blob: d3baf0bfca9f0692f9a2789465f727c911e0f7f2 [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
Alan Sterncef9bc52012-01-24 13:34:41 -0500130 retval = driver_attach(&pdrv->drv);
Bernhard Walle6179b552007-05-06 14:48:44 -0700131
132 if (retval)
133 return retval;
134 return count;
135}
136static DRIVER_ATTR(new_id, S_IWUSR, NULL, pcmcia_store_new_id);
137
138static void
139pcmcia_free_dynids(struct pcmcia_driver *drv)
140{
141 struct pcmcia_dynid *dynid, *n;
142
Dominik Brodowski3f565232010-01-16 13:06:40 +0100143 mutex_lock(&drv->dynids.lock);
Bernhard Walle6179b552007-05-06 14:48:44 -0700144 list_for_each_entry_safe(dynid, n, &drv->dynids.list, node) {
145 list_del(&dynid->node);
146 kfree(dynid);
147 }
Dominik Brodowski3f565232010-01-16 13:06:40 +0100148 mutex_unlock(&drv->dynids.lock);
Bernhard Walle6179b552007-05-06 14:48:44 -0700149}
150
151static int
152pcmcia_create_newid_file(struct pcmcia_driver *drv)
153{
154 int error = 0;
155 if (drv->probe != NULL)
Greg Kroah-Hartman2344c6d2007-11-28 12:23:18 -0800156 error = driver_create_file(&drv->drv, &driver_attr_new_id);
Bernhard Walle6179b552007-05-06 14:48:44 -0700157 return error;
158}
159
Alan Sterned283e92012-01-24 14:35:13 -0500160static void
161pcmcia_remove_newid_file(struct pcmcia_driver *drv)
162{
163 driver_remove_file(&drv->drv, &driver_attr_new_id);
164}
Bernhard Walle6179b552007-05-06 14:48:44 -0700165
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166/**
167 * pcmcia_register_driver - register a PCMCIA driver with the bus core
Randy Dunlap78187862007-12-10 15:49:22 -0800168 * @driver: the &driver being registered
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169 *
170 * Registers a PCMCIA driver with the PCMCIA bus core.
171 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172int pcmcia_register_driver(struct pcmcia_driver *driver)
173{
Bernhard Walle6179b552007-05-06 14:48:44 -0700174 int error;
175
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176 if (!driver)
177 return -EINVAL;
178
Dominik Brodowski23a83bf2005-06-27 16:28:07 -0700179 pcmcia_check_driver(driver);
180
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181 /* initialize common fields */
182 driver->drv.bus = &pcmcia_bus_type;
183 driver->drv.owner = driver->owner;
Dominik Brodowski2e9b9812010-08-08 11:36:26 +0200184 driver->drv.name = driver->name;
Dominik Brodowski3f565232010-01-16 13:06:40 +0100185 mutex_init(&driver->dynids.lock);
Bernhard Walle6179b552007-05-06 14:48:44 -0700186 INIT_LIST_HEAD(&driver->dynids.list);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187
Dominik Brodowski2e9b9812010-08-08 11:36:26 +0200188 pr_debug("registering driver %s\n", driver->name);
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200189
Bernhard Walle6179b552007-05-06 14:48:44 -0700190 error = driver_register(&driver->drv);
191 if (error < 0)
192 return error;
193
194 error = pcmcia_create_newid_file(driver);
195 if (error)
196 driver_unregister(&driver->drv);
197
198 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199}
200EXPORT_SYMBOL(pcmcia_register_driver);
201
202/**
203 * pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core
Randy Dunlap78187862007-12-10 15:49:22 -0800204 * @driver: the &driver being unregistered
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205 */
206void pcmcia_unregister_driver(struct pcmcia_driver *driver)
207{
Dominik Brodowski2e9b9812010-08-08 11:36:26 +0200208 pr_debug("unregistering driver %s\n", driver->name);
Alan Sterned283e92012-01-24 14:35:13 -0500209 pcmcia_remove_newid_file(driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210 driver_unregister(&driver->drv);
Bernhard Walle6179b552007-05-06 14:48:44 -0700211 pcmcia_free_dynids(driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212}
213EXPORT_SYMBOL(pcmcia_unregister_driver);
214
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215
216/* pcmcia_device handling */
217
Dominik Brodowski5716d412010-07-11 09:51:14 +0200218static struct pcmcia_device *pcmcia_get_dev(struct pcmcia_device *p_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219{
220 struct device *tmp_dev;
221 tmp_dev = get_device(&p_dev->dev);
222 if (!tmp_dev)
223 return NULL;
224 return to_pcmcia_dev(tmp_dev);
225}
226
Dominik Brodowski5716d412010-07-11 09:51:14 +0200227static void pcmcia_put_dev(struct pcmcia_device *p_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228{
229 if (p_dev)
230 put_device(&p_dev->dev);
231}
232
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100233static void pcmcia_release_function(struct kref *ref)
234{
235 struct config_t *c = container_of(ref, struct config_t, ref);
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200236 pr_debug("releasing config_t\n");
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100237 kfree(c);
238}
239
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240static void pcmcia_release_dev(struct device *dev)
241{
242 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
Dominik Brodowski44961a02010-01-24 12:11:02 +0100243 int i;
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200244 dev_dbg(dev, "releasing device\n");
Dominik Brodowskidc109492005-06-27 16:28:50 -0700245 pcmcia_put_socket(p_dev->socket);
Dominik Brodowski44961a02010-01-24 12:11:02 +0100246 for (i = 0; i < 4; i++)
247 kfree(p_dev->prod_id[i]);
Brice Goglinbd65a682005-09-09 13:03:29 -0700248 kfree(p_dev->devname);
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100249 kref_put(&p_dev->function_config->ref, pcmcia_release_function);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250 kfree(p_dev);
251}
252
253
Dominik Brodowski9fea84f2009-12-07 22:11:45 +0100254static int pcmcia_device_probe(struct device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255{
256 struct pcmcia_device *p_dev;
257 struct pcmcia_driver *p_drv;
Dominik Brodowskif8cfa612005-11-14 21:25:51 +0100258 struct pcmcia_socket *s;
Dominik Brodowskiaf2b3b52006-10-25 21:49:27 -0400259 cistpl_config_t cis_config;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700260 int ret = 0;
261
262 dev = get_device(dev);
263 if (!dev)
264 return -ENODEV;
265
266 p_dev = to_pcmcia_dev(dev);
267 p_drv = to_pcmcia_drv(dev->driver);
Dominik Brodowskif8cfa612005-11-14 21:25:51 +0100268 s = p_dev->socket;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269
Dominik Brodowski2e9b9812010-08-08 11:36:26 +0200270 dev_dbg(dev, "trying to bind to %s\n", p_drv->name);
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200271
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100272 if ((!p_drv->probe) || (!p_dev->function_config) ||
273 (!try_module_get(p_drv->owner))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274 ret = -EINVAL;
275 goto put_dev;
276 }
277
Dominik Brodowskiaf2b3b52006-10-25 21:49:27 -0400278 /* set up some more device information */
279 ret = pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_CONFIG,
280 &cis_config);
281 if (!ret) {
Dominik Brodowski7feabb62010-07-29 18:35:47 +0200282 p_dev->config_base = cis_config.base;
283 p_dev->config_regs = cis_config.rmask[0];
Dominik Brodowski1cc745d2010-08-01 11:21:14 +0200284 dev_dbg(dev, "base %x, regs %x", p_dev->config_base,
285 p_dev->config_regs);
Dominik Brodowskiaf2b3b52006-10-25 21:49:27 -0400286 } else {
Dominik Brodowskiac449d62008-08-02 18:33:56 +0200287 dev_printk(KERN_INFO, dev,
288 "pcmcia: could not parse base and rmask0 of CIS\n");
Dominik Brodowski7feabb62010-07-29 18:35:47 +0200289 p_dev->config_base = 0;
290 p_dev->config_regs = 0;
Dominik Brodowskiaf2b3b52006-10-25 21:49:27 -0400291 }
292
Dominik Brodowskif8cfa612005-11-14 21:25:51 +0100293 ret = p_drv->probe(p_dev);
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200294 if (ret) {
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200295 dev_dbg(dev, "binding to %s failed with %d\n",
Dominik Brodowski2e9b9812010-08-08 11:36:26 +0200296 p_drv->name, ret);
Dominik Brodowski82d56e62006-01-27 19:15:02 +0100297 goto put_module;
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200298 }
Dominik Brodowski2e9b9812010-08-08 11:36:26 +0200299 dev_dbg(dev, "%s bound: Vpp %d.%d, idx %x, IRQ %d", p_drv->name,
Dominik Brodowski1cc745d2010-08-01 11:21:14 +0200300 p_dev->vpp/10, p_dev->vpp%10, p_dev->config_index, p_dev->irq);
301 dev_dbg(dev, "resources: ioport %pR %pR iomem %pR %pR %pR",
302 p_dev->resource[0], p_dev->resource[1], p_dev->resource[2],
303 p_dev->resource[3], p_dev->resource[4]);
Dominik Brodowski82d56e62006-01-27 19:15:02 +0100304
Dominik Brodowski00ce99f2010-01-16 09:14:11 +0100305 mutex_lock(&s->ops_mutex);
Dominik Brodowskice3f9d72010-07-21 14:43:05 +0200306 if ((s->pcmcia_pfc) &&
Dominik Brodowski82d56e62006-01-27 19:15:02 +0100307 (p_dev->socket->device_count == 1) && (p_dev->device_no == 0))
Dominik Brodowskiaa584ca2010-01-24 14:36:59 +0100308 pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY);
Dominik Brodowski00ce99f2010-01-16 09:14:11 +0100309 mutex_unlock(&s->ops_mutex);
Dominik Brodowskif8cfa612005-11-14 21:25:51 +0100310
Alan Coxcec5eb72008-09-22 15:58:14 +0100311put_module:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312 if (ret)
313 module_put(p_drv->owner);
Alan Coxcec5eb72008-09-22 15:58:14 +0100314put_dev:
Dominik Brodowskif8cfa612005-11-14 21:25:51 +0100315 if (ret)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316 put_device(dev);
Dominik Brodowski9fea84f2009-12-07 22:11:45 +0100317 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318}
319
320
Dominik Brodowskid6ff5a82006-02-05 09:51:34 +0100321/*
322 * Removes a PCMCIA card from the device tree and socket list.
323 */
324static void pcmcia_card_remove(struct pcmcia_socket *s, struct pcmcia_device *leftover)
325{
326 struct pcmcia_device *p_dev;
327 struct pcmcia_device *tmp;
Dominik Brodowskid6ff5a82006-02-05 09:51:34 +0100328
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200329 dev_dbg(leftover ? &leftover->dev : &s->dev,
Dominik Brodowskiac449d62008-08-02 18:33:56 +0200330 "pcmcia_card_remove(%d) %s\n", s->sock,
331 leftover ? leftover->devname : "");
Dominik Brodowskid6ff5a82006-02-05 09:51:34 +0100332
Dominik Brodowski00ce99f2010-01-16 09:14:11 +0100333 mutex_lock(&s->ops_mutex);
Dominik Brodowskid6ff5a82006-02-05 09:51:34 +0100334 if (!leftover)
335 s->device_count = 0;
336 else
337 s->device_count = 1;
Dominik Brodowski00ce99f2010-01-16 09:14:11 +0100338 mutex_unlock(&s->ops_mutex);
Dominik Brodowskid6ff5a82006-02-05 09:51:34 +0100339
340 /* unregister all pcmcia_devices registered with this socket, except leftover */
341 list_for_each_entry_safe(p_dev, tmp, &s->devices_list, socket_device_list) {
342 if (p_dev == leftover)
343 continue;
344
Dominik Brodowski00ce99f2010-01-16 09:14:11 +0100345 mutex_lock(&s->ops_mutex);
Dominik Brodowskid6ff5a82006-02-05 09:51:34 +0100346 list_del(&p_dev->socket_device_list);
Dominik Brodowski00ce99f2010-01-16 09:14:11 +0100347 mutex_unlock(&s->ops_mutex);
Dominik Brodowskid6ff5a82006-02-05 09:51:34 +0100348
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200349 dev_dbg(&p_dev->dev, "unregistering device\n");
Dominik Brodowskid6ff5a82006-02-05 09:51:34 +0100350 device_unregister(&p_dev->dev);
351 }
352
353 return;
354}
355
Dominik Brodowski9fea84f2009-12-07 22:11:45 +0100356static int pcmcia_device_remove(struct device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357{
358 struct pcmcia_device *p_dev;
359 struct pcmcia_driver *p_drv;
Dominik Brodowskicc3b4862005-11-14 21:23:14 +0100360 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362 p_dev = to_pcmcia_dev(dev);
363 p_drv = to_pcmcia_drv(dev->driver);
Dominik Brodowskid6ff5a82006-02-05 09:51:34 +0100364
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200365 dev_dbg(dev, "removing device\n");
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200366
Dominik Brodowskid6ff5a82006-02-05 09:51:34 +0100367 /* If we're removing the primary module driving a
368 * pseudo multi-function card, we need to unbind
369 * all devices
370 */
Dominik Brodowskice3f9d72010-07-21 14:43:05 +0200371 if ((p_dev->socket->pcmcia_pfc) &&
Dominik Brodowskie6e4f392010-01-16 01:34:06 +0100372 (p_dev->socket->device_count > 0) &&
Dominik Brodowskid6ff5a82006-02-05 09:51:34 +0100373 (p_dev->device_no == 0))
374 pcmcia_card_remove(p_dev->socket, p_dev);
375
376 /* detach the "instance" */
Dominik Brodowskif3990712005-11-14 21:25:23 +0100377 if (!p_drv)
378 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379
Dominik Brodowskif3990712005-11-14 21:25:23 +0100380 if (p_drv->remove)
Dominik Brodowski9fea84f2009-12-07 22:11:45 +0100381 p_drv->remove(p_dev);
Dominik Brodowskicc3b4862005-11-14 21:23:14 +0100382
Dominik Brodowskif3990712005-11-14 21:25:23 +0100383 /* check for proper unloading */
Dominik Brodowskie2d40962006-03-02 00:09:29 +0100384 if (p_dev->_irq || p_dev->_io || p_dev->_locked)
Dominik Brodowskiac449d62008-08-02 18:33:56 +0200385 dev_printk(KERN_INFO, dev,
386 "pcmcia: driver %s did not release config properly\n",
Dominik Brodowski2e9b9812010-08-08 11:36:26 +0200387 p_drv->name);
Dominik Brodowskif3990712005-11-14 21:25:23 +0100388
389 for (i = 0; i < MAX_WIN; i++)
Dominik Brodowskie2d40962006-03-02 00:09:29 +0100390 if (p_dev->_win & CLIENT_WIN_REQ(i))
Dominik Brodowskiac449d62008-08-02 18:33:56 +0200391 dev_printk(KERN_INFO, dev,
392 "pcmcia: driver %s did not release window properly\n",
Dominik Brodowski2e9b9812010-08-08 11:36:26 +0200393 p_drv->name);
Dominik Brodowskicc3b4862005-11-14 21:23:14 +0100394
Dominik Brodowskif3990712005-11-14 21:25:23 +0100395 /* references from pcmcia_probe_device */
396 pcmcia_put_dev(p_dev);
397 module_put(p_drv->owner);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398
399 return 0;
400}
401
402
Dominik Brodowskicc3b4862005-11-14 21:23:14 +0100403/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404 * pcmcia_device_query -- determine information about a pcmcia device
405 */
406static int pcmcia_device_query(struct pcmcia_device *p_dev)
407{
408 cistpl_manfid_t manf_id;
409 cistpl_funcid_t func_id;
Ingo Molnar76fa82f2005-09-09 13:03:21 -0700410 cistpl_vers_1_t *vers1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411 unsigned int i;
412
Ingo Molnar76fa82f2005-09-09 13:03:21 -0700413 vers1 = kmalloc(sizeof(*vers1), GFP_KERNEL);
414 if (!vers1)
415 return -ENOMEM;
416
Dominik Brodowski84897fc2009-10-18 23:51:09 +0200417 if (!pccard_read_tuple(p_dev->socket, BIND_FN_ALL,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418 CISTPL_MANFID, &manf_id)) {
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100419 mutex_lock(&p_dev->socket->ops_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420 p_dev->manf_id = manf_id.manf;
421 p_dev->card_id = manf_id.card;
422 p_dev->has_manf_id = 1;
423 p_dev->has_card_id = 1;
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100424 mutex_unlock(&p_dev->socket->ops_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425 }
426
427 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
428 CISTPL_FUNCID, &func_id)) {
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100429 mutex_lock(&p_dev->socket->ops_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430 p_dev->func_id = func_id.func;
431 p_dev->has_func_id = 1;
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100432 mutex_unlock(&p_dev->socket->ops_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433 } else {
434 /* rule of thumb: cards with no FUNCID, but with
435 * common memory device geometry information, are
436 * probably memory cards (from pcmcia-cs) */
Ingo Molnar76fa82f2005-09-09 13:03:21 -0700437 cistpl_device_geo_t *devgeo;
438
439 devgeo = kmalloc(sizeof(*devgeo), GFP_KERNEL);
440 if (!devgeo) {
441 kfree(vers1);
442 return -ENOMEM;
443 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
Ingo Molnar76fa82f2005-09-09 13:03:21 -0700445 CISTPL_DEVICE_GEO, devgeo)) {
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200446 dev_dbg(&p_dev->dev,
Dominik Brodowskiac449d62008-08-02 18:33:56 +0200447 "mem device geometry probably means "
448 "FUNCID_MEMORY\n");
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100449 mutex_lock(&p_dev->socket->ops_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450 p_dev->func_id = CISTPL_FUNCID_MEMORY;
451 p_dev->has_func_id = 1;
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100452 mutex_unlock(&p_dev->socket->ops_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453 }
Ingo Molnar76fa82f2005-09-09 13:03:21 -0700454 kfree(devgeo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455 }
456
Dominik Brodowski84897fc2009-10-18 23:51:09 +0200457 if (!pccard_read_tuple(p_dev->socket, BIND_FN_ALL, CISTPL_VERS_1,
Ingo Molnar76fa82f2005-09-09 13:03:21 -0700458 vers1)) {
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100459 mutex_lock(&p_dev->socket->ops_mutex);
Dominik Brodowskic5e09522009-10-19 00:04:25 +0200460 for (i = 0; i < min_t(unsigned int, 4, vers1->ns); i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461 char *tmp;
462 unsigned int length;
Dominik Brodowski44961a02010-01-24 12:11:02 +0100463 char *new;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464
Ingo Molnar76fa82f2005-09-09 13:03:21 -0700465 tmp = vers1->str + vers1->ofs[i];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466
467 length = strlen(tmp) + 1;
Janos Farkas6e3d4f22006-03-31 01:04:57 +0200468 if ((length < 2) || (length > 255))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700469 continue;
470
Dominik Brodowski44961a02010-01-24 12:11:02 +0100471 new = kmalloc(sizeof(char) * length, GFP_KERNEL);
472 if (!new)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700473 continue;
474
Dominik Brodowski44961a02010-01-24 12:11:02 +0100475 new = strncpy(new, tmp, length);
476
477 tmp = p_dev->prod_id[i];
478 p_dev->prod_id[i] = new;
479 kfree(tmp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700480 }
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100481 mutex_unlock(&p_dev->socket->ops_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700482 }
483
Ingo Molnar76fa82f2005-09-09 13:03:21 -0700484 kfree(vers1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700485 return 0;
486}
487
488
Dominik Brodowski5716d412010-07-11 09:51:14 +0200489static struct pcmcia_device *pcmcia_device_add(struct pcmcia_socket *s,
490 unsigned int function)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700491{
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100492 struct pcmcia_device *p_dev, *tmp_dev;
Dominik Brodowski44961a02010-01-24 12:11:02 +0100493 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700494
Dominik Brodowskidc109492005-06-27 16:28:50 -0700495 s = pcmcia_get_socket(s);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496 if (!s)
497 return NULL;
498
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200499 pr_debug("adding device to %d, function %d\n", s->sock, function);
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200500
Dominik Brodowski8084b372005-12-11 21:18:26 +0100501 p_dev = kzalloc(sizeof(struct pcmcia_device), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700502 if (!p_dev)
503 goto err_put;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700504
Dominik Brodowski00ce99f2010-01-16 09:14:11 +0100505 mutex_lock(&s->ops_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700506 p_dev->device_no = (s->device_count++);
Dominik Brodowski00ce99f2010-01-16 09:14:11 +0100507 mutex_unlock(&s->ops_mutex);
Dominik Brodowskie6e4f392010-01-16 01:34:06 +0100508
Dominik Brodowski7d7ba8d2010-03-24 10:49:14 +0100509 /* max of 2 PFC devices */
510 if ((p_dev->device_no >= 2) && (function == 0))
511 goto err_free;
512
513 /* max of 4 devices overall */
514 if (p_dev->device_no >= 4)
Dominik Brodowskie6e4f392010-01-16 01:34:06 +0100515 goto err_free;
516
517 p_dev->socket = s;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518 p_dev->func = function;
519
520 p_dev->dev.bus = &pcmcia_bus_type;
Greg Kroah-Hartman87373312006-09-12 17:00:10 +0200521 p_dev->dev.parent = s->dev.parent;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700522 p_dev->dev.release = pcmcia_release_dev;
James Bottomley43d9f7f2007-10-16 01:23:58 -0700523 /* by default don't allow DMA */
524 p_dev->dma_mask = DMA_MASK_NONE;
525 p_dev->dev.dma_mask = &p_dev->dma_mask;
Kay Sievers25096982008-11-01 11:46:06 +0100526 dev_set_name(&p_dev->dev, "%d.%d", p_dev->socket->sock, p_dev->device_no);
527 if (!dev_name(&p_dev->dev))
528 goto err_free;
529 p_dev->devname = kasprintf(GFP_KERNEL, "pcmcia%s", dev_name(&p_dev->dev));
Brice Goglinbd65a682005-09-09 13:03:29 -0700530 if (!p_dev->devname)
531 goto err_free;
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200532 dev_dbg(&p_dev->dev, "devname is %s\n", p_dev->devname);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700533
Dominik Brodowski00ce99f2010-01-16 09:14:11 +0100534 mutex_lock(&s->ops_mutex);
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100535
536 /*
537 * p_dev->function_config must be the same for all card functions.
Dominik Brodowskia60f22c2010-03-07 09:22:51 +0100538 * Note that this is serialized by ops_mutex, so that only one
539 * such struct will be created.
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100540 */
Dominik Brodowski9fea84f2009-12-07 22:11:45 +0100541 list_for_each_entry(tmp_dev, &s->devices_list, socket_device_list)
542 if (p_dev->func == tmp_dev->func) {
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100543 p_dev->function_config = tmp_dev->function_config;
Komuro3e879f62008-11-02 19:33:24 +0900544 p_dev->irq = tmp_dev->irq;
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100545 kref_get(&p_dev->function_config->ref);
546 }
547
548 /* Add to the list in pcmcia_bus_socket */
Komuro6171b882006-04-02 17:39:27 +0900549 list_add(&p_dev->socket_device_list, &s->devices_list);
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100550
Dominik Brodowski6f0f38c2010-04-08 20:33:16 +0200551 if (pcmcia_setup_irq(p_dev))
552 dev_warn(&p_dev->dev,
553 "IRQ setup failed -- device might not work\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700554
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100555 if (!p_dev->function_config) {
Dominik Brodowski2ce49052010-07-24 13:14:44 +0200556 config_t *c;
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200557 dev_dbg(&p_dev->dev, "creating config_t\n");
Dominik Brodowski2ce49052010-07-24 13:14:44 +0200558 c = kzalloc(sizeof(struct config_t), GFP_KERNEL);
559 if (!c) {
Dominik Brodowski6f0f38c2010-04-08 20:33:16 +0200560 mutex_unlock(&s->ops_mutex);
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100561 goto err_unreg;
Dominik Brodowski6f0f38c2010-04-08 20:33:16 +0200562 }
Dominik Brodowski2ce49052010-07-24 13:14:44 +0200563 p_dev->function_config = c;
564 kref_init(&c->ref);
565 for (i = 0; i < MAX_IO_WIN; i++) {
Dominik Brodowskiad0c7be2010-07-25 13:10:22 +0200566 c->io[i].name = p_dev->devname;
Dominik Brodowski2ce49052010-07-24 13:14:44 +0200567 c->io[i].flags = IORESOURCE_IO;
568 }
Dominik Brodowski0ca724d2010-07-24 19:03:02 +0200569 for (i = 0; i< MAX_WIN; i++) {
Dominik Brodowskiad0c7be2010-07-25 13:10:22 +0200570 c->mem[i].name = p_dev->devname;
Dominik Brodowski0ca724d2010-07-24 19:03:02 +0200571 c->mem[i].flags = IORESOURCE_MEM;
572 }
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100573 }
Dominik Brodowski2ce49052010-07-24 13:14:44 +0200574 for (i = 0; i < MAX_IO_WIN; i++)
575 p_dev->resource[i] = &p_dev->function_config->io[i];
Dominik Brodowski0ca724d2010-07-24 19:03:02 +0200576 for (; i < (MAX_IO_WIN + MAX_WIN); i++)
577 p_dev->resource[i] = &p_dev->function_config->mem[i-MAX_IO_WIN];
Dominik Brodowski2ce49052010-07-24 13:14:44 +0200578
Dominik Brodowski6f0f38c2010-04-08 20:33:16 +0200579 mutex_unlock(&s->ops_mutex);
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100580
Dominik Brodowskiac449d62008-08-02 18:33:56 +0200581 dev_printk(KERN_NOTICE, &p_dev->dev,
Dominik Brodowski6f0f38c2010-04-08 20:33:16 +0200582 "pcmcia: registering new device %s (IRQ: %d)\n",
Dominik Brodowskieb141202010-03-07 12:21:16 +0100583 p_dev->devname, p_dev->irq);
Dominik Brodowski807277c2005-11-12 23:34:06 +0100584
Dominik Brodowski1ad275e2005-06-27 16:28:06 -0700585 pcmcia_device_query(p_dev);
586
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100587 if (device_register(&p_dev->dev))
588 goto err_unreg;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700589
Linus Torvalds1da177e2005-04-16 15:20:36 -0700590 return p_dev;
591
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100592 err_unreg:
Dominik Brodowski00ce99f2010-01-16 09:14:11 +0100593 mutex_lock(&s->ops_mutex);
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100594 list_del(&p_dev->socket_device_list);
Dominik Brodowski00ce99f2010-01-16 09:14:11 +0100595 mutex_unlock(&s->ops_mutex);
Dominik Brodowski360b65b2006-01-10 20:50:39 +0100596
Linus Torvalds1da177e2005-04-16 15:20:36 -0700597 err_free:
Dominik Brodowski00ce99f2010-01-16 09:14:11 +0100598 mutex_lock(&s->ops_mutex);
Dominik Brodowskie6e4f392010-01-16 01:34:06 +0100599 s->device_count--;
Dominik Brodowski00ce99f2010-01-16 09:14:11 +0100600 mutex_unlock(&s->ops_mutex);
Dominik Brodowskie6e4f392010-01-16 01:34:06 +0100601
Dominik Brodowski44961a02010-01-24 12:11:02 +0100602 for (i = 0; i < 4; i++)
603 kfree(p_dev->prod_id[i]);
Brice Goglinbd65a682005-09-09 13:03:29 -0700604 kfree(p_dev->devname);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605 kfree(p_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700606 err_put:
Dominik Brodowskidc109492005-06-27 16:28:50 -0700607 pcmcia_put_socket(s);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700608
609 return NULL;
610}
611
612
613static int pcmcia_card_add(struct pcmcia_socket *s)
614{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700615 cistpl_longlink_mfc_t mfc;
Dominik Brodowskic5081d52008-06-19 20:12:34 +0200616 unsigned int no_funcs, i, no_chains;
Dominik Brodowskicfe5d802010-01-17 19:31:45 +0100617 int ret = -EAGAIN;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700618
Dominik Brodowskicfe5d802010-01-17 19:31:45 +0100619 mutex_lock(&s->ops_mutex);
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200620 if (!(s->resource_setup_done)) {
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200621 dev_dbg(&s->dev,
Dominik Brodowskiac449d62008-08-02 18:33:56 +0200622 "no resources available, delaying card_add\n");
Dominik Brodowskicfe5d802010-01-17 19:31:45 +0100623 mutex_unlock(&s->ops_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700624 return -EAGAIN; /* try again, but later... */
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200625 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700626
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200627 if (pcmcia_validate_mem(s)) {
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200628 dev_dbg(&s->dev, "validating mem resources failed, "
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200629 "delaying card_add\n");
Dominik Brodowskicfe5d802010-01-17 19:31:45 +0100630 mutex_unlock(&s->ops_mutex);
Dominik Brodowskide759142005-09-28 19:41:56 +0200631 return -EAGAIN; /* try again, but later... */
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200632 }
Dominik Brodowskicfe5d802010-01-17 19:31:45 +0100633 mutex_unlock(&s->ops_mutex);
Dominik Brodowskide759142005-09-28 19:41:56 +0200634
Dominik Brodowski84897fc2009-10-18 23:51:09 +0200635 ret = pccard_validate_cis(s, &no_chains);
Dominik Brodowskic5081d52008-06-19 20:12:34 +0200636 if (ret || !no_chains) {
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200637 dev_dbg(&s->dev, "invalid CIS or invalid resources\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700638 return -ENODEV;
639 }
640
641 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc))
642 no_funcs = mfc.nfn;
643 else
644 no_funcs = 1;
Dominik Brodowski1d2c9042006-11-06 21:52:16 -0500645 s->functions = no_funcs;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700646
Dominik Brodowski9fea84f2009-12-07 22:11:45 +0100647 for (i = 0; i < no_funcs; i++)
Dominik Brodowskidc109492005-06-27 16:28:50 -0700648 pcmcia_device_add(s, i);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700649
Dominik Brodowski9fea84f2009-12-07 22:11:45 +0100650 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700651}
652
653
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100654static int pcmcia_requery_callback(struct device *dev, void * _data)
Dominik Brodowskiff1fa9e2005-06-27 16:28:09 -0700655{
Dominik Brodowskie2f0b532005-06-27 16:28:17 -0700656 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200657 if (!p_dev->dev.driver) {
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200658 dev_dbg(dev, "update device information\n");
Dominik Brodowskie2f0b532005-06-27 16:28:17 -0700659 pcmcia_device_query(p_dev);
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200660 }
Dominik Brodowskie2f0b532005-06-27 16:28:17 -0700661
662 return 0;
663}
664
Dominik Brodowskiaa584ca2010-01-24 14:36:59 +0100665
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100666static void pcmcia_requery(struct pcmcia_socket *s)
Dominik Brodowskie2f0b532005-06-27 16:28:17 -0700667{
Dominik Brodowski04de0812010-04-20 14:49:01 +0200668 int has_pfc;
Dominik Brodowskie2f0b532005-06-27 16:28:17 -0700669
Alan Cox84026412014-12-10 15:06:40 +0000670 if (!(s->state & SOCKET_PRESENT))
671 return;
672
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100673 if (s->functions == 0) {
674 pcmcia_card_add(s);
675 return;
Dominik Brodowskie2f0b532005-06-27 16:28:17 -0700676 }
677
678 /* some device information might have changed because of a CIS
679 * update or because we can finally read it correctly... so
680 * determine it again, overwriting old values if necessary. */
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100681 bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery_callback);
682
683 /* if the CIS changed, we need to check whether the number of
684 * functions changed. */
685 if (s->fake_cis) {
686 int old_funcs, new_funcs;
687 cistpl_longlink_mfc_t mfc;
688
689 /* does this cis override add or remove functions? */
690 old_funcs = s->functions;
691
692 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC,
693 &mfc))
694 new_funcs = mfc.nfn;
695 else
696 new_funcs = 1;
Dominik Brodowskib1095af2010-04-08 20:10:21 +0200697 if (old_funcs != new_funcs) {
698 /* we need to re-start */
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100699 pcmcia_card_remove(s, NULL);
Dominik Brodowskib83156b2010-06-07 18:31:17 +0200700 s->functions = 0;
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100701 pcmcia_card_add(s);
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100702 }
703 }
Dominik Brodowskie2f0b532005-06-27 16:28:17 -0700704
Dominik Brodowskiaa584ca2010-01-24 14:36:59 +0100705 /* If the PCMCIA device consists of two pseudo devices,
706 * call pcmcia_device_add() -- which will fail if both
707 * devices are already registered. */
708 mutex_lock(&s->ops_mutex);
Dominik Brodowskice3f9d72010-07-21 14:43:05 +0200709 has_pfc = s->pcmcia_pfc;
Dominik Brodowskiaa584ca2010-01-24 14:36:59 +0100710 mutex_unlock(&s->ops_mutex);
711 if (has_pfc)
712 pcmcia_device_add(s, 0);
713
Dominik Brodowskie2f0b532005-06-27 16:28:17 -0700714 /* we re-scan all devices, not just the ones connected to this
715 * socket. This does not matter, though. */
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100716 if (bus_rescan_devices(&pcmcia_bus_type))
717 dev_warn(&s->dev, "rescanning the bus failed\n");
Dominik Brodowskiff1fa9e2005-06-27 16:28:09 -0700718}
Dominik Brodowski1ad275e2005-06-27 16:28:06 -0700719
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +0100720
Dominik Brodowski1d2c9042006-11-06 21:52:16 -0500721#ifdef CONFIG_PCMCIA_LOAD_CIS
722
723/**
724 * pcmcia_load_firmware - load CIS from userspace if device-provided is broken
Randy Dunlap78187862007-12-10 15:49:22 -0800725 * @dev: the pcmcia device which needs a CIS override
726 * @filename: requested filename in /lib/firmware/
Dominik Brodowski1d2c9042006-11-06 21:52:16 -0500727 *
728 * This uses the in-kernel firmware loading mechanism to use a "fake CIS" if
729 * the one provided by the card is broken. The firmware files reside in
730 * /lib/firmware/ in userspace.
731 */
732static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
733{
734 struct pcmcia_socket *s = dev->socket;
735 const struct firmware *fw;
Dominik Brodowski1d2c9042006-11-06 21:52:16 -0500736 int ret = -ENOMEM;
Dominik Brodowskib1095af2010-04-08 20:10:21 +0200737 cistpl_longlink_mfc_t mfc;
738 int old_funcs, new_funcs = 1;
Dominik Brodowski1d2c9042006-11-06 21:52:16 -0500739
740 if (!filename)
741 return -EINVAL;
742
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200743 dev_dbg(&dev->dev, "trying to load CIS file %s\n", filename);
Dominik Brodowski1d2c9042006-11-06 21:52:16 -0500744
Samuel Ortized62ace2009-05-27 00:49:35 +0200745 if (request_firmware(&fw, filename, &dev->dev) == 0) {
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200746 if (fw->size >= CISTPL_MAX_CIS_SIZE) {
747 ret = -EINVAL;
Dominik Brodowskiac449d62008-08-02 18:33:56 +0200748 dev_printk(KERN_ERR, &dev->dev,
749 "pcmcia: CIS override is too big\n");
Dominik Brodowski1d2c9042006-11-06 21:52:16 -0500750 goto release;
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200751 }
Dominik Brodowski1d2c9042006-11-06 21:52:16 -0500752
Dominik Brodowski53efec92008-07-28 19:44:05 +0200753 if (!pcmcia_replace_cis(s, fw->data, fw->size))
Dominik Brodowski1d2c9042006-11-06 21:52:16 -0500754 ret = 0;
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200755 else {
Dominik Brodowskiac449d62008-08-02 18:33:56 +0200756 dev_printk(KERN_ERR, &dev->dev,
757 "pcmcia: CIS override failed\n");
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200758 goto release;
759 }
760
Dominik Brodowskib1095af2010-04-08 20:10:21 +0200761 /* we need to re-start if the number of functions changed */
762 old_funcs = s->functions;
763 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC,
764 &mfc))
765 new_funcs = mfc.nfn;
766
767 if (old_funcs != new_funcs)
768 ret = -EBUSY;
Dominik Brodowski1d2c9042006-11-06 21:52:16 -0500769
770 /* update information */
771 pcmcia_device_query(dev);
772
Dominik Brodowskiaa584ca2010-01-24 14:36:59 +0100773 /* requery (as number of functions might have changed) */
774 pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY);
Dominik Brodowski1d2c9042006-11-06 21:52:16 -0500775 }
776 release:
777 release_firmware(fw);
778
Dominik Brodowski9fea84f2009-12-07 22:11:45 +0100779 return ret;
Dominik Brodowski1d2c9042006-11-06 21:52:16 -0500780}
781
782#else /* !CONFIG_PCMCIA_LOAD_CIS */
783
784static inline int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
785{
786 return -ENODEV;
787}
788
789#endif
790
791
Dominik Brodowski1ad275e2005-06-27 16:28:06 -0700792static inline int pcmcia_devmatch(struct pcmcia_device *dev,
Joe Perchese9fb13b2011-05-03 19:29:00 -0700793 const struct pcmcia_device_id *did)
Dominik Brodowski1ad275e2005-06-27 16:28:06 -0700794{
795 if (did->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID) {
796 if ((!dev->has_manf_id) || (dev->manf_id != did->manf_id))
797 return 0;
798 }
799
800 if (did->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID) {
801 if ((!dev->has_card_id) || (dev->card_id != did->card_id))
802 return 0;
803 }
804
805 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION) {
806 if (dev->func != did->function)
807 return 0;
808 }
809
810 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1) {
811 if (!dev->prod_id[0])
812 return 0;
813 if (strcmp(did->prod_id[0], dev->prod_id[0]))
814 return 0;
815 }
816
817 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2) {
818 if (!dev->prod_id[1])
819 return 0;
820 if (strcmp(did->prod_id[1], dev->prod_id[1]))
821 return 0;
822 }
823
824 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3) {
825 if (!dev->prod_id[2])
826 return 0;
827 if (strcmp(did->prod_id[2], dev->prod_id[2]))
828 return 0;
829 }
830
831 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4) {
832 if (!dev->prod_id[3])
833 return 0;
834 if (strcmp(did->prod_id[3], dev->prod_id[3]))
835 return 0;
836 }
837
838 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) {
Alexander Kurz83bf6f12010-04-25 13:44:35 +0400839 dev_dbg(&dev->dev, "this is a pseudo-multi-function device\n");
Dominik Brodowskiaa584ca2010-01-24 14:36:59 +0100840 mutex_lock(&dev->socket->ops_mutex);
Dominik Brodowskice3f9d72010-07-21 14:43:05 +0200841 dev->socket->pcmcia_pfc = 1;
Dominik Brodowskiaa584ca2010-01-24 14:36:59 +0100842 mutex_unlock(&dev->socket->ops_mutex);
Alexander Kurz83bf6f12010-04-25 13:44:35 +0400843 if (dev->device_no != did->device_no)
844 return 0;
Dominik Brodowski1ad275e2005-06-27 16:28:06 -0700845 }
846
847 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) {
Dominik Brodowski94a819f2010-01-17 18:31:34 +0100848 int ret;
849
Dominik Brodowski1ad275e2005-06-27 16:28:06 -0700850 if ((!dev->has_func_id) || (dev->func_id != did->func_id))
851 return 0;
852
853 /* if this is a pseudo-multi-function device,
854 * we need explicit matches */
Dominik Brodowskice3f9d72010-07-21 14:43:05 +0200855 if (dev->socket->pcmcia_pfc)
Dominik Brodowski1ad275e2005-06-27 16:28:06 -0700856 return 0;
857 if (dev->device_no)
858 return 0;
859
860 /* also, FUNC_ID matching needs to be activated by userspace
861 * after it has re-checked that there is no possible module
862 * with a prod_id/manf_id/card_id match.
863 */
Dominik Brodowski94a819f2010-01-17 18:31:34 +0100864 mutex_lock(&dev->socket->ops_mutex);
865 ret = dev->allow_func_id_match;
866 mutex_unlock(&dev->socket->ops_mutex);
867
868 if (!ret) {
869 dev_dbg(&dev->dev,
870 "skipping FUNC_ID match until userspace ACK\n");
Dominik Brodowski1ad275e2005-06-27 16:28:06 -0700871 return 0;
Dominik Brodowski94a819f2010-01-17 18:31:34 +0100872 }
Dominik Brodowski1ad275e2005-06-27 16:28:06 -0700873 }
874
Dominik Brodowskiea7b3882005-06-27 16:28:07 -0700875 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) {
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200876 dev_dbg(&dev->dev, "device needs a fake CIS\n");
Dominik Brodowskidaa95172005-06-27 16:28:14 -0700877 if (!dev->socket->fake_cis)
Dominik Brodowskib1095af2010-04-08 20:10:21 +0200878 if (pcmcia_load_firmware(dev, did->cisfile))
879 return 0;
Dominik Brodowskiea7b3882005-06-27 16:28:07 -0700880 }
881
Dominik Brodowskif602ff72005-06-27 16:28:09 -0700882 if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) {
883 int i;
Dominik Brodowski9fea84f2009-12-07 22:11:45 +0100884 for (i = 0; i < 4; i++)
Dominik Brodowskif602ff72005-06-27 16:28:09 -0700885 if (dev->prod_id[i])
886 return 0;
887 if (dev->has_manf_id || dev->has_card_id || dev->has_func_id)
888 return 0;
889 }
890
Dominik Brodowski1ad275e2005-06-27 16:28:06 -0700891 return 1;
892}
893
894
Dominik Brodowski9fea84f2009-12-07 22:11:45 +0100895static int pcmcia_bus_match(struct device *dev, struct device_driver *drv)
896{
897 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
898 struct pcmcia_driver *p_drv = to_pcmcia_drv(drv);
Joe Perchese9fb13b2011-05-03 19:29:00 -0700899 const struct pcmcia_device_id *did = p_drv->id_table;
Bernhard Walle6179b552007-05-06 14:48:44 -0700900 struct pcmcia_dynid *dynid;
901
902 /* match dynamic devices first */
Dominik Brodowski3f565232010-01-16 13:06:40 +0100903 mutex_lock(&p_drv->dynids.lock);
Bernhard Walle6179b552007-05-06 14:48:44 -0700904 list_for_each_entry(dynid, &p_drv->dynids.list, node) {
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200905 dev_dbg(dev, "trying to match to %s\n", drv->name);
Bernhard Walle6179b552007-05-06 14:48:44 -0700906 if (pcmcia_devmatch(p_dev, &dynid->id)) {
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200907 dev_dbg(dev, "matched to %s\n", drv->name);
Dominik Brodowski3f565232010-01-16 13:06:40 +0100908 mutex_unlock(&p_drv->dynids.lock);
Bernhard Walle6179b552007-05-06 14:48:44 -0700909 return 1;
910 }
911 }
Dominik Brodowski3f565232010-01-16 13:06:40 +0100912 mutex_unlock(&p_drv->dynids.lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700913
Dominik Brodowski1ad275e2005-06-27 16:28:06 -0700914 while (did && did->match_flags) {
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200915 dev_dbg(dev, "trying to match to %s\n", drv->name);
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200916 if (pcmcia_devmatch(p_dev, did)) {
Dominik Brodowskid50dbec2009-10-23 12:51:28 +0200917 dev_dbg(dev, "matched to %s\n", drv->name);
Dominik Brodowski1ad275e2005-06-27 16:28:06 -0700918 return 1;
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +0200919 }
Dominik Brodowski1ad275e2005-06-27 16:28:06 -0700920 did++;
921 }
922
Linus Torvalds1da177e2005-04-16 15:20:36 -0700923 return 0;
924}
925
Kay Sievers7eff2e72007-08-14 15:15:12 +0200926static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
Dominik Brodowski840c2ac2005-06-27 16:28:04 -0700927{
928 struct pcmcia_device *p_dev;
Kay Sievers7eff2e72007-08-14 15:15:12 +0200929 int i;
Dominik Brodowski840c2ac2005-06-27 16:28:04 -0700930 u32 hash[4] = { 0, 0, 0, 0};
931
932 if (!dev)
933 return -ENODEV;
934
935 p_dev = to_pcmcia_dev(dev);
936
937 /* calculate hashes */
Dominik Brodowski9fea84f2009-12-07 22:11:45 +0100938 for (i = 0; i < 4; i++) {
Dominik Brodowski840c2ac2005-06-27 16:28:04 -0700939 if (!p_dev->prod_id[i])
940 continue;
941 hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i]));
942 }
943
Kay Sievers7eff2e72007-08-14 15:15:12 +0200944 if (add_uevent_var(env, "SOCKET_NO=%u", p_dev->socket->sock))
Dominik Brodowski840c2ac2005-06-27 16:28:04 -0700945 return -ENOMEM;
946
Kay Sievers7eff2e72007-08-14 15:15:12 +0200947 if (add_uevent_var(env, "DEVICE_NO=%02X", p_dev->device_no))
Dominik Brodowski840c2ac2005-06-27 16:28:04 -0700948 return -ENOMEM;
949
Kay Sievers7eff2e72007-08-14 15:15:12 +0200950 if (add_uevent_var(env, "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
Kay Sievers312c0042005-11-16 09:00:00 +0100951 "pa%08Xpb%08Xpc%08Xpd%08X",
952 p_dev->has_manf_id ? p_dev->manf_id : 0,
953 p_dev->has_card_id ? p_dev->card_id : 0,
954 p_dev->has_func_id ? p_dev->func_id : 0,
955 p_dev->func,
956 p_dev->device_no,
957 hash[0],
958 hash[1],
959 hash[2],
960 hash[3]))
Dominik Brodowski840c2ac2005-06-27 16:28:04 -0700961 return -ENOMEM;
962
Dominik Brodowski840c2ac2005-06-27 16:28:04 -0700963 return 0;
964}
965
Alan Stern3f8df782007-07-12 16:57:22 -0400966/************************ runtime PM support ***************************/
967
968static int pcmcia_dev_suspend(struct device *dev, pm_message_t state);
969static int pcmcia_dev_resume(struct device *dev);
970
971static int runtime_suspend(struct device *dev)
972{
973 int rc;
974
Greg Kroah-Hartman8e9394c2010-02-17 10:57:05 -0800975 device_lock(dev);
Alan Stern3f8df782007-07-12 16:57:22 -0400976 rc = pcmcia_dev_suspend(dev, PMSG_SUSPEND);
Greg Kroah-Hartman8e9394c2010-02-17 10:57:05 -0800977 device_unlock(dev);
Alan Stern3f8df782007-07-12 16:57:22 -0400978 return rc;
979}
980
Dominik Brodowski933a8382009-12-29 18:21:39 +0100981static int runtime_resume(struct device *dev)
Alan Stern3f8df782007-07-12 16:57:22 -0400982{
983 int rc;
984
Greg Kroah-Hartman8e9394c2010-02-17 10:57:05 -0800985 device_lock(dev);
Alan Stern3f8df782007-07-12 16:57:22 -0400986 rc = pcmcia_dev_resume(dev);
Greg Kroah-Hartman8e9394c2010-02-17 10:57:05 -0800987 device_unlock(dev);
Dominik Brodowski933a8382009-12-29 18:21:39 +0100988 return rc;
Alan Stern3f8df782007-07-12 16:57:22 -0400989}
990
Linus Torvalds1da177e2005-04-16 15:20:36 -0700991/************************ per-device sysfs output ***************************/
992
993#define pcmcia_device_attr(field, test, format) \
Yani Ioannoue404e272005-05-17 06:42:58 -0400994static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700995{ \
996 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
Dominik Brodowski9fea84f2009-12-07 22:11:45 +0100997 return p_dev->test ? sprintf(buf, format, p_dev->field) : -ENODEV; \
Greg Kroah-Hartmanb9b2f362013-10-06 23:55:46 -0700998} \
999static DEVICE_ATTR_RO(field);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001000
1001#define pcmcia_device_stringattr(name, field) \
Yani Ioannoue404e272005-05-17 06:42:58 -04001002static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \
Linus Torvalds1da177e2005-04-16 15:20:36 -07001003{ \
1004 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
Dominik Brodowski9fea84f2009-12-07 22:11:45 +01001005 return p_dev->field ? sprintf(buf, "%s\n", p_dev->field) : -ENODEV; \
Greg Kroah-Hartmanb9b2f362013-10-06 23:55:46 -07001006} \
1007static DEVICE_ATTR_RO(name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001008
Linus Torvalds1da177e2005-04-16 15:20:36 -07001009pcmcia_device_attr(func_id, has_func_id, "0x%02x\n");
1010pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n");
1011pcmcia_device_attr(card_id, has_card_id, "0x%04x\n");
1012pcmcia_device_stringattr(prod_id1, prod_id[0]);
1013pcmcia_device_stringattr(prod_id2, prod_id[1]);
1014pcmcia_device_stringattr(prod_id3, prod_id[2]);
1015pcmcia_device_stringattr(prod_id4, prod_id[3]);
1016
Greg Kroah-Hartmanb9b2f362013-10-06 23:55:46 -07001017static ssize_t function_show(struct device *dev, struct device_attribute *attr,
1018 char *buf)
1019{
1020 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1021 return p_dev->socket ? sprintf(buf, "0x%02x\n", p_dev->func) : -ENODEV;
1022}
1023static DEVICE_ATTR_RO(function);
1024
1025static ssize_t resources_show(struct device *dev,
1026 struct device_attribute *attr, char *buf)
Dominik Brodowski8f677ea2010-07-25 11:10:29 +02001027{
1028 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1029 char *str = buf;
1030 int i;
1031
1032 for (i = 0; i < PCMCIA_NUM_RESOURCES; i++)
1033 str += sprintf(str, "%pr\n", p_dev->resource[i]);
1034
1035 return str - buf;
1036}
Greg Kroah-Hartmanb9b2f362013-10-06 23:55:46 -07001037static DEVICE_ATTR_RO(resources);
Dominik Brodowskidb1019c2006-01-10 19:19:37 +01001038
Greg Kroah-Hartmanb9b2f362013-10-06 23:55:46 -07001039static ssize_t pm_state_show(struct device *dev, struct device_attribute *attr, char *buf)
Dominik Brodowskidb1019c2006-01-10 19:19:37 +01001040{
1041 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1042
Dominik Brodowskif6fbe012006-01-20 15:10:23 +01001043 if (p_dev->suspended)
Dominik Brodowskidb1019c2006-01-10 19:19:37 +01001044 return sprintf(buf, "off\n");
1045 else
1046 return sprintf(buf, "on\n");
1047}
1048
Greg Kroah-Hartmanb9b2f362013-10-06 23:55:46 -07001049static ssize_t pm_state_store(struct device *dev, struct device_attribute *attr,
1050 const char *buf, size_t count)
Dominik Brodowskidb1019c2006-01-10 19:19:37 +01001051{
1052 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1053 int ret = 0;
1054
Dominik Brodowski9fea84f2009-12-07 22:11:45 +01001055 if (!count)
1056 return -EINVAL;
Dominik Brodowskidb1019c2006-01-10 19:19:37 +01001057
Dominik Brodowskif6fbe012006-01-20 15:10:23 +01001058 if ((!p_dev->suspended) && !strncmp(buf, "off", 3))
Alan Stern3f8df782007-07-12 16:57:22 -04001059 ret = runtime_suspend(dev);
Dominik Brodowskif6fbe012006-01-20 15:10:23 +01001060 else if (p_dev->suspended && !strncmp(buf, "on", 2))
Dominik Brodowski933a8382009-12-29 18:21:39 +01001061 ret = runtime_resume(dev);
Dominik Brodowskidb1019c2006-01-10 19:19:37 +01001062
1063 return ret ? ret : count;
1064}
Greg Kroah-Hartmanb9b2f362013-10-06 23:55:46 -07001065static DEVICE_ATTR_RW(pm_state);
Dominik Brodowskidb1019c2006-01-10 19:19:37 +01001066
Dominik Brodowski37045112005-06-30 02:58:47 -07001067static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
Dominik Brodowski3248ff42005-06-27 16:29:01 -07001068{
1069 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1070 int i;
1071 u32 hash[4] = { 0, 0, 0, 0};
Dominik Brodowskia5b55772005-06-27 16:28:10 -07001072
Dominik Brodowski3248ff42005-06-27 16:29:01 -07001073 /* calculate hashes */
Dominik Brodowski9fea84f2009-12-07 22:11:45 +01001074 for (i = 0; i < 4; i++) {
Dominik Brodowski3248ff42005-06-27 16:29:01 -07001075 if (!p_dev->prod_id[i])
1076 continue;
Dominik Brodowski9fea84f2009-12-07 22:11:45 +01001077 hash[i] = crc32(0, p_dev->prod_id[i],
1078 strlen(p_dev->prod_id[i]));
Dominik Brodowski3248ff42005-06-27 16:29:01 -07001079 }
1080 return sprintf(buf, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
1081 "pa%08Xpb%08Xpc%08Xpd%08X\n",
1082 p_dev->has_manf_id ? p_dev->manf_id : 0,
1083 p_dev->has_card_id ? p_dev->card_id : 0,
1084 p_dev->has_func_id ? p_dev->func_id : 0,
1085 p_dev->func, p_dev->device_no,
1086 hash[0], hash[1], hash[2], hash[3]);
1087}
Greg Kroah-Hartmanb9b2f362013-10-06 23:55:46 -07001088static DEVICE_ATTR_RO(modalias);
Dominik Brodowski3248ff42005-06-27 16:29:01 -07001089
Greg Kroah-Hartmanb9b2f362013-10-06 23:55:46 -07001090static ssize_t allow_func_id_match_store(struct device *dev,
Dominik Brodowski3248ff42005-06-27 16:29:01 -07001091 struct device_attribute *attr, const char *buf, size_t count)
Dominik Brodowskia5b55772005-06-27 16:28:10 -07001092{
1093 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
Dominik Brodowskidb1019c2006-01-10 19:19:37 +01001094
1095 if (!count)
1096 return -EINVAL;
Dominik Brodowskia5b55772005-06-27 16:28:10 -07001097
Dominik Brodowski94a819f2010-01-17 18:31:34 +01001098 mutex_lock(&p_dev->socket->ops_mutex);
Dominik Brodowskia5b55772005-06-27 16:28:10 -07001099 p_dev->allow_func_id_match = 1;
Dominik Brodowski94a819f2010-01-17 18:31:34 +01001100 mutex_unlock(&p_dev->socket->ops_mutex);
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +01001101 pcmcia_parse_uevents(p_dev->socket, PCMCIA_UEVENT_REQUERY);
Dominik Brodowskia5b55772005-06-27 16:28:10 -07001102
1103 return count;
1104}
Greg Kroah-Hartmanb9b2f362013-10-06 23:55:46 -07001105static DEVICE_ATTR_WO(allow_func_id_match);
Dominik Brodowskia5b55772005-06-27 16:28:10 -07001106
Greg Kroah-Hartmanb9b2f362013-10-06 23:55:46 -07001107static struct attribute *pcmcia_dev_attrs[] = {
1108 &dev_attr_resources.attr,
1109 &dev_attr_pm_state.attr,
1110 &dev_attr_function.attr,
1111 &dev_attr_func_id.attr,
1112 &dev_attr_manf_id.attr,
1113 &dev_attr_card_id.attr,
1114 &dev_attr_prod_id1.attr,
1115 &dev_attr_prod_id2.attr,
1116 &dev_attr_prod_id3.attr,
1117 &dev_attr_prod_id4.attr,
1118 &dev_attr_modalias.attr,
1119 &dev_attr_allow_func_id_match.attr,
1120 NULL,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001121};
Greg Kroah-Hartmanb9b2f362013-10-06 23:55:46 -07001122ATTRIBUTE_GROUPS(pcmcia_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001123
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001124/* PM support, also needed for reset */
1125
Dominik Brodowski9fea84f2009-12-07 22:11:45 +01001126static int pcmcia_dev_suspend(struct device *dev, pm_message_t state)
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001127{
1128 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1129 struct pcmcia_driver *p_drv = NULL;
Dominik Brodowskif6fbe012006-01-20 15:10:23 +01001130 int ret = 0;
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001131
Dominik Brodowski94a819f2010-01-17 18:31:34 +01001132 mutex_lock(&p_dev->socket->ops_mutex);
1133 if (p_dev->suspended) {
1134 mutex_unlock(&p_dev->socket->ops_mutex);
David Brownelld6b4fa62008-02-04 22:27:37 -08001135 return 0;
Dominik Brodowski94a819f2010-01-17 18:31:34 +01001136 }
1137 p_dev->suspended = 1;
1138 mutex_unlock(&p_dev->socket->ops_mutex);
David Brownelld6b4fa62008-02-04 22:27:37 -08001139
Dominik Brodowskid50dbec2009-10-23 12:51:28 +02001140 dev_dbg(dev, "suspending\n");
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +02001141
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001142 if (dev->driver)
1143 p_drv = to_pcmcia_drv(dev->driver);
1144
Dominik Brodowskie2d40962006-03-02 00:09:29 +01001145 if (!p_drv)
1146 goto out;
1147
1148 if (p_drv->suspend) {
Dominik Brodowski8661bb52006-03-02 00:02:33 +01001149 ret = p_drv->suspend(p_dev);
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +02001150 if (ret) {
Dominik Brodowskiac449d62008-08-02 18:33:56 +02001151 dev_printk(KERN_ERR, dev,
1152 "pcmcia: device %s (driver %s) did "
1153 "not want to go to sleep (%d)\n",
Dominik Brodowski2e9b9812010-08-08 11:36:26 +02001154 p_dev->devname, p_drv->name, ret);
Dominik Brodowski94a819f2010-01-17 18:31:34 +01001155 mutex_lock(&p_dev->socket->ops_mutex);
1156 p_dev->suspended = 0;
1157 mutex_unlock(&p_dev->socket->ops_mutex);
Dominik Brodowskif6fbe012006-01-20 15:10:23 +01001158 goto out;
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +02001159 }
Dominik Brodowski8661bb52006-03-02 00:02:33 +01001160 }
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001161
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +02001162 if (p_dev->device_no == p_dev->func) {
Dominik Brodowskid50dbec2009-10-23 12:51:28 +02001163 dev_dbg(dev, "releasing configuration\n");
Dominik Brodowskie2d40962006-03-02 00:09:29 +01001164 pcmcia_release_configuration(p_dev);
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +02001165 }
Dominik Brodowskie2d40962006-03-02 00:09:29 +01001166
Dominik Brodowskif6fbe012006-01-20 15:10:23 +01001167 out:
Dominik Brodowskif6fbe012006-01-20 15:10:23 +01001168 return ret;
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001169}
1170
1171
Dominik Brodowski9fea84f2009-12-07 22:11:45 +01001172static int pcmcia_dev_resume(struct device *dev)
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001173{
1174 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
Dominik Brodowski9fea84f2009-12-07 22:11:45 +01001175 struct pcmcia_driver *p_drv = NULL;
Dominik Brodowskif6fbe012006-01-20 15:10:23 +01001176 int ret = 0;
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001177
Dominik Brodowski94a819f2010-01-17 18:31:34 +01001178 mutex_lock(&p_dev->socket->ops_mutex);
1179 if (!p_dev->suspended) {
1180 mutex_unlock(&p_dev->socket->ops_mutex);
David Brownelld6b4fa62008-02-04 22:27:37 -08001181 return 0;
Dominik Brodowski94a819f2010-01-17 18:31:34 +01001182 }
1183 p_dev->suspended = 0;
1184 mutex_unlock(&p_dev->socket->ops_mutex);
David Brownelld6b4fa62008-02-04 22:27:37 -08001185
Dominik Brodowskid50dbec2009-10-23 12:51:28 +02001186 dev_dbg(dev, "resuming\n");
Dominik Brodowskid9d9ea02006-12-02 22:11:44 +02001187
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001188 if (dev->driver)
1189 p_drv = to_pcmcia_drv(dev->driver);
1190
Dominik Brodowskie2d40962006-03-02 00:09:29 +01001191 if (!p_drv)
1192 goto out;
1193
1194 if (p_dev->device_no == p_dev->func) {
Dominik Brodowskid50dbec2009-10-23 12:51:28 +02001195 dev_dbg(dev, "requesting configuration\n");
Dominik Brodowski1ac71e52010-07-29 19:27:09 +02001196 ret = pcmcia_enable_device(p_dev);
Dominik Brodowskie2d40962006-03-02 00:09:29 +01001197 if (ret)
1198 goto out;
Dominik Brodowski8661bb52006-03-02 00:02:33 +01001199 }
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001200
Dominik Brodowskie2d40962006-03-02 00:09:29 +01001201 if (p_drv->resume)
1202 ret = p_drv->resume(p_dev);
1203
Dominik Brodowskif6fbe012006-01-20 15:10:23 +01001204 out:
Dominik Brodowskif6fbe012006-01-20 15:10:23 +01001205 return ret;
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001206}
1207
1208
1209static int pcmcia_bus_suspend_callback(struct device *dev, void * _data)
1210{
1211 struct pcmcia_socket *skt = _data;
1212 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1213
Alan Stern3f8df782007-07-12 16:57:22 -04001214 if (p_dev->socket != skt || p_dev->suspended)
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001215 return 0;
1216
Alan Stern3f8df782007-07-12 16:57:22 -04001217 return runtime_suspend(dev);
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001218}
1219
1220static int pcmcia_bus_resume_callback(struct device *dev, void * _data)
1221{
1222 struct pcmcia_socket *skt = _data;
1223 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1224
Alan Stern3f8df782007-07-12 16:57:22 -04001225 if (p_dev->socket != skt || !p_dev->suspended)
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001226 return 0;
1227
Alan Stern3f8df782007-07-12 16:57:22 -04001228 runtime_resume(dev);
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001229
1230 return 0;
1231}
1232
1233static int pcmcia_bus_resume(struct pcmcia_socket *skt)
1234{
Dominik Brodowskid50dbec2009-10-23 12:51:28 +02001235 dev_dbg(&skt->dev, "resuming socket %d\n", skt->sock);
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001236 bus_for_each_dev(&pcmcia_bus_type, NULL, skt, pcmcia_bus_resume_callback);
1237 return 0;
1238}
1239
1240static int pcmcia_bus_suspend(struct pcmcia_socket *skt)
1241{
Dominik Brodowskid50dbec2009-10-23 12:51:28 +02001242 dev_dbg(&skt->dev, "suspending socket %d\n", skt->sock);
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001243 if (bus_for_each_dev(&pcmcia_bus_type, NULL, skt,
1244 pcmcia_bus_suspend_callback)) {
1245 pcmcia_bus_resume(skt);
1246 return -EIO;
1247 }
1248 return 0;
1249}
1250
Dominik Brodowski7b24e792010-07-11 10:26:53 +02001251static int pcmcia_bus_remove(struct pcmcia_socket *skt)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001252{
Dominik Brodowski7b24e792010-07-11 10:26:53 +02001253 atomic_set(&skt->present, 0);
1254 pcmcia_card_remove(skt, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001255
Dominik Brodowski7b24e792010-07-11 10:26:53 +02001256 mutex_lock(&skt->ops_mutex);
1257 destroy_cis_cache(skt);
1258 pcmcia_cleanup_irq(skt);
1259 mutex_unlock(&skt->ops_mutex);
1260
1261 return 0;
1262}
1263
1264static int pcmcia_bus_add(struct pcmcia_socket *skt)
1265{
1266 atomic_set(&skt->present, 1);
1267
1268 mutex_lock(&skt->ops_mutex);
Dominik Brodowskice3f9d72010-07-21 14:43:05 +02001269 skt->pcmcia_pfc = 0;
Dominik Brodowski7b24e792010-07-11 10:26:53 +02001270 destroy_cis_cache(skt); /* to be on the safe side... */
1271 mutex_unlock(&skt->ops_mutex);
1272
1273 pcmcia_card_add(skt);
1274
1275 return 0;
1276}
1277
1278static int pcmcia_bus_early_resume(struct pcmcia_socket *skt)
1279{
Russell King025e4ab2012-02-08 17:13:41 -08001280 if (!verify_cis_cache(skt))
Dominik Brodowski7b24e792010-07-11 10:26:53 +02001281 return 0;
Florin Malita16174062006-05-24 21:21:31 -04001282
Dominik Brodowski7b24e792010-07-11 10:26:53 +02001283 dev_dbg(&skt->dev, "cis mismatch - different card\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001284
Dominik Brodowski7b24e792010-07-11 10:26:53 +02001285 /* first, remove the card */
1286 pcmcia_bus_remove(skt);
Dominik Brodowskif8cfa612005-11-14 21:25:51 +01001287
Dominik Brodowski7b24e792010-07-11 10:26:53 +02001288 mutex_lock(&skt->ops_mutex);
1289 destroy_cis_cache(skt);
1290 kfree(skt->fake_cis);
1291 skt->fake_cis = NULL;
1292 skt->functions = 0;
1293 mutex_unlock(&skt->ops_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001294
Dominik Brodowski7b24e792010-07-11 10:26:53 +02001295 /* now, add the new card */
1296 pcmcia_bus_add(skt);
1297 return 0;
1298}
Dominik Brodowski88b060d2010-01-02 14:14:23 +01001299
Linus Torvalds1da177e2005-04-16 15:20:36 -07001300
Dominik Brodowski04de0812010-04-20 14:49:01 +02001301/*
1302 * NOTE: This is racy. There's no guarantee the card will still be
1303 * physically present, even if the call to this function returns
1304 * non-NULL. Furthermore, the device driver most likely is unbound
1305 * almost immediately, so the timeframe where pcmcia_dev_present
1306 * returns NULL is probably really really small.
1307 */
Dominik Brodowski9fea84f2009-12-07 22:11:45 +01001308struct pcmcia_device *pcmcia_dev_present(struct pcmcia_device *_p_dev)
Dominik Brodowski9940ec32006-03-05 11:04:33 +01001309{
1310 struct pcmcia_device *p_dev;
1311 struct pcmcia_device *ret = NULL;
1312
1313 p_dev = pcmcia_get_dev(_p_dev);
1314 if (!p_dev)
1315 return NULL;
1316
Dominik Brodowski04de0812010-04-20 14:49:01 +02001317 if (atomic_read(&p_dev->socket->present) != 0)
1318 ret = p_dev;
Dominik Brodowski9940ec32006-03-05 11:04:33 +01001319
Dominik Brodowski9940ec32006-03-05 11:04:33 +01001320 pcmcia_put_dev(p_dev);
1321 return ret;
1322}
1323EXPORT_SYMBOL(pcmcia_dev_present);
1324
1325
Dominik Brodowski90c6cdd2005-06-27 16:28:49 -07001326static struct pcmcia_callback pcmcia_bus_callback = {
1327 .owner = THIS_MODULE,
Dominik Brodowski7b24e792010-07-11 10:26:53 +02001328 .add = pcmcia_bus_add,
1329 .remove = pcmcia_bus_remove,
Dominik Brodowskiaf461fc2010-01-17 19:30:53 +01001330 .requery = pcmcia_requery,
Dominik Brodowski6e7b51a2010-01-06 13:57:43 +01001331 .validate = pccard_validate_cis,
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001332 .suspend = pcmcia_bus_suspend,
Dominik Brodowski7b24e792010-07-11 10:26:53 +02001333 .early_resume = pcmcia_bus_early_resume,
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001334 .resume = pcmcia_bus_resume,
Dominik Brodowski90c6cdd2005-06-27 16:28:49 -07001335};
1336
Bill Pemberton34cdf252012-11-19 13:23:12 -05001337static int pcmcia_bus_add_socket(struct device *dev,
Dmitry Torokhovd8539d82005-09-15 02:01:36 -05001338 struct class_interface *class_intf)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001339{
Greg Kroah-Hartman87373312006-09-12 17:00:10 +02001340 struct pcmcia_socket *socket = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001341 int ret;
1342
Dominik Brodowskidc109492005-06-27 16:28:50 -07001343 socket = pcmcia_get_socket(socket);
1344 if (!socket) {
Dominik Brodowskiac449d62008-08-02 18:33:56 +02001345 dev_printk(KERN_ERR, dev,
1346 "PCMCIA obtaining reference to socket failed\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001347 return -ENODEV;
1348 }
1349
Dominik Brodowski6e7b51a2010-01-06 13:57:43 +01001350 ret = sysfs_create_bin_file(&dev->kobj, &pccard_cis_attr);
1351 if (ret) {
1352 dev_printk(KERN_ERR, dev, "PCMCIA registration failed\n");
1353 pcmcia_put_socket(socket);
1354 return ret;
1355 }
1356
Dominik Brodowskidc109492005-06-27 16:28:50 -07001357 INIT_LIST_HEAD(&socket->devices_list);
Dominik Brodowskice3f9d72010-07-21 14:43:05 +02001358 socket->pcmcia_pfc = 0;
Dominik Brodowskidc109492005-06-27 16:28:50 -07001359 socket->device_count = 0;
Dominik Brodowskie4f1ac22010-06-19 14:33:56 +02001360 atomic_set(&socket->present, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001361
Dominik Brodowski90c6cdd2005-06-27 16:28:49 -07001362 ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001363 if (ret) {
Dominik Brodowskiac449d62008-08-02 18:33:56 +02001364 dev_printk(KERN_ERR, dev, "PCMCIA registration failed\n");
Dominik Brodowskidc109492005-06-27 16:28:50 -07001365 pcmcia_put_socket(socket);
Dominik Brodowski9fea84f2009-12-07 22:11:45 +01001366 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001367 }
1368
1369 return 0;
1370}
1371
Greg Kroah-Hartman87373312006-09-12 17:00:10 +02001372static void pcmcia_bus_remove_socket(struct device *dev,
Dmitry Torokhovd8539d82005-09-15 02:01:36 -05001373 struct class_interface *class_intf)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001374{
Greg Kroah-Hartman87373312006-09-12 17:00:10 +02001375 struct pcmcia_socket *socket = dev_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001376
Dominik Brodowskidc109492005-06-27 16:28:50 -07001377 if (!socket)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001378 return;
1379
1380 pccard_register_pcmcia(socket, NULL);
1381
Daniel Ritzdfbc9e92006-11-18 22:19:34 -08001382 /* unregister any unbound devices */
Daniel Ritz8e4d9dc2006-11-25 11:09:17 -08001383 mutex_lock(&socket->skt_mutex);
Daniel Ritzdfbc9e92006-11-18 22:19:34 -08001384 pcmcia_card_remove(socket, NULL);
Dominik Brodowski180c33e2010-01-02 17:34:09 +01001385 release_cis_mem(socket);
Daniel Ritz8e4d9dc2006-11-25 11:09:17 -08001386 mutex_unlock(&socket->skt_mutex);
Daniel Ritzdfbc9e92006-11-18 22:19:34 -08001387
Dominik Brodowski6e7b51a2010-01-06 13:57:43 +01001388 sysfs_remove_bin_file(&dev->kobj, &pccard_cis_attr);
1389
Dominik Brodowskidc109492005-06-27 16:28:50 -07001390 pcmcia_put_socket(socket);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001391
1392 return;
1393}
1394
1395
1396/* the pcmcia_bus_interface is used to handle pcmcia socket devices */
Sam Ravnborged49f5d2008-05-01 04:34:50 -07001397static struct class_interface pcmcia_bus_interface __refdata = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001398 .class = &pcmcia_socket_class,
Greg Kroah-Hartman87373312006-09-12 17:00:10 +02001399 .add_dev = &pcmcia_bus_add_socket,
1400 .remove_dev = &pcmcia_bus_remove_socket,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001401};
1402
1403
Dominik Brodowskie7a480d2005-06-27 16:28:47 -07001404struct bus_type pcmcia_bus_type = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001405 .name = "pcmcia",
Kay Sievers312c0042005-11-16 09:00:00 +01001406 .uevent = pcmcia_bus_uevent,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001407 .match = pcmcia_bus_match,
Greg Kroah-Hartmanb9b2f362013-10-06 23:55:46 -07001408 .dev_groups = pcmcia_dev_groups,
Russell King1d0baa32006-01-05 14:40:58 +00001409 .probe = pcmcia_device_probe,
1410 .remove = pcmcia_device_remove,
Dominik Brodowski8e9e7932006-01-06 00:02:03 +01001411 .suspend = pcmcia_dev_suspend,
1412 .resume = pcmcia_dev_resume,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001413};
Linus Torvalds1da177e2005-04-16 15:20:36 -07001414
1415
1416static int __init init_pcmcia_bus(void)
1417{
Randy Dunlapace7d472006-10-20 14:44:12 -07001418 int ret;
1419
Randy Dunlapace7d472006-10-20 14:44:12 -07001420 ret = bus_register(&pcmcia_bus_type);
1421 if (ret < 0) {
1422 printk(KERN_WARNING "pcmcia: bus_register error: %d\n", ret);
1423 return ret;
1424 }
1425 ret = class_interface_register(&pcmcia_bus_interface);
1426 if (ret < 0) {
1427 printk(KERN_WARNING
1428 "pcmcia: class_interface_register error: %d\n", ret);
1429 bus_unregister(&pcmcia_bus_type);
1430 return ret;
1431 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001432
Linus Torvalds1da177e2005-04-16 15:20:36 -07001433 return 0;
1434}
Dominik Brodowski9fea84f2009-12-07 22:11:45 +01001435fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that
Linus Torvalds1da177e2005-04-16 15:20:36 -07001436 * pcmcia_socket_class is already registered */
1437
1438
1439static void __exit exit_pcmcia_bus(void)
1440{
Dominik Brodowskie7a480d2005-06-27 16:28:47 -07001441 class_interface_unregister(&pcmcia_bus_interface);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001442
1443 bus_unregister(&pcmcia_bus_type);
1444}
1445module_exit(exit_pcmcia_bus);
1446
1447
Linus Torvalds1da177e2005-04-16 15:20:36 -07001448MODULE_ALIAS("ds");