blob: 158d92563259174a0e8190339a3626c0aaf9436b [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*======================================================================
2
3 A driver for PCMCIA parallel port adapters
4
5 (specifically, for the Quatech SPP-100 EPP card: other cards will
6 probably require driver tweaks)
7
8 parport_cs.c 1.29 2002/10/11 06:57:41
9
10 The contents of this file are subject to the Mozilla Public
11 License Version 1.1 (the "License"); you may not use this file
12 except in compliance with the License. You may obtain a copy of
13 the License at http://www.mozilla.org/MPL/
14
15 Software distributed under the License is distributed on an "AS
16 IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
17 implied. See the License for the specific language governing
18 rights and limitations under the License.
19
20 The initial developer of the original code is David A. Hinds
21 <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
22 are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
23
24 Alternatively, the contents of this file may be used under the
25 terms of the GNU General Public License version 2 (the "GPL"), in
26 which case the provisions of the GPL are applicable instead of the
27 above. If you wish to allow the use of your version of this file
28 only under the terms of the GPL and not to allow others to use
29 your version of this file under the MPL, indicate your decision
30 by deleting the provisions above and replace them with the notice
31 and other provisions required by the GPL. If you do not delete
32 the provisions above, a recipient may use your version of this
33 file under either the MPL or the GPL.
34
35======================================================================*/
36
37#include <linux/kernel.h>
38#include <linux/module.h>
39#include <linux/init.h>
40#include <linux/sched.h>
41#include <linux/ptrace.h>
42#include <linux/slab.h>
43#include <linux/string.h>
44#include <linux/timer.h>
45#include <linux/ioport.h>
46#include <linux/major.h>
47
48#include <linux/parport.h>
49#include <linux/parport_pc.h>
50
Linus Torvalds1da177e2005-04-16 15:20:36 -070051#include <pcmcia/cs_types.h>
52#include <pcmcia/cs.h>
53#include <pcmcia/cistpl.h>
54#include <pcmcia/ds.h>
55#include <pcmcia/cisreg.h>
56#include <pcmcia/ciscode.h>
57
58/*====================================================================*/
59
60/* Module parameters */
61
62MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
63MODULE_DESCRIPTION("PCMCIA parallel port card driver");
64MODULE_LICENSE("Dual MPL/GPL");
65
66#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
67
68INT_MODULE_PARM(epp_mode, 1);
69
70#ifdef PCMCIA_DEBUG
71INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
72#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
73static char *version =
74"parport_cs.c 1.29 2002/10/11 06:57:41 (David Hinds)";
75#else
76#define DEBUG(n, args...)
77#endif
78
79/*====================================================================*/
80
81#define FORCE_EPP_MODE 0x08
82
83typedef struct parport_info_t {
84 dev_link_t link;
85 int ndev;
86 dev_node_t node;
87 struct parport *port;
88} parport_info_t;
89
Dominik Brodowskicc3b4862005-11-14 21:23:14 +010090static void parport_detach(struct pcmcia_device *p_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -070091static void parport_config(dev_link_t *link);
92static void parport_cs_release(dev_link_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -070093
94/*======================================================================
95
96 parport_attach() creates an "instance" of the driver, allocating
97 local data structures for one device. The device is registered
98 with Card Services.
99
100======================================================================*/
101
Dominik Brodowskif8cfa612005-11-14 21:25:51 +0100102static int parport_attach(struct pcmcia_device *p_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103{
104 parport_info_t *info;
105 dev_link_t *link;
Dominik Brodowskif8cfa612005-11-14 21:25:51 +0100106
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107 DEBUG(0, "parport_attach()\n");
108
109 /* Create new parport device */
110 info = kmalloc(sizeof(*info), GFP_KERNEL);
Dominik Brodowskif8cfa612005-11-14 21:25:51 +0100111 if (!info) return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112 memset(info, 0, sizeof(*info));
113 link = &info->link; link->priv = info;
114
115 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
116 link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
117 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
118 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
119 link->conf.Attributes = CONF_ENABLE_IRQ;
120 link->conf.Vcc = 50;
121 link->conf.IntType = INT_MEMORY_AND_IO;
Dominik Brodowskif8cfa612005-11-14 21:25:51 +0100122
123 link->handle = p_dev;
124 p_dev->instance = link;
125
126 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
127 parport_config(link);
128
129 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130} /* parport_attach */
131
132/*======================================================================
133
134 This deletes a driver "instance". The device is de-registered
135 with Card Services. If it has been released, all local data
136 structures are freed. Otherwise, the structures will be freed
137 when the device is released.
138
139======================================================================*/
140
Dominik Brodowskicc3b4862005-11-14 21:23:14 +0100141static void parport_detach(struct pcmcia_device *p_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142{
Dominik Brodowskicc3b4862005-11-14 21:23:14 +0100143 dev_link_t *link = dev_to_instance(p_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144
145 DEBUG(0, "parport_detach(0x%p)\n", link);
Dominik Brodowskicc3b4862005-11-14 21:23:14 +0100146
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147 if (link->state & DEV_CONFIG)
148 parport_cs_release(link);
Dominik Brodowskicc3b4862005-11-14 21:23:14 +0100149
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150 kfree(link->priv);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151} /* parport_detach */
152
153/*======================================================================
154
155 parport_config() is scheduled to run after a CARD_INSERTION event
156 is received, to configure the PCMCIA socket, and to make the
157 parport device available to the system.
158
159======================================================================*/
160
161#define CS_CHECK(fn, ret) \
162do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
163
164void parport_config(dev_link_t *link)
165{
166 client_handle_t handle = link->handle;
167 parport_info_t *info = link->priv;
168 tuple_t tuple;
169 u_short buf[128];
170 cisparse_t parse;
171 config_info_t conf;
172 cistpl_cftable_entry_t *cfg = &parse.cftable_entry;
173 cistpl_cftable_entry_t dflt = { 0 };
174 struct parport *p;
175 int last_ret, last_fn;
176
177 DEBUG(0, "parport_config(0x%p)\n", link);
178
179 tuple.TupleData = (cisdata_t *)buf;
180 tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
181 tuple.Attributes = 0;
182 tuple.DesiredTuple = CISTPL_CONFIG;
183 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
184 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
185 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
186 link->conf.ConfigBase = parse.config.base;
187 link->conf.Present = parse.config.rmask[0];
188
189 /* Configure card */
190 link->state |= DEV_CONFIG;
191
192 /* Not sure if this is right... look up the current Vcc */
193 CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(handle, &conf));
194
195 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
196 tuple.Attributes = 0;
197 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
198 while (1) {
199 if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
200 pcmcia_parse_tuple(handle, &tuple, &parse) != 0)
201 goto next_entry;
202
203 if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
204 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
205 link->conf.ConfigIndex = cfg->index;
206 if (epp_mode)
207 link->conf.ConfigIndex |= FORCE_EPP_MODE;
208 link->io.BasePort1 = io->win[0].base;
209 link->io.NumPorts1 = io->win[0].len;
210 link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
211 if (io->nwin == 2) {
212 link->io.BasePort2 = io->win[1].base;
213 link->io.NumPorts2 = io->win[1].len;
214 }
215 if (pcmcia_request_io(link->handle, &link->io) != 0)
216 goto next_entry;
217 /* If we've got this far, we're done */
218 break;
219 }
220
221 next_entry:
222 if (cfg->flags & CISTPL_CFTABLE_DEFAULT) dflt = *cfg;
223 CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple));
224 }
225
226 CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq));
227 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));
228
229 release_region(link->io.BasePort1, link->io.NumPorts1);
230 if (link->io.NumPorts2)
231 release_region(link->io.BasePort2, link->io.NumPorts2);
232 p = parport_pc_probe_port(link->io.BasePort1, link->io.BasePort2,
233 link->irq.AssignedIRQ, PARPORT_DMA_NONE,
234 NULL);
235 if (p == NULL) {
236 printk(KERN_NOTICE "parport_cs: parport_pc_probe_port() at "
237 "0x%3x, irq %u failed\n", link->io.BasePort1,
238 link->irq.AssignedIRQ);
239 goto failed;
240 }
241
242 p->modes |= PARPORT_MODE_PCSPP;
243 if (epp_mode)
244 p->modes |= PARPORT_MODE_TRISTATE | PARPORT_MODE_EPP;
245 info->ndev = 1;
246 info->node.major = LP_MAJOR;
247 info->node.minor = p->number;
248 info->port = p;
249 strcpy(info->node.dev_name, p->name);
250 link->dev = &info->node;
251
252 link->state &= ~DEV_CONFIG_PENDING;
253 return;
254
255cs_failed:
256 cs_error(link->handle, last_fn, last_ret);
257failed:
258 parport_cs_release(link);
259 link->state &= ~DEV_CONFIG_PENDING;
260
261} /* parport_config */
262
263/*======================================================================
264
265 After a card is removed, parport_cs_release() will unregister the
266 device, and release the PCMCIA configuration. If the device is
267 still open, this will be postponed until it is closed.
268
269======================================================================*/
270
271void parport_cs_release(dev_link_t *link)
272{
273 parport_info_t *info = link->priv;
274
275 DEBUG(0, "parport_release(0x%p)\n", link);
276
277 if (info->ndev) {
278 struct parport *p = info->port;
279 parport_pc_unregister_port(p);
280 request_region(link->io.BasePort1, link->io.NumPorts1,
281 info->node.dev_name);
282 if (link->io.NumPorts2)
283 request_region(link->io.BasePort2, link->io.NumPorts2,
284 info->node.dev_name);
285 }
286 info->ndev = 0;
287 link->dev = NULL;
288
289 pcmcia_release_configuration(link->handle);
290 pcmcia_release_io(link->handle, &link->io);
291 pcmcia_release_irq(link->handle, &link->irq);
292
293 link->state &= ~DEV_CONFIG;
294
295} /* parport_cs_release */
296
Dominik Brodowski98e4c282005-11-14 21:21:18 +0100297static int parport_suspend(struct pcmcia_device *dev)
298{
299 dev_link_t *link = dev_to_instance(dev);
300
301 link->state |= DEV_SUSPEND;
302 if (link->state & DEV_CONFIG)
303 pcmcia_release_configuration(link->handle);
304
305 return 0;
306}
307
308static int parport_resume(struct pcmcia_device *dev)
309{
310 dev_link_t *link = dev_to_instance(dev);
311
312 link->state &= ~DEV_SUSPEND;
313 if (DEV_OK(link))
314 pcmcia_request_configuration(link->handle, &link->conf);
315
316 return 0;
317}
318
Dominik Brodowski476835a2005-06-27 16:28:29 -0700319static struct pcmcia_device_id parport_ids[] = {
320 PCMCIA_DEVICE_FUNC_ID(3),
321 PCMCIA_DEVICE_MANF_CARD(0x0137, 0x0003),
322 PCMCIA_DEVICE_NULL
323};
324MODULE_DEVICE_TABLE(pcmcia, parport_ids);
325
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326static struct pcmcia_driver parport_cs_driver = {
327 .owner = THIS_MODULE,
328 .drv = {
329 .name = "parport_cs",
330 },
Dominik Brodowskif8cfa612005-11-14 21:25:51 +0100331 .probe = parport_attach,
Dominik Brodowskicc3b4862005-11-14 21:23:14 +0100332 .remove = parport_detach,
Dominik Brodowski476835a2005-06-27 16:28:29 -0700333 .id_table = parport_ids,
Dominik Brodowski98e4c282005-11-14 21:21:18 +0100334 .suspend = parport_suspend,
335 .resume = parport_resume,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336};
337
338static int __init init_parport_cs(void)
339{
340 return pcmcia_register_driver(&parport_cs_driver);
341}
342
343static void __exit exit_parport_cs(void)
344{
345 pcmcia_unregister_driver(&parport_cs_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346}
347
348module_init(init_parport_cs);
349module_exit(exit_parport_cs);