2 * PCMCIA client driver for AVM A1 / Fritz!PCMCIA
5 * Copyright 1998-2001 by Carsten Paeth <calle@calle.in-berlin.de>
7 * This software may be used and distributed according to the terms
8 * of the GNU General Public License, incorporated herein by reference.
12 #include <linux/module.h>
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/sched.h>
18 #include <linux/ptrace.h>
19 #include <linux/slab.h>
20 #include <linux/string.h>
22 #include <asm/system.h>
24 #include <pcmcia/cs_types.h>
25 #include <pcmcia/cs.h>
26 #include <pcmcia/cistpl.h>
27 #include <pcmcia/ds.h>
28 #include "hisax_cfg.h"
30 MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for AVM A1/Fritz!PCMCIA cards");
31 MODULE_AUTHOR("Carsten Paeth");
32 MODULE_LICENSE("GPL");
35 All the PCMCIA modules use PCMCIA_DEBUG to control debugging. If
36 you do not define PCMCIA_DEBUG at all, all the debug code will be
37 left out. If you compile with PCMCIA_DEBUG=0, the debug code will
38 be present but disabled -- but it can then be enabled for specific
39 modules at load time with a 'pc_debug=#' option to insmod.
42 static int pc_debug = PCMCIA_DEBUG;
43 module_param(pc_debug, int, 0);
44 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args);
45 static char *version =
46 "avma1_cs.c 1.00 1998/01/23 10:00:00 (Carsten Paeth)";
48 #define DEBUG(n, args...)
51 /*====================================================================*/
53 /* Parameters that can be set with 'insmod' */
55 static int isdnprot = 2;
57 module_param(isdnprot, int, 0);
59 /*====================================================================*/
62 The event() function is this driver's Card Services event handler.
63 It will be called by Card Services when an appropriate card status
64 event is received. The config() and release() entry points are
65 used to configure or release a socket, in response to card insertion
66 and ejection events. They are invoked from the skeleton event
70 static int avma1cs_config(struct pcmcia_device *link);
71 static void avma1cs_release(struct pcmcia_device *link);
74 The attach() and detach() entry points are used to create and destroy
75 "instances" of the driver, where each instance represents everything
76 needed to manage one actual PCMCIA card.
79 static void avma1cs_detach(struct pcmcia_device *p_dev);
83 A linked list of "instances" of the skeleton device. Each actual
84 PCMCIA card corresponds to one device instance, and is described
85 by one struct pcmcia_device structure (defined in ds.h).
87 You may not want to use a linked list for this -- for example, the
88 memory card driver uses an array of struct pcmcia_device pointers, where minor
89 device numbers are used to derive the corresponding array index.
93 A driver needs to provide a dev_node_t structure for each device
94 on a card. In some cases, there is only one device per card (for
95 example, ethernet cards, modems). In other cases, there may be
96 many actual or logical devices (SCSI adapters, memory cards with
97 multiple partitions). The dev_node_t structures need to be kept
98 in a linked list starting at the 'dev' field of a struct pcmcia_device
99 structure. We allocate them in the card's private data structure,
100 because they generally can't be allocated dynamically.
103 typedef struct local_info_t {
107 /*======================================================================
109 avma1cs_attach() creates an "instance" of the driver, allocating
110 local data structures for one device. The device is registered
113 The dev_link structure is initialized, but we don't actually
114 configure the card at this point -- we wait until we receive a
115 card insertion event.
117 ======================================================================*/
119 static int avma1cs_probe(struct pcmcia_device *p_dev)
123 DEBUG(0, "avma1cs_attach()\n");
125 /* Allocate space for private device-specific data */
126 local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
132 /* The io structure describes IO port mapping */
133 p_dev->io.NumPorts1 = 16;
134 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
135 p_dev->io.NumPorts2 = 16;
136 p_dev->io.Attributes2 = IO_DATA_PATH_WIDTH_16;
137 p_dev->io.IOAddrLines = 5;
139 /* Interrupt setup */
140 p_dev->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
141 p_dev->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
143 p_dev->irq.IRQInfo1 = IRQ_LEVEL_ID;
145 /* General socket configuration */
146 p_dev->conf.Attributes = CONF_ENABLE_IRQ;
147 p_dev->conf.IntType = INT_MEMORY_AND_IO;
148 p_dev->conf.ConfigIndex = 1;
149 p_dev->conf.Present = PRESENT_OPTION;
151 return avma1cs_config(p_dev);
152 } /* avma1cs_attach */
154 /*======================================================================
156 This deletes a driver "instance". The device is de-registered
157 with Card Services. If it has been released, all local data
158 structures are freed. Otherwise, the structures will be freed
159 when the device is released.
161 ======================================================================*/
163 static void avma1cs_detach(struct pcmcia_device *link)
165 DEBUG(0, "avma1cs_detach(0x%p)\n", link);
166 avma1cs_release(link);
168 } /* avma1cs_detach */
170 /*======================================================================
172 avma1cs_config() is scheduled to run after a CARD_INSERTION event
173 is received, to configure the PCMCIA socket, and to make the
174 ethernet device available to the system.
176 ======================================================================*/
178 static int get_tuple(struct pcmcia_device *handle, tuple_t *tuple,
181 int i = pcmcia_get_tuple_data(handle, tuple);
182 if (i != CS_SUCCESS) return i;
183 return pcmcia_parse_tuple(handle, tuple, parse);
186 static int first_tuple(struct pcmcia_device *handle, tuple_t *tuple,
189 int i = pcmcia_get_first_tuple(handle, tuple);
190 if (i != CS_SUCCESS) return i;
191 return get_tuple(handle, tuple, parse);
194 static int next_tuple(struct pcmcia_device *handle, tuple_t *tuple,
197 int i = pcmcia_get_next_tuple(handle, tuple);
198 if (i != CS_SUCCESS) return i;
199 return get_tuple(handle, tuple, parse);
202 static int avma1cs_config(struct pcmcia_device *link)
206 cistpl_cftable_entry_t *cf = &parse.cftable_entry;
216 DEBUG(0, "avma1cs_config(0x%p)\n", link);
220 if (link->prod_id[1])
221 strlcpy(devname, link->prod_id[1], sizeof(devname));
226 tuple.TupleData = (cisdata_t *)buf;
227 tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
228 tuple.Attributes = 0;
229 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
230 i = first_tuple(link, &tuple, &parse);
231 while (i == CS_SUCCESS) {
232 if (cf->io.nwin > 0) {
233 link->conf.ConfigIndex = cf->index;
234 link->io.BasePort1 = cf->io.win[0].base;
235 link->io.NumPorts1 = cf->io.win[0].len;
236 link->io.NumPorts2 = 0;
237 printk(KERN_INFO "avma1_cs: testing i/o %#x-%#x\n",
239 link->io.BasePort1+link->io.NumPorts1 - 1);
240 i = pcmcia_request_io(link, &link->io);
241 if (i == CS_SUCCESS) goto found_port;
243 i = next_tuple(link, &tuple, &parse);
247 if (i != CS_SUCCESS) {
248 cs_error(link, RequestIO, i);
253 * allocate an interrupt line
255 i = pcmcia_request_irq(link, &link->irq);
256 if (i != CS_SUCCESS) {
257 cs_error(link, RequestIRQ, i);
259 pcmcia_disable_device(link);
264 * configure the PCMCIA socket
266 i = pcmcia_request_configuration(link, &link->conf);
267 if (i != CS_SUCCESS) {
268 cs_error(link, RequestConfiguration, i);
269 pcmcia_disable_device(link);
275 /* At this point, the dev_node_t structure(s) should be
276 initialized and arranged in a linked list at link->dev. */
278 strcpy(dev->node.dev_name, "A1");
279 dev->node.major = 45;
281 link->dev_node = &dev->node;
283 /* If any step failed, release any partially configured state */
285 avma1cs_release(link);
289 printk(KERN_NOTICE "avma1_cs: checking at i/o %#x, irq %d\n",
290 link->io.BasePort1, link->irq.AssignedIRQ);
292 icard.para[0] = link->irq.AssignedIRQ;
293 icard.para[1] = link->io.BasePort1;
294 icard.protocol = isdnprot;
295 icard.typ = ISDN_CTYPE_A1_PCMCIA;
297 i = hisax_init_pcmcia(link, &busy, &icard);
299 printk(KERN_ERR "avma1_cs: failed to initialize AVM A1 PCMCIA %d at i/o %#x\n", i, link->io.BasePort1);
300 avma1cs_release(link);
306 } /* avma1cs_config */
308 /*======================================================================
310 After a card is removed, avma1cs_release() will unregister the net
311 device, and release the PCMCIA configuration. If the device is
312 still open, this will be postponed until it is closed.
314 ======================================================================*/
316 static void avma1cs_release(struct pcmcia_device *link)
318 local_info_t *local = link->priv;
320 DEBUG(0, "avma1cs_release(0x%p)\n", link);
322 /* now unregister function with hisax */
323 HiSax_closecard(local->node.minor);
325 pcmcia_disable_device(link);
326 } /* avma1cs_release */
329 static struct pcmcia_device_id avma1cs_ids[] = {
330 PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN A", 0x95d42008, 0xadc9d4bb),
331 PCMCIA_DEVICE_PROD_ID12("ISDN", "CARD", 0x8d9761c8, 0x01c5aa7b),
334 MODULE_DEVICE_TABLE(pcmcia, avma1cs_ids);
336 static struct pcmcia_driver avma1cs_driver = {
337 .owner = THIS_MODULE,
341 .probe = avma1cs_probe,
342 .remove = avma1cs_detach,
343 .id_table = avma1cs_ids,
346 /*====================================================================*/
348 static int __init init_avma1_cs(void)
350 return(pcmcia_register_driver(&avma1cs_driver));
353 static void __exit exit_avma1_cs(void)
355 pcmcia_unregister_driver(&avma1cs_driver);
358 module_init(init_avma1_cs);
359 module_exit(exit_avma1_cs);