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/ptrace.h>
18 #include <linux/slab.h>
19 #include <linux/string.h>
21 #include <asm/system.h>
23 #include <pcmcia/cs_types.h>
24 #include <pcmcia/cs.h>
25 #include <pcmcia/cistpl.h>
26 #include <pcmcia/ds.h>
27 #include "hisax_cfg.h"
29 MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for AVM A1/Fritz!PCMCIA cards");
30 MODULE_AUTHOR("Carsten Paeth");
31 MODULE_LICENSE("GPL");
34 /*====================================================================*/
36 /* Parameters that can be set with 'insmod' */
38 static int isdnprot = 2;
40 module_param(isdnprot, int, 0);
42 /*====================================================================*/
45 The event() function is this driver's Card Services event handler.
46 It will be called by Card Services when an appropriate card status
47 event is received. The config() and release() entry points are
48 used to configure or release a socket, in response to card insertion
49 and ejection events. They are invoked from the skeleton event
53 static int avma1cs_config(struct pcmcia_device *link) __devinit ;
54 static void avma1cs_release(struct pcmcia_device *link);
57 The attach() and detach() entry points are used to create and destroy
58 "instances" of the driver, where each instance represents everything
59 needed to manage one actual PCMCIA card.
62 static void avma1cs_detach(struct pcmcia_device *p_dev) __devexit ;
66 A linked list of "instances" of the skeleton device. Each actual
67 PCMCIA card corresponds to one device instance, and is described
68 by one struct pcmcia_device structure (defined in ds.h).
70 You may not want to use a linked list for this -- for example, the
71 memory card driver uses an array of struct pcmcia_device pointers, where minor
72 device numbers are used to derive the corresponding array index.
76 A driver needs to provide a dev_node_t structure for each device
77 on a card. In some cases, there is only one device per card (for
78 example, ethernet cards, modems). In other cases, there may be
79 many actual or logical devices (SCSI adapters, memory cards with
80 multiple partitions). The dev_node_t structures need to be kept
81 in a linked list starting at the 'dev' field of a struct pcmcia_device
82 structure. We allocate them in the card's private data structure,
83 because they generally can't be allocated dynamically.
86 typedef struct local_info_t {
90 /*======================================================================
92 avma1cs_attach() creates an "instance" of the driver, allocating
93 local data structures for one device. The device is registered
96 The dev_link structure is initialized, but we don't actually
97 configure the card at this point -- we wait until we receive a
100 ======================================================================*/
102 static int __devinit avma1cs_probe(struct pcmcia_device *p_dev)
106 dev_dbg(&p_dev->dev, "avma1cs_attach()\n");
108 /* Allocate space for private device-specific data */
109 local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
115 /* The io structure describes IO port mapping */
116 p_dev->io.NumPorts1 = 16;
117 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
118 p_dev->io.NumPorts2 = 16;
119 p_dev->io.Attributes2 = IO_DATA_PATH_WIDTH_16;
120 p_dev->io.IOAddrLines = 5;
122 /* General socket configuration */
123 p_dev->conf.Attributes = CONF_ENABLE_IRQ;
124 p_dev->conf.IntType = INT_MEMORY_AND_IO;
125 p_dev->conf.ConfigIndex = 1;
126 p_dev->conf.Present = PRESENT_OPTION;
128 return avma1cs_config(p_dev);
129 } /* avma1cs_attach */
131 /*======================================================================
133 This deletes a driver "instance". The device is de-registered
134 with Card Services. If it has been released, all local data
135 structures are freed. Otherwise, the structures will be freed
136 when the device is released.
138 ======================================================================*/
140 static void __devexit avma1cs_detach(struct pcmcia_device *link)
142 dev_dbg(&link->dev, "avma1cs_detach(0x%p)\n", link);
143 avma1cs_release(link);
145 } /* avma1cs_detach */
147 /*======================================================================
149 avma1cs_config() is scheduled to run after a CARD_INSERTION event
150 is received, to configure the PCMCIA socket, and to make the
151 ethernet device available to the system.
153 ======================================================================*/
155 static int avma1cs_configcheck(struct pcmcia_device *p_dev,
156 cistpl_cftable_entry_t *cf,
157 cistpl_cftable_entry_t *dflt,
161 if (cf->io.nwin <= 0)
164 p_dev->io.BasePort1 = cf->io.win[0].base;
165 p_dev->io.NumPorts1 = cf->io.win[0].len;
166 p_dev->io.NumPorts2 = 0;
167 printk(KERN_INFO "avma1_cs: testing i/o %#x-%#x\n",
169 p_dev->io.BasePort1+p_dev->io.NumPorts1-1);
170 return pcmcia_request_io(p_dev, &p_dev->io);
174 static int __devinit avma1cs_config(struct pcmcia_device *link)
184 dev_dbg(&link->dev, "avma1cs_config(0x%p)\n", link);
187 if (link->prod_id[1])
188 strlcpy(devname, link->prod_id[1], sizeof(devname));
190 if (pcmcia_loop_config(link, avma1cs_configcheck, NULL))
195 * allocate an interrupt line
199 pcmcia_disable_device(link);
204 * configure the PCMCIA socket
206 i = pcmcia_request_configuration(link, &link->conf);
208 pcmcia_disable_device(link);
214 /* At this point, the dev_node_t structure(s) should be
215 initialized and arranged in a linked list at link->dev. */
217 strcpy(dev->node.dev_name, "A1");
218 dev->node.major = 45;
220 link->dev_node = &dev->node;
222 /* If any step failed, release any partially configured state */
224 avma1cs_release(link);
228 printk(KERN_NOTICE "avma1_cs: checking at i/o %#x, irq %d\n",
229 link->io.BasePort1, link->irq);
231 icard.para[0] = link->irq;
232 icard.para[1] = link->io.BasePort1;
233 icard.protocol = isdnprot;
234 icard.typ = ISDN_CTYPE_A1_PCMCIA;
236 i = hisax_init_pcmcia(link, &busy, &icard);
238 printk(KERN_ERR "avma1_cs: failed to initialize AVM A1 PCMCIA %d at i/o %#x\n", i, link->io.BasePort1);
239 avma1cs_release(link);
245 } /* avma1cs_config */
247 /*======================================================================
249 After a card is removed, avma1cs_release() will unregister the net
250 device, and release the PCMCIA configuration. If the device is
251 still open, this will be postponed until it is closed.
253 ======================================================================*/
255 static void avma1cs_release(struct pcmcia_device *link)
257 local_info_t *local = link->priv;
259 dev_dbg(&link->dev, "avma1cs_release(0x%p)\n", link);
261 /* now unregister function with hisax */
262 HiSax_closecard(local->node.minor);
264 pcmcia_disable_device(link);
265 } /* avma1cs_release */
268 static struct pcmcia_device_id avma1cs_ids[] = {
269 PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN A", 0x95d42008, 0xadc9d4bb),
270 PCMCIA_DEVICE_PROD_ID12("ISDN", "CARD", 0x8d9761c8, 0x01c5aa7b),
273 MODULE_DEVICE_TABLE(pcmcia, avma1cs_ids);
275 static struct pcmcia_driver avma1cs_driver = {
276 .owner = THIS_MODULE,
280 .probe = avma1cs_probe,
281 .remove = __devexit_p(avma1cs_detach),
282 .id_table = avma1cs_ids,
285 /*====================================================================*/
287 static int __init init_avma1_cs(void)
289 return(pcmcia_register_driver(&avma1cs_driver));
292 static void __exit exit_avma1_cs(void)
294 pcmcia_unregister_driver(&avma1cs_driver);
297 module_init(init_avma1_cs);
298 module_exit(exit_avma1_cs);