Commit | Line | Data |
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1da177e4 LT |
1 | /*====================================================================== |
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 | ||
1da177e4 LT |
51 | #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 | ||
62 | MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>"); | |
63 | MODULE_DESCRIPTION("PCMCIA parallel port card driver"); | |
64 | MODULE_LICENSE("Dual MPL/GPL"); | |
65 | ||
66 | #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0) | |
67 | ||
68 | INT_MODULE_PARM(epp_mode, 1); | |
69 | ||
70 | #ifdef PCMCIA_DEBUG | |
71 | INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG); | |
72 | #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args) | |
73 | static 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 | ||
83 | typedef 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 | ||
90 | static dev_link_t *parport_attach(void); | |
cc3b4866 | 91 | static void parport_detach(struct pcmcia_device *p_dev); |
1da177e4 LT |
92 | static void parport_config(dev_link_t *link); |
93 | static void parport_cs_release(dev_link_t *); | |
94 | static int parport_event(event_t event, int priority, | |
95 | event_callback_args_t *args); | |
96 | ||
97 | static dev_info_t dev_info = "parport_cs"; | |
1da177e4 LT |
98 | |
99 | /*====================================================================== | |
100 | ||
101 | parport_attach() creates an "instance" of the driver, allocating | |
102 | local data structures for one device. The device is registered | |
103 | with Card Services. | |
104 | ||
105 | ======================================================================*/ | |
106 | ||
107 | static dev_link_t *parport_attach(void) | |
108 | { | |
109 | parport_info_t *info; | |
110 | dev_link_t *link; | |
111 | client_reg_t client_reg; | |
112 | int ret; | |
113 | ||
114 | DEBUG(0, "parport_attach()\n"); | |
115 | ||
116 | /* Create new parport device */ | |
117 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
118 | if (!info) return NULL; | |
119 | memset(info, 0, sizeof(*info)); | |
120 | link = &info->link; link->priv = info; | |
121 | ||
122 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; | |
123 | link->io.Attributes2 = IO_DATA_PATH_WIDTH_8; | |
124 | link->irq.Attributes = IRQ_TYPE_EXCLUSIVE; | |
125 | link->irq.IRQInfo1 = IRQ_LEVEL_ID; | |
126 | link->conf.Attributes = CONF_ENABLE_IRQ; | |
127 | link->conf.Vcc = 50; | |
128 | link->conf.IntType = INT_MEMORY_AND_IO; | |
129 | ||
130 | /* Register with Card Services */ | |
b4635811 | 131 | link->next = NULL; |
1da177e4 | 132 | client_reg.dev_info = &dev_info; |
1da177e4 LT |
133 | client_reg.Version = 0x0210; |
134 | client_reg.event_callback_args.client_data = link; | |
135 | ret = pcmcia_register_client(&link->handle, &client_reg); | |
136 | if (ret != CS_SUCCESS) { | |
137 | cs_error(link->handle, RegisterClient, ret); | |
cc3b4866 | 138 | parport_detach(link->handle); |
1da177e4 LT |
139 | return NULL; |
140 | } | |
141 | ||
142 | return link; | |
143 | } /* parport_attach */ | |
144 | ||
145 | /*====================================================================== | |
146 | ||
147 | This deletes a driver "instance". The device is de-registered | |
148 | with Card Services. If it has been released, all local data | |
149 | structures are freed. Otherwise, the structures will be freed | |
150 | when the device is released. | |
151 | ||
152 | ======================================================================*/ | |
153 | ||
cc3b4866 | 154 | static void parport_detach(struct pcmcia_device *p_dev) |
1da177e4 | 155 | { |
cc3b4866 | 156 | dev_link_t *link = dev_to_instance(p_dev); |
1da177e4 LT |
157 | |
158 | DEBUG(0, "parport_detach(0x%p)\n", link); | |
cc3b4866 | 159 | |
1da177e4 LT |
160 | if (link->state & DEV_CONFIG) |
161 | parport_cs_release(link); | |
cc3b4866 | 162 | |
1da177e4 | 163 | kfree(link->priv); |
1da177e4 LT |
164 | } /* parport_detach */ |
165 | ||
166 | /*====================================================================== | |
167 | ||
168 | parport_config() is scheduled to run after a CARD_INSERTION event | |
169 | is received, to configure the PCMCIA socket, and to make the | |
170 | parport device available to the system. | |
171 | ||
172 | ======================================================================*/ | |
173 | ||
174 | #define CS_CHECK(fn, ret) \ | |
175 | do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) | |
176 | ||
177 | void parport_config(dev_link_t *link) | |
178 | { | |
179 | client_handle_t handle = link->handle; | |
180 | parport_info_t *info = link->priv; | |
181 | tuple_t tuple; | |
182 | u_short buf[128]; | |
183 | cisparse_t parse; | |
184 | config_info_t conf; | |
185 | cistpl_cftable_entry_t *cfg = &parse.cftable_entry; | |
186 | cistpl_cftable_entry_t dflt = { 0 }; | |
187 | struct parport *p; | |
188 | int last_ret, last_fn; | |
189 | ||
190 | DEBUG(0, "parport_config(0x%p)\n", link); | |
191 | ||
192 | tuple.TupleData = (cisdata_t *)buf; | |
193 | tuple.TupleOffset = 0; tuple.TupleDataMax = 255; | |
194 | tuple.Attributes = 0; | |
195 | tuple.DesiredTuple = CISTPL_CONFIG; | |
196 | CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple)); | |
197 | CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple)); | |
198 | CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse)); | |
199 | link->conf.ConfigBase = parse.config.base; | |
200 | link->conf.Present = parse.config.rmask[0]; | |
201 | ||
202 | /* Configure card */ | |
203 | link->state |= DEV_CONFIG; | |
204 | ||
205 | /* Not sure if this is right... look up the current Vcc */ | |
206 | CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(handle, &conf)); | |
207 | ||
208 | tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; | |
209 | tuple.Attributes = 0; | |
210 | CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple)); | |
211 | while (1) { | |
212 | if (pcmcia_get_tuple_data(handle, &tuple) != 0 || | |
213 | pcmcia_parse_tuple(handle, &tuple, &parse) != 0) | |
214 | goto next_entry; | |
215 | ||
216 | if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) { | |
217 | cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io; | |
218 | link->conf.ConfigIndex = cfg->index; | |
219 | if (epp_mode) | |
220 | link->conf.ConfigIndex |= FORCE_EPP_MODE; | |
221 | link->io.BasePort1 = io->win[0].base; | |
222 | link->io.NumPorts1 = io->win[0].len; | |
223 | link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK; | |
224 | if (io->nwin == 2) { | |
225 | link->io.BasePort2 = io->win[1].base; | |
226 | link->io.NumPorts2 = io->win[1].len; | |
227 | } | |
228 | if (pcmcia_request_io(link->handle, &link->io) != 0) | |
229 | goto next_entry; | |
230 | /* If we've got this far, we're done */ | |
231 | break; | |
232 | } | |
233 | ||
234 | next_entry: | |
235 | if (cfg->flags & CISTPL_CFTABLE_DEFAULT) dflt = *cfg; | |
236 | CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple)); | |
237 | } | |
238 | ||
239 | CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq)); | |
240 | CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf)); | |
241 | ||
242 | release_region(link->io.BasePort1, link->io.NumPorts1); | |
243 | if (link->io.NumPorts2) | |
244 | release_region(link->io.BasePort2, link->io.NumPorts2); | |
245 | p = parport_pc_probe_port(link->io.BasePort1, link->io.BasePort2, | |
246 | link->irq.AssignedIRQ, PARPORT_DMA_NONE, | |
247 | NULL); | |
248 | if (p == NULL) { | |
249 | printk(KERN_NOTICE "parport_cs: parport_pc_probe_port() at " | |
250 | "0x%3x, irq %u failed\n", link->io.BasePort1, | |
251 | link->irq.AssignedIRQ); | |
252 | goto failed; | |
253 | } | |
254 | ||
255 | p->modes |= PARPORT_MODE_PCSPP; | |
256 | if (epp_mode) | |
257 | p->modes |= PARPORT_MODE_TRISTATE | PARPORT_MODE_EPP; | |
258 | info->ndev = 1; | |
259 | info->node.major = LP_MAJOR; | |
260 | info->node.minor = p->number; | |
261 | info->port = p; | |
262 | strcpy(info->node.dev_name, p->name); | |
263 | link->dev = &info->node; | |
264 | ||
265 | link->state &= ~DEV_CONFIG_PENDING; | |
266 | return; | |
267 | ||
268 | cs_failed: | |
269 | cs_error(link->handle, last_fn, last_ret); | |
270 | failed: | |
271 | parport_cs_release(link); | |
272 | link->state &= ~DEV_CONFIG_PENDING; | |
273 | ||
274 | } /* parport_config */ | |
275 | ||
276 | /*====================================================================== | |
277 | ||
278 | After a card is removed, parport_cs_release() will unregister the | |
279 | device, and release the PCMCIA configuration. If the device is | |
280 | still open, this will be postponed until it is closed. | |
281 | ||
282 | ======================================================================*/ | |
283 | ||
284 | void parport_cs_release(dev_link_t *link) | |
285 | { | |
286 | parport_info_t *info = link->priv; | |
287 | ||
288 | DEBUG(0, "parport_release(0x%p)\n", link); | |
289 | ||
290 | if (info->ndev) { | |
291 | struct parport *p = info->port; | |
292 | parport_pc_unregister_port(p); | |
293 | request_region(link->io.BasePort1, link->io.NumPorts1, | |
294 | info->node.dev_name); | |
295 | if (link->io.NumPorts2) | |
296 | request_region(link->io.BasePort2, link->io.NumPorts2, | |
297 | info->node.dev_name); | |
298 | } | |
299 | info->ndev = 0; | |
300 | link->dev = NULL; | |
301 | ||
302 | pcmcia_release_configuration(link->handle); | |
303 | pcmcia_release_io(link->handle, &link->io); | |
304 | pcmcia_release_irq(link->handle, &link->irq); | |
305 | ||
306 | link->state &= ~DEV_CONFIG; | |
307 | ||
308 | } /* parport_cs_release */ | |
309 | ||
98e4c28b DB |
310 | static int parport_suspend(struct pcmcia_device *dev) |
311 | { | |
312 | dev_link_t *link = dev_to_instance(dev); | |
313 | ||
314 | link->state |= DEV_SUSPEND; | |
315 | if (link->state & DEV_CONFIG) | |
316 | pcmcia_release_configuration(link->handle); | |
317 | ||
318 | return 0; | |
319 | } | |
320 | ||
321 | static int parport_resume(struct pcmcia_device *dev) | |
322 | { | |
323 | dev_link_t *link = dev_to_instance(dev); | |
324 | ||
325 | link->state &= ~DEV_SUSPEND; | |
326 | if (DEV_OK(link)) | |
327 | pcmcia_request_configuration(link->handle, &link->conf); | |
328 | ||
329 | return 0; | |
330 | } | |
331 | ||
1da177e4 LT |
332 | /*====================================================================== |
333 | ||
334 | The card status event handler. Mostly, this schedules other | |
335 | stuff to run after an event is received. | |
336 | ||
337 | ======================================================================*/ | |
338 | ||
339 | int parport_event(event_t event, int priority, | |
340 | event_callback_args_t *args) | |
341 | { | |
342 | dev_link_t *link = args->client_data; | |
343 | ||
344 | DEBUG(1, "parport_event(0x%06x)\n", event); | |
345 | ||
346 | switch (event) { | |
1da177e4 LT |
347 | case CS_EVENT_CARD_INSERTION: |
348 | link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; | |
349 | parport_config(link); | |
350 | break; | |
1da177e4 LT |
351 | } |
352 | return 0; | |
353 | } /* parport_event */ | |
354 | ||
476835af DB |
355 | static struct pcmcia_device_id parport_ids[] = { |
356 | PCMCIA_DEVICE_FUNC_ID(3), | |
357 | PCMCIA_DEVICE_MANF_CARD(0x0137, 0x0003), | |
358 | PCMCIA_DEVICE_NULL | |
359 | }; | |
360 | MODULE_DEVICE_TABLE(pcmcia, parport_ids); | |
361 | ||
1da177e4 LT |
362 | static struct pcmcia_driver parport_cs_driver = { |
363 | .owner = THIS_MODULE, | |
364 | .drv = { | |
365 | .name = "parport_cs", | |
366 | }, | |
367 | .attach = parport_attach, | |
1e212f36 | 368 | .event = parport_event, |
cc3b4866 | 369 | .remove = parport_detach, |
476835af | 370 | .id_table = parport_ids, |
98e4c28b DB |
371 | .suspend = parport_suspend, |
372 | .resume = parport_resume, | |
1da177e4 LT |
373 | }; |
374 | ||
375 | static int __init init_parport_cs(void) | |
376 | { | |
377 | return pcmcia_register_driver(&parport_cs_driver); | |
378 | } | |
379 | ||
380 | static void __exit exit_parport_cs(void) | |
381 | { | |
382 | pcmcia_unregister_driver(&parport_cs_driver); | |
1da177e4 LT |
383 | } |
384 | ||
385 | module_init(init_parport_cs); | |
386 | module_exit(exit_parport_cs); |