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 return teles_cs_config(link);
170 /*======================================================================
172 This deletes a driver "instance". The device is de-registered
173 with Card Services. If it has been released, all local data
174 structures are freed. Otherwise, the structures will be freed
175 when the device is released.
177 ======================================================================*/
179 static void teles_detach(struct pcmcia_device *link)
181 local_info_t *info = link->priv;
183 DEBUG(0, "teles_detach(0x%p)\n", link);
186 teles_cs_release(link);
191 /*======================================================================
193 teles_cs_config() is scheduled to run after a CARD_INSERTION event
194 is received, to configure the PCMCIA socket, and to make the
195 device available to the system.
197 ======================================================================*/
198 static int get_tuple(struct pcmcia_device *handle, tuple_t *tuple,
201 int i = pcmcia_get_tuple_data(handle, tuple);
202 if (i != CS_SUCCESS) return i;
203 return pcmcia_parse_tuple(handle, tuple, parse);
206 static int first_tuple(struct pcmcia_device *handle, tuple_t *tuple,
209 int i = pcmcia_get_first_tuple(handle, tuple);
210 if (i != CS_SUCCESS) return i;
211 return get_tuple(handle, tuple, parse);
214 static int next_tuple(struct pcmcia_device *handle, tuple_t *tuple,
217 int i = pcmcia_get_next_tuple(handle, tuple);
218 if (i != CS_SUCCESS) return i;
219 return get_tuple(handle, tuple, parse);
222 static int teles_cs_config(struct pcmcia_device *link)
229 cistpl_cftable_entry_t *cf = &parse.cftable_entry;
232 DEBUG(0, "teles_config(0x%p)\n", link);
236 This reads the card's CONFIG tuple to find its configuration
239 tuple.DesiredTuple = CISTPL_CONFIG;
240 tuple.TupleData = (cisdata_t *)buf;
241 tuple.TupleDataMax = 255;
242 tuple.TupleOffset = 0;
243 tuple.Attributes = 0;
244 i = first_tuple(link, &tuple, &parse);
245 if (i != CS_SUCCESS) {
246 last_fn = ParseTuple;
249 link->conf.ConfigBase = parse.config.base;
250 link->conf.Present = parse.config.rmask[0];
252 tuple.TupleData = (cisdata_t *)buf;
253 tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
254 tuple.Attributes = 0;
255 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
256 i = first_tuple(link, &tuple, &parse);
257 while (i == CS_SUCCESS) {
258 if ( (cf->io.nwin > 0) && cf->io.win[0].base) {
259 printk(KERN_INFO "(teles_cs: looks like the 96 model)\n");
260 link->conf.ConfigIndex = cf->index;
261 link->io.BasePort1 = cf->io.win[0].base;
262 i = pcmcia_request_io(link, &link->io);
263 if (i == CS_SUCCESS) break;
265 printk(KERN_INFO "(teles_cs: looks like the 97 model)\n");
266 link->conf.ConfigIndex = cf->index;
267 for (i = 0, j = 0x2f0; j > 0x100; j -= 0x10) {
268 link->io.BasePort1 = j;
269 i = pcmcia_request_io(link, &link->io);
270 if (i == CS_SUCCESS) break;
274 i = next_tuple(link, &tuple, &parse);
277 if (i != CS_SUCCESS) {
282 i = pcmcia_request_irq(link, &link->irq);
283 if (i != CS_SUCCESS) {
284 link->irq.AssignedIRQ = 0;
285 last_fn = RequestIRQ;
289 i = pcmcia_request_configuration(link, &link->conf);
290 if (i != CS_SUCCESS) {
291 last_fn = RequestConfiguration;
295 /* At this point, the dev_node_t structure(s) should be
296 initialized and arranged in a linked list at link->dev. *//* */
297 sprintf(dev->node.dev_name, "teles");
298 dev->node.major = dev->node.minor = 0x0;
300 link->dev_node = &dev->node;
302 /* Finally, report what we've done */
303 printk(KERN_INFO "%s: index 0x%02x:",
304 dev->node.dev_name, link->conf.ConfigIndex);
305 if (link->conf.Attributes & CONF_ENABLE_IRQ)
306 printk(", irq %d", link->irq.AssignedIRQ);
307 if (link->io.NumPorts1)
308 printk(", io 0x%04x-0x%04x", link->io.BasePort1,
309 link->io.BasePort1+link->io.NumPorts1-1);
310 if (link->io.NumPorts2)
311 printk(" & 0x%04x-0x%04x", link->io.BasePort2,
312 link->io.BasePort2+link->io.NumPorts2-1);
315 icard.para[0] = link->irq.AssignedIRQ;
316 icard.para[1] = link->io.BasePort1;
317 icard.protocol = protocol;
318 icard.typ = ISDN_CTYPE_TELESPCMCIA;
320 i = hisax_init_pcmcia(link, &(((local_info_t*)link->priv)->busy), &icard);
322 printk(KERN_ERR "teles_cs: failed to initialize Teles PCMCIA %d at i/o %#x\n",
323 i, link->io.BasePort1);
324 teles_cs_release(link);
328 ((local_info_t*)link->priv)->cardnr = i;
332 cs_error(link, last_fn, i);
333 teles_cs_release(link);
335 } /* teles_cs_config */
337 /*======================================================================
339 After a card is removed, teles_cs_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 teles_cs_release(struct pcmcia_device *link)
347 local_info_t *local = link->priv;
349 DEBUG(0, "teles_cs_release(0x%p)\n", link);
352 if (local->cardnr >= 0) {
353 /* no unregister function with hisax */
354 HiSax_closecard(local->cardnr);
358 pcmcia_disable_device(link);
359 } /* teles_cs_release */
361 static int teles_suspend(struct pcmcia_device *link)
363 local_info_t *dev = link->priv;
370 static int teles_resume(struct pcmcia_device *link)
372 local_info_t *dev = link->priv;
380 static struct pcmcia_device_id teles_ids[] = {
381 PCMCIA_DEVICE_PROD_ID12("TELES", "S0/PC", 0x67b50eae, 0xe9e70119),
384 MODULE_DEVICE_TABLE(pcmcia, teles_ids);
386 static struct pcmcia_driver teles_cs_driver = {
387 .owner = THIS_MODULE,
391 .probe = teles_probe,
392 .remove = teles_detach,
393 .id_table = teles_ids,
394 .suspend = teles_suspend,
395 .resume = teles_resume,
398 static int __init init_teles_cs(void)
400 return pcmcia_register_driver(&teles_cs_driver);
403 static void __exit exit_teles_cs(void)
405 pcmcia_unregister_driver(&teles_cs_driver);
408 module_init(init_teles_cs);
409 module_exit(exit_teles_cs);