1 /*======================================================================
3 A driver for PCMCIA parallel port adapters
5 (specifically, for the Quatech SPP-100 EPP card: other cards will
6 probably require driver tweaks)
8 parport_cs.c 1.29 2002/10/11 06:57:41
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/
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.
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.
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.
35 ======================================================================*/
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>
48 #include <linux/parport.h>
49 #include <linux/parport_pc.h>
51 #include <pcmcia/version.h>
52 #include <pcmcia/cs_types.h>
53 #include <pcmcia/cs.h>
54 #include <pcmcia/cistpl.h>
55 #include <pcmcia/ds.h>
56 #include <pcmcia/cisreg.h>
57 #include <pcmcia/ciscode.h>
59 /*====================================================================*/
61 /* Module parameters */
63 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
64 MODULE_DESCRIPTION("PCMCIA parallel port card driver");
65 MODULE_LICENSE("Dual MPL/GPL");
67 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
69 INT_MODULE_PARM(epp_mode, 1);
72 INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
73 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
74 static char *version =
75 "parport_cs.c 1.29 2002/10/11 06:57:41 (David Hinds)";
77 #define DEBUG(n, args...)
80 /*====================================================================*/
82 #define FORCE_EPP_MODE 0x08
84 typedef struct parport_info_t {
91 static dev_link_t *parport_attach(void);
92 static void parport_detach(dev_link_t *);
93 static void parport_config(dev_link_t *link);
94 static void parport_cs_release(dev_link_t *);
95 static int parport_event(event_t event, int priority,
96 event_callback_args_t *args);
98 static dev_info_t dev_info = "parport_cs";
99 static dev_link_t *dev_list = NULL;
101 /*======================================================================
103 parport_attach() creates an "instance" of the driver, allocating
104 local data structures for one device. The device is registered
107 ======================================================================*/
109 static dev_link_t *parport_attach(void)
111 parport_info_t *info;
113 client_reg_t client_reg;
116 DEBUG(0, "parport_attach()\n");
118 /* Create new parport device */
119 info = kmalloc(sizeof(*info), GFP_KERNEL);
120 if (!info) return NULL;
121 memset(info, 0, sizeof(*info));
122 link = &info->link; link->priv = info;
124 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
125 link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
126 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
127 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
128 link->conf.Attributes = CONF_ENABLE_IRQ;
130 link->conf.IntType = INT_MEMORY_AND_IO;
132 /* Register with Card Services */
133 link->next = dev_list;
135 client_reg.dev_info = &dev_info;
136 client_reg.EventMask =
137 CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
138 CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
139 CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
140 client_reg.event_handler = &parport_event;
141 client_reg.Version = 0x0210;
142 client_reg.event_callback_args.client_data = link;
143 ret = pcmcia_register_client(&link->handle, &client_reg);
144 if (ret != CS_SUCCESS) {
145 cs_error(link->handle, RegisterClient, ret);
146 parport_detach(link);
151 } /* parport_attach */
153 /*======================================================================
155 This deletes a driver "instance". The device is de-registered
156 with Card Services. If it has been released, all local data
157 structures are freed. Otherwise, the structures will be freed
158 when the device is released.
160 ======================================================================*/
162 static void parport_detach(dev_link_t *link)
167 DEBUG(0, "parport_detach(0x%p)\n", link);
169 /* Locate device structure */
170 for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
171 if (*linkp == link) break;
175 if (link->state & DEV_CONFIG)
176 parport_cs_release(link);
179 ret = pcmcia_deregister_client(link->handle);
180 if (ret != CS_SUCCESS)
181 cs_error(link->handle, DeregisterClient, ret);
184 /* Unlink, free device structure */
188 } /* parport_detach */
190 /*======================================================================
192 parport_config() is scheduled to run after a CARD_INSERTION event
193 is received, to configure the PCMCIA socket, and to make the
194 parport device available to the system.
196 ======================================================================*/
198 #define CS_CHECK(fn, ret) \
199 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
201 void parport_config(dev_link_t *link)
203 client_handle_t handle = link->handle;
204 parport_info_t *info = link->priv;
209 cistpl_cftable_entry_t *cfg = &parse.cftable_entry;
210 cistpl_cftable_entry_t dflt = { 0 };
212 int last_ret, last_fn;
214 DEBUG(0, "parport_config(0x%p)\n", link);
216 tuple.TupleData = (cisdata_t *)buf;
217 tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
218 tuple.Attributes = 0;
219 tuple.DesiredTuple = CISTPL_CONFIG;
220 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
221 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
222 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
223 link->conf.ConfigBase = parse.config.base;
224 link->conf.Present = parse.config.rmask[0];
227 link->state |= DEV_CONFIG;
229 /* Not sure if this is right... look up the current Vcc */
230 CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(handle, &conf));
232 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
233 tuple.Attributes = 0;
234 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
236 if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
237 pcmcia_parse_tuple(handle, &tuple, &parse) != 0)
240 if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
241 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
242 link->conf.ConfigIndex = cfg->index;
244 link->conf.ConfigIndex |= FORCE_EPP_MODE;
245 link->io.BasePort1 = io->win[0].base;
246 link->io.NumPorts1 = io->win[0].len;
247 link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
249 link->io.BasePort2 = io->win[1].base;
250 link->io.NumPorts2 = io->win[1].len;
252 if (pcmcia_request_io(link->handle, &link->io) != 0)
254 /* If we've got this far, we're done */
259 if (cfg->flags & CISTPL_CFTABLE_DEFAULT) dflt = *cfg;
260 CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple));
263 CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq));
264 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));
266 release_region(link->io.BasePort1, link->io.NumPorts1);
267 if (link->io.NumPorts2)
268 release_region(link->io.BasePort2, link->io.NumPorts2);
269 p = parport_pc_probe_port(link->io.BasePort1, link->io.BasePort2,
270 link->irq.AssignedIRQ, PARPORT_DMA_NONE,
273 printk(KERN_NOTICE "parport_cs: parport_pc_probe_port() at "
274 "0x%3x, irq %u failed\n", link->io.BasePort1,
275 link->irq.AssignedIRQ);
279 p->modes |= PARPORT_MODE_PCSPP;
281 p->modes |= PARPORT_MODE_TRISTATE | PARPORT_MODE_EPP;
283 info->node.major = LP_MAJOR;
284 info->node.minor = p->number;
286 strcpy(info->node.dev_name, p->name);
287 link->dev = &info->node;
289 link->state &= ~DEV_CONFIG_PENDING;
293 cs_error(link->handle, last_fn, last_ret);
295 parport_cs_release(link);
296 link->state &= ~DEV_CONFIG_PENDING;
298 } /* parport_config */
300 /*======================================================================
302 After a card is removed, parport_cs_release() will unregister the
303 device, and release the PCMCIA configuration. If the device is
304 still open, this will be postponed until it is closed.
306 ======================================================================*/
308 void parport_cs_release(dev_link_t *link)
310 parport_info_t *info = link->priv;
312 DEBUG(0, "parport_release(0x%p)\n", link);
315 struct parport *p = info->port;
316 parport_pc_unregister_port(p);
317 request_region(link->io.BasePort1, link->io.NumPorts1,
318 info->node.dev_name);
319 if (link->io.NumPorts2)
320 request_region(link->io.BasePort2, link->io.NumPorts2,
321 info->node.dev_name);
326 pcmcia_release_configuration(link->handle);
327 pcmcia_release_io(link->handle, &link->io);
328 pcmcia_release_irq(link->handle, &link->irq);
330 link->state &= ~DEV_CONFIG;
332 } /* parport_cs_release */
334 /*======================================================================
336 The card status event handler. Mostly, this schedules other
337 stuff to run after an event is received.
339 ======================================================================*/
341 int parport_event(event_t event, int priority,
342 event_callback_args_t *args)
344 dev_link_t *link = args->client_data;
346 DEBUG(1, "parport_event(0x%06x)\n", event);
349 case CS_EVENT_CARD_REMOVAL:
350 link->state &= ~DEV_PRESENT;
351 if (link->state & DEV_CONFIG)
352 parport_cs_release(link);
354 case CS_EVENT_CARD_INSERTION:
355 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
356 parport_config(link);
358 case CS_EVENT_PM_SUSPEND:
359 link->state |= DEV_SUSPEND;
360 /* Fall through... */
361 case CS_EVENT_RESET_PHYSICAL:
362 if (link->state & DEV_CONFIG)
363 pcmcia_release_configuration(link->handle);
365 case CS_EVENT_PM_RESUME:
366 link->state &= ~DEV_SUSPEND;
367 /* Fall through... */
368 case CS_EVENT_CARD_RESET:
370 pcmcia_request_configuration(link->handle, &link->conf);
374 } /* parport_event */
376 static struct pcmcia_device_id parport_ids[] = {
377 PCMCIA_DEVICE_FUNC_ID(3),
378 PCMCIA_DEVICE_MANF_CARD(0x0137, 0x0003),
381 MODULE_DEVICE_TABLE(pcmcia, parport_ids);
383 static struct pcmcia_driver parport_cs_driver = {
384 .owner = THIS_MODULE,
386 .name = "parport_cs",
388 .attach = parport_attach,
389 .detach = parport_detach,
390 .id_table = parport_ids,
394 static int __init init_parport_cs(void)
396 return pcmcia_register_driver(&parport_cs_driver);
399 static void __exit exit_parport_cs(void)
401 pcmcia_unregister_driver(&parport_cs_driver);
402 BUG_ON(dev_list != NULL);
405 module_init(init_parport_cs);
406 module_exit(exit_parport_cs);