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 "../comedidev.h"
108 #include "comedi_pci.h"
110 #include "comedi_fc.h"
113 #define DRIVER_NAME "amplc_pci224"
118 /* #define PCI_VENDOR_ID_AMPLICON 0x14dc */
119 #define PCI_DEVICE_ID_AMPLICON_PCI224 0x0007
120 #define PCI_DEVICE_ID_AMPLICON_PCI234 0x0008
121 #define PCI_DEVICE_ID_INVALID 0xffff
124 * PCI224/234 i/o space 1 (PCIBAR2) registers.
126 #define PCI224_IO1_SIZE 0x20 /* Size of i/o space 1 (8-bit registers) */
127 #define PCI224_Z2_CT0 0x14 /* 82C54 counter/timer 0 */
128 #define PCI224_Z2_CT1 0x15 /* 82C54 counter/timer 1 */
129 #define PCI224_Z2_CT2 0x16 /* 82C54 counter/timer 2 */
130 #define PCI224_Z2_CTC 0x17 /* 82C54 counter/timer control word */
131 #define PCI224_ZCLK_SCE 0x1A /* Group Z Clock Configuration Register */
132 #define PCI224_ZGAT_SCE 0x1D /* Group Z Gate Configuration Register */
133 #define PCI224_INT_SCE 0x1E /* ISR Interrupt source mask register */
134 /* /Interrupt status */
137 * PCI224/234 i/o space 2 (PCIBAR3) 16-bit registers.
139 #define PCI224_IO2_SIZE 0x10 /* Size of i/o space 2 (16-bit registers). */
140 #define PCI224_DACDATA 0x00 /* (w-o) DAC FIFO data. */
141 #define PCI224_SOFTTRIG 0x00 /* (r-o) DAC software scan trigger. */
142 #define PCI224_DACCON 0x02 /* (r/w) DAC status/configuration. */
143 #define PCI224_FIFOSIZ 0x04 /* (w-o) FIFO size for wraparound mode. */
144 #define PCI224_DACCEN 0x06 /* (w-o) DAC channel enable register. */
149 /* (r/w) Scan trigger. */
150 #define PCI224_DACCON_TRIG_MASK (7 << 0)
151 #define PCI224_DACCON_TRIG_NONE (0 << 0) /* none */
152 #define PCI224_DACCON_TRIG_SW (1 << 0) /* software trig */
153 #define PCI224_DACCON_TRIG_EXTP (2 << 0) /* ext +ve edge */
154 #define PCI224_DACCON_TRIG_EXTN (3 << 0) /* ext -ve edge */
155 #define PCI224_DACCON_TRIG_Z2CT0 (4 << 0) /* Z2 CT0 out */
156 #define PCI224_DACCON_TRIG_Z2CT1 (5 << 0) /* Z2 CT1 out */
157 #define PCI224_DACCON_TRIG_Z2CT2 (6 << 0) /* Z2 CT2 out */
158 /* (r/w) Polarity (PCI224 only, PCI234 always bipolar!). */
159 #define PCI224_DACCON_POLAR_MASK (1 << 3)
160 #define PCI224_DACCON_POLAR_UNI (0 << 3) /* range [0,Vref] */
161 #define PCI224_DACCON_POLAR_BI (1 << 3) /* range [-Vref,Vref] */
162 /* (r/w) Internal Vref (PCI224 only, when LK1 in position 1-2). */
163 #define PCI224_DACCON_VREF_MASK (3 << 4)
164 #define PCI224_DACCON_VREF_1_25 (0 << 4) /* Vref = 1.25V */
165 #define PCI224_DACCON_VREF_2_5 (1 << 4) /* Vref = 2.5V */
166 #define PCI224_DACCON_VREF_5 (2 << 4) /* Vref = 5V */
167 #define PCI224_DACCON_VREF_10 (3 << 4) /* Vref = 10V */
168 /* (r/w) Wraparound mode enable (to play back stored waveform). */
169 #define PCI224_DACCON_FIFOWRAP (1 << 7)
170 /* (r/w) FIFO enable. It MUST be set! */
171 #define PCI224_DACCON_FIFOENAB (1 << 8)
172 /* (r/w) FIFO interrupt trigger level (most values are not very useful). */
173 #define PCI224_DACCON_FIFOINTR_MASK (7 << 9)
174 #define PCI224_DACCON_FIFOINTR_EMPTY (0 << 9) /* when empty */
175 #define PCI224_DACCON_FIFOINTR_NEMPTY (1 << 9) /* when not empty */
176 #define PCI224_DACCON_FIFOINTR_NHALF (2 << 9) /* when not half full */
177 #define PCI224_DACCON_FIFOINTR_HALF (3 << 9) /* when half full */
178 #define PCI224_DACCON_FIFOINTR_NFULL (4 << 9) /* when not full */
179 #define PCI224_DACCON_FIFOINTR_FULL (5 << 9) /* when full */
180 /* (r-o) FIFO fill level. */
181 #define PCI224_DACCON_FIFOFL_MASK (7 << 12)
182 #define PCI224_DACCON_FIFOFL_EMPTY (1 << 12) /* 0 */
183 #define PCI224_DACCON_FIFOFL_ONETOHALF (0 << 12) /* [1,2048] */
184 #define PCI224_DACCON_FIFOFL_HALFTOFULL (4 << 12) /* [2049,4095] */
185 #define PCI224_DACCON_FIFOFL_FULL (6 << 12) /* 4096 */
186 /* (r-o) DAC busy flag. */
187 #define PCI224_DACCON_BUSY (1 << 15)
188 /* (w-o) FIFO reset. */
189 #define PCI224_DACCON_FIFORESET (1 << 12)
190 /* (w-o) Global reset (not sure what it does). */
191 #define PCI224_DACCON_GLOBALRESET (1 << 13)
196 #define PCI224_FIFO_SIZE 4096
199 * DAC FIFO guaranteed minimum room available, depending on reported fill level.
200 * The maximum room available depends on the reported fill level and how much
203 #define PCI224_FIFO_ROOM_EMPTY PCI224_FIFO_SIZE
204 #define PCI224_FIFO_ROOM_ONETOHALF (PCI224_FIFO_SIZE / 2)
205 #define PCI224_FIFO_ROOM_HALFTOFULL 1
206 #define PCI224_FIFO_ROOM_FULL 0
209 * Counter/timer clock input configuration sources.
211 #define CLK_CLK 0 /* reserved (channel-specific clock) */
212 #define CLK_10MHZ 1 /* internal 10 MHz clock */
213 #define CLK_1MHZ 2 /* internal 1 MHz clock */
214 #define CLK_100KHZ 3 /* internal 100 kHz clock */
215 #define CLK_10KHZ 4 /* internal 10 kHz clock */
216 #define CLK_1KHZ 5 /* internal 1 kHz clock */
217 #define CLK_OUTNM1 6 /* output of channel-1 modulo total */
218 #define CLK_EXT 7 /* external clock */
219 /* Macro to construct clock input configuration register value. */
220 #define CLK_CONFIG(chan, src) ((((chan) & 3) << 3) | ((src) & 7))
221 /* Timebases in ns. */
222 #define TIMEBASE_10MHZ 100
223 #define TIMEBASE_1MHZ 1000
224 #define TIMEBASE_100KHZ 10000
225 #define TIMEBASE_10KHZ 100000
226 #define TIMEBASE_1KHZ 1000000
229 * Counter/timer gate input configuration sources.
231 #define GAT_VCC 0 /* VCC (i.e. enabled) */
232 #define GAT_GND 1 /* GND (i.e. disabled) */
233 #define GAT_EXT 2 /* reserved (external gate input) */
234 #define GAT_NOUTNM2 3 /* inverted output of channel-2 modulo total */
235 /* Macro to construct gate input configuration register value. */
236 #define GAT_CONFIG(chan, src) ((((chan) & 3) << 3) | ((src) & 7))
239 * Summary of CLK_OUTNM1 and GAT_NOUTNM2 connections for PCI224 and PCI234:
241 * Channel's Channel's
242 * clock input gate input
243 * Channel CLK_OUTNM1 GAT_NOUTNM2
244 * ------- ---------- -----------
245 * Z2-CT0 Z2-CT2-OUT /Z2-CT1-OUT
246 * Z2-CT1 Z2-CT0-OUT /Z2-CT2-OUT
247 * Z2-CT2 Z2-CT1-OUT /Z2-CT0-OUT
251 * Interrupt enable/status bits
253 #define PCI224_INTR_EXT 0x01 /* rising edge on external input */
254 #define PCI224_INTR_DAC 0x04 /* DAC (FIFO) interrupt */
255 #define PCI224_INTR_Z2CT1 0x20 /* rising edge on Z2-CT1 output */
257 #define PCI224_INTR_EDGE_BITS (PCI224_INTR_EXT | PCI224_INTR_Z2CT1)
258 #define PCI224_INTR_LEVEL_BITS PCI224_INTR_DACFIFO
264 /* Combine old and new bits. */
265 #define COMBINE(old, new, mask) (((old) & ~(mask)) | ((new) & (mask)))
267 /* A generic null function pointer value. */
270 /* Current CPU. XXX should this be hard_smp_processor_id()? */
271 #define THISCPU smp_processor_id()
273 /* State bits for use with atomic bit operations. */
274 #define AO_CMD_STARTED 0
280 /* The software selectable internal ranges for PCI224 (option[2] == 0). */
281 static const comedi_lrange range_pci224_internal = {
295 static const unsigned short hwrange_pci224_internal[8] = {
296 PCI224_DACCON_POLAR_BI | PCI224_DACCON_VREF_10,
297 PCI224_DACCON_POLAR_BI | PCI224_DACCON_VREF_5,
298 PCI224_DACCON_POLAR_BI | PCI224_DACCON_VREF_2_5,
299 PCI224_DACCON_POLAR_BI | PCI224_DACCON_VREF_1_25,
300 PCI224_DACCON_POLAR_UNI | PCI224_DACCON_VREF_10,
301 PCI224_DACCON_POLAR_UNI | PCI224_DACCON_VREF_5,
302 PCI224_DACCON_POLAR_UNI | PCI224_DACCON_VREF_2_5,
303 PCI224_DACCON_POLAR_UNI | PCI224_DACCON_VREF_1_25,
306 /* The software selectable external ranges for PCI224 (option[2] == 1). */
307 static const comedi_lrange range_pci224_external = {
310 RANGE_ext(-1, 1), /* bipolar [-Vref,+Vref] */
311 RANGE_ext(0, 1), /* unipolar [0,+Vref] */
315 static const unsigned short hwrange_pci224_external[2] = {
316 PCI224_DACCON_POLAR_BI,
317 PCI224_DACCON_POLAR_UNI,
320 /* The hardware selectable Vref*2 external range for PCI234
321 * (option[2] == 1, option[3+n] == 0). */
322 static const comedi_lrange range_pci234_ext2 = {
329 /* The hardware selectable Vref external range for PCI234
330 * (option[2] == 1, option[3+n] == 1). */
331 static const comedi_lrange range_pci234_ext = {
338 /* This serves for all the PCI234 ranges. */
339 static const unsigned short hwrange_pci234[1] = {
340 PCI224_DACCON_POLAR_BI, /* bipolar - hardware ignores it! */
344 * Board descriptions.
347 enum pci224_model { any_model, pci224_model, pci234_model };
349 typedef struct pci224_board_struct {
351 unsigned short devid;
352 enum pci224_model model;
353 unsigned int ao_chans;
354 unsigned int ao_bits;
357 static const pci224_board pci224_boards[] = {
360 devid: PCI_DEVICE_ID_AMPLICON_PCI224,
367 devid: PCI_DEVICE_ID_AMPLICON_PCI234,
374 devid: PCI_DEVICE_ID_INVALID,
375 model: any_model, /* wildcard */
383 static DEFINE_PCI_DEVICE_TABLE(pci224_pci_table) = {
384 {PCI_VENDOR_ID_AMPLICON, PCI_DEVICE_ID_AMPLICON_PCI224,
385 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
386 {PCI_VENDOR_ID_AMPLICON, PCI_DEVICE_ID_AMPLICON_PCI234,
387 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
391 MODULE_DEVICE_TABLE(pci, pci224_pci_table);
394 * Useful for shorthand access to the particular board structure
396 #define thisboard ((pci224_board *)dev->board_ptr)
398 /* this structure is for data unique to this hardware driver. If
399 several hardware drivers keep similar information in this structure,
400 feel free to suggest moving the variable to the struct comedi_device struct. */
402 struct pci_dev *pci_dev; /* PCI device */
403 const unsigned short *hwrange;
404 unsigned long iobase1;
406 spinlock_t ao_spinlock;
407 unsigned int *ao_readback;
409 unsigned char *ao_scan_order;
412 unsigned short daccon;
413 unsigned int cached_div1;
414 unsigned int cached_div2;
415 unsigned int ao_stop_count;
416 short ao_stop_continuous;
417 unsigned short ao_enab; /* max 16 channels so 'short' will do */
418 unsigned char intsce;
421 #define devpriv ((pci224_private *)dev->private)
424 * The comedi_driver structure tells the Comedi core module
425 * which functions to call to configure/deconfigure (attach/detach)
426 * the board, and also about the kernel module that contains
429 static int pci224_attach(struct comedi_device * dev, comedi_devconfig * it);
430 static int pci224_detach(struct comedi_device * dev);
431 static comedi_driver driver_amplc_pci224 = {
432 driver_name:DRIVER_NAME,
434 attach:pci224_attach,
435 detach:pci224_detach,
436 board_name:&pci224_boards[0].name,
437 offset:sizeof(pci224_board),
438 num_names:sizeof(pci224_boards) / sizeof(pci224_board),
441 COMEDI_PCI_INITCLEANUP(driver_amplc_pci224, pci224_pci_table);
444 * Called from the 'insn_write' function to perform a single write.
447 pci224_ao_set_data(struct comedi_device * dev, int chan, int range, unsigned int data)
449 unsigned short mangled;
451 /* Store unmangled data for readback. */
452 devpriv->ao_readback[chan] = data;
453 /* Enable the channel. */
454 outw(1 << chan, dev->iobase + PCI224_DACCEN);
455 /* Set range and reset FIFO. */
456 devpriv->daccon = COMBINE(devpriv->daccon, devpriv->hwrange[range],
457 (PCI224_DACCON_POLAR_MASK | PCI224_DACCON_VREF_MASK));
458 outw(devpriv->daccon | PCI224_DACCON_FIFORESET,
459 dev->iobase + PCI224_DACCON);
461 * Mangle the data. The hardware expects:
462 * - bipolar: 16-bit 2's complement
463 * - unipolar: 16-bit unsigned
465 mangled = (unsigned short)data << (16 - thisboard->ao_bits);
466 if ((devpriv->daccon & PCI224_DACCON_POLAR_MASK) ==
467 PCI224_DACCON_POLAR_BI) {
470 /* Write mangled data to the FIFO. */
471 outw(mangled, dev->iobase + PCI224_DACDATA);
472 /* Trigger the conversion. */
473 inw(dev->iobase + PCI224_SOFTTRIG);
477 * 'insn_write' function for AO subdevice.
480 pci224_ao_insn_write(struct comedi_device * dev, struct comedi_subdevice * s,
481 comedi_insn * insn, unsigned int * data)
486 /* Unpack channel and range. */
487 chan = CR_CHAN(insn->chanspec);
488 range = CR_RANGE(insn->chanspec);
490 /* Writing a list of values to an AO channel is probably not
491 * very useful, but that's how the interface is defined. */
492 for (i = 0; i < insn->n; i++) {
493 pci224_ao_set_data(dev, chan, range, data[i]);
499 * 'insn_read' function for AO subdevice.
501 * N.B. The value read will not be valid if the DAC channel has
502 * never been written successfully since the device was attached
503 * or since the channel has been used by an AO streaming write
507 pci224_ao_insn_read(struct comedi_device * dev, struct comedi_subdevice * s,
508 comedi_insn * insn, unsigned int * data)
513 chan = CR_CHAN(insn->chanspec);
515 for (i = 0; i < insn->n; i++) {
516 data[i] = devpriv->ao_readback[chan];
523 * Just a wrapper for the inline function 'i8253_cascade_ns_to_timer'.
526 pci224_cascade_ns_to_timer(int osc_base, unsigned int *d1, unsigned int *d2,
527 unsigned int *nanosec, int round_mode)
529 i8253_cascade_ns_to_timer(osc_base, d1, d2, nanosec, round_mode);
533 * Kills a command running on the AO subdevice.
535 static void pci224_ao_stop(struct comedi_device * dev, struct comedi_subdevice * s)
539 if (!test_and_clear_bit(AO_CMD_STARTED, &devpriv->state)) {
543 comedi_spin_lock_irqsave(&devpriv->ao_spinlock, flags);
544 /* Kill the interrupts. */
546 outb(0, devpriv->iobase1 + PCI224_INT_SCE);
548 * Interrupt routine may or may not be running. We may or may not
549 * have been called from the interrupt routine (directly or
550 * indirectly via a comedi_events() callback routine). It's highly
551 * unlikely that we've been called from some other interrupt routine
552 * but who knows what strange things coders get up to!
554 * If the interrupt routine is currently running, wait for it to
555 * finish, unless we appear to have been called via the interrupt
558 while (devpriv->intr_running && devpriv->intr_cpuid != THISCPU) {
559 comedi_spin_unlock_irqrestore(&devpriv->ao_spinlock, flags);
560 comedi_spin_lock_irqsave(&devpriv->ao_spinlock, flags);
562 comedi_spin_unlock_irqrestore(&devpriv->ao_spinlock, flags);
563 /* Reconfigure DAC for insn_write usage. */
564 outw(0, dev->iobase + PCI224_DACCEN); /* Disable channels. */
565 devpriv->daccon = COMBINE(devpriv->daccon,
566 PCI224_DACCON_TRIG_SW | PCI224_DACCON_FIFOINTR_EMPTY,
567 PCI224_DACCON_TRIG_MASK | PCI224_DACCON_FIFOINTR_MASK);
568 outw(devpriv->daccon | PCI224_DACCON_FIFORESET,
569 dev->iobase + PCI224_DACCON);
573 * Handles start of acquisition for the AO subdevice.
575 static void pci224_ao_start(struct comedi_device * dev, struct comedi_subdevice * s)
577 comedi_cmd *cmd = &s->async->cmd;
580 set_bit(AO_CMD_STARTED, &devpriv->state);
581 if (!devpriv->ao_stop_continuous && devpriv->ao_stop_count == 0) {
582 /* An empty acquisition! */
583 pci224_ao_stop(dev, s);
584 s->async->events |= COMEDI_CB_EOA;
585 comedi_event(dev, s);
587 /* Enable interrupts. */
588 comedi_spin_lock_irqsave(&devpriv->ao_spinlock, flags);
589 if (cmd->stop_src == TRIG_EXT) {
590 devpriv->intsce = PCI224_INTR_EXT | PCI224_INTR_DAC;
592 devpriv->intsce = PCI224_INTR_DAC;
594 outb(devpriv->intsce, devpriv->iobase1 + PCI224_INT_SCE);
595 comedi_spin_unlock_irqrestore(&devpriv->ao_spinlock, flags);
600 * Handles interrupts from the DAC FIFO.
602 static void pci224_ao_handle_fifo(struct comedi_device * dev, struct comedi_subdevice * s)
604 comedi_cmd *cmd = &s->async->cmd;
605 unsigned int num_scans;
607 unsigned short dacstat;
609 unsigned int bytes_per_scan;
611 if (cmd->chanlist_len) {
612 bytes_per_scan = cmd->chanlist_len * sizeof(short);
614 /* Shouldn't get here! */
615 bytes_per_scan = sizeof(short);
617 /* Determine number of scans available in buffer. */
618 num_scans = comedi_buf_read_n_available(s->async) / bytes_per_scan;
619 if (!devpriv->ao_stop_continuous) {
620 /* Fixed number of scans. */
621 if (num_scans > devpriv->ao_stop_count) {
622 num_scans = devpriv->ao_stop_count;
626 /* Determine how much room is in the FIFO (in samples). */
627 dacstat = inw(dev->iobase + PCI224_DACCON);
628 switch (dacstat & PCI224_DACCON_FIFOFL_MASK) {
629 case PCI224_DACCON_FIFOFL_EMPTY:
630 room = PCI224_FIFO_ROOM_EMPTY;
631 if (!devpriv->ao_stop_continuous
632 && devpriv->ao_stop_count == 0) {
633 /* FIFO empty at end of counted acquisition. */
634 pci224_ao_stop(dev, s);
635 s->async->events |= COMEDI_CB_EOA;
636 comedi_event(dev, s);
640 case PCI224_DACCON_FIFOFL_ONETOHALF:
641 room = PCI224_FIFO_ROOM_ONETOHALF;
643 case PCI224_DACCON_FIFOFL_HALFTOFULL:
644 room = PCI224_FIFO_ROOM_HALFTOFULL;
647 room = PCI224_FIFO_ROOM_FULL;
650 if (room >= PCI224_FIFO_ROOM_ONETOHALF) {
651 /* FIFO is less than half-full. */
652 if (num_scans == 0) {
653 /* Nothing left to put in the FIFO. */
654 pci224_ao_stop(dev, s);
655 s->async->events |= COMEDI_CB_OVERFLOW;
656 rt_printk(KERN_ERR "comedi%d: "
657 "AO buffer underrun\n", dev->minor);
660 /* Determine how many new scans can be put in the FIFO. */
661 if (cmd->chanlist_len) {
662 room /= cmd->chanlist_len;
664 /* Determine how many scans to process. */
665 if (num_scans > room) {
669 for (n = 0; n < num_scans; n++) {
670 cfc_read_array_from_buffer(s, &devpriv->ao_scan_vals[0],
672 for (i = 0; i < cmd->chanlist_len; i++) {
673 outw(devpriv->ao_scan_vals[devpriv->
675 dev->iobase + PCI224_DACDATA);
678 if (!devpriv->ao_stop_continuous) {
679 devpriv->ao_stop_count -= num_scans;
680 if (devpriv->ao_stop_count == 0) {
682 * Change FIFO interrupt trigger level to wait
683 * until FIFO is empty.
685 devpriv->daccon = COMBINE(devpriv->daccon,
686 PCI224_DACCON_FIFOINTR_EMPTY,
687 PCI224_DACCON_FIFOINTR_MASK);
688 outw(devpriv->daccon,
689 dev->iobase + PCI224_DACCON);
692 if ((devpriv->daccon & PCI224_DACCON_TRIG_MASK) ==
693 PCI224_DACCON_TRIG_NONE) {
697 * This is the initial DAC FIFO interrupt at the
698 * start of the acquisition. The DAC's scan trigger
699 * has been set to 'none' up until now.
701 * Now that data has been written to the FIFO, the
702 * DAC's scan trigger source can be set to the
705 * BUG: The first scan will be triggered immediately
706 * if the scan trigger source is at logic level 1.
708 if (cmd->scan_begin_src == TRIG_TIMER) {
709 trig = PCI224_DACCON_TRIG_Z2CT0;
711 /* cmd->scan_begin_src == TRIG_EXT */
712 if (cmd->scan_begin_arg & CR_INVERT) {
713 trig = PCI224_DACCON_TRIG_EXTN;
715 trig = PCI224_DACCON_TRIG_EXTP;
718 devpriv->daccon = COMBINE(devpriv->daccon, trig,
719 PCI224_DACCON_TRIG_MASK);
720 outw(devpriv->daccon, dev->iobase + PCI224_DACCON);
722 if (s->async->events) {
723 comedi_event(dev, s);
728 * Internal trigger function to start acquisition on AO subdevice.
731 pci224_ao_inttrig_start(struct comedi_device * dev, struct comedi_subdevice * s,
732 unsigned int trignum)
737 s->async->inttrig = NULLFUNC;
738 pci224_ao_start(dev, s);
743 #define MAX_SCAN_PERIOD 0xFFFFFFFFU
744 #define MIN_SCAN_PERIOD 2500
745 #define CONVERT_PERIOD 625
748 * 'do_cmdtest' function for AO subdevice.
751 pci224_ao_cmdtest(struct comedi_device * dev, struct comedi_subdevice * s, comedi_cmd * cmd)
756 /* Step 1: make sure trigger sources are trivially valid. */
758 tmp = cmd->start_src;
759 cmd->start_src &= TRIG_INT | TRIG_EXT;
760 if (!cmd->start_src || tmp != cmd->start_src)
763 tmp = cmd->scan_begin_src;
764 cmd->scan_begin_src &= TRIG_EXT | TRIG_TIMER;
765 if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src)
768 tmp = cmd->convert_src;
769 cmd->convert_src &= TRIG_NOW;
770 if (!cmd->convert_src || tmp != cmd->convert_src)
773 tmp = cmd->scan_end_src;
774 cmd->scan_end_src &= TRIG_COUNT;
775 if (!cmd->scan_end_src || tmp != cmd->scan_end_src)
779 cmd->stop_src &= TRIG_COUNT | TRIG_EXT | TRIG_NONE;
780 if (!cmd->stop_src || tmp != cmd->stop_src)
786 /* Step 2: make sure trigger sources are unique and mutually
789 /* these tests are true if more than one _src bit is set */
790 if ((cmd->start_src & (cmd->start_src - 1)) != 0)
792 if ((cmd->scan_begin_src & (cmd->scan_begin_src - 1)) != 0)
794 if ((cmd->convert_src & (cmd->convert_src - 1)) != 0)
796 if ((cmd->scan_end_src & (cmd->scan_end_src - 1)) != 0)
798 if ((cmd->stop_src & (cmd->stop_src - 1)) != 0)
801 /* There's only one external trigger signal (which makes these
802 * tests easier). Only one thing can use it. */
804 if (cmd->start_src & TRIG_EXT)
806 if (cmd->scan_begin_src & TRIG_EXT)
808 if (cmd->stop_src & TRIG_EXT)
816 /* Step 3: make sure arguments are trivially compatible. */
818 switch (cmd->start_src) {
820 if (cmd->start_arg != 0) {
826 /* Force to external trigger 0. */
827 if ((cmd->start_arg & ~CR_FLAGS_MASK) != 0) {
828 cmd->start_arg = COMBINE(cmd->start_arg, 0,
832 /* The only flag allowed is CR_EDGE, which is ignored. */
833 if ((cmd->start_arg & CR_FLAGS_MASK & ~CR_EDGE) != 0) {
834 cmd->start_arg = COMBINE(cmd->start_arg, 0,
835 CR_FLAGS_MASK & ~CR_EDGE);
841 switch (cmd->scan_begin_src) {
843 if (cmd->scan_begin_arg > MAX_SCAN_PERIOD) {
844 cmd->scan_begin_arg = MAX_SCAN_PERIOD;
847 tmp = cmd->chanlist_len * CONVERT_PERIOD;
848 if (tmp < MIN_SCAN_PERIOD) {
849 tmp = MIN_SCAN_PERIOD;
851 if (cmd->scan_begin_arg < tmp) {
852 cmd->scan_begin_arg = tmp;
857 /* Force to external trigger 0. */
858 if ((cmd->scan_begin_arg & ~CR_FLAGS_MASK) != 0) {
859 cmd->scan_begin_arg = COMBINE(cmd->scan_begin_arg, 0,
863 /* Only allow flags CR_EDGE and CR_INVERT. Ignore CR_EDGE. */
864 if ((cmd->scan_begin_arg & CR_FLAGS_MASK &
865 ~(CR_EDGE | CR_INVERT)) != 0) {
866 cmd->scan_begin_arg = COMBINE(cmd->scan_begin_arg, 0,
867 CR_FLAGS_MASK & ~(CR_EDGE | CR_INVERT));
873 /* cmd->convert_src == TRIG_NOW */
874 if (cmd->convert_arg != 0) {
875 cmd->convert_arg = 0;
879 /* cmd->scan_end_arg == TRIG_COUNT */
880 if (cmd->scan_end_arg != cmd->chanlist_len) {
881 cmd->scan_end_arg = cmd->chanlist_len;
885 switch (cmd->stop_src) {
887 /* Any count allowed. */
890 /* Force to external trigger 0. */
891 if ((cmd->stop_arg & ~CR_FLAGS_MASK) != 0) {
892 cmd->stop_arg = COMBINE(cmd->stop_arg, 0,
896 /* The only flag allowed is CR_EDGE, which is ignored. */
897 if ((cmd->stop_arg & CR_FLAGS_MASK & ~CR_EDGE) != 0) {
898 cmd->stop_arg = COMBINE(cmd->stop_arg, 0,
899 CR_FLAGS_MASK & ~CR_EDGE);
903 if (cmd->stop_arg != 0) {
913 /* Step 4: fix up any arguments. */
915 if (cmd->scan_begin_src == TRIG_TIMER) {
916 unsigned int div1, div2, round;
917 int round_mode = cmd->flags & TRIG_ROUND_MASK;
919 tmp = cmd->scan_begin_arg;
920 /* Check whether to use a single timer. */
921 switch (round_mode) {
922 case TRIG_ROUND_NEAREST:
924 round = TIMEBASE_10MHZ / 2;
926 case TRIG_ROUND_DOWN:
930 round = TIMEBASE_10MHZ - 1;
933 /* Be careful to avoid overflow! */
934 div2 = cmd->scan_begin_arg / TIMEBASE_10MHZ;
935 div2 += (round + cmd->scan_begin_arg % TIMEBASE_10MHZ) /
937 if (div2 <= 0x10000) {
938 /* A single timer will suffice. */
941 cmd->scan_begin_arg = div2 * TIMEBASE_10MHZ;
942 if (cmd->scan_begin_arg < div2 ||
943 cmd->scan_begin_arg < TIMEBASE_10MHZ) {
945 cmd->scan_begin_arg = MAX_SCAN_PERIOD;
948 /* Use two timers. */
949 div1 = devpriv->cached_div1;
950 div2 = devpriv->cached_div2;
951 pci224_cascade_ns_to_timer(TIMEBASE_10MHZ, &div1, &div2,
952 &cmd->scan_begin_arg, round_mode);
953 devpriv->cached_div1 = div1;
954 devpriv->cached_div2 = div2;
956 if (tmp != cmd->scan_begin_arg) {
964 /* Step 5: check channel list. */
966 if (cmd->chanlist && (cmd->chanlist_len > 0)) {
968 enum { range_err = 1, dupchan_err = 2, };
974 * Check all channels have the same range index. Don't care
975 * about analogue reference, as we can't configure it.
977 * Check the list has no duplicate channels.
979 range = CR_RANGE(cmd->chanlist[0]);
982 for (n = 0; n < cmd->chanlist_len; n++) {
983 ch = CR_CHAN(cmd->chanlist[n]);
984 if (tmp & (1U << ch)) {
985 errors |= dupchan_err;
988 if (CR_RANGE(cmd->chanlist[n]) != range) {
993 if (errors & dupchan_err) {
994 DPRINTK("comedi%d: " DRIVER_NAME
996 "entries in chanlist must contain no "
997 "duplicate channels\n", dev->minor);
999 if (errors & range_err) {
1000 DPRINTK("comedi%d: " DRIVER_NAME
1002 "entries in chanlist must all have "
1003 "the same range index\n", dev->minor);
1016 * 'do_cmd' function for AO subdevice.
1018 static int pci224_ao_cmd(struct comedi_device * dev, struct comedi_subdevice * s)
1020 comedi_cmd *cmd = &s->async->cmd;
1025 unsigned long flags;
1027 /* Cannot handle null/empty chanlist. */
1028 if (cmd->chanlist == NULL || cmd->chanlist_len == 0) {
1032 /* Determine which channels are enabled and their load order. */
1033 devpriv->ao_enab = 0;
1035 for (i = 0; i < cmd->chanlist_len; i++) {
1036 ch = CR_CHAN(cmd->chanlist[i]);
1037 devpriv->ao_enab |= 1U << ch;
1039 for (j = 0; j < cmd->chanlist_len; j++) {
1040 if (CR_CHAN(cmd->chanlist[j]) < ch) {
1044 devpriv->ao_scan_order[rank] = i;
1047 /* Set enabled channels. */
1048 outw(devpriv->ao_enab, dev->iobase + PCI224_DACCEN);
1050 /* Determine range and polarity. All channels the same. */
1051 range = CR_RANGE(cmd->chanlist[0]);
1054 * Set DAC range and polarity.
1055 * Set DAC scan trigger source to 'none'.
1056 * Set DAC FIFO interrupt trigger level to 'not half full'.
1059 * N.B. DAC FIFO interrupts are currently disabled.
1061 devpriv->daccon = COMBINE(devpriv->daccon,
1062 (devpriv->hwrange[range] | PCI224_DACCON_TRIG_NONE |
1063 PCI224_DACCON_FIFOINTR_NHALF),
1064 (PCI224_DACCON_POLAR_MASK | PCI224_DACCON_VREF_MASK |
1065 PCI224_DACCON_TRIG_MASK | PCI224_DACCON_FIFOINTR_MASK));
1066 outw(devpriv->daccon | PCI224_DACCON_FIFORESET,
1067 dev->iobase + PCI224_DACCON);
1069 if (cmd->scan_begin_src == TRIG_TIMER) {
1070 unsigned int div1, div2, round;
1071 unsigned int ns = cmd->scan_begin_arg;
1072 int round_mode = cmd->flags & TRIG_ROUND_MASK;
1074 /* Check whether to use a single timer. */
1075 switch (round_mode) {
1076 case TRIG_ROUND_NEAREST:
1078 round = TIMEBASE_10MHZ / 2;
1080 case TRIG_ROUND_DOWN:
1084 round = TIMEBASE_10MHZ - 1;
1087 /* Be careful to avoid overflow! */
1088 div2 = cmd->scan_begin_arg / TIMEBASE_10MHZ;
1089 div2 += (round + cmd->scan_begin_arg % TIMEBASE_10MHZ) /
1091 if (div2 <= 0x10000) {
1092 /* A single timer will suffice. */
1096 div1 = 1; /* Flag that single timer to be used. */
1098 /* Use two timers. */
1099 div1 = devpriv->cached_div1;
1100 div2 = devpriv->cached_div2;
1101 pci224_cascade_ns_to_timer(TIMEBASE_10MHZ, &div1, &div2,
1106 * The output of timer Z2-0 will be used as the scan trigger
1109 /* Make sure Z2-0 is gated on. */
1110 outb(GAT_CONFIG(0, GAT_VCC),
1111 devpriv->iobase1 + PCI224_ZGAT_SCE);
1113 /* Not cascading. Z2-0 needs 10 MHz clock. */
1114 outb(CLK_CONFIG(0, CLK_10MHZ),
1115 devpriv->iobase1 + PCI224_ZCLK_SCE);
1117 /* Cascading with Z2-2. */
1118 /* Make sure Z2-2 is gated on. */
1119 outb(GAT_CONFIG(2, GAT_VCC),
1120 devpriv->iobase1 + PCI224_ZGAT_SCE);
1121 /* Z2-2 needs 10 MHz clock. */
1122 outb(CLK_CONFIG(2, CLK_10MHZ),
1123 devpriv->iobase1 + PCI224_ZCLK_SCE);
1124 /* Load Z2-2 mode (2) and counter (div1). */
1125 i8254_load(devpriv->iobase1 + PCI224_Z2_CT0, 0,
1127 /* Z2-0 is clocked from Z2-2's output. */
1128 outb(CLK_CONFIG(0, CLK_OUTNM1),
1129 devpriv->iobase1 + PCI224_ZCLK_SCE);
1131 /* Load Z2-0 mode (2) and counter (div2). */
1132 i8254_load(devpriv->iobase1 + PCI224_Z2_CT0, 0, 0, div2, 2);
1136 * Sort out end of acquisition.
1138 switch (cmd->stop_src) {
1140 /* Fixed number of scans. */
1141 devpriv->ao_stop_continuous = 0;
1142 devpriv->ao_stop_count = cmd->stop_arg;
1145 /* Continuous scans. */
1146 devpriv->ao_stop_continuous = 1;
1147 devpriv->ao_stop_count = 0;
1152 * Sort out start of acquisition.
1154 switch (cmd->start_src) {
1156 comedi_spin_lock_irqsave(&devpriv->ao_spinlock, flags);
1157 s->async->inttrig = &pci224_ao_inttrig_start;
1158 comedi_spin_unlock_irqrestore(&devpriv->ao_spinlock, flags);
1161 /* Enable external interrupt trigger to start acquisition. */
1162 comedi_spin_lock_irqsave(&devpriv->ao_spinlock, flags);
1163 devpriv->intsce |= PCI224_INTR_EXT;
1164 outb(devpriv->intsce, devpriv->iobase1 + PCI224_INT_SCE);
1165 comedi_spin_unlock_irqrestore(&devpriv->ao_spinlock, flags);
1173 * 'cancel' function for AO subdevice.
1175 static int pci224_ao_cancel(struct comedi_device * dev, struct comedi_subdevice * s)
1177 pci224_ao_stop(dev, s);
1182 * 'munge' data for AO command.
1185 pci224_ao_munge(struct comedi_device * dev, struct comedi_subdevice * s, void *data,
1186 unsigned int num_bytes, unsigned int chan_index)
1188 comedi_async *async = s->async;
1189 short *array = data;
1190 unsigned int length = num_bytes / sizeof(*array);
1191 unsigned int offset;
1195 /* The hardware expects 16-bit numbers. */
1196 shift = 16 - thisboard->ao_bits;
1197 /* Channels will be all bipolar or all unipolar. */
1198 if ((devpriv->hwrange[CR_RANGE(async->cmd.chanlist[0])] &
1199 PCI224_DACCON_POLAR_MASK) == PCI224_DACCON_POLAR_UNI) {
1206 /* Munge the data. */
1207 for (i = 0; i < length; i++) {
1208 array[i] = (array[i] << shift) - offset;
1213 * Interrupt handler.
1215 static irqreturn_t pci224_interrupt(int irq, void *d PT_REGS_ARG)
1217 struct comedi_device *dev = d;
1218 struct comedi_subdevice *s = &dev->subdevices[0];
1220 unsigned char intstat, valid_intstat;
1221 unsigned char curenab;
1223 unsigned long flags;
1225 intstat = inb(devpriv->iobase1 + PCI224_INT_SCE) & 0x3F;
1228 comedi_spin_lock_irqsave(&devpriv->ao_spinlock, flags);
1229 valid_intstat = devpriv->intsce & intstat;
1230 /* Temporarily disable interrupt sources. */
1231 curenab = devpriv->intsce & ~intstat;
1232 outb(curenab, devpriv->iobase1 + PCI224_INT_SCE);
1233 devpriv->intr_running = 1;
1234 devpriv->intr_cpuid = THISCPU;
1235 comedi_spin_unlock_irqrestore(&devpriv->ao_spinlock, flags);
1236 if (valid_intstat != 0) {
1237 cmd = &s->async->cmd;
1238 if (valid_intstat & PCI224_INTR_EXT) {
1239 devpriv->intsce &= ~PCI224_INTR_EXT;
1240 if (cmd->start_src == TRIG_EXT) {
1241 pci224_ao_start(dev, s);
1242 } else if (cmd->stop_src == TRIG_EXT) {
1243 pci224_ao_stop(dev, s);
1246 if (valid_intstat & PCI224_INTR_DAC) {
1247 pci224_ao_handle_fifo(dev, s);
1250 /* Reenable interrupt sources. */
1251 comedi_spin_lock_irqsave(&devpriv->ao_spinlock, flags);
1252 if (curenab != devpriv->intsce) {
1253 outb(devpriv->intsce,
1254 devpriv->iobase1 + PCI224_INT_SCE);
1256 devpriv->intr_running = 0;
1257 comedi_spin_unlock_irqrestore(&devpriv->ao_spinlock, flags);
1259 return IRQ_RETVAL(retval);
1263 * This function looks for a PCI device matching the requested board name,
1267 pci224_find_pci(struct comedi_device * dev, int bus, int slot,
1268 struct pci_dev **pci_dev_p)
1270 struct pci_dev *pci_dev = NULL;
1274 /* Look for matching PCI device. */
1275 for (pci_dev = pci_get_device(PCI_VENDOR_ID_AMPLICON, PCI_ANY_ID, NULL);
1277 pci_dev = pci_get_device(PCI_VENDOR_ID_AMPLICON, PCI_ANY_ID,
1279 /* If bus/slot specified, check them. */
1281 if (bus != pci_dev->bus->number
1282 || slot != PCI_SLOT(pci_dev->devfn))
1285 if (thisboard->model == any_model) {
1286 /* Match any supported model. */
1289 for (i = 0; i < ARRAY_SIZE(pci224_boards); i++) {
1290 if (pci_dev->device == pci224_boards[i].devid) {
1291 /* Change board_ptr to matched board. */
1292 dev->board_ptr = &pci224_boards[i];
1296 if (i == ARRAY_SIZE(pci224_boards))
1299 /* Match specific model name. */
1300 if (thisboard->devid != pci_dev->device)
1304 /* Found a match. */
1305 *pci_dev_p = pci_dev;
1308 /* No match found. */
1310 printk(KERN_ERR "comedi%d: error! "
1311 "no %s found at pci %02x:%02x!\n",
1312 dev->minor, thisboard->name, bus, slot);
1314 printk(KERN_ERR "comedi%d: error! no %s found!\n",
1315 dev->minor, thisboard->name);
1321 * Attach is called by the Comedi core to configure the driver
1322 * for a particular board. If you specified a board_name array
1323 * in the driver structure, dev->board_ptr contains that
1326 static int pci224_attach(struct comedi_device * dev, comedi_devconfig * it)
1328 struct comedi_subdevice *s;
1329 struct pci_dev *pci_dev;
1331 int bus = 0, slot = 0;
1335 printk(KERN_DEBUG "comedi%d: %s: attach\n", dev->minor, DRIVER_NAME);
1337 bus = it->options[0];
1338 slot = it->options[1];
1339 if ((ret = alloc_private(dev, sizeof(pci224_private))) < 0) {
1340 printk(KERN_ERR "comedi%d: error! out of memory!\n",
1344 if ((ret = pci224_find_pci(dev, bus, slot, &pci_dev)) < 0)
1346 devpriv->pci_dev = pci_dev;
1348 if ((ret = comedi_pci_enable(pci_dev, DRIVER_NAME)) < 0) {
1350 "comedi%d: error! cannot enable PCI device "
1351 "and request regions!\n", dev->minor);
1354 spin_lock_init(&devpriv->ao_spinlock);
1356 devpriv->iobase1 = pci_resource_start(pci_dev, 2);
1357 dev->iobase = pci_resource_start(pci_dev, 3);
1360 /* Allocate readback buffer for AO channels. */
1361 devpriv->ao_readback = kmalloc(sizeof(devpriv->ao_readback[0]) *
1362 thisboard->ao_chans, GFP_KERNEL);
1363 if (!devpriv->ao_readback) {
1367 /* Allocate buffer to hold values for AO channel scan. */
1368 devpriv->ao_scan_vals = kmalloc(sizeof(devpriv->ao_scan_vals[0]) *
1369 thisboard->ao_chans, GFP_KERNEL);
1370 if (!devpriv->ao_scan_vals) {
1374 /* Allocate buffer to hold AO channel scan order. */
1375 devpriv->ao_scan_order = kmalloc(sizeof(devpriv->ao_scan_order[0]) *
1376 thisboard->ao_chans, GFP_KERNEL);
1377 if (!devpriv->ao_scan_order) {
1381 /* Disable interrupt sources. */
1382 devpriv->intsce = 0;
1383 outb(0, devpriv->iobase1 + PCI224_INT_SCE);
1385 /* Initialize the DAC hardware. */
1386 outw(PCI224_DACCON_GLOBALRESET, dev->iobase + PCI224_DACCON);
1387 outw(0, dev->iobase + PCI224_DACCEN);
1388 outw(0, dev->iobase + PCI224_FIFOSIZ);
1389 devpriv->daccon = (PCI224_DACCON_TRIG_SW | PCI224_DACCON_POLAR_BI |
1390 PCI224_DACCON_FIFOENAB | PCI224_DACCON_FIFOINTR_EMPTY);
1391 outw(devpriv->daccon | PCI224_DACCON_FIFORESET,
1392 dev->iobase + PCI224_DACCON);
1394 /* Allocate subdevices. There is only one! */
1395 if ((ret = alloc_subdevices(dev, 1)) < 0) {
1396 printk(KERN_ERR "comedi%d: error! out of memory!\n",
1401 s = dev->subdevices + 0;
1402 /* Analog output subdevice. */
1403 s->type = COMEDI_SUBD_AO;
1404 s->subdev_flags = SDF_WRITABLE | SDF_GROUND | SDF_CMD_WRITE;
1405 s->n_chan = thisboard->ao_chans;
1406 s->maxdata = (1 << thisboard->ao_bits) - 1;
1407 s->insn_write = &pci224_ao_insn_write;
1408 s->insn_read = &pci224_ao_insn_read;
1409 s->len_chanlist = s->n_chan;
1411 dev->write_subdev = s;
1412 s->do_cmd = &pci224_ao_cmd;
1413 s->do_cmdtest = &pci224_ao_cmdtest;
1414 s->cancel = &pci224_ao_cancel;
1415 s->munge = &pci224_ao_munge;
1417 /* Sort out channel range options. */
1418 if (thisboard->model == pci234_model) {
1419 /* PCI234 range options. */
1420 const comedi_lrange **range_table_list;
1422 s->range_table_list = range_table_list =
1423 kmalloc(sizeof(comedi_lrange *) * s->n_chan,
1425 if (!s->range_table_list) {
1428 for (n = 2; n < 3 + s->n_chan; n++) {
1429 if (it->options[n] < 0 || it->options[n] > 1) {
1430 printk(KERN_WARNING "comedi%d: %s: warning! "
1431 "bad options[%u]=%d\n",
1432 dev->minor, DRIVER_NAME, n,
1436 for (n = 0; n < s->n_chan; n++) {
1437 if (n < COMEDI_NDEVCONFOPTS - 3 &&
1438 it->options[3 + n] == 1) {
1439 if (it->options[2] == 1) {
1440 range_table_list[n] = &range_pci234_ext;
1442 range_table_list[n] = &range_bipolar5;
1445 if (it->options[2] == 1) {
1446 range_table_list[n] =
1449 range_table_list[n] = &range_bipolar10;
1453 devpriv->hwrange = hwrange_pci234;
1455 /* PCI224 range options. */
1456 if (it->options[2] == 1) {
1457 s->range_table = &range_pci224_external;
1458 devpriv->hwrange = hwrange_pci224_external;
1460 if (it->options[2] != 0) {
1461 printk(KERN_WARNING "comedi%d: %s: warning! "
1462 "bad options[2]=%d\n",
1463 dev->minor, DRIVER_NAME,
1466 s->range_table = &range_pci224_internal;
1467 devpriv->hwrange = hwrange_pci224_internal;
1471 dev->board_name = thisboard->name;
1474 ret = comedi_request_irq(irq, pci224_interrupt, IRQF_SHARED,
1477 printk(KERN_ERR "comedi%d: error! "
1478 "unable to allocate irq %u\n", dev->minor, irq);
1485 printk(KERN_INFO "comedi%d: %s ", dev->minor, dev->board_name);
1486 printk("(pci %s) ", pci_name(pci_dev));
1488 printk("(irq %u%s) ", irq, (dev->irq ? "" : " UNAVAILABLE"));
1490 printk("(no irq) ");
1493 printk("attached\n");
1499 * _detach is called to deconfigure a device. It should deallocate
1501 * This function is also called when _attach() fails, so it should be
1502 * careful not to release resources that were not necessarily
1503 * allocated by _attach(). dev->private and dev->subdevices are
1504 * deallocated automatically by the core.
1506 static int pci224_detach(struct comedi_device * dev)
1508 printk(KERN_DEBUG "comedi%d: %s: detach\n", dev->minor, DRIVER_NAME);
1511 comedi_free_irq(dev->irq, dev);
1513 if (dev->subdevices) {
1514 struct comedi_subdevice *s;
1516 s = dev->subdevices + 0;
1518 if (s->range_table_list) {
1519 kfree(s->range_table_list);
1523 if (devpriv->ao_readback) {
1524 kfree(devpriv->ao_readback);
1526 if (devpriv->ao_scan_vals) {
1527 kfree(devpriv->ao_scan_vals);
1529 if (devpriv->ao_scan_order) {
1530 kfree(devpriv->ao_scan_order);
1532 if (devpriv->pci_dev) {
1534 comedi_pci_disable(devpriv->pci_dev);
1536 pci_dev_put(devpriv->pci_dev);
1539 if (dev->board_name) {
1540 printk(KERN_INFO "comedi%d: %s removed\n",
1541 dev->minor, dev->board_name);