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/ptrace.h>
23 #include <linux/slab.h>
24 #include <linux/string.h>
25 #include <linux/timer.h>
26 #include <linux/ioport.h>
28 #include <asm/system.h>
30 #include <pcmcia/cs.h>
31 #include <pcmcia/cistpl.h>
32 #include <pcmcia/cisreg.h>
33 #include <pcmcia/ds.h>
34 #include "hisax_cfg.h"
36 MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for Teles PCMCIA cards");
37 MODULE_AUTHOR("Christof Petig, christof.petig@wtal.de, Karsten Keil, kkeil@suse.de");
38 MODULE_LICENSE("GPL");
41 /*====================================================================*/
43 /* Parameters that can be set with 'insmod' */
45 static int protocol = 2; /* EURO-ISDN Default */
46 module_param(protocol, int, 0);
48 /*====================================================================*/
51 The event() function is this driver's Card Services event handler.
52 It will be called by Card Services when an appropriate card status
53 event is received. The config() and release() entry points are
54 used to configure or release a socket, in response to card insertion
55 and ejection events. They are invoked from the teles_cs event
59 static int teles_cs_config(struct pcmcia_device *link) __devinit ;
60 static void teles_cs_release(struct pcmcia_device *link);
63 The attach() and detach() entry points are used to create and destroy
64 "instances" of the driver, where each instance represents everything
65 needed to manage one actual PCMCIA card.
68 static void teles_detach(struct pcmcia_device *p_dev) __devexit ;
70 typedef struct local_info_t {
71 struct pcmcia_device *p_dev;
76 /*======================================================================
78 teles_attach() creates an "instance" of the driver, allocatingx
79 local data structures for one device. The device is registered
82 The dev_link structure is initialized, but we don't actually
83 configure the card at this point -- we wait until we receive a
86 ======================================================================*/
88 static int __devinit teles_probe(struct pcmcia_device *link)
92 dev_dbg(&link->dev, "teles_attach()\n");
94 /* Allocate space for private device-specific data */
95 local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
96 if (!local) return -ENOMEM;
103 General socket configuration defaults can go here. In this
104 client, we assume very little, and rely on the CIS for almost
105 everything. In most clients, many details (i.e., number, sizes,
106 and attributes of IO windows) are fixed by the nature of the
107 device, and can be hard-wired here.
109 link->resource[0]->end = 96;
110 link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
112 link->conf.Attributes = CONF_ENABLE_IRQ;
114 return teles_cs_config(link);
117 /*======================================================================
119 This deletes a driver "instance". The device is de-registered
120 with Card Services. If it has been released, all local data
121 structures are freed. Otherwise, the structures will be freed
122 when the device is released.
124 ======================================================================*/
126 static void __devexit teles_detach(struct pcmcia_device *link)
128 local_info_t *info = link->priv;
130 dev_dbg(&link->dev, "teles_detach(0x%p)\n", link);
133 teles_cs_release(link);
138 /*======================================================================
140 teles_cs_config() is scheduled to run after a CARD_INSERTION event
141 is received, to configure the PCMCIA socket, and to make the
142 device available to the system.
144 ======================================================================*/
146 static int teles_cs_configcheck(struct pcmcia_device *p_dev,
147 cistpl_cftable_entry_t *cf,
148 cistpl_cftable_entry_t *dflt,
156 if ((cf->io.nwin > 0) && cf->io.win[0].base) {
157 printk(KERN_INFO "(teles_cs: looks like the 96 model)\n");
158 p_dev->resource[0]->start = cf->io.win[0].base;
159 if (!pcmcia_request_io(p_dev))
162 printk(KERN_INFO "(teles_cs: looks like the 97 model)\n");
163 for (j = 0x2f0; j > 0x100; j -= 0x10) {
164 p_dev->resource[0]->start = j;
165 if (!pcmcia_request_io(p_dev))
172 static int __devinit teles_cs_config(struct pcmcia_device *link)
178 dev_dbg(&link->dev, "teles_config(0x%p)\n", link);
181 i = pcmcia_loop_config(link, teles_cs_configcheck, NULL);
188 i = pcmcia_request_configuration(link, &link->conf);
192 /* Finally, report what we've done */
193 dev_info(&link->dev, "index 0x%02x:",
195 if (link->conf.Attributes & CONF_ENABLE_IRQ)
196 printk(", irq %d", link->irq);
197 if (link->resource[0])
198 printk(" & %pR", link->resource[0]);
199 if (link->resource[1])
200 printk(" & %pR", link->resource[1]);
203 icard.para[0] = link->irq;
204 icard.para[1] = link->resource[0]->start;
205 icard.protocol = protocol;
206 icard.typ = ISDN_CTYPE_TELESPCMCIA;
208 i = hisax_init_pcmcia(link, &(((local_info_t*)link->priv)->busy), &icard);
210 printk(KERN_ERR "teles_cs: failed to initialize Teles PCMCIA %d at i/o %#x\n",
211 i, (unsigned int) link->resource[0]->start);
212 teles_cs_release(link);
216 ((local_info_t*)link->priv)->cardnr = i;
220 teles_cs_release(link);
222 } /* teles_cs_config */
224 /*======================================================================
226 After a card is removed, teles_cs_release() will unregister the net
227 device, and release the PCMCIA configuration. If the device is
228 still open, this will be postponed until it is closed.
230 ======================================================================*/
232 static void teles_cs_release(struct pcmcia_device *link)
234 local_info_t *local = link->priv;
236 dev_dbg(&link->dev, "teles_cs_release(0x%p)\n", link);
239 if (local->cardnr >= 0) {
240 /* no unregister function with hisax */
241 HiSax_closecard(local->cardnr);
245 pcmcia_disable_device(link);
246 } /* teles_cs_release */
248 static int teles_suspend(struct pcmcia_device *link)
250 local_info_t *dev = link->priv;
257 static int teles_resume(struct pcmcia_device *link)
259 local_info_t *dev = link->priv;
267 static struct pcmcia_device_id teles_ids[] = {
268 PCMCIA_DEVICE_PROD_ID12("TELES", "S0/PC", 0x67b50eae, 0xe9e70119),
271 MODULE_DEVICE_TABLE(pcmcia, teles_ids);
273 static struct pcmcia_driver teles_cs_driver = {
274 .owner = THIS_MODULE,
278 .probe = teles_probe,
279 .remove = __devexit_p(teles_detach),
280 .id_table = teles_ids,
281 .suspend = teles_suspend,
282 .resume = teles_resume,
285 static int __init init_teles_cs(void)
287 return pcmcia_register_driver(&teles_cs_driver);
290 static void __exit exit_teles_cs(void)
292 pcmcia_unregister_driver(&teles_cs_driver);
295 module_init(init_teles_cs);
296 module_exit(exit_teles_cs);