1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * ni_65xx.c
4 * Comedi driver for National Instruments PCI-65xx static dio boards
5 *
6 * Copyright (C) 2006 Jon Grierson <jd@renko.co.uk>
7 * Copyright (C) 2006 Frank Mori Hess <fmhess@users.sourceforge.net>
8 *
9 * COMEDI - Linux Control and Measurement Device Interface
10 * Copyright (C) 1999,2002,2003 David A. Schleef <ds@schleef.org>
11 */
12
13 /*
14 * Driver: ni_65xx
15 * Description: National Instruments 65xx static dio boards
16 * Author: Jon Grierson <jd@renko.co.uk>,
17 * Frank Mori Hess <fmhess@users.sourceforge.net>
18 * Status: testing
19 * Devices: [National Instruments] PCI-6509 (pci-6509), PXI-6509 (pxi-6509),
20 * PCI-6510 (pci-6510), PCI-6511 (pci-6511), PXI-6511 (pxi-6511),
21 * PCI-6512 (pci-6512), PXI-6512 (pxi-6512), PCI-6513 (pci-6513),
22 * PXI-6513 (pxi-6513), PCI-6514 (pci-6514), PXI-6514 (pxi-6514),
23 * PCI-6515 (pxi-6515), PXI-6515 (pxi-6515), PCI-6516 (pci-6516),
24 * PCI-6517 (pci-6517), PCI-6518 (pci-6518), PCI-6519 (pci-6519),
25 * PCI-6520 (pci-6520), PCI-6521 (pci-6521), PXI-6521 (pxi-6521),
26 * PCI-6528 (pci-6528), PXI-6528 (pxi-6528)
27 * Updated: Mon, 21 Jul 2014 12:49:58 +0000
28 *
29 * Configuration Options: not applicable, uses PCI auto config
30 *
31 * Based on the PCI-6527 driver by ds.
32 * The interrupt subdevice (subdevice 3) is probably broken for all
33 * boards except maybe the 6514.
34 *
35 * This driver previously inverted the outputs on PCI-6513 through to
36 * PCI-6519 and on PXI-6513 through to PXI-6515. It no longer inverts
37 * outputs on those cards by default as it didn't make much sense. If
38 * you require the outputs to be inverted on those cards for legacy
39 * reasons, set the module parameter "legacy_invert_outputs=true" when
40 * loading the module, or set "ni_65xx.legacy_invert_outputs=true" on
41 * the kernel command line if the driver is built in to the kernel.
42 */
43
44 /*
45 * Manuals (available from ftp://ftp.natinst.com/support/manuals)
46 *
47 * 370106b.pdf 6514 Register Level Programmer Manual
48 */
49
50 #include <linux/module.h>
51 #include <linux/interrupt.h>
52 #include <linux/comedi/comedi_pci.h>
53
54 /*
55 * PCI BAR1 Register Map
56 */
57
58 /* Non-recurring Registers (8-bit except where noted) */
59 #define NI_65XX_ID_REG 0x00
60 #define NI_65XX_CLR_REG 0x01
61 #define NI_65XX_CLR_WDOG_INT BIT(6)
62 #define NI_65XX_CLR_WDOG_PING BIT(5)
63 #define NI_65XX_CLR_WDOG_EXP BIT(4)
64 #define NI_65XX_CLR_EDGE_INT BIT(3)
65 #define NI_65XX_CLR_OVERFLOW_INT BIT(2)
66 #define NI_65XX_STATUS_REG 0x02
67 #define NI_65XX_STATUS_WDOG_INT BIT(5)
68 #define NI_65XX_STATUS_FALL_EDGE BIT(4)
69 #define NI_65XX_STATUS_RISE_EDGE BIT(3)
70 #define NI_65XX_STATUS_INT BIT(2)
71 #define NI_65XX_STATUS_OVERFLOW_INT BIT(1)
72 #define NI_65XX_STATUS_EDGE_INT BIT(0)
73 #define NI_65XX_CTRL_REG 0x03
74 #define NI_65XX_CTRL_WDOG_ENA BIT(5)
75 #define NI_65XX_CTRL_FALL_EDGE_ENA BIT(4)
76 #define NI_65XX_CTRL_RISE_EDGE_ENA BIT(3)
77 #define NI_65XX_CTRL_INT_ENA BIT(2)
78 #define NI_65XX_CTRL_OVERFLOW_ENA BIT(1)
79 #define NI_65XX_CTRL_EDGE_ENA BIT(0)
80 #define NI_65XX_REV_REG 0x04 /* 32-bit */
81 #define NI_65XX_FILTER_REG 0x08 /* 32-bit */
82 #define NI_65XX_RTSI_ROUTE_REG 0x0c /* 16-bit */
83 #define NI_65XX_RTSI_EDGE_REG 0x0e /* 16-bit */
84 #define NI_65XX_RTSI_WDOG_REG 0x10 /* 16-bit */
85 #define NI_65XX_RTSI_TRIG_REG 0x12 /* 16-bit */
86 #define NI_65XX_AUTO_CLK_SEL_REG 0x14 /* PXI-6528 only */
87 #define NI_65XX_AUTO_CLK_SEL_STATUS BIT(1)
88 #define NI_65XX_AUTO_CLK_SEL_DISABLE BIT(0)
89 #define NI_65XX_WDOG_CTRL_REG 0x15
90 #define NI_65XX_WDOG_CTRL_ENA BIT(0)
91 #define NI_65XX_RTSI_CFG_REG 0x16
92 #define NI_65XX_RTSI_CFG_RISE_SENSE BIT(2)
93 #define NI_65XX_RTSI_CFG_FALL_SENSE BIT(1)
94 #define NI_65XX_RTSI_CFG_SYNC_DETECT BIT(0)
95 #define NI_65XX_WDOG_STATUS_REG 0x17
96 #define NI_65XX_WDOG_STATUS_EXP BIT(0)
97 #define NI_65XX_WDOG_INTERVAL_REG 0x18 /* 32-bit */
98
99 /* Recurring port registers (8-bit) */
100 #define NI_65XX_PORT(x) ((x) * 0x10)
101 #define NI_65XX_IO_DATA_REG(x) (0x40 + NI_65XX_PORT(x))
102 #define NI_65XX_IO_SEL_REG(x) (0x41 + NI_65XX_PORT(x))
103 #define NI_65XX_IO_SEL_OUTPUT 0
104 #define NI_65XX_IO_SEL_INPUT BIT(0)
105 #define NI_65XX_RISE_EDGE_ENA_REG(x) (0x42 + NI_65XX_PORT(x))
106 #define NI_65XX_FALL_EDGE_ENA_REG(x) (0x43 + NI_65XX_PORT(x))
107 #define NI_65XX_FILTER_ENA(x) (0x44 + NI_65XX_PORT(x))
108 #define NI_65XX_WDOG_HIZ_REG(x) (0x46 + NI_65XX_PORT(x))
109 #define NI_65XX_WDOG_ENA(x) (0x47 + NI_65XX_PORT(x))
110 #define NI_65XX_WDOG_HI_LO_REG(x) (0x48 + NI_65XX_PORT(x))
111 #define NI_65XX_RTSI_ENA(x) (0x49 + NI_65XX_PORT(x))
112
113 #define NI_65XX_PORT_TO_CHAN(x) ((x) * 8)
114 #define NI_65XX_CHAN_TO_PORT(x) ((x) / 8)
115 #define NI_65XX_CHAN_TO_MASK(x) (1 << ((x) % 8))
116
117 enum ni_65xx_boardid {
118 BOARD_PCI6509,
119 BOARD_PXI6509,
120 BOARD_PCI6510,
121 BOARD_PCI6511,
122 BOARD_PXI6511,
123 BOARD_PCI6512,
124 BOARD_PXI6512,
125 BOARD_PCI6513,
126 BOARD_PXI6513,
127 BOARD_PCI6514,
128 BOARD_PXI6514,
129 BOARD_PCI6515,
130 BOARD_PXI6515,
131 BOARD_PCI6516,
132 BOARD_PCI6517,
133 BOARD_PCI6518,
134 BOARD_PCI6519,
135 BOARD_PCI6520,
136 BOARD_PCI6521,
137 BOARD_PXI6521,
138 BOARD_PCI6528,
139 BOARD_PXI6528,
140 };
141
142 struct ni_65xx_board {
143 const char *name;
144 unsigned int num_dio_ports;
145 unsigned int num_di_ports;
146 unsigned int num_do_ports;
147 unsigned int legacy_invert:1;
148 };
149
150 static const struct ni_65xx_board ni_65xx_boards[] = {
151 [BOARD_PCI6509] = {
152 .name = "pci-6509",
153 .num_dio_ports = 12,
154 },
155 [BOARD_PXI6509] = {
156 .name = "pxi-6509",
157 .num_dio_ports = 12,
158 },
159 [BOARD_PCI6510] = {
160 .name = "pci-6510",
161 .num_di_ports = 4,
162 },
163 [BOARD_PCI6511] = {
164 .name = "pci-6511",
165 .num_di_ports = 8,
166 },
167 [BOARD_PXI6511] = {
168 .name = "pxi-6511",
169 .num_di_ports = 8,
170 },
171 [BOARD_PCI6512] = {
172 .name = "pci-6512",
173 .num_do_ports = 8,
174 },
175 [BOARD_PXI6512] = {
176 .name = "pxi-6512",
177 .num_do_ports = 8,
178 },
179 [BOARD_PCI6513] = {
180 .name = "pci-6513",
181 .num_do_ports = 8,
182 .legacy_invert = 1,
183 },
184 [BOARD_PXI6513] = {
185 .name = "pxi-6513",
186 .num_do_ports = 8,
187 .legacy_invert = 1,
188 },
189 [BOARD_PCI6514] = {
190 .name = "pci-6514",
191 .num_di_ports = 4,
192 .num_do_ports = 4,
193 .legacy_invert = 1,
194 },
195 [BOARD_PXI6514] = {
196 .name = "pxi-6514",
197 .num_di_ports = 4,
198 .num_do_ports = 4,
199 .legacy_invert = 1,
200 },
201 [BOARD_PCI6515] = {
202 .name = "pci-6515",
203 .num_di_ports = 4,
204 .num_do_ports = 4,
205 .legacy_invert = 1,
206 },
207 [BOARD_PXI6515] = {
208 .name = "pxi-6515",
209 .num_di_ports = 4,
210 .num_do_ports = 4,
211 .legacy_invert = 1,
212 },
213 [BOARD_PCI6516] = {
214 .name = "pci-6516",
215 .num_do_ports = 4,
216 .legacy_invert = 1,
217 },
218 [BOARD_PCI6517] = {
219 .name = "pci-6517",
220 .num_do_ports = 4,
221 .legacy_invert = 1,
222 },
223 [BOARD_PCI6518] = {
224 .name = "pci-6518",
225 .num_di_ports = 2,
226 .num_do_ports = 2,
227 .legacy_invert = 1,
228 },
229 [BOARD_PCI6519] = {
230 .name = "pci-6519",
231 .num_di_ports = 2,
232 .num_do_ports = 2,
233 .legacy_invert = 1,
234 },
235 [BOARD_PCI6520] = {
236 .name = "pci-6520",
237 .num_di_ports = 1,
238 .num_do_ports = 1,
239 },
240 [BOARD_PCI6521] = {
241 .name = "pci-6521",
242 .num_di_ports = 1,
243 .num_do_ports = 1,
244 },
245 [BOARD_PXI6521] = {
246 .name = "pxi-6521",
247 .num_di_ports = 1,
248 .num_do_ports = 1,
249 },
250 [BOARD_PCI6528] = {
251 .name = "pci-6528",
252 .num_di_ports = 3,
253 .num_do_ports = 3,
254 },
255 [BOARD_PXI6528] = {
256 .name = "pxi-6528",
257 .num_di_ports = 3,
258 .num_do_ports = 3,
259 },
260 };
261
262 static bool ni_65xx_legacy_invert_outputs;
263 module_param_named(legacy_invert_outputs, ni_65xx_legacy_invert_outputs,
264 bool, 0444);
265 MODULE_PARM_DESC(legacy_invert_outputs,
266 "invert outputs of PCI/PXI-6513/6514/6515/6516/6517/6518/6519 for compatibility with old user code");
267
ni_65xx_num_ports(struct comedi_device * dev)268 static unsigned int ni_65xx_num_ports(struct comedi_device *dev)
269 {
270 const struct ni_65xx_board *board = dev->board_ptr;
271
272 return board->num_dio_ports + board->num_di_ports + board->num_do_ports;
273 }
274
ni_65xx_disable_input_filters(struct comedi_device * dev)275 static void ni_65xx_disable_input_filters(struct comedi_device *dev)
276 {
277 unsigned int num_ports = ni_65xx_num_ports(dev);
278 int i;
279
280 /* disable input filtering on all ports */
281 for (i = 0; i < num_ports; ++i)
282 writeb(0x00, dev->mmio + NI_65XX_FILTER_ENA(i));
283
284 /* set filter interval to 0 (32bit reg) */
285 writel(0x00000000, dev->mmio + NI_65XX_FILTER_REG);
286 }
287
288 /* updates edge detection for base_chan to base_chan+31 */
ni_65xx_update_edge_detection(struct comedi_device * dev,unsigned int base_chan,unsigned int rising,unsigned int falling)289 static void ni_65xx_update_edge_detection(struct comedi_device *dev,
290 unsigned int base_chan,
291 unsigned int rising,
292 unsigned int falling)
293 {
294 unsigned int num_ports = ni_65xx_num_ports(dev);
295 unsigned int port;
296
297 if (base_chan >= NI_65XX_PORT_TO_CHAN(num_ports))
298 return;
299
300 for (port = NI_65XX_CHAN_TO_PORT(base_chan); port < num_ports; port++) {
301 int bitshift = (int)(NI_65XX_PORT_TO_CHAN(port) - base_chan);
302 unsigned int port_mask, port_rising, port_falling;
303
304 if (bitshift >= 32)
305 break;
306
307 if (bitshift >= 0) {
308 port_mask = ~0U >> bitshift;
309 port_rising = rising >> bitshift;
310 port_falling = falling >> bitshift;
311 } else {
312 port_mask = ~0U << -bitshift;
313 port_rising = rising << -bitshift;
314 port_falling = falling << -bitshift;
315 }
316 if (port_mask & 0xff) {
317 if (~port_mask & 0xff) {
318 port_rising |=
319 readb(dev->mmio +
320 NI_65XX_RISE_EDGE_ENA_REG(port)) &
321 ~port_mask;
322 port_falling |=
323 readb(dev->mmio +
324 NI_65XX_FALL_EDGE_ENA_REG(port)) &
325 ~port_mask;
326 }
327 writeb(port_rising & 0xff,
328 dev->mmio + NI_65XX_RISE_EDGE_ENA_REG(port));
329 writeb(port_falling & 0xff,
330 dev->mmio + NI_65XX_FALL_EDGE_ENA_REG(port));
331 }
332 }
333 }
334
ni_65xx_disable_edge_detection(struct comedi_device * dev)335 static void ni_65xx_disable_edge_detection(struct comedi_device *dev)
336 {
337 /* clear edge detection for channels 0 to 31 */
338 ni_65xx_update_edge_detection(dev, 0, 0, 0);
339 /* clear edge detection for channels 32 to 63 */
340 ni_65xx_update_edge_detection(dev, 32, 0, 0);
341 /* clear edge detection for channels 64 to 95 */
342 ni_65xx_update_edge_detection(dev, 64, 0, 0);
343 }
344
ni_65xx_dio_insn_config(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)345 static int ni_65xx_dio_insn_config(struct comedi_device *dev,
346 struct comedi_subdevice *s,
347 struct comedi_insn *insn,
348 unsigned int *data)
349 {
350 unsigned long base_port = (unsigned long)s->private;
351 unsigned int chan = CR_CHAN(insn->chanspec);
352 unsigned int chan_mask = NI_65XX_CHAN_TO_MASK(chan);
353 unsigned int port = base_port + NI_65XX_CHAN_TO_PORT(chan);
354 unsigned int interval;
355 unsigned int val;
356
357 switch (data[0]) {
358 case INSN_CONFIG_FILTER:
359 /*
360 * The deglitch filter interval is specified in nanoseconds.
361 * The hardware supports intervals in 200ns increments. Round
362 * the user values up and return the actual interval.
363 */
364 interval = (data[1] + 100) / 200;
365 if (interval > 0xfffff)
366 interval = 0xfffff;
367 data[1] = interval * 200;
368
369 /*
370 * Enable/disable the channel for deglitch filtering. Note
371 * that the filter interval is never set to '0'. This is done
372 * because other channels might still be enabled for filtering.
373 */
374 val = readb(dev->mmio + NI_65XX_FILTER_ENA(port));
375 if (interval) {
376 writel(interval, dev->mmio + NI_65XX_FILTER_REG);
377 val |= chan_mask;
378 } else {
379 val &= ~chan_mask;
380 }
381 writeb(val, dev->mmio + NI_65XX_FILTER_ENA(port));
382 break;
383
384 case INSN_CONFIG_DIO_OUTPUT:
385 if (s->type != COMEDI_SUBD_DIO)
386 return -EINVAL;
387 writeb(NI_65XX_IO_SEL_OUTPUT,
388 dev->mmio + NI_65XX_IO_SEL_REG(port));
389 break;
390
391 case INSN_CONFIG_DIO_INPUT:
392 if (s->type != COMEDI_SUBD_DIO)
393 return -EINVAL;
394 writeb(NI_65XX_IO_SEL_INPUT,
395 dev->mmio + NI_65XX_IO_SEL_REG(port));
396 break;
397
398 case INSN_CONFIG_DIO_QUERY:
399 if (s->type != COMEDI_SUBD_DIO)
400 return -EINVAL;
401 val = readb(dev->mmio + NI_65XX_IO_SEL_REG(port));
402 data[1] = (val == NI_65XX_IO_SEL_INPUT) ? COMEDI_INPUT
403 : COMEDI_OUTPUT;
404 break;
405
406 default:
407 return -EINVAL;
408 }
409
410 return insn->n;
411 }
412
ni_65xx_dio_insn_bits(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)413 static int ni_65xx_dio_insn_bits(struct comedi_device *dev,
414 struct comedi_subdevice *s,
415 struct comedi_insn *insn,
416 unsigned int *data)
417 {
418 unsigned long base_port = (unsigned long)s->private;
419 unsigned int base_chan = CR_CHAN(insn->chanspec);
420 int last_port_offset = NI_65XX_CHAN_TO_PORT(s->n_chan - 1);
421 unsigned int read_bits = 0;
422 int port_offset;
423
424 for (port_offset = NI_65XX_CHAN_TO_PORT(base_chan);
425 port_offset <= last_port_offset; port_offset++) {
426 unsigned int port = base_port + port_offset;
427 int base_port_channel = NI_65XX_PORT_TO_CHAN(port_offset);
428 unsigned int port_mask, port_data, bits;
429 int bitshift = base_port_channel - base_chan;
430
431 if (bitshift >= 32)
432 break;
433 port_mask = data[0];
434 port_data = data[1];
435 if (bitshift > 0) {
436 port_mask >>= bitshift;
437 port_data >>= bitshift;
438 } else {
439 port_mask <<= -bitshift;
440 port_data <<= -bitshift;
441 }
442 port_mask &= 0xff;
443 port_data &= 0xff;
444
445 /* update the outputs */
446 if (port_mask) {
447 bits = readb(dev->mmio + NI_65XX_IO_DATA_REG(port));
448 bits ^= s->io_bits; /* invert if necessary */
449 bits &= ~port_mask;
450 bits |= (port_data & port_mask);
451 bits ^= s->io_bits; /* invert back */
452 writeb(bits, dev->mmio + NI_65XX_IO_DATA_REG(port));
453 }
454
455 /* read back the actual state */
456 bits = readb(dev->mmio + NI_65XX_IO_DATA_REG(port));
457 bits ^= s->io_bits; /* invert if necessary */
458 if (bitshift > 0)
459 bits <<= bitshift;
460 else
461 bits >>= -bitshift;
462
463 read_bits |= bits;
464 }
465 data[1] = read_bits;
466 return insn->n;
467 }
468
ni_65xx_interrupt(int irq,void * d)469 static irqreturn_t ni_65xx_interrupt(int irq, void *d)
470 {
471 struct comedi_device *dev = d;
472 struct comedi_subdevice *s = dev->read_subdev;
473 unsigned int status;
474 unsigned short val = 0;
475
476 status = readb(dev->mmio + NI_65XX_STATUS_REG);
477 if ((status & NI_65XX_STATUS_INT) == 0)
478 return IRQ_NONE;
479 if ((status & NI_65XX_STATUS_EDGE_INT) == 0)
480 return IRQ_NONE;
481
482 writeb(NI_65XX_CLR_EDGE_INT | NI_65XX_CLR_OVERFLOW_INT,
483 dev->mmio + NI_65XX_CLR_REG);
484
485 comedi_buf_write_samples(s, &val, 1);
486 comedi_handle_events(dev, s);
487
488 return IRQ_HANDLED;
489 }
490
ni_65xx_intr_cmdtest(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_cmd * cmd)491 static int ni_65xx_intr_cmdtest(struct comedi_device *dev,
492 struct comedi_subdevice *s,
493 struct comedi_cmd *cmd)
494 {
495 int err = 0;
496
497 /* Step 1 : check if triggers are trivially valid */
498
499 err |= comedi_check_trigger_src(&cmd->start_src, TRIG_NOW);
500 err |= comedi_check_trigger_src(&cmd->scan_begin_src, TRIG_OTHER);
501 err |= comedi_check_trigger_src(&cmd->convert_src, TRIG_FOLLOW);
502 err |= comedi_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
503 err |= comedi_check_trigger_src(&cmd->stop_src, TRIG_COUNT);
504
505 if (err)
506 return 1;
507
508 /* Step 2a : make sure trigger sources are unique */
509 /* Step 2b : and mutually compatible */
510
511 /* Step 3: check if arguments are trivially valid */
512
513 err |= comedi_check_trigger_arg_is(&cmd->start_arg, 0);
514 err |= comedi_check_trigger_arg_is(&cmd->scan_begin_arg, 0);
515 err |= comedi_check_trigger_arg_is(&cmd->convert_arg, 0);
516 err |= comedi_check_trigger_arg_is(&cmd->scan_end_arg,
517 cmd->chanlist_len);
518 err |= comedi_check_trigger_arg_is(&cmd->stop_arg, 0);
519
520 if (err)
521 return 3;
522
523 /* Step 4: fix up any arguments */
524
525 /* Step 5: check channel list if it exists */
526
527 return 0;
528 }
529
ni_65xx_intr_cmd(struct comedi_device * dev,struct comedi_subdevice * s)530 static int ni_65xx_intr_cmd(struct comedi_device *dev,
531 struct comedi_subdevice *s)
532 {
533 writeb(NI_65XX_CLR_EDGE_INT | NI_65XX_CLR_OVERFLOW_INT,
534 dev->mmio + NI_65XX_CLR_REG);
535 writeb(NI_65XX_CTRL_FALL_EDGE_ENA | NI_65XX_CTRL_RISE_EDGE_ENA |
536 NI_65XX_CTRL_INT_ENA | NI_65XX_CTRL_EDGE_ENA,
537 dev->mmio + NI_65XX_CTRL_REG);
538
539 return 0;
540 }
541
ni_65xx_intr_cancel(struct comedi_device * dev,struct comedi_subdevice * s)542 static int ni_65xx_intr_cancel(struct comedi_device *dev,
543 struct comedi_subdevice *s)
544 {
545 writeb(0x00, dev->mmio + NI_65XX_CTRL_REG);
546
547 return 0;
548 }
549
ni_65xx_intr_insn_bits(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)550 static int ni_65xx_intr_insn_bits(struct comedi_device *dev,
551 struct comedi_subdevice *s,
552 struct comedi_insn *insn,
553 unsigned int *data)
554 {
555 data[1] = 0;
556 return insn->n;
557 }
558
ni_65xx_intr_insn_config(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)559 static int ni_65xx_intr_insn_config(struct comedi_device *dev,
560 struct comedi_subdevice *s,
561 struct comedi_insn *insn,
562 unsigned int *data)
563 {
564 switch (data[0]) {
565 case INSN_CONFIG_CHANGE_NOTIFY:
566 /* add instruction to check_insn_config_length() */
567 if (insn->n != 3)
568 return -EINVAL;
569
570 /* update edge detection for channels 0 to 31 */
571 ni_65xx_update_edge_detection(dev, 0, data[1], data[2]);
572 /* clear edge detection for channels 32 to 63 */
573 ni_65xx_update_edge_detection(dev, 32, 0, 0);
574 /* clear edge detection for channels 64 to 95 */
575 ni_65xx_update_edge_detection(dev, 64, 0, 0);
576 break;
577 case INSN_CONFIG_DIGITAL_TRIG:
578 /* check trigger number */
579 if (data[1] != 0)
580 return -EINVAL;
581 /* check digital trigger operation */
582 switch (data[2]) {
583 case COMEDI_DIGITAL_TRIG_DISABLE:
584 ni_65xx_disable_edge_detection(dev);
585 break;
586 case COMEDI_DIGITAL_TRIG_ENABLE_EDGES:
587 /*
588 * update edge detection for channels data[3]
589 * to (data[3] + 31)
590 */
591 ni_65xx_update_edge_detection(dev, data[3],
592 data[4], data[5]);
593 break;
594 default:
595 return -EINVAL;
596 }
597 break;
598 default:
599 return -EINVAL;
600 }
601
602 return insn->n;
603 }
604
605 /* ripped from mite.h and mite_setup2() to avoid mite dependency */
606 #define MITE_IODWBSR 0xc0 /* IO Device Window Base Size Register */
607 #define WENAB BIT(7) /* window enable */
608
ni_65xx_mite_init(struct pci_dev * pcidev)609 static int ni_65xx_mite_init(struct pci_dev *pcidev)
610 {
611 void __iomem *mite_base;
612 u32 main_phys_addr;
613
614 /* ioremap the MITE registers (BAR 0) temporarily */
615 mite_base = pci_ioremap_bar(pcidev, 0);
616 if (!mite_base)
617 return -ENOMEM;
618
619 /* set data window to main registers (BAR 1) */
620 main_phys_addr = pci_resource_start(pcidev, 1);
621 writel(main_phys_addr | WENAB, mite_base + MITE_IODWBSR);
622
623 /* finished with MITE registers */
624 iounmap(mite_base);
625 return 0;
626 }
627
ni_65xx_auto_attach(struct comedi_device * dev,unsigned long context)628 static int ni_65xx_auto_attach(struct comedi_device *dev,
629 unsigned long context)
630 {
631 struct pci_dev *pcidev = comedi_to_pci_dev(dev);
632 const struct ni_65xx_board *board = NULL;
633 struct comedi_subdevice *s;
634 unsigned int i;
635 int ret;
636
637 if (context < ARRAY_SIZE(ni_65xx_boards))
638 board = &ni_65xx_boards[context];
639 if (!board)
640 return -ENODEV;
641 dev->board_ptr = board;
642 dev->board_name = board->name;
643
644 ret = comedi_pci_enable(dev);
645 if (ret)
646 return ret;
647
648 ret = ni_65xx_mite_init(pcidev);
649 if (ret)
650 return ret;
651
652 dev->mmio = pci_ioremap_bar(pcidev, 1);
653 if (!dev->mmio)
654 return -ENOMEM;
655
656 writeb(NI_65XX_CLR_EDGE_INT | NI_65XX_CLR_OVERFLOW_INT,
657 dev->mmio + NI_65XX_CLR_REG);
658 writeb(0x00, dev->mmio + NI_65XX_CTRL_REG);
659
660 if (pcidev->irq) {
661 ret = request_irq(pcidev->irq, ni_65xx_interrupt, IRQF_SHARED,
662 dev->board_name, dev);
663 if (ret == 0)
664 dev->irq = pcidev->irq;
665 }
666
667 dev_info(dev->class_dev, "board: %s, ID=0x%02x", dev->board_name,
668 readb(dev->mmio + NI_65XX_ID_REG));
669
670 ret = comedi_alloc_subdevices(dev, 4);
671 if (ret)
672 return ret;
673
674 s = &dev->subdevices[0];
675 if (board->num_di_ports) {
676 s->type = COMEDI_SUBD_DI;
677 s->subdev_flags = SDF_READABLE;
678 s->n_chan = NI_65XX_PORT_TO_CHAN(board->num_di_ports);
679 s->maxdata = 1;
680 s->range_table = &range_digital;
681 s->insn_bits = ni_65xx_dio_insn_bits;
682 s->insn_config = ni_65xx_dio_insn_config;
683
684 /* the input ports always start at port 0 */
685 s->private = (void *)0;
686 } else {
687 s->type = COMEDI_SUBD_UNUSED;
688 }
689
690 s = &dev->subdevices[1];
691 if (board->num_do_ports) {
692 s->type = COMEDI_SUBD_DO;
693 s->subdev_flags = SDF_WRITABLE;
694 s->n_chan = NI_65XX_PORT_TO_CHAN(board->num_do_ports);
695 s->maxdata = 1;
696 s->range_table = &range_digital;
697 s->insn_bits = ni_65xx_dio_insn_bits;
698
699 /* the output ports always start after the input ports */
700 s->private = (void *)(unsigned long)board->num_di_ports;
701
702 /*
703 * Use the io_bits to handle the inverted outputs. Inverted
704 * outputs are only supported if the "legacy_invert_outputs"
705 * module parameter is set to "true".
706 */
707 if (ni_65xx_legacy_invert_outputs && board->legacy_invert)
708 s->io_bits = 0xff;
709
710 /* reset all output ports to comedi '0' */
711 for (i = 0; i < board->num_do_ports; ++i) {
712 writeb(s->io_bits, /* inverted if necessary */
713 dev->mmio +
714 NI_65XX_IO_DATA_REG(board->num_di_ports + i));
715 }
716 } else {
717 s->type = COMEDI_SUBD_UNUSED;
718 }
719
720 s = &dev->subdevices[2];
721 if (board->num_dio_ports) {
722 s->type = COMEDI_SUBD_DIO;
723 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
724 s->n_chan = NI_65XX_PORT_TO_CHAN(board->num_dio_ports);
725 s->maxdata = 1;
726 s->range_table = &range_digital;
727 s->insn_bits = ni_65xx_dio_insn_bits;
728 s->insn_config = ni_65xx_dio_insn_config;
729
730 /* the input/output ports always start at port 0 */
731 s->private = (void *)0;
732
733 /* configure all ports for input */
734 for (i = 0; i < board->num_dio_ports; ++i) {
735 writeb(NI_65XX_IO_SEL_INPUT,
736 dev->mmio + NI_65XX_IO_SEL_REG(i));
737 }
738 } else {
739 s->type = COMEDI_SUBD_UNUSED;
740 }
741
742 s = &dev->subdevices[3];
743 s->type = COMEDI_SUBD_DI;
744 s->subdev_flags = SDF_READABLE;
745 s->n_chan = 1;
746 s->maxdata = 1;
747 s->range_table = &range_digital;
748 s->insn_bits = ni_65xx_intr_insn_bits;
749 if (dev->irq) {
750 dev->read_subdev = s;
751 s->subdev_flags |= SDF_CMD_READ;
752 s->len_chanlist = 1;
753 s->insn_config = ni_65xx_intr_insn_config;
754 s->do_cmdtest = ni_65xx_intr_cmdtest;
755 s->do_cmd = ni_65xx_intr_cmd;
756 s->cancel = ni_65xx_intr_cancel;
757 }
758
759 ni_65xx_disable_input_filters(dev);
760 ni_65xx_disable_edge_detection(dev);
761
762 return 0;
763 }
764
ni_65xx_detach(struct comedi_device * dev)765 static void ni_65xx_detach(struct comedi_device *dev)
766 {
767 if (dev->mmio)
768 writeb(0x00, dev->mmio + NI_65XX_CTRL_REG);
769 comedi_pci_detach(dev);
770 }
771
772 static struct comedi_driver ni_65xx_driver = {
773 .driver_name = "ni_65xx",
774 .module = THIS_MODULE,
775 .auto_attach = ni_65xx_auto_attach,
776 .detach = ni_65xx_detach,
777 };
778
ni_65xx_pci_probe(struct pci_dev * dev,const struct pci_device_id * id)779 static int ni_65xx_pci_probe(struct pci_dev *dev,
780 const struct pci_device_id *id)
781 {
782 return comedi_pci_auto_config(dev, &ni_65xx_driver, id->driver_data);
783 }
784
785 static const struct pci_device_id ni_65xx_pci_table[] = {
786 { PCI_VDEVICE(NI, 0x1710), BOARD_PXI6509 },
787 { PCI_VDEVICE(NI, 0x7085), BOARD_PCI6509 },
788 { PCI_VDEVICE(NI, 0x7086), BOARD_PXI6528 },
789 { PCI_VDEVICE(NI, 0x7087), BOARD_PCI6515 },
790 { PCI_VDEVICE(NI, 0x7088), BOARD_PCI6514 },
791 { PCI_VDEVICE(NI, 0x70a9), BOARD_PCI6528 },
792 { PCI_VDEVICE(NI, 0x70c3), BOARD_PCI6511 },
793 { PCI_VDEVICE(NI, 0x70c8), BOARD_PCI6513 },
794 { PCI_VDEVICE(NI, 0x70c9), BOARD_PXI6515 },
795 { PCI_VDEVICE(NI, 0x70cc), BOARD_PCI6512 },
796 { PCI_VDEVICE(NI, 0x70cd), BOARD_PXI6514 },
797 { PCI_VDEVICE(NI, 0x70d1), BOARD_PXI6513 },
798 { PCI_VDEVICE(NI, 0x70d2), BOARD_PXI6512 },
799 { PCI_VDEVICE(NI, 0x70d3), BOARD_PXI6511 },
800 { PCI_VDEVICE(NI, 0x7124), BOARD_PCI6510 },
801 { PCI_VDEVICE(NI, 0x7125), BOARD_PCI6516 },
802 { PCI_VDEVICE(NI, 0x7126), BOARD_PCI6517 },
803 { PCI_VDEVICE(NI, 0x7127), BOARD_PCI6518 },
804 { PCI_VDEVICE(NI, 0x7128), BOARD_PCI6519 },
805 { PCI_VDEVICE(NI, 0x718b), BOARD_PCI6521 },
806 { PCI_VDEVICE(NI, 0x718c), BOARD_PXI6521 },
807 { PCI_VDEVICE(NI, 0x71c5), BOARD_PCI6520 },
808 { 0 }
809 };
810 MODULE_DEVICE_TABLE(pci, ni_65xx_pci_table);
811
812 static struct pci_driver ni_65xx_pci_driver = {
813 .name = "ni_65xx",
814 .id_table = ni_65xx_pci_table,
815 .probe = ni_65xx_pci_probe,
816 .remove = comedi_pci_auto_unconfig,
817 };
818 module_comedi_pci_driver(ni_65xx_driver, ni_65xx_pci_driver);
819
820 MODULE_AUTHOR("Comedi https://www.comedi.org");
821 MODULE_DESCRIPTION("Comedi driver for NI PCI-65xx static dio boards");
822 MODULE_LICENSE("GPL");
823