blob: 1932029de48d67cf7dd10ed18f2de11e40056c29 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * ds.c -- 16-bit PCMCIA core support
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 *
8 * The initial developer of the original code is David A. Hinds
9 * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
10 * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
11 *
12 * (C) 1999 David A. Hinds
Dominik Brodowski7b24e792010-07-11 10:26:53 +020013 * (C) 2003 - 2010 Dominik Brodowski
Linus Torvalds1da177e2005-04-16 15:20:36 -070014 */
15
Linus Torvalds1da177e2005-04-16 15:20:36 -070016#include <linux/kernel.h>
Dominik Brodowski3b659fb2005-06-27 16:28:51 -070017#include <linux/module.h>
18#include <linux/init.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070019#include <linux/errno.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070020#include <linux/list.h>
21#include <linux/delay.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070022#include <linux/workqueue.h>
Dominik Brodowski840c2ac2005-06-27 16:28:04 -070023#include <linux/crc32.h>
Dominik Brodowskidaa95172005-06-27 16:28:14 -070024#include <linux/firmware.h>
Dominik Brodowski360b65b2006-01-10 20:50:39 +010025#include <linux/kref.h>
James Bottomley43d9f7f2007-10-16 01:23:58 -070026#include <linux/dma-mapping.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090027#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070028
Linus Torvalds1da177e2005-04-16 15:20:36 -070029#include <pcmcia/cistpl.h>
30#include <pcmcia/ds.h>
31#include <pcmcia/ss.h>
32
33#include "cs_internal.h"
34
35/*====================================================================*/
36
37/* Module parameters */
38
39MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
40MODULE_DESCRIPTION("PCMCIA Driver Services");
41MODULE_LICENSE("GPL");
42
Linus Torvalds1da177e2005-04-16 15:20:36 -070043
Linus Torvalds1da177e2005-04-16 15:20:36 -070044/*====================================================================*/
45
Dominik Brodowski23a83bf2005-06-27 16:28:07 -070046static void pcmcia_check_driver(struct pcmcia_driver *p_drv)
47{
Joe Perchese9fb13b2011-05-03 19:29:00 -070048 const struct pcmcia_device_id *did = p_drv->id_table;
Dominik Brodowski23a83bf2005-06-27 16:28:07 -070049 unsigned int i;
50 u32 hash;
51
Dominik Brodowskif8cfa612005-11-14 21:25:51 +010052 if (!p_drv->probe || !p_drv->remove)
Pavel Roskinba5bb6b2005-07-28 01:07:20 -070053 printk(KERN_DEBUG "pcmcia: %s lacks a requisite callback "
Dominik Brodowski2e9b9812010-08-08 11:36:26 +020054 "function\n", p_drv->name);
Dominik Brodowski1e212f32005-07-07 17:59:00 -070055
Dominik Brodowski23a83bf2005-06-27 16:28:07 -070056 while (did && did->match_flags) {
Dominik Brodowski9fea84f2009-12-07 22:11:45 +010057 for (i = 0; i < 4; i++) {
Dominik Brodowski23a83bf2005-06-27 16:28:07 -070058 if (!did->prod_id[i])
59 continue;
60
61 hash = crc32(0, did->prod_id[i], strlen(did->prod_id[i]));
62 if (hash == did->prod_id_hash[i])
63 continue;
64
65 printk(KERN_DEBUG "pcmcia: %s: invalid hash for "
66 "product string \"%s\": is 0x%x, should "
Dominik Brodowski2e9b9812010-08-08 11:36:26 +020067 "be 0x%x\n", p_drv->name, did->prod_id[i],
Dominik Brodowski23a83bf2005-06-27 16:28:07 -070068 did->prod_id_hash[i], hash);
Dominik Brodowski5085cb22005-06-27 16:28:45 -070069 printk(KERN_DEBUG "pcmcia: see "
70 "Documentation/pcmcia/devicetable.txt for "
71 "details\n");
Dominik Brodowski23a83bf2005-06-27 16:28:07 -070072 }
73 did++;
74 }
75
76 return;
77}
78
Dominik Brodowskidaa95172005-06-27 16:28:14 -070079
Linus Torvalds1da177e2005-04-16 15:20:36 -070080/*======================================================================*/
81
Linus Torvalds1da177e2005-04-16 15:20:36 -070082
Bernhard Walle6179b552007-05-06 14:48:44 -070083struct pcmcia_dynid {
84 struct list_head node;
85 struct pcmcia_device_id id;
86};
87
88/**
89 * pcmcia_store_new_id - add a new PCMCIA device ID to this driver and re-probe devices
90 * @driver: target device driver
91 * @buf: buffer for scanning device ID data
92 * @count: input size
93 *
94 * Adds a new dynamic PCMCIA device ID to this driver,
95 * and causes the driver to probe for all devices again.
96 */
97static ssize_t
98pcmcia_store_new_id(struct device_driver *driver, const char *buf, size_t count)
99{
100 struct pcmcia_dynid *dynid;
101 struct pcmcia_driver *pdrv = to_pcmcia_drv(driver);
102 __u16 match_flags, manf_id, card_id;
103 __u8 func_id, function, device_no;
104 __u32 prod_id_hash[4] = {0, 0, 0, 0};
Dominik Brodowski9fea84f2009-12-07 22:11:45 +0100105 int fields = 0;
Bernhard Walle6179b552007-05-06 14:48:44 -0700106 int retval = 0;
107
108 fields = sscanf(buf, "%hx %hx %hx %hhx %hhx %hhx %x %x %x %x",
109 &match_flags, &manf_id, &card_id, &func_id, &function, &device_no,
110 &prod_id_hash[0], &prod_id_hash[1], &prod_id_hash[2], &prod_id_hash[3]);
111 if (fields < 6)
112 return -EINVAL;
113
114 dynid = kzalloc(sizeof(struct pcmcia_dynid), GFP_KERNEL);
115 if (!dynid)
116 return -ENOMEM;
117
Bernhard Walle6179b552007-05-06 14:48:44 -0700118 dynid->id.match_flags = match_flags;
119 dynid->id.manf_id = manf_id;
120 dynid->id.card_id = card_id;
121 dynid->id.func_id = func_id;
122 dynid->id.function = function;
123 dynid->id.device_no = device_no;
124 memcpy(dynid->id.prod_id_hash, prod_id_hash, sizeof(__u32) * 4);
125
Dominik Brodowski3f565232010-01-16 13:06:40 +0100126 mutex_lock(&pdrv->dynids.lock);
Wolfram Sangb4b3d7b2009-07-20 10:58:59 +0200127 list_add_tail(&dynid->node, &pdrv->dynids.list);
Dominik Brodowski3f565232010-01-16 13:06:40 +0100128 mutex_unlock(&pdrv->dynids.lock);
Bernhard Walle6179b552007-05-06 14:48:44 -0700129
130 if (get_driver(&pdrv->drv)) {
131 retval = driver_attach(&pdrv->drv);
132 put_driver(&pdrv->drv);
133 }
134
135 if (retval)
136 return retval;
137 return count;
138}
139static DRIVER_ATTR(new_id, S_IWUSR, NULL, pcmcia_store_new_id);
140
141static void
142pcmcia_free_dynids(struct pcmcia_driver *drv)
143{
144 struct pcmcia_dynid *dynid, *n;
145
Dominik Brodowski3f565232010-01-16 13:06:40 +0100146 mutex_lock(&drv->dynids.lock);
Bernhard Walle6179b552007-05-06 14:48:44 -0700147 list_for_each_entry_safe(dynid, n, &drv->dynids.list, node) {
148 list_del(&dynid->node);
149 kfree(dynid);
150 }
Dominik Brodowski3f565232010-01-16 13:06:40 +0100151 mutex_unlock(&drv->dynids.lock);
Bernhard Walle6179b552007-05-06 14:48:44 -0700152}
153
154static int
155pcmcia_create_newid_file(struct pcmcia_driver *drv)
156{
157 int error = 0;
158 if (drv->probe != NULL)
Greg Kroah-Hartman2344c6d2007-11-28 12:23:18 -0800159 error = driver_create_file(&drv->drv, &driver_attr_new_id);
Bernhard Walle6179b552007-05-06 14:48:44 -0700160 return error;
161}
162
163
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164/**
165 * pcmcia_register_driver - register a PCMCIA driver with the bus core
Randy Dunlap78187862007-12-10 15:49:22 -0800166 * @driver: the &driver being registered
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167 *
168 * Registers a PCMCIA driver with the PCMCIA bus core.
169 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170int pcmcia_register_driver(struct pcmcia_driver *driver)
171{
Bernhard Walle6179b552007-05-06 14:48:44 -0700172 int error;
173
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174 if (!driver)
175 return -EINVAL;
176
Dominik Brodowski23a83bf2005-06-27 16:28:07 -0700177 pcmcia_check_driver(driver);
178
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179 /* initialize common fields */
180 driver->drv.bus = &pcmcia_bus_type;
181 driver->drv.owner = driver->owner;
Dominik Brodowski2e9b9812010-08-08 11:36:26 +0200182 driver->drv.name = driver->name;
Dominik Brodowski3f565232010-01-16 13:06:40 +0100183 mutex_init(&driver->dynids.lock);
Bernhard Walle6179b552007-05-06 14:48:44 -0700184 INIT_LIST_HEAD(&driver->dynids.list);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185
Dominik Brodowski2e9b9812010-08-08 11:36:26 +0200186 pr_debug("registering driver %s\n", driver->name);
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200187
Bernhard Walle6179b552007-05-06 14:48:44 -0700188 error = driver_register(&driver->drv);
189 if (error < 0)
190 return error;
191
192 error = pcmcia_create_newid_file(driver);
193 if (error)
194 driver_unregister(&driver->drv);
195
196 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197}
198EXPORT_SYMBOL(pcmcia_register_driver);
199
200/**
201 * pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core
Randy Dunlap78187862007-12-10 15:49:22 -0800202 * @driver: the &driver being unregistered
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203 */
204void pcmcia_unregister_driver(struct pcmcia_driver *driver)
205{
Dominik Brodowski2e9b9812010-08-08 11:36:26 +0200206 pr_debug("unregistering driver %s\n", driver->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207 driver_unregister(&driver->drv);
Bernhard Walle6179b552007-05-06 14:48:44 -0700208 pcmcia_free_dynids(driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209}
210EXPORT_SYMBOL(pcmcia_unregister_driver);
211
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212
213/* pcmcia_device handling */
214
Dominik Brodowski5716d412010-07-11 09:51:14 +0200215static struct pcmcia_device *pcmcia_get_dev(struct pcmcia_device *p_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216{
217 struct device *tmp_dev;
218 tmp_dev = get_device(&p_dev->dev);
219 if (!tmp_dev)
220 return NULL;
221 return to_pcmcia_dev(tmp_dev);
222}
223
Dominik Brodowski5716d412010-07-11 09:51:14 +0200224static void pcmcia_put_dev(struct pcmcia_device *p_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225{
226 if (p_dev)
227 put_device(&p_dev->dev);
228}
229
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100230static void pcmcia_release_function(struct kref *ref)
231{
232 struct config_t *c = container_of(ref, struct config_t, ref);
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200233 pr_debug("releasing config_t\n");
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100234 kfree(c);
235}
236
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237static void pcmcia_release_dev(struct device *dev)
238{
239 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
Dominik Brodowski44961a02010-01-24 12:11:02 +0100240 int i;
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200241 dev_dbg(dev, "releasing device\n");
Dominik Brodowskidc109492005-06-27 16:28:50 -0700242 pcmcia_put_socket(p_dev->socket);
Dominik Brodowski44961a02010-01-24 12:11:02 +0100243 for (i = 0; i < 4; i++)
244 kfree(p_dev->prod_id[i]);
Brice Goglinbd65a682005-09-09 13:03:29 -0700245 kfree(p_dev->devname);
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100246 kref_put(&p_dev->function_config->ref, pcmcia_release_function);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247 kfree(p_dev);
248}
249
250
Dominik Brodowski9fea84f2009-12-07 22:11:45 +0100251static int pcmcia_device_probe(struct device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252{
253 struct pcmcia_device *p_dev;
254 struct pcmcia_driver *p_drv;
Dominik Brodowskif8cfa612005-11-14 21:25:51 +0100255 struct pcmcia_socket *s;
Dominik Brodowskiaf2b3b52006-10-25 21:49:27 -0400256 cistpl_config_t cis_config;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257 int ret = 0;
258
259 dev = get_device(dev);
260 if (!dev)
261 return -ENODEV;
262
263 p_dev = to_pcmcia_dev(dev);
264 p_drv = to_pcmcia_drv(dev->driver);
Dominik Brodowskif8cfa612005-11-14 21:25:51 +0100265 s = p_dev->socket;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266
Dominik Brodowski2e9b9812010-08-08 11:36:26 +0200267 dev_dbg(dev, "trying to bind to %s\n", p_drv->name);
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200268
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100269 if ((!p_drv->probe) || (!p_dev->function_config) ||
270 (!try_module_get(p_drv->owner))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700271 ret = -EINVAL;
272 goto put_dev;
273 }
274
Dominik Brodowskiaf2b3b52006-10-25 21:49:27 -0400275 /* set up some more device information */
276 ret = pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_CONFIG,
277 &cis_config);
278 if (!ret) {
Dominik Brodowski7feabb62010-07-29 18:35:47 +0200279 p_dev->config_base = cis_config.base;
280 p_dev->config_regs = cis_config.rmask[0];
Dominik Brodowski1cc745d2010-08-01 11:21:14 +0200281 dev_dbg(dev, "base %x, regs %x", p_dev->config_base,
282 p_dev->config_regs);
Dominik Brodowskiaf2b3b52006-10-25 21:49:27 -0400283 } else {
Dominik Brodowskiac449d62008-08-02 18:33:56 +0200284 dev_printk(KERN_INFO, dev,
285 "pcmcia: could not parse base and rmask0 of CIS\n");
Dominik Brodowski7feabb62010-07-29 18:35:47 +0200286 p_dev->config_base = 0;
287 p_dev->config_regs = 0;
Dominik Brodowskiaf2b3b52006-10-25 21:49:27 -0400288 }
289
Dominik Brodowskif8cfa612005-11-14 21:25:51 +0100290 ret = p_drv->probe(p_dev);
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200291 if (ret) {
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200292 dev_dbg(dev, "binding to %s failed with %d\n",
Dominik Brodowski2e9b9812010-08-08 11:36:26 +0200293 p_drv->name, ret);
Dominik Brodowski82d56e62006-01-27 19:15:02 +0100294 goto put_module;
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200295 }
Dominik Brodowski2e9b9812010-08-08 11:36:26 +0200296 dev_dbg(dev, "%s bound: Vpp %d.%d, idx %x, IRQ %d", p_drv->name,
Dominik Brodowski1cc745d2010-08-01 11:21:14 +0200297 p_dev->vpp/10, p_dev->vpp%10, p_dev->config_index, p_dev->irq);
298 dev_dbg(dev, "resources: ioport %pR %pR iomem %pR %pR %pR",
299 p_dev->resource[0], p_dev->resource[1], p_dev->resource[2],
300 p_dev->resource[3], p_dev->resource[4]);
Dominik Brodowski82d56e62006-01-27 19:15:02 +0100301
Dominik Brodowski00ce99f2010-01-16 09:14:11 +0100302 mutex_lock(&s->ops_mutex);
Dominik Brodowskice3f9d72010-07-21 14:43:05 +0200303 if ((s->pcmcia_pfc) &&
Dominik Brodowski82d56e62006-01-27 19:15:02 +0100304 (p_dev->socket->device_count == 1) && (p_dev->device_no == 0))
Dominik Brodowskiaa584ca2010-01-24 14:36:59 +0100305 pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY);
Dominik Brodowski00ce99f2010-01-16 09:14:11 +0100306 mutex_unlock(&s->ops_mutex);
Dominik Brodowskif8cfa612005-11-14 21:25:51 +0100307
Alan Coxcec5eb72008-09-22 15:58:14 +0100308put_module:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309 if (ret)
310 module_put(p_drv->owner);
Alan Coxcec5eb72008-09-22 15:58:14 +0100311put_dev:
Dominik Brodowskif8cfa612005-11-14 21:25:51 +0100312 if (ret)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313 put_device(dev);
Dominik Brodowski9fea84f2009-12-07 22:11:45 +0100314 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315}
316
317
Dominik Brodowskid6ff5a82006-02-05 09:51:34 +0100318/*
319 * Removes a PCMCIA card from the device tree and socket list.
320 */
321static void pcmcia_card_remove(struct pcmcia_socket *s, struct pcmcia_device *leftover)
322{
323 struct pcmcia_device *p_dev;
324 struct pcmcia_device *tmp;
Dominik Brodowskid6ff5a82006-02-05 09:51:34 +0100325
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200326 dev_dbg(leftover ? &leftover->dev : &s->dev,
Dominik Brodowskiac449d62008-08-02 18:33:56 +0200327 "pcmcia_card_remove(%d) %s\n", s->sock,
328 leftover ? leftover->devname : "");
Dominik Brodowskid6ff5a82006-02-05 09:51:34 +0100329
Dominik Brodowski00ce99f2010-01-16 09:14:11 +0100330 mutex_lock(&s->ops_mutex);
Dominik Brodowskid6ff5a82006-02-05 09:51:34 +0100331 if (!leftover)
332 s->device_count = 0;
333 else
334 s->device_count = 1;
Dominik Brodowski00ce99f2010-01-16 09:14:11 +0100335 mutex_unlock(&s->ops_mutex);
Dominik Brodowskid6ff5a82006-02-05 09:51:34 +0100336
337 /* unregister all pcmcia_devices registered with this socket, except leftover */
338 list_for_each_entry_safe(p_dev, tmp, &s->devices_list, socket_device_list) {
339 if (p_dev == leftover)
340 continue;
341
Dominik Brodowski00ce99f2010-01-16 09:14:11 +0100342 mutex_lock(&s->ops_mutex);
Dominik Brodowskid6ff5a82006-02-05 09:51:34 +0100343 list_del(&p_dev->socket_device_list);
Dominik Brodowski00ce99f2010-01-16 09:14:11 +0100344 mutex_unlock(&s->ops_mutex);
Dominik Brodowskid6ff5a82006-02-05 09:51:34 +0100345
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200346 dev_dbg(&p_dev->dev, "unregistering device\n");
Dominik Brodowskid6ff5a82006-02-05 09:51:34 +0100347 device_unregister(&p_dev->dev);
348 }
349
350 return;
351}
352
Dominik Brodowski9fea84f2009-12-07 22:11:45 +0100353static int pcmcia_device_remove(struct device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700354{
355 struct pcmcia_device *p_dev;
356 struct pcmcia_driver *p_drv;
Dominik Brodowskicc3b4862005-11-14 21:23:14 +0100357 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359 p_dev = to_pcmcia_dev(dev);
360 p_drv = to_pcmcia_drv(dev->driver);
Dominik Brodowskid6ff5a82006-02-05 09:51:34 +0100361
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200362 dev_dbg(dev, "removing device\n");
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200363
Dominik Brodowskid6ff5a82006-02-05 09:51:34 +0100364 /* If we're removing the primary module driving a
365 * pseudo multi-function card, we need to unbind
366 * all devices
367 */
Dominik Brodowskice3f9d72010-07-21 14:43:05 +0200368 if ((p_dev->socket->pcmcia_pfc) &&
Dominik Brodowskie6e4f392010-01-16 01:34:06 +0100369 (p_dev->socket->device_count > 0) &&
Dominik Brodowskid6ff5a82006-02-05 09:51:34 +0100370 (p_dev->device_no == 0))
371 pcmcia_card_remove(p_dev->socket, p_dev);
372
373 /* detach the "instance" */
Dominik Brodowskif3990712005-11-14 21:25:23 +0100374 if (!p_drv)
375 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376
Dominik Brodowskif3990712005-11-14 21:25:23 +0100377 if (p_drv->remove)
Dominik Brodowski9fea84f2009-12-07 22:11:45 +0100378 p_drv->remove(p_dev);
Dominik Brodowskicc3b4862005-11-14 21:23:14 +0100379
Dominik Brodowskif3990712005-11-14 21:25:23 +0100380 /* check for proper unloading */
Dominik Brodowskie2d40962006-03-02 00:09:29 +0100381 if (p_dev->_irq || p_dev->_io || p_dev->_locked)
Dominik Brodowskiac449d62008-08-02 18:33:56 +0200382 dev_printk(KERN_INFO, dev,
383 "pcmcia: driver %s did not release config properly\n",
Dominik Brodowski2e9b9812010-08-08 11:36:26 +0200384 p_drv->name);
Dominik Brodowskif3990712005-11-14 21:25:23 +0100385
386 for (i = 0; i < MAX_WIN; i++)
Dominik Brodowskie2d40962006-03-02 00:09:29 +0100387 if (p_dev->_win & CLIENT_WIN_REQ(i))
Dominik Brodowskiac449d62008-08-02 18:33:56 +0200388 dev_printk(KERN_INFO, dev,
389 "pcmcia: driver %s did not release window properly\n",
Dominik Brodowski2e9b9812010-08-08 11:36:26 +0200390 p_drv->name);
Dominik Brodowskicc3b4862005-11-14 21:23:14 +0100391
Dominik Brodowskif3990712005-11-14 21:25:23 +0100392 /* references from pcmcia_probe_device */
393 pcmcia_put_dev(p_dev);
394 module_put(p_drv->owner);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395
396 return 0;
397}
398
399
Dominik Brodowskicc3b4862005-11-14 21:23:14 +0100400/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401 * pcmcia_device_query -- determine information about a pcmcia device
402 */
403static int pcmcia_device_query(struct pcmcia_device *p_dev)
404{
405 cistpl_manfid_t manf_id;
406 cistpl_funcid_t func_id;
Ingo Molnar76fa82f2005-09-09 13:03:21 -0700407 cistpl_vers_1_t *vers1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408 unsigned int i;
409
Ingo Molnar76fa82f2005-09-09 13:03:21 -0700410 vers1 = kmalloc(sizeof(*vers1), GFP_KERNEL);
411 if (!vers1)
412 return -ENOMEM;
413
Dominik Brodowski84897fc2009-10-18 23:51:09 +0200414 if (!pccard_read_tuple(p_dev->socket, BIND_FN_ALL,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700415 CISTPL_MANFID, &manf_id)) {
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100416 mutex_lock(&p_dev->socket->ops_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417 p_dev->manf_id = manf_id.manf;
418 p_dev->card_id = manf_id.card;
419 p_dev->has_manf_id = 1;
420 p_dev->has_card_id = 1;
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100421 mutex_unlock(&p_dev->socket->ops_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422 }
423
424 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
425 CISTPL_FUNCID, &func_id)) {
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100426 mutex_lock(&p_dev->socket->ops_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427 p_dev->func_id = func_id.func;
428 p_dev->has_func_id = 1;
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100429 mutex_unlock(&p_dev->socket->ops_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430 } else {
431 /* rule of thumb: cards with no FUNCID, but with
432 * common memory device geometry information, are
433 * probably memory cards (from pcmcia-cs) */
Ingo Molnar76fa82f2005-09-09 13:03:21 -0700434 cistpl_device_geo_t *devgeo;
435
436 devgeo = kmalloc(sizeof(*devgeo), GFP_KERNEL);
437 if (!devgeo) {
438 kfree(vers1);
439 return -ENOMEM;
440 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
Ingo Molnar76fa82f2005-09-09 13:03:21 -0700442 CISTPL_DEVICE_GEO, devgeo)) {
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200443 dev_dbg(&p_dev->dev,
Dominik Brodowskiac449d62008-08-02 18:33:56 +0200444 "mem device geometry probably means "
445 "FUNCID_MEMORY\n");
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100446 mutex_lock(&p_dev->socket->ops_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447 p_dev->func_id = CISTPL_FUNCID_MEMORY;
448 p_dev->has_func_id = 1;
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100449 mutex_unlock(&p_dev->socket->ops_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450 }
Ingo Molnar76fa82f2005-09-09 13:03:21 -0700451 kfree(devgeo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452 }
453
Dominik Brodowski84897fc2009-10-18 23:51:09 +0200454 if (!pccard_read_tuple(p_dev->socket, BIND_FN_ALL, CISTPL_VERS_1,
Ingo Molnar76fa82f2005-09-09 13:03:21 -0700455 vers1)) {
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100456 mutex_lock(&p_dev->socket->ops_mutex);
Dominik Brodowskic5e09522009-10-19 00:04:25 +0200457 for (i = 0; i < min_t(unsigned int, 4, vers1->ns); i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458 char *tmp;
459 unsigned int length;
Dominik Brodowski44961a02010-01-24 12:11:02 +0100460 char *new;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461
Ingo Molnar76fa82f2005-09-09 13:03:21 -0700462 tmp = vers1->str + vers1->ofs[i];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463
464 length = strlen(tmp) + 1;
Janos Farkas6e3d4f22006-03-31 01:04:57 +0200465 if ((length < 2) || (length > 255))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466 continue;
467
Dominik Brodowski44961a02010-01-24 12:11:02 +0100468 new = kmalloc(sizeof(char) * length, GFP_KERNEL);
469 if (!new)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470 continue;
471
Dominik Brodowski44961a02010-01-24 12:11:02 +0100472 new = strncpy(new, tmp, length);
473
474 tmp = p_dev->prod_id[i];
475 p_dev->prod_id[i] = new;
476 kfree(tmp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700477 }
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100478 mutex_unlock(&p_dev->socket->ops_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700479 }
480
Ingo Molnar76fa82f2005-09-09 13:03:21 -0700481 kfree(vers1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700482 return 0;
483}
484
485
Dominik Brodowski5716d412010-07-11 09:51:14 +0200486static struct pcmcia_device *pcmcia_device_add(struct pcmcia_socket *s,
487 unsigned int function)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700488{
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100489 struct pcmcia_device *p_dev, *tmp_dev;
Dominik Brodowski44961a02010-01-24 12:11:02 +0100490 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700491
Dominik Brodowskidc109492005-06-27 16:28:50 -0700492 s = pcmcia_get_socket(s);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700493 if (!s)
494 return NULL;
495
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200496 pr_debug("adding device to %d, function %d\n", s->sock, function);
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200497
Dominik Brodowski8084b372005-12-11 21:18:26 +0100498 p_dev = kzalloc(sizeof(struct pcmcia_device), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700499 if (!p_dev)
500 goto err_put;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501
Dominik Brodowski00ce99f2010-01-16 09:14:11 +0100502 mutex_lock(&s->ops_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503 p_dev->device_no = (s->device_count++);
Dominik Brodowski00ce99f2010-01-16 09:14:11 +0100504 mutex_unlock(&s->ops_mutex);
Dominik Brodowskie6e4f392010-01-16 01:34:06 +0100505
Dominik Brodowski7d7ba8d2010-03-24 10:49:14 +0100506 /* max of 2 PFC devices */
507 if ((p_dev->device_no >= 2) && (function == 0))
508 goto err_free;
509
510 /* max of 4 devices overall */
511 if (p_dev->device_no >= 4)
Dominik Brodowskie6e4f392010-01-16 01:34:06 +0100512 goto err_free;
513
514 p_dev->socket = s;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700515 p_dev->func = function;
516
517 p_dev->dev.bus = &pcmcia_bus_type;
Greg Kroah-Hartman87373312006-09-12 17:00:10 +0200518 p_dev->dev.parent = s->dev.parent;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700519 p_dev->dev.release = pcmcia_release_dev;
James Bottomley43d9f7f2007-10-16 01:23:58 -0700520 /* by default don't allow DMA */
521 p_dev->dma_mask = DMA_MASK_NONE;
522 p_dev->dev.dma_mask = &p_dev->dma_mask;
Kay Sievers25096982008-11-01 11:46:06 +0100523 dev_set_name(&p_dev->dev, "%d.%d", p_dev->socket->sock, p_dev->device_no);
524 if (!dev_name(&p_dev->dev))
525 goto err_free;
526 p_dev->devname = kasprintf(GFP_KERNEL, "pcmcia%s", dev_name(&p_dev->dev));
Brice Goglinbd65a682005-09-09 13:03:29 -0700527 if (!p_dev->devname)
528 goto err_free;
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200529 dev_dbg(&p_dev->dev, "devname is %s\n", p_dev->devname);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530
Dominik Brodowski00ce99f2010-01-16 09:14:11 +0100531 mutex_lock(&s->ops_mutex);
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100532
533 /*
534 * p_dev->function_config must be the same for all card functions.
Dominik Brodowskia60f22c2010-03-07 09:22:51 +0100535 * Note that this is serialized by ops_mutex, so that only one
536 * such struct will be created.
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100537 */
Dominik Brodowski9fea84f2009-12-07 22:11:45 +0100538 list_for_each_entry(tmp_dev, &s->devices_list, socket_device_list)
539 if (p_dev->func == tmp_dev->func) {
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100540 p_dev->function_config = tmp_dev->function_config;
Komuro3e879f62008-11-02 19:33:24 +0900541 p_dev->irq = tmp_dev->irq;
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100542 kref_get(&p_dev->function_config->ref);
543 }
544
545 /* Add to the list in pcmcia_bus_socket */
Komuro6171b882006-04-02 17:39:27 +0900546 list_add(&p_dev->socket_device_list, &s->devices_list);
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100547
Dominik Brodowski6f0f38c2010-04-08 20:33:16 +0200548 if (pcmcia_setup_irq(p_dev))
549 dev_warn(&p_dev->dev,
550 "IRQ setup failed -- device might not work\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700551
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100552 if (!p_dev->function_config) {
Dominik Brodowski2ce49052010-07-24 13:14:44 +0200553 config_t *c;
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200554 dev_dbg(&p_dev->dev, "creating config_t\n");
Dominik Brodowski2ce49052010-07-24 13:14:44 +0200555 c = kzalloc(sizeof(struct config_t), GFP_KERNEL);
556 if (!c) {
Dominik Brodowski6f0f38c2010-04-08 20:33:16 +0200557 mutex_unlock(&s->ops_mutex);
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100558 goto err_unreg;
Dominik Brodowski6f0f38c2010-04-08 20:33:16 +0200559 }
Dominik Brodowski2ce49052010-07-24 13:14:44 +0200560 p_dev->function_config = c;
561 kref_init(&c->ref);
562 for (i = 0; i < MAX_IO_WIN; i++) {
Dominik Brodowskiad0c7be2010-07-25 13:10:22 +0200563 c->io[i].name = p_dev->devname;
Dominik Brodowski2ce49052010-07-24 13:14:44 +0200564 c->io[i].flags = IORESOURCE_IO;
565 }
Dominik Brodowski0ca724d2010-07-24 19:03:02 +0200566 for (i = 0; i< MAX_WIN; i++) {
Dominik Brodowskiad0c7be2010-07-25 13:10:22 +0200567 c->mem[i].name = p_dev->devname;
Dominik Brodowski0ca724d2010-07-24 19:03:02 +0200568 c->mem[i].flags = IORESOURCE_MEM;
569 }
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100570 }
Dominik Brodowski2ce49052010-07-24 13:14:44 +0200571 for (i = 0; i < MAX_IO_WIN; i++)
572 p_dev->resource[i] = &p_dev->function_config->io[i];
Dominik Brodowski0ca724d2010-07-24 19:03:02 +0200573 for (; i < (MAX_IO_WIN + MAX_WIN); i++)
574 p_dev->resource[i] = &p_dev->function_config->mem[i-MAX_IO_WIN];
Dominik Brodowski2ce49052010-07-24 13:14:44 +0200575
Dominik Brodowski6f0f38c2010-04-08 20:33:16 +0200576 mutex_unlock(&s->ops_mutex);
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100577
Dominik Brodowskiac449d62008-08-02 18:33:56 +0200578 dev_printk(KERN_NOTICE, &p_dev->dev,
Dominik Brodowski6f0f38c2010-04-08 20:33:16 +0200579 "pcmcia: registering new device %s (IRQ: %d)\n",
Dominik Brodowskieb141202010-03-07 12:21:16 +0100580 p_dev->devname, p_dev->irq);
Dominik Brodowski807277c2005-11-12 23:34:06 +0100581
Dominik Brodowski1ad275e2005-06-27 16:28:06 -0700582 pcmcia_device_query(p_dev);
583
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100584 if (device_register(&p_dev->dev))
585 goto err_unreg;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700586
Linus Torvalds1da177e2005-04-16 15:20:36 -0700587 return p_dev;
588
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100589 err_unreg:
Dominik Brodowski00ce99f2010-01-16 09:14:11 +0100590 mutex_lock(&s->ops_mutex);
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100591 list_del(&p_dev->socket_device_list);
Dominik Brodowski00ce99f2010-01-16 09:14:11 +0100592 mutex_unlock(&s->ops_mutex);
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100593
Linus Torvalds1da177e2005-04-16 15:20:36 -0700594 err_free:
Dominik Brodowski00ce99f2010-01-16 09:14:11 +0100595 mutex_lock(&s->ops_mutex);
Dominik Brodowskie6e4f392010-01-16 01:34:06 +0100596 s->device_count--;
Dominik Brodowski00ce99f2010-01-16 09:14:11 +0100597 mutex_unlock(&s->ops_mutex);
Dominik Brodowskie6e4f392010-01-16 01:34:06 +0100598
Dominik Brodowski44961a02010-01-24 12:11:02 +0100599 for (i = 0; i < 4; i++)
600 kfree(p_dev->prod_id[i]);
Brice Goglinbd65a682005-09-09 13:03:29 -0700601 kfree(p_dev->devname);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700602 kfree(p_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700603 err_put:
Dominik Brodowskidc109492005-06-27 16:28:50 -0700604 pcmcia_put_socket(s);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605
606 return NULL;
607}
608
609
610static int pcmcia_card_add(struct pcmcia_socket *s)
611{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700612 cistpl_longlink_mfc_t mfc;
Dominik Brodowskic5081d52008-06-19 20:12:34 +0200613 unsigned int no_funcs, i, no_chains;
Dominik Brodowskicfe5d802010-01-17 19:31:45 +0100614 int ret = -EAGAIN;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700615
Dominik Brodowskicfe5d802010-01-17 19:31:45 +0100616 mutex_lock(&s->ops_mutex);
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200617 if (!(s->resource_setup_done)) {
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200618 dev_dbg(&s->dev,
Dominik Brodowskiac449d62008-08-02 18:33:56 +0200619 "no resources available, delaying card_add\n");
Dominik Brodowskicfe5d802010-01-17 19:31:45 +0100620 mutex_unlock(&s->ops_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621 return -EAGAIN; /* try again, but later... */
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200622 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700623
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200624 if (pcmcia_validate_mem(s)) {
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200625 dev_dbg(&s->dev, "validating mem resources failed, "
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200626 "delaying card_add\n");
Dominik Brodowskicfe5d802010-01-17 19:31:45 +0100627 mutex_unlock(&s->ops_mutex);
Dominik Brodowskide759142005-09-28 19:41:56 +0200628 return -EAGAIN; /* try again, but later... */
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200629 }
Dominik Brodowskicfe5d802010-01-17 19:31:45 +0100630 mutex_unlock(&s->ops_mutex);
Dominik Brodowskide759142005-09-28 19:41:56 +0200631
Dominik Brodowski84897fc2009-10-18 23:51:09 +0200632 ret = pccard_validate_cis(s, &no_chains);
Dominik Brodowskic5081d52008-06-19 20:12:34 +0200633 if (ret || !no_chains) {
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200634 dev_dbg(&s->dev, "invalid CIS or invalid resources\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700635 return -ENODEV;
636 }
637
638 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc))
639 no_funcs = mfc.nfn;
640 else
641 no_funcs = 1;
Dominik Brodowski1d2c9042006-11-06 21:52:16 -0500642 s->functions = no_funcs;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700643
Dominik Brodowski9fea84f2009-12-07 22:11:45 +0100644 for (i = 0; i < no_funcs; i++)
Dominik Brodowskidc109492005-06-27 16:28:50 -0700645 pcmcia_device_add(s, i);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700646
Dominik Brodowski9fea84f2009-12-07 22:11:45 +0100647 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700648}
649
650
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100651static int pcmcia_requery_callback(struct device *dev, void * _data)
Dominik Brodowskiff1fa9e2005-06-27 16:28:09 -0700652{
Dominik Brodowskie2f0b532005-06-27 16:28:17 -0700653 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200654 if (!p_dev->dev.driver) {
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200655 dev_dbg(dev, "update device information\n");
Dominik Brodowskie2f0b532005-06-27 16:28:17 -0700656 pcmcia_device_query(p_dev);
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200657 }
Dominik Brodowskie2f0b532005-06-27 16:28:17 -0700658
659 return 0;
660}
661
Dominik Brodowskiaa584ca2010-01-24 14:36:59 +0100662
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100663static void pcmcia_requery(struct pcmcia_socket *s)
Dominik Brodowskie2f0b532005-06-27 16:28:17 -0700664{
Dominik Brodowski04de0812010-04-20 14:49:01 +0200665 int has_pfc;
Dominik Brodowskie2f0b532005-06-27 16:28:17 -0700666
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100667 if (s->functions == 0) {
668 pcmcia_card_add(s);
669 return;
Dominik Brodowskie2f0b532005-06-27 16:28:17 -0700670 }
671
672 /* some device information might have changed because of a CIS
673 * update or because we can finally read it correctly... so
674 * determine it again, overwriting old values if necessary. */
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100675 bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery_callback);
676
677 /* if the CIS changed, we need to check whether the number of
678 * functions changed. */
679 if (s->fake_cis) {
680 int old_funcs, new_funcs;
681 cistpl_longlink_mfc_t mfc;
682
683 /* does this cis override add or remove functions? */
684 old_funcs = s->functions;
685
686 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC,
687 &mfc))
688 new_funcs = mfc.nfn;
689 else
690 new_funcs = 1;
Dominik Brodowskib1095af2010-04-08 20:10:21 +0200691 if (old_funcs != new_funcs) {
692 /* we need to re-start */
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100693 pcmcia_card_remove(s, NULL);
Dominik Brodowskib83156b2010-06-07 18:31:17 +0200694 s->functions = 0;
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100695 pcmcia_card_add(s);
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100696 }
697 }
Dominik Brodowskie2f0b532005-06-27 16:28:17 -0700698
Dominik Brodowskiaa584ca2010-01-24 14:36:59 +0100699 /* If the PCMCIA device consists of two pseudo devices,
700 * call pcmcia_device_add() -- which will fail if both
701 * devices are already registered. */
702 mutex_lock(&s->ops_mutex);
Dominik Brodowskice3f9d72010-07-21 14:43:05 +0200703 has_pfc = s->pcmcia_pfc;
Dominik Brodowskiaa584ca2010-01-24 14:36:59 +0100704 mutex_unlock(&s->ops_mutex);
705 if (has_pfc)
706 pcmcia_device_add(s, 0);
707
Dominik Brodowskie2f0b532005-06-27 16:28:17 -0700708 /* we re-scan all devices, not just the ones connected to this
709 * socket. This does not matter, though. */
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100710 if (bus_rescan_devices(&pcmcia_bus_type))
711 dev_warn(&s->dev, "rescanning the bus failed\n");
Dominik Brodowskiff1fa9e2005-06-27 16:28:09 -0700712}
Dominik Brodowski1ad275e2005-06-27 16:28:06 -0700713
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100714
Dominik Brodowski1d2c9042006-11-06 21:52:16 -0500715#ifdef CONFIG_PCMCIA_LOAD_CIS
716
717/**
718 * pcmcia_load_firmware - load CIS from userspace if device-provided is broken
Randy Dunlap78187862007-12-10 15:49:22 -0800719 * @dev: the pcmcia device which needs a CIS override
720 * @filename: requested filename in /lib/firmware/
Dominik Brodowski1d2c9042006-11-06 21:52:16 -0500721 *
722 * This uses the in-kernel firmware loading mechanism to use a "fake CIS" if
723 * the one provided by the card is broken. The firmware files reside in
724 * /lib/firmware/ in userspace.
725 */
726static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
727{
728 struct pcmcia_socket *s = dev->socket;
729 const struct firmware *fw;
Dominik Brodowski1d2c9042006-11-06 21:52:16 -0500730 int ret = -ENOMEM;
Dominik Brodowskib1095af2010-04-08 20:10:21 +0200731 cistpl_longlink_mfc_t mfc;
732 int old_funcs, new_funcs = 1;
Dominik Brodowski1d2c9042006-11-06 21:52:16 -0500733
734 if (!filename)
735 return -EINVAL;
736
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200737 dev_dbg(&dev->dev, "trying to load CIS file %s\n", filename);
Dominik Brodowski1d2c9042006-11-06 21:52:16 -0500738
Samuel Ortized62ace2009-05-27 00:49:35 +0200739 if (request_firmware(&fw, filename, &dev->dev) == 0) {
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200740 if (fw->size >= CISTPL_MAX_CIS_SIZE) {
741 ret = -EINVAL;
Dominik Brodowskiac449d62008-08-02 18:33:56 +0200742 dev_printk(KERN_ERR, &dev->dev,
743 "pcmcia: CIS override is too big\n");
Dominik Brodowski1d2c9042006-11-06 21:52:16 -0500744 goto release;
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200745 }
Dominik Brodowski1d2c9042006-11-06 21:52:16 -0500746
Dominik Brodowski53efec92008-07-28 19:44:05 +0200747 if (!pcmcia_replace_cis(s, fw->data, fw->size))
Dominik Brodowski1d2c9042006-11-06 21:52:16 -0500748 ret = 0;
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200749 else {
Dominik Brodowskiac449d62008-08-02 18:33:56 +0200750 dev_printk(KERN_ERR, &dev->dev,
751 "pcmcia: CIS override failed\n");
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200752 goto release;
753 }
754
Dominik Brodowskib1095af2010-04-08 20:10:21 +0200755 /* we need to re-start if the number of functions changed */
756 old_funcs = s->functions;
757 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC,
758 &mfc))
759 new_funcs = mfc.nfn;
760
761 if (old_funcs != new_funcs)
762 ret = -EBUSY;
Dominik Brodowski1d2c9042006-11-06 21:52:16 -0500763
764 /* update information */
765 pcmcia_device_query(dev);
766
Dominik Brodowskiaa584ca2010-01-24 14:36:59 +0100767 /* requery (as number of functions might have changed) */
768 pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY);
Dominik Brodowski1d2c9042006-11-06 21:52:16 -0500769 }
770 release:
771 release_firmware(fw);
772
Dominik Brodowski9fea84f2009-12-07 22:11:45 +0100773 return ret;
Dominik Brodowski1d2c9042006-11-06 21:52:16 -0500774}
775
776#else /* !CONFIG_PCMCIA_LOAD_CIS */
777
778static inline int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
779{
780 return -ENODEV;
781}
782
783#endif
784
785
Dominik Brodowski1ad275e2005-06-27 16:28:06 -0700786static inline int pcmcia_devmatch(struct pcmcia_device *dev,
Joe Perchese9fb13b2011-05-03 19:29:00 -0700787 const struct pcmcia_device_id *did)
Dominik Brodowski1ad275e2005-06-27 16:28:06 -0700788{
789 if (did->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID) {
790 if ((!dev->has_manf_id) || (dev->manf_id != did->manf_id))
791 return 0;
792 }
793
794 if (did->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID) {
795 if ((!dev->has_card_id) || (dev->card_id != did->card_id))
796 return 0;
797 }
798
799 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION) {
800 if (dev->func != did->function)
801 return 0;
802 }
803
804 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1) {
805 if (!dev->prod_id[0])
806 return 0;
807 if (strcmp(did->prod_id[0], dev->prod_id[0]))
808 return 0;
809 }
810
811 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2) {
812 if (!dev->prod_id[1])
813 return 0;
814 if (strcmp(did->prod_id[1], dev->prod_id[1]))
815 return 0;
816 }
817
818 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3) {
819 if (!dev->prod_id[2])
820 return 0;
821 if (strcmp(did->prod_id[2], dev->prod_id[2]))
822 return 0;
823 }
824
825 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4) {
826 if (!dev->prod_id[3])
827 return 0;
828 if (strcmp(did->prod_id[3], dev->prod_id[3]))
829 return 0;
830 }
831
832 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) {
Alexander Kurz83bf6f12010-04-25 13:44:35 +0400833 dev_dbg(&dev->dev, "this is a pseudo-multi-function device\n");
Dominik Brodowskiaa584ca2010-01-24 14:36:59 +0100834 mutex_lock(&dev->socket->ops_mutex);
Dominik Brodowskice3f9d72010-07-21 14:43:05 +0200835 dev->socket->pcmcia_pfc = 1;
Dominik Brodowskiaa584ca2010-01-24 14:36:59 +0100836 mutex_unlock(&dev->socket->ops_mutex);
Alexander Kurz83bf6f12010-04-25 13:44:35 +0400837 if (dev->device_no != did->device_no)
838 return 0;
Dominik Brodowski1ad275e2005-06-27 16:28:06 -0700839 }
840
841 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) {
Dominik Brodowski94a819f2010-01-17 18:31:34 +0100842 int ret;
843
Dominik Brodowski1ad275e2005-06-27 16:28:06 -0700844 if ((!dev->has_func_id) || (dev->func_id != did->func_id))
845 return 0;
846
847 /* if this is a pseudo-multi-function device,
848 * we need explicit matches */
Dominik Brodowskice3f9d72010-07-21 14:43:05 +0200849 if (dev->socket->pcmcia_pfc)
Dominik Brodowski1ad275e2005-06-27 16:28:06 -0700850 return 0;
851 if (dev->device_no)
852 return 0;
853
854 /* also, FUNC_ID matching needs to be activated by userspace
855 * after it has re-checked that there is no possible module
856 * with a prod_id/manf_id/card_id match.
857 */
Dominik Brodowski94a819f2010-01-17 18:31:34 +0100858 mutex_lock(&dev->socket->ops_mutex);
859 ret = dev->allow_func_id_match;
860 mutex_unlock(&dev->socket->ops_mutex);
861
862 if (!ret) {
863 dev_dbg(&dev->dev,
864 "skipping FUNC_ID match until userspace ACK\n");
Dominik Brodowski1ad275e2005-06-27 16:28:06 -0700865 return 0;
Dominik Brodowski94a819f2010-01-17 18:31:34 +0100866 }
Dominik Brodowski1ad275e2005-06-27 16:28:06 -0700867 }
868
Dominik Brodowskiea7b3882005-06-27 16:28:07 -0700869 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) {
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200870 dev_dbg(&dev->dev, "device needs a fake CIS\n");
Dominik Brodowskidaa95172005-06-27 16:28:14 -0700871 if (!dev->socket->fake_cis)
Dominik Brodowskib1095af2010-04-08 20:10:21 +0200872 if (pcmcia_load_firmware(dev, did->cisfile))
873 return 0;
Dominik Brodowskiea7b3882005-06-27 16:28:07 -0700874 }
875
Dominik Brodowskif602ff72005-06-27 16:28:09 -0700876 if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) {
877 int i;
Dominik Brodowski9fea84f2009-12-07 22:11:45 +0100878 for (i = 0; i < 4; i++)
Dominik Brodowskif602ff72005-06-27 16:28:09 -0700879 if (dev->prod_id[i])
880 return 0;
881 if (dev->has_manf_id || dev->has_card_id || dev->has_func_id)
882 return 0;
883 }
884
Dominik Brodowski1ad275e2005-06-27 16:28:06 -0700885 return 1;
886}
887
888
Dominik Brodowski9fea84f2009-12-07 22:11:45 +0100889static int pcmcia_bus_match(struct device *dev, struct device_driver *drv)
890{
891 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
892 struct pcmcia_driver *p_drv = to_pcmcia_drv(drv);
Joe Perchese9fb13b2011-05-03 19:29:00 -0700893 const struct pcmcia_device_id *did = p_drv->id_table;
Bernhard Walle6179b552007-05-06 14:48:44 -0700894 struct pcmcia_dynid *dynid;
895
896 /* match dynamic devices first */
Dominik Brodowski3f565232010-01-16 13:06:40 +0100897 mutex_lock(&p_drv->dynids.lock);
Bernhard Walle6179b552007-05-06 14:48:44 -0700898 list_for_each_entry(dynid, &p_drv->dynids.list, node) {
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200899 dev_dbg(dev, "trying to match to %s\n", drv->name);
Bernhard Walle6179b552007-05-06 14:48:44 -0700900 if (pcmcia_devmatch(p_dev, &dynid->id)) {
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200901 dev_dbg(dev, "matched to %s\n", drv->name);
Dominik Brodowski3f565232010-01-16 13:06:40 +0100902 mutex_unlock(&p_drv->dynids.lock);
Bernhard Walle6179b552007-05-06 14:48:44 -0700903 return 1;
904 }
905 }
Dominik Brodowski3f565232010-01-16 13:06:40 +0100906 mutex_unlock(&p_drv->dynids.lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700907
Dominik Brodowski1ad275e2005-06-27 16:28:06 -0700908 while (did && did->match_flags) {
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200909 dev_dbg(dev, "trying to match to %s\n", drv->name);
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200910 if (pcmcia_devmatch(p_dev, did)) {
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200911 dev_dbg(dev, "matched to %s\n", drv->name);
Dominik Brodowski1ad275e2005-06-27 16:28:06 -0700912 return 1;
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200913 }
Dominik Brodowski1ad275e2005-06-27 16:28:06 -0700914 did++;
915 }
916
Linus Torvalds1da177e2005-04-16 15:20:36 -0700917 return 0;
918}
919
Dominik Brodowski840c2ac2005-06-27 16:28:04 -0700920#ifdef CONFIG_HOTPLUG
921
Kay Sievers7eff2e72007-08-14 15:15:12 +0200922static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
Dominik Brodowski840c2ac2005-06-27 16:28:04 -0700923{
924 struct pcmcia_device *p_dev;
Kay Sievers7eff2e72007-08-14 15:15:12 +0200925 int i;
Dominik Brodowski840c2ac2005-06-27 16:28:04 -0700926 u32 hash[4] = { 0, 0, 0, 0};
927
928 if (!dev)
929 return -ENODEV;
930
931 p_dev = to_pcmcia_dev(dev);
932
933 /* calculate hashes */
Dominik Brodowski9fea84f2009-12-07 22:11:45 +0100934 for (i = 0; i < 4; i++) {
Dominik Brodowski840c2ac2005-06-27 16:28:04 -0700935 if (!p_dev->prod_id[i])
936 continue;
937 hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i]));
938 }
939
Kay Sievers7eff2e72007-08-14 15:15:12 +0200940 if (add_uevent_var(env, "SOCKET_NO=%u", p_dev->socket->sock))
Dominik Brodowski840c2ac2005-06-27 16:28:04 -0700941 return -ENOMEM;
942
Kay Sievers7eff2e72007-08-14 15:15:12 +0200943 if (add_uevent_var(env, "DEVICE_NO=%02X", p_dev->device_no))
Dominik Brodowski840c2ac2005-06-27 16:28:04 -0700944 return -ENOMEM;
945
Kay Sievers7eff2e72007-08-14 15:15:12 +0200946 if (add_uevent_var(env, "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
Kay Sievers312c0042005-11-16 09:00:00 +0100947 "pa%08Xpb%08Xpc%08Xpd%08X",
948 p_dev->has_manf_id ? p_dev->manf_id : 0,
949 p_dev->has_card_id ? p_dev->card_id : 0,
950 p_dev->has_func_id ? p_dev->func_id : 0,
951 p_dev->func,
952 p_dev->device_no,
953 hash[0],
954 hash[1],
955 hash[2],
956 hash[3]))
Dominik Brodowski840c2ac2005-06-27 16:28:04 -0700957 return -ENOMEM;
958
Dominik Brodowski840c2ac2005-06-27 16:28:04 -0700959 return 0;
960}
961
962#else
963
Kay Sievers7eff2e72007-08-14 15:15:12 +0200964static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
Dominik Brodowski840c2ac2005-06-27 16:28:04 -0700965{
966 return -ENODEV;
967}
968
969#endif
970
Alan Stern3f8df782007-07-12 16:57:22 -0400971/************************ runtime PM support ***************************/
972
973static int pcmcia_dev_suspend(struct device *dev, pm_message_t state);
974static int pcmcia_dev_resume(struct device *dev);
975
976static int runtime_suspend(struct device *dev)
977{
978 int rc;
979
Greg Kroah-Hartman8e9394c2010-02-17 10:57:05 -0800980 device_lock(dev);
Alan Stern3f8df782007-07-12 16:57:22 -0400981 rc = pcmcia_dev_suspend(dev, PMSG_SUSPEND);
Greg Kroah-Hartman8e9394c2010-02-17 10:57:05 -0800982 device_unlock(dev);
Alan Stern3f8df782007-07-12 16:57:22 -0400983 return rc;
984}
985
Dominik Brodowski933a8382009-12-29 18:21:39 +0100986static int runtime_resume(struct device *dev)
Alan Stern3f8df782007-07-12 16:57:22 -0400987{
988 int rc;
989
Greg Kroah-Hartman8e9394c2010-02-17 10:57:05 -0800990 device_lock(dev);
Alan Stern3f8df782007-07-12 16:57:22 -0400991 rc = pcmcia_dev_resume(dev);
Greg Kroah-Hartman8e9394c2010-02-17 10:57:05 -0800992 device_unlock(dev);
Dominik Brodowski933a8382009-12-29 18:21:39 +0100993 return rc;
Alan Stern3f8df782007-07-12 16:57:22 -0400994}
995
Linus Torvalds1da177e2005-04-16 15:20:36 -0700996/************************ per-device sysfs output ***************************/
997
998#define pcmcia_device_attr(field, test, format) \
Yani Ioannoue404e272005-05-17 06:42:58 -0400999static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \
Linus Torvalds1da177e2005-04-16 15:20:36 -07001000{ \
1001 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
Dominik Brodowski9fea84f2009-12-07 22:11:45 +01001002 return p_dev->test ? sprintf(buf, format, p_dev->field) : -ENODEV; \
Linus Torvalds1da177e2005-04-16 15:20:36 -07001003}
1004
1005#define pcmcia_device_stringattr(name, field) \
Yani Ioannoue404e272005-05-17 06:42:58 -04001006static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \
Linus Torvalds1da177e2005-04-16 15:20:36 -07001007{ \
1008 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
Dominik Brodowski9fea84f2009-12-07 22:11:45 +01001009 return p_dev->field ? sprintf(buf, "%s\n", p_dev->field) : -ENODEV; \
Linus Torvalds1da177e2005-04-16 15:20:36 -07001010}
1011
1012pcmcia_device_attr(func, socket, "0x%02x\n");
1013pcmcia_device_attr(func_id, has_func_id, "0x%02x\n");
1014pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n");
1015pcmcia_device_attr(card_id, has_card_id, "0x%04x\n");
1016pcmcia_device_stringattr(prod_id1, prod_id[0]);
1017pcmcia_device_stringattr(prod_id2, prod_id[1]);
1018pcmcia_device_stringattr(prod_id3, prod_id[2]);
1019pcmcia_device_stringattr(prod_id4, prod_id[3]);
1020
Dominik Brodowski8f677ea2010-07-25 11:10:29 +02001021static ssize_t pcmcia_show_resources(struct device *dev,
1022 struct device_attribute *attr, char *buf)
1023{
1024 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1025 char *str = buf;
1026 int i;
1027
1028 for (i = 0; i < PCMCIA_NUM_RESOURCES; i++)
1029 str += sprintf(str, "%pr\n", p_dev->resource[i]);
1030
1031 return str - buf;
1032}
Dominik Brodowskidb1019c2006-01-10 19:19:37 +01001033
1034static ssize_t pcmcia_show_pm_state(struct device *dev, struct device_attribute *attr, char *buf)
1035{
1036 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1037
Dominik Brodowskif6fbe012006-01-20 15:10:23 +01001038 if (p_dev->suspended)
Dominik Brodowskidb1019c2006-01-10 19:19:37 +01001039 return sprintf(buf, "off\n");
1040 else
1041 return sprintf(buf, "on\n");
1042}
1043
1044static ssize_t pcmcia_store_pm_state(struct device *dev, struct device_attribute *attr,
1045 const char *buf, size_t count)
1046{
1047 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1048 int ret = 0;
1049
Dominik Brodowski9fea84f2009-12-07 22:11:45 +01001050 if (!count)
1051 return -EINVAL;
Dominik Brodowskidb1019c2006-01-10 19:19:37 +01001052
Dominik Brodowskif6fbe012006-01-20 15:10:23 +01001053 if ((!p_dev->suspended) && !strncmp(buf, "off", 3))
Alan Stern3f8df782007-07-12 16:57:22 -04001054 ret = runtime_suspend(dev);
Dominik Brodowskif6fbe012006-01-20 15:10:23 +01001055 else if (p_dev->suspended && !strncmp(buf, "on", 2))
Dominik Brodowski933a8382009-12-29 18:21:39 +01001056 ret = runtime_resume(dev);
Dominik Brodowskidb1019c2006-01-10 19:19:37 +01001057
1058 return ret ? ret : count;
1059}
1060
1061
Dominik Brodowski37045112005-06-30 02:58:47 -07001062static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
Dominik Brodowski3248ff42005-06-27 16:29:01 -07001063{
1064 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1065 int i;
1066 u32 hash[4] = { 0, 0, 0, 0};
Dominik Brodowskia5b55772005-06-27 16:28:10 -07001067
Dominik Brodowski3248ff42005-06-27 16:29:01 -07001068 /* calculate hashes */
Dominik Brodowski9fea84f2009-12-07 22:11:45 +01001069 for (i = 0; i < 4; i++) {
Dominik Brodowski3248ff42005-06-27 16:29:01 -07001070 if (!p_dev->prod_id[i])
1071 continue;
Dominik Brodowski9fea84f2009-12-07 22:11:45 +01001072 hash[i] = crc32(0, p_dev->prod_id[i],
1073 strlen(p_dev->prod_id[i]));
Dominik Brodowski3248ff42005-06-27 16:29:01 -07001074 }
1075 return sprintf(buf, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
1076 "pa%08Xpb%08Xpc%08Xpd%08X\n",
1077 p_dev->has_manf_id ? p_dev->manf_id : 0,
1078 p_dev->has_card_id ? p_dev->card_id : 0,
1079 p_dev->has_func_id ? p_dev->func_id : 0,
1080 p_dev->func, p_dev->device_no,
1081 hash[0], hash[1], hash[2], hash[3]);
1082}
1083
1084static ssize_t pcmcia_store_allow_func_id_match(struct device *dev,
1085 struct device_attribute *attr, const char *buf, size_t count)
Dominik Brodowskia5b55772005-06-27 16:28:10 -07001086{
1087 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
Dominik Brodowskidb1019c2006-01-10 19:19:37 +01001088
1089 if (!count)
1090 return -EINVAL;
Dominik Brodowskia5b55772005-06-27 16:28:10 -07001091
Dominik Brodowski94a819f2010-01-17 18:31:34 +01001092 mutex_lock(&p_dev->socket->ops_mutex);
Dominik Brodowskia5b55772005-06-27 16:28:10 -07001093 p_dev->allow_func_id_match = 1;
Dominik Brodowski94a819f2010-01-17 18:31:34 +01001094 mutex_unlock(&p_dev->socket->ops_mutex);
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +01001095 pcmcia_parse_uevents(p_dev->socket, PCMCIA_UEVENT_REQUERY);
Dominik Brodowskia5b55772005-06-27 16:28:10 -07001096
1097 return count;
1098}
1099
Linus Torvalds1da177e2005-04-16 15:20:36 -07001100static struct device_attribute pcmcia_dev_attrs[] = {
1101 __ATTR(function, 0444, func_show, NULL),
Dominik Brodowskidb1019c2006-01-10 19:19:37 +01001102 __ATTR(pm_state, 0644, pcmcia_show_pm_state, pcmcia_store_pm_state),
Dominik Brodowski8f677ea2010-07-25 11:10:29 +02001103 __ATTR(resources, 0444, pcmcia_show_resources, NULL),
Linus Torvalds1da177e2005-04-16 15:20:36 -07001104 __ATTR_RO(func_id),
1105 __ATTR_RO(manf_id),
1106 __ATTR_RO(card_id),
1107 __ATTR_RO(prod_id1),
1108 __ATTR_RO(prod_id2),
1109 __ATTR_RO(prod_id3),
1110 __ATTR_RO(prod_id4),
Dominik Brodowski3248ff42005-06-27 16:29:01 -07001111 __ATTR_RO(modalias),
Dominik Brodowskia5b55772005-06-27 16:28:10 -07001112 __ATTR(allow_func_id_match, 0200, NULL, pcmcia_store_allow_func_id_match),
Linus Torvalds1da177e2005-04-16 15:20:36 -07001113 __ATTR_NULL,
1114};
1115
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001116/* PM support, also needed for reset */
1117
Dominik Brodowski9fea84f2009-12-07 22:11:45 +01001118static int pcmcia_dev_suspend(struct device *dev, pm_message_t state)
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001119{
1120 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1121 struct pcmcia_driver *p_drv = NULL;
Dominik Brodowskif6fbe012006-01-20 15:10:23 +01001122 int ret = 0;
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001123
Dominik Brodowski94a819f2010-01-17 18:31:34 +01001124 mutex_lock(&p_dev->socket->ops_mutex);
1125 if (p_dev->suspended) {
1126 mutex_unlock(&p_dev->socket->ops_mutex);
David Brownelld6b4fa62008-02-04 22:27:37 -08001127 return 0;
Dominik Brodowski94a819f2010-01-17 18:31:34 +01001128 }
1129 p_dev->suspended = 1;
1130 mutex_unlock(&p_dev->socket->ops_mutex);
David Brownelld6b4fa62008-02-04 22:27:37 -08001131
Dominik Brodowskid50dbec2009-10-23 12:51:28 +02001132 dev_dbg(dev, "suspending\n");
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +02001133
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001134 if (dev->driver)
1135 p_drv = to_pcmcia_drv(dev->driver);
1136
Dominik Brodowskie2d40962006-03-02 00:09:29 +01001137 if (!p_drv)
1138 goto out;
1139
1140 if (p_drv->suspend) {
Dominik Brodowski8661bb52006-03-02 00:02:33 +01001141 ret = p_drv->suspend(p_dev);
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +02001142 if (ret) {
Dominik Brodowskiac449d62008-08-02 18:33:56 +02001143 dev_printk(KERN_ERR, dev,
1144 "pcmcia: device %s (driver %s) did "
1145 "not want to go to sleep (%d)\n",
Dominik Brodowski2e9b9812010-08-08 11:36:26 +02001146 p_dev->devname, p_drv->name, ret);
Dominik Brodowski94a819f2010-01-17 18:31:34 +01001147 mutex_lock(&p_dev->socket->ops_mutex);
1148 p_dev->suspended = 0;
1149 mutex_unlock(&p_dev->socket->ops_mutex);
Dominik Brodowskif6fbe012006-01-20 15:10:23 +01001150 goto out;
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +02001151 }
Dominik Brodowski8661bb52006-03-02 00:02:33 +01001152 }
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001153
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +02001154 if (p_dev->device_no == p_dev->func) {
Dominik Brodowskid50dbec2009-10-23 12:51:28 +02001155 dev_dbg(dev, "releasing configuration\n");
Dominik Brodowskie2d40962006-03-02 00:09:29 +01001156 pcmcia_release_configuration(p_dev);
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +02001157 }
Dominik Brodowskie2d40962006-03-02 00:09:29 +01001158
Dominik Brodowskif6fbe012006-01-20 15:10:23 +01001159 out:
Dominik Brodowskif6fbe012006-01-20 15:10:23 +01001160 return ret;
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001161}
1162
1163
Dominik Brodowski9fea84f2009-12-07 22:11:45 +01001164static int pcmcia_dev_resume(struct device *dev)
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001165{
1166 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
Dominik Brodowski9fea84f2009-12-07 22:11:45 +01001167 struct pcmcia_driver *p_drv = NULL;
Dominik Brodowskif6fbe012006-01-20 15:10:23 +01001168 int ret = 0;
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001169
Dominik Brodowski94a819f2010-01-17 18:31:34 +01001170 mutex_lock(&p_dev->socket->ops_mutex);
1171 if (!p_dev->suspended) {
1172 mutex_unlock(&p_dev->socket->ops_mutex);
David Brownelld6b4fa62008-02-04 22:27:37 -08001173 return 0;
Dominik Brodowski94a819f2010-01-17 18:31:34 +01001174 }
1175 p_dev->suspended = 0;
1176 mutex_unlock(&p_dev->socket->ops_mutex);
David Brownelld6b4fa62008-02-04 22:27:37 -08001177
Dominik Brodowskid50dbec2009-10-23 12:51:28 +02001178 dev_dbg(dev, "resuming\n");
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +02001179
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001180 if (dev->driver)
1181 p_drv = to_pcmcia_drv(dev->driver);
1182
Dominik Brodowskie2d40962006-03-02 00:09:29 +01001183 if (!p_drv)
1184 goto out;
1185
1186 if (p_dev->device_no == p_dev->func) {
Dominik Brodowskid50dbec2009-10-23 12:51:28 +02001187 dev_dbg(dev, "requesting configuration\n");
Dominik Brodowski1ac71e52010-07-29 19:27:09 +02001188 ret = pcmcia_enable_device(p_dev);
Dominik Brodowskie2d40962006-03-02 00:09:29 +01001189 if (ret)
1190 goto out;
Dominik Brodowski8661bb52006-03-02 00:02:33 +01001191 }
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001192
Dominik Brodowskie2d40962006-03-02 00:09:29 +01001193 if (p_drv->resume)
1194 ret = p_drv->resume(p_dev);
1195
Dominik Brodowskif6fbe012006-01-20 15:10:23 +01001196 out:
Dominik Brodowskif6fbe012006-01-20 15:10:23 +01001197 return ret;
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001198}
1199
1200
1201static int pcmcia_bus_suspend_callback(struct device *dev, void * _data)
1202{
1203 struct pcmcia_socket *skt = _data;
1204 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1205
Alan Stern3f8df782007-07-12 16:57:22 -04001206 if (p_dev->socket != skt || p_dev->suspended)
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001207 return 0;
1208
Alan Stern3f8df782007-07-12 16:57:22 -04001209 return runtime_suspend(dev);
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001210}
1211
1212static int pcmcia_bus_resume_callback(struct device *dev, void * _data)
1213{
1214 struct pcmcia_socket *skt = _data;
1215 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1216
Alan Stern3f8df782007-07-12 16:57:22 -04001217 if (p_dev->socket != skt || !p_dev->suspended)
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001218 return 0;
1219
Alan Stern3f8df782007-07-12 16:57:22 -04001220 runtime_resume(dev);
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001221
1222 return 0;
1223}
1224
1225static int pcmcia_bus_resume(struct pcmcia_socket *skt)
1226{
Dominik Brodowskid50dbec2009-10-23 12:51:28 +02001227 dev_dbg(&skt->dev, "resuming socket %d\n", skt->sock);
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001228 bus_for_each_dev(&pcmcia_bus_type, NULL, skt, pcmcia_bus_resume_callback);
1229 return 0;
1230}
1231
1232static int pcmcia_bus_suspend(struct pcmcia_socket *skt)
1233{
Dominik Brodowskid50dbec2009-10-23 12:51:28 +02001234 dev_dbg(&skt->dev, "suspending socket %d\n", skt->sock);
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001235 if (bus_for_each_dev(&pcmcia_bus_type, NULL, skt,
1236 pcmcia_bus_suspend_callback)) {
1237 pcmcia_bus_resume(skt);
1238 return -EIO;
1239 }
1240 return 0;
1241}
1242
Dominik Brodowski7b24e792010-07-11 10:26:53 +02001243static int pcmcia_bus_remove(struct pcmcia_socket *skt)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001244{
Dominik Brodowski7b24e792010-07-11 10:26:53 +02001245 atomic_set(&skt->present, 0);
1246 pcmcia_card_remove(skt, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001247
Dominik Brodowski7b24e792010-07-11 10:26:53 +02001248 mutex_lock(&skt->ops_mutex);
1249 destroy_cis_cache(skt);
1250 pcmcia_cleanup_irq(skt);
1251 mutex_unlock(&skt->ops_mutex);
1252
1253 return 0;
1254}
1255
1256static int pcmcia_bus_add(struct pcmcia_socket *skt)
1257{
1258 atomic_set(&skt->present, 1);
1259
1260 mutex_lock(&skt->ops_mutex);
Dominik Brodowskice3f9d72010-07-21 14:43:05 +02001261 skt->pcmcia_pfc = 0;
Dominik Brodowski7b24e792010-07-11 10:26:53 +02001262 destroy_cis_cache(skt); /* to be on the safe side... */
1263 mutex_unlock(&skt->ops_mutex);
1264
1265 pcmcia_card_add(skt);
1266
1267 return 0;
1268}
1269
1270static int pcmcia_bus_early_resume(struct pcmcia_socket *skt)
1271{
Russell King025e4ab2012-02-08 17:13:41 -08001272 if (!verify_cis_cache(skt))
Dominik Brodowski7b24e792010-07-11 10:26:53 +02001273 return 0;
Florin Malita16174062006-05-24 21:21:31 -04001274
Dominik Brodowski7b24e792010-07-11 10:26:53 +02001275 dev_dbg(&skt->dev, "cis mismatch - different card\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001276
Dominik Brodowski7b24e792010-07-11 10:26:53 +02001277 /* first, remove the card */
1278 pcmcia_bus_remove(skt);
Dominik Brodowskif8cfa612005-11-14 21:25:51 +01001279
Dominik Brodowski7b24e792010-07-11 10:26:53 +02001280 mutex_lock(&skt->ops_mutex);
1281 destroy_cis_cache(skt);
1282 kfree(skt->fake_cis);
1283 skt->fake_cis = NULL;
1284 skt->functions = 0;
1285 mutex_unlock(&skt->ops_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001286
Dominik Brodowski7b24e792010-07-11 10:26:53 +02001287 /* now, add the new card */
1288 pcmcia_bus_add(skt);
1289 return 0;
1290}
Dominik Brodowski88b060d2010-01-02 14:14:23 +01001291
Linus Torvalds1da177e2005-04-16 15:20:36 -07001292
Dominik Brodowski04de0812010-04-20 14:49:01 +02001293/*
1294 * NOTE: This is racy. There's no guarantee the card will still be
1295 * physically present, even if the call to this function returns
1296 * non-NULL. Furthermore, the device driver most likely is unbound
1297 * almost immediately, so the timeframe where pcmcia_dev_present
1298 * returns NULL is probably really really small.
1299 */
Dominik Brodowski9fea84f2009-12-07 22:11:45 +01001300struct pcmcia_device *pcmcia_dev_present(struct pcmcia_device *_p_dev)
Dominik Brodowski9940ec32006-03-05 11:04:33 +01001301{
1302 struct pcmcia_device *p_dev;
1303 struct pcmcia_device *ret = NULL;
1304
1305 p_dev = pcmcia_get_dev(_p_dev);
1306 if (!p_dev)
1307 return NULL;
1308
Dominik Brodowski04de0812010-04-20 14:49:01 +02001309 if (atomic_read(&p_dev->socket->present) != 0)
1310 ret = p_dev;
Dominik Brodowski9940ec32006-03-05 11:04:33 +01001311
Dominik Brodowski9940ec32006-03-05 11:04:33 +01001312 pcmcia_put_dev(p_dev);
1313 return ret;
1314}
1315EXPORT_SYMBOL(pcmcia_dev_present);
1316
1317
Dominik Brodowski90c6cdd2005-06-27 16:28:49 -07001318static struct pcmcia_callback pcmcia_bus_callback = {
1319 .owner = THIS_MODULE,
Dominik Brodowski7b24e792010-07-11 10:26:53 +02001320 .add = pcmcia_bus_add,
1321 .remove = pcmcia_bus_remove,
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +01001322 .requery = pcmcia_requery,
Dominik Brodowski6e7b51a2010-01-06 13:57:43 +01001323 .validate = pccard_validate_cis,
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001324 .suspend = pcmcia_bus_suspend,
Dominik Brodowski7b24e792010-07-11 10:26:53 +02001325 .early_resume = pcmcia_bus_early_resume,
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001326 .resume = pcmcia_bus_resume,
Dominik Brodowski90c6cdd2005-06-27 16:28:49 -07001327};
1328
Greg Kroah-Hartman87373312006-09-12 17:00:10 +02001329static int __devinit pcmcia_bus_add_socket(struct device *dev,
Dmitry Torokhovd8539d82005-09-15 02:01:36 -05001330 struct class_interface *class_intf)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001331{
Greg Kroah-Hartman87373312006-09-12 17:00:10 +02001332 struct pcmcia_socket *socket = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001333 int ret;
1334
Dominik Brodowskidc109492005-06-27 16:28:50 -07001335 socket = pcmcia_get_socket(socket);
1336 if (!socket) {
Dominik Brodowskiac449d62008-08-02 18:33:56 +02001337 dev_printk(KERN_ERR, dev,
1338 "PCMCIA obtaining reference to socket failed\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001339 return -ENODEV;
1340 }
1341
Dominik Brodowski6e7b51a2010-01-06 13:57:43 +01001342 ret = sysfs_create_bin_file(&dev->kobj, &pccard_cis_attr);
1343 if (ret) {
1344 dev_printk(KERN_ERR, dev, "PCMCIA registration failed\n");
1345 pcmcia_put_socket(socket);
1346 return ret;
1347 }
1348
Dominik Brodowskidc109492005-06-27 16:28:50 -07001349 INIT_LIST_HEAD(&socket->devices_list);
Dominik Brodowskice3f9d72010-07-21 14:43:05 +02001350 socket->pcmcia_pfc = 0;
Dominik Brodowskidc109492005-06-27 16:28:50 -07001351 socket->device_count = 0;
Dominik Brodowskie4f1ac22010-06-19 14:33:56 +02001352 atomic_set(&socket->present, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001353
Dominik Brodowski90c6cdd2005-06-27 16:28:49 -07001354 ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001355 if (ret) {
Dominik Brodowskiac449d62008-08-02 18:33:56 +02001356 dev_printk(KERN_ERR, dev, "PCMCIA registration failed\n");
Dominik Brodowskidc109492005-06-27 16:28:50 -07001357 pcmcia_put_socket(socket);
Dominik Brodowski9fea84f2009-12-07 22:11:45 +01001358 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001359 }
1360
1361 return 0;
1362}
1363
Greg Kroah-Hartman87373312006-09-12 17:00:10 +02001364static void pcmcia_bus_remove_socket(struct device *dev,
Dmitry Torokhovd8539d82005-09-15 02:01:36 -05001365 struct class_interface *class_intf)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001366{
Greg Kroah-Hartman87373312006-09-12 17:00:10 +02001367 struct pcmcia_socket *socket = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001368
Dominik Brodowskidc109492005-06-27 16:28:50 -07001369 if (!socket)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001370 return;
1371
1372 pccard_register_pcmcia(socket, NULL);
1373
Daniel Ritzdfbc9e92006-11-18 22:19:34 -08001374 /* unregister any unbound devices */
Daniel Ritz8e4d9dc2006-11-25 11:09:17 -08001375 mutex_lock(&socket->skt_mutex);
Daniel Ritzdfbc9e92006-11-18 22:19:34 -08001376 pcmcia_card_remove(socket, NULL);
Dominik Brodowski180c33e2010-01-02 17:34:09 +01001377 release_cis_mem(socket);
Daniel Ritz8e4d9dc2006-11-25 11:09:17 -08001378 mutex_unlock(&socket->skt_mutex);
Daniel Ritzdfbc9e92006-11-18 22:19:34 -08001379
Dominik Brodowski6e7b51a2010-01-06 13:57:43 +01001380 sysfs_remove_bin_file(&dev->kobj, &pccard_cis_attr);
1381
Dominik Brodowskidc109492005-06-27 16:28:50 -07001382 pcmcia_put_socket(socket);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001383
1384 return;
1385}
1386
1387
1388/* the pcmcia_bus_interface is used to handle pcmcia socket devices */
Sam Ravnborged49f5d2008-05-01 04:34:50 -07001389static struct class_interface pcmcia_bus_interface __refdata = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001390 .class = &pcmcia_socket_class,
Greg Kroah-Hartman87373312006-09-12 17:00:10 +02001391 .add_dev = &pcmcia_bus_add_socket,
1392 .remove_dev = &pcmcia_bus_remove_socket,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001393};
1394
1395
Dominik Brodowskie7a480d2005-06-27 16:28:47 -07001396struct bus_type pcmcia_bus_type = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001397 .name = "pcmcia",
Kay Sievers312c0042005-11-16 09:00:00 +01001398 .uevent = pcmcia_bus_uevent,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001399 .match = pcmcia_bus_match,
1400 .dev_attrs = pcmcia_dev_attrs,
Russell King1d0baa32006-01-05 14:40:58 +00001401 .probe = pcmcia_device_probe,
1402 .remove = pcmcia_device_remove,
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001403 .suspend = pcmcia_dev_suspend,
1404 .resume = pcmcia_dev_resume,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001405};
Linus Torvalds1da177e2005-04-16 15:20:36 -07001406
1407
1408static int __init init_pcmcia_bus(void)
1409{
Randy Dunlapace7d472006-10-20 14:44:12 -07001410 int ret;
1411
Randy Dunlapace7d472006-10-20 14:44:12 -07001412 ret = bus_register(&pcmcia_bus_type);
1413 if (ret < 0) {
1414 printk(KERN_WARNING "pcmcia: bus_register error: %d\n", ret);
1415 return ret;
1416 }
1417 ret = class_interface_register(&pcmcia_bus_interface);
1418 if (ret < 0) {
1419 printk(KERN_WARNING
1420 "pcmcia: class_interface_register error: %d\n", ret);
1421 bus_unregister(&pcmcia_bus_type);
1422 return ret;
1423 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001424
Linus Torvalds1da177e2005-04-16 15:20:36 -07001425 return 0;
1426}
Dominik Brodowski9fea84f2009-12-07 22:11:45 +01001427fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that
Linus Torvalds1da177e2005-04-16 15:20:36 -07001428 * pcmcia_socket_class is already registered */
1429
1430
1431static void __exit exit_pcmcia_bus(void)
1432{
Dominik Brodowskie7a480d2005-06-27 16:28:47 -07001433 class_interface_unregister(&pcmcia_bus_interface);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001434
1435 bus_unregister(&pcmcia_bus_type);
1436}
1437module_exit(exit_pcmcia_bus);
1438
1439
Linus Torvalds1da177e2005-04-16 15:20:36 -07001440MODULE_ALIAS("ds");