 last_fn = RequestConfiguration;
277 /* At this point, the dev_node_t structure(s) should be
278 initialized and arranged in a linked list at link->dev. *//* */
279 sprintf(dev->node.dev_name, "teles");
280 dev->node.major = dev->node.minor = 0x0;
282 link->dev_node = &dev->node;
284 /* Finally, report what we've done */
285 printk(KERN_INFO "%s: index 0x%02x:",
286 dev->node.dev_name, link->conf.ConfigIndex);
287 if (link->conf.Attributes & CONF_ENABLE_IRQ)
288 printk(", irq %d", link->irq.AssignedIRQ);
289 if (link->io.NumPorts1)
290 printk(", io 0x%04x-0x%04x", link->io.BasePort1,
291 link->io.BasePort1+link->io.NumPorts1-1);
292 if (link->io.NumPorts2)
293 printk(" & 0x%04x-0x%04x", link->io.BasePort2,
294 link->io.BasePort2+link->io.NumPorts2-1);
297 icard.para[0] = link->irq.AssignedIRQ;
298 icard.para[1] = link->io.BasePort1;
299 icard.protocol = protocol;
300 icard.typ = ISDN_CTYPE_TELESPCMCIA;
302 i = hisax_init_pcmcia(link, &(((local_info_t*)link->priv)->busy), &icard);
304 printk(KERN_ERR "teles_cs: failed to initialize Teles PCMCIA %d at i/o %#x\n",
305 i, link->io.BasePort1);
306 teles_cs_release(link);
310 ((local_info_t*)link->priv)->cardnr = i;
314 cs_error(link, last_fn, i);
315 teles_cs_release(link);
317 } /* teles_cs_config */
319 /*======================================================================
321 After a card is removed, teles_cs_release() will unregister the net
322 device, and release the PCMCIA configuration. If the device is
323 still open, this will be postponed until it is closed.
325 ======================================================================*/
327 static void teles_cs_release(struct pcmcia_device *link)
329 local_info_t *local = link->priv;
331 DEBUG(0, "teles_cs_release(0x%p)\n", link);
334 if (local->cardnr >= 0) {
335 /* no unregister function with hisax */
336 HiSax_closecard(local->cardnr);
340 pcmcia_disable_device(link);
341 } /* teles_cs_release */
343 static int teles_suspend(struct pcmcia_device *link)
345 local_info_t *dev = link->priv;
352 static int teles_resume(struct pcmcia_device *link)
354 local_info_t *dev = link->priv;
362 static struct pcmcia_device_id teles_ids[] = {
363 PCMCIA_DEVICE_PROD_ID12("TELES", "S0/PC", 0x67b50eae, 0xe9e70119),
366 MODULE_DEVICE_TABLE(pcmcia, teles_ids);
368 static struct pcmcia_driver teles_cs_driver = {
369 .owner = THIS_MODULE,
373 .probe = teles_probe,
374 .remove = teles_detach,
375 .id_table = teles_ids,
376 .suspend = teles_suspend,
377 .resume = teles_resume,
380 static int __init init_teles_cs(void)
382 return pcmcia_register_driver(&teles_cs_driver);
385 static void __exit exit_teles_cs(void)
387 pcmcia_unregister_driver(&teles_cs_driver);
390 module_init(init_teles_cs);
391 module_exit(exit_teles_cs);