5 COMEDI - Linux Control and Measurement Device Interface
6 Copyright (C) 2000 David A. Schleef <ds@schleef.org>
7 Copyright (C) 2000 Chris R. Baugher <baugher@enteract.com>
8 Copyright (C) 2001,2002 Frank Mori Hess <fmhess@users.sourceforge.net>
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
22 Description: DAS16 compatible boards
23 Author: Sam Moore, Warren Jasper, ds, Chris Baugher, Frank Hess, Roman Fietze
24 Devices: [Keithley Metrabyte] DAS-16 (das-16), DAS-16G (das-16g),
25 DAS-16F (das-16f), DAS-1201 (das-1201), DAS-1202 (das-1202),
26 DAS-1401 (das-1401), DAS-1402 (das-1402), DAS-1601 (das-1601),
28 [ComputerBoards] PC104-DAS16/JR (pc104-das16jr),
29 PC104-DAS16JR/16 (pc104-das16jr/16),
30 CIO-DAS16JR/16 (cio-das16jr/16),
31 CIO-DAS16/JR (cio-das16/jr), CIO-DAS1401/12 (cio-das1401/12),
32 CIO-DAS1402/12 (cio-das1402/12), CIO-DAS1402/16 (cio-das1402/16),
33 CIO-DAS1601/12 (cio-das1601/12), CIO-DAS1602/12 (cio-das1602/12),
34 CIO-DAS1602/16 (cio-das1602/16), CIO-DAS16/330 (cio-das16/330)
38 A rewrite of the das16 and das1600 drivers.
41 [1] - irq (does nothing, irq is not used anymore)
42 [2] - dma (optional, required for comedi_command support)
43 [3] - master clock speed in MHz (optional, 1 or 10, ignored if
44 board can probe clock, defaults to 1)
45 [4] - analog input range lowest voltage in microvolts (optional,
46 only useful if your board does not have software
48 [5] - analog input range highest voltage in microvolts (optional,
49 only useful if board does not have software programmable
51 [6] - analog output range lowest voltage in microvolts (optional)
52 [7] - analog output range highest voltage in microvolts (optional)
53 [8] - use timer mode for DMA. Timer mode is needed e.g. for
54 buggy DMA controllers in NS CS5530A (Geode Companion), and for
55 'jr' cards that lack a hardware fifo. This option is no
56 longer needed, since timer mode is _always_ used.
58 Passing a zero for an option is the same as leaving it unspecified.
63 Testing and debugging help provided by Daniel Koch.
67 4919.PDF (das1400, 1600)
69 4923.PDF (das1200, 1400, 1600)
71 Computer boards manuals also available from their website
72 www.measurementcomputing.com
76 #include <linux/module.h>
77 #include <linux/delay.h>
78 #include <linux/pci.h>
79 #include <linux/interrupt.h>
83 #include "../comedidev.h"
87 #include "comedi_fc.h"
93 #define DEBUG_PRINT(format, args...) \
94 printk(KERN_DEBUG "das16: " format, ## args)
96 #define DEBUG_PRINT(format, args...)
99 #define DAS16_SIZE 20 /* number of ioports */
100 #define DAS16_DMA_SIZE 0xff00 /* size in bytes of allocated dma buffer */
108 0 a/d bits 0-3 start 12 bit
109 1 a/d bits 4-11 unused
116 8 status eoc uni/bip interrupt reset
117 9 dma, int, trig ctrl set dma, int
118 a pacer control unused
130 0 a/d bits 0-3 start 12 bit
131 1 a/d bits 4-11 unused
135 8 status eoc uni/bip interrupt reset
136 9 dma, int, trig ctrl set dma, int
137 a pacer control unused
138 b gain status gain control
148 0 a/d bits 0-7 start 16 bit
149 1 a/d bits 8-15 unused
153 8 status eoc uni/bip interrupt reset
154 9 dma, int, trig ctrl set dma, int
155 a pacer control unused
156 b gain status gain control
167 0 a/d bits 0-3 start 12 bit
168 1 a/d bits 4-11 unused
175 8 status eoc uni/bip interrupt reset
176 9 dma, int, trig ctrl set dma, int
177 a pacer control unused
178 b gain status gain control
181 404 unused conversion enable
182 405 unused burst enable
183 406 unused das1600 enable
188 /* size in bytes of a sample from board */
189 static const int sample_size = 2;
192 #define DAS16_AI_LSB 0
193 #define DAS16_AI_MSB 1
196 #define DAS16_AO_LSB(x) ((x) ? 6 : 4)
197 #define DAS16_AO_MSB(x) ((x) ? 7 : 5)
198 #define DAS16_STATUS 8
200 #define UNIPOLAR (1<<6)
201 #define DAS16_MUXBIT (1<<5)
202 #define DAS16_INT (1<<4)
203 #define DAS16_CONTROL 9
204 #define DAS16_INTE (1<<7)
205 #define DAS16_IRQ(x) (((x) & 0x7) << 4)
206 #define DMA_ENABLE (1<<2)
207 #define PACING_MASK 0x3
208 #define INT_PACER 0x03
209 #define EXT_PACER 0x02
210 #define DAS16_SOFT 0x00
211 #define DAS16_PACER 0x0A
212 #define DAS16_CTR0 (1<<1)
213 #define DAS16_TRIG0 (1<<0)
214 #define BURST_LEN_BITS(x) (((x) & 0xf) << 4)
215 #define DAS16_GAIN 0x0B
216 #define DAS16_CNTR0_DATA 0x0C
217 #define DAS16_CNTR1_DATA 0x0D
218 #define DAS16_CNTR2_DATA 0x0E
219 #define DAS16_CNTR_CONTROL 0x0F
220 #define DAS16_TERM_CNT 0x00
221 #define DAS16_ONE_SHOT 0x02
222 #define DAS16_RATE_GEN 0x04
223 #define DAS16_CNTR_LSB_MSB 0x30
224 #define DAS16_CNTR0 0x00
225 #define DAS16_CNTR1 0x40
226 #define DAS16_CNTR2 0x80
228 #define DAS1600_CONV 0x404
229 #define DAS1600_CONV_DISABLE 0x40
230 #define DAS1600_BURST 0x405
231 #define DAS1600_BURST_VAL 0x40
232 #define DAS1600_ENABLE 0x406
233 #define DAS1600_ENABLE_VAL 0x40
234 #define DAS1600_STATUS_B 0x407
235 #define DAS1600_BME 0x40
236 #define DAS1600_ME 0x20
237 #define DAS1600_CD 0x10
238 #define DAS1600_WS 0x02
239 #define DAS1600_CLK_10MHZ 0x01
241 static const struct comedi_lrange range_das1x01_bip = {
250 static const struct comedi_lrange range_das1x01_unip = {
259 static const struct comedi_lrange range_das1x02_bip = {
268 static const struct comedi_lrange range_das1x02_unip = {
277 static const struct comedi_lrange range_das16jr = {
291 static const struct comedi_lrange range_das16jr_16 = {
304 static const int das16jr_gainlist[] = { 8, 0, 1, 2, 3, 4, 5, 6, 7 };
305 static const int das16jr_16_gainlist[] = { 0, 1, 2, 3, 4, 5, 6, 7 };
306 static const int das1600_gainlist[] = { 0, 1, 2, 3 };
315 static const int *const das16_gainlists[] = {
323 static const struct comedi_lrange *const das16_ai_uni_lranges[] = {
331 static const struct comedi_lrange *const das16_ai_bip_lranges[] = {
341 unsigned int ai_maxdata;
342 unsigned int ai_speed; /* max conversion speed in nanosec */
344 unsigned int has_ao:1;
346 unsigned int i8255_offset;
347 unsigned int i8254_offset;
353 #define DAS16_TIMEOUT 1000
355 /* Period for timer interrupt in jiffies. It's a function
356 * to deal with possibility of dynamic HZ patches */
357 static inline int timer_period(void)
362 struct das16_private_struct {
363 unsigned int ai_unipolar; /* unipolar flag */
364 unsigned int ai_singleended; /* single ended flag */
365 unsigned int clockbase; /* master clock speed in ns */
366 volatile unsigned int control_state; /* dma, interrupt and trigger control bits */
367 volatile unsigned long adc_byte_count; /* number of bytes remaining */
368 /* divisor dividing master clock to get conversion frequency */
369 unsigned int divisor1;
370 /* divisor dividing master clock to get conversion frequency */
371 unsigned int divisor2;
372 unsigned int dma_chan; /* dma channel */
373 uint16_t *dma_buffer[2];
374 dma_addr_t dma_buffer_addr[2];
375 unsigned int current_buffer;
376 volatile unsigned int dma_transfer_size; /* target number of bytes to transfer per dma shot */
378 * user-defined analog input and output ranges
379 * defined from config options
381 struct comedi_lrange *user_ai_range_table;
382 struct comedi_lrange *user_ao_range_table;
384 struct timer_list timer; /* for timed interrupt */
385 volatile short timer_running;
387 unsigned long extra_iobase;
390 static int das16_cmd_test(struct comedi_device *dev, struct comedi_subdevice *s,
391 struct comedi_cmd *cmd)
393 const struct das16_board *board = comedi_board(dev);
394 struct das16_private_struct *devpriv = dev->private;
396 int gain, start_chan, i;
399 /* Step 1 : check if triggers are trivially valid */
401 err |= cfc_check_trigger_src(&cmd->start_src, TRIG_NOW);
404 /* if board supports burst mode */
405 if (board->size > 0x400)
406 mask |= TRIG_TIMER | TRIG_EXT;
407 err |= cfc_check_trigger_src(&cmd->scan_begin_src, mask);
409 tmp = cmd->convert_src;
410 mask = TRIG_TIMER | TRIG_EXT;
411 /* if board supports burst mode */
412 if (board->size > 0x400)
414 err |= cfc_check_trigger_src(&cmd->convert_src, mask);
416 err |= cfc_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
417 err |= cfc_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE);
422 /* Step 2a : make sure trigger sources are unique */
424 err |= cfc_check_trigger_is_unique(cmd->scan_begin_src);
425 err |= cfc_check_trigger_is_unique(cmd->convert_src);
426 err |= cfc_check_trigger_is_unique(cmd->stop_src);
428 /* Step 2b : and mutually compatible */
430 /* make sure scan_begin_src and convert_src dont conflict */
431 if (cmd->scan_begin_src == TRIG_FOLLOW && cmd->convert_src == TRIG_NOW)
433 if (cmd->scan_begin_src != TRIG_FOLLOW && cmd->convert_src != TRIG_NOW)
439 /* Step 3: check if arguments are trivially valid */
441 err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0);
443 if (cmd->scan_begin_src == TRIG_FOLLOW) /* internal trigger */
444 err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, 0);
446 err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, cmd->chanlist_len);
448 /* check against maximum frequency */
449 if (cmd->scan_begin_src == TRIG_TIMER)
450 err |= cfc_check_trigger_arg_min(&cmd->scan_begin_arg,
451 board->ai_speed * cmd->chanlist_len);
453 if (cmd->convert_src == TRIG_TIMER)
454 err |= cfc_check_trigger_arg_min(&cmd->convert_arg,
457 if (cmd->stop_src == TRIG_NONE)
458 err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0);
463 /* step 4: fix up arguments */
464 if (cmd->scan_begin_src == TRIG_TIMER) {
465 unsigned int tmp = cmd->scan_begin_arg;
466 /* set divisors, correct timing arguments */
467 i8253_cascade_ns_to_timer_2div(devpriv->clockbase,
468 &(devpriv->divisor1),
469 &(devpriv->divisor2),
470 &(cmd->scan_begin_arg),
471 cmd->flags & TRIG_ROUND_MASK);
472 err += (tmp != cmd->scan_begin_arg);
474 if (cmd->convert_src == TRIG_TIMER) {
475 unsigned int tmp = cmd->convert_arg;
476 /* set divisors, correct timing arguments */
477 i8253_cascade_ns_to_timer_2div(devpriv->clockbase,
478 &(devpriv->divisor1),
479 &(devpriv->divisor2),
481 cmd->flags & TRIG_ROUND_MASK);
482 err += (tmp != cmd->convert_arg);
487 /* check channel/gain list against card's limitations */
489 gain = CR_RANGE(cmd->chanlist[0]);
490 start_chan = CR_CHAN(cmd->chanlist[0]);
491 for (i = 1; i < cmd->chanlist_len; i++) {
492 if (CR_CHAN(cmd->chanlist[i]) !=
493 (start_chan + i) % s->n_chan) {
495 "entries in chanlist must be "
496 "consecutive channels, "
497 "counting upwards\n");
500 if (CR_RANGE(cmd->chanlist[i]) != gain) {
502 "entries in chanlist must all "
503 "have the same gain\n");
514 static unsigned int das16_set_pacer(struct comedi_device *dev, unsigned int ns,
517 struct das16_private_struct *devpriv = dev->private;
519 i8253_cascade_ns_to_timer_2div(devpriv->clockbase, &(devpriv->divisor1),
520 &(devpriv->divisor2), &ns,
521 rounding_flags & TRIG_ROUND_MASK);
523 /* Write the values of ctr1 and ctr2 into counters 1 and 2 */
524 i8254_load(dev->iobase + DAS16_CNTR0_DATA, 0, 1, devpriv->divisor1, 2);
525 i8254_load(dev->iobase + DAS16_CNTR0_DATA, 0, 2, devpriv->divisor2, 2);
530 static int das16_cmd_exec(struct comedi_device *dev, struct comedi_subdevice *s)
532 const struct das16_board *board = comedi_board(dev);
533 struct das16_private_struct *devpriv = dev->private;
534 struct comedi_async *async = s->async;
535 struct comedi_cmd *cmd = &async->cmd;
540 if (cmd->flags & TRIG_RT) {
541 comedi_error(dev, "isa dma transfers cannot be performed with "
542 "TRIG_RT, aborting");
546 devpriv->adc_byte_count =
547 cmd->stop_arg * cmd->chanlist_len * sizeof(uint16_t);
549 /* disable conversions for das1600 mode */
550 if (board->size > 0x400)
551 outb(DAS1600_CONV_DISABLE, dev->iobase + DAS1600_CONV);
553 /* set scan limits */
554 byte = CR_CHAN(cmd->chanlist[0]);
555 byte |= CR_CHAN(cmd->chanlist[cmd->chanlist_len - 1]) << 4;
556 outb(byte, dev->iobase + DAS16_MUX);
558 /* set gain (this is also burst rate register but according to
559 * computer boards manual, burst rate does nothing, even on
561 if (board->ai_pg != das16_pg_none) {
562 range = CR_RANGE(cmd->chanlist[0]);
563 outb((das16_gainlists[board->ai_pg])[range],
564 dev->iobase + DAS16_GAIN);
567 /* set counter mode and counts */
569 das16_set_pacer(dev, cmd->convert_arg,
570 cmd->flags & TRIG_ROUND_MASK);
571 DEBUG_PRINT("pacer period: %d ns\n", cmd->convert_arg);
573 /* enable counters */
575 /* Enable burst mode if appropriate. */
576 if (board->size > 0x400) {
577 if (cmd->convert_src == TRIG_NOW) {
578 outb(DAS1600_BURST_VAL, dev->iobase + DAS1600_BURST);
579 /* set burst length */
580 byte |= BURST_LEN_BITS(cmd->chanlist_len - 1);
582 outb(0, dev->iobase + DAS1600_BURST);
585 outb(byte, dev->iobase + DAS16_PACER);
587 /* set up dma transfer */
588 flags = claim_dma_lock();
589 disable_dma(devpriv->dma_chan);
590 /* clear flip-flop to make sure 2-byte registers for
591 * count and address get set correctly */
592 clear_dma_ff(devpriv->dma_chan);
593 devpriv->current_buffer = 0;
594 set_dma_addr(devpriv->dma_chan,
595 devpriv->dma_buffer_addr[devpriv->current_buffer]);
596 devpriv->dma_transfer_size = DAS16_DMA_SIZE;
597 set_dma_count(devpriv->dma_chan, devpriv->dma_transfer_size);
598 enable_dma(devpriv->dma_chan);
599 release_dma_lock(flags);
601 /* set up interrupt */
602 devpriv->timer_running = 1;
603 devpriv->timer.expires = jiffies + timer_period();
604 add_timer(&devpriv->timer);
605 devpriv->control_state &= ~DAS16_INTE;
606 devpriv->control_state |= DMA_ENABLE;
607 devpriv->control_state &= ~PACING_MASK;
608 if (cmd->convert_src == TRIG_EXT)
609 devpriv->control_state |= EXT_PACER;
611 devpriv->control_state |= INT_PACER;
612 outb(devpriv->control_state, dev->iobase + DAS16_CONTROL);
614 /* Enable conversions if using das1600 mode */
615 if (board->size > 0x400)
616 outb(0, dev->iobase + DAS1600_CONV);
622 static int das16_cancel(struct comedi_device *dev, struct comedi_subdevice *s)
624 const struct das16_board *board = comedi_board(dev);
625 struct das16_private_struct *devpriv = dev->private;
628 spin_lock_irqsave(&dev->spinlock, flags);
629 /* disable interrupts, dma and pacer clocked conversions */
630 devpriv->control_state &= ~DAS16_INTE & ~PACING_MASK & ~DMA_ENABLE;
631 outb(devpriv->control_state, dev->iobase + DAS16_CONTROL);
632 disable_dma(devpriv->dma_chan);
634 /* disable SW timer */
635 if (devpriv->timer_running) {
636 devpriv->timer_running = 0;
637 del_timer(&devpriv->timer);
640 /* disable burst mode */
641 if (board->size > 0x400)
642 outb(0, dev->iobase + DAS1600_BURST);
645 spin_unlock_irqrestore(&dev->spinlock, flags);
650 static void das16_reset(struct comedi_device *dev)
652 outb(0, dev->iobase + DAS16_STATUS);
653 outb(0, dev->iobase + DAS16_CONTROL);
654 outb(0, dev->iobase + DAS16_PACER);
655 outb(0, dev->iobase + DAS16_CNTR_CONTROL);
658 static int das16_ai_insn_read(struct comedi_device *dev,
659 struct comedi_subdevice *s,
660 struct comedi_insn *insn,
663 const struct das16_board *board = comedi_board(dev);
664 struct das16_private_struct *devpriv = dev->private;
669 /* disable interrupts and pacing */
670 devpriv->control_state &= ~DAS16_INTE & ~DMA_ENABLE & ~PACING_MASK;
671 outb(devpriv->control_state, dev->iobase + DAS16_CONTROL);
673 /* set multiplexer */
674 chan = CR_CHAN(insn->chanspec);
675 chan |= CR_CHAN(insn->chanspec) << 4;
676 outb(chan, dev->iobase + DAS16_MUX);
679 if (board->ai_pg != das16_pg_none) {
680 range = CR_RANGE(insn->chanspec);
681 outb((das16_gainlists[board->ai_pg])[range],
682 dev->iobase + DAS16_GAIN);
685 for (n = 0; n < insn->n; n++) {
688 /* trigger conversion */
689 outb_p(0, dev->iobase + DAS16_TRIG);
691 for (i = 0; i < DAS16_TIMEOUT; i++) {
692 if (!(inb(dev->iobase + DAS16_STATUS) & BUSY))
695 if (i == DAS16_TIMEOUT) {
696 printk("das16: timeout\n");
700 val = inb(dev->iobase + DAS16_AI_MSB) << 8;
701 val |= inb(dev->iobase + DAS16_AI_LSB);
702 if (s->maxdata == 0x0fff)
712 static int das16_di_insn_bits(struct comedi_device *dev,
713 struct comedi_subdevice *s,
714 struct comedi_insn *insn,
717 data[1] = inb(dev->iobase + DAS16_DIO) & 0xf;
722 static int das16_do_insn_bits(struct comedi_device *dev,
723 struct comedi_subdevice *s,
724 struct comedi_insn *insn,
727 unsigned int mask = data[0];
728 unsigned int bits = data[1];
732 s->state |= (bits & mask);
734 outb(s->state, dev->iobase + DAS16_DIO);
742 static int das16_ao_insn_write(struct comedi_device *dev,
743 struct comedi_subdevice *s,
744 struct comedi_insn *insn,
747 unsigned int chan = CR_CHAN(insn->chanspec);
751 for (i = 0; i < insn->n; i++) {
755 outb(val & 0xff, dev->iobase + DAS16_AO_LSB(chan));
756 outb((val >> 8) & 0xff, dev->iobase + DAS16_AO_MSB(chan));
762 /* the pc104-das16jr (at least) has problems if the dma
763 transfer is interrupted in the middle of transferring
764 a 16 bit sample, so this function takes care to get
765 an even transfer count after disabling dma
768 static int disable_dma_on_even(struct comedi_device *dev)
770 struct das16_private_struct *devpriv = dev->private;
773 static const int disable_limit = 100;
774 static const int enable_timeout = 100;
776 disable_dma(devpriv->dma_chan);
777 residue = get_dma_residue(devpriv->dma_chan);
778 for (i = 0; i < disable_limit && (residue % 2); ++i) {
780 enable_dma(devpriv->dma_chan);
781 for (j = 0; j < enable_timeout; ++j) {
784 new_residue = get_dma_residue(devpriv->dma_chan);
785 if (new_residue != residue)
788 disable_dma(devpriv->dma_chan);
789 residue = get_dma_residue(devpriv->dma_chan);
791 if (i == disable_limit) {
792 comedi_error(dev, "failed to get an even dma transfer, "
793 "could be trouble.");
798 static void das16_interrupt(struct comedi_device *dev)
800 struct das16_private_struct *devpriv = dev->private;
801 unsigned long dma_flags, spin_flags;
802 struct comedi_subdevice *s = dev->read_subdev;
803 struct comedi_async *async;
804 struct comedi_cmd *cmd;
805 int num_bytes, residue;
808 if (!dev->attached) {
809 comedi_error(dev, "premature interrupt");
812 /* initialize async here to make sure it is not NULL */
816 spin_lock_irqsave(&dev->spinlock, spin_flags);
817 if ((devpriv->control_state & DMA_ENABLE) == 0) {
818 spin_unlock_irqrestore(&dev->spinlock, spin_flags);
819 DEBUG_PRINT("interrupt while dma disabled?\n");
823 dma_flags = claim_dma_lock();
824 clear_dma_ff(devpriv->dma_chan);
825 residue = disable_dma_on_even(dev);
827 /* figure out how many points to read */
828 if (residue > devpriv->dma_transfer_size) {
829 comedi_error(dev, "residue > transfer size!\n");
830 async->events |= COMEDI_CB_ERROR | COMEDI_CB_EOA;
833 num_bytes = devpriv->dma_transfer_size - residue;
835 if (cmd->stop_src == TRIG_COUNT &&
836 num_bytes >= devpriv->adc_byte_count) {
837 num_bytes = devpriv->adc_byte_count;
838 async->events |= COMEDI_CB_EOA;
841 buffer_index = devpriv->current_buffer;
842 devpriv->current_buffer = (devpriv->current_buffer + 1) % 2;
843 devpriv->adc_byte_count -= num_bytes;
846 if ((async->events & COMEDI_CB_EOA) == 0) {
847 set_dma_addr(devpriv->dma_chan,
848 devpriv->dma_buffer_addr[devpriv->current_buffer]);
849 set_dma_count(devpriv->dma_chan, devpriv->dma_transfer_size);
850 enable_dma(devpriv->dma_chan);
852 release_dma_lock(dma_flags);
854 spin_unlock_irqrestore(&dev->spinlock, spin_flags);
856 cfc_write_array_to_buffer(s,
857 devpriv->dma_buffer[buffer_index], num_bytes);
859 cfc_handle_events(dev, s);
862 static void das16_timer_interrupt(unsigned long arg)
864 struct comedi_device *dev = (struct comedi_device *)arg;
865 struct das16_private_struct *devpriv = dev->private;
867 das16_interrupt(dev);
869 if (devpriv->timer_running)
870 mod_timer(&devpriv->timer, jiffies + timer_period());
873 static void reg_dump(struct comedi_device *dev)
875 DEBUG_PRINT("********DAS1600 REGISTER DUMP********\n");
876 DEBUG_PRINT("DAS16_MUX: %x\n", inb(dev->iobase + DAS16_MUX));
877 DEBUG_PRINT("DAS16_DIO: %x\n", inb(dev->iobase + DAS16_DIO));
878 DEBUG_PRINT("DAS16_STATUS: %x\n", inb(dev->iobase + DAS16_STATUS));
879 DEBUG_PRINT("DAS16_CONTROL: %x\n", inb(dev->iobase + DAS16_CONTROL));
880 DEBUG_PRINT("DAS16_PACER: %x\n", inb(dev->iobase + DAS16_PACER));
881 DEBUG_PRINT("DAS16_GAIN: %x\n", inb(dev->iobase + DAS16_GAIN));
882 DEBUG_PRINT("DAS16_CNTR_CONTROL: %x\n",
883 inb(dev->iobase + DAS16_CNTR_CONTROL));
884 DEBUG_PRINT("DAS1600_CONV: %x\n", inb(dev->iobase + DAS1600_CONV));
885 DEBUG_PRINT("DAS1600_BURST: %x\n", inb(dev->iobase + DAS1600_BURST));
886 DEBUG_PRINT("DAS1600_ENABLE: %x\n", inb(dev->iobase + DAS1600_ENABLE));
887 DEBUG_PRINT("DAS1600_STATUS_B: %x\n",
888 inb(dev->iobase + DAS1600_STATUS_B));
891 static int das16_probe(struct comedi_device *dev, struct comedi_devconfig *it)
893 const struct das16_board *board = comedi_board(dev);
894 struct das16_private_struct *devpriv = dev->private;
898 /* status is available on all boards */
900 status = inb(dev->iobase + DAS16_STATUS);
902 if ((status & UNIPOLAR))
903 devpriv->ai_unipolar = 1;
905 devpriv->ai_unipolar = 0;
908 if ((status & DAS16_MUXBIT))
909 devpriv->ai_singleended = 1;
911 devpriv->ai_singleended = 0;
914 /* diobits indicates boards */
916 diobits = inb(dev->iobase + DAS16_DIO) & 0xf0;
918 printk(KERN_INFO " id bits are 0x%02x\n", diobits);
919 if (board->id != diobits) {
920 printk(KERN_INFO " requested board's id bits are 0x%x (ignore)\n",
927 static int das1600_mode_detect(struct comedi_device *dev)
929 struct das16_private_struct *devpriv = dev->private;
932 status = inb(dev->iobase + DAS1600_STATUS_B);
934 if (status & DAS1600_CLK_10MHZ) {
935 devpriv->clockbase = 100;
936 printk(KERN_INFO " 10MHz pacer clock\n");
938 devpriv->clockbase = 1000;
939 printk(KERN_INFO " 1MHz pacer clock\n");
947 static void das16_ai_munge(struct comedi_device *dev,
948 struct comedi_subdevice *s, void *array,
949 unsigned int num_bytes,
950 unsigned int start_chan_index)
952 unsigned int i, num_samples = num_bytes / sizeof(short);
955 for (i = 0; i < num_samples; i++) {
956 data[i] = le16_to_cpu(data[i]);
957 if (s->maxdata == 0x0fff)
959 data[i] &= s->maxdata;
969 * 3 Clock speed (in MHz)
971 static int das16_attach(struct comedi_device *dev, struct comedi_devconfig *it)
973 const struct das16_board *board = comedi_board(dev);
974 struct das16_private_struct *devpriv;
975 struct comedi_subdevice *s;
976 struct comedi_krange *user_ai_range;
977 struct comedi_krange *user_ao_range;
978 unsigned int dma_chan = it->options[2];
981 /* check that clock setting is valid */
982 if (it->options[3]) {
983 if (it->options[3] != 0 &&
984 it->options[3] != 1 && it->options[3] != 10) {
986 ("\n Invalid option. Master clock must be set "
987 "to 1 or 10 (MHz)\n");
992 devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
996 if (board->size < 0x400) {
997 ret = comedi_request_region(dev, it->options[0], board->size);
1001 ret = comedi_request_region(dev, it->options[0], 0x10);
1004 /* Request an additional region for the 8255 */
1005 ret = __comedi_request_region(dev, dev->iobase + 0x400,
1006 board->size & 0x3ff);
1009 devpriv->extra_iobase = dev->iobase + 0x400;
1012 /* probe id bits to make sure they are consistent */
1013 if (das16_probe(dev, it)) {
1014 printk(KERN_ERR " id bits do not match selected board, aborting\n");
1018 /* get master clock speed */
1019 if (board->size < 0x400) {
1021 devpriv->clockbase = 1000 / it->options[3];
1023 devpriv->clockbase = 1000; /* 1 MHz default */
1025 das1600_mode_detect(dev);
1028 /* initialize dma */
1029 if (dma_chan == 1 || dma_chan == 3) {
1030 unsigned long flags;
1033 if (request_dma(dma_chan, dev->board_name)) {
1034 dev_err(dev->class_dev,
1035 "failed to request dma channel %i\n",
1039 devpriv->dma_chan = dma_chan;
1041 /* allocate dma buffers */
1042 for (i = 0; i < 2; i++) {
1045 p = pci_alloc_consistent(NULL, DAS16_DMA_SIZE,
1046 &devpriv->dma_buffer_addr[i]);
1049 devpriv->dma_buffer[i] = p;
1052 flags = claim_dma_lock();
1053 disable_dma(devpriv->dma_chan);
1054 set_dma_mode(devpriv->dma_chan, DMA_MODE_READ);
1055 release_dma_lock(flags);
1057 init_timer(&(devpriv->timer));
1058 devpriv->timer.function = das16_timer_interrupt;
1059 devpriv->timer.data = (unsigned long)dev;
1062 /* get any user-defined input range */
1063 if (board->ai_pg == das16_pg_none &&
1064 (it->options[4] || it->options[5])) {
1065 /* allocate single-range range table */
1066 devpriv->user_ai_range_table =
1067 kmalloc(sizeof(struct comedi_lrange) +
1068 sizeof(struct comedi_krange), GFP_KERNEL);
1069 /* initialize ai range */
1070 devpriv->user_ai_range_table->length = 1;
1071 user_ai_range = devpriv->user_ai_range_table->range;
1072 user_ai_range->min = it->options[4];
1073 user_ai_range->max = it->options[5];
1074 user_ai_range->flags = UNIT_volt;
1076 /* get any user-defined output range */
1077 if (it->options[6] || it->options[7]) {
1078 /* allocate single-range range table */
1079 devpriv->user_ao_range_table =
1080 kmalloc(sizeof(struct comedi_lrange) +
1081 sizeof(struct comedi_krange), GFP_KERNEL);
1082 /* initialize ao range */
1083 devpriv->user_ao_range_table->length = 1;
1084 user_ao_range = devpriv->user_ao_range_table->range;
1085 user_ao_range->min = it->options[6];
1086 user_ao_range->max = it->options[7];
1087 user_ao_range->flags = UNIT_volt;
1090 ret = comedi_alloc_subdevices(dev, 5);
1094 /* Analog Input subdevice */
1095 s = &dev->subdevices[0];
1096 s->type = COMEDI_SUBD_AI;
1097 s->subdev_flags = SDF_READABLE;
1098 if (devpriv->ai_singleended) {
1099 s->subdev_flags |= SDF_GROUND;
1102 s->subdev_flags |= SDF_DIFF;
1105 s->len_chanlist = s->n_chan;
1106 s->maxdata = board->ai_maxdata;
1107 if (devpriv->user_ai_range_table) { /* user defined ai range */
1108 s->range_table = devpriv->user_ai_range_table;
1109 } else if (devpriv->ai_unipolar) {
1110 s->range_table = das16_ai_uni_lranges[board->ai_pg];
1112 s->range_table = das16_ai_bip_lranges[board->ai_pg];
1114 s->insn_read = das16_ai_insn_read;
1115 if (devpriv->dma_chan) {
1116 dev->read_subdev = s;
1117 s->subdev_flags |= SDF_CMD_READ;
1118 s->do_cmdtest = das16_cmd_test;
1119 s->do_cmd = das16_cmd_exec;
1120 s->cancel = das16_cancel;
1121 s->munge = das16_ai_munge;
1124 /* Analog Output subdevice */
1125 s = &dev->subdevices[1];
1126 if (board->has_ao) {
1127 s->type = COMEDI_SUBD_AO;
1128 s->subdev_flags = SDF_WRITABLE;
1130 s->maxdata = 0x0fff;
1131 if (devpriv->user_ao_range_table)
1132 s->range_table = devpriv->user_ao_range_table;
1134 s->range_table = &range_unknown;
1136 s->insn_write = das16_ao_insn_write;
1138 s->type = COMEDI_SUBD_UNUSED;
1141 /* Digital Input subdevice */
1142 s = &dev->subdevices[2];
1143 s->type = COMEDI_SUBD_DI;
1144 s->subdev_flags = SDF_READABLE;
1147 s->range_table = &range_digital;
1148 s->insn_bits = das16_di_insn_bits;
1150 /* Digital Output subdevice */
1151 s = &dev->subdevices[3];
1152 s->type = COMEDI_SUBD_DO;
1153 s->subdev_flags = SDF_WRITABLE;
1156 s->range_table = &range_digital;
1157 s->insn_bits = das16_do_insn_bits;
1159 /* initialize digital output lines */
1160 outb(s->state, dev->iobase + DAS16_DIO);
1162 s = &dev->subdevices[4];
1164 if (board->i8255_offset != 0) {
1165 subdev_8255_init(dev, s, NULL, (dev->iobase +
1166 board->i8255_offset));
1168 s->type = COMEDI_SUBD_UNUSED;
1172 /* set the interrupt level */
1173 devpriv->control_state = DAS16_IRQ(dev->irq);
1174 outb(devpriv->control_state, dev->iobase + DAS16_CONTROL);
1176 /* turn on das1600 mode if available */
1177 if (board->size > 0x400) {
1178 outb(DAS1600_ENABLE_VAL, dev->iobase + DAS1600_ENABLE);
1179 outb(0, dev->iobase + DAS1600_CONV);
1180 outb(0, dev->iobase + DAS1600_BURST);
1186 static void das16_detach(struct comedi_device *dev)
1188 const struct das16_board *board = comedi_board(dev);
1189 struct das16_private_struct *devpriv = dev->private;
1194 for (i = 0; i < 2; i++) {
1195 if (devpriv->dma_buffer[i])
1196 pci_free_consistent(NULL, DAS16_DMA_SIZE,
1197 devpriv->dma_buffer[i],
1199 dma_buffer_addr[i]);
1201 if (devpriv->dma_chan)
1202 free_dma(devpriv->dma_chan);
1203 kfree(devpriv->user_ai_range_table);
1204 kfree(devpriv->user_ao_range_table);
1206 if (devpriv->extra_iobase)
1207 release_region(devpriv->extra_iobase, board->size & 0x3ff);
1208 comedi_legacy_detach(dev);
1211 static const struct das16_board das16_boards[] = {
1214 .ai_maxdata = 0x0fff,
1216 .ai_pg = das16_pg_none,
1218 .i8255_offset = 0x10,
1219 .i8254_offset = 0x0c,
1224 .ai_maxdata = 0x0fff,
1226 .ai_pg = das16_pg_none,
1228 .i8255_offset = 0x10,
1229 .i8254_offset = 0x0c,
1234 .ai_maxdata = 0x0fff,
1236 .ai_pg = das16_pg_none,
1238 .i8255_offset = 0x10,
1239 .i8254_offset = 0x0c,
1243 .name = "cio-das16",
1244 .ai_maxdata = 0x0fff,
1246 .ai_pg = das16_pg_none,
1248 .i8255_offset = 0x10,
1249 .i8254_offset = 0x0c,
1253 .name = "cio-das16/f",
1254 .ai_maxdata = 0x0fff,
1256 .ai_pg = das16_pg_none,
1258 .i8255_offset = 0x10,
1259 .i8254_offset = 0x0c,
1263 .name = "cio-das16/jr",
1264 .ai_maxdata = 0x0fff,
1266 .ai_pg = das16_pg_16jr,
1268 .i8254_offset = 0x0c,
1272 .name = "pc104-das16jr",
1273 .ai_maxdata = 0x0fff,
1275 .ai_pg = das16_pg_16jr,
1277 .i8254_offset = 0x0c,
1281 .name = "cio-das16jr/16",
1282 .ai_maxdata = 0xffff,
1284 .ai_pg = das16_pg_16jr_16,
1286 .i8254_offset = 0x0c,
1290 .name = "pc104-das16jr/16",
1291 .ai_maxdata = 0xffff,
1293 .ai_pg = das16_pg_16jr_16,
1295 .i8254_offset = 0x0c,
1300 .ai_maxdata = 0x0fff,
1302 .ai_pg = das16_pg_none,
1303 .i8255_offset = 0x400,
1304 .i8254_offset = 0x0c,
1309 .ai_maxdata = 0x0fff,
1311 .ai_pg = das16_pg_none,
1312 .i8255_offset = 0x400,
1313 .i8254_offset = 0x0c,
1318 .ai_maxdata = 0x0fff,
1320 .ai_pg = das16_pg_1601,
1321 .i8255_offset = 0x0,
1322 .i8254_offset = 0x0c,
1327 .ai_maxdata = 0x0fff,
1329 .ai_pg = das16_pg_1602,
1330 .i8255_offset = 0x0,
1331 .i8254_offset = 0x0c,
1336 .ai_maxdata = 0x0fff,
1338 .ai_pg = das16_pg_1601,
1340 .i8255_offset = 0x400,
1341 .i8254_offset = 0x0c,
1346 .ai_maxdata = 0x0fff,
1348 .ai_pg = das16_pg_1602,
1350 .i8255_offset = 0x400,
1351 .i8254_offset = 0x0c,
1355 .name = "cio-das1401/12",
1356 .ai_maxdata = 0x0fff,
1358 .ai_pg = das16_pg_1601,
1360 .i8254_offset = 0x0c,
1364 .name = "cio-das1402/12",
1365 .ai_maxdata = 0x0fff,
1367 .ai_pg = das16_pg_1602,
1369 .i8254_offset = 0x0c,
1373 .name = "cio-das1402/16",
1374 .ai_maxdata = 0xffff,
1376 .ai_pg = das16_pg_1602,
1378 .i8254_offset = 0x0c,
1382 .name = "cio-das1601/12",
1383 .ai_maxdata = 0x0fff,
1385 .ai_pg = das16_pg_1601,
1387 .i8255_offset = 0x400,
1388 .i8254_offset = 0x0c,
1392 .name = "cio-das1602/12",
1393 .ai_maxdata = 0x0fff,
1395 .ai_pg = das16_pg_1602,
1397 .i8255_offset = 0x400,
1398 .i8254_offset = 0x0c,
1402 .name = "cio-das1602/16",
1403 .ai_maxdata = 0xffff,
1405 .ai_pg = das16_pg_1602,
1407 .i8255_offset = 0x400,
1408 .i8254_offset = 0x0c,
1412 .name = "cio-das16/330",
1413 .ai_maxdata = 0x0fff,
1415 .ai_pg = das16_pg_16jr,
1417 .i8254_offset = 0x0c,
1423 static struct comedi_driver das16_driver = {
1424 .driver_name = "das16",
1425 .module = THIS_MODULE,
1426 .attach = das16_attach,
1427 .detach = das16_detach,
1428 .board_name = &das16_boards[0].name,
1429 .num_names = ARRAY_SIZE(das16_boards),
1430 .offset = sizeof(das16_boards[0]),
1432 module_comedi_driver(das16_driver);
1434 MODULE_AUTHOR("Comedi http://www.comedi.org");
1435 MODULE_DESCRIPTION("Comedi low-level driver");
1436 MODULE_LICENSE("GPL");