2 comedi/drivers/amplc_pci224.c
3 Driver for Amplicon PCI224 and PCI234 AO boards.
5 Copyright (C) 2005 MEV Ltd. <http://www.mev.co.uk/>
7 COMEDI - Linux Control and Measurement Device Interface
8 Copyright (C) 1998,2000 David A. Schleef <ds@schleef.org>
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.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 Description: Amplicon PCI224, PCI234
28 Author: Ian Abbott <abbotti@mev.co.uk>
29 Devices: [Amplicon] PCI224 (amplc_pci224 or pci224),
30 PCI234 (amplc_pci224 or pci234)
31 Updated: Wed, 22 Oct 2008 12:25:08 +0100
32 Status: works, but see caveats
37 - ao_do_cmd mode with the following sources:
39 - start_src TRIG_INT TRIG_EXT
40 - scan_begin_src TRIG_TIMER TRIG_EXT
41 - convert_src TRIG_NOW
42 - scan_end_src TRIG_COUNT
43 - stop_src TRIG_COUNT TRIG_EXT TRIG_NONE
45 The channel list must contain at least one channel with no repeated
46 channels. The scan end count must equal the number of channels in
49 There is only one external trigger source so only one of start_src,
50 scan_begin_src or stop_src may use TRIG_EXT.
52 Configuration options - PCI224:
53 [0] - PCI bus of device (optional).
54 [1] - PCI slot of device (optional).
55 If bus/slot is not specified, the first available PCI device
57 [2] - Select available ranges according to jumper LK1. All channels
58 are set to the same range:
59 0=Jumper position 1-2 (factory default), 4 software-selectable
60 internal voltage references, giving 4 bipolar and 4 unipolar
62 [-10V,+10V], [-5V,+5V], [-2.5V,+2.5V], [-1.25V,+1.25V],
63 [0,+10V], [0,+5V], [0,+2.5V], [0,1.25V].
64 1=Jumper position 2-3, 1 external voltage reference, giving
65 1 bipolar and 1 unipolar range:
66 [-Vext,+Vext], [0,+Vext].
68 Configuration options - PCI234:
69 [0] - PCI bus of device (optional).
70 [1] - PCI slot of device (optional).
71 If bus/slot is not specified, the first available PCI device
73 [2] - Select internal or external voltage reference according to
74 jumper LK1. This affects all channels:
75 0=Jumper position 1-2 (factory default), Vref=5V internal.
76 1=Jumper position 2-3, Vref=Vext external.
77 [3] - Select channel 0 range according to jumper LK2:
78 0=Jumper position 2-3 (factory default), range [-2*Vref,+2*Vref]
79 (10V bipolar when options[2]=0).
80 1=Jumper position 1-2, range [-Vref,+Vref]
81 (5V bipolar when options[2]=0).
82 [4] - Select channel 1 range according to jumper LK3: cf. options[3].
83 [5] - Select channel 2 range according to jumper LK4: cf. options[3].
84 [6] - Select channel 3 range according to jumper LK5: cf. options[3].
86 Passing a zero for an option is the same as leaving it unspecified.
90 1) All channels on the PCI224 share the same range. Any change to the
91 range as a result of insn_write or a streaming command will affect
92 the output voltages of all channels, including those not specified
93 by the instruction or command.
95 2) For the analog output command, the first scan may be triggered
96 falsely at the start of acquisition. This occurs when the DAC scan
97 trigger source is switched from 'none' to 'timer' (scan_begin_src =
98 TRIG_TIMER) or 'external' (scan_begin_src == TRIG_EXT) at the start
99 of acquisition and the trigger source is at logic level 1 at the
100 time of the switch. This is very likely for TRIG_TIMER. For
101 TRIG_EXT, it depends on the state of the external line and whether
102 the CR_INVERT flag has been set. The remaining scans are triggered
106 #include <linux/interrupt.h>
108 #include "../comedidev.h"
110 #include "comedi_pci.h"
112 #include "comedi_fc.h"
115 #define DRIVER_NAME "amplc_pci224"
120 /* #define PCI_VENDOR_ID_AMPLICON 0x14dc */
121 #define PCI_DEVICE_ID_AMPLICON_PCI224 0x0007
122 #define PCI_DEVICE_ID_AMPLICON_PCI234 0x0008
123 #define PCI_DEVICE_ID_INVALID 0xffff
126 * PCI224/234 i/o space 1 (PCIBAR2) registers.
128 #define PCI224_IO1_SIZE 0x20 /* Size of i/o space 1 (8-bit registers) */
129 #define PCI224_Z2_CT0 0x14 /* 82C54 counter/timer 0 */
130 #define PCI224_Z2_CT1 0x15 /* 82C54 counter/timer 1 */
131 #define PCI224_Z2_CT2 0x16 /* 82C54 counter/timer 2 */
132 #define PCI224_Z2_CTC 0x17 /* 82C54 counter/timer control word */
133 #define PCI224_ZCLK_SCE 0x1A /* Group Z Clock Configuration Register */
134 #define PCI224_ZGAT_SCE 0x1D /* Group Z Gate Configuration Register */
135 #define PCI224_INT_SCE 0x1E /* ISR Interrupt source mask register */
136 /* /Interrupt status */
139 * PCI224/234 i/o space 2 (PCIBAR3) 16-bit registers.
141 #define PCI224_IO2_SIZE 0x10 /* Size of i/o space 2 (16-bit registers). */
142 #define PCI224_DACDATA 0x00 /* (w-o) DAC FIFO data. */
143 #define PCI224_SOFTTRIG 0x00 /* (r-o) DAC software scan trigger. */
144 #define PCI224_DACCON 0x02 /* (r/w) DAC status/configuration. */
145 #define PCI224_FIFOSIZ 0x04 /* (w-o) FIFO size for wraparound mode. */
146 #define PCI224_DACCEN 0x06 /* (w-o) DAC channel enable register. */
151 /* (r/w) Scan trigger. */
152 #define PCI224_DACCON_TRIG_MASK (7 << 0)
153 #define PCI224_DACCON_TRIG_NONE (0 << 0) /* none */
154 #define PCI224_DACCON_TRIG_SW (1 << 0) /* software trig */
155 #define PCI224_DACCON_TRIG_EXTP (2 << 0) /* ext +ve edge */
156 #define PCI224_DACCON_TRIG_EXTN (3 << 0) /* ext -ve edge */
157 #define PCI224_DACCON_TRIG_Z2CT0 (4 << 0) /* Z2 CT0 out */
158 #define PCI224_DACCON_TRIG_Z2CT1 (5 << 0) /* Z2 CT1 out */
159 #define PCI224_DACCON_TRIG_Z2CT2 (6 << 0) /* Z2 CT2 out */
160 /* (r/w) Polarity (PCI224 only, PCI234 always bipolar!). */
161 #define PCI224_DACCON_POLAR_MASK (1 << 3)
162 #define PCI224_DACCON_POLAR_UNI (0 << 3) /* range [0,Vref] */
163 #define PCI224_DACCON_POLAR_BI (1 << 3) /* range [-Vref,Vref] */
164 /* (r/w) Internal Vref (PCI224 only, when LK1 in position 1-2). */
165 #define PCI224_DACCON_VREF_MASK (3 << 4)
166 #define PCI224_DACCON_VREF_1_25 (0 << 4) /* Vref = 1.25V */
167 #define PCI224_DACCON_VREF_2_5 (1 << 4) /* Vref = 2.5V */
168 #define PCI224_DACCON_VREF_5 (2 << 4) /* Vref = 5V */
169 #define PCI224_DACCON_VREF_10 (3 << 4) /* Vref = 10V */
170 /* (r/w) Wraparound mode enable (to play back stored waveform). */
171 #define PCI224_DACCON_FIFOWRAP (1 << 7)
172 /* (r/w) FIFO enable. It MUST be set! */
173 #define PCI224_DACCON_FIFOENAB (1 << 8)
174 /* (r/w) FIFO interrupt trigger level (most values are not very useful). */
175 #define PCI224_DACCON_FIFOINTR_MASK (7 << 9)
176 #define PCI224_DACCON_FIFOINTR_EMPTY (0 << 9) /* when empty */
177 #define PCI224_DACCON_FIFOINTR_NEMPTY (1 << 9) /* when not empty */
178 #define PCI224_DACCON_FIFOINTR_NHALF (2 << 9) /* when not half full */
179 #define PCI224_DACCON_FIFOINTR_HALF (3 << 9) /* when half full */
180 #define PCI224_DACCON_FIFOINTR_NFULL (4 << 9) /* when not full */
181 #define PCI224_DACCON_FIFOINTR_FULL (5 << 9) /* when full */
182 /* (r-o) FIFO fill level. */
183 #define PCI224_DACCON_FIFOFL_MASK (7 << 12)
184 #define PCI224_DACCON_FIFOFL_EMPTY (1 << 12) /* 0 */
185 #define PCI224_DACCON_FIFOFL_ONETOHALF (0 << 12) /* [1,2048] */
186 #define PCI224_DACCON_FIFOFL_HALFTOFULL (4 << 12) /* [2049,4095] */
187 #define PCI224_DACCON_FIFOFL_FULL (6 << 12) /* 4096 */
188 /* (r-o) DAC busy flag. */
189 #define PCI224_DACCON_BUSY (1 << 15)
190 /* (w-o) FIFO reset. */
191 #define PCI224_DACCON_FIFORESET (1 << 12)
192 /* (w-o) Global reset (not sure what it does). */
193 #define PCI224_DACCON_GLOBALRESET (1 << 13)
198 #define PCI224_FIFO_SIZE 4096
201 * DAC FIFO guaranteed minimum room available, depending on reported fill level.
202 * The maximum room available depends on the reported fill level and how much
205 #define PCI224_FIFO_ROOM_EMPTY PCI224_FIFO_SIZE
206 #define PCI224_FIFO_ROOM_ONETOHALF (PCI224_FIFO_SIZE / 2)
207 #define PCI224_FIFO_ROOM_HALFTOFULL 1
208 #define PCI224_FIFO_ROOM_FULL 0
211 * Counter/timer clock input configuration sources.
213 #define CLK_CLK 0 /* reserved (channel-specific clock) */
214 #define CLK_10MHZ 1 /* internal 10 MHz clock */
215 #define CLK_1MHZ 2 /* internal 1 MHz clock */
216 #define CLK_100KHZ 3 /* internal 100 kHz clock */
217 #define CLK_10KHZ 4 /* internal 10 kHz clock */
218 #define CLK_1KHZ 5 /* internal 1 kHz clock */
219 #define CLK_OUTNM1 6 /* output of channel-1 modulo total */
220 #define CLK_EXT 7 /* external clock */
221 /* Macro to construct clock input configuration register value. */
222 #define CLK_CONFIG(chan, src) ((((chan) & 3) << 3) | ((src) & 7))
223 /* Timebases in ns. */
224 #define TIMEBASE_10MHZ 100
225 #define TIMEBASE_1MHZ 1000
226 #define TIMEBASE_100KHZ 10000
227 #define TIMEBASE_10KHZ 100000
228 #define TIMEBASE_1KHZ 1000000
231 * Counter/timer gate input configuration sources.
233 #define GAT_VCC 0 /* VCC (i.e. enabled) */
234 #define GAT_GND 1 /* GND (i.e. disabled) */
235 #define GAT_EXT 2 /* reserved (external gate input) */
236 #define GAT_NOUTNM2 3 /* inverted output of channel-2 modulo total */
237 /* Macro to construct gate input configuration register value. */
238 #define GAT_CONFIG(chan, src) ((((chan) & 3) << 3) | ((src) & 7))
241 * Summary of CLK_OUTNM1 and GAT_NOUTNM2 connections for PCI224 and PCI234:
243 * Channel's Channel's
244 * clock input gate input
245 * Channel CLK_OUTNM1 GAT_NOUTNM2
246 * ------- ---------- -----------
247 * Z2-CT0 Z2-CT2-OUT /Z2-CT1-OUT
248 * Z2-CT1 Z2-CT0-OUT /Z2-CT2-OUT
249 * Z2-CT2 Z2-CT1-OUT /Z2-CT0-OUT
253 * Interrupt enable/status bits
255 #define PCI224_INTR_EXT 0x01 /* rising edge on external input */
256 #define PCI224_INTR_DAC 0x04 /* DAC (FIFO) interrupt */
257 #define PCI224_INTR_Z2CT1 0x20 /* rising edge on Z2-CT1 output */
259 #define PCI224_INTR_EDGE_BITS (PCI224_INTR_EXT | PCI224_INTR_Z2CT1)
260 #define PCI224_INTR_LEVEL_BITS PCI224_INTR_DACFIFO
266 /* Combine old and new bits. */
267 #define COMBINE(old, new, mask) (((old) & ~(mask)) | ((new) & (mask)))
269 /* A generic null function pointer value. */
272 /* Current CPU. XXX should this be hard_smp_processor_id()? */
273 #define THISCPU smp_processor_id()
275 /* State bits for use with atomic bit operations. */
276 #define AO_CMD_STARTED 0
282 /* The software selectable internal ranges for PCI224 (option[2] == 0). */
283 static const struct comedi_lrange range_pci224_internal = {
297 static const unsigned short hwrange_pci224_internal[8] = {
298 PCI224_DACCON_POLAR_BI | PCI224_DACCON_VREF_10,
299 PCI224_DACCON_POLAR_BI | PCI224_DACCON_VREF_5,
300 PCI224_DACCON_POLAR_BI | PCI224_DACCON_VREF_2_5,
301 PCI224_DACCON_POLAR_BI | PCI224_DACCON_VREF_1_25,
302 PCI224_DACCON_POLAR_UNI | PCI224_DACCON_VREF_10,
303 PCI224_DACCON_POLAR_UNI | PCI224_DACCON_VREF_5,
304 PCI224_DACCON_POLAR_UNI | PCI224_DACCON_VREF_2_5,
305 PCI224_DACCON_POLAR_UNI | PCI224_DACCON_VREF_1_25,
308 /* The software selectable external ranges for PCI224 (option[2] == 1). */
309 static const struct comedi_lrange range_pci224_external = {
312 RANGE_ext(-1, 1), /* bipolar [-Vref,+Vref] */
313 RANGE_ext(0, 1), /* unipolar [0,+Vref] */
317 static const unsigned short hwrange_pci224_external[2] = {
318 PCI224_DACCON_POLAR_BI,
319 PCI224_DACCON_POLAR_UNI,
322 /* The hardware selectable Vref*2 external range for PCI234
323 * (option[2] == 1, option[3+n] == 0). */
324 static const struct comedi_lrange range_pci234_ext2 = {
331 /* The hardware selectable Vref external range for PCI234
332 * (option[2] == 1, option[3+n] == 1). */
333 static const struct comedi_lrange range_pci234_ext = {
340 /* This serves for all the PCI234 ranges. */
341 static const unsigned short hwrange_pci234[1] = {
342 PCI224_DACCON_POLAR_BI, /* bipolar - hardware ignores it! */
346 * Board descriptions.
349 enum pci224_model { any_model, pci224_model, pci234_model };
351 struct pci224_board {
353 unsigned short devid;
354 enum pci224_model model;
355 unsigned int ao_chans;
356 unsigned int ao_bits;
359 static const struct pci224_board pci224_boards[] = {
362 .devid = PCI_DEVICE_ID_AMPLICON_PCI224,
363 .model = pci224_model,
369 .devid = PCI_DEVICE_ID_AMPLICON_PCI234,
370 .model = pci234_model,
376 .devid = PCI_DEVICE_ID_INVALID,
377 .model = any_model, /* wildcard */
385 static DEFINE_PCI_DEVICE_TABLE(pci224_pci_table) = {
387 PCI_VENDOR_ID_AMPLICON, PCI_DEVICE_ID_AMPLICON_PCI224,
388 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, {
389 PCI_VENDOR_ID_AMPLICON, PCI_DEVICE_ID_AMPLICON_PCI234,
390 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, {
394 MODULE_DEVICE_TABLE(pci, pci224_pci_table);
397 * Useful for shorthand access to the particular board structure
399 #define thisboard ((struct pci224_board *)dev->board_ptr)
401 /* this structure is for data unique to this hardware driver. If
402 several hardware drivers keep similar information in this structure,
403 feel free to suggest moving the variable to the struct comedi_device struct. */
404 struct pci224_private {
405 struct pci_dev *pci_dev; /* PCI device */
406 const unsigned short *hwrange;
407 unsigned long iobase1;
409 spinlock_t ao_spinlock;
410 unsigned int *ao_readback;
412 unsigned char *ao_scan_order;
415 unsigned short daccon;
416 unsigned int cached_div1;
417 unsigned int cached_div2;
418 unsigned int ao_stop_count;
419 short ao_stop_continuous;
420 unsigned short ao_enab; /* max 16 channels so 'short' will do */
421 unsigned char intsce;
424 #define devpriv ((struct pci224_private *)dev->private)
427 * The struct comedi_driver structure tells the Comedi core module
428 * which functions to call to configure/deconfigure (attach/detach)
429 * the board, and also about the kernel module that contains
432 static int pci224_attach(struct comedi_device *dev,
433 struct comedi_devconfig *it);
434 static int pci224_detach(struct comedi_device *dev);
435 static struct comedi_driver driver_amplc_pci224 = {
436 .driver_name = DRIVER_NAME,
437 .module = THIS_MODULE,
438 .attach = pci224_attach,
439 .detach = pci224_detach,
440 .board_name = &pci224_boards[0].name,
441 .offset = sizeof(struct pci224_board),
442 .num_names = ARRAY_SIZE(pci224_boards),
445 COMEDI_PCI_INITCLEANUP(driver_amplc_pci224, pci224_pci_table);
448 * Called from the 'insn_write' function to perform a single write.
451 pci224_ao_set_data(struct comedi_device *dev, int chan, int range,
454 unsigned short mangled;
456 /* Store unmangled data for readback. */
457 devpriv->ao_readback[chan] = data;
458 /* Enable the channel. */
459 outw(1 << chan, dev->iobase + PCI224_DACCEN);
460 /* Set range and reset FIFO. */
461 devpriv->daccon = COMBINE(devpriv->daccon, devpriv->hwrange[range],
462 (PCI224_DACCON_POLAR_MASK |
463 PCI224_DACCON_VREF_MASK));
464 outw(devpriv->daccon | PCI224_DACCON_FIFORESET,
465 dev->iobase + PCI224_DACCON);
467 * Mangle the data. The hardware expects:
468 * - bipolar: 16-bit 2's complement
469 * - unipolar: 16-bit unsigned
471 mangled = (unsigned short)data << (16 - thisboard->ao_bits);
472 if ((devpriv->daccon & PCI224_DACCON_POLAR_MASK) ==
473 PCI224_DACCON_POLAR_BI) {
476 /* Write mangled data to the FIFO. */
477 outw(mangled, dev->iobase + PCI224_DACDATA);
478 /* Trigger the conversion. */
479 inw(dev->iobase + PCI224_SOFTTRIG);
483 * 'insn_write' function for AO subdevice.
486 pci224_ao_insn_write(struct comedi_device *dev, struct comedi_subdevice *s,
487 struct comedi_insn *insn, unsigned int *data)
492 /* Unpack channel and range. */
493 chan = CR_CHAN(insn->chanspec);
494 range = CR_RANGE(insn->chanspec);
496 /* Writing a list of values to an AO channel is probably not
497 * very useful, but that's how the interface is defined. */
498 for (i = 0; i < insn->n; i++) {
499 pci224_ao_set_data(dev, chan, range, data[i]);
505 * 'insn_read' function for AO subdevice.
507 * N.B. The value read will not be valid if the DAC channel has
508 * never been written successfully since the device was attached
509 * or since the channel has been used by an AO streaming write
513 pci224_ao_insn_read(struct comedi_device *dev, struct comedi_subdevice *s,
514 struct comedi_insn *insn, unsigned int *data)
519 chan = CR_CHAN(insn->chanspec);
521 for (i = 0; i < insn->n; i++) {
522 data[i] = devpriv->ao_readback[chan];
529 * Just a wrapper for the inline function 'i8253_cascade_ns_to_timer'.
532 pci224_cascade_ns_to_timer(int osc_base, unsigned int *d1, unsigned int *d2,
533 unsigned int *nanosec, int round_mode)
535 i8253_cascade_ns_to_timer(osc_base, d1, d2, nanosec, round_mode);
539 * Kills a command running on the AO subdevice.
541 static void pci224_ao_stop(struct comedi_device *dev,
542 struct comedi_subdevice *s)
546 if (!test_and_clear_bit(AO_CMD_STARTED, &devpriv->state)) {
550 spin_lock_irqsave(&devpriv->ao_spinlock, flags);
551 /* Kill the interrupts. */
553 outb(0, devpriv->iobase1 + PCI224_INT_SCE);
555 * Interrupt routine may or may not be running. We may or may not
556 * have been called from the interrupt routine (directly or
557 * indirectly via a comedi_events() callback routine). It's highly
558 * unlikely that we've been called from some other interrupt routine
559 * but who knows what strange things coders get up to!
561 * If the interrupt routine is currently running, wait for it to
562 * finish, unless we appear to have been called via the interrupt
565 while (devpriv->intr_running && devpriv->intr_cpuid != THISCPU) {
566 spin_unlock_irqrestore(&devpriv->ao_spinlock, flags);
567 spin_lock_irqsave(&devpriv->ao_spinlock, flags);
569 spin_unlock_irqrestore(&devpriv->ao_spinlock, flags);
570 /* Reconfigure DAC for insn_write usage. */
571 outw(0, dev->iobase + PCI224_DACCEN); /* Disable channels. */
572 devpriv->daccon = COMBINE(devpriv->daccon,
573 PCI224_DACCON_TRIG_SW |
574 PCI224_DACCON_FIFOINTR_EMPTY,
575 PCI224_DACCON_TRIG_MASK |
576 PCI224_DACCON_FIFOINTR_MASK);
577 outw(devpriv->daccon | PCI224_DACCON_FIFORESET,
578 dev->iobase + PCI224_DACCON);
582 * Handles start of acquisition for the AO subdevice.
584 static void pci224_ao_start(struct comedi_device *dev,
585 struct comedi_subdevice *s)
587 struct comedi_cmd *cmd = &s->async->cmd;
590 set_bit(AO_CMD_STARTED, &devpriv->state);
591 if (!devpriv->ao_stop_continuous && devpriv->ao_stop_count == 0) {
592 /* An empty acquisition! */
593 pci224_ao_stop(dev, s);
594 s->async->events |= COMEDI_CB_EOA;
595 comedi_event(dev, s);
597 /* Enable interrupts. */
598 spin_lock_irqsave(&devpriv->ao_spinlock, flags);
599 if (cmd->stop_src == TRIG_EXT) {
600 devpriv->intsce = PCI224_INTR_EXT | PCI224_INTR_DAC;
602 devpriv->intsce = PCI224_INTR_DAC;
604 outb(devpriv->intsce, devpriv->iobase1 + PCI224_INT_SCE);
605 spin_unlock_irqrestore(&devpriv->ao_spinlock, flags);
610 * Handles interrupts from the DAC FIFO.
612 static void pci224_ao_handle_fifo(struct comedi_device *dev,
613 struct comedi_subdevice *s)
615 struct comedi_cmd *cmd = &s->async->cmd;
616 unsigned int num_scans;
618 unsigned short dacstat;
620 unsigned int bytes_per_scan;
622 if (cmd->chanlist_len) {
623 bytes_per_scan = cmd->chanlist_len * sizeof(short);
625 /* Shouldn't get here! */
626 bytes_per_scan = sizeof(short);
628 /* Determine number of scans available in buffer. */
629 num_scans = comedi_buf_read_n_available(s->async) / bytes_per_scan;
630 if (!devpriv->ao_stop_continuous) {
631 /* Fixed number of scans. */
632 if (num_scans > devpriv->ao_stop_count) {
633 num_scans = devpriv->ao_stop_count;
637 /* Determine how much room is in the FIFO (in samples). */
638 dacstat = inw(dev->iobase + PCI224_DACCON);
639 switch (dacstat & PCI224_DACCON_FIFOFL_MASK) {
640 case PCI224_DACCON_FIFOFL_EMPTY:
641 room = PCI224_FIFO_ROOM_EMPTY;
642 if (!devpriv->ao_stop_continuous && devpriv->ao_stop_count == 0) {
643 /* FIFO empty at end of counted acquisition. */
644 pci224_ao_stop(dev, s);
645 s->async->events |= COMEDI_CB_EOA;
646 comedi_event(dev, s);
650 case PCI224_DACCON_FIFOFL_ONETOHALF:
651 room = PCI224_FIFO_ROOM_ONETOHALF;
653 case PCI224_DACCON_FIFOFL_HALFTOFULL:
654 room = PCI224_FIFO_ROOM_HALFTOFULL;
657 room = PCI224_FIFO_ROOM_FULL;
660 if (room >= PCI224_FIFO_ROOM_ONETOHALF) {
661 /* FIFO is less than half-full. */
662 if (num_scans == 0) {
663 /* Nothing left to put in the FIFO. */
664 pci224_ao_stop(dev, s);
665 s->async->events |= COMEDI_CB_OVERFLOW;
666 printk(KERN_ERR "comedi%d: "
667 "AO buffer underrun\n", dev->minor);
670 /* Determine how many new scans can be put in the FIFO. */
671 if (cmd->chanlist_len) {
672 room /= cmd->chanlist_len;
674 /* Determine how many scans to process. */
675 if (num_scans > room) {
679 for (n = 0; n < num_scans; n++) {
680 cfc_read_array_from_buffer(s, &devpriv->ao_scan_vals[0],
682 for (i = 0; i < cmd->chanlist_len; i++) {
683 outw(devpriv->ao_scan_vals[devpriv->ao_scan_order[i]],
684 dev->iobase + PCI224_DACDATA);
687 if (!devpriv->ao_stop_continuous) {
688 devpriv->ao_stop_count -= num_scans;
689 if (devpriv->ao_stop_count == 0) {
691 * Change FIFO interrupt trigger level to wait
692 * until FIFO is empty.
694 devpriv->daccon = COMBINE(devpriv->daccon,
695 PCI224_DACCON_FIFOINTR_EMPTY,
696 PCI224_DACCON_FIFOINTR_MASK);
697 outw(devpriv->daccon, dev->iobase + PCI224_DACCON);
700 if ((devpriv->daccon & PCI224_DACCON_TRIG_MASK) ==
701 PCI224_DACCON_TRIG_NONE) {
705 * This is the initial DAC FIFO interrupt at the
706 * start of the acquisition. The DAC's scan trigger
707 * has been set to 'none' up until now.
709 * Now that data has been written to the FIFO, the
710 * DAC's scan trigger source can be set to the
713 * BUG: The first scan will be triggered immediately
714 * if the scan trigger source is at logic level 1.
716 if (cmd->scan_begin_src == TRIG_TIMER) {
717 trig = PCI224_DACCON_TRIG_Z2CT0;
719 /* cmd->scan_begin_src == TRIG_EXT */
720 if (cmd->scan_begin_arg & CR_INVERT) {
721 trig = PCI224_DACCON_TRIG_EXTN;
723 trig = PCI224_DACCON_TRIG_EXTP;
726 devpriv->daccon = COMBINE(devpriv->daccon, trig,
727 PCI224_DACCON_TRIG_MASK);
728 outw(devpriv->daccon, dev->iobase + PCI224_DACCON);
730 if (s->async->events) {
731 comedi_event(dev, s);
736 * Internal trigger function to start acquisition on AO subdevice.
739 pci224_ao_inttrig_start(struct comedi_device *dev, struct comedi_subdevice *s,
740 unsigned int trignum)
745 s->async->inttrig = NULLFUNC;
746 pci224_ao_start(dev, s);
751 #define MAX_SCAN_PERIOD 0xFFFFFFFFU
752 #define MIN_SCAN_PERIOD 2500
753 #define CONVERT_PERIOD 625
756 * 'do_cmdtest' function for AO subdevice.
759 pci224_ao_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s,
760 struct comedi_cmd *cmd)
765 /* Step 1: make sure trigger sources are trivially valid. */
767 tmp = cmd->start_src;
768 cmd->start_src &= TRIG_INT | TRIG_EXT;
769 if (!cmd->start_src || tmp != cmd->start_src)
772 tmp = cmd->scan_begin_src;
773 cmd->scan_begin_src &= TRIG_EXT | TRIG_TIMER;
774 if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src)
777 tmp = cmd->convert_src;
778 cmd->convert_src &= TRIG_NOW;
779 if (!cmd->convert_src || tmp != cmd->convert_src)
782 tmp = cmd->scan_end_src;
783 cmd->scan_end_src &= TRIG_COUNT;
784 if (!cmd->scan_end_src || tmp != cmd->scan_end_src)
788 cmd->stop_src &= TRIG_COUNT | TRIG_EXT | TRIG_NONE;
789 if (!cmd->stop_src || tmp != cmd->stop_src)
795 /* Step 2: make sure trigger sources are unique and mutually
798 /* these tests are true if more than one _src bit is set */
799 if ((cmd->start_src & (cmd->start_src - 1)) != 0)
801 if ((cmd->scan_begin_src & (cmd->scan_begin_src - 1)) != 0)
803 if ((cmd->convert_src & (cmd->convert_src - 1)) != 0)
805 if ((cmd->scan_end_src & (cmd->scan_end_src - 1)) != 0)
807 if ((cmd->stop_src & (cmd->stop_src - 1)) != 0)
810 /* There's only one external trigger signal (which makes these
811 * tests easier). Only one thing can use it. */
813 if (cmd->start_src & TRIG_EXT)
815 if (cmd->scan_begin_src & TRIG_EXT)
817 if (cmd->stop_src & TRIG_EXT)
825 /* Step 3: make sure arguments are trivially compatible. */
827 switch (cmd->start_src) {
829 if (cmd->start_arg != 0) {
835 /* Force to external trigger 0. */
836 if ((cmd->start_arg & ~CR_FLAGS_MASK) != 0) {
837 cmd->start_arg = COMBINE(cmd->start_arg, 0,
841 /* The only flag allowed is CR_EDGE, which is ignored. */
842 if ((cmd->start_arg & CR_FLAGS_MASK & ~CR_EDGE) != 0) {
843 cmd->start_arg = COMBINE(cmd->start_arg, 0,
844 CR_FLAGS_MASK & ~CR_EDGE);
850 switch (cmd->scan_begin_src) {
852 if (cmd->scan_begin_arg > MAX_SCAN_PERIOD) {
853 cmd->scan_begin_arg = MAX_SCAN_PERIOD;
856 tmp = cmd->chanlist_len * CONVERT_PERIOD;
857 if (tmp < MIN_SCAN_PERIOD) {
858 tmp = MIN_SCAN_PERIOD;
860 if (cmd->scan_begin_arg < tmp) {
861 cmd->scan_begin_arg = tmp;
866 /* Force to external trigger 0. */
867 if ((cmd->scan_begin_arg & ~CR_FLAGS_MASK) != 0) {
868 cmd->scan_begin_arg = COMBINE(cmd->scan_begin_arg, 0,
872 /* Only allow flags CR_EDGE and CR_INVERT. Ignore CR_EDGE. */
873 if ((cmd->scan_begin_arg & CR_FLAGS_MASK &
874 ~(CR_EDGE | CR_INVERT)) != 0) {
875 cmd->scan_begin_arg = COMBINE(cmd->scan_begin_arg, 0,
876 CR_FLAGS_MASK & ~(CR_EDGE
884 /* cmd->convert_src == TRIG_NOW */
885 if (cmd->convert_arg != 0) {
886 cmd->convert_arg = 0;
890 /* cmd->scan_end_arg == TRIG_COUNT */
891 if (cmd->scan_end_arg != cmd->chanlist_len) {
892 cmd->scan_end_arg = cmd->chanlist_len;
896 switch (cmd->stop_src) {
898 /* Any count allowed. */
901 /* Force to external trigger 0. */
902 if ((cmd->stop_arg & ~CR_FLAGS_MASK) != 0) {
903 cmd->stop_arg = COMBINE(cmd->stop_arg, 0,
907 /* The only flag allowed is CR_EDGE, which is ignored. */
908 if ((cmd->stop_arg & CR_FLAGS_MASK & ~CR_EDGE) != 0) {
909 cmd->stop_arg = COMBINE(cmd->stop_arg, 0,
910 CR_FLAGS_MASK & ~CR_EDGE);
914 if (cmd->stop_arg != 0) {
924 /* Step 4: fix up any arguments. */
926 if (cmd->scan_begin_src == TRIG_TIMER) {
927 unsigned int div1, div2, round;
928 int round_mode = cmd->flags & TRIG_ROUND_MASK;
930 tmp = cmd->scan_begin_arg;
931 /* Check whether to use a single timer. */
932 switch (round_mode) {
933 case TRIG_ROUND_NEAREST:
935 round = TIMEBASE_10MHZ / 2;
937 case TRIG_ROUND_DOWN:
941 round = TIMEBASE_10MHZ - 1;
944 /* Be careful to avoid overflow! */
945 div2 = cmd->scan_begin_arg / TIMEBASE_10MHZ;
946 div2 += (round + cmd->scan_begin_arg % TIMEBASE_10MHZ) /
948 if (div2 <= 0x10000) {
949 /* A single timer will suffice. */
952 cmd->scan_begin_arg = div2 * TIMEBASE_10MHZ;
953 if (cmd->scan_begin_arg < div2 ||
954 cmd->scan_begin_arg < TIMEBASE_10MHZ) {
956 cmd->scan_begin_arg = MAX_SCAN_PERIOD;
959 /* Use two timers. */
960 div1 = devpriv->cached_div1;
961 div2 = devpriv->cached_div2;
962 pci224_cascade_ns_to_timer(TIMEBASE_10MHZ, &div1, &div2,
963 &cmd->scan_begin_arg,
965 devpriv->cached_div1 = div1;
966 devpriv->cached_div2 = div2;
968 if (tmp != cmd->scan_begin_arg) {
976 /* Step 5: check channel list. */
978 if (cmd->chanlist && (cmd->chanlist_len > 0)) {
980 enum { range_err = 1, dupchan_err = 2, };
986 * Check all channels have the same range index. Don't care
987 * about analogue reference, as we can't configure it.
989 * Check the list has no duplicate channels.
991 range = CR_RANGE(cmd->chanlist[0]);
994 for (n = 0; n < cmd->chanlist_len; n++) {
995 ch = CR_CHAN(cmd->chanlist[n]);
996 if (tmp & (1U << ch)) {
997 errors |= dupchan_err;
1000 if (CR_RANGE(cmd->chanlist[n]) != range) {
1001 errors |= range_err;
1005 if (errors & dupchan_err) {
1006 DPRINTK("comedi%d: " DRIVER_NAME
1008 "entries in chanlist must contain no "
1009 "duplicate channels\n", dev->minor);
1011 if (errors & range_err) {
1012 DPRINTK("comedi%d: " DRIVER_NAME
1014 "entries in chanlist must all have "
1015 "the same range index\n", dev->minor);
1028 * 'do_cmd' function for AO subdevice.
1030 static int pci224_ao_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
1032 struct comedi_cmd *cmd = &s->async->cmd;
1037 unsigned long flags;
1039 /* Cannot handle null/empty chanlist. */
1040 if (cmd->chanlist == NULL || cmd->chanlist_len == 0) {
1044 /* Determine which channels are enabled and their load order. */
1045 devpriv->ao_enab = 0;
1047 for (i = 0; i < cmd->chanlist_len; i++) {
1048 ch = CR_CHAN(cmd->chanlist[i]);
1049 devpriv->ao_enab |= 1U << ch;
1051 for (j = 0; j < cmd->chanlist_len; j++) {
1052 if (CR_CHAN(cmd->chanlist[j]) < ch) {
1056 devpriv->ao_scan_order[rank] = i;
1059 /* Set enabled channels. */
1060 outw(devpriv->ao_enab, dev->iobase + PCI224_DACCEN);
1062 /* Determine range and polarity. All channels the same. */
1063 range = CR_RANGE(cmd->chanlist[0]);
1066 * Set DAC range and polarity.
1067 * Set DAC scan trigger source to 'none'.
1068 * Set DAC FIFO interrupt trigger level to 'not half full'.
1071 * N.B. DAC FIFO interrupts are currently disabled.
1073 devpriv->daccon = COMBINE(devpriv->daccon,
1075 hwrange[range] | PCI224_DACCON_TRIG_NONE |
1076 PCI224_DACCON_FIFOINTR_NHALF),
1077 (PCI224_DACCON_POLAR_MASK |
1078 PCI224_DACCON_VREF_MASK |
1079 PCI224_DACCON_TRIG_MASK |
1080 PCI224_DACCON_FIFOINTR_MASK));
1081 outw(devpriv->daccon | PCI224_DACCON_FIFORESET,
1082 dev->iobase + PCI224_DACCON);
1084 if (cmd->scan_begin_src == TRIG_TIMER) {
1085 unsigned int div1, div2, round;
1086 unsigned int ns = cmd->scan_begin_arg;
1087 int round_mode = cmd->flags & TRIG_ROUND_MASK;
1089 /* Check whether to use a single timer. */
1090 switch (round_mode) {
1091 case TRIG_ROUND_NEAREST:
1093 round = TIMEBASE_10MHZ / 2;
1095 case TRIG_ROUND_DOWN:
1099 round = TIMEBASE_10MHZ - 1;
1102 /* Be careful to avoid overflow! */
1103 div2 = cmd->scan_begin_arg / TIMEBASE_10MHZ;
1104 div2 += (round + cmd->scan_begin_arg % TIMEBASE_10MHZ) /
1106 if (div2 <= 0x10000) {
1107 /* A single timer will suffice. */
1111 div1 = 1; /* Flag that single timer to be used. */
1113 /* Use two timers. */
1114 div1 = devpriv->cached_div1;
1115 div2 = devpriv->cached_div2;
1116 pci224_cascade_ns_to_timer(TIMEBASE_10MHZ, &div1, &div2,
1121 * The output of timer Z2-0 will be used as the scan trigger
1124 /* Make sure Z2-0 is gated on. */
1125 outb(GAT_CONFIG(0, GAT_VCC),
1126 devpriv->iobase1 + PCI224_ZGAT_SCE);
1128 /* Not cascading. Z2-0 needs 10 MHz clock. */
1129 outb(CLK_CONFIG(0, CLK_10MHZ),
1130 devpriv->iobase1 + PCI224_ZCLK_SCE);
1132 /* Cascading with Z2-2. */
1133 /* Make sure Z2-2 is gated on. */
1134 outb(GAT_CONFIG(2, GAT_VCC),
1135 devpriv->iobase1 + PCI224_ZGAT_SCE);
1136 /* Z2-2 needs 10 MHz clock. */
1137 outb(CLK_CONFIG(2, CLK_10MHZ),
1138 devpriv->iobase1 + PCI224_ZCLK_SCE);
1139 /* Load Z2-2 mode (2) and counter (div1). */
1140 i8254_load(devpriv->iobase1 + PCI224_Z2_CT0, 0,
1142 /* Z2-0 is clocked from Z2-2's output. */
1143 outb(CLK_CONFIG(0, CLK_OUTNM1),
1144 devpriv->iobase1 + PCI224_ZCLK_SCE);
1146 /* Load Z2-0 mode (2) and counter (div2). */
1147 i8254_load(devpriv->iobase1 + PCI224_Z2_CT0, 0, 0, div2, 2);
1151 * Sort out end of acquisition.
1153 switch (cmd->stop_src) {
1155 /* Fixed number of scans. */
1156 devpriv->ao_stop_continuous = 0;
1157 devpriv->ao_stop_count = cmd->stop_arg;
1160 /* Continuous scans. */
1161 devpriv->ao_stop_continuous = 1;
1162 devpriv->ao_stop_count = 0;
1167 * Sort out start of acquisition.
1169 switch (cmd->start_src) {
1171 spin_lock_irqsave(&devpriv->ao_spinlock, flags);
1172 s->async->inttrig = &pci224_ao_inttrig_start;
1173 spin_unlock_irqrestore(&devpriv->ao_spinlock, flags);
1176 /* Enable external interrupt trigger to start acquisition. */
1177 spin_lock_irqsave(&devpriv->ao_spinlock, flags);
1178 devpriv->intsce |= PCI224_INTR_EXT;
1179 outb(devpriv->intsce, devpriv->iobase1 + PCI224_INT_SCE);
1180 spin_unlock_irqrestore(&devpriv->ao_spinlock, flags);
1188 * 'cancel' function for AO subdevice.
1190 static int pci224_ao_cancel(struct comedi_device *dev,
1191 struct comedi_subdevice *s)
1193 pci224_ao_stop(dev, s);
1198 * 'munge' data for AO command.
1201 pci224_ao_munge(struct comedi_device *dev, struct comedi_subdevice *s,
1202 void *data, unsigned int num_bytes, unsigned int chan_index)
1204 struct comedi_async *async = s->async;
1205 short *array = data;
1206 unsigned int length = num_bytes / sizeof(*array);
1207 unsigned int offset;
1211 /* The hardware expects 16-bit numbers. */
1212 shift = 16 - thisboard->ao_bits;
1213 /* Channels will be all bipolar or all unipolar. */
1214 if ((devpriv->hwrange[CR_RANGE(async->cmd.chanlist[0])] &
1215 PCI224_DACCON_POLAR_MASK) == PCI224_DACCON_POLAR_UNI) {
1222 /* Munge the data. */
1223 for (i = 0; i < length; i++) {
1224 array[i] = (array[i] << shift) - offset;
1229 * Interrupt handler.
1231 static irqreturn_t pci224_interrupt(int irq, void *d)
1233 struct comedi_device *dev = d;
1234 struct comedi_subdevice *s = &dev->subdevices[0];
1235 struct comedi_cmd *cmd;
1236 unsigned char intstat, valid_intstat;
1237 unsigned char curenab;
1239 unsigned long flags;
1241 intstat = inb(devpriv->iobase1 + PCI224_INT_SCE) & 0x3F;
1244 spin_lock_irqsave(&devpriv->ao_spinlock, flags);
1245 valid_intstat = devpriv->intsce & intstat;
1246 /* Temporarily disable interrupt sources. */
1247 curenab = devpriv->intsce & ~intstat;
1248 outb(curenab, devpriv->iobase1 + PCI224_INT_SCE);
1249 devpriv->intr_running = 1;
1250 devpriv->intr_cpuid = THISCPU;
1251 spin_unlock_irqrestore(&devpriv->ao_spinlock, flags);
1252 if (valid_intstat != 0) {
1253 cmd = &s->async->cmd;
1254 if (valid_intstat & PCI224_INTR_EXT) {
1255 devpriv->intsce &= ~PCI224_INTR_EXT;
1256 if (cmd->start_src == TRIG_EXT) {
1257 pci224_ao_start(dev, s);
1258 } else if (cmd->stop_src == TRIG_EXT) {
1259 pci224_ao_stop(dev, s);
1262 if (valid_intstat & PCI224_INTR_DAC) {
1263 pci224_ao_handle_fifo(dev, s);
1266 /* Reenable interrupt sources. */
1267 spin_lock_irqsave(&devpriv->ao_spinlock, flags);
1268 if (curenab != devpriv->intsce) {
1269 outb(devpriv->intsce,
1270 devpriv->iobase1 + PCI224_INT_SCE);
1272 devpriv->intr_running = 0;
1273 spin_unlock_irqrestore(&devpriv->ao_spinlock, flags);
1275 return IRQ_RETVAL(retval);
1279 * This function looks for a PCI device matching the requested board name,
1283 pci224_find_pci(struct comedi_device *dev, int bus, int slot,
1284 struct pci_dev **pci_dev_p)
1286 struct pci_dev *pci_dev = NULL;
1290 /* Look for matching PCI device. */
1291 for (pci_dev = pci_get_device(PCI_VENDOR_ID_AMPLICON, PCI_ANY_ID, NULL);
1293 pci_dev = pci_get_device(PCI_VENDOR_ID_AMPLICON, PCI_ANY_ID,
1295 /* If bus/slot specified, check them. */
1297 if (bus != pci_dev->bus->number
1298 || slot != PCI_SLOT(pci_dev->devfn))
1301 if (thisboard->model == any_model) {
1302 /* Match any supported model. */
1305 for (i = 0; i < ARRAY_SIZE(pci224_boards); i++) {
1306 if (pci_dev->device == pci224_boards[i].devid) {
1307 /* Change board_ptr to matched board. */
1308 dev->board_ptr = &pci224_boards[i];
1312 if (i == ARRAY_SIZE(pci224_boards))
1315 /* Match specific model name. */
1316 if (thisboard->devid != pci_dev->device)
1320 /* Found a match. */
1321 *pci_dev_p = pci_dev;
1324 /* No match found. */
1326 printk(KERN_ERR "comedi%d: error! "
1327 "no %s found at pci %02x:%02x!\n",
1328 dev->minor, thisboard->name, bus, slot);
1330 printk(KERN_ERR "comedi%d: error! no %s found!\n",
1331 dev->minor, thisboard->name);
1337 * Attach is called by the Comedi core to configure the driver
1338 * for a particular board. If you specified a board_name array
1339 * in the driver structure, dev->board_ptr contains that
1342 static int pci224_attach(struct comedi_device *dev, struct comedi_devconfig *it)
1344 struct comedi_subdevice *s;
1345 struct pci_dev *pci_dev;
1347 int bus = 0, slot = 0;
1351 printk(KERN_DEBUG "comedi%d: %s: attach\n", dev->minor, DRIVER_NAME);
1353 bus = it->options[0];
1354 slot = it->options[1];
1355 ret = alloc_private(dev, sizeof(struct pci224_private));
1357 printk(KERN_ERR "comedi%d: error! out of memory!\n",
1362 ret = pci224_find_pci(dev, bus, slot, &pci_dev);
1366 devpriv->pci_dev = pci_dev;
1367 ret = comedi_pci_enable(pci_dev, DRIVER_NAME);
1370 "comedi%d: error! cannot enable PCI device "
1371 "and request regions!\n", dev->minor);
1374 spin_lock_init(&devpriv->ao_spinlock);
1376 devpriv->iobase1 = pci_resource_start(pci_dev, 2);
1377 dev->iobase = pci_resource_start(pci_dev, 3);
1380 /* Allocate readback buffer for AO channels. */
1381 devpriv->ao_readback = kmalloc(sizeof(devpriv->ao_readback[0]) *
1382 thisboard->ao_chans, GFP_KERNEL);
1383 if (!devpriv->ao_readback) {
1387 /* Allocate buffer to hold values for AO channel scan. */
1388 devpriv->ao_scan_vals = kmalloc(sizeof(devpriv->ao_scan_vals[0]) *
1389 thisboard->ao_chans, GFP_KERNEL);
1390 if (!devpriv->ao_scan_vals) {
1394 /* Allocate buffer to hold AO channel scan order. */
1395 devpriv->ao_scan_order = kmalloc(sizeof(devpriv->ao_scan_order[0]) *
1396 thisboard->ao_chans, GFP_KERNEL);
1397 if (!devpriv->ao_scan_order) {
1401 /* Disable interrupt sources. */
1402 devpriv->intsce = 0;
1403 outb(0, devpriv->iobase1 + PCI224_INT_SCE);
1405 /* Initialize the DAC hardware. */
1406 outw(PCI224_DACCON_GLOBALRESET, dev->iobase + PCI224_DACCON);
1407 outw(0, dev->iobase + PCI224_DACCEN);
1408 outw(0, dev->iobase + PCI224_FIFOSIZ);
1409 devpriv->daccon = (PCI224_DACCON_TRIG_SW | PCI224_DACCON_POLAR_BI |
1410 PCI224_DACCON_FIFOENAB |
1411 PCI224_DACCON_FIFOINTR_EMPTY);
1412 outw(devpriv->daccon | PCI224_DACCON_FIFORESET,
1413 dev->iobase + PCI224_DACCON);
1415 /* Allocate subdevices. There is only one! */
1416 ret = alloc_subdevices(dev, 1);
1418 printk(KERN_ERR "comedi%d: error! out of memory!\n",
1423 s = dev->subdevices + 0;
1424 /* Analog output subdevice. */
1425 s->type = COMEDI_SUBD_AO;
1426 s->subdev_flags = SDF_WRITABLE | SDF_GROUND | SDF_CMD_WRITE;
1427 s->n_chan = thisboard->ao_chans;
1428 s->maxdata = (1 << thisboard->ao_bits) - 1;
1429 s->insn_write = &pci224_ao_insn_write;
1430 s->insn_read = &pci224_ao_insn_read;
1431 s->len_chanlist = s->n_chan;
1433 dev->write_subdev = s;
1434 s->do_cmd = &pci224_ao_cmd;
1435 s->do_cmdtest = &pci224_ao_cmdtest;
1436 s->cancel = &pci224_ao_cancel;
1437 s->munge = &pci224_ao_munge;
1439 /* Sort out channel range options. */
1440 if (thisboard->model == pci234_model) {
1441 /* PCI234 range options. */
1442 const struct comedi_lrange **range_table_list;
1444 s->range_table_list = range_table_list =
1445 kmalloc(sizeof(struct comedi_lrange *) * s->n_chan,
1447 if (!s->range_table_list) {
1450 for (n = 2; n < 3 + s->n_chan; n++) {
1451 if (it->options[n] < 0 || it->options[n] > 1) {
1452 printk(KERN_WARNING "comedi%d: %s: warning! "
1453 "bad options[%u]=%d\n",
1454 dev->minor, DRIVER_NAME, n,
1458 for (n = 0; n < s->n_chan; n++) {
1459 if (n < COMEDI_NDEVCONFOPTS - 3 &&
1460 it->options[3 + n] == 1) {
1461 if (it->options[2] == 1) {
1462 range_table_list[n] = &range_pci234_ext;
1464 range_table_list[n] = &range_bipolar5;
1467 if (it->options[2] == 1) {
1468 range_table_list[n] =
1471 range_table_list[n] = &range_bipolar10;
1475 devpriv->hwrange = hwrange_pci234;
1477 /* PCI224 range options. */
1478 if (it->options[2] == 1) {
1479 s->range_table = &range_pci224_external;
1480 devpriv->hwrange = hwrange_pci224_external;
1482 if (it->options[2] != 0) {
1483 printk(KERN_WARNING "comedi%d: %s: warning! "
1484 "bad options[2]=%d\n",
1485 dev->minor, DRIVER_NAME, it->options[2]);
1487 s->range_table = &range_pci224_internal;
1488 devpriv->hwrange = hwrange_pci224_internal;
1492 dev->board_name = thisboard->name;
1495 ret = request_irq(irq, pci224_interrupt, IRQF_SHARED,
1498 printk(KERN_ERR "comedi%d: error! "
1499 "unable to allocate irq %u\n", dev->minor, irq);
1506 printk(KERN_INFO "comedi%d: %s ", dev->minor, dev->board_name);
1507 printk("(pci %s) ", pci_name(pci_dev));
1509 printk("(irq %u%s) ", irq, (dev->irq ? "" : " UNAVAILABLE"));
1511 printk("(no irq) ");
1514 printk("attached\n");
1520 * _detach is called to deconfigure a device. It should deallocate
1522 * This function is also called when _attach() fails, so it should be
1523 * careful not to release resources that were not necessarily
1524 * allocated by _attach(). dev->private and dev->subdevices are
1525 * deallocated automatically by the core.
1527 static int pci224_detach(struct comedi_device *dev)
1529 printk(KERN_DEBUG "comedi%d: %s: detach\n", dev->minor, DRIVER_NAME);
1532 free_irq(dev->irq, dev);
1534 if (dev->subdevices) {
1535 struct comedi_subdevice *s;
1537 s = dev->subdevices + 0;
1539 kfree(s->range_table_list);
1542 kfree(devpriv->ao_readback);
1543 kfree(devpriv->ao_scan_vals);
1544 kfree(devpriv->ao_scan_order);
1545 if (devpriv->pci_dev) {
1547 comedi_pci_disable(devpriv->pci_dev);
1549 pci_dev_put(devpriv->pci_dev);
1552 if (dev->board_name) {
1553 printk(KERN_INFO "comedi%d: %s removed\n",
1554 dev->minor, dev->board_name);