Commit | Line | Data |
---|---|---|
d1d3cb32 DVC |
1 | /* |
2 | comedi/drivers/ni_daq_dio24.c | |
3 | Driver for National Instruments PCMCIA DAQ-Card DIO-24 | |
4 | Copyright (C) 2002 Daniel Vecino Castel <dvecino@able.es> | |
5 | ||
6 | PCMCIA crap at end of file is adapted from dummy_cs.c 1.31 2001/08/24 12:13:13 | |
7 | from the pcmcia package. | |
8 | The initial developer of the pcmcia dummy_cs.c 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 | This program is free software; you can redistribute it and/or modify | |
13 | it under the terms of the GNU General Public License as published by | |
14 | the Free Software Foundation; either version 2 of the License, or | |
15 | (at your option) any later version. | |
16 | ||
17 | This program is distributed in the hope that it will be useful, | |
18 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | GNU General Public License for more details. | |
21 | ||
22 | You should have received a copy of the GNU General Public License | |
23 | along with this program; if not, write to the Free Software | |
24 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
25 | ||
26 | ************************************************************************ | |
27 | */ | |
28 | /* | |
29 | Driver: ni_daq_dio24 | |
30 | Description: National Instruments PCMCIA DAQ-Card DIO-24 | |
31 | Author: Daniel Vecino Castel <dvecino@able.es> | |
32 | Devices: [National Instruments] PCMCIA DAQ-Card DIO-24 (ni_daq_dio24) | |
33 | Status: ? | |
34 | Updated: Thu, 07 Nov 2002 21:53:06 -0800 | |
35 | ||
36 | This is just a wrapper around the 8255.o driver to properly handle | |
37 | the PCMCIA interface. | |
38 | */ | |
39 | ||
0a85b6f0 | 40 | /* #define LABPC_DEBUG *//* enable debugging messages */ |
d1d3cb32 DVC |
41 | #undef LABPC_DEBUG |
42 | ||
25436dc9 | 43 | #include <linux/interrupt.h> |
5a0e3ad6 | 44 | #include <linux/slab.h> |
d1d3cb32 DVC |
45 | #include "../comedidev.h" |
46 | ||
47 | #include <linux/ioport.h> | |
d1d3cb32 DVC |
48 | |
49 | #include "8255.h" | |
50 | ||
d1d3cb32 DVC |
51 | #include <pcmcia/cs.h> |
52 | #include <pcmcia/cistpl.h> | |
53 | #include <pcmcia/cisreg.h> | |
54 | #include <pcmcia/ds.h> | |
55 | ||
56 | static struct pcmcia_device *pcmcia_cur_dev = NULL; | |
57 | ||
2696fb57 | 58 | #define DIO24_SIZE 4 /* size of io region used by board */ |
d1d3cb32 | 59 | |
da91b269 BP |
60 | static int dio24_attach(struct comedi_device *dev, struct comedi_devconfig *it); |
61 | static int dio24_detach(struct comedi_device *dev); | |
d1d3cb32 DVC |
62 | |
63 | enum dio24_bustype { pcmcia_bustype }; | |
64 | ||
cf4c8d1b | 65 | struct dio24_board_struct { |
d1d3cb32 | 66 | const char *name; |
2696fb57 BP |
67 | int device_id; /* device id for pcmcia board */ |
68 | enum dio24_bustype bustype; /* PCMCIA */ | |
69 | int have_dio; /* have 8255 chip */ | |
70 | /* function pointers so we can use inb/outb or readb/writeb as appropriate */ | |
d1d3cb32 DVC |
71 | unsigned int (*read_byte) (unsigned int address); |
72 | void (*write_byte) (unsigned int byte, unsigned int address); | |
cf4c8d1b | 73 | }; |
d1d3cb32 | 74 | |
cf4c8d1b | 75 | static const struct dio24_board_struct dio24_boards[] = { |
d1d3cb32 | 76 | { |
0a85b6f0 MT |
77 | .name = "daqcard-dio24", |
78 | .device_id = 0x475c, /* 0x10b is manufacturer id, 0x475c is device id */ | |
79 | .bustype = pcmcia_bustype, | |
80 | .have_dio = 1, | |
81 | }, | |
d1d3cb32 | 82 | { |
0a85b6f0 MT |
83 | .name = "ni_daq_dio24", |
84 | .device_id = 0x475c, /* 0x10b is manufacturer id, 0x475c is device id */ | |
85 | .bustype = pcmcia_bustype, | |
86 | .have_dio = 1, | |
87 | }, | |
d1d3cb32 DVC |
88 | }; |
89 | ||
90 | /* | |
91 | * Useful for shorthand access to the particular board structure | |
92 | */ | |
cf4c8d1b | 93 | #define thisboard ((const struct dio24_board_struct *)dev->board_ptr) |
d1d3cb32 | 94 | |
344d23e9 BP |
95 | struct dio24_private { |
96 | ||
d1d3cb32 | 97 | int data; /* number of data points left to be taken */ |
344d23e9 BP |
98 | }; |
99 | ||
344d23e9 | 100 | #define devpriv ((struct dio24_private *)dev->private) |
d1d3cb32 | 101 | |
139dfbdf | 102 | static struct comedi_driver driver_dio24 = { |
68c3dbff BP |
103 | .driver_name = "ni_daq_dio24", |
104 | .module = THIS_MODULE, | |
105 | .attach = dio24_attach, | |
106 | .detach = dio24_detach, | |
8629efa4 | 107 | .num_names = ARRAY_SIZE(dio24_boards), |
68c3dbff BP |
108 | .board_name = &dio24_boards[0].name, |
109 | .offset = sizeof(struct dio24_board_struct), | |
d1d3cb32 DVC |
110 | }; |
111 | ||
da91b269 | 112 | static int dio24_attach(struct comedi_device *dev, struct comedi_devconfig *it) |
d1d3cb32 | 113 | { |
34c43922 | 114 | struct comedi_subdevice *s; |
d1d3cb32 DVC |
115 | unsigned long iobase = 0; |
116 | #ifdef incomplete | |
117 | unsigned int irq = 0; | |
118 | #endif | |
119 | struct pcmcia_device *link; | |
120 | ||
121 | /* allocate and initialize dev->private */ | |
344d23e9 | 122 | if (alloc_private(dev, sizeof(struct dio24_private)) < 0) |
d1d3cb32 DVC |
123 | return -ENOMEM; |
124 | ||
2696fb57 | 125 | /* get base address, irq etc. based on bustype */ |
d1d3cb32 DVC |
126 | switch (thisboard->bustype) { |
127 | case pcmcia_bustype: | |
128 | link = pcmcia_cur_dev; /* XXX hack */ | |
129 | if (!link) | |
130 | return -EIO; | |
9a017a91 | 131 | iobase = link->resource[0]->start; |
d1d3cb32 | 132 | #ifdef incomplete |
eb14120f | 133 | irq = link->irq; |
d1d3cb32 DVC |
134 | #endif |
135 | break; | |
136 | default: | |
137 | printk("bug! couldn't determine board type\n"); | |
138 | return -EINVAL; | |
139 | break; | |
140 | } | |
141 | printk("comedi%d: ni_daq_dio24: %s, io 0x%lx", dev->minor, | |
0a85b6f0 | 142 | thisboard->name, iobase); |
d1d3cb32 DVC |
143 | #ifdef incomplete |
144 | if (irq) { | |
145 | printk(", irq %u", irq); | |
146 | } | |
147 | #endif | |
148 | ||
149 | printk("\n"); | |
150 | ||
151 | if (iobase == 0) { | |
152 | printk("io base address is zero!\n"); | |
153 | return -EINVAL; | |
154 | } | |
155 | ||
156 | dev->iobase = iobase; | |
157 | ||
158 | #ifdef incomplete | |
159 | /* grab our IRQ */ | |
160 | dev->irq = irq; | |
161 | #endif | |
162 | ||
163 | dev->board_name = thisboard->name; | |
164 | ||
165 | if (alloc_subdevices(dev, 1) < 0) | |
166 | return -ENOMEM; | |
167 | ||
168 | /* 8255 dio */ | |
169 | s = dev->subdevices + 0; | |
170 | subdev_8255_init(dev, s, NULL, dev->iobase); | |
171 | ||
172 | return 0; | |
173 | }; | |
174 | ||
da91b269 | 175 | static int dio24_detach(struct comedi_device *dev) |
d1d3cb32 DVC |
176 | { |
177 | printk("comedi%d: ni_daq_dio24: remove\n", dev->minor); | |
178 | ||
179 | if (dev->subdevices) | |
180 | subdev_8255_cleanup(dev, dev->subdevices + 0); | |
181 | ||
182 | if (thisboard->bustype != pcmcia_bustype && dev->iobase) | |
183 | release_region(dev->iobase, DIO24_SIZE); | |
184 | if (dev->irq) | |
5f74ea14 | 185 | free_irq(dev->irq, dev); |
d1d3cb32 DVC |
186 | |
187 | return 0; | |
188 | }; | |
189 | ||
55a19b39 | 190 | /* PCMCIA crap -- watch your words! */ |
d1d3cb32 DVC |
191 | |
192 | static void dio24_config(struct pcmcia_device *link); | |
193 | static void dio24_release(struct pcmcia_device *link); | |
194 | static int dio24_cs_suspend(struct pcmcia_device *p_dev); | |
195 | static int dio24_cs_resume(struct pcmcia_device *p_dev); | |
196 | ||
197 | /* | |
198 | The attach() and detach() entry points are used to create and destroy | |
199 | "instances" of the driver, where each instance represents everything | |
200 | needed to manage one actual PCMCIA card. | |
201 | */ | |
202 | ||
203 | static int dio24_cs_attach(struct pcmcia_device *); | |
204 | static void dio24_cs_detach(struct pcmcia_device *); | |
205 | ||
206 | /* | |
207 | You'll also need to prototype all the functions that will actually | |
208 | be used to talk to your device. See 'memory_cs' for a good example | |
209 | of a fully self-sufficient driver; the other drivers rely more or | |
210 | less on other parts of the kernel. | |
211 | */ | |
212 | ||
213 | /* | |
214 | The dev_info variable is the "key" that is used to match up this | |
215 | device driver with appropriate cards, through the card configuration | |
216 | database. | |
217 | */ | |
218 | ||
219 | static const dev_info_t dev_info = "ni_daq_dio24"; | |
220 | ||
2ec9f875 | 221 | struct local_info_t { |
d1d3cb32 | 222 | struct pcmcia_device *link; |
d1d3cb32 DVC |
223 | int stop; |
224 | struct bus_operations *bus; | |
2ec9f875 | 225 | }; |
d1d3cb32 DVC |
226 | |
227 | /*====================================================================== | |
228 | ||
229 | dio24_cs_attach() creates an "instance" of the driver, allocating | |
230 | local data structures for one device. The device is registered | |
231 | with Card Services. | |
232 | ||
233 | The dev_link structure is initialized, but we don't actually | |
234 | configure the card at this point -- we wait until we receive a | |
235 | card insertion event. | |
236 | ||
237 | ======================================================================*/ | |
238 | ||
239 | static int dio24_cs_attach(struct pcmcia_device *link) | |
240 | { | |
2ec9f875 | 241 | struct local_info_t *local; |
d1d3cb32 DVC |
242 | |
243 | printk(KERN_INFO "ni_daq_dio24: HOLA SOY YO - CS-attach!\n"); | |
244 | ||
55a19b39 | 245 | dev_dbg(&link->dev, "dio24_cs_attach()\n"); |
d1d3cb32 DVC |
246 | |
247 | /* Allocate space for private device-specific data */ | |
2ec9f875 | 248 | local = kzalloc(sizeof(struct local_info_t), GFP_KERNEL); |
d1d3cb32 DVC |
249 | if (!local) |
250 | return -ENOMEM; | |
251 | local->link = link; | |
252 | link->priv = local; | |
253 | ||
d1d3cb32 DVC |
254 | /* |
255 | General socket configuration defaults can go here. In this | |
256 | client, we assume very little, and rely on the CIS for almost | |
257 | everything. In most clients, many details (i.e., number, sizes, | |
258 | and attributes of IO windows) are fixed by the nature of the | |
259 | device, and can be hard-wired here. | |
260 | */ | |
261 | link->conf.Attributes = 0; | |
262 | link->conf.IntType = INT_MEMORY_AND_IO; | |
263 | ||
264 | pcmcia_cur_dev = link; | |
265 | ||
266 | dio24_config(link); | |
267 | ||
268 | return 0; | |
269 | } /* dio24_cs_attach */ | |
270 | ||
271 | /*====================================================================== | |
272 | ||
273 | This deletes a driver "instance". The device is de-registered | |
274 | with Card Services. If it has been released, all local data | |
275 | structures are freed. Otherwise, the structures will be freed | |
276 | when the device is released. | |
277 | ||
278 | ======================================================================*/ | |
279 | ||
280 | static void dio24_cs_detach(struct pcmcia_device *link) | |
281 | { | |
282 | ||
283 | printk(KERN_INFO "ni_daq_dio24: HOLA SOY YO - cs-detach!\n"); | |
284 | ||
55a19b39 | 285 | dev_dbg(&link->dev, "dio24_cs_detach\n"); |
d1d3cb32 | 286 | |
78950591 JMC |
287 | ((struct local_info_t *)link->priv)->stop = 1; |
288 | dio24_release(link); | |
d1d3cb32 DVC |
289 | |
290 | /* This points to the parent local_info_t struct */ | |
291 | if (link->priv) | |
292 | kfree(link->priv); | |
293 | ||
294 | } /* dio24_cs_detach */ | |
295 | ||
296 | /*====================================================================== | |
297 | ||
298 | dio24_config() is scheduled to run after a CARD_INSERTION event | |
299 | is received, to configure the PCMCIA socket, and to make the | |
300 | device available to the system. | |
301 | ||
302 | ======================================================================*/ | |
303 | ||
55a19b39 DB |
304 | static int dio24_pcmcia_config_loop(struct pcmcia_device *p_dev, |
305 | cistpl_cftable_entry_t *cfg, | |
306 | cistpl_cftable_entry_t *dflt, | |
307 | unsigned int vcc, | |
308 | void *priv_data) | |
d1d3cb32 | 309 | { |
55a19b39 | 310 | win_req_t *req = priv_data; |
d1d3cb32 | 311 | memreq_t map; |
d1d3cb32 | 312 | |
55a19b39 DB |
313 | if (cfg->index == 0) |
314 | return -ENODEV; | |
c3744138 | 315 | |
55a19b39 DB |
316 | /* Does this card need audio output? */ |
317 | if (cfg->flags & CISTPL_CFTABLE_AUDIO) { | |
318 | p_dev->conf.Attributes |= CONF_ENABLE_SPKR; | |
319 | p_dev->conf.Status = CCSR_AUDIO_ENA; | |
d1d3cb32 | 320 | } |
c3744138 | 321 | |
55a19b39 | 322 | /* Do we need to allocate an interrupt? */ |
eb14120f | 323 | p_dev->conf.Attributes |= CONF_ENABLE_IRQ; |
55a19b39 DB |
324 | |
325 | /* IO window settings */ | |
90abdc3b | 326 | p_dev->resource[0]->end = p_dev->resource[1]->end = 0; |
55a19b39 DB |
327 | if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) { |
328 | cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io; | |
90abdc3b DB |
329 | p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK; |
330 | p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; | |
331 | p_dev->resource[0]->flags |= | |
332 | pcmcia_io_cfg_data_width(io->flags); | |
333 | p_dev->resource[0]->start = io->win[0].base; | |
334 | p_dev->resource[0]->end = io->win[0].len; | |
55a19b39 | 335 | if (io->nwin > 1) { |
90abdc3b DB |
336 | p_dev->resource[1]->flags = p_dev->resource[0]->flags; |
337 | p_dev->resource[1]->start = io->win[1].base; | |
338 | p_dev->resource[1]->end = io->win[1].len; | |
55a19b39 DB |
339 | } |
340 | /* This reserves IO space but doesn't actually enable it */ | |
90abdc3b | 341 | if (pcmcia_request_io(p_dev) != 0) |
55a19b39 | 342 | return -ENODEV; |
d1d3cb32 | 343 | } |
c3744138 | 344 | |
55a19b39 DB |
345 | if ((cfg->mem.nwin > 0) || (dflt->mem.nwin > 0)) { |
346 | cistpl_mem_t *mem = | |
347 | (cfg->mem.nwin) ? &cfg->mem : &dflt->mem; | |
348 | req->Attributes = WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_CM; | |
349 | req->Attributes |= WIN_ENABLE; | |
350 | req->Base = mem->win[0].host_addr; | |
351 | req->Size = mem->win[0].len; | |
352 | if (req->Size < 0x1000) | |
353 | req->Size = 0x1000; | |
354 | req->AccessSpeed = 0; | |
6838b03f | 355 | if (pcmcia_request_window(p_dev, req, &p_dev->win)) |
55a19b39 DB |
356 | return -ENODEV; |
357 | map.Page = 0; | |
358 | map.CardOffset = mem->win[0].card_addr; | |
868575d1 | 359 | if (pcmcia_map_mem_page(p_dev, p_dev->win, &map)) |
55a19b39 | 360 | return -ENODEV; |
d1d3cb32 | 361 | } |
55a19b39 DB |
362 | /* If we got this far, we're cool! */ |
363 | return 0; | |
364 | } | |
d1d3cb32 | 365 | |
55a19b39 DB |
366 | static void dio24_config(struct pcmcia_device *link) |
367 | { | |
55a19b39 DB |
368 | int ret; |
369 | win_req_t req; | |
d1d3cb32 | 370 | |
55a19b39 | 371 | printk(KERN_INFO "ni_daq_dio24: HOLA SOY YO! - config\n"); |
d1d3cb32 | 372 | |
55a19b39 | 373 | dev_dbg(&link->dev, "dio24_config\n"); |
c3744138 | 374 | |
55a19b39 DB |
375 | ret = pcmcia_loop_config(link, dio24_pcmcia_config_loop, &req); |
376 | if (ret) { | |
377 | dev_warn(&link->dev, "no configuration found\n"); | |
378 | goto failed; | |
d1d3cb32 DVC |
379 | } |
380 | ||
eb14120f DB |
381 | if (!link->irq) |
382 | goto failed; | |
d1d3cb32 DVC |
383 | |
384 | /* | |
385 | This actually configures the PCMCIA socket -- setting up | |
386 | the I/O windows and the interrupt mapping, and putting the | |
387 | card and host interface into "Memory and IO" mode. | |
388 | */ | |
55a19b39 DB |
389 | ret = pcmcia_request_configuration(link, &link->conf); |
390 | if (ret) | |
391 | goto failed; | |
d1d3cb32 | 392 | |
d1d3cb32 | 393 | /* Finally, report what we've done */ |
78950591 | 394 | dev_info(&link->dev, "index 0x%02x", link->conf.ConfigIndex); |
d1d3cb32 | 395 | if (link->conf.Attributes & CONF_ENABLE_IRQ) |
eb14120f | 396 | printk(", irq %d", link->irq); |
9a017a91 DB |
397 | if (link->resource[0]) |
398 | printk(" & %pR", link->resource[0]); | |
399 | if (link->resource[1]) | |
400 | printk(" & %pR", link->resource[1]); | |
d1d3cb32 DVC |
401 | if (link->win) |
402 | printk(", mem 0x%06lx-0x%06lx", req.Base, | |
0a85b6f0 | 403 | req.Base + req.Size - 1); |
d1d3cb32 DVC |
404 | printk("\n"); |
405 | ||
406 | return; | |
407 | ||
55a19b39 | 408 | failed: |
d1d3cb32 DVC |
409 | printk(KERN_INFO "Fallo"); |
410 | dio24_release(link); | |
411 | ||
412 | } /* dio24_config */ | |
413 | ||
414 | static void dio24_release(struct pcmcia_device *link) | |
415 | { | |
55a19b39 | 416 | dev_dbg(&link->dev, "dio24_release\n"); |
d1d3cb32 DVC |
417 | |
418 | pcmcia_disable_device(link); | |
419 | } /* dio24_release */ | |
420 | ||
421 | /*====================================================================== | |
422 | ||
423 | The card status event handler. Mostly, this schedules other | |
424 | stuff to run after an event is received. | |
425 | ||
426 | When a CARD_REMOVAL event is received, we immediately set a | |
427 | private flag to block future accesses to this device. All the | |
428 | functions that actually access the device should check this flag | |
429 | to make sure the card is still present. | |
430 | ||
431 | ======================================================================*/ | |
432 | ||
433 | static int dio24_cs_suspend(struct pcmcia_device *link) | |
434 | { | |
2ec9f875 | 435 | struct local_info_t *local = link->priv; |
d1d3cb32 DVC |
436 | |
437 | /* Mark the device as stopped, to block IO until later */ | |
438 | local->stop = 1; | |
439 | return 0; | |
440 | } /* dio24_cs_suspend */ | |
441 | ||
442 | static int dio24_cs_resume(struct pcmcia_device *link) | |
443 | { | |
2ec9f875 | 444 | struct local_info_t *local = link->priv; |
d1d3cb32 DVC |
445 | |
446 | local->stop = 0; | |
447 | return 0; | |
448 | } /* dio24_cs_resume */ | |
449 | ||
450 | /*====================================================================*/ | |
451 | ||
452 | static struct pcmcia_device_id dio24_cs_ids[] = { | |
453 | /* N.B. These IDs should match those in dio24_boards */ | |
454 | PCMCIA_DEVICE_MANF_CARD(0x010b, 0x475c), /* daqcard-dio24 */ | |
455 | PCMCIA_DEVICE_NULL | |
456 | }; | |
457 | ||
458 | MODULE_DEVICE_TABLE(pcmcia, dio24_cs_ids); | |
6c7f8196 AK |
459 | MODULE_AUTHOR("Daniel Vecino Castel <dvecino@able.es>"); |
460 | MODULE_DESCRIPTION("Comedi driver for National Instruments " | |
461 | "PCMCIA DAQ-Card DIO-24"); | |
462 | MODULE_LICENSE("GPL"); | |
d1d3cb32 DVC |
463 | |
464 | struct pcmcia_driver dio24_cs_driver = { | |
465 | .probe = dio24_cs_attach, | |
466 | .remove = dio24_cs_detach, | |
467 | .suspend = dio24_cs_suspend, | |
468 | .resume = dio24_cs_resume, | |
469 | .id_table = dio24_cs_ids, | |
470 | .owner = THIS_MODULE, | |
471 | .drv = { | |
0a85b6f0 | 472 | .name = dev_info, |
d1d3cb32 DVC |
473 | }, |
474 | }; | |
475 | ||
476 | static int __init init_dio24_cs(void) | |
477 | { | |
478 | printk("ni_daq_dio24: HOLA SOY YO!\n"); | |
d1d3cb32 DVC |
479 | pcmcia_register_driver(&dio24_cs_driver); |
480 | return 0; | |
481 | } | |
482 | ||
483 | static void __exit exit_dio24_cs(void) | |
484 | { | |
d1d3cb32 DVC |
485 | pcmcia_unregister_driver(&dio24_cs_driver); |
486 | } | |
487 | ||
488 | int __init init_module(void) | |
489 | { | |
490 | int ret; | |
491 | ||
492 | ret = init_dio24_cs(); | |
493 | if (ret < 0) | |
494 | return ret; | |
495 | ||
496 | return comedi_driver_register(&driver_dio24); | |
497 | } | |
498 | ||
499 | void __exit cleanup_module(void) | |
500 | { | |
501 | exit_dio24_cs(); | |
502 | comedi_driver_unregister(&driver_dio24); | |
503 | } |