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 /*====================================================================*/
44 /* Parameters that can be set with 'insmod' */
46 static int protocol
= 2; /* EURO-ISDN Default */
47 module_param(protocol
, int, 0);
49 /*====================================================================*/
52 The event() function is this driver's Card Services event handler.
53 It will be called by Card Services when an appropriate card status
54 event is received. The config() and release() entry points are
55 used to configure or release a socket, in response to card insertion
56 and ejection events. They are invoked from the teles_cs event
60 static int teles_cs_config(struct pcmcia_device
*link
);
61 static void teles_cs_release(struct pcmcia_device
*link
);
64 The attach() and detach() entry points are used to create and destroy
65 "instances" of the driver, where each instance represents everything
66 needed to manage one actual PCMCIA card.
69 static void teles_detach(struct pcmcia_device
*p_dev
);
72 A linked list of "instances" of the teles_cs device. Each actual
73 PCMCIA card corresponds to one device instance, and is described
74 by one struct pcmcia_device structure (defined in ds.h).
76 You may not want to use a linked list for this -- for example, the
77 memory card driver uses an array of struct pcmcia_device pointers, where minor
78 device numbers are used to derive the corresponding array index.
82 A driver needs to provide a dev_node_t structure for each device
83 on a card. In some cases, there is only one device per card (for
84 example, ethernet cards, modems). In other cases, there may be
85 many actual or logical devices (SCSI adapters, memory cards with
86 multiple partitions). The dev_node_t structures need to be kept
87 in a linked list starting at the 'dev' field of a struct pcmcia_device
88 structure. We allocate them in the card's private data structure,
89 because they generally shouldn't be allocated dynamically.
90 In this case, we also provide a flag to indicate if a device is
91 "stopped" due to a power management event, or card ejection. The
92 device IO routines can use a flag like this to throttle IO to a
93 card that is not ready to accept it.
96 typedef struct local_info_t
{
97 struct pcmcia_device
*p_dev
;
103 /*======================================================================
105 teles_attach() creates an "instance" of the driver, allocatingx
106 local data structures for one device. The device is registered
109 The dev_link structure is initialized, but we don't actually
110 configure the card at this point -- we wait until we receive a
111 card insertion event.
113 ======================================================================*/
115 static int teles_probe(struct pcmcia_device
*link
)
119 dev_dbg(&link
->dev
, "teles_attach()\n");
121 /* Allocate space for private device-specific data */
122 local
= kzalloc(sizeof(local_info_t
), GFP_KERNEL
);
123 if (!local
) return -ENOMEM
;
129 /* Interrupt setup */
130 link
->irq
.Attributes
= IRQ_TYPE_DYNAMIC_SHARING
|IRQ_FIRST_SHARED
;
131 link
->irq
.Handler
= NULL
;
134 General socket configuration defaults can go here. In this
135 client, we assume very little, and rely on the CIS for almost
136 everything. In most clients, many details (i.e., number, sizes,
137 and attributes of IO windows) are fixed by the nature of the
138 device, and can be hard-wired here.
140 link
->io
.NumPorts1
= 96;
141 link
->io
.Attributes1
= IO_DATA_PATH_WIDTH_AUTO
;
142 link
->io
.IOAddrLines
= 5;
144 link
->conf
.Attributes
= CONF_ENABLE_IRQ
;
145 link
->conf
.IntType
= INT_MEMORY_AND_IO
;
147 return teles_cs_config(link
);
150 /*======================================================================
152 This deletes a driver "instance". The device is de-registered
153 with Card Services. If it has been released, all local data
154 structures are freed. Otherwise, the structures will be freed
155 when the device is released.
157 ======================================================================*/
159 static void teles_detach(struct pcmcia_device
*link
)
161 local_info_t
*info
= link
->priv
;
163 dev_dbg(&link
->dev
, "teles_detach(0x%p)\n", link
);
166 teles_cs_release(link
);
171 /*======================================================================
173 teles_cs_config() is scheduled to run after a CARD_INSERTION event
174 is received, to configure the PCMCIA socket, and to make the
175 device available to the system.
177 ======================================================================*/
179 static int teles_cs_configcheck(struct pcmcia_device
*p_dev
,
180 cistpl_cftable_entry_t
*cf
,
181 cistpl_cftable_entry_t
*dflt
,
187 if ((cf
->io
.nwin
> 0) && cf
->io
.win
[0].base
) {
188 printk(KERN_INFO
"(teles_cs: looks like the 96 model)\n");
189 p_dev
->io
.BasePort1
= cf
->io
.win
[0].base
;
190 if (!pcmcia_request_io(p_dev
, &p_dev
->io
))
193 printk(KERN_INFO
"(teles_cs: looks like the 97 model)\n");
194 for (j
= 0x2f0; j
> 0x100; j
-= 0x10) {
195 p_dev
->io
.BasePort1
= j
;
196 if (!pcmcia_request_io(p_dev
, &p_dev
->io
))
203 static int teles_cs_config(struct pcmcia_device
*link
)
209 dev_dbg(&link
->dev
, "teles_config(0x%p)\n", link
);
212 i
= pcmcia_loop_config(link
, teles_cs_configcheck
, NULL
);
216 i
= pcmcia_request_irq(link
, &link
->irq
);
218 link
->irq
.AssignedIRQ
= 0;
222 i
= pcmcia_request_configuration(link
, &link
->conf
);
226 /* At this point, the dev_node_t structure(s) should be
227 initialized and arranged in a linked list at link->dev. *//* */
228 sprintf(dev
->node
.dev_name
, "teles");
229 dev
->node
.major
= dev
->node
.minor
= 0x0;
231 link
->dev_node
= &dev
->node
;
233 /* Finally, report what we've done */
234 printk(KERN_INFO
"%s: index 0x%02x:",
235 dev
->node
.dev_name
, link
->conf
.ConfigIndex
);
236 if (link
->conf
.Attributes
& CONF_ENABLE_IRQ
)
237 printk(", irq %d", link
->irq
.AssignedIRQ
);
238 if (link
->io
.NumPorts1
)
239 printk(", io 0x%04x-0x%04x", link
->io
.BasePort1
,
240 link
->io
.BasePort1
+link
->io
.NumPorts1
-1);
241 if (link
->io
.NumPorts2
)
242 printk(" & 0x%04x-0x%04x", link
->io
.BasePort2
,
243 link
->io
.BasePort2
+link
->io
.NumPorts2
-1);
246 icard
.para
[0] = link
->irq
.AssignedIRQ
;
247 icard
.para
[1] = link
->io
.BasePort1
;
248 icard
.protocol
= protocol
;
249 icard
.typ
= ISDN_CTYPE_TELESPCMCIA
;
251 i
= hisax_init_pcmcia(link
, &(((local_info_t
*)link
->priv
)->busy
), &icard
);
253 printk(KERN_ERR
"teles_cs: failed to initialize Teles PCMCIA %d at i/o %#x\n",
254 i
, link
->io
.BasePort1
);
255 teles_cs_release(link
);
259 ((local_info_t
*)link
->priv
)->cardnr
= i
;
263 teles_cs_release(link
);
265 } /* teles_cs_config */
267 /*======================================================================
269 After a card is removed, teles_cs_release() will unregister the net
270 device, and release the PCMCIA configuration. If the device is
271 still open, this will be postponed until it is closed.
273 ======================================================================*/
275 static void teles_cs_release(struct pcmcia_device
*link
)
277 local_info_t
*local
= link
->priv
;
279 dev_dbg(&link
->dev
, "teles_cs_release(0x%p)\n", link
);
282 if (local
->cardnr
>= 0) {
283 /* no unregister function with hisax */
284 HiSax_closecard(local
->cardnr
);
288 pcmcia_disable_device(link
);
289 } /* teles_cs_release */
291 static int teles_suspend(struct pcmcia_device
*link
)
293 local_info_t
*dev
= link
->priv
;
300 static int teles_resume(struct pcmcia_device
*link
)
302 local_info_t
*dev
= link
->priv
;
310 static struct pcmcia_device_id teles_ids
[] = {
311 PCMCIA_DEVICE_PROD_ID12("TELES", "S0/PC", 0x67b50eae, 0xe9e70119),
314 MODULE_DEVICE_TABLE(pcmcia
, teles_ids
);
316 static struct pcmcia_driver teles_cs_driver
= {
317 .owner
= THIS_MODULE
,
321 .probe
= teles_probe
,
322 .remove
= teles_detach
,
323 .id_table
= teles_ids
,
324 .suspend
= teles_suspend
,
325 .resume
= teles_resume
,
328 static int __init
init_teles_cs(void)
330 return pcmcia_register_driver(&teles_cs_driver
);
333 static void __exit
exit_teles_cs(void)
335 pcmcia_unregister_driver(&teles_cs_driver
);
338 module_init(init_teles_cs
);
339 module_exit(exit_teles_cs
);