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>
107 #include <linux/slab.h>
109 #include "../comedidev.h"
111 #include "comedi_pci.h"
113 #include "comedi_fc.h"
116 #define DRIVER_NAME "amplc_pci224"
121 /* #define PCI_VENDOR_ID_AMPLICON 0x14dc */
122 #define PCI_DEVICE_ID_AMPLICON_PCI224 0x0007
123 #define PCI_DEVICE_ID_AMPLICON_PCI234 0x0008
124 #define PCI_DEVICE_ID_INVALID 0xffff
127 * PCI224/234 i/o space 1 (PCIBAR2) registers.
129 #define PCI224_IO1_SIZE 0x20 /* Size of i/o space 1 (8-bit registers) */
130 #define PCI224_Z2_CT0 0x14 /* 82C54 counter/timer 0 */
131 #define PCI224_Z2_CT1 0x15 /* 82C54 counter/timer 1 */
132 #define PCI224_Z2_CT2 0x16 /* 82C54 counter/timer 2 */
133 #define PCI224_Z2_CTC 0x17 /* 82C54 counter/timer control word */
134 #define PCI224_ZCLK_SCE 0x1A /* Group Z Clock Configuration Register */
135 #define PCI224_ZGAT_SCE 0x1D /* Group Z Gate Configuration Register */
136 #define PCI224_INT_SCE 0x1E /* ISR Interrupt source mask register */
137 /* /Interrupt status */
140 * PCI224/234 i/o space 2 (PCIBAR3) 16-bit registers.
142 #define PCI224_IO2_SIZE 0x10 /* Size of i/o space 2 (16-bit registers). */
143 #define PCI224_DACDATA 0x00 /* (w-o) DAC FIFO data. */
144 #define PCI224_SOFTTRIG 0x00 /* (r-o) DAC software scan trigger. */
145 #define PCI224_DACCON 0x02 /* (r/w) DAC status/configuration. */
146 #define PCI224_FIFOSIZ 0x04 /* (w-o) FIFO size for wraparound mode. */
147 #define PCI224_DACCEN 0x06 /* (w-o) DAC channel enable register. */
152 /* (r/w) Scan trigger. */
153 #define PCI224_DACCON_TRIG_MASK (7 << 0)
154 #define PCI224_DACCON_TRIG_NONE (0 << 0) /* none */
155 #define PCI224_DACCON_TRIG_SW (1 << 0) /* software trig */
156 #define PCI224_DACCON_TRIG_EXTP (2 << 0) /* ext +ve edge */
157 #define PCI224_DACCON_TRIG_EXTN (3 << 0) /* ext -ve edge */
158 #define PCI224_DACCON_TRIG_Z2CT0 (4 << 0) /* Z2 CT0 out */
159 #define PCI224_DACCON_TRIG_Z2CT1 (5 << 0) /* Z2 CT1 out */
160 #define PCI224_DACCON_TRIG_Z2CT2 (6 << 0) /* Z2 CT2 out */
161 /* (r/w) Polarity (PCI224 only, PCI234 always bipolar!). */
162 #define PCI224_DACCON_POLAR_MASK (1 << 3)
163 #define PCI224_DACCON_POLAR_UNI (0 << 3) /* range [0,Vref] */
164 #define PCI224_DACCON_POLAR_BI (1 << 3) /* range [-Vref,Vref] */
165 /* (r/w) Internal Vref (PCI224 only, when LK1 in position 1-2). */
166 #define PCI224_DACCON_VREF_MASK (3 << 4)
167 #define PCI224_DACCON_VREF_1_25 (0 << 4) /* Vref = 1.25V */
168 #define PCI224_DACCON_VREF_2_5 (1 << 4) /* Vref = 2.5V */
169 #define PCI224_DACCON_VREF_5 (2 << 4) /* Vref = 5V */
170 #define PCI224_DACCON_VREF_10 (3 << 4) /* Vref = 10V */
171 /* (r/w) Wraparound mode enable (to play back stored waveform). */
172 #define PCI224_DACCON_FIFOWRAP (1 << 7)
173 /* (r/w) FIFO enable. It MUST be set! */
174 #define PCI224_DACCON_FIFOENAB (1 << 8)
175 /* (r/w) FIFO interrupt trigger level (most values are not very useful). */
176 #define PCI224_DACCON_FIFOINTR_MASK (7 << 9)
177 #define PCI224_DACCON_FIFOINTR_EMPTY (0 << 9) /* when empty */
178 #define PCI224_DACCON_FIFOINTR_NEMPTY (1 << 9) /* when not empty */
179 #define PCI224_DACCON_FIFOINTR_NHALF (2 << 9) /* when not half full */
180 #define PCI224_DACCON_FIFOINTR_HALF (3 << 9) /* when half full */
181 #define PCI224_DACCON_FIFOINTR_NFULL (4 << 9) /* when not full */
182 #define PCI224_DACCON_FIFOINTR_FULL (5 << 9) /* when full */
183 /* (r-o) FIFO fill level. */
184 #define PCI224_DACCON_FIFOFL_MASK (7 << 12)
185 #define PCI224_DACCON_FIFOFL_EMPTY (1 << 12) /* 0 */
186 #define PCI224_DACCON_FIFOFL_ONETOHALF (0 << 12) /* [1,2048] */
187 #define PCI224_DACCON_FIFOFL_HALFTOFULL (4 << 12) /* [2049,4095] */
188 #define PCI224_DACCON_FIFOFL_FULL (6 << 12) /* 4096 */
189 /* (r-o) DAC busy flag. */
190 #define PCI224_DACCON_BUSY (1 << 15)
191 /* (w-o) FIFO reset. */
192 #define PCI224_DACCON_FIFORESET (1 << 12)
193 /* (w-o) Global reset (not sure what it does). */
194 #define PCI224_DACCON_GLOBALRESET (1 << 13)
199 #define PCI224_FIFO_SIZE 4096
202 * DAC FIFO guaranteed minimum room available, depending on reported fill level.
203 * The maximum room available depends on the reported fill level and how much
206 #define PCI224_FIFO_ROOM_EMPTY PCI224_FIFO_SIZE
207 #define PCI224_FIFO_ROOM_ONETOHALF (PCI224_FIFO_SIZE / 2)
208 #define PCI224_FIFO_ROOM_HALFTOFULL 1
209 #define PCI224_FIFO_ROOM_FULL 0
212 * Counter/timer clock input configuration sources.
214 #define CLK_CLK 0 /* reserved (channel-specific clock) */
215 #define CLK_10MHZ 1 /* internal 10 MHz clock */
216 #define CLK_1MHZ 2 /* internal 1 MHz clock */
217 #define CLK_100KHZ 3 /* internal 100 kHz clock */
218 #define CLK_10KHZ 4 /* internal 10 kHz clock */
219 #define CLK_1KHZ 5 /* internal 1 kHz clock */
220 #define CLK_OUTNM1 6 /* output of channel-1 modulo total */
221 #define CLK_EXT 7 /* external clock */
222 /* Macro to construct clock input configuration register value. */
223 #define CLK_CONFIG(chan, src) ((((chan) & 3) << 3) | ((src) & 7))
224 /* Timebases in ns. */
225 #define TIMEBASE_10MHZ 100
226 #define TIMEBASE_1MHZ 1000
227 #define TIMEBASE_100KHZ 10000
228 #define TIMEBASE_10KHZ 100000
229 #define TIMEBASE_1KHZ 1000000
232 * Counter/timer gate input configuration sources.
234 #define GAT_VCC 0 /* VCC (i.e. enabled) */
235 #define GAT_GND 1 /* GND (i.e. disabled) */
236 #define GAT_EXT 2 /* reserved (external gate input) */
237 #define GAT_NOUTNM2 3 /* inverted output of channel-2 modulo total */
238 /* Macro to construct gate input configuration register value. */
239 #define GAT_CONFIG(chan, src) ((((chan) & 3) << 3) | ((src) & 7))
242 * Summary of CLK_OUTNM1 and GAT_NOUTNM2 connections for PCI224 and PCI234:
244 * Channel's Channel's
245 * clock input gate input
246 * Channel CLK_OUTNM1 GAT_NOUTNM2
247 * ------- ---------- -----------
248 * Z2-CT0 Z2-CT2-OUT /Z2-CT1-OUT
249 * Z2-CT1 Z2-CT0-OUT /Z2-CT2-OUT
250 * Z2-CT2 Z2-CT1-OUT /Z2-CT0-OUT
254 * Interrupt enable/status bits
256 #define PCI224_INTR_EXT 0x01 /* rising edge on external input */
257 #define PCI224_INTR_DAC 0x04 /* DAC (FIFO) interrupt */
258 #define PCI224_INTR_Z2CT1 0x20 /* rising edge on Z2-CT1 output */
260 #define PCI224_INTR_EDGE_BITS (PCI224_INTR_EXT | PCI224_INTR_Z2CT1)
261 #define PCI224_INTR_LEVEL_BITS PCI224_INTR_DACFIFO
267 /* Combine old and new bits. */
268 #define COMBINE(old, new, mask) (((old) & ~(mask)) | ((new) & (mask)))
270 /* A generic null function pointer value. */
273 /* Current CPU. XXX should this be hard_smp_processor_id()? */
274 #define THISCPU smp_processor_id()
276 /* State bits for use with atomic bit operations. */
277 #define AO_CMD_STARTED 0
283 /* The software selectable internal ranges for PCI224 (option[2] == 0). */
284 static const struct comedi_lrange range_pci224_internal = {
298 static const unsigned short hwrange_pci224_internal[8] = {
299 PCI224_DACCON_POLAR_BI | PCI224_DACCON_VREF_10,
300 PCI224_DACCON_POLAR_BI | PCI224_DACCON_VREF_5,
301 PCI224_DACCON_POLAR_BI | PCI224_DACCON_VREF_2_5,
302 PCI224_DACCON_POLAR_BI | PCI224_DACCON_VREF_1_25,
303 PCI224_DACCON_POLAR_UNI | PCI224_DACCON_VREF_10,
304 PCI224_DACCON_POLAR_UNI | PCI224_DACCON_VREF_5,
305 PCI224_DACCON_POLAR_UNI | PCI224_DACCON_VREF_2_5,
306 PCI224_DACCON_POLAR_UNI | PCI224_DACCON_VREF_1_25,
309 /* The software selectable external ranges for PCI224 (option[2] == 1). */
310 static const struct comedi_lrange range_pci224_external = {
313 RANGE_ext(-1, 1), /* bipolar [-Vref,+Vref] */
314 RANGE_ext(0, 1), /* unipolar [0,+Vref] */
318 static const unsigned short hwrange_pci224_external[2] = {
319 PCI224_DACCON_POLAR_BI,
320 PCI224_DACCON_POLAR_UNI,
323 /* The hardware selectable Vref*2 external range for PCI234
324 * (option[2] == 1, option[3+n] == 0). */
325 static const struct comedi_lrange range_pci234_ext2 = {
332 /* The hardware selectable Vref external range for PCI234
333 * (option[2] == 1, option[3+n] == 1). */
334 static const struct comedi_lrange range_pci234_ext = {
341 /* This serves for all the PCI234 ranges. */
342 static const unsigned short hwrange_pci234[1] = {
343 PCI224_DACCON_POLAR_BI, /* bipolar - hardware ignores it! */
347 * Board descriptions.
350 enum pci224_model { any_model, pci224_model, pci234_model };
352 struct pci224_board {
354 unsigned short devid;
355 enum pci224_model model;
356 unsigned int ao_chans;
357 unsigned int ao_bits;
360 static const struct pci224_board pci224_boards[] = {
363 .devid = PCI_DEVICE_ID_AMPLICON_PCI224,
364 .model = pci224_model,
370 .devid = PCI_DEVICE_ID_AMPLICON_PCI234,
371 .model = pci234_model,
377 .devid = PCI_DEVICE_ID_INVALID,
378 .model = any_model, /* wildcard */
386 static DEFINE_PCI_DEVICE_TABLE(pci224_pci_table) = {
388 PCI_VENDOR_ID_AMPLICON, PCI_DEVICE_ID_AMPLICON_PCI224,
389 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, {
390 PCI_VENDOR_ID_AMPLICON, PCI_DEVICE_ID_AMPLICON_PCI234,
391 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, {
395 MODULE_DEVICE_TABLE(pci, pci224_pci_table);
398 * Useful for shorthand access to the particular board structure
400 #define thisboard ((struct pci224_board *)dev->board_ptr)
402 /* this structure is for data unique to this hardware driver. If
403 several hardware drivers keep similar information in this structure,
404 feel free to suggest moving the variable to the struct comedi_device struct. */
405 struct pci224_private {
406 struct pci_dev *pci_dev; /* PCI device */
407 const unsigned short *hwrange;
408 unsigned long iobase1;
410 spinlock_t ao_spinlock;
411 unsigned int *ao_readback;
413 unsigned char *ao_scan_order;
416 unsigned short daccon;
417 unsigned int cached_div1;
418 unsigned int cached_div2;
419 unsigned int ao_stop_count;
420 short ao_stop_continuous;
421 unsigned short ao_enab; /* max 16 channels so 'short' will do */
422 unsigned char intsce;
425 #define devpriv ((struct pci224_private *)dev->private)
428 * The struct comedi_driver structure tells the Comedi core module
429 * which functions to call to configure/deconfigure (attach/detach)
430 * the board, and also about the kernel module that contains
433 static int pci224_attach(struct comedi_device *dev,
434 struct comedi_devconfig *it);
435 static int pci224_detach(struct comedi_device *dev);
436 static struct comedi_driver driver_amplc_pci224 = {
437 .driver_name = DRIVER_NAME,
438 .module = THIS_MODULE,
439 .attach = pci224_attach,
440 .detach = pci224_detach,
441 .board_name = &pci224_boards[0].name,
442 .offset = sizeof(struct pci224_board),
443 .num_names = ARRAY_SIZE(pci224_boards),
446 COMEDI_PCI_INITCLEANUP(driver_amplc_pci224, pci224_pci_table);
449 * Called from the 'insn_write' function to perform a single write.
452 pci224_ao_set_data(struct comedi_device *dev, int chan, int range,
455 unsigned short mangled;
457 /* Store unmangled data for readback. */
458 devpriv->ao_readback[chan] = data;
459 /* Enable the channel. */
460 outw(1 << chan, dev->iobase + PCI224_DACCEN);
461 /* Set range and reset FIFO. */
462 devpriv->daccon = COMBINE(devpriv->daccon, devpriv->hwrange[range],
463 (PCI224_DACCON_POLAR_MASK |
464 PCI224_DACCON_VREF_MASK));
465 outw(devpriv->daccon | PCI224_DACCON_FIFORESET,
466 dev->iobase + PCI224_DACCON);
468 * Mangle the data. The hardware expects:
469 * - bipolar: 16-bit 2's complement
470 * - unipolar: 16-bit unsigned
472 mangled = (unsigned short)data << (16 - thisboard->ao_bits);
473 if ((devpriv->daccon & PCI224_DACCON_POLAR_MASK) ==
474 PCI224_DACCON_POLAR_BI) {
477 /* Write mangled data to the FIFO. */
478 outw(mangled, dev->iobase + PCI224_DACDATA);
479 /* Trigger the conversion. */
480 inw(dev->iobase + PCI224_SOFTTRIG);
484 * 'insn_write' function for AO subdevice.
487 pci224_ao_insn_write(struct comedi_device *dev, struct comedi_subdevice *s,
488 struct comedi_insn *insn, unsigned int *data)
493 /* Unpack channel and range. */
494 chan = CR_CHAN(insn->chanspec);
495 range = CR_RANGE(insn->chanspec);
497 /* Writing a list of values to an AO channel is probably not
498 * very useful, but that's how the interface is defined. */
499 for (i = 0; i < insn->n; i++) {
500 pci224_ao_set_data(dev, chan, range, data[i]);
506 * 'insn_read' function for AO subdevice.
508 * N.B. The value read will not be valid if the DAC channel has
509 * never been written successfully since the device was attached
510 * or since the channel has been used by an AO streaming write
514 pci224_ao_insn_read(struct comedi_device *dev, struct comedi_subdevice *s,
515 struct comedi_insn *insn, unsigned int *data)
520 chan = CR_CHAN(insn->chanspec);
522 for (i = 0; i < insn->n; i++) {
523 data[i] = devpriv->ao_readback[chan];
530 * Just a wrapper for the inline function 'i8253_cascade_ns_to_timer'.
533 pci224_cascade_ns_to_timer(int osc_base, unsigned int *d1, unsigned int *d2,
534 unsigned int *nanosec, int round_mode)
536 i8253_cascade_ns_to_timer(osc_base, d1, d2, nanosec, round_mode);
540 * Kills a command running on the AO subdevice.
542 static void pci224_ao_stop(struct comedi_device *dev,
543 struct comedi_subdevice *s)
547 if (!test_and_clear_bit(AO_CMD_STARTED, &devpriv->state)) {
551 spin_lock_irqsave(&devpriv->ao_spinlock, flags);
552 /* Kill the interrupts. */
554 outb(0, devpriv->iobase1 + PCI224_INT_SCE);
556 * Interrupt routine may or may not be running. We may or may not
557 * have been called from the interrupt routine (directly or
558 * indirectly via a comedi_events() callback routine). It's highly
559 * unlikely that we've been called from some other interrupt routine
560 * but who knows what strange things coders get up to!
562 * If the interrupt routine is currently running, wait for it to
563 * finish, unless we appear to have been called via the interrupt
566 while (devpriv->intr_running && devpriv->intr_cpuid != THISCPU) {
567 spin_unlock_irqrestore(&devpriv->ao_spinlock, flags);
568 spin_lock_irqsave(&devpriv->ao_spinlock, flags);
570 spin_unlock_irqrestore(&devpriv->ao_spinlock, flags);
571 /* Reconfigure DAC for insn_write usage. */
572 outw(0, dev->iobase + PCI224_DACCEN); /* Disable channels. */
573 devpriv->daccon = COMBINE(devpriv->daccon,
574 PCI224_DACCON_TRIG_SW |
575 PCI224_DACCON_FIFOINTR_EMPTY,
576 PCI224_DACCON_TRIG_MASK |
577 PCI224_DACCON_FIFOINTR_MASK);
578 outw(devpriv->daccon | PCI224_DACCON_FIFORESET,
579 dev->iobase + PCI224_DACCON);
583 * Handles start of acquisition for the AO subdevice.
585 static void pci224_ao_start(struct comedi_device *dev,
586 struct comedi_subdevice *s)
588 struct comedi_cmd *cmd = &s->async->cmd;
591 set_bit(AO_CMD_STARTED, &devpriv->state);
592 if (!devpriv->ao_stop_continuous && devpriv->ao_stop_count == 0) {
593 /* An empty acquisition! */
594 pci224_ao_stop(dev, s);
595 s->async->events |= COMEDI_CB_EOA;
596 comedi_event(dev, s);
598 /* Enable interrupts. */
599 spin_lock_irqsave(&devpriv->ao_spinlock, flags);
600 if (cmd->stop_src == TRIG_EXT) {
601 devpriv->intsce = PCI224_INTR_EXT | PCI224_INTR_DAC;
603 devpriv->intsce = PCI224_INTR_DAC;
605 outb(devpriv->intsce, devpriv->iobase1 + PCI224_INT_SCE);
606 spin_unlock_irqrestore(&devpriv->ao_spinlock, flags);
611 * Handles interrupts from the DAC FIFO.
613 static void pci224_ao_handle_fifo(struct comedi_device *dev,
614 struct comedi_subdevice *s)
616 struct comedi_cmd *cmd = &s->async->cmd;
617 unsigned int num_scans;
619 unsigned short dacstat;
621 unsigned int bytes_per_scan;
623 if (cmd->chanlist_len) {
624 bytes_per_scan = cmd->chanlist_len * sizeof(short);
626 /* Shouldn't get here! */
627 bytes_per_scan = sizeof(short);
629 /* Determine number of scans available in buffer. */
630 num_scans = comedi_buf_read_n_available(s->async) / bytes_per_scan;
631 if (!devpriv->ao_stop_continuous) {
632 /* Fixed number of scans. */
633 if (num_scans > devpriv->ao_stop_count) {
634 num_scans = devpriv->ao_stop_count;
638 /* Determine how much room is in the FIFO (in samples). */
639 dacstat = inw(dev->iobase + PCI224_DACCON);
640 switch (dacstat & PCI224_DACCON_FIFOFL_MASK) {
641 case PCI224_DACCON_FIFOFL_EMPTY:
642 room = PCI224_FIFO_ROOM_EMPTY;
643 if (!devpriv->ao_stop_continuous && devpriv->ao_stop_count == 0) {
644 /* FIFO empty at end of counted acquisition. */
645 pci224_ao_stop(dev, s);
646 s->async->events |= COMEDI_CB_EOA;
647 comedi_event(dev, s);
651 case PCI224_DACCON_FIFOFL_ONETOHALF:
652 room = PCI224_FIFO_ROOM_ONETOHALF;
654 case PCI224_DACCON_FIFOFL_HALFTOFULL:
655 room = PCI224_FIFO_ROOM_HALFTOFULL;
658 room = PCI224_FIFO_ROOM_FULL;
661 if (room >= PCI224_FIFO_ROOM_ONETOHALF) {
662 /* FIFO is less than half-full. */
663 if (num_scans == 0) {
664 /* Nothing left to put in the FIFO. */
665 pci224_ao_stop(dev, s);
666 s->async->events |= COMEDI_CB_OVERFLOW;
667 printk(KERN_ERR "comedi%d: "
668 "AO buffer underrun\n", dev->minor);
671 /* Determine how many new scans can be put in the FIFO. */
672 if (cmd->chanlist_len) {
673 room /= cmd->chanlist_len;
675 /* Determine how many scans to process. */
676 if (num_scans > room) {
680 for (n = 0; n < num_scans; n++) {
681 cfc_read_array_from_buffer(s, &devpriv->ao_scan_vals[0],
683 for (i = 0; i < cmd->chanlist_len; i++) {
684 outw(devpriv->ao_scan_vals[devpriv->ao_scan_order[i]],
685 dev->iobase + PCI224_DACDATA);
688 if (!devpriv->ao_stop_continuous) {
689 devpriv->ao_stop_count -= num_scans;
690 if (devpriv->ao_stop_count == 0) {
692 * Change FIFO interrupt trigger level to wait
693 * until FIFO is empty.
695 devpriv->daccon = COMBINE(devpriv->daccon,
696 PCI224_DACCON_FIFOINTR_EMPTY,
697 PCI224_DACCON_FIFOINTR_MASK);
698 outw(devpriv->daccon, dev->iobase + PCI224_DACCON);
701 if ((devpriv->daccon & PCI224_DACCON_TRIG_MASK) ==
702 PCI224_DACCON_TRIG_NONE) {
706 * This is the initial DAC FIFO interrupt at the
707 * start of the acquisition. The DAC's scan trigger
708 * has been set to 'none' up until now.
710 * Now that data has been written to the FIFO, the
711 * DAC's scan trigger source can be set to the
714 * BUG: The first scan will be triggered immediately
715 * if the scan trigger source is at logic level 1.
717 if (cmd->scan_begin_src == TRIG_TIMER) {
718 trig = PCI224_DACCON_TRIG_Z2CT0;
720 /* cmd->scan_begin_src == TRIG_EXT */
721 if (cmd->scan_begin_arg & CR_INVERT) {
722 trig = PCI224_DACCON_TRIG_EXTN;
724 trig = PCI224_DACCON_TRIG_EXTP;
727 devpriv->daccon = COMBINE(devpriv->daccon, trig,
728 PCI224_DACCON_TRIG_MASK);
729 outw(devpriv->daccon, dev->iobase + PCI224_DACCON);
731 if (s->async->events) {
732 comedi_event(dev, s);
737 * Internal trigger function to start acquisition on AO subdevice.
740 pci224_ao_inttrig_start(struct comedi_device *dev, struct comedi_subdevice *s,
741 unsigned int trignum)
746 s->async->inttrig = NULLFUNC;
747 pci224_ao_start(dev, s);
752 #define MAX_SCAN_PERIOD 0xFFFFFFFFU
753 #define MIN_SCAN_PERIOD 2500
754 #define CONVERT_PERIOD 625
757 * 'do_cmdtest' function for AO subdevice.
760 pci224_ao_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s,
761 struct comedi_cmd *cmd)
766 /* Step 1: make sure trigger sources are trivially valid. */
768 tmp = cmd->start_src;
769 cmd->start_src &= TRIG_INT | TRIG_EXT;
770 if (!cmd->start_src || tmp != cmd->start_src)
773 tmp = cmd->scan_begin_src;
774 cmd->scan_begin_src &= TRIG_EXT | TRIG_TIMER;
775 if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src)
778 tmp = cmd->convert_src;
779 cmd->convert_src &= TRIG_NOW;
780 if (!cmd->convert_src || tmp != cmd->convert_src)
783 tmp = cmd->scan_end_src;
784 cmd->scan_end_src &= TRIG_COUNT;
785 if (!cmd->scan_end_src || tmp != cmd->scan_end_src)
789 cmd->stop_src &= TRIG_COUNT | TRIG_EXT | TRIG_NONE;
790 if (!cmd->stop_src || tmp != cmd->stop_src)
796 /* Step 2: make sure trigger sources are unique and mutually
799 /* these tests are true if more than one _src bit is set */
800 if ((cmd->start_src & (cmd->start_src - 1)) != 0)
802 if ((cmd->scan_begin_src & (cmd->scan_begin_src - 1)) != 0)
804 if ((cmd->convert_src & (cmd->convert_src - 1)) != 0)
806 if ((cmd->scan_end_src & (cmd->scan_end_src - 1)) != 0)
808 if ((cmd->stop_src & (cmd->stop_src - 1)) != 0)
811 /* There's only one external trigger signal (which makes these
812 * tests easier). Only one thing can use it. */
814 if (cmd->start_src & TRIG_EXT)
816 if (cmd->scan_begin_src & TRIG_EXT)
818 if (cmd->stop_src & TRIG_EXT)
826 /* Step 3: make sure arguments are trivially compatible. */
828 switch (cmd->start_src) {
830 if (cmd->start_arg != 0) {
836 /* Force to external trigger 0. */
837 if ((cmd->start_arg & ~CR_FLAGS_MASK) != 0) {
838 cmd->start_arg = COMBINE(cmd->start_arg, 0,
842 /* The only flag allowed is CR_EDGE, which is ignored. */
843 if ((cmd->start_arg & CR_FLAGS_MASK & ~CR_EDGE) != 0) {
844 cmd->start_arg = COMBINE(cmd->start_arg, 0,
845 CR_FLAGS_MASK & ~CR_EDGE);
851 switch (cmd->scan_begin_src) {
853 if (cmd->scan_begin_arg > MAX_SCAN_PERIOD) {
854 cmd->scan_begin_arg = MAX_SCAN_PERIOD;
857 tmp = cmd->chanlist_len * CONVERT_PERIOD;
858 if (tmp < MIN_SCAN_PERIOD) {
859 tmp = MIN_SCAN_PERIOD;
861 if (cmd->scan_begin_arg < tmp) {
862 cmd->scan_begin_arg = tmp;
867 /* Force to external trigger 0. */
868 if ((cmd->scan_begin_arg & ~CR_FLAGS_MASK) != 0) {
869 cmd->scan_begin_arg = COMBINE(cmd->scan_begin_arg, 0,
873 /* Only allow flags CR_EDGE and CR_INVERT. Ignore CR_EDGE. */
874 if ((cmd->scan_begin_arg & CR_FLAGS_MASK &
875 ~(CR_EDGE | CR_INVERT)) != 0) {
876 cmd->scan_begin_arg = COMBINE(cmd->scan_begin_arg, 0,
877 CR_FLAGS_MASK & ~(CR_EDGE
885 /* cmd->convert_src == TRIG_NOW */
886 if (cmd->convert_arg != 0) {
887 cmd->convert_arg = 0;
891 /* cmd->scan_end_arg == TRIG_COUNT */
892 if (cmd->scan_end_arg != cmd->chanlist_len) {
893 cmd->scan_end_arg = cmd->chanlist_len;
897 switch (cmd->stop_src) {
899 /* Any count allowed. */
902 /* Force to external trigger 0. */
903 if ((cmd->stop_arg & ~CR_FLAGS_MASK) != 0) {
904 cmd->stop_arg = COMBINE(cmd->stop_arg, 0,
908 /* The only flag allowed is CR_EDGE, which is ignored. */
909 if ((cmd->stop_arg & CR_FLAGS_MASK & ~CR_EDGE) != 0) {
910 cmd->stop_arg = COMBINE(cmd->stop_arg, 0,
911 CR_FLAGS_MASK & ~CR_EDGE);
915 if (cmd->stop_arg != 0) {
925 /* Step 4: fix up any arguments. */
927 if (cmd->scan_begin_src == TRIG_TIMER) {
928 unsigned int div1, div2, round;
929 int round_mode = cmd->flags & TRIG_ROUND_MASK;
931 tmp = cmd->scan_begin_arg;
932 /* Check whether to use a single timer. */
933 switch (round_mode) {
934 case TRIG_ROUND_NEAREST:
936 round = TIMEBASE_10MHZ / 2;
938 case TRIG_ROUND_DOWN:
942 round = TIMEBASE_10MHZ - 1;
945 /* Be careful to avoid overflow! */
946 div2 = cmd->scan_begin_arg / TIMEBASE_10MHZ;
947 div2 += (round + cmd->scan_begin_arg % TIMEBASE_10MHZ) /
949 if (div2 <= 0x10000) {
950 /* A single timer will suffice. */
953 cmd->scan_begin_arg = div2 * TIMEBASE_10MHZ;
954 if (cmd->scan_begin_arg < div2 ||
955 cmd->scan_begin_arg < TIMEBASE_10MHZ) {
957 cmd->scan_begin_arg = MAX_SCAN_PERIOD;
960 /* Use two timers. */
961 div1 = devpriv->cached_div1;
962 div2 = devpriv->cached_div2;
963 pci224_cascade_ns_to_timer(TIMEBASE_10MHZ, &div1, &div2,
964 &cmd->scan_begin_arg,
966 devpriv->cached_div1 = div1;
967 devpriv->cached_div2 = div2;
969 if (tmp != cmd->scan_begin_arg) {
977 /* Step 5: check channel list. */
979 if (cmd->chanlist && (cmd->chanlist_len > 0)) {
981 enum { range_err = 1, dupchan_err = 2, };
987 * Check all channels have the same range index. Don't care
988 * about analogue reference, as we can't configure it.
990 * Check the list has no duplicate channels.
992 range = CR_RANGE(cmd->chanlist[0]);
995 for (n = 0; n < cmd->chanlist_len; n++) {
996 ch = CR_CHAN(cmd->chanlist[n]);
997 if (tmp & (1U << ch)) {
998 errors |= dupchan_err;
1001 if (CR_RANGE(cmd->chanlist[n]) != range) {
1002 errors |= range_err;
1006 if (errors & dupchan_err) {
1007 DPRINTK("comedi%d: " DRIVER_NAME
1009 "entries in chanlist must contain no "
1010 "duplicate channels\n", dev->minor);
1012 if (errors & range_err) {
1013 DPRINTK("comedi%d: " DRIVER_NAME
1015 "entries in chanlist must all have "
1016 "the same range index\n", dev->minor);
1029 * 'do_cmd' function for AO subdevice.
1031 static int pci224_ao_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
1033 struct comedi_cmd *cmd = &s->async->cmd;
1038 unsigned long flags;
1040 /* Cannot handle null/empty chanlist. */
1041 if (cmd->chanlist == NULL || cmd->chanlist_len == 0) {
1045 /* Determine which channels are enabled and their load order. */
1046 devpriv->ao_enab = 0;
1048 for (i = 0; i < cmd->chanlist_len; i++) {
1049 ch = CR_CHAN(cmd->chanlist[i]);
1050 devpriv->ao_enab |= 1U << ch;
1052 for (j = 0; j < cmd->chanlist_len; j++) {
1053 if (CR_CHAN(cmd->chanlist[j]) < ch) {
1057 devpriv->ao_scan_order[rank] = i;
1060 /* Set enabled channels. */
1061 outw(devpriv->ao_enab, dev->iobase + PCI224_DACCEN);
1063 /* Determine range and polarity. All channels the same. */
1064 range = CR_RANGE(cmd->chanlist[0]);
1067 * Set DAC range and polarity.
1068 * Set DAC scan trigger source to 'none'.
1069 * Set DAC FIFO interrupt trigger level to 'not half full'.
1072 * N.B. DAC FIFO interrupts are currently disabled.
1074 devpriv->daccon = COMBINE(devpriv->daccon,
1076 hwrange[range] | PCI224_DACCON_TRIG_NONE |
1077 PCI224_DACCON_FIFOINTR_NHALF),
1078 (PCI224_DACCON_POLAR_MASK |
1079 PCI224_DACCON_VREF_MASK |
1080 PCI224_DACCON_TRIG_MASK |
1081 PCI224_DACCON_FIFOINTR_MASK));
1082 outw(devpriv->daccon | PCI224_DACCON_FIFORESET,
1083 dev->iobase + PCI224_DACCON);
1085 if (cmd->scan_begin_src == TRIG_TIMER) {
1086 unsigned int div1, div2, round;
1087 unsigned int ns = cmd->scan_begin_arg;
1088 int round_mode = cmd->flags & TRIG_ROUND_MASK;
1090 /* Check whether to use a single timer. */
1091 switch (round_mode) {
1092 case TRIG_ROUND_NEAREST:
1094 round = TIMEBASE_10MHZ / 2;
1096 case TRIG_ROUND_DOWN:
1100 round = TIMEBASE_10MHZ - 1;
1103 /* Be careful to avoid overflow! */
1104 div2 = cmd->scan_begin_arg / TIMEBASE_10MHZ;
1105 div2 += (round + cmd->scan_begin_arg % TIMEBASE_10MHZ) /
1107 if (div2 <= 0x10000) {
1108 /* A single timer will suffice. */
1112 div1 = 1; /* Flag that single timer to be used. */
1114 /* Use two timers. */
1115 div1 = devpriv->cached_div1;
1116 div2 = devpriv->cached_div2;
1117 pci224_cascade_ns_to_timer(TIMEBASE_10MHZ, &div1, &div2,
1122 * The output of timer Z2-0 will be used as the scan trigger
1125 /* Make sure Z2-0 is gated on. */
1126 outb(GAT_CONFIG(0, GAT_VCC),
1127 devpriv->iobase1 + PCI224_ZGAT_SCE);
1129 /* Not cascading. Z2-0 needs 10 MHz clock. */
1130 outb(CLK_CONFIG(0, CLK_10MHZ),
1131 devpriv->iobase1 + PCI224_ZCLK_SCE);
1133 /* Cascading with Z2-2. */
1134 /* Make sure Z2-2 is gated on. */
1135 outb(GAT_CONFIG(2, GAT_VCC),
1136 devpriv->iobase1 + PCI224_ZGAT_SCE);
1137 /* Z2-2 needs 10 MHz clock. */
1138 outb(CLK_CONFIG(2, CLK_10MHZ),
1139 devpriv->iobase1 + PCI224_ZCLK_SCE);
1140 /* Load Z2-2 mode (2) and counter (div1). */
1141 i8254_load(devpriv->iobase1 + PCI224_Z2_CT0, 0,
1143 /* Z2-0 is clocked from Z2-2's output. */
1144 outb(CLK_CONFIG(0, CLK_OUTNM1),
1145 devpriv->iobase1 + PCI224_ZCLK_SCE);
1147 /* Load Z2-0 mode (2) and counter (div2). */
1148 i8254_load(devpriv->iobase1 + PCI224_Z2_CT0, 0, 0, div2, 2);
1152 * Sort out end of acquisition.
1154 switch (cmd->stop_src) {
1156 /* Fixed number of scans. */
1157 devpriv->ao_stop_continuous = 0;
1158 devpriv->ao_stop_count = cmd->stop_arg;
1161 /* Continuous scans. */
1162 devpriv->ao_stop_continuous = 1;
1163 devpriv->ao_stop_count = 0;
1168 * Sort out start of acquisition.
1170 switch (cmd->start_src) {
1172 spin_lock_irqsave(&devpriv->ao_spinlock, flags);
1173 s->async->inttrig = &pci224_ao_inttrig_start;
1174 spin_unlock_irqrestore(&devpriv->ao_spinlock, flags);
1177 /* Enable external interrupt trigger to start acquisition. */
1178 spin_lock_irqsave(&devpriv->ao_spinlock, flags);
1179 devpriv->intsce |= PCI224_INTR_EXT;
1180 outb(devpriv->intsce, devpriv->iobase1 + PCI224_INT_SCE);
1181 spin_unlock_irqrestore(&devpriv->ao_spinlock, flags);
1189 * 'cancel' function for AO subdevice.
1191 static int pci224_ao_cancel(struct comedi_device *dev,
1192 struct comedi_subdevice *s)
1194 pci224_ao_stop(dev, s);
1199 * 'munge' data for AO command.
1202 pci224_ao_munge(struct comedi_device *dev, struct comedi_subdevice *s,
1203 void *data, unsigned int num_bytes, unsigned int chan_index)
1205 struct comedi_async *async = s->async;
1206 short *array = data;
1207 unsigned int length = num_bytes / sizeof(*array);
1208 unsigned int offset;
1212 /* The hardware expects 16-bit numbers. */
1213 shift = 16 - thisboard->ao_bits;
1214 /* Channels will be all bipolar or all unipolar. */
1215 if ((devpriv->hwrange[CR_RANGE(async->cmd.chanlist[0])] &
1216 PCI224_DACCON_POLAR_MASK) == PCI224_DACCON_POLAR_UNI) {
1223 /* Munge the data. */
1224 for (i = 0; i < length; i++) {
1225 array[i] = (array[i] << shift) - offset;
1230 * Interrupt handler.
1232 static irqreturn_t pci224_interrupt(int irq, void *d)
1234 struct comedi_device *dev = d;
1235 struct comedi_subdevice *s = &dev->subdevices[0];
1236 struct comedi_cmd *cmd;
1237 unsigned char intstat, valid_intstat;
1238 unsigned char curenab;
1240 unsigned long flags;
1242 intstat = inb(devpriv->iobase1 + PCI224_INT_SCE) & 0x3F;
1245 spin_lock_irqsave(&devpriv->ao_spinlock, flags);
1246 valid_intstat = devpriv->intsce & intstat;
1247 /* Temporarily disable interrupt sources. */
1248 curenab = devpriv->intsce & ~intstat;
1249 outb(curenab, devpriv->iobase1 + PCI224_INT_SCE);
1250 devpriv->intr_running = 1;
1251 devpriv->intr_cpuid = THISCPU;
1252 spin_unlock_irqrestore(&devpriv->ao_spinlock, flags);
1253 if (valid_intstat != 0) {
1254 cmd = &s->async->cmd;
1255 if (valid_intstat & PCI224_INTR_EXT) {
1256 devpriv->intsce &= ~PCI224_INTR_EXT;
1257 if (cmd->start_src == TRIG_EXT) {
1258 pci224_ao_start(dev, s);
1259 } else if (cmd->stop_src == TRIG_EXT) {
1260 pci224_ao_stop(dev, s);
1263 if (valid_intstat & PCI224_INTR_DAC) {
1264 pci224_ao_handle_fifo(dev, s);
1267 /* Reenable interrupt sources. */
1268 spin_lock_irqsave(&devpriv->ao_spinlock, flags);
1269 if (curenab != devpriv->intsce) {
1270 outb(devpriv->intsce,
1271 devpriv->iobase1 + PCI224_INT_SCE);
1273 devpriv->intr_running = 0;
1274 spin_unlock_irqrestore(&devpriv->ao_spinlock, flags);
1276 return IRQ_RETVAL(retval);
1280 * This function looks for a PCI device matching the requested board name,
1284 pci224_find_pci(struct comedi_device *dev, int bus, int slot,
1285 struct pci_dev **pci_dev_p)
1287 struct pci_dev *pci_dev = NULL;
1291 /* Look for matching PCI device. */
1292 for (pci_dev = pci_get_device(PCI_VENDOR_ID_AMPLICON, PCI_ANY_ID, NULL);
1294 pci_dev = pci_get_device(PCI_VENDOR_ID_AMPLICON, PCI_ANY_ID,
1296 /* If bus/slot specified, check them. */
1298 if (bus != pci_dev->bus->number
1299 || slot != PCI_SLOT(pci_dev->devfn))
1302 if (thisboard->model == any_model) {
1303 /* Match any supported model. */
1306 for (i = 0; i < ARRAY_SIZE(pci224_boards); i++) {
1307 if (pci_dev->device == pci224_boards[i].devid) {
1308 /* Change board_ptr to matched board. */
1309 dev->board_ptr = &pci224_boards[i];
1313 if (i == ARRAY_SIZE(pci224_boards))
1316 /* Match specific model name. */
1317 if (thisboard->devid != pci_dev->device)
1321 /* Found a match. */
1322 *pci_dev_p = pci_dev;
1325 /* No match found. */
1327 printk(KERN_ERR "comedi%d: error! "
1328 "no %s found at pci %02x:%02x!\n",
1329 dev->minor, thisboard->name, bus, slot);
1331 printk(KERN_ERR "comedi%d: error! no %s found!\n",
1332 dev->minor, thisboard->name);
1338 * Attach is called by the Comedi core to configure the driver
1339 * for a particular board. If you specified a board_name array
1340 * in the driver structure, dev->board_ptr contains that
1343 static int pci224_attach(struct comedi_device *dev, struct comedi_devconfig *it)
1345 struct comedi_subdevice *s;
1346 struct pci_dev *pci_dev;
1348 int bus = 0, slot = 0;
1352 printk(KERN_DEBUG "comedi%d: %s: attach\n", dev->minor, DRIVER_NAME);
1354 bus = it->options[0];
1355 slot = it->options[1];
1356 ret = alloc_private(dev, sizeof(struct pci224_private));
1358 printk(KERN_ERR "comedi%d: error! out of memory!\n",
1363 ret = pci224_find_pci(dev, bus, slot, &pci_dev);
1367 devpriv->pci_dev = pci_dev;
1368 ret = comedi_pci_enable(pci_dev, DRIVER_NAME);
1371 "comedi%d: error! cannot enable PCI device "
1372 "and request regions!\n", dev->minor);
1375 spin_lock_init(&devpriv->ao_spinlock);
1377 devpriv->iobase1 = pci_resource_start(pci_dev, 2);
1378 dev->iobase = pci_resource_start(pci_dev, 3);
1381 /* Allocate readback buffer for AO channels. */
1382 devpriv->ao_readback = kmalloc(sizeof(devpriv->ao_readback[0]) *
1383 thisboard->ao_chans, GFP_KERNEL);
1384 if (!devpriv->ao_readback) {
1388 /* Allocate buffer to hold values for AO channel scan. */
1389 devpriv->ao_scan_vals = kmalloc(sizeof(devpriv->ao_scan_vals[0]) *
1390 thisboard->ao_chans, GFP_KERNEL);
1391 if (!devpriv->ao_scan_vals) {
1395 /* Allocate buffer to hold AO channel scan order. */
1396 devpriv->ao_scan_order = kmalloc(sizeof(devpriv->ao_scan_order[0]) *
1397 thisboard->ao_chans, GFP_KERNEL);
1398 if (!devpriv->ao_scan_order) {
1402 /* Disable interrupt sources. */
1403 devpriv->intsce = 0;
1404 outb(0, devpriv->iobase1 + PCI224_INT_SCE);
1406 /* Initialize the DAC hardware. */
1407 outw(PCI224_DACCON_GLOBALRESET, dev->iobase + PCI224_DACCON);
1408 outw(0, dev->iobase + PCI224_DACCEN);
1409 outw(0, dev->iobase + PCI224_FIFOSIZ);
1410 devpriv->daccon = (PCI224_DACCON_TRIG_SW | PCI224_DACCON_POLAR_BI |
1411 PCI224_DACCON_FIFOENAB |
1412 PCI224_DACCON_FIFOINTR_EMPTY);
1413 outw(devpriv->daccon | PCI224_DACCON_FIFORESET,
1414 dev->iobase + PCI224_DACCON);
1416 /* Allocate subdevices. There is only one! */
1417 ret = alloc_subdevices(dev, 1);
1419 printk(KERN_ERR "comedi%d: error! out of memory!\n",
1424 s = dev->subdevices + 0;
1425 /* Analog output subdevice. */
1426 s->type = COMEDI_SUBD_AO;
1427 s->subdev_flags = SDF_WRITABLE | SDF_GROUND | SDF_CMD_WRITE;
1428 s->n_chan = thisboard->ao_chans;
1429 s->maxdata = (1 << thisboard->ao_bits) - 1;
1430 s->insn_write = &pci224_ao_insn_write;
1431 s->insn_read = &pci224_ao_insn_read;
1432 s->len_chanlist = s->n_chan;
1434 dev->write_subdev = s;
1435 s->do_cmd = &pci224_ao_cmd;
1436 s->do_cmdtest = &pci224_ao_cmdtest;
1437 s->cancel = &pci224_ao_cancel;
1438 s->munge = &pci224_ao_munge;
1440 /* Sort out channel range options. */
1441 if (thisboard->model == pci234_model) {
1442 /* PCI234 range options. */
1443 const struct comedi_lrange **range_table_list;
1445 s->range_table_list = range_table_list =
1446 kmalloc(sizeof(struct comedi_lrange *) * s->n_chan,
1448 if (!s->range_table_list) {
1451 for (n = 2; n < 3 + s->n_chan; n++) {
1452 if (it->options[n] < 0 || it->options[n] > 1) {
1453 printk(KERN_WARNING "comedi%d: %s: warning! "
1454 "bad options[%u]=%d\n",
1455 dev->minor, DRIVER_NAME, n,
1459 for (n = 0; n < s->n_chan; n++) {
1460 if (n < COMEDI_NDEVCONFOPTS - 3 &&
1461 it->options[3 + n] == 1) {
1462 if (it->options[2] == 1) {
1463 range_table_list[n] = &range_pci234_ext;
1465 range_table_list[n] = &range_bipolar5;
1468 if (it->options[2] == 1) {
1469 range_table_list[n] =
1472 range_table_list[n] = &range_bipolar10;
1476 devpriv->hwrange = hwrange_pci234;
1478 /* PCI224 range options. */
1479 if (it->options[2] == 1) {
1480 s->range_table = &range_pci224_external;
1481 devpriv->hwrange = hwrange_pci224_external;
1483 if (it->options[2] != 0) {
1484 printk(KERN_WARNING "comedi%d: %s: warning! "
1485 "bad options[2]=%d\n",
1486 dev->minor, DRIVER_NAME, it->options[2]);
1488 s->range_table = &range_pci224_internal;
1489 devpriv->hwrange = hwrange_pci224_internal;
1493 dev->board_name = thisboard->name;
1496 ret = request_irq(irq, pci224_interrupt, IRQF_SHARED,
1499 printk(KERN_ERR "comedi%d: error! "
1500 "unable to allocate irq %u\n", dev->minor, irq);
1507 printk(KERN_INFO "comedi%d: %s ", dev->minor, dev->board_name);
1508 printk("(pci %s) ", pci_name(pci_dev));
1510 printk("(irq %u%s) ", irq, (dev->irq ? "" : " UNAVAILABLE"));
1512 printk("(no irq) ");
1515 printk("attached\n");
1521 * _detach is called to deconfigure a device. It should deallocate
1523 * This function is also called when _attach() fails, so it should be
1524 * careful not to release resources that were not necessarily
1525 * allocated by _attach(). dev->private and dev->subdevices are
1526 * deallocated automatically by the core.
1528 static int pci224_detach(struct comedi_device *dev)
1530 printk(KERN_DEBUG "comedi%d: %s: detach\n", dev->minor, DRIVER_NAME);
1533 free_irq(dev->irq, dev);
1535 if (dev->subdevices) {
1536 struct comedi_subdevice *s;
1538 s = dev->subdevices + 0;
1540 kfree(s->range_table_list);
1543 kfree(devpriv->ao_readback);
1544 kfree(devpriv->ao_scan_vals);
1545 kfree(devpriv->ao_scan_order);
1546 if (devpriv->pci_dev) {
1548 comedi_pci_disable(devpriv->pci_dev);
1550 pci_dev_put(devpriv->pci_dev);
1553 if (dev->board_name) {
1554 printk(KERN_INFO "comedi%d: %s removed\n",
1555 dev->minor, dev->board_name);