2 * comedi/drivers/ni_daq_700.c
3 * Driver for DAQCard-700 DIO only
6 * COMEDI - Linux Control and Measurement Device Interface
7 * Copyright (C) 1998 David A. Schleef <ds@schleef.org>
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.
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.
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.
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)
32 Updated: Thu, 21 Feb 2008 12:07:20 +0000
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.
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).
41 IRQ is assigned but not used.
44 #include <linux/interrupt.h>
45 #include <linux/slab.h>
46 #include "../comedidev.h"
48 #include <linux/ioport.h>
50 #include <pcmcia/cs_types.h>
51 #include <pcmcia/cs.h>
52 #include <pcmcia/cistpl.h>
53 #include <pcmcia/cisreg.h>
54 #include <pcmcia/ds.h>
56 static struct pcmcia_device *pcmcia_cur_dev = NULL;
58 #define DIO700_SIZE 8 /* size of io region used by board */
60 static int dio700_attach(struct comedi_device *dev,
61 struct comedi_devconfig *it);
62 static int dio700_detach(struct comedi_device *dev);
64 enum dio700_bustype { pcmcia_bustype };
68 int device_id; /* device id for pcmcia board */
69 enum dio700_bustype bustype; /* PCMCIA */
70 int have_dio; /* have daqcard-700 dio */
71 /* function pointers so we can use inb/outb or readb/writeb */
73 unsigned int (*read_byte) (unsigned int address);
74 void (*write_byte) (unsigned int byte, unsigned int address);
77 static const struct dio700_board dio700_boards[] = {
79 .name = "daqcard-700",
80 /* 0x10b is manufacturer id, 0x4743 is device id */
82 .bustype = pcmcia_bustype,
87 /* 0x10b is manufacturer id, 0x4743 is device id */
89 .bustype = pcmcia_bustype,
95 * Useful for shorthand access to the particular board structure
97 #define thisboard ((const struct dio700_board *)dev->board_ptr)
99 struct dio700_private {
101 int data; /* number of data points left to be taken */
104 #define devpriv ((struct dio700_private *)dev->private)
106 static struct comedi_driver driver_dio700 = {
107 .driver_name = "ni_daq_700",
108 .module = THIS_MODULE,
109 .attach = dio700_attach,
110 .detach = dio700_detach,
111 .num_names = ARRAY_SIZE(dio700_boards),
112 .board_name = &dio700_boards[0].name,
113 .offset = sizeof(struct dio700_board),
116 /* the real driver routines */
125 struct subdev_700_struct {
126 unsigned long cb_arg;
127 int (*cb_func) (int, int, int, unsigned long);
131 #define CALLBACK_ARG (((struct subdev_700_struct *)s->private)->cb_arg)
132 #define CALLBACK_FUNC (((struct subdev_700_struct *)s->private)->cb_func)
133 #define subdevpriv ((struct subdev_700_struct *)s->private)
135 static void do_config(struct comedi_device *dev, struct comedi_subdevice *s);
137 void subdev_700_interrupt(struct comedi_device *dev, struct comedi_subdevice *s)
141 d = CALLBACK_FUNC(0, _700_DATA, 0, CALLBACK_ARG);
143 comedi_buf_put(s->async, d);
144 s->async->events |= COMEDI_CB_EOS;
146 comedi_event(dev, s);
148 EXPORT_SYMBOL(subdev_700_interrupt);
150 static int subdev_700_cb(int dir, int port, int data, unsigned long arg)
152 /* port is always A for output and B for input (8255 emu) */
153 unsigned long iobase = arg;
156 outb(data, iobase + DIO_W);
159 return inb(iobase + DIO_R);
163 static int subdev_700_insn(struct comedi_device *dev,
164 struct comedi_subdevice *s, struct comedi_insn *insn,
168 s->state &= ~data[0];
169 s->state |= (data[0] & data[1]);
172 CALLBACK_FUNC(1, _700_DATA, s->state & 0xff,
176 data[1] = s->state & 0xff;
177 data[1] |= CALLBACK_FUNC(0, _700_DATA, 0, CALLBACK_ARG) << 8;
182 static int subdev_700_insn_config(struct comedi_device *dev,
183 struct comedi_subdevice *s,
184 struct comedi_insn *insn, unsigned int *data)
188 case INSN_CONFIG_DIO_INPUT:
190 case INSN_CONFIG_DIO_OUTPUT:
192 case INSN_CONFIG_DIO_QUERY:
195 io_bits & (1 << CR_CHAN(insn->chanspec))) ? COMEDI_OUTPUT :
206 static void do_config(struct comedi_device *dev, struct comedi_subdevice *s)
207 { /* use powerup defaults */
211 static int subdev_700_cmdtest(struct comedi_device *dev,
212 struct comedi_subdevice *s,
213 struct comedi_cmd *cmd)
220 tmp = cmd->start_src;
221 cmd->start_src &= TRIG_NOW;
222 if (!cmd->start_src || tmp != cmd->start_src)
225 tmp = cmd->scan_begin_src;
226 cmd->scan_begin_src &= TRIG_EXT;
227 if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src)
230 tmp = cmd->convert_src;
231 cmd->convert_src &= TRIG_FOLLOW;
232 if (!cmd->convert_src || tmp != cmd->convert_src)
235 tmp = cmd->scan_end_src;
236 cmd->scan_end_src &= TRIG_COUNT;
237 if (!cmd->scan_end_src || tmp != cmd->scan_end_src)
241 cmd->stop_src &= TRIG_NONE;
242 if (!cmd->stop_src || tmp != cmd->stop_src)
255 if (cmd->start_arg != 0) {
259 if (cmd->scan_begin_arg != 0) {
260 cmd->scan_begin_arg = 0;
263 if (cmd->convert_arg != 0) {
264 cmd->convert_arg = 0;
267 if (cmd->scan_end_arg != 1) {
268 cmd->scan_end_arg = 1;
271 if (cmd->stop_arg != 0) {
287 static int subdev_700_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
294 static int subdev_700_cancel(struct comedi_device *dev,
295 struct comedi_subdevice *s)
302 int subdev_700_init(struct comedi_device *dev, struct comedi_subdevice *s,
303 int (*cb) (int, int, int, unsigned long), unsigned long arg)
305 s->type = COMEDI_SUBD_DIO;
306 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
308 s->range_table = &range_digital;
311 s->private = kmalloc(sizeof(struct subdev_700_struct), GFP_KERNEL);
317 CALLBACK_FUNC = subdev_700_cb;
321 s->insn_bits = subdev_700_insn;
322 s->insn_config = subdev_700_insn_config;
330 EXPORT_SYMBOL(subdev_700_init);
332 int subdev_700_init_irq(struct comedi_device *dev, struct comedi_subdevice *s,
333 int (*cb) (int, int, int, unsigned long),
338 ret = subdev_700_init(dev, s, cb, arg);
342 s->do_cmdtest = subdev_700_cmdtest;
343 s->do_cmd = subdev_700_cmd;
344 s->cancel = subdev_700_cancel;
346 subdevpriv->have_irq = 1;
350 EXPORT_SYMBOL(subdev_700_init_irq);
352 void subdev_700_cleanup(struct comedi_device *dev, struct comedi_subdevice *s)
355 if (subdevpriv->have_irq)
359 EXPORT_SYMBOL(subdev_700_cleanup);
361 static int dio700_attach(struct comedi_device *dev, struct comedi_devconfig *it)
363 struct comedi_subdevice *s;
364 unsigned long iobase = 0;
366 unsigned int irq = 0;
368 struct pcmcia_device *link;
370 /* allocate and initialize dev->private */
371 if (alloc_private(dev, sizeof(struct dio700_private)) < 0)
374 /* get base address, irq etc. based on bustype */
375 switch (thisboard->bustype) {
377 link = pcmcia_cur_dev; /* XXX hack */
380 iobase = link->io.BasePort1;
386 printk("bug! couldn't determine board type\n");
390 printk("comedi%d: ni_daq_700: %s, io 0x%lx", dev->minor,
391 thisboard->name, iobase);
394 printk(", irq %u", irq);
401 printk("io base address is zero!\n");
405 dev->iobase = iobase;
412 dev->board_name = thisboard->name;
414 if (alloc_subdevices(dev, 1) < 0)
417 /* DAQCard-700 dio */
418 s = dev->subdevices + 0;
419 subdev_700_init(dev, s, NULL, dev->iobase);
424 static int dio700_detach(struct comedi_device *dev)
426 printk("comedi%d: ni_daq_700: cs-remove\n", dev->minor);
429 subdev_700_cleanup(dev, dev->subdevices + 0);
431 if (thisboard->bustype != pcmcia_bustype && dev->iobase)
432 release_region(dev->iobase, DIO700_SIZE);
434 free_irq(dev->irq, dev);
439 /* PCMCIA crap -- watch your words, please! */
441 static void dio700_config(struct pcmcia_device *link);
442 static void dio700_release(struct pcmcia_device *link);
443 static int dio700_cs_suspend(struct pcmcia_device *p_dev);
444 static int dio700_cs_resume(struct pcmcia_device *p_dev);
447 The attach() and detach() entry points are used to create and destroy
448 "instances" of the driver, where each instance represents everything
449 needed to manage one actual PCMCIA card.
452 static int dio700_cs_attach(struct pcmcia_device *);
453 static void dio700_cs_detach(struct pcmcia_device *);
456 You'll also need to prototype all the functions that will actually
457 be used to talk to your device. See 'memory_cs' for a good example
458 of a fully self-sufficient driver; the other drivers rely more or
459 less on other parts of the kernel.
463 The dev_info variable is the "key" that is used to match up this
464 device driver with appropriate cards, through the card configuration
468 static const dev_info_t dev_info = "ni_daq_700";
470 struct local_info_t {
471 struct pcmcia_device *link;
473 struct bus_operations *bus;
476 /*======================================================================
478 dio700_cs_attach() creates an "instance" of the driver, allocating
479 local data structures for one device. The device is registered
482 The dev_link structure is initialized, but we don't actually
483 configure the card at this point -- we wait until we receive a
484 card insertion event.
486 ======================================================================*/
488 static int dio700_cs_attach(struct pcmcia_device *link)
490 struct local_info_t *local;
492 printk(KERN_INFO "ni_daq_700: cs-attach\n");
494 dev_dbg(&link->dev, "dio700_cs_attach()\n");
496 /* Allocate space for private device-specific data */
497 local = kzalloc(sizeof(struct local_info_t), GFP_KERNEL);
504 General socket configuration defaults can go here. In this
505 client, we assume very little, and rely on the CIS for almost
506 everything. In most clients, many details (i.e., number, sizes,
507 and attributes of IO windows) are fixed by the nature of the
508 device, and can be hard-wired here.
510 link->conf.Attributes = 0;
511 link->conf.IntType = INT_MEMORY_AND_IO;
513 pcmcia_cur_dev = link;
518 } /* dio700_cs_attach */
520 /*======================================================================
522 This deletes a driver "instance". The device is de-registered
523 with Card Services. If it has been released, all local data
524 structures are freed. Otherwise, the structures will be freed
525 when the device is released.
527 ======================================================================*/
529 static void dio700_cs_detach(struct pcmcia_device *link)
532 printk(KERN_INFO "ni_daq_700: cs-detach!\n");
534 dev_dbg(&link->dev, "dio700_cs_detach\n");
536 ((struct local_info_t *)link->priv)->stop = 1;
537 dio700_release(link);
539 /* This points to the parent struct local_info_t struct */
542 } /* dio700_cs_detach */
544 /*======================================================================
546 dio700_config() is scheduled to run after a CARD_INSERTION event
547 is received, to configure the PCMCIA socket, and to make the
548 device available to the system.
550 ======================================================================*/
552 static int dio700_pcmcia_config_loop(struct pcmcia_device *p_dev,
553 cistpl_cftable_entry_t *cfg,
554 cistpl_cftable_entry_t *dflt,
558 win_req_t *req = priv_data;
564 /* Does this card need audio output? */
565 if (cfg->flags & CISTPL_CFTABLE_AUDIO) {
566 p_dev->conf.Attributes |= CONF_ENABLE_SPKR;
567 p_dev->conf.Status = CCSR_AUDIO_ENA;
570 /* Do we need to allocate an interrupt? */
571 p_dev->conf.Attributes |= CONF_ENABLE_IRQ;
573 /* IO window settings */
574 p_dev->io.NumPorts1 = p_dev->io.NumPorts2 = 0;
575 if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) {
576 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io;
577 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
578 if (!(io->flags & CISTPL_IO_8BIT))
579 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
580 if (!(io->flags & CISTPL_IO_16BIT))
581 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
582 p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
583 p_dev->io.BasePort1 = io->win[0].base;
584 p_dev->io.NumPorts1 = io->win[0].len;
586 p_dev->io.Attributes2 = p_dev->io.Attributes1;
587 p_dev->io.BasePort2 = io->win[1].base;
588 p_dev->io.NumPorts2 = io->win[1].len;
590 /* This reserves IO space but doesn't actually enable it */
591 if (pcmcia_request_io(p_dev, &p_dev->io) != 0)
595 if ((cfg->mem.nwin > 0) || (dflt->mem.nwin > 0)) {
597 (cfg->mem.nwin) ? &cfg->mem : &dflt->mem;
598 req->Attributes = WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_CM;
599 req->Attributes |= WIN_ENABLE;
600 req->Base = mem->win[0].host_addr;
601 req->Size = mem->win[0].len;
602 if (req->Size < 0x1000)
604 req->AccessSpeed = 0;
605 if (pcmcia_request_window(p_dev, req, &p_dev->win))
608 map.CardOffset = mem->win[0].card_addr;
609 if (pcmcia_map_mem_page(p_dev, p_dev->win, &map))
612 /* If we got this far, we're cool! */
616 static void dio700_config(struct pcmcia_device *link)
621 printk(KERN_INFO "ni_daq_700: cs-config\n");
623 dev_dbg(&link->dev, "dio700_config\n");
625 ret = pcmcia_loop_config(link, dio700_pcmcia_config_loop, &req);
627 dev_warn(&link->dev, "no configuration found\n");
635 This actually configures the PCMCIA socket -- setting up
636 the I/O windows and the interrupt mapping, and putting the
637 card and host interface into "Memory and IO" mode.
639 ret = pcmcia_request_configuration(link, &link->conf);
643 /* Finally, report what we've done */
644 dev_info(&link->dev, "index 0x%02x", link->conf.ConfigIndex);
645 if (link->conf.Attributes & CONF_ENABLE_IRQ)
646 printk(", irq %d", link->irq);
647 if (link->io.NumPorts1)
648 printk(", io 0x%04x-0x%04x", link->io.BasePort1,
649 link->io.BasePort1 + link->io.NumPorts1 - 1);
650 if (link->io.NumPorts2)
651 printk(" & 0x%04x-0x%04x", link->io.BasePort2,
652 link->io.BasePort2 + link->io.NumPorts2 - 1);
654 printk(", mem 0x%06lx-0x%06lx", req.Base,
655 req.Base + req.Size - 1);
661 printk(KERN_INFO "ni_daq_700 cs failed");
662 dio700_release(link);
664 } /* dio700_config */
666 static void dio700_release(struct pcmcia_device *link)
668 dev_dbg(&link->dev, "dio700_release\n");
670 pcmcia_disable_device(link);
671 } /* dio700_release */
673 /*======================================================================
675 The card status event handler. Mostly, this schedules other
676 stuff to run after an event is received.
678 When a CARD_REMOVAL event is received, we immediately set a
679 private flag to block future accesses to this device. All the
680 functions that actually access the device should check this flag
681 to make sure the card is still present.
683 ======================================================================*/
685 static int dio700_cs_suspend(struct pcmcia_device *link)
687 struct local_info_t *local = link->priv;
689 /* Mark the device as stopped, to block IO until later */
692 } /* dio700_cs_suspend */
694 static int dio700_cs_resume(struct pcmcia_device *link)
696 struct local_info_t *local = link->priv;
700 } /* dio700_cs_resume */
702 /*====================================================================*/
704 static struct pcmcia_device_id dio700_cs_ids[] = {
705 /* N.B. These IDs should match those in dio700_boards */
706 PCMCIA_DEVICE_MANF_CARD(0x010b, 0x4743), /* daqcard-700 */
711 MODULE_DEVICE_TABLE(pcmcia, dio700_cs_ids);
712 MODULE_AUTHOR("Fred Brooks <nsaspook@nsaspook.com>");
713 MODULE_DESCRIPTION("Comedi driver for National Instruments "
714 "PCMCIA DAQCard-700 DIO");
715 MODULE_LICENSE("GPL");
717 struct pcmcia_driver dio700_cs_driver = {
718 .probe = dio700_cs_attach,
719 .remove = dio700_cs_detach,
720 .suspend = dio700_cs_suspend,
721 .resume = dio700_cs_resume,
722 .id_table = dio700_cs_ids,
723 .owner = THIS_MODULE,
729 static int __init init_dio700_cs(void)
731 pcmcia_register_driver(&dio700_cs_driver);
735 static void __exit exit_dio700_cs(void)
737 pr_debug("ni_daq_700: unloading\n");
738 pcmcia_unregister_driver(&dio700_cs_driver);
741 int __init init_module(void)
745 ret = init_dio700_cs();
749 return comedi_driver_register(&driver_dio700);
752 void __exit cleanup_module(void)
755 comedi_driver_unregister(&driver_dio700);