Fred Brooks | 1f9bbbe | 2009-02-19 10:05:01 -0800 | [diff] [blame] | 1 | /* |
| 2 | * comedi/drivers/ni_daq_700.c |
| 3 | * Driver for DAQCard-700 DIO only |
| 4 | * copied from 8255 |
| 5 | * |
| 6 | * COMEDI - Linux Control and Measurement Device Interface |
| 7 | * Copyright (C) 1998 David A. Schleef <ds@schleef.org> |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 22 | * |
| 23 | */ |
| 24 | |
| 25 | /* |
| 26 | Driver: ni_daq_700 |
| 27 | Description: National Instruments PCMCIA DAQCard-700 DIO only |
| 28 | Author: Fred Brooks <nsaspook@nsaspook.com>, |
| 29 | based on ni_daq_dio24 by Daniel Vecino Castel <dvecino@able.es> |
| 30 | Devices: [National Instruments] PCMCIA DAQ-Card-700 (ni_daq_700) |
| 31 | Status: works |
| 32 | Updated: Thu, 21 Feb 2008 12:07:20 +0000 |
| 33 | |
| 34 | The daqcard-700 appears in Comedi as a single digital I/O subdevice with |
| 35 | 16 channels. The channel 0 corresponds to the daqcard-700's output |
| 36 | port, bit 0; channel 8 corresponds to the input port, bit 0. |
| 37 | |
| 38 | Direction configuration: channels 0-7 output, 8-15 input (8225 device |
| 39 | emu as port A output, port B input, port C N/A). |
| 40 | |
| 41 | IRQ is assigned but not used. |
| 42 | */ |
| 43 | |
| 44 | #include "../comedidev.h" |
| 45 | |
| 46 | #include <linux/ioport.h> |
Fred Brooks | 1f9bbbe | 2009-02-19 10:05:01 -0800 | [diff] [blame] | 47 | |
| 48 | #include <pcmcia/cs_types.h> |
| 49 | #include <pcmcia/cs.h> |
| 50 | #include <pcmcia/cistpl.h> |
| 51 | #include <pcmcia/cisreg.h> |
| 52 | #include <pcmcia/ds.h> |
| 53 | |
| 54 | static struct pcmcia_device *pcmcia_cur_dev = NULL; |
| 55 | |
| 56 | #define DIO700_SIZE 8 // size of io region used by board |
| 57 | |
| 58 | static int dio700_attach(comedi_device * dev, comedi_devconfig * it); |
| 59 | static int dio700_detach(comedi_device * dev); |
| 60 | |
| 61 | enum dio700_bustype { pcmcia_bustype }; |
| 62 | |
| 63 | typedef struct dio700_board_struct { |
| 64 | const char *name; |
| 65 | int device_id; // device id for pcmcia board |
| 66 | enum dio700_bustype bustype; // PCMCIA |
| 67 | int have_dio; // have daqcard-700 dio |
| 68 | // function pointers so we can use inb/outb or readb/writeb |
| 69 | // as appropriate |
| 70 | unsigned int (*read_byte) (unsigned int address); |
| 71 | void (*write_byte) (unsigned int byte, unsigned int address); |
| 72 | } dio700_board; |
| 73 | |
| 74 | static const dio700_board dio700_boards[] = { |
| 75 | { |
| 76 | name: "daqcard-700", |
| 77 | device_id:0x4743,// 0x10b is manufacturer id, 0x4743 is device id |
| 78 | bustype: pcmcia_bustype, |
| 79 | have_dio:1, |
| 80 | }, |
| 81 | { |
| 82 | name: "ni_daq_700", |
| 83 | device_id:0x4743,// 0x10b is manufacturer id, 0x4743 is device id |
| 84 | bustype: pcmcia_bustype, |
| 85 | have_dio:1, |
| 86 | }, |
| 87 | }; |
| 88 | |
| 89 | /* |
| 90 | * Useful for shorthand access to the particular board structure |
| 91 | */ |
| 92 | #define thisboard ((const dio700_board *)dev->board_ptr) |
| 93 | |
| 94 | typedef struct { |
| 95 | int data; /* number of data points left to be taken */ |
| 96 | } dio700_private; |
| 97 | |
| 98 | #define devpriv ((dio700_private *)dev->private) |
| 99 | |
| 100 | static comedi_driver driver_dio700 = { |
| 101 | driver_name:"ni_daq_700", |
| 102 | module:THIS_MODULE, |
| 103 | attach:dio700_attach, |
| 104 | detach:dio700_detach, |
| 105 | num_names:sizeof(dio700_boards) / sizeof(dio700_board), |
| 106 | board_name:&dio700_boards[0].name, |
| 107 | offset:sizeof(dio700_board), |
| 108 | }; |
| 109 | |
| 110 | /* the real driver routines */ |
| 111 | |
| 112 | #define _700_SIZE 8 |
| 113 | |
| 114 | #define _700_DATA 0 |
| 115 | |
| 116 | #define DIO_W 0x04 |
| 117 | #define DIO_R 0x05 |
| 118 | |
| 119 | struct subdev_700_struct { |
| 120 | unsigned long cb_arg; |
| 121 | int (*cb_func) (int, int, int, unsigned long); |
| 122 | int have_irq; |
| 123 | }; |
| 124 | |
| 125 | #define CALLBACK_ARG (((struct subdev_700_struct *)s->private)->cb_arg) |
| 126 | #define CALLBACK_FUNC (((struct subdev_700_struct *)s->private)->cb_func) |
| 127 | #define subdevpriv ((struct subdev_700_struct *)s->private) |
| 128 | |
| 129 | static void do_config(comedi_device * dev, comedi_subdevice * s); |
| 130 | |
| 131 | void subdev_700_interrupt(comedi_device * dev, comedi_subdevice * s) |
| 132 | { |
Bill Pemberton | 790c554 | 2009-03-16 22:05:02 -0400 | [diff] [blame^] | 133 | short d; |
Fred Brooks | 1f9bbbe | 2009-02-19 10:05:01 -0800 | [diff] [blame] | 134 | |
| 135 | d = CALLBACK_FUNC(0, _700_DATA, 0, CALLBACK_ARG); |
| 136 | |
| 137 | comedi_buf_put(s->async, d); |
| 138 | s->async->events |= COMEDI_CB_EOS; |
| 139 | |
| 140 | comedi_event(dev, s); |
| 141 | } |
| 142 | |
| 143 | static int subdev_700_cb(int dir, int port, int data, unsigned long arg) |
| 144 | { |
| 145 | /* port is always A for output and B for input (8255 emu) */ |
| 146 | unsigned long iobase = arg; |
| 147 | |
| 148 | if (dir) { |
| 149 | outb(data, iobase + DIO_W); |
| 150 | return 0; |
| 151 | } else { |
| 152 | return inb(iobase + DIO_R); |
| 153 | } |
| 154 | } |
| 155 | |
| 156 | static int subdev_700_insn(comedi_device * dev, comedi_subdevice * s, |
Bill Pemberton | 790c554 | 2009-03-16 22:05:02 -0400 | [diff] [blame^] | 157 | comedi_insn * insn, unsigned int * data) |
Fred Brooks | 1f9bbbe | 2009-02-19 10:05:01 -0800 | [diff] [blame] | 158 | { |
| 159 | if (data[0]) { |
| 160 | s->state &= ~data[0]; |
| 161 | s->state |= (data[0] & data[1]); |
| 162 | |
| 163 | if (data[0] & 0xff) |
| 164 | CALLBACK_FUNC(1, _700_DATA, s->state & 0xff, |
| 165 | CALLBACK_ARG); |
| 166 | } |
| 167 | |
| 168 | data[1] = s->state & 0xff; |
| 169 | data[1] |= CALLBACK_FUNC(0, _700_DATA, 0, CALLBACK_ARG) << 8; |
| 170 | |
| 171 | return 2; |
| 172 | } |
| 173 | |
| 174 | static int subdev_700_insn_config(comedi_device * dev, comedi_subdevice * s, |
Bill Pemberton | 790c554 | 2009-03-16 22:05:02 -0400 | [diff] [blame^] | 175 | comedi_insn * insn, unsigned int * data) |
Fred Brooks | 1f9bbbe | 2009-02-19 10:05:01 -0800 | [diff] [blame] | 176 | { |
| 177 | |
| 178 | switch (data[0]) { |
| 179 | case INSN_CONFIG_DIO_INPUT: |
| 180 | break; |
| 181 | case INSN_CONFIG_DIO_OUTPUT: |
| 182 | break; |
| 183 | case INSN_CONFIG_DIO_QUERY: |
| 184 | data[1] = |
| 185 | (s->io_bits & (1 << CR_CHAN(insn-> |
| 186 | chanspec))) ? COMEDI_OUTPUT : |
| 187 | COMEDI_INPUT; |
| 188 | return insn->n; |
| 189 | break; |
| 190 | default: |
| 191 | return -EINVAL; |
| 192 | } |
| 193 | |
| 194 | return 1; |
| 195 | } |
| 196 | |
| 197 | static void do_config(comedi_device * dev, comedi_subdevice * s) |
| 198 | { /* use powerup defaults */ |
| 199 | return; |
| 200 | } |
| 201 | |
| 202 | static int subdev_700_cmdtest(comedi_device * dev, comedi_subdevice * s, |
| 203 | comedi_cmd * cmd) |
| 204 | { |
| 205 | int err = 0; |
| 206 | unsigned int tmp; |
| 207 | |
| 208 | /* step 1 */ |
| 209 | |
| 210 | tmp = cmd->start_src; |
| 211 | cmd->start_src &= TRIG_NOW; |
| 212 | if (!cmd->start_src || tmp != cmd->start_src) |
| 213 | err++; |
| 214 | |
| 215 | tmp = cmd->scan_begin_src; |
| 216 | cmd->scan_begin_src &= TRIG_EXT; |
| 217 | if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src) |
| 218 | err++; |
| 219 | |
| 220 | tmp = cmd->convert_src; |
| 221 | cmd->convert_src &= TRIG_FOLLOW; |
| 222 | if (!cmd->convert_src || tmp != cmd->convert_src) |
| 223 | err++; |
| 224 | |
| 225 | tmp = cmd->scan_end_src; |
| 226 | cmd->scan_end_src &= TRIG_COUNT; |
| 227 | if (!cmd->scan_end_src || tmp != cmd->scan_end_src) |
| 228 | err++; |
| 229 | |
| 230 | tmp = cmd->stop_src; |
| 231 | cmd->stop_src &= TRIG_NONE; |
| 232 | if (!cmd->stop_src || tmp != cmd->stop_src) |
| 233 | err++; |
| 234 | |
| 235 | if (err) |
| 236 | return 1; |
| 237 | |
| 238 | /* step 2 */ |
| 239 | |
| 240 | if (err) |
| 241 | return 2; |
| 242 | |
| 243 | /* step 3 */ |
| 244 | |
| 245 | if (cmd->start_arg != 0) { |
| 246 | cmd->start_arg = 0; |
| 247 | err++; |
| 248 | } |
| 249 | if (cmd->scan_begin_arg != 0) { |
| 250 | cmd->scan_begin_arg = 0; |
| 251 | err++; |
| 252 | } |
| 253 | if (cmd->convert_arg != 0) { |
| 254 | cmd->convert_arg = 0; |
| 255 | err++; |
| 256 | } |
| 257 | if (cmd->scan_end_arg != 1) { |
| 258 | cmd->scan_end_arg = 1; |
| 259 | err++; |
| 260 | } |
| 261 | if (cmd->stop_arg != 0) { |
| 262 | cmd->stop_arg = 0; |
| 263 | err++; |
| 264 | } |
| 265 | |
| 266 | if (err) |
| 267 | return 3; |
| 268 | |
| 269 | /* step 4 */ |
| 270 | |
| 271 | if (err) |
| 272 | return 4; |
| 273 | |
| 274 | return 0; |
| 275 | } |
| 276 | |
| 277 | static int subdev_700_cmd(comedi_device * dev, comedi_subdevice * s) |
| 278 | { |
| 279 | /* FIXME */ |
| 280 | |
| 281 | return 0; |
| 282 | } |
| 283 | |
| 284 | static int subdev_700_cancel(comedi_device * dev, comedi_subdevice * s) |
| 285 | { |
| 286 | /* FIXME */ |
| 287 | |
| 288 | return 0; |
| 289 | } |
| 290 | |
| 291 | int subdev_700_init(comedi_device * dev, comedi_subdevice * s, int (*cb) (int, |
| 292 | int, int, unsigned long), unsigned long arg) |
| 293 | { |
| 294 | s->type = COMEDI_SUBD_DIO; |
| 295 | s->subdev_flags = SDF_READABLE | SDF_WRITABLE; |
| 296 | s->n_chan = 16; |
| 297 | s->range_table = &range_digital; |
| 298 | s->maxdata = 1; |
| 299 | |
| 300 | s->private = kmalloc(sizeof(struct subdev_700_struct), GFP_KERNEL); |
| 301 | if (!s->private) |
| 302 | return -ENOMEM; |
| 303 | |
| 304 | CALLBACK_ARG = arg; |
| 305 | if (cb == NULL) { |
| 306 | CALLBACK_FUNC = subdev_700_cb; |
| 307 | } else { |
| 308 | CALLBACK_FUNC = cb; |
| 309 | } |
| 310 | s->insn_bits = subdev_700_insn; |
| 311 | s->insn_config = subdev_700_insn_config; |
| 312 | |
| 313 | s->state = 0; |
| 314 | s->io_bits = 0x00ff; |
| 315 | do_config(dev, s); |
| 316 | |
| 317 | return 0; |
| 318 | } |
| 319 | |
| 320 | int subdev_700_init_irq(comedi_device * dev, comedi_subdevice * s, |
| 321 | int (*cb) (int, int, int, unsigned long), unsigned long arg) |
| 322 | { |
| 323 | int ret; |
| 324 | |
| 325 | ret = subdev_700_init(dev, s, cb, arg); |
| 326 | if (ret < 0) |
| 327 | return ret; |
| 328 | |
| 329 | s->do_cmdtest = subdev_700_cmdtest; |
| 330 | s->do_cmd = subdev_700_cmd; |
| 331 | s->cancel = subdev_700_cancel; |
| 332 | |
| 333 | subdevpriv->have_irq = 1; |
| 334 | |
| 335 | return 0; |
| 336 | } |
| 337 | |
| 338 | void subdev_700_cleanup(comedi_device * dev, comedi_subdevice * s) |
| 339 | { |
| 340 | if (s->private) { |
| 341 | if (subdevpriv->have_irq) { |
| 342 | } |
| 343 | |
| 344 | kfree(s->private); |
| 345 | } |
| 346 | } |
| 347 | |
| 348 | EXPORT_SYMBOL(subdev_700_init); |
| 349 | EXPORT_SYMBOL(subdev_700_init_irq); |
| 350 | EXPORT_SYMBOL(subdev_700_cleanup); |
| 351 | EXPORT_SYMBOL(subdev_700_interrupt); |
| 352 | |
| 353 | static int dio700_attach(comedi_device * dev, comedi_devconfig * it) |
| 354 | { |
| 355 | comedi_subdevice *s; |
| 356 | unsigned long iobase = 0; |
| 357 | #ifdef incomplete |
| 358 | unsigned int irq = 0; |
| 359 | #endif |
| 360 | struct pcmcia_device *link; |
| 361 | |
| 362 | /* allocate and initialize dev->private */ |
| 363 | if (alloc_private(dev, sizeof(dio700_private)) < 0) |
| 364 | return -ENOMEM; |
| 365 | |
| 366 | // get base address, irq etc. based on bustype |
| 367 | switch (thisboard->bustype) { |
| 368 | case pcmcia_bustype: |
| 369 | link = pcmcia_cur_dev; /* XXX hack */ |
| 370 | if (!link) |
| 371 | return -EIO; |
| 372 | iobase = link->io.BasePort1; |
| 373 | #ifdef incomplete |
| 374 | irq = link->irq.AssignedIRQ; |
| 375 | #endif |
| 376 | break; |
| 377 | default: |
| 378 | printk("bug! couldn't determine board type\n"); |
| 379 | return -EINVAL; |
| 380 | break; |
| 381 | } |
| 382 | printk("comedi%d: ni_daq_700: %s, io 0x%lx", dev->minor, |
| 383 | thisboard->name, iobase); |
| 384 | #ifdef incomplete |
| 385 | if (irq) { |
| 386 | printk(", irq %u", irq); |
| 387 | } |
| 388 | #endif |
| 389 | |
| 390 | printk("\n"); |
| 391 | |
| 392 | if (iobase == 0) { |
| 393 | printk("io base address is zero!\n"); |
| 394 | return -EINVAL; |
| 395 | } |
| 396 | |
| 397 | dev->iobase = iobase; |
| 398 | |
| 399 | #ifdef incomplete |
| 400 | /* grab our IRQ */ |
| 401 | dev->irq = irq; |
| 402 | #endif |
| 403 | |
| 404 | dev->board_name = thisboard->name; |
| 405 | |
| 406 | if (alloc_subdevices(dev, 1) < 0) |
| 407 | return -ENOMEM; |
| 408 | |
| 409 | /* DAQCard-700 dio */ |
| 410 | s = dev->subdevices + 0; |
| 411 | subdev_700_init(dev, s, NULL, dev->iobase); |
| 412 | |
| 413 | return 0; |
| 414 | }; |
| 415 | |
| 416 | static int dio700_detach(comedi_device * dev) |
| 417 | { |
| 418 | printk("comedi%d: ni_daq_700: cs-remove\n", dev->minor); |
| 419 | |
| 420 | if (dev->subdevices) |
| 421 | subdev_700_cleanup(dev, dev->subdevices + 0); |
| 422 | |
| 423 | if (thisboard->bustype != pcmcia_bustype && dev->iobase) |
| 424 | release_region(dev->iobase, DIO700_SIZE); |
| 425 | if (dev->irq) |
| 426 | comedi_free_irq(dev->irq, dev); |
| 427 | |
| 428 | return 0; |
| 429 | }; |
| 430 | |
| 431 | // PCMCIA crap |
| 432 | |
| 433 | /* |
| 434 | All the PCMCIA modules use PCMCIA_DEBUG to control debugging. If |
| 435 | you do not define PCMCIA_DEBUG at all, all the debug code will be |
| 436 | left out. If you compile with PCMCIA_DEBUG=0, the debug code will |
| 437 | be present but disabled -- but it can then be enabled for specific |
| 438 | modules at load time with a 'pc_debug=#' option to insmod. |
| 439 | */ |
| 440 | #ifdef PCMCIA_DEBUG |
| 441 | static int pc_debug = PCMCIA_DEBUG; |
| 442 | module_param(pc_debug, int, 0644); |
| 443 | #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args) |
| 444 | static char *version = "ni_daq_700.c, based on dummy_cs.c"; |
| 445 | #else |
| 446 | #define DEBUG(n, args...) |
| 447 | #endif |
| 448 | |
| 449 | /*====================================================================*/ |
| 450 | |
| 451 | static void dio700_config(struct pcmcia_device *link); |
| 452 | static void dio700_release(struct pcmcia_device *link); |
| 453 | static int dio700_cs_suspend(struct pcmcia_device *p_dev); |
| 454 | static int dio700_cs_resume(struct pcmcia_device *p_dev); |
| 455 | |
| 456 | /* |
| 457 | The attach() and detach() entry points are used to create and destroy |
| 458 | "instances" of the driver, where each instance represents everything |
| 459 | needed to manage one actual PCMCIA card. |
| 460 | */ |
| 461 | |
| 462 | static int dio700_cs_attach(struct pcmcia_device *); |
| 463 | static void dio700_cs_detach(struct pcmcia_device *); |
| 464 | |
| 465 | /* |
| 466 | You'll also need to prototype all the functions that will actually |
| 467 | be used to talk to your device. See 'memory_cs' for a good example |
| 468 | of a fully self-sufficient driver; the other drivers rely more or |
| 469 | less on other parts of the kernel. |
| 470 | */ |
| 471 | |
| 472 | /* |
| 473 | The dev_info variable is the "key" that is used to match up this |
| 474 | device driver with appropriate cards, through the card configuration |
| 475 | database. |
| 476 | */ |
| 477 | |
| 478 | static const dev_info_t dev_info = "ni_daq_700"; |
| 479 | |
| 480 | typedef struct local_info_t { |
| 481 | struct pcmcia_device *link; |
| 482 | dev_node_t node; |
| 483 | int stop; |
| 484 | struct bus_operations *bus; |
| 485 | } local_info_t; |
| 486 | |
| 487 | /*====================================================================== |
| 488 | |
| 489 | dio700_cs_attach() creates an "instance" of the driver, allocating |
| 490 | local data structures for one device. The device is registered |
| 491 | with Card Services. |
| 492 | |
| 493 | The dev_link structure is initialized, but we don't actually |
| 494 | configure the card at this point -- we wait until we receive a |
| 495 | card insertion event. |
| 496 | |
| 497 | ======================================================================*/ |
| 498 | |
| 499 | static int dio700_cs_attach(struct pcmcia_device *link) |
| 500 | { |
| 501 | local_info_t *local; |
| 502 | |
| 503 | printk(KERN_INFO "ni_daq_700: cs-attach\n"); |
| 504 | |
| 505 | DEBUG(0, "dio700_cs_attach()\n"); |
| 506 | |
| 507 | /* Allocate space for private device-specific data */ |
| 508 | local = kzalloc(sizeof(local_info_t), GFP_KERNEL); |
| 509 | if (!local) |
| 510 | return -ENOMEM; |
| 511 | local->link = link; |
| 512 | link->priv = local; |
| 513 | |
| 514 | /* Interrupt setup */ |
| 515 | link->irq.Attributes = IRQ_TYPE_EXCLUSIVE; |
| 516 | link->irq.IRQInfo1 = IRQ_LEVEL_ID; |
| 517 | link->irq.Handler = NULL; |
| 518 | |
| 519 | /* |
| 520 | General socket configuration defaults can go here. In this |
| 521 | client, we assume very little, and rely on the CIS for almost |
| 522 | everything. In most clients, many details (i.e., number, sizes, |
| 523 | and attributes of IO windows) are fixed by the nature of the |
| 524 | device, and can be hard-wired here. |
| 525 | */ |
| 526 | link->conf.Attributes = 0; |
| 527 | link->conf.IntType = INT_MEMORY_AND_IO; |
| 528 | |
| 529 | pcmcia_cur_dev = link; |
| 530 | |
| 531 | dio700_config(link); |
| 532 | |
| 533 | return 0; |
| 534 | } /* dio700_cs_attach */ |
| 535 | |
| 536 | /*====================================================================== |
| 537 | |
| 538 | This deletes a driver "instance". The device is de-registered |
| 539 | with Card Services. If it has been released, all local data |
| 540 | structures are freed. Otherwise, the structures will be freed |
| 541 | when the device is released. |
| 542 | |
| 543 | ======================================================================*/ |
| 544 | |
| 545 | static void dio700_cs_detach(struct pcmcia_device *link) |
| 546 | { |
| 547 | |
| 548 | printk(KERN_INFO "ni_daq_700: cs-detach!\n"); |
| 549 | |
| 550 | DEBUG(0, "dio700_cs_detach(0x%p)\n", link); |
| 551 | |
| 552 | if (link->dev_node) { |
| 553 | ((local_info_t *) link->priv)->stop = 1; |
| 554 | dio700_release(link); |
| 555 | } |
| 556 | |
| 557 | /* This points to the parent local_info_t struct */ |
| 558 | if (link->priv) |
| 559 | kfree(link->priv); |
| 560 | |
| 561 | } /* dio700_cs_detach */ |
| 562 | |
| 563 | /*====================================================================== |
| 564 | |
| 565 | dio700_config() is scheduled to run after a CARD_INSERTION event |
| 566 | is received, to configure the PCMCIA socket, and to make the |
| 567 | device available to the system. |
| 568 | |
| 569 | ======================================================================*/ |
| 570 | |
| 571 | static void dio700_config(struct pcmcia_device *link) |
| 572 | { |
| 573 | local_info_t *dev = link->priv; |
| 574 | tuple_t tuple; |
| 575 | cisparse_t parse; |
| 576 | int last_ret; |
| 577 | u_char buf[64]; |
| 578 | win_req_t req; |
| 579 | memreq_t map; |
| 580 | cistpl_cftable_entry_t dflt = { 0 }; |
| 581 | |
| 582 | printk(KERN_INFO "ni_daq_700: cs-config\n"); |
| 583 | |
| 584 | DEBUG(0, "dio700_config(0x%p)\n", link); |
| 585 | |
| 586 | /* |
| 587 | This reads the card's CONFIG tuple to find its configuration |
| 588 | registers. |
| 589 | */ |
| 590 | tuple.DesiredTuple = CISTPL_CONFIG; |
| 591 | tuple.Attributes = 0; |
| 592 | tuple.TupleData = buf; |
| 593 | tuple.TupleDataMax = sizeof(buf); |
| 594 | tuple.TupleOffset = 0; |
| 595 | if ((last_ret = pcmcia_get_first_tuple(link, &tuple)) != 0) { |
| 596 | cs_error(link, GetFirstTuple, last_ret); |
| 597 | goto cs_failed; |
| 598 | } |
| 599 | if ((last_ret = pcmcia_get_tuple_data(link, &tuple)) != 0) { |
| 600 | cs_error(link, GetTupleData, last_ret); |
| 601 | goto cs_failed; |
| 602 | } |
| 603 | if ((last_ret = pcmcia_parse_tuple(&tuple, &parse)) != 0) { |
| 604 | cs_error(link, ParseTuple, last_ret); |
| 605 | goto cs_failed; |
| 606 | } |
| 607 | link->conf.ConfigBase = parse.config.base; |
| 608 | link->conf.Present = parse.config.rmask[0]; |
| 609 | |
| 610 | /* |
| 611 | In this loop, we scan the CIS for configuration table entries, |
| 612 | each of which describes a valid card configuration, including |
| 613 | voltage, IO window, memory window, and interrupt settings. |
| 614 | |
| 615 | We make no assumptions about the card to be configured: we use |
| 616 | just the information available in the CIS. In an ideal world, |
| 617 | this would work for any PCMCIA card, but it requires a complete |
| 618 | and accurate CIS. In practice, a driver usually "knows" most of |
| 619 | these things without consulting the CIS, and most client drivers |
| 620 | will only use the CIS to fill in implementation-defined details. |
| 621 | */ |
| 622 | tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; |
| 623 | if ((last_ret = pcmcia_get_first_tuple(link, &tuple)) != 0) { |
| 624 | cs_error(link, GetFirstTuple, last_ret); |
| 625 | goto cs_failed; |
| 626 | } |
| 627 | while (1) { |
| 628 | cistpl_cftable_entry_t *cfg = &(parse.cftable_entry); |
| 629 | if (pcmcia_get_tuple_data(link, &tuple) != 0) |
| 630 | goto next_entry; |
| 631 | if (pcmcia_parse_tuple(&tuple, &parse) != 0) |
| 632 | goto next_entry; |
| 633 | |
| 634 | if (cfg->flags & CISTPL_CFTABLE_DEFAULT) |
| 635 | dflt = *cfg; |
| 636 | if (cfg->index == 0) |
| 637 | goto next_entry; |
| 638 | link->conf.ConfigIndex = cfg->index; |
| 639 | |
| 640 | /* Does this card need audio output? */ |
| 641 | if (cfg->flags & CISTPL_CFTABLE_AUDIO) { |
| 642 | link->conf.Attributes |= CONF_ENABLE_SPKR; |
| 643 | link->conf.Status = CCSR_AUDIO_ENA; |
| 644 | } |
| 645 | |
| 646 | /* Do we need to allocate an interrupt? */ |
| 647 | if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1) |
| 648 | link->conf.Attributes |= CONF_ENABLE_IRQ; |
| 649 | |
| 650 | /* IO window settings */ |
| 651 | link->io.NumPorts1 = link->io.NumPorts2 = 0; |
| 652 | if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) { |
| 653 | cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io; |
| 654 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO; |
| 655 | if (!(io->flags & CISTPL_IO_8BIT)) |
| 656 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_16; |
| 657 | if (!(io->flags & CISTPL_IO_16BIT)) |
| 658 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; |
| 659 | link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK; |
| 660 | link->io.BasePort1 = io->win[0].base; |
| 661 | link->io.NumPorts1 = io->win[0].len; |
| 662 | if (io->nwin > 1) { |
| 663 | link->io.Attributes2 = link->io.Attributes1; |
| 664 | link->io.BasePort2 = io->win[1].base; |
| 665 | link->io.NumPorts2 = io->win[1].len; |
| 666 | } |
| 667 | /* This reserves IO space but doesn't actually enable it */ |
| 668 | if (pcmcia_request_io(link, &link->io) != 0) |
| 669 | goto next_entry; |
| 670 | } |
| 671 | |
| 672 | if ((cfg->mem.nwin > 0) || (dflt.mem.nwin > 0)) { |
| 673 | cistpl_mem_t *mem = |
| 674 | (cfg->mem.nwin) ? &cfg->mem : &dflt.mem; |
| 675 | req.Attributes = WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_CM; |
| 676 | req.Attributes |= WIN_ENABLE; |
| 677 | req.Base = mem->win[0].host_addr; |
| 678 | req.Size = mem->win[0].len; |
| 679 | if (req.Size < 0x1000) |
| 680 | req.Size = 0x1000; |
| 681 | req.AccessSpeed = 0; |
| 682 | if (pcmcia_request_window(&link, &req, &link->win)) |
| 683 | goto next_entry; |
| 684 | map.Page = 0; |
| 685 | map.CardOffset = mem->win[0].card_addr; |
| 686 | if (pcmcia_map_mem_page(link->win, &map)) |
| 687 | goto next_entry; |
| 688 | } |
| 689 | /* If we got this far, we're cool! */ |
| 690 | break; |
| 691 | |
| 692 | next_entry: |
| 693 | if ((last_ret = pcmcia_get_next_tuple(link, &tuple)) != 0) { |
| 694 | cs_error(link, GetNextTuple, last_ret); |
| 695 | goto cs_failed; |
| 696 | } |
| 697 | } |
| 698 | |
| 699 | /* |
| 700 | Allocate an interrupt line. Note that this does not assign a |
| 701 | handler to the interrupt, unless the 'Handler' member of the |
| 702 | irq structure is initialized. |
| 703 | */ |
| 704 | if (link->conf.Attributes & CONF_ENABLE_IRQ) |
| 705 | if ((last_ret = pcmcia_request_irq(link, &link->irq)) != 0) { |
| 706 | cs_error(link, RequestIRQ, last_ret); |
| 707 | goto cs_failed; |
| 708 | } |
| 709 | |
| 710 | /* |
| 711 | This actually configures the PCMCIA socket -- setting up |
| 712 | the I/O windows and the interrupt mapping, and putting the |
| 713 | card and host interface into "Memory and IO" mode. |
| 714 | */ |
| 715 | if ((last_ret = pcmcia_request_configuration(link, &link->conf)) != 0) { |
| 716 | cs_error(link, RequestConfiguration, last_ret); |
| 717 | goto cs_failed; |
| 718 | } |
| 719 | |
| 720 | /* |
| 721 | At this point, the dev_node_t structure(s) need to be |
| 722 | initialized and arranged in a linked list at link->dev. |
| 723 | */ |
| 724 | sprintf(dev->node.dev_name, "ni_daq_700"); |
| 725 | dev->node.major = dev->node.minor = 0; |
| 726 | link->dev_node = &dev->node; |
| 727 | |
| 728 | /* Finally, report what we've done */ |
| 729 | printk(KERN_INFO "%s: index 0x%02x", |
| 730 | dev->node.dev_name, link->conf.ConfigIndex); |
| 731 | if (link->conf.Attributes & CONF_ENABLE_IRQ) |
| 732 | printk(", irq %d", link->irq.AssignedIRQ); |
| 733 | if (link->io.NumPorts1) |
| 734 | printk(", io 0x%04x-0x%04x", link->io.BasePort1, |
| 735 | link->io.BasePort1 + link->io.NumPorts1 - 1); |
| 736 | if (link->io.NumPorts2) |
| 737 | printk(" & 0x%04x-0x%04x", link->io.BasePort2, |
| 738 | link->io.BasePort2 + link->io.NumPorts2 - 1); |
| 739 | if (link->win) |
| 740 | printk(", mem 0x%06lx-0x%06lx", req.Base, |
| 741 | req.Base + req.Size - 1); |
| 742 | printk("\n"); |
| 743 | |
| 744 | return; |
| 745 | |
| 746 | cs_failed: |
| 747 | printk(KERN_INFO "ni_daq_700 cs failed"); |
| 748 | dio700_release(link); |
| 749 | |
| 750 | } /* dio700_config */ |
| 751 | |
| 752 | static void dio700_release(struct pcmcia_device *link) |
| 753 | { |
| 754 | DEBUG(0, "dio700_release(0x%p)\n", link); |
| 755 | |
| 756 | pcmcia_disable_device(link); |
| 757 | } /* dio700_release */ |
| 758 | |
| 759 | /*====================================================================== |
| 760 | |
| 761 | The card status event handler. Mostly, this schedules other |
| 762 | stuff to run after an event is received. |
| 763 | |
| 764 | When a CARD_REMOVAL event is received, we immediately set a |
| 765 | private flag to block future accesses to this device. All the |
| 766 | functions that actually access the device should check this flag |
| 767 | to make sure the card is still present. |
| 768 | |
| 769 | ======================================================================*/ |
| 770 | |
| 771 | static int dio700_cs_suspend(struct pcmcia_device *link) |
| 772 | { |
| 773 | local_info_t *local = link->priv; |
| 774 | |
| 775 | /* Mark the device as stopped, to block IO until later */ |
| 776 | local->stop = 1; |
| 777 | return 0; |
| 778 | } /* dio700_cs_suspend */ |
| 779 | |
| 780 | static int dio700_cs_resume(struct pcmcia_device *link) |
| 781 | { |
| 782 | local_info_t *local = link->priv; |
| 783 | |
| 784 | local->stop = 0; |
| 785 | return 0; |
| 786 | } /* dio700_cs_resume */ |
| 787 | |
| 788 | /*====================================================================*/ |
| 789 | |
| 790 | static struct pcmcia_device_id dio700_cs_ids[] = { |
| 791 | /* N.B. These IDs should match those in dio700_boards */ |
| 792 | PCMCIA_DEVICE_MANF_CARD(0x010b, 0x4743), /* daqcard-700 */ |
| 793 | PCMCIA_DEVICE_NULL |
| 794 | }; |
| 795 | |
| 796 | MODULE_LICENSE("GPL"); |
| 797 | MODULE_DEVICE_TABLE(pcmcia, dio700_cs_ids); |
| 798 | |
| 799 | struct pcmcia_driver dio700_cs_driver = { |
| 800 | .probe = dio700_cs_attach, |
| 801 | .remove = dio700_cs_detach, |
| 802 | .suspend = dio700_cs_suspend, |
| 803 | .resume = dio700_cs_resume, |
| 804 | .id_table = dio700_cs_ids, |
| 805 | .owner = THIS_MODULE, |
| 806 | .drv = { |
| 807 | .name = dev_info, |
| 808 | }, |
| 809 | }; |
| 810 | |
| 811 | static int __init init_dio700_cs(void) |
| 812 | { |
| 813 | printk("ni_daq_700: cs-init \n"); |
| 814 | DEBUG(0, "%s\n", version); |
| 815 | pcmcia_register_driver(&dio700_cs_driver); |
| 816 | return 0; |
| 817 | } |
| 818 | |
| 819 | static void __exit exit_dio700_cs(void) |
| 820 | { |
| 821 | DEBUG(0, "ni_daq_700: unloading\n"); |
| 822 | pcmcia_unregister_driver(&dio700_cs_driver); |
| 823 | } |
| 824 | int __init init_module(void) |
| 825 | { |
| 826 | int ret; |
| 827 | |
| 828 | ret = init_dio700_cs(); |
| 829 | if (ret < 0) |
| 830 | return ret; |
| 831 | |
| 832 | return comedi_driver_register(&driver_dio700); |
| 833 | } |
| 834 | |
| 835 | void __exit cleanup_module(void) |
| 836 | { |
| 837 | exit_dio700_cs(); |
| 838 | comedi_driver_unregister(&driver_dio700); |
| 839 | } |