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_types.h>
31 #include <pcmcia/cs.h>
32 #include <pcmcia/cistpl.h>
33 #include <pcmcia/cisreg.h>
34 #include <pcmcia/ds.h>
35 #include "hisax_cfg.h"
37 MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for Teles PCMCIA cards");
38 MODULE_AUTHOR("Christof Petig, christof.petig@wtal.de, Karsten Keil, kkeil@suse.de");
39 MODULE_LICENSE("GPL");
42 All the PCMCIA modules use PCMCIA_DEBUG to control debugging. If
43 you do not define PCMCIA_DEBUG at all, all the debug code will be
44 left out. If you compile with PCMCIA_DEBUG=0, the debug code will
45 be present but disabled -- but it can then be enabled for specific
46 modules at load time with a 'pc_debug=#' option to insmod.
50 static int pc_debug = PCMCIA_DEBUG;
51 module_param(pc_debug, int, 0);
52 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args);
53 static char *version =
54 "teles_cs.c 2.10 2002/07/30 22:23:34 kkeil";
56 #define DEBUG(n, args...)
59 /*====================================================================*/
61 /* Parameters that can be set with 'insmod' */
63 static int protocol = 2; /* EURO-ISDN Default */
64 module_param(protocol, int, 0);
66 /*====================================================================*/
69 The event() function is this driver's Card Services event handler.
70 It will be called by Card Services when an appropriate card status
71 event is received. The config() and release() entry points are
72 used to configure or release a socket, in response to card insertion
73 and ejection events. They are invoked from the teles_cs event
77 static int teles_cs_config(struct pcmcia_device *link);
78 static void teles_cs_release(struct pcmcia_device *link);
81 The attach() and detach() entry points are used to create and destroy
82 "instances" of the driver, where each instance represents everything
83 needed to manage one actual PCMCIA card.
86 static void teles_detach(struct pcmcia_device *p_dev);
89 A linked list of "instances" of the teles_cs device. Each actual
90 PCMCIA card corresponds to one device instance, and is described
91 by one struct pcmcia_device structure (defined in ds.h).
93 You may not want to use a linked list for this -- for example, the
94 memory card driver uses an array of struct pcmcia_device pointers, where minor
95 device numbers are used to derive the corresponding array index.
99 A driver needs to provide a dev_node_t structure for each device
100 on a card. In some cases, there is only one device per card (for
101 example, ethernet cards, modems). In other cases, there may be
102 many actual or logical devices (SCSI adapters, memory cards with
103 multiple partitions). The dev_node_t structures need to be kept
104 in a linked list starting at the 'dev' field of a struct pcmcia_device
105 structure. We allocate them in the card's private data structure,
106 because they generally shouldn't be allocated dynamically.
107 In this case, we also provide a flag to indicate if a device is
108 "stopped" due to a power management event, or card ejection. The
109 device IO routines can use a flag like this to throttle IO to a
110 card that is not ready to accept it.
113 typedef struct local_info_t {
114 struct pcmcia_device *p_dev;
120 /*======================================================================
122 teles_attach() creates an "instance" of the driver, allocatingx
123 local data structures for one device. The device is registered
126 The dev_link structure is initialized, but we don't actually
127 configure the card at this point -- we wait until we receive a
128 card insertion event.
130 ======================================================================*/
132 static int teles_probe(struct pcmcia_device *link)
136 DEBUG(0, "teles_attach()\n");
138 /* Allocate space for private device-specific data */
139 local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
140 if (!local) return -ENOMEM;
146 /* Interrupt setup */
147 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
148 link->irq.IRQInfo1 = IRQ_LEVEL_ID|IRQ_SHARE_ID;
149 link->irq.Handler = NULL;
152 General socket configuration defaults can go here. In this
153 client, we assume very little, and rely on the CIS for almost
154 everything. In most clients, many details (i.e., number, sizes,
155 and attributes of IO windows) are fixed by the nature of the
156 device, and can be hard-wired here.
158 link->io.NumPorts1 = 96;
159 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
160 link->io.IOAddrLines = 5;
162 link->conf.Attributes = CONF_ENABLE_IRQ;
163 link->conf.IntType = INT_MEMORY_AND_IO;
165 return teles_cs_config(link);
168 /*======================================================================
170 This deletes a driver "instance". The device is de-registered
171 with Card Services. If it has been released, all local data
172 structures are freed. Otherwise, the structures will be freed
173 when the device is released.
175 ======================================================================*/
177 static void teles_detach(struct pcmcia_device *link)
179 local_info_t *info = link->priv;
181 DEBUG(0, "teles_detach(0x%p)\n", link);
184 teles_cs_release(link);
189 /*======================================================================
191 teles_cs_config() is scheduled to run after a CARD_INSERTION event
192 is received, to configure the PCMCIA socket, and to make the
193 device available to the system.
195 ======================================================================*/
197 static int teles_cs_configcheck(struct pcmcia_device *p_dev,
198 cistpl_cftable_entry_t *cf,
199 cistpl_cftable_entry_t *dflt,
205 if ((cf->io.nwin > 0) && cf->io.win[0].base) {
206 printk(KERN_INFO "(teles_cs: looks like the 96 model)\n");
207 p_dev->io.BasePort1 = cf->io.win[0].base;
208 if (!pcmcia_request_io(p_dev, &p_dev->io))
211 printk(KERN_INFO "(teles_cs: looks like the 97 model)\n");
212 for (j = 0x2f0; j > 0x100; j -= 0x10) {
213 p_dev->io.BasePort1 = j;
214 if (!pcmcia_request_io(p_dev, &p_dev->io))
221 static int teles_cs_config(struct pcmcia_device *link)
227 DEBUG(0, "teles_config(0x%p)\n", link);
230 i = pcmcia_loop_config(link, teles_cs_configcheck, NULL);
236 i = pcmcia_request_irq(link, &link->irq);
238 link->irq.AssignedIRQ = 0;
239 last_fn = RequestIRQ;
243 i = pcmcia_request_configuration(link, &link->conf);
245 last_fn = RequestConfiguration;
249 /* At this point, the dev_node_t structure(s) should be
250 initialized and arranged in a linked list at link->dev. *//* */
251 sprintf(dev->node.dev_name, "teles");
252 dev->node.major = dev->node.minor = 0x0;
254 link->dev_node = &dev->node;
256 /* Finally, report what we've done */
257 printk(KERN_INFO "%s: index 0x%02x:",
258 dev->node.dev_name, link->conf.ConfigIndex);
259 if (link->conf.Attributes & CONF_ENABLE_IRQ)
260 printk(", irq %d", link->irq.AssignedIRQ);
261 if (link->io.NumPorts1)
262 printk(", io 0x%04x-0x%04x", link->io.BasePort1,
263 link->io.BasePort1+link->io.NumPorts1-1);
264 if (link->io.NumPorts2)
265 printk(" & 0x%04x-0x%04x", link->io.BasePort2,
266 link->io.BasePort2+link->io.NumPorts2-1);
269 icard.para[0] = link->irq.AssignedIRQ;
270 icard.para[1] = link->io.BasePort1;
271 icard.protocol = protocol;
272 icard.typ = ISDN_CTYPE_TELESPCMCIA;
274 i = hisax_init_pcmcia(link, &(((local_info_t*)link->priv)->busy), &icard);
276 printk(KERN_ERR "teles_cs: failed to initialize Teles PCMCIA %d at i/o %#x\n",
277 i, link->io.BasePort1);
278 teles_cs_release(link);
282 ((local_info_t*)link->priv)->cardnr = i;
286 cs_error(link, last_fn, i);
287 teles_cs_release(link);
289 } /* teles_cs_config */
291 /*======================================================================
293 After a card is removed, teles_cs_release() will unregister the net
294 device, and release the PCMCIA configuration. If the device is
295 still open, this will be postponed until it is closed.
297 ======================================================================*/
299 static void teles_cs_release(struct pcmcia_device *link)
301 local_info_t *local = link->priv;
303 DEBUG(0, "teles_cs_release(0x%p)\n", link);
306 if (local->cardnr >= 0) {
307 /* no unregister function with hisax */
308 HiSax_closecard(local->cardnr);
312 pcmcia_disable_device(link);
313 } /* teles_cs_release */
315 static int teles_suspend(struct pcmcia_device *link)
317 local_info_t *dev = link->priv;
324 static int teles_resume(struct pcmcia_device *link)
326 local_info_t *dev = link->priv;
334 static struct pcmcia_device_id teles_ids[] = {
335 PCMCIA_DEVICE_PROD_ID12("TELES", "S0/PC", 0x67b50eae, 0xe9e70119),
338 MODULE_DEVICE_TABLE(pcmcia, teles_ids);
340 static struct pcmcia_driver teles_cs_driver = {
341 .owner = THIS_MODULE,
345 .probe = teles_probe,
346 .remove = teles_detach,
347 .id_table = teles_ids,
348 .suspend = teles_suspend,
349 .resume = teles_resume,
352 static int __init init_teles_cs(void)
354 return pcmcia_register_driver(&teles_cs_driver);
357 static void __exit exit_teles_cs(void)
359 pcmcia_unregister_driver(&teles_cs_driver);
362 module_init(init_teles_cs);
363 module_exit(exit_teles_cs);