2 * Hardware driver for DAQ-STC based boards
4 * COMEDI - Linux Control and Measurement Device Interface
5 * Copyright (C) 1997-2001 David A. Schleef <ds@schleef.org>
6 * Copyright (C) 2002-2006 Frank Mori Hess <fmhess@users.sourceforge.net>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
20 * This file is meant to be included by another file, e.g.,
21 * ni_atmio.c or ni_pcimio.c.
23 * Interrupt support originally added by Truxton Fulton <trux@truxton.com>
25 * References (ftp://ftp.natinst.com/support/manuals):
26 * 340747b.pdf AT-MIO E series Register Level Programmer Manual
27 * 341079b.pdf PCI E Series RLPM
28 * 340934b.pdf DAQ-STC reference manual
30 * 67xx and 611x registers (ftp://ftp.ni.com/support/daq/mhddk/documentation/)
34 * Other possibly relevant info:
35 * 320517c.pdf User manual (obsolete)
36 * 320517f.pdf User manual (new)
38 * 320906c.pdf maximum signal ratings
39 * 321066a.pdf about 16x
40 * 321791a.pdf discontinuation of at-mio-16e-10 rev. c
41 * 321808a.pdf about at-mio-16e-10 rev P
42 * 321837a.pdf discontinuation of at-mio-16de-10 rev d
43 * 321838a.pdf about at-mio-16de-10 rev N
46 * - the interrupt routine needs to be cleaned up
48 * 2006-02-07: S-Series PCI-6143: Support has been added but is not
49 * fully tested as yet. Terry Barnaby, BEAM Ltd.
52 #include <linux/interrupt.h>
53 #include <linux/sched.h>
54 #include <linux/delay.h>
59 #define NI_TIMEOUT 1000
61 /* Note: this table must match the ai_gain_* definitions */
62 static const short ni_gainlkup[][16] = {
63 [ai_gain_16] = {0, 1, 2, 3, 4, 5, 6, 7,
64 0x100, 0x101, 0x102, 0x103, 0x104, 0x105, 0x106, 0x107},
65 [ai_gain_8] = {1, 2, 4, 7, 0x101, 0x102, 0x104, 0x107},
66 [ai_gain_14] = {1, 2, 3, 4, 5, 6, 7,
67 0x101, 0x102, 0x103, 0x104, 0x105, 0x106, 0x107},
68 [ai_gain_4] = {0, 1, 4, 7},
69 [ai_gain_611x] = {0x00a, 0x00b, 0x001, 0x002,
70 0x003, 0x004, 0x005, 0x006},
71 [ai_gain_622x] = {0, 1, 4, 5},
72 [ai_gain_628x] = {1, 2, 3, 4, 5, 6, 7},
73 [ai_gain_6143] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
76 static const struct comedi_lrange range_ni_E_ai = {
97 static const struct comedi_lrange range_ni_E_ai_limited = {
110 static const struct comedi_lrange range_ni_E_ai_limited14 = {
129 static const struct comedi_lrange range_ni_E_ai_bipolar4 = {
138 static const struct comedi_lrange range_ni_E_ai_611x = {
151 static const struct comedi_lrange range_ni_M_ai_622x = {
160 static const struct comedi_lrange range_ni_M_ai_628x = {
172 static const struct comedi_lrange range_ni_E_ao_ext = {
181 static const struct comedi_lrange *const ni_range_lkup[] = {
182 [ai_gain_16] = &range_ni_E_ai,
183 [ai_gain_8] = &range_ni_E_ai_limited,
184 [ai_gain_14] = &range_ni_E_ai_limited14,
185 [ai_gain_4] = &range_ni_E_ai_bipolar4,
186 [ai_gain_611x] = &range_ni_E_ai_611x,
187 [ai_gain_622x] = &range_ni_M_ai_622x,
188 [ai_gain_628x] = &range_ni_M_ai_628x,
189 [ai_gain_6143] = &range_bipolar5
194 AIMODE_HALF_FULL = 1,
199 enum ni_common_subdevices {
205 NI_CALIBRATION_SUBDEV,
208 NI_CS5529_CALIBRATION_SUBDEV,
217 #define NI_GPCT_SUBDEV(x) (NI_GPCT0_SUBDEV + (x))
219 enum timebase_nanoseconds {
221 TIMEBASE_2_NS = 10000
224 #define SERIAL_DISABLED 0
225 #define SERIAL_600NS 600
226 #define SERIAL_1_2US 1200
227 #define SERIAL_10US 10000
229 static const int num_adc_stages_611x = 3;
231 static void ni_writel(struct comedi_device *dev, unsigned int data, int reg)
234 writel(data, dev->mmio + reg);
236 outl(data, dev->iobase + reg);
239 static void ni_writew(struct comedi_device *dev, unsigned int data, int reg)
242 writew(data, dev->mmio + reg);
244 outw(data, dev->iobase + reg);
247 static void ni_writeb(struct comedi_device *dev, unsigned int data, int reg)
250 writeb(data, dev->mmio + reg);
252 outb(data, dev->iobase + reg);
255 static unsigned int ni_readl(struct comedi_device *dev, int reg)
258 return readl(dev->mmio + reg);
260 return inl(dev->iobase + reg);
263 static unsigned int ni_readw(struct comedi_device *dev, int reg)
266 return readw(dev->mmio + reg);
268 return inw(dev->iobase + reg);
271 static unsigned int ni_readb(struct comedi_device *dev, int reg)
274 return readb(dev->mmio + reg);
276 return inb(dev->iobase + reg);
280 * We automatically take advantage of STC registers that can be
281 * read/written directly in the I/O space of the board.
283 * The AT-MIO and DAQCard devices map the low 8 STC registers to
286 * Most PCIMIO devices also map the low 8 STC registers but the
287 * 611x devices map the read registers to iobase+(addr-1)*2.
288 * For now non-windowed STC access is disabled if a PCIMIO device
289 * is detected (devpriv->mite has been initialized).
291 * The M series devices do not used windowed registers for the
292 * STC registers. The functions below handle the mapping of the
293 * windowed STC registers to the m series register offsets.
297 unsigned int mio_reg;
301 static const struct mio_regmap m_series_stc_write_regmap[] = {
302 [NISTC_INTA_ACK_REG] = { 0x104, 2 },
303 [NISTC_INTB_ACK_REG] = { 0x106, 2 },
304 [NISTC_AI_CMD2_REG] = { 0x108, 2 },
305 [NISTC_AO_CMD2_REG] = { 0x10a, 2 },
306 [NISTC_G0_CMD_REG] = { 0x10c, 2 },
307 [NISTC_G1_CMD_REG] = { 0x10e, 2 },
308 [NISTC_AI_CMD1_REG] = { 0x110, 2 },
309 [NISTC_AO_CMD1_REG] = { 0x112, 2 },
311 * NISTC_DIO_OUT_REG maps to:
312 * { NI_M_DIO_REG, 4 } and { NI_M_SCXI_SER_DO_REG, 1 }
314 [NISTC_DIO_OUT_REG] = { 0, 0 }, /* DOES NOT MAP CLEANLY */
315 [NISTC_DIO_CTRL_REG] = { 0, 0 }, /* DOES NOT MAP CLEANLY */
316 [NISTC_AI_MODE1_REG] = { 0x118, 2 },
317 [NISTC_AI_MODE2_REG] = { 0x11a, 2 },
318 [NISTC_AI_SI_LOADA_REG] = { 0x11c, 4 },
319 [NISTC_AI_SI_LOADB_REG] = { 0x120, 4 },
320 [NISTC_AI_SC_LOADA_REG] = { 0x124, 4 },
321 [NISTC_AI_SC_LOADB_REG] = { 0x128, 4 },
322 [NISTC_AI_SI2_LOADA_REG] = { 0x12c, 4 },
323 [NISTC_AI_SI2_LOADB_REG] = { 0x130, 4 },
324 [NISTC_G0_MODE_REG] = { 0x134, 2 },
325 [NISTC_G1_MODE_REG] = { 0x136, 2 },
326 [NISTC_G0_LOADA_REG] = { 0x138, 4 },
327 [NISTC_G0_LOADB_REG] = { 0x13c, 4 },
328 [NISTC_G1_LOADA_REG] = { 0x140, 4 },
329 [NISTC_G1_LOADB_REG] = { 0x144, 4 },
330 [NISTC_G0_INPUT_SEL_REG] = { 0x148, 2 },
331 [NISTC_G1_INPUT_SEL_REG] = { 0x14a, 2 },
332 [NISTC_AO_MODE1_REG] = { 0x14c, 2 },
333 [NISTC_AO_MODE2_REG] = { 0x14e, 2 },
334 [NISTC_AO_UI_LOADA_REG] = { 0x150, 4 },
335 [NISTC_AO_UI_LOADB_REG] = { 0x154, 4 },
336 [NISTC_AO_BC_LOADA_REG] = { 0x158, 4 },
337 [NISTC_AO_BC_LOADB_REG] = { 0x15c, 4 },
338 [NISTC_AO_UC_LOADA_REG] = { 0x160, 4 },
339 [NISTC_AO_UC_LOADB_REG] = { 0x164, 4 },
340 [NISTC_CLK_FOUT_REG] = { 0x170, 2 },
341 [NISTC_IO_BIDIR_PIN_REG] = { 0x172, 2 },
342 [NISTC_RTSI_TRIG_DIR_REG] = { 0x174, 2 },
343 [NISTC_INT_CTRL_REG] = { 0x176, 2 },
344 [NISTC_AI_OUT_CTRL_REG] = { 0x178, 2 },
345 [NISTC_ATRIG_ETC_REG] = { 0x17a, 2 },
346 [NISTC_AI_START_STOP_REG] = { 0x17c, 2 },
347 [NISTC_AI_TRIG_SEL_REG] = { 0x17e, 2 },
348 [NISTC_AI_DIV_LOADA_REG] = { 0x180, 4 },
349 [NISTC_AO_START_SEL_REG] = { 0x184, 2 },
350 [NISTC_AO_TRIG_SEL_REG] = { 0x186, 2 },
351 [NISTC_G0_AUTOINC_REG] = { 0x188, 2 },
352 [NISTC_G1_AUTOINC_REG] = { 0x18a, 2 },
353 [NISTC_AO_MODE3_REG] = { 0x18c, 2 },
354 [NISTC_RESET_REG] = { 0x190, 2 },
355 [NISTC_INTA_ENA_REG] = { 0x192, 2 },
356 [NISTC_INTA2_ENA_REG] = { 0, 0 }, /* E-Series only */
357 [NISTC_INTB_ENA_REG] = { 0x196, 2 },
358 [NISTC_INTB2_ENA_REG] = { 0, 0 }, /* E-Series only */
359 [NISTC_AI_PERSONAL_REG] = { 0x19a, 2 },
360 [NISTC_AO_PERSONAL_REG] = { 0x19c, 2 },
361 [NISTC_RTSI_TRIGA_OUT_REG] = { 0x19e, 2 },
362 [NISTC_RTSI_TRIGB_OUT_REG] = { 0x1a0, 2 },
363 [NISTC_RTSI_BOARD_REG] = { 0, 0 }, /* Unknown */
364 [NISTC_CFG_MEM_CLR_REG] = { 0x1a4, 2 },
365 [NISTC_ADC_FIFO_CLR_REG] = { 0x1a6, 2 },
366 [NISTC_DAC_FIFO_CLR_REG] = { 0x1a8, 2 },
367 [NISTC_AO_OUT_CTRL_REG] = { 0x1ac, 2 },
368 [NISTC_AI_MODE3_REG] = { 0x1ae, 2 },
371 static void m_series_stc_write(struct comedi_device *dev,
372 unsigned int data, unsigned int reg)
374 const struct mio_regmap *regmap;
376 if (reg < ARRAY_SIZE(m_series_stc_write_regmap)) {
377 regmap = &m_series_stc_write_regmap[reg];
379 dev_warn(dev->class_dev, "%s: unhandled register=0x%x\n",
384 switch (regmap->size) {
386 ni_writel(dev, data, regmap->mio_reg);
389 ni_writew(dev, data, regmap->mio_reg);
392 dev_warn(dev->class_dev, "%s: unmapped register=0x%x\n",
398 static const struct mio_regmap m_series_stc_read_regmap[] = {
399 [NISTC_AI_STATUS1_REG] = { 0x104, 2 },
400 [NISTC_AO_STATUS1_REG] = { 0x106, 2 },
401 [NISTC_G01_STATUS_REG] = { 0x108, 2 },
402 [NISTC_AI_STATUS2_REG] = { 0, 0 }, /* Unknown */
403 [NISTC_AO_STATUS2_REG] = { 0x10c, 2 },
404 [NISTC_DIO_IN_REG] = { 0, 0 }, /* Unknown */
405 [NISTC_G0_HW_SAVE_REG] = { 0x110, 4 },
406 [NISTC_G1_HW_SAVE_REG] = { 0x114, 4 },
407 [NISTC_G0_SAVE_REG] = { 0x118, 4 },
408 [NISTC_G1_SAVE_REG] = { 0x11c, 4 },
409 [NISTC_AO_UI_SAVE_REG] = { 0x120, 4 },
410 [NISTC_AO_BC_SAVE_REG] = { 0x124, 4 },
411 [NISTC_AO_UC_SAVE_REG] = { 0x128, 4 },
412 [NISTC_STATUS1_REG] = { 0x136, 2 },
413 [NISTC_DIO_SERIAL_IN_REG] = { 0x009, 1 },
414 [NISTC_STATUS2_REG] = { 0x13a, 2 },
415 [NISTC_AI_SI_SAVE_REG] = { 0x180, 4 },
416 [NISTC_AI_SC_SAVE_REG] = { 0x184, 4 },
419 static unsigned int m_series_stc_read(struct comedi_device *dev,
422 const struct mio_regmap *regmap;
424 if (reg < ARRAY_SIZE(m_series_stc_read_regmap)) {
425 regmap = &m_series_stc_read_regmap[reg];
427 dev_warn(dev->class_dev, "%s: unhandled register=0x%x\n",
432 switch (regmap->size) {
434 return ni_readl(dev, regmap->mio_reg);
436 return ni_readw(dev, regmap->mio_reg);
438 return ni_readb(dev, regmap->mio_reg);
440 dev_warn(dev->class_dev, "%s: unmapped register=0x%x\n",
446 static void ni_stc_writew(struct comedi_device *dev,
447 unsigned int data, int reg)
449 struct ni_private *devpriv = dev->private;
452 if (devpriv->is_m_series) {
453 m_series_stc_write(dev, data, reg);
455 spin_lock_irqsave(&devpriv->window_lock, flags);
456 if (!devpriv->mite && reg < 8) {
457 ni_writew(dev, data, reg * 2);
459 ni_writew(dev, reg, NI_E_STC_WINDOW_ADDR_REG);
460 ni_writew(dev, data, NI_E_STC_WINDOW_DATA_REG);
462 spin_unlock_irqrestore(&devpriv->window_lock, flags);
466 static void ni_stc_writel(struct comedi_device *dev,
467 unsigned int data, int reg)
469 struct ni_private *devpriv = dev->private;
471 if (devpriv->is_m_series) {
472 m_series_stc_write(dev, data, reg);
474 ni_stc_writew(dev, data >> 16, reg);
475 ni_stc_writew(dev, data & 0xffff, reg + 1);
479 static unsigned int ni_stc_readw(struct comedi_device *dev, int reg)
481 struct ni_private *devpriv = dev->private;
485 if (devpriv->is_m_series) {
486 val = m_series_stc_read(dev, reg);
488 spin_lock_irqsave(&devpriv->window_lock, flags);
489 if (!devpriv->mite && reg < 8) {
490 val = ni_readw(dev, reg * 2);
492 ni_writew(dev, reg, NI_E_STC_WINDOW_ADDR_REG);
493 val = ni_readw(dev, NI_E_STC_WINDOW_DATA_REG);
495 spin_unlock_irqrestore(&devpriv->window_lock, flags);
500 static unsigned int ni_stc_readl(struct comedi_device *dev, int reg)
502 struct ni_private *devpriv = dev->private;
505 if (devpriv->is_m_series) {
506 val = m_series_stc_read(dev, reg);
508 val = ni_stc_readw(dev, reg) << 16;
509 val |= ni_stc_readw(dev, reg + 1);
514 static inline void ni_set_bitfield(struct comedi_device *dev, int reg,
515 unsigned int bit_mask,
516 unsigned int bit_values)
518 struct ni_private *devpriv = dev->private;
521 spin_lock_irqsave(&devpriv->soft_reg_copy_lock, flags);
523 case NISTC_INTA_ENA_REG:
524 devpriv->int_a_enable_reg &= ~bit_mask;
525 devpriv->int_a_enable_reg |= bit_values & bit_mask;
526 ni_stc_writew(dev, devpriv->int_a_enable_reg, reg);
528 case NISTC_INTB_ENA_REG:
529 devpriv->int_b_enable_reg &= ~bit_mask;
530 devpriv->int_b_enable_reg |= bit_values & bit_mask;
531 ni_stc_writew(dev, devpriv->int_b_enable_reg, reg);
533 case NISTC_IO_BIDIR_PIN_REG:
534 devpriv->io_bidirection_pin_reg &= ~bit_mask;
535 devpriv->io_bidirection_pin_reg |= bit_values & bit_mask;
536 ni_stc_writew(dev, devpriv->io_bidirection_pin_reg, reg);
538 case NI_E_DMA_AI_AO_SEL_REG:
539 devpriv->ai_ao_select_reg &= ~bit_mask;
540 devpriv->ai_ao_select_reg |= bit_values & bit_mask;
541 ni_writeb(dev, devpriv->ai_ao_select_reg, reg);
543 case NI_E_DMA_G0_G1_SEL_REG:
544 devpriv->g0_g1_select_reg &= ~bit_mask;
545 devpriv->g0_g1_select_reg |= bit_values & bit_mask;
546 ni_writeb(dev, devpriv->g0_g1_select_reg, reg);
548 case NI_M_CDIO_DMA_SEL_REG:
549 devpriv->cdio_dma_select_reg &= ~bit_mask;
550 devpriv->cdio_dma_select_reg |= bit_values & bit_mask;
551 ni_writeb(dev, devpriv->cdio_dma_select_reg, reg);
554 dev_err(dev->class_dev, "called with invalid register %d\n",
559 spin_unlock_irqrestore(&devpriv->soft_reg_copy_lock, flags);
564 /* selects the MITE channel to use for DMA */
565 #define NI_STC_DMA_CHAN_SEL(x) (((x) < 4) ? BIT(x) : \
567 ((x) == 5) ? 0x5 : 0x0)
569 /* DMA channel setup */
570 static int ni_request_ai_mite_channel(struct comedi_device *dev)
572 struct ni_private *devpriv = dev->private;
573 struct mite_channel *mite_chan;
577 spin_lock_irqsave(&devpriv->mite_channel_lock, flags);
578 mite_chan = mite_request_channel(devpriv->mite, devpriv->ai_mite_ring);
580 spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags);
581 dev_err(dev->class_dev,
582 "failed to reserve mite dma channel for analog input\n");
585 mite_chan->dir = COMEDI_INPUT;
586 devpriv->ai_mite_chan = mite_chan;
588 bits = NI_STC_DMA_CHAN_SEL(mite_chan->channel);
589 ni_set_bitfield(dev, NI_E_DMA_AI_AO_SEL_REG,
590 NI_E_DMA_AI_SEL_MASK, NI_E_DMA_AI_SEL(bits));
592 spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags);
596 static int ni_request_ao_mite_channel(struct comedi_device *dev)
598 struct ni_private *devpriv = dev->private;
599 struct mite_channel *mite_chan;
603 spin_lock_irqsave(&devpriv->mite_channel_lock, flags);
604 mite_chan = mite_request_channel(devpriv->mite, devpriv->ao_mite_ring);
606 spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags);
607 dev_err(dev->class_dev,
608 "failed to reserve mite dma channel for analog outut\n");
611 mite_chan->dir = COMEDI_OUTPUT;
612 devpriv->ao_mite_chan = mite_chan;
614 bits = NI_STC_DMA_CHAN_SEL(mite_chan->channel);
615 ni_set_bitfield(dev, NI_E_DMA_AI_AO_SEL_REG,
616 NI_E_DMA_AO_SEL_MASK, NI_E_DMA_AO_SEL(bits));
618 spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags);
622 static int ni_request_gpct_mite_channel(struct comedi_device *dev,
623 unsigned int gpct_index,
624 enum comedi_io_direction direction)
626 struct ni_private *devpriv = dev->private;
627 struct ni_gpct *counter = &devpriv->counter_dev->counters[gpct_index];
628 struct mite_channel *mite_chan;
632 spin_lock_irqsave(&devpriv->mite_channel_lock, flags);
633 mite_chan = mite_request_channel(devpriv->mite,
634 devpriv->gpct_mite_ring[gpct_index]);
636 spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags);
637 dev_err(dev->class_dev,
638 "failed to reserve mite dma channel for counter\n");
641 mite_chan->dir = direction;
642 ni_tio_set_mite_channel(counter, mite_chan);
644 bits = NI_STC_DMA_CHAN_SEL(mite_chan->channel);
645 ni_set_bitfield(dev, NI_E_DMA_G0_G1_SEL_REG,
646 NI_E_DMA_G0_G1_SEL_MASK(gpct_index),
647 NI_E_DMA_G0_G1_SEL(gpct_index, bits));
649 spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags);
653 static int ni_request_cdo_mite_channel(struct comedi_device *dev)
655 struct ni_private *devpriv = dev->private;
656 struct mite_channel *mite_chan;
660 spin_lock_irqsave(&devpriv->mite_channel_lock, flags);
661 mite_chan = mite_request_channel(devpriv->mite, devpriv->cdo_mite_ring);
663 spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags);
664 dev_err(dev->class_dev,
665 "failed to reserve mite dma channel for correlated digital output\n");
668 mite_chan->dir = COMEDI_OUTPUT;
669 devpriv->cdo_mite_chan = mite_chan;
672 * XXX just guessing NI_STC_DMA_CHAN_SEL()
673 * returns the right bits, under the assumption the cdio dma
674 * selection works just like ai/ao/gpct.
675 * Definitely works for dma channels 0 and 1.
677 bits = NI_STC_DMA_CHAN_SEL(mite_chan->channel);
678 ni_set_bitfield(dev, NI_M_CDIO_DMA_SEL_REG,
679 NI_M_CDIO_DMA_SEL_CDO_MASK,
680 NI_M_CDIO_DMA_SEL_CDO(bits));
682 spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags);
687 static void ni_release_ai_mite_channel(struct comedi_device *dev)
690 struct ni_private *devpriv = dev->private;
693 spin_lock_irqsave(&devpriv->mite_channel_lock, flags);
694 if (devpriv->ai_mite_chan) {
695 ni_set_bitfield(dev, NI_E_DMA_AI_AO_SEL_REG,
696 NI_E_DMA_AI_SEL_MASK, 0);
697 mite_release_channel(devpriv->ai_mite_chan);
698 devpriv->ai_mite_chan = NULL;
700 spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags);
704 static void ni_release_ao_mite_channel(struct comedi_device *dev)
707 struct ni_private *devpriv = dev->private;
710 spin_lock_irqsave(&devpriv->mite_channel_lock, flags);
711 if (devpriv->ao_mite_chan) {
712 ni_set_bitfield(dev, NI_E_DMA_AI_AO_SEL_REG,
713 NI_E_DMA_AO_SEL_MASK, 0);
714 mite_release_channel(devpriv->ao_mite_chan);
715 devpriv->ao_mite_chan = NULL;
717 spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags);
722 static void ni_release_gpct_mite_channel(struct comedi_device *dev,
723 unsigned int gpct_index)
725 struct ni_private *devpriv = dev->private;
728 spin_lock_irqsave(&devpriv->mite_channel_lock, flags);
729 if (devpriv->counter_dev->counters[gpct_index].mite_chan) {
730 struct mite_channel *mite_chan =
731 devpriv->counter_dev->counters[gpct_index].mite_chan;
733 ni_set_bitfield(dev, NI_E_DMA_G0_G1_SEL_REG,
734 NI_E_DMA_G0_G1_SEL_MASK(gpct_index), 0);
735 ni_tio_set_mite_channel(&devpriv->
736 counter_dev->counters[gpct_index],
738 mite_release_channel(mite_chan);
740 spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags);
743 static void ni_release_cdo_mite_channel(struct comedi_device *dev)
745 struct ni_private *devpriv = dev->private;
748 spin_lock_irqsave(&devpriv->mite_channel_lock, flags);
749 if (devpriv->cdo_mite_chan) {
750 ni_set_bitfield(dev, NI_M_CDIO_DMA_SEL_REG,
751 NI_M_CDIO_DMA_SEL_CDO_MASK, 0);
752 mite_release_channel(devpriv->cdo_mite_chan);
753 devpriv->cdo_mite_chan = NULL;
755 spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags);
758 static void ni_e_series_enable_second_irq(struct comedi_device *dev,
759 unsigned int gpct_index, short enable)
761 struct ni_private *devpriv = dev->private;
762 unsigned int val = 0;
765 if (devpriv->is_m_series || gpct_index > 1)
769 * e-series boards use the second irq signals to generate
770 * dma requests for their counters
772 if (gpct_index == 0) {
773 reg = NISTC_INTA2_ENA_REG;
775 val = NISTC_INTA_ENA_G0_GATE;
777 reg = NISTC_INTB2_ENA_REG;
779 val = NISTC_INTB_ENA_G1_GATE;
781 ni_stc_writew(dev, val, reg);
785 static void ni_clear_ai_fifo(struct comedi_device *dev)
787 struct ni_private *devpriv = dev->private;
788 static const int timeout = 10000;
791 if (devpriv->is_6143) {
792 /* Flush the 6143 data FIFO */
793 ni_writel(dev, 0x10, NI6143_AI_FIFO_CTRL_REG);
794 ni_writel(dev, 0x00, NI6143_AI_FIFO_CTRL_REG);
795 /* Wait for complete */
796 for (i = 0; i < timeout; i++) {
797 if (!(ni_readl(dev, NI6143_AI_FIFO_STATUS_REG) & 0x10))
802 dev_err(dev->class_dev, "FIFO flush timeout\n");
804 ni_stc_writew(dev, 1, NISTC_ADC_FIFO_CLR_REG);
805 if (devpriv->is_625x) {
806 ni_writeb(dev, 0, NI_M_STATIC_AI_CTRL_REG(0));
807 ni_writeb(dev, 1, NI_M_STATIC_AI_CTRL_REG(0));
810 * The NI example code does 3 convert pulses for 625x
811 * boards, But that appears to be wrong in practice.
813 ni_stc_writew(dev, NISTC_AI_CMD1_CONVERT_PULSE,
815 ni_stc_writew(dev, NISTC_AI_CMD1_CONVERT_PULSE,
817 ni_stc_writew(dev, NISTC_AI_CMD1_CONVERT_PULSE,
824 static inline void ni_ao_win_outw(struct comedi_device *dev,
825 unsigned int data, int addr)
827 struct ni_private *devpriv = dev->private;
830 spin_lock_irqsave(&devpriv->window_lock, flags);
831 ni_writew(dev, addr, NI611X_AO_WINDOW_ADDR_REG);
832 ni_writew(dev, data, NI611X_AO_WINDOW_DATA_REG);
833 spin_unlock_irqrestore(&devpriv->window_lock, flags);
836 static inline void ni_ao_win_outl(struct comedi_device *dev,
837 unsigned int data, int addr)
839 struct ni_private *devpriv = dev->private;
842 spin_lock_irqsave(&devpriv->window_lock, flags);
843 ni_writew(dev, addr, NI611X_AO_WINDOW_ADDR_REG);
844 ni_writel(dev, data, NI611X_AO_WINDOW_DATA_REG);
845 spin_unlock_irqrestore(&devpriv->window_lock, flags);
848 static inline unsigned short ni_ao_win_inw(struct comedi_device *dev, int addr)
850 struct ni_private *devpriv = dev->private;
854 spin_lock_irqsave(&devpriv->window_lock, flags);
855 ni_writew(dev, addr, NI611X_AO_WINDOW_ADDR_REG);
856 data = ni_readw(dev, NI611X_AO_WINDOW_DATA_REG);
857 spin_unlock_irqrestore(&devpriv->window_lock, flags);
862 * ni_set_bits( ) allows different parts of the ni_mio_common driver to
863 * share registers (such as Interrupt_A_Register) without interfering with
866 * NOTE: the switch/case statements are optimized out for a constant argument
867 * so this is actually quite fast--- If you must wrap another function around
868 * this make it inline to avoid a large speed penalty.
870 * value should only be 1 or 0.
872 static inline void ni_set_bits(struct comedi_device *dev, int reg,
873 unsigned int bits, unsigned int value)
875 unsigned int bit_values;
881 ni_set_bitfield(dev, reg, bits, bit_values);
885 static void ni_sync_ai_dma(struct comedi_device *dev)
887 struct ni_private *devpriv = dev->private;
888 struct comedi_subdevice *s = dev->read_subdev;
891 spin_lock_irqsave(&devpriv->mite_channel_lock, flags);
892 if (devpriv->ai_mite_chan)
893 mite_sync_dma(devpriv->ai_mite_chan, s);
894 spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags);
897 static int ni_ai_drain_dma(struct comedi_device *dev)
899 struct ni_private *devpriv = dev->private;
901 static const int timeout = 10000;
905 spin_lock_irqsave(&devpriv->mite_channel_lock, flags);
906 if (devpriv->ai_mite_chan) {
907 for (i = 0; i < timeout; i++) {
908 if ((ni_stc_readw(dev, NISTC_AI_STATUS1_REG) &
909 NISTC_AI_STATUS1_FIFO_E) &&
910 mite_bytes_in_transit(devpriv->ai_mite_chan) == 0)
915 dev_err(dev->class_dev, "timed out\n");
916 dev_err(dev->class_dev,
917 "mite_bytes_in_transit=%i, AI_Status1_Register=0x%x\n",
918 mite_bytes_in_transit(devpriv->ai_mite_chan),
919 ni_stc_readw(dev, NISTC_AI_STATUS1_REG));
923 spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags);
930 static int ni_ao_wait_for_dma_load(struct comedi_device *dev)
932 static const int timeout = 10000;
935 for (i = 0; i < timeout; i++) {
936 unsigned short b_status;
938 b_status = ni_stc_readw(dev, NISTC_AO_STATUS1_REG);
939 if (b_status & NISTC_AO_STATUS1_FIFO_HF)
942 * If we poll too often, the pci bus activity seems
943 * to slow the dma transfer down.
945 usleep_range(10, 100);
948 dev_err(dev->class_dev, "timed out waiting for dma load\n");
957 static void ni_ao_fifo_load(struct comedi_device *dev,
958 struct comedi_subdevice *s, int n)
960 struct ni_private *devpriv = dev->private;
963 unsigned int packed_data;
965 for (i = 0; i < n; i++) {
966 comedi_buf_read_samples(s, &d, 1);
968 if (devpriv->is_6xxx) {
969 packed_data = d & 0xffff;
970 /* 6711 only has 16 bit wide ao fifo */
971 if (!devpriv->is_6711) {
972 comedi_buf_read_samples(s, &d, 1);
974 packed_data |= (d << 16) & 0xffff0000;
976 ni_writel(dev, packed_data, NI611X_AO_FIFO_DATA_REG);
978 ni_writew(dev, d, NI_E_AO_FIFO_DATA_REG);
984 * There's a small problem if the FIFO gets really low and we
985 * don't have the data to fill it. Basically, if after we fill
986 * the FIFO with all the data available, the FIFO is _still_
987 * less than half full, we never clear the interrupt. If the
988 * IRQ is in edge mode, we never get another interrupt, because
989 * this one wasn't cleared. If in level mode, we get flooded
990 * with interrupts that we can't fulfill, because nothing ever
991 * gets put into the buffer.
993 * This kind of situation is recoverable, but it is easier to
994 * just pretend we had a FIFO underrun, since there is a good
995 * chance it will happen anyway. This is _not_ the case for
996 * RT code, as RT code might purposely be running close to the
997 * metal. Needs to be fixed eventually.
999 static int ni_ao_fifo_half_empty(struct comedi_device *dev,
1000 struct comedi_subdevice *s)
1002 const struct ni_board_struct *board = dev->board_ptr;
1003 unsigned int nbytes;
1004 unsigned int nsamples;
1006 nbytes = comedi_buf_read_n_available(s);
1008 s->async->events |= COMEDI_CB_OVERFLOW;
1012 nsamples = comedi_bytes_to_samples(s, nbytes);
1013 if (nsamples > board->ao_fifo_depth / 2)
1014 nsamples = board->ao_fifo_depth / 2;
1016 ni_ao_fifo_load(dev, s, nsamples);
1021 static int ni_ao_prep_fifo(struct comedi_device *dev,
1022 struct comedi_subdevice *s)
1024 const struct ni_board_struct *board = dev->board_ptr;
1025 struct ni_private *devpriv = dev->private;
1026 unsigned int nbytes;
1027 unsigned int nsamples;
1030 ni_stc_writew(dev, 1, NISTC_DAC_FIFO_CLR_REG);
1031 if (devpriv->is_6xxx)
1032 ni_ao_win_outl(dev, 0x6, NI611X_AO_FIFO_OFFSET_LOAD_REG);
1034 /* load some data */
1035 nbytes = comedi_buf_read_n_available(s);
1039 nsamples = comedi_bytes_to_samples(s, nbytes);
1040 if (nsamples > board->ao_fifo_depth)
1041 nsamples = board->ao_fifo_depth;
1043 ni_ao_fifo_load(dev, s, nsamples);
1048 static void ni_ai_fifo_read(struct comedi_device *dev,
1049 struct comedi_subdevice *s, int n)
1051 struct ni_private *devpriv = dev->private;
1052 struct comedi_async *async = s->async;
1054 unsigned short data;
1057 if (devpriv->is_611x) {
1058 for (i = 0; i < n / 2; i++) {
1059 dl = ni_readl(dev, NI611X_AI_FIFO_DATA_REG);
1060 /* This may get the hi/lo data in the wrong order */
1061 data = (dl >> 16) & 0xffff;
1062 comedi_buf_write_samples(s, &data, 1);
1064 comedi_buf_write_samples(s, &data, 1);
1066 /* Check if there's a single sample stuck in the FIFO */
1068 dl = ni_readl(dev, NI611X_AI_FIFO_DATA_REG);
1070 comedi_buf_write_samples(s, &data, 1);
1072 } else if (devpriv->is_6143) {
1074 * This just reads the FIFO assuming the data is present,
1075 * no checks on the FIFO status are performed.
1077 for (i = 0; i < n / 2; i++) {
1078 dl = ni_readl(dev, NI6143_AI_FIFO_DATA_REG);
1080 data = (dl >> 16) & 0xffff;
1081 comedi_buf_write_samples(s, &data, 1);
1083 comedi_buf_write_samples(s, &data, 1);
1086 /* Assume there is a single sample stuck in the FIFO */
1087 /* Get stranded sample into FIFO */
1088 ni_writel(dev, 0x01, NI6143_AI_FIFO_CTRL_REG);
1089 dl = ni_readl(dev, NI6143_AI_FIFO_DATA_REG);
1090 data = (dl >> 16) & 0xffff;
1091 comedi_buf_write_samples(s, &data, 1);
1094 if (n > ARRAY_SIZE(devpriv->ai_fifo_buffer)) {
1095 dev_err(dev->class_dev,
1096 "bug! ai_fifo_buffer too small\n");
1097 async->events |= COMEDI_CB_ERROR;
1100 for (i = 0; i < n; i++) {
1101 devpriv->ai_fifo_buffer[i] =
1102 ni_readw(dev, NI_E_AI_FIFO_DATA_REG);
1104 comedi_buf_write_samples(s, devpriv->ai_fifo_buffer, n);
1108 static void ni_handle_fifo_half_full(struct comedi_device *dev)
1110 const struct ni_board_struct *board = dev->board_ptr;
1111 struct comedi_subdevice *s = dev->read_subdev;
1114 n = board->ai_fifo_depth / 2;
1116 ni_ai_fifo_read(dev, s, n);
1120 /* Empties the AI fifo */
1121 static void ni_handle_fifo_dregs(struct comedi_device *dev)
1123 struct ni_private *devpriv = dev->private;
1124 struct comedi_subdevice *s = dev->read_subdev;
1126 unsigned short data;
1129 if (devpriv->is_611x) {
1130 while ((ni_stc_readw(dev, NISTC_AI_STATUS1_REG) &
1131 NISTC_AI_STATUS1_FIFO_E) == 0) {
1132 dl = ni_readl(dev, NI611X_AI_FIFO_DATA_REG);
1134 /* This may get the hi/lo data in the wrong order */
1136 comedi_buf_write_samples(s, &data, 1);
1138 comedi_buf_write_samples(s, &data, 1);
1140 } else if (devpriv->is_6143) {
1142 while (ni_readl(dev, NI6143_AI_FIFO_STATUS_REG) & 0x04) {
1143 dl = ni_readl(dev, NI6143_AI_FIFO_DATA_REG);
1145 /* This may get the hi/lo data in the wrong order */
1147 comedi_buf_write_samples(s, &data, 1);
1149 comedi_buf_write_samples(s, &data, 1);
1152 /* Check if stranded sample is present */
1153 if (ni_readl(dev, NI6143_AI_FIFO_STATUS_REG) & 0x01) {
1154 /* Get stranded sample into FIFO */
1155 ni_writel(dev, 0x01, NI6143_AI_FIFO_CTRL_REG);
1156 dl = ni_readl(dev, NI6143_AI_FIFO_DATA_REG);
1157 data = (dl >> 16) & 0xffff;
1158 comedi_buf_write_samples(s, &data, 1);
1162 unsigned short fe; /* fifo empty */
1164 fe = ni_stc_readw(dev, NISTC_AI_STATUS1_REG) &
1165 NISTC_AI_STATUS1_FIFO_E;
1168 i < ARRAY_SIZE(devpriv->ai_fifo_buffer); i++) {
1169 fe = ni_stc_readw(dev, NISTC_AI_STATUS1_REG) &
1170 NISTC_AI_STATUS1_FIFO_E;
1173 devpriv->ai_fifo_buffer[i] =
1174 ni_readw(dev, NI_E_AI_FIFO_DATA_REG);
1176 comedi_buf_write_samples(s, devpriv->ai_fifo_buffer, i);
1181 static void get_last_sample_611x(struct comedi_device *dev)
1183 struct ni_private *devpriv = dev->private;
1184 struct comedi_subdevice *s = dev->read_subdev;
1185 unsigned short data;
1188 if (!devpriv->is_611x)
1191 /* Check if there's a single sample stuck in the FIFO */
1192 if (ni_readb(dev, NI_E_STATUS_REG) & 0x80) {
1193 dl = ni_readl(dev, NI611X_AI_FIFO_DATA_REG);
1195 comedi_buf_write_samples(s, &data, 1);
1199 static void get_last_sample_6143(struct comedi_device *dev)
1201 struct ni_private *devpriv = dev->private;
1202 struct comedi_subdevice *s = dev->read_subdev;
1203 unsigned short data;
1206 if (!devpriv->is_6143)
1209 /* Check if there's a single sample stuck in the FIFO */
1210 if (ni_readl(dev, NI6143_AI_FIFO_STATUS_REG) & 0x01) {
1211 /* Get stranded sample into FIFO */
1212 ni_writel(dev, 0x01, NI6143_AI_FIFO_CTRL_REG);
1213 dl = ni_readl(dev, NI6143_AI_FIFO_DATA_REG);
1215 /* This may get the hi/lo data in the wrong order */
1216 data = (dl >> 16) & 0xffff;
1217 comedi_buf_write_samples(s, &data, 1);
1221 static void shutdown_ai_command(struct comedi_device *dev)
1223 struct comedi_subdevice *s = dev->read_subdev;
1226 ni_ai_drain_dma(dev);
1228 ni_handle_fifo_dregs(dev);
1229 get_last_sample_611x(dev);
1230 get_last_sample_6143(dev);
1232 s->async->events |= COMEDI_CB_EOA;
1235 static void ni_handle_eos(struct comedi_device *dev, struct comedi_subdevice *s)
1237 struct ni_private *devpriv = dev->private;
1239 if (devpriv->aimode == AIMODE_SCAN) {
1241 static const int timeout = 10;
1244 for (i = 0; i < timeout; i++) {
1245 ni_sync_ai_dma(dev);
1246 if ((s->async->events & COMEDI_CB_EOS))
1251 ni_handle_fifo_dregs(dev);
1252 s->async->events |= COMEDI_CB_EOS;
1255 /* handle special case of single scan */
1256 if (devpriv->ai_cmd2 & NISTC_AI_CMD2_END_ON_EOS)
1257 shutdown_ai_command(dev);
1260 static void handle_gpct_interrupt(struct comedi_device *dev,
1261 unsigned short counter_index)
1264 struct ni_private *devpriv = dev->private;
1265 struct comedi_subdevice *s;
1267 s = &dev->subdevices[NI_GPCT_SUBDEV(counter_index)];
1269 ni_tio_handle_interrupt(&devpriv->counter_dev->counters[counter_index],
1271 comedi_handle_events(dev, s);
1275 static void ack_a_interrupt(struct comedi_device *dev, unsigned short a_status)
1277 unsigned short ack = 0;
1279 if (a_status & NISTC_AI_STATUS1_SC_TC)
1280 ack |= NISTC_INTA_ACK_AI_SC_TC;
1281 if (a_status & NISTC_AI_STATUS1_START1)
1282 ack |= NISTC_INTA_ACK_AI_START1;
1283 if (a_status & NISTC_AI_STATUS1_START)
1284 ack |= NISTC_INTA_ACK_AI_START;
1285 if (a_status & NISTC_AI_STATUS1_STOP)
1286 ack |= NISTC_INTA_ACK_AI_STOP;
1288 ni_stc_writew(dev, ack, NISTC_INTA_ACK_REG);
1291 static void handle_a_interrupt(struct comedi_device *dev,
1292 struct comedi_subdevice *s,
1293 unsigned short status)
1295 struct comedi_cmd *cmd = &s->async->cmd;
1297 /* test for all uncommon interrupt events at the same time */
1298 if (status & (NISTC_AI_STATUS1_ERR |
1299 NISTC_AI_STATUS1_SC_TC | NISTC_AI_STATUS1_START1)) {
1300 if (status == 0xffff) {
1301 dev_err(dev->class_dev, "Card removed?\n");
1303 * We probably aren't even running a command now,
1304 * so it's a good idea to be careful.
1306 if (comedi_is_subdevice_running(s))
1307 s->async->events |= COMEDI_CB_ERROR;
1310 if (status & NISTC_AI_STATUS1_ERR) {
1311 dev_err(dev->class_dev, "ai error a_status=%04x\n",
1314 shutdown_ai_command(dev);
1316 s->async->events |= COMEDI_CB_ERROR;
1317 if (status & NISTC_AI_STATUS1_OVER)
1318 s->async->events |= COMEDI_CB_OVERFLOW;
1321 if (status & NISTC_AI_STATUS1_SC_TC) {
1322 if (cmd->stop_src == TRIG_COUNT)
1323 shutdown_ai_command(dev);
1327 if (status & NISTC_AI_STATUS1_FIFO_HF) {
1329 static const int timeout = 10;
1331 * PCMCIA cards (at least 6036) seem to stop producing
1332 * interrupts if we fail to get the fifo less than half
1333 * full, so loop to be sure.
1335 for (i = 0; i < timeout; ++i) {
1336 ni_handle_fifo_half_full(dev);
1337 if ((ni_stc_readw(dev, NISTC_AI_STATUS1_REG) &
1338 NISTC_AI_STATUS1_FIFO_HF) == 0)
1342 #endif /* !PCIDMA */
1344 if (status & NISTC_AI_STATUS1_STOP)
1345 ni_handle_eos(dev, s);
1348 static void ack_b_interrupt(struct comedi_device *dev, unsigned short b_status)
1350 unsigned short ack = 0;
1352 if (b_status & NISTC_AO_STATUS1_BC_TC)
1353 ack |= NISTC_INTB_ACK_AO_BC_TC;
1354 if (b_status & NISTC_AO_STATUS1_OVERRUN)
1355 ack |= NISTC_INTB_ACK_AO_ERR;
1356 if (b_status & NISTC_AO_STATUS1_START)
1357 ack |= NISTC_INTB_ACK_AO_START;
1358 if (b_status & NISTC_AO_STATUS1_START1)
1359 ack |= NISTC_INTB_ACK_AO_START1;
1360 if (b_status & NISTC_AO_STATUS1_UC_TC)
1361 ack |= NISTC_INTB_ACK_AO_UC_TC;
1362 if (b_status & NISTC_AO_STATUS1_UI2_TC)
1363 ack |= NISTC_INTB_ACK_AO_UI2_TC;
1364 if (b_status & NISTC_AO_STATUS1_UPDATE)
1365 ack |= NISTC_INTB_ACK_AO_UPDATE;
1367 ni_stc_writew(dev, ack, NISTC_INTB_ACK_REG);
1370 static void handle_b_interrupt(struct comedi_device *dev,
1371 struct comedi_subdevice *s,
1372 unsigned short b_status)
1374 if (b_status == 0xffff)
1376 if (b_status & NISTC_AO_STATUS1_OVERRUN) {
1377 dev_err(dev->class_dev,
1378 "AO FIFO underrun status=0x%04x status2=0x%04x\n",
1379 b_status, ni_stc_readw(dev, NISTC_AO_STATUS2_REG));
1380 s->async->events |= COMEDI_CB_OVERFLOW;
1383 if (s->async->cmd.stop_src != TRIG_NONE &&
1384 b_status & NISTC_AO_STATUS1_BC_TC)
1385 s->async->events |= COMEDI_CB_EOA;
1388 if (b_status & NISTC_AO_STATUS1_FIFO_REQ) {
1391 ret = ni_ao_fifo_half_empty(dev, s);
1393 dev_err(dev->class_dev, "AO buffer underrun\n");
1394 ni_set_bits(dev, NISTC_INTB_ENA_REG,
1395 NISTC_INTB_ENA_AO_FIFO |
1396 NISTC_INTB_ENA_AO_ERR, 0);
1397 s->async->events |= COMEDI_CB_OVERFLOW;
1403 static void ni_ai_munge(struct comedi_device *dev, struct comedi_subdevice *s,
1404 void *data, unsigned int num_bytes,
1405 unsigned int chan_index)
1407 struct ni_private *devpriv = dev->private;
1408 struct comedi_async *async = s->async;
1409 struct comedi_cmd *cmd = &async->cmd;
1410 unsigned int nsamples = comedi_bytes_to_samples(s, num_bytes);
1411 unsigned short *array = data;
1412 unsigned int *larray = data;
1415 __le16 *barray = data;
1416 __le32 *blarray = data;
1419 for (i = 0; i < nsamples; i++) {
1421 if (s->subdev_flags & SDF_LSAMPL)
1422 larray[i] = le32_to_cpu(blarray[i]);
1424 array[i] = le16_to_cpu(barray[i]);
1426 if (s->subdev_flags & SDF_LSAMPL)
1427 larray[i] += devpriv->ai_offset[chan_index];
1429 array[i] += devpriv->ai_offset[chan_index];
1431 chan_index %= cmd->chanlist_len;
1437 static int ni_ai_setup_MITE_dma(struct comedi_device *dev)
1439 struct ni_private *devpriv = dev->private;
1440 struct comedi_subdevice *s = dev->read_subdev;
1442 unsigned long flags;
1444 retval = ni_request_ai_mite_channel(dev);
1448 /* write alloc the entire buffer */
1449 comedi_buf_write_alloc(s, s->async->prealloc_bufsz);
1451 spin_lock_irqsave(&devpriv->mite_channel_lock, flags);
1452 if (!devpriv->ai_mite_chan) {
1453 spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags);
1457 if (devpriv->is_611x || devpriv->is_6143)
1458 mite_prep_dma(devpriv->ai_mite_chan, 32, 16);
1459 else if (devpriv->is_628x)
1460 mite_prep_dma(devpriv->ai_mite_chan, 32, 32);
1462 mite_prep_dma(devpriv->ai_mite_chan, 16, 16);
1465 mite_dma_arm(devpriv->ai_mite_chan);
1466 spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags);
1471 static int ni_ao_setup_MITE_dma(struct comedi_device *dev)
1473 struct ni_private *devpriv = dev->private;
1474 struct comedi_subdevice *s = dev->write_subdev;
1476 unsigned long flags;
1478 retval = ni_request_ao_mite_channel(dev);
1482 /* read alloc the entire buffer */
1483 comedi_buf_read_alloc(s, s->async->prealloc_bufsz);
1485 spin_lock_irqsave(&devpriv->mite_channel_lock, flags);
1486 if (devpriv->ao_mite_chan) {
1487 if (devpriv->is_611x || devpriv->is_6713) {
1488 mite_prep_dma(devpriv->ao_mite_chan, 32, 32);
1491 * Doing 32 instead of 16 bit wide transfers from
1492 * memory makes the mite do 32 bit pci transfers,
1493 * doubling pci bandwidth.
1495 mite_prep_dma(devpriv->ao_mite_chan, 16, 32);
1497 mite_dma_arm(devpriv->ao_mite_chan);
1501 spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags);
1509 * used for both cancel ioctl and board initialization
1511 * this is pretty harsh for a cancel, but it works...
1513 static int ni_ai_reset(struct comedi_device *dev, struct comedi_subdevice *s)
1515 struct ni_private *devpriv = dev->private;
1516 unsigned int ai_personal;
1517 unsigned int ai_out_ctrl;
1519 ni_release_ai_mite_channel(dev);
1520 /* ai configuration */
1521 ni_stc_writew(dev, NISTC_RESET_AI_CFG_START | NISTC_RESET_AI,
1524 ni_set_bits(dev, NISTC_INTA_ENA_REG, NISTC_INTA_ENA_AI_MASK, 0);
1526 ni_clear_ai_fifo(dev);
1528 if (!devpriv->is_6143)
1529 ni_writeb(dev, NI_E_MISC_CMD_EXT_ATRIG, NI_E_MISC_CMD_REG);
1531 ni_stc_writew(dev, NISTC_AI_CMD1_DISARM, NISTC_AI_CMD1_REG);
1532 ni_stc_writew(dev, NISTC_AI_MODE1_START_STOP |
1534 /*| NISTC_AI_MODE1_TRIGGER_ONCE */,
1535 NISTC_AI_MODE1_REG);
1536 ni_stc_writew(dev, 0, NISTC_AI_MODE2_REG);
1537 /* generate FIFO interrupts on non-empty */
1538 ni_stc_writew(dev, NISTC_AI_MODE3_FIFO_MODE_NE,
1539 NISTC_AI_MODE3_REG);
1541 ai_personal = NISTC_AI_PERSONAL_SHIFTIN_PW |
1542 NISTC_AI_PERSONAL_SOC_POLARITY |
1543 NISTC_AI_PERSONAL_LOCALMUX_CLK_PW;
1544 ai_out_ctrl = NISTC_AI_OUT_CTRL_SCAN_IN_PROG_SEL(3) |
1545 NISTC_AI_OUT_CTRL_EXTMUX_CLK_SEL(0) |
1546 NISTC_AI_OUT_CTRL_LOCALMUX_CLK_SEL(2) |
1547 NISTC_AI_OUT_CTRL_SC_TC_SEL(3);
1548 if (devpriv->is_611x) {
1549 ai_out_ctrl |= NISTC_AI_OUT_CTRL_CONVERT_HIGH;
1550 } else if (devpriv->is_6143) {
1551 ai_out_ctrl |= NISTC_AI_OUT_CTRL_CONVERT_LOW;
1553 ai_personal |= NISTC_AI_PERSONAL_CONVERT_PW;
1554 if (devpriv->is_622x)
1555 ai_out_ctrl |= NISTC_AI_OUT_CTRL_CONVERT_HIGH;
1557 ai_out_ctrl |= NISTC_AI_OUT_CTRL_CONVERT_LOW;
1559 ni_stc_writew(dev, ai_personal, NISTC_AI_PERSONAL_REG);
1560 ni_stc_writew(dev, ai_out_ctrl, NISTC_AI_OUT_CTRL_REG);
1562 /* the following registers should not be changed, because there
1563 * are no backup registers in devpriv. If you want to change
1564 * any of these, add a backup register and other appropriate code:
1565 * NISTC_AI_MODE1_REG
1566 * NISTC_AI_MODE3_REG
1567 * NISTC_AI_PERSONAL_REG
1568 * NISTC_AI_OUT_CTRL_REG
1571 /* clear interrupts */
1572 ni_stc_writew(dev, NISTC_INTA_ACK_AI_ALL, NISTC_INTA_ACK_REG);
1574 ni_stc_writew(dev, NISTC_RESET_AI_CFG_END, NISTC_RESET_REG);
1579 static int ni_ai_poll(struct comedi_device *dev, struct comedi_subdevice *s)
1581 unsigned long flags;
1584 /* lock to avoid race with interrupt handler */
1585 spin_lock_irqsave(&dev->spinlock, flags);
1587 ni_handle_fifo_dregs(dev);
1589 ni_sync_ai_dma(dev);
1591 count = comedi_buf_n_bytes_ready(s);
1592 spin_unlock_irqrestore(&dev->spinlock, flags);
1597 static void ni_prime_channelgain_list(struct comedi_device *dev)
1601 ni_stc_writew(dev, NISTC_AI_CMD1_CONVERT_PULSE, NISTC_AI_CMD1_REG);
1602 for (i = 0; i < NI_TIMEOUT; ++i) {
1603 if (!(ni_stc_readw(dev, NISTC_AI_STATUS1_REG) &
1604 NISTC_AI_STATUS1_FIFO_E)) {
1605 ni_stc_writew(dev, 1, NISTC_ADC_FIFO_CLR_REG);
1610 dev_err(dev->class_dev, "timeout loading channel/gain list\n");
1613 static void ni_m_series_load_channelgain_list(struct comedi_device *dev,
1614 unsigned int n_chan,
1617 const struct ni_board_struct *board = dev->board_ptr;
1618 struct ni_private *devpriv = dev->private;
1619 unsigned int chan, range, aref;
1621 unsigned int dither;
1622 unsigned int range_code;
1624 ni_stc_writew(dev, 1, NISTC_CFG_MEM_CLR_REG);
1626 if ((list[0] & CR_ALT_SOURCE)) {
1627 unsigned int bypass_bits;
1629 chan = CR_CHAN(list[0]);
1630 range = CR_RANGE(list[0]);
1631 range_code = ni_gainlkup[board->gainlkup][range];
1632 dither = (list[0] & CR_ALT_FILTER) != 0;
1633 bypass_bits = NI_M_CFG_BYPASS_FIFO |
1634 NI_M_CFG_BYPASS_AI_CHAN(chan) |
1635 NI_M_CFG_BYPASS_AI_GAIN(range_code) |
1636 devpriv->ai_calib_source;
1638 bypass_bits |= NI_M_CFG_BYPASS_AI_DITHER;
1639 /* don't use 2's complement encoding */
1640 bypass_bits |= NI_M_CFG_BYPASS_AI_POLARITY;
1641 ni_writel(dev, bypass_bits, NI_M_CFG_BYPASS_FIFO_REG);
1643 ni_writel(dev, 0, NI_M_CFG_BYPASS_FIFO_REG);
1645 for (i = 0; i < n_chan; i++) {
1646 unsigned int config_bits = 0;
1648 chan = CR_CHAN(list[i]);
1649 aref = CR_AREF(list[i]);
1650 range = CR_RANGE(list[i]);
1651 dither = (list[i] & CR_ALT_FILTER) != 0;
1653 range_code = ni_gainlkup[board->gainlkup][range];
1654 devpriv->ai_offset[i] = 0;
1657 config_bits |= NI_M_AI_CFG_CHAN_TYPE_DIFF;
1660 config_bits |= NI_M_AI_CFG_CHAN_TYPE_COMMON;
1663 config_bits |= NI_M_AI_CFG_CHAN_TYPE_GROUND;
1668 config_bits |= NI_M_AI_CFG_CHAN_SEL(chan);
1669 config_bits |= NI_M_AI_CFG_BANK_SEL(chan);
1670 config_bits |= NI_M_AI_CFG_GAIN(range_code);
1671 if (i == n_chan - 1)
1672 config_bits |= NI_M_AI_CFG_LAST_CHAN;
1674 config_bits |= NI_M_AI_CFG_DITHER;
1675 /* don't use 2's complement encoding */
1676 config_bits |= NI_M_AI_CFG_POLARITY;
1677 ni_writew(dev, config_bits, NI_M_AI_CFG_FIFO_DATA_REG);
1679 ni_prime_channelgain_list(dev);
1683 * Notes on the 6110 and 6111:
1684 * These boards a slightly different than the rest of the series, since
1685 * they have multiple A/D converters.
1686 * From the driver side, the configuration memory is a
1688 * Configuration Memory Low:
1690 * bit 8: unipolar/bipolar (should be 0 for bipolar)
1691 * bits 0-3: gain. This is 4 bits instead of 3 for the other boards
1692 * 1001 gain=0.1 (+/- 50)
1701 * Configuration Memory High:
1702 * bits 12-14: Channel Type
1703 * 001 for differential
1704 * 000 for calibration
1705 * bit 11: coupling (this is not currently handled)
1709 * valid channels are 0-3
1711 static void ni_load_channelgain_list(struct comedi_device *dev,
1712 struct comedi_subdevice *s,
1713 unsigned int n_chan, unsigned int *list)
1715 const struct ni_board_struct *board = dev->board_ptr;
1716 struct ni_private *devpriv = dev->private;
1717 unsigned int offset = (s->maxdata + 1) >> 1;
1718 unsigned int chan, range, aref;
1720 unsigned int hi, lo;
1721 unsigned int dither;
1723 if (devpriv->is_m_series) {
1724 ni_m_series_load_channelgain_list(dev, n_chan, list);
1727 if (n_chan == 1 && !devpriv->is_611x && !devpriv->is_6143) {
1728 if (devpriv->changain_state &&
1729 devpriv->changain_spec == list[0]) {
1733 devpriv->changain_state = 1;
1734 devpriv->changain_spec = list[0];
1736 devpriv->changain_state = 0;
1739 ni_stc_writew(dev, 1, NISTC_CFG_MEM_CLR_REG);
1741 /* Set up Calibration mode if required */
1742 if (devpriv->is_6143) {
1743 if ((list[0] & CR_ALT_SOURCE) &&
1744 !devpriv->ai_calib_source_enabled) {
1745 /* Strobe Relay enable bit */
1746 ni_writew(dev, devpriv->ai_calib_source |
1747 NI6143_CALIB_CHAN_RELAY_ON,
1748 NI6143_CALIB_CHAN_REG);
1749 ni_writew(dev, devpriv->ai_calib_source,
1750 NI6143_CALIB_CHAN_REG);
1751 devpriv->ai_calib_source_enabled = 1;
1752 /* Allow relays to change */
1753 msleep_interruptible(100);
1754 } else if (!(list[0] & CR_ALT_SOURCE) &&
1755 devpriv->ai_calib_source_enabled) {
1756 /* Strobe Relay disable bit */
1757 ni_writew(dev, devpriv->ai_calib_source |
1758 NI6143_CALIB_CHAN_RELAY_OFF,
1759 NI6143_CALIB_CHAN_REG);
1760 ni_writew(dev, devpriv->ai_calib_source,
1761 NI6143_CALIB_CHAN_REG);
1762 devpriv->ai_calib_source_enabled = 0;
1763 /* Allow relays to change */
1764 msleep_interruptible(100);
1768 for (i = 0; i < n_chan; i++) {
1769 if (!devpriv->is_6143 && (list[i] & CR_ALT_SOURCE))
1770 chan = devpriv->ai_calib_source;
1772 chan = CR_CHAN(list[i]);
1773 aref = CR_AREF(list[i]);
1774 range = CR_RANGE(list[i]);
1775 dither = (list[i] & CR_ALT_FILTER) != 0;
1777 /* fix the external/internal range differences */
1778 range = ni_gainlkup[board->gainlkup][range];
1779 if (devpriv->is_611x)
1780 devpriv->ai_offset[i] = offset;
1782 devpriv->ai_offset[i] = (range & 0x100) ? 0 : offset;
1785 if ((list[i] & CR_ALT_SOURCE)) {
1786 if (devpriv->is_611x)
1787 ni_writew(dev, CR_CHAN(list[i]) & 0x0003,
1788 NI611X_CALIB_CHAN_SEL_REG);
1790 if (devpriv->is_611x)
1792 else if (devpriv->is_6143)
1796 hi |= NI_E_AI_CFG_HI_TYPE_DIFF;
1799 hi |= NI_E_AI_CFG_HI_TYPE_COMMON;
1802 hi |= NI_E_AI_CFG_HI_TYPE_GROUND;
1808 hi |= NI_E_AI_CFG_HI_CHAN(chan);
1810 ni_writew(dev, hi, NI_E_AI_CFG_HI_REG);
1812 if (!devpriv->is_6143) {
1813 lo = NI_E_AI_CFG_LO_GAIN(range);
1815 if (i == n_chan - 1)
1816 lo |= NI_E_AI_CFG_LO_LAST_CHAN;
1818 lo |= NI_E_AI_CFG_LO_DITHER;
1820 ni_writew(dev, lo, NI_E_AI_CFG_LO_REG);
1824 /* prime the channel/gain list */
1825 if (!devpriv->is_611x && !devpriv->is_6143)
1826 ni_prime_channelgain_list(dev);
1829 static int ni_ai_insn_read(struct comedi_device *dev,
1830 struct comedi_subdevice *s,
1831 struct comedi_insn *insn,
1834 struct ni_private *devpriv = dev->private;
1835 unsigned int mask = s->maxdata;
1837 unsigned int signbits;
1840 ni_load_channelgain_list(dev, s, 1, &insn->chanspec);
1842 ni_clear_ai_fifo(dev);
1844 signbits = devpriv->ai_offset[0];
1845 if (devpriv->is_611x) {
1846 for (n = 0; n < num_adc_stages_611x; n++) {
1847 ni_stc_writew(dev, NISTC_AI_CMD1_CONVERT_PULSE,
1851 for (n = 0; n < insn->n; n++) {
1852 ni_stc_writew(dev, NISTC_AI_CMD1_CONVERT_PULSE,
1854 /* The 611x has screwy 32-bit FIFOs. */
1856 for (i = 0; i < NI_TIMEOUT; i++) {
1857 if (ni_readb(dev, NI_E_STATUS_REG) & 0x80) {
1859 NI611X_AI_FIFO_DATA_REG);
1864 if (!(ni_stc_readw(dev, NISTC_AI_STATUS1_REG) &
1865 NISTC_AI_STATUS1_FIFO_E)) {
1867 NI611X_AI_FIFO_DATA_REG);
1872 if (i == NI_TIMEOUT) {
1873 dev_err(dev->class_dev, "timeout\n");
1877 data[n] = d & 0xffff;
1879 } else if (devpriv->is_6143) {
1880 for (n = 0; n < insn->n; n++) {
1881 ni_stc_writew(dev, NISTC_AI_CMD1_CONVERT_PULSE,
1885 * The 6143 has 32-bit FIFOs. You need to strobe a
1886 * bit to move a single 16bit stranded sample into
1890 for (i = 0; i < NI_TIMEOUT; i++) {
1891 if (ni_readl(dev, NI6143_AI_FIFO_STATUS_REG) &
1893 /* Get stranded sample into FIFO */
1894 ni_writel(dev, 0x01,
1895 NI6143_AI_FIFO_CTRL_REG);
1897 NI6143_AI_FIFO_DATA_REG);
1901 if (i == NI_TIMEOUT) {
1902 dev_err(dev->class_dev, "timeout\n");
1905 data[n] = (((d >> 16) & 0xFFFF) + signbits) & 0xFFFF;
1908 for (n = 0; n < insn->n; n++) {
1909 ni_stc_writew(dev, NISTC_AI_CMD1_CONVERT_PULSE,
1911 for (i = 0; i < NI_TIMEOUT; i++) {
1912 if (!(ni_stc_readw(dev, NISTC_AI_STATUS1_REG) &
1913 NISTC_AI_STATUS1_FIFO_E))
1916 if (i == NI_TIMEOUT) {
1917 dev_err(dev->class_dev, "timeout\n");
1920 if (devpriv->is_m_series) {
1921 d = ni_readl(dev, NI_M_AI_FIFO_DATA_REG);
1925 d = ni_readw(dev, NI_E_AI_FIFO_DATA_REG);
1927 data[n] = d & 0xffff;
1934 static int ni_ns_to_timer(const struct comedi_device *dev,
1935 unsigned int nanosec, unsigned int flags)
1937 struct ni_private *devpriv = dev->private;
1940 switch (flags & CMDF_ROUND_MASK) {
1941 case CMDF_ROUND_NEAREST:
1943 divider = DIV_ROUND_CLOSEST(nanosec, devpriv->clock_ns);
1945 case CMDF_ROUND_DOWN:
1946 divider = (nanosec) / devpriv->clock_ns;
1949 divider = DIV_ROUND_UP(nanosec, devpriv->clock_ns);
1955 static unsigned int ni_timer_to_ns(const struct comedi_device *dev, int timer)
1957 struct ni_private *devpriv = dev->private;
1959 return devpriv->clock_ns * (timer + 1);
1962 static void ni_cmd_set_mite_transfer(struct mite_ring *ring,
1963 struct comedi_subdevice *sdev,
1964 const struct comedi_cmd *cmd,
1965 unsigned int max_count) {
1967 unsigned int nbytes = max_count;
1969 if (cmd->stop_arg > 0 && cmd->stop_arg < max_count)
1970 nbytes = cmd->stop_arg;
1971 nbytes *= comedi_bytes_per_scan(sdev);
1973 if (nbytes > sdev->async->prealloc_bufsz) {
1974 if (cmd->stop_arg > 0)
1975 dev_err(sdev->device->class_dev,
1976 "ni_cmd_set_mite_transfer: tried exact data transfer limits greater than buffer size\n");
1979 * we can only transfer up to the size of the buffer. In this
1980 * case, the user is expected to continue to write into the
1981 * comedi buffer (already implemented as a ring buffer).
1983 nbytes = sdev->async->prealloc_bufsz;
1986 mite_init_ring_descriptors(ring, sdev, nbytes);
1988 dev_err(sdev->device->class_dev,
1989 "ni_cmd_set_mite_transfer: exact data transfer limits not implemented yet without DMA\n");
1993 static unsigned int ni_min_ai_scan_period_ns(struct comedi_device *dev,
1994 unsigned int num_channels)
1996 const struct ni_board_struct *board = dev->board_ptr;
1997 struct ni_private *devpriv = dev->private;
1999 /* simultaneously-sampled inputs */
2000 if (devpriv->is_611x || devpriv->is_6143)
2001 return board->ai_speed;
2003 /* multiplexed inputs */
2004 return board->ai_speed * num_channels;
2007 static int ni_ai_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s,
2008 struct comedi_cmd *cmd)
2010 const struct ni_board_struct *board = dev->board_ptr;
2011 struct ni_private *devpriv = dev->private;
2014 unsigned int sources;
2016 /* Step 1 : check if triggers are trivially valid */
2018 err |= comedi_check_trigger_src(&cmd->start_src,
2019 TRIG_NOW | TRIG_INT | TRIG_EXT);
2020 err |= comedi_check_trigger_src(&cmd->scan_begin_src,
2021 TRIG_TIMER | TRIG_EXT);
2023 sources = TRIG_TIMER | TRIG_EXT;
2024 if (devpriv->is_611x || devpriv->is_6143)
2025 sources |= TRIG_NOW;
2026 err |= comedi_check_trigger_src(&cmd->convert_src, sources);
2028 err |= comedi_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
2029 err |= comedi_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE);
2034 /* Step 2a : make sure trigger sources are unique */
2036 err |= comedi_check_trigger_is_unique(cmd->start_src);
2037 err |= comedi_check_trigger_is_unique(cmd->scan_begin_src);
2038 err |= comedi_check_trigger_is_unique(cmd->convert_src);
2039 err |= comedi_check_trigger_is_unique(cmd->stop_src);
2041 /* Step 2b : and mutually compatible */
2046 /* Step 3: check if arguments are trivially valid */
2048 switch (cmd->start_src) {
2051 err |= comedi_check_trigger_arg_is(&cmd->start_arg, 0);
2054 tmp = CR_CHAN(cmd->start_arg);
2058 tmp |= (cmd->start_arg & (CR_INVERT | CR_EDGE));
2059 err |= comedi_check_trigger_arg_is(&cmd->start_arg, tmp);
2063 if (cmd->scan_begin_src == TRIG_TIMER) {
2064 err |= comedi_check_trigger_arg_min(&cmd->scan_begin_arg,
2065 ni_min_ai_scan_period_ns(dev, cmd->chanlist_len));
2066 err |= comedi_check_trigger_arg_max(&cmd->scan_begin_arg,
2069 } else if (cmd->scan_begin_src == TRIG_EXT) {
2070 /* external trigger */
2071 unsigned int tmp = CR_CHAN(cmd->scan_begin_arg);
2075 tmp |= (cmd->scan_begin_arg & (CR_INVERT | CR_EDGE));
2076 err |= comedi_check_trigger_arg_is(&cmd->scan_begin_arg, tmp);
2077 } else { /* TRIG_OTHER */
2078 err |= comedi_check_trigger_arg_is(&cmd->scan_begin_arg, 0);
2081 if (cmd->convert_src == TRIG_TIMER) {
2082 if (devpriv->is_611x || devpriv->is_6143) {
2083 err |= comedi_check_trigger_arg_is(&cmd->convert_arg,
2086 err |= comedi_check_trigger_arg_min(&cmd->convert_arg,
2088 err |= comedi_check_trigger_arg_max(&cmd->convert_arg,
2092 } else if (cmd->convert_src == TRIG_EXT) {
2093 /* external trigger */
2094 unsigned int tmp = CR_CHAN(cmd->convert_arg);
2098 tmp |= (cmd->convert_arg & (CR_ALT_FILTER | CR_INVERT));
2099 err |= comedi_check_trigger_arg_is(&cmd->convert_arg, tmp);
2100 } else if (cmd->convert_src == TRIG_NOW) {
2101 err |= comedi_check_trigger_arg_is(&cmd->convert_arg, 0);
2104 err |= comedi_check_trigger_arg_is(&cmd->scan_end_arg,
2107 if (cmd->stop_src == TRIG_COUNT) {
2108 unsigned int max_count = 0x01000000;
2110 if (devpriv->is_611x)
2111 max_count -= num_adc_stages_611x;
2112 err |= comedi_check_trigger_arg_max(&cmd->stop_arg, max_count);
2113 err |= comedi_check_trigger_arg_min(&cmd->stop_arg, 1);
2116 err |= comedi_check_trigger_arg_is(&cmd->stop_arg, 0);
2122 /* step 4: fix up any arguments */
2124 if (cmd->scan_begin_src == TRIG_TIMER) {
2125 tmp = cmd->scan_begin_arg;
2126 cmd->scan_begin_arg =
2127 ni_timer_to_ns(dev, ni_ns_to_timer(dev,
2128 cmd->scan_begin_arg,
2130 if (tmp != cmd->scan_begin_arg)
2133 if (cmd->convert_src == TRIG_TIMER) {
2134 if (!devpriv->is_611x && !devpriv->is_6143) {
2135 tmp = cmd->convert_arg;
2137 ni_timer_to_ns(dev, ni_ns_to_timer(dev,
2140 if (tmp != cmd->convert_arg)
2142 if (cmd->scan_begin_src == TRIG_TIMER &&
2143 cmd->scan_begin_arg <
2144 cmd->convert_arg * cmd->scan_end_arg) {
2145 cmd->scan_begin_arg =
2146 cmd->convert_arg * cmd->scan_end_arg;
2158 static int ni_ai_inttrig(struct comedi_device *dev,
2159 struct comedi_subdevice *s,
2160 unsigned int trig_num)
2162 struct ni_private *devpriv = dev->private;
2163 struct comedi_cmd *cmd = &s->async->cmd;
2165 if (trig_num != cmd->start_arg)
2168 ni_stc_writew(dev, NISTC_AI_CMD2_START1_PULSE | devpriv->ai_cmd2,
2170 s->async->inttrig = NULL;
2175 static int ni_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
2177 struct ni_private *devpriv = dev->private;
2178 const struct comedi_cmd *cmd = &s->async->cmd;
2180 int mode1 = 0; /* mode1 is needed for both stop and convert */
2182 int start_stop_select = 0;
2183 unsigned int stop_count;
2184 int interrupt_a_enable = 0;
2185 unsigned int ai_trig;
2187 if (dev->irq == 0) {
2188 dev_err(dev->class_dev, "cannot run command without an irq\n");
2191 ni_clear_ai_fifo(dev);
2193 ni_load_channelgain_list(dev, s, cmd->chanlist_len, cmd->chanlist);
2195 /* start configuration */
2196 ni_stc_writew(dev, NISTC_RESET_AI_CFG_START, NISTC_RESET_REG);
2199 * Disable analog triggering for now, since it interferes
2200 * with the use of pfi0.
2202 devpriv->an_trig_etc_reg &= ~NISTC_ATRIG_ETC_ENA;
2203 ni_stc_writew(dev, devpriv->an_trig_etc_reg, NISTC_ATRIG_ETC_REG);
2205 ai_trig = NISTC_AI_TRIG_START2_SEL(0) | NISTC_AI_TRIG_START1_SYNC;
2206 switch (cmd->start_src) {
2209 ai_trig |= NISTC_AI_TRIG_START1_EDGE |
2210 NISTC_AI_TRIG_START1_SEL(0);
2213 ai_trig |= NISTC_AI_TRIG_START1_SEL(CR_CHAN(cmd->start_arg) +
2216 if (cmd->start_arg & CR_INVERT)
2217 ai_trig |= NISTC_AI_TRIG_START1_POLARITY;
2218 if (cmd->start_arg & CR_EDGE)
2219 ai_trig |= NISTC_AI_TRIG_START1_EDGE;
2222 ni_stc_writew(dev, ai_trig, NISTC_AI_TRIG_SEL_REG);
2224 mode2 &= ~NISTC_AI_MODE2_PRE_TRIGGER;
2225 mode2 &= ~NISTC_AI_MODE2_SC_INIT_LOAD_SRC;
2226 mode2 &= ~NISTC_AI_MODE2_SC_RELOAD_MODE;
2227 ni_stc_writew(dev, mode2, NISTC_AI_MODE2_REG);
2229 if (cmd->chanlist_len == 1 || devpriv->is_611x || devpriv->is_6143) {
2231 start_stop_select |= NISTC_AI_STOP_POLARITY |
2232 NISTC_AI_STOP_SEL(31) |
2235 /* ai configuration memory */
2236 start_stop_select |= NISTC_AI_STOP_SEL(19);
2238 ni_stc_writew(dev, start_stop_select, NISTC_AI_START_STOP_REG);
2240 devpriv->ai_cmd2 = 0;
2241 switch (cmd->stop_src) {
2243 stop_count = cmd->stop_arg - 1;
2245 if (devpriv->is_611x) {
2246 /* have to take 3 stage adc pipeline into account */
2247 stop_count += num_adc_stages_611x;
2249 /* stage number of scans */
2250 ni_stc_writel(dev, stop_count, NISTC_AI_SC_LOADA_REG);
2252 mode1 |= NISTC_AI_MODE1_START_STOP |
2253 NISTC_AI_MODE1_RSVD |
2254 NISTC_AI_MODE1_TRIGGER_ONCE;
2255 ni_stc_writew(dev, mode1, NISTC_AI_MODE1_REG);
2256 /* load SC (Scan Count) */
2257 ni_stc_writew(dev, NISTC_AI_CMD1_SC_LOAD, NISTC_AI_CMD1_REG);
2259 if (stop_count == 0) {
2260 devpriv->ai_cmd2 |= NISTC_AI_CMD2_END_ON_EOS;
2261 interrupt_a_enable |= NISTC_INTA_ENA_AI_STOP;
2263 * This is required to get the last sample for
2264 * chanlist_len > 1, not sure why.
2266 if (cmd->chanlist_len > 1)
2267 start_stop_select |= NISTC_AI_STOP_POLARITY |
2272 /* stage number of scans */
2273 ni_stc_writel(dev, 0, NISTC_AI_SC_LOADA_REG);
2275 mode1 |= NISTC_AI_MODE1_START_STOP |
2276 NISTC_AI_MODE1_RSVD |
2277 NISTC_AI_MODE1_CONTINUOUS;
2278 ni_stc_writew(dev, mode1, NISTC_AI_MODE1_REG);
2280 /* load SC (Scan Count) */
2281 ni_stc_writew(dev, NISTC_AI_CMD1_SC_LOAD, NISTC_AI_CMD1_REG);
2285 switch (cmd->scan_begin_src) {
2288 * stop bits for non 611x boards
2289 * NISTC_AI_MODE3_SI_TRIG_DELAY=0
2290 * NISTC_AI_MODE2_PRE_TRIGGER=0
2291 * NISTC_AI_START_STOP_REG:
2292 * NISTC_AI_START_POLARITY=0 (?) rising edge
2293 * NISTC_AI_START_EDGE=1 edge triggered
2294 * NISTC_AI_START_SYNC=1 (?)
2295 * NISTC_AI_START_SEL=0 SI_TC
2296 * NISTC_AI_STOP_POLARITY=0 rising edge
2297 * NISTC_AI_STOP_EDGE=0 level
2298 * NISTC_AI_STOP_SYNC=1
2299 * NISTC_AI_STOP_SEL=19 external pin (configuration mem)
2301 start_stop_select |= NISTC_AI_START_EDGE | NISTC_AI_START_SYNC;
2302 ni_stc_writew(dev, start_stop_select, NISTC_AI_START_STOP_REG);
2304 mode2 &= ~NISTC_AI_MODE2_SI_INIT_LOAD_SRC; /* A */
2305 mode2 |= NISTC_AI_MODE2_SI_RELOAD_MODE(0);
2306 /* mode2 |= NISTC_AI_MODE2_SC_RELOAD_MODE; */
2307 ni_stc_writew(dev, mode2, NISTC_AI_MODE2_REG);
2310 timer = ni_ns_to_timer(dev, cmd->scan_begin_arg,
2311 CMDF_ROUND_NEAREST);
2312 ni_stc_writel(dev, timer, NISTC_AI_SI_LOADA_REG);
2313 ni_stc_writew(dev, NISTC_AI_CMD1_SI_LOAD, NISTC_AI_CMD1_REG);
2316 if (cmd->scan_begin_arg & CR_EDGE)
2317 start_stop_select |= NISTC_AI_START_EDGE;
2318 if (cmd->scan_begin_arg & CR_INVERT) /* falling edge */
2319 start_stop_select |= NISTC_AI_START_POLARITY;
2320 if (cmd->scan_begin_src != cmd->convert_src ||
2321 (cmd->scan_begin_arg & ~CR_EDGE) !=
2322 (cmd->convert_arg & ~CR_EDGE))
2323 start_stop_select |= NISTC_AI_START_SYNC;
2324 start_stop_select |=
2325 NISTC_AI_START_SEL(1 + CR_CHAN(cmd->scan_begin_arg));
2326 ni_stc_writew(dev, start_stop_select, NISTC_AI_START_STOP_REG);
2330 switch (cmd->convert_src) {
2333 if (cmd->convert_arg == 0 || cmd->convert_src == TRIG_NOW)
2336 timer = ni_ns_to_timer(dev, cmd->convert_arg,
2337 CMDF_ROUND_NEAREST);
2338 /* 0,0 does not work */
2339 ni_stc_writew(dev, 1, NISTC_AI_SI2_LOADA_REG);
2340 ni_stc_writew(dev, timer, NISTC_AI_SI2_LOADB_REG);
2342 mode2 &= ~NISTC_AI_MODE2_SI2_INIT_LOAD_SRC; /* A */
2343 mode2 |= NISTC_AI_MODE2_SI2_RELOAD_MODE; /* alternate */
2344 ni_stc_writew(dev, mode2, NISTC_AI_MODE2_REG);
2346 ni_stc_writew(dev, NISTC_AI_CMD1_SI2_LOAD, NISTC_AI_CMD1_REG);
2348 mode2 |= NISTC_AI_MODE2_SI2_INIT_LOAD_SRC; /* B */
2349 mode2 |= NISTC_AI_MODE2_SI2_RELOAD_MODE; /* alternate */
2350 ni_stc_writew(dev, mode2, NISTC_AI_MODE2_REG);
2353 mode1 |= NISTC_AI_MODE1_CONVERT_SRC(1 +
2354 CR_CHAN(cmd->convert_arg));
2355 if ((cmd->convert_arg & CR_INVERT) == 0)
2356 mode1 |= NISTC_AI_MODE1_CONVERT_POLARITY;
2357 ni_stc_writew(dev, mode1, NISTC_AI_MODE1_REG);
2359 mode2 |= NISTC_AI_MODE2_SC_GATE_ENA |
2360 NISTC_AI_MODE2_START_STOP_GATE_ENA;
2361 ni_stc_writew(dev, mode2, NISTC_AI_MODE2_REG);
2367 /* interrupt on FIFO, errors, SC_TC */
2368 interrupt_a_enable |= NISTC_INTA_ENA_AI_ERR |
2369 NISTC_INTA_ENA_AI_SC_TC;
2372 interrupt_a_enable |= NISTC_INTA_ENA_AI_FIFO;
2375 if ((cmd->flags & CMDF_WAKE_EOS) ||
2376 (devpriv->ai_cmd2 & NISTC_AI_CMD2_END_ON_EOS)) {
2377 /* wake on end-of-scan */
2378 devpriv->aimode = AIMODE_SCAN;
2380 devpriv->aimode = AIMODE_HALF_FULL;
2383 switch (devpriv->aimode) {
2384 case AIMODE_HALF_FULL:
2385 /* FIFO interrupts and DMA requests on half-full */
2387 ni_stc_writew(dev, NISTC_AI_MODE3_FIFO_MODE_HF_E,
2388 NISTC_AI_MODE3_REG);
2390 ni_stc_writew(dev, NISTC_AI_MODE3_FIFO_MODE_HF,
2391 NISTC_AI_MODE3_REG);
2395 /*generate FIFO interrupts on non-empty */
2396 ni_stc_writew(dev, NISTC_AI_MODE3_FIFO_MODE_NE,
2397 NISTC_AI_MODE3_REG);
2401 ni_stc_writew(dev, NISTC_AI_MODE3_FIFO_MODE_NE,
2402 NISTC_AI_MODE3_REG);
2404 ni_stc_writew(dev, NISTC_AI_MODE3_FIFO_MODE_HF,
2405 NISTC_AI_MODE3_REG);
2407 interrupt_a_enable |= NISTC_INTA_ENA_AI_STOP;
2413 /* clear interrupts */
2414 ni_stc_writew(dev, NISTC_INTA_ACK_AI_ALL, NISTC_INTA_ACK_REG);
2416 ni_set_bits(dev, NISTC_INTA_ENA_REG, interrupt_a_enable, 1);
2418 /* interrupt on nothing */
2419 ni_set_bits(dev, NISTC_INTA_ENA_REG, ~0, 0);
2421 /* XXX start polling if necessary */
2424 /* end configuration */
2425 ni_stc_writew(dev, NISTC_RESET_AI_CFG_END, NISTC_RESET_REG);
2427 switch (cmd->scan_begin_src) {
2429 ni_stc_writew(dev, NISTC_AI_CMD1_SI2_ARM |
2430 NISTC_AI_CMD1_SI_ARM |
2431 NISTC_AI_CMD1_DIV_ARM |
2432 NISTC_AI_CMD1_SC_ARM,
2436 ni_stc_writew(dev, NISTC_AI_CMD1_SI2_ARM |
2437 NISTC_AI_CMD1_SI_ARM | /* XXX ? */
2438 NISTC_AI_CMD1_DIV_ARM |
2439 NISTC_AI_CMD1_SC_ARM,
2446 int retval = ni_ai_setup_MITE_dma(dev);
2453 if (cmd->start_src == TRIG_NOW) {
2454 ni_stc_writew(dev, NISTC_AI_CMD2_START1_PULSE |
2457 s->async->inttrig = NULL;
2458 } else if (cmd->start_src == TRIG_EXT) {
2459 s->async->inttrig = NULL;
2460 } else { /* TRIG_INT */
2461 s->async->inttrig = ni_ai_inttrig;
2467 static int ni_ai_insn_config(struct comedi_device *dev,
2468 struct comedi_subdevice *s,
2469 struct comedi_insn *insn, unsigned int *data)
2471 struct ni_private *devpriv = dev->private;
2477 case INSN_CONFIG_ALT_SOURCE:
2478 if (devpriv->is_m_series) {
2479 if (data[1] & ~NI_M_CFG_BYPASS_AI_CAL_MASK)
2481 devpriv->ai_calib_source = data[1];
2482 } else if (devpriv->is_6143) {
2483 unsigned int calib_source;
2485 calib_source = data[1] & 0xf;
2487 devpriv->ai_calib_source = calib_source;
2488 ni_writew(dev, calib_source, NI6143_CALIB_CHAN_REG);
2490 unsigned int calib_source;
2491 unsigned int calib_source_adjust;
2493 calib_source = data[1] & 0xf;
2494 calib_source_adjust = (data[1] >> 4) & 0xff;
2496 if (calib_source >= 8)
2498 devpriv->ai_calib_source = calib_source;
2499 if (devpriv->is_611x) {
2500 ni_writeb(dev, calib_source_adjust,
2501 NI611X_CAL_GAIN_SEL_REG);
2512 static void ni_ao_munge(struct comedi_device *dev, struct comedi_subdevice *s,
2513 void *data, unsigned int num_bytes,
2514 unsigned int chan_index)
2516 struct comedi_cmd *cmd = &s->async->cmd;
2517 unsigned int nsamples = comedi_bytes_to_samples(s, num_bytes);
2518 unsigned short *array = data;
2521 __le16 buf, *barray = data;
2524 for (i = 0; i < nsamples; i++) {
2525 unsigned int range = CR_RANGE(cmd->chanlist[chan_index]);
2526 unsigned short val = array[i];
2529 * Munge data from unsigned to two's complement for
2532 if (comedi_range_is_bipolar(s, range))
2533 val = comedi_offset_munge(s, val);
2535 buf = cpu_to_le16(val);
2541 chan_index %= cmd->chanlist_len;
2545 static int ni_m_series_ao_config_chanlist(struct comedi_device *dev,
2546 struct comedi_subdevice *s,
2547 unsigned int chanspec[],
2548 unsigned int n_chans, int timed)
2550 struct ni_private *devpriv = dev->private;
2558 for (i = 0; i < s->n_chan; ++i) {
2559 devpriv->ao_conf[i] &= ~NI_M_AO_CFG_BANK_UPDATE_TIMED;
2560 ni_writeb(dev, devpriv->ao_conf[i],
2561 NI_M_AO_CFG_BANK_REG(i));
2562 ni_writeb(dev, 0xf, NI_M_AO_WAVEFORM_ORDER_REG(i));
2565 for (i = 0; i < n_chans; i++) {
2566 const struct comedi_krange *krange;
2568 chan = CR_CHAN(chanspec[i]);
2569 range = CR_RANGE(chanspec[i]);
2570 krange = s->range_table->range + range;
2573 switch (krange->max - krange->min) {
2575 conf |= NI_M_AO_CFG_BANK_REF_INT_10V;
2576 ni_writeb(dev, 0, NI_M_AO_REF_ATTENUATION_REG(chan));
2579 conf |= NI_M_AO_CFG_BANK_REF_INT_5V;
2580 ni_writeb(dev, 0, NI_M_AO_REF_ATTENUATION_REG(chan));
2583 conf |= NI_M_AO_CFG_BANK_REF_INT_10V;
2584 ni_writeb(dev, NI_M_AO_REF_ATTENUATION_X5,
2585 NI_M_AO_REF_ATTENUATION_REG(chan));
2588 conf |= NI_M_AO_CFG_BANK_REF_INT_5V;
2589 ni_writeb(dev, NI_M_AO_REF_ATTENUATION_X5,
2590 NI_M_AO_REF_ATTENUATION_REG(chan));
2593 dev_err(dev->class_dev,
2594 "bug! unhandled ao reference voltage\n");
2597 switch (krange->max + krange->min) {
2599 conf |= NI_M_AO_CFG_BANK_OFFSET_0V;
2602 conf |= NI_M_AO_CFG_BANK_OFFSET_5V;
2605 dev_err(dev->class_dev,
2606 "bug! unhandled ao offset voltage\n");
2610 conf |= NI_M_AO_CFG_BANK_UPDATE_TIMED;
2611 ni_writeb(dev, conf, NI_M_AO_CFG_BANK_REG(chan));
2612 devpriv->ao_conf[chan] = conf;
2613 ni_writeb(dev, i, NI_M_AO_WAVEFORM_ORDER_REG(chan));
2618 static int ni_old_ao_config_chanlist(struct comedi_device *dev,
2619 struct comedi_subdevice *s,
2620 unsigned int chanspec[],
2621 unsigned int n_chans)
2623 struct ni_private *devpriv = dev->private;
2630 for (i = 0; i < n_chans; i++) {
2631 chan = CR_CHAN(chanspec[i]);
2632 range = CR_RANGE(chanspec[i]);
2633 conf = NI_E_AO_DACSEL(chan);
2635 if (comedi_range_is_bipolar(s, range)) {
2636 conf |= NI_E_AO_CFG_BIP;
2637 invert = (s->maxdata + 1) >> 1;
2641 if (comedi_range_is_external(s, range))
2642 conf |= NI_E_AO_EXT_REF;
2644 /* not all boards can deglitch, but this shouldn't hurt */
2645 if (chanspec[i] & CR_DEGLITCH)
2646 conf |= NI_E_AO_DEGLITCH;
2648 /* analog reference */
2649 /* AREF_OTHER connects AO ground to AI ground, i think */
2650 if (CR_AREF(chanspec[i]) == AREF_OTHER)
2651 conf |= NI_E_AO_GROUND_REF;
2653 ni_writew(dev, conf, NI_E_AO_CFG_REG);
2654 devpriv->ao_conf[chan] = conf;
2659 static int ni_ao_config_chanlist(struct comedi_device *dev,
2660 struct comedi_subdevice *s,
2661 unsigned int chanspec[], unsigned int n_chans,
2664 struct ni_private *devpriv = dev->private;
2666 if (devpriv->is_m_series)
2667 return ni_m_series_ao_config_chanlist(dev, s, chanspec, n_chans,
2670 return ni_old_ao_config_chanlist(dev, s, chanspec, n_chans);
2673 static int ni_ao_insn_write(struct comedi_device *dev,
2674 struct comedi_subdevice *s,
2675 struct comedi_insn *insn,
2678 struct ni_private *devpriv = dev->private;
2679 unsigned int chan = CR_CHAN(insn->chanspec);
2680 unsigned int range = CR_RANGE(insn->chanspec);
2684 if (devpriv->is_6xxx) {
2685 ni_ao_win_outw(dev, 1 << chan, NI671X_AO_IMMEDIATE_REG);
2687 reg = NI671X_DAC_DIRECT_DATA_REG(chan);
2688 } else if (devpriv->is_m_series) {
2689 reg = NI_M_DAC_DIRECT_DATA_REG(chan);
2691 reg = NI_E_DAC_DIRECT_DATA_REG(chan);
2694 ni_ao_config_chanlist(dev, s, &insn->chanspec, 1, 0);
2696 for (i = 0; i < insn->n; i++) {
2697 unsigned int val = data[i];
2699 s->readback[chan] = val;
2701 if (devpriv->is_6xxx) {
2703 * 6xxx boards have bipolar outputs, munge the
2704 * unsigned comedi values to 2's complement
2706 val = comedi_offset_munge(s, val);
2708 ni_ao_win_outw(dev, val, reg);
2709 } else if (devpriv->is_m_series) {
2711 * M-series boards use offset binary values for
2712 * bipolar and uinpolar outputs
2714 ni_writew(dev, val, reg);
2717 * Non-M series boards need two's complement values
2718 * for bipolar ranges.
2720 if (comedi_range_is_bipolar(s, range))
2721 val = comedi_offset_munge(s, val);
2723 ni_writew(dev, val, reg);
2731 * Arms the AO device in preparation for a trigger event.
2732 * This function also allocates and prepares a DMA channel (or FIFO if DMA is
2733 * not used). As a part of this preparation, this function preloads the DAC
2734 * registers with the first values of the output stream. This ensures that the
2735 * first clock cycle after the trigger can be used for output.
2737 * Note that this function _must_ happen after a user has written data to the
2738 * output buffers via either mmap or write(fileno,...).
2740 static int ni_ao_arm(struct comedi_device *dev,
2741 struct comedi_subdevice *s)
2743 struct ni_private *devpriv = dev->private;
2745 int interrupt_b_bits;
2747 static const int timeout = 1000;
2750 * Prevent ao from doing things like trying to allocate the ao dma
2751 * channel multiple times.
2753 if (!devpriv->ao_needs_arming) {
2754 dev_dbg(dev->class_dev, "%s: device does not need arming!\n",
2759 devpriv->ao_needs_arming = 0;
2761 ni_set_bits(dev, NISTC_INTB_ENA_REG,
2762 NISTC_INTB_ENA_AO_FIFO | NISTC_INTB_ENA_AO_ERR, 0);
2763 interrupt_b_bits = NISTC_INTB_ENA_AO_ERR;
2765 ni_stc_writew(dev, 1, NISTC_DAC_FIFO_CLR_REG);
2766 if (devpriv->is_6xxx)
2767 ni_ao_win_outl(dev, 0x6, NI611X_AO_FIFO_OFFSET_LOAD_REG);
2768 ret = ni_ao_setup_MITE_dma(dev);
2771 ret = ni_ao_wait_for_dma_load(dev);
2775 ret = ni_ao_prep_fifo(dev, s);
2779 interrupt_b_bits |= NISTC_INTB_ENA_AO_FIFO;
2782 ni_stc_writew(dev, devpriv->ao_mode3 | NISTC_AO_MODE3_NOT_AN_UPDATE,
2783 NISTC_AO_MODE3_REG);
2784 ni_stc_writew(dev, devpriv->ao_mode3, NISTC_AO_MODE3_REG);
2785 /* wait for DACs to be loaded */
2786 for (i = 0; i < timeout; i++) {
2788 if ((ni_stc_readw(dev, NISTC_STATUS2_REG) &
2789 NISTC_STATUS2_AO_TMRDACWRS_IN_PROGRESS) == 0)
2793 dev_err(dev->class_dev,
2794 "timed out waiting for AO_TMRDACWRs_In_Progress_St to clear\n");
2798 * stc manual says we are need to clear error interrupt after
2799 * AO_TMRDACWRs_In_Progress_St clears
2801 ni_stc_writew(dev, NISTC_INTB_ACK_AO_ERR, NISTC_INTB_ACK_REG);
2803 ni_set_bits(dev, NISTC_INTB_ENA_REG, interrupt_b_bits, 1);
2805 ni_stc_writew(dev, NISTC_AO_CMD1_UI_ARM |
2806 NISTC_AO_CMD1_UC_ARM |
2807 NISTC_AO_CMD1_BC_ARM |
2814 static int ni_ao_insn_config(struct comedi_device *dev,
2815 struct comedi_subdevice *s,
2816 struct comedi_insn *insn, unsigned int *data)
2818 const struct ni_board_struct *board = dev->board_ptr;
2819 struct ni_private *devpriv = dev->private;
2820 unsigned int nbytes;
2823 case INSN_CONFIG_GET_HARDWARE_BUFFER_SIZE:
2826 nbytes = comedi_samples_to_bytes(s,
2827 board->ao_fifo_depth);
2828 data[2] = 1 + nbytes;
2830 data[2] += devpriv->mite->fifo_size;
2839 case INSN_CONFIG_ARM:
2840 return ni_ao_arm(dev, s);
2848 static int ni_ao_inttrig(struct comedi_device *dev,
2849 struct comedi_subdevice *s,
2850 unsigned int trig_num)
2852 struct ni_private *devpriv = dev->private;
2853 struct comedi_cmd *cmd = &s->async->cmd;
2857 * Require trig_num == cmd->start_arg when cmd->start_src == TRIG_INT.
2858 * For backwards compatibility, also allow trig_num == 0 when
2859 * cmd->start_src != TRIG_INT (i.e. when cmd->start_src == TRIG_EXT);
2860 * in that case, the internal trigger is being used as a pre-trigger
2861 * before the external trigger.
2863 if (!(trig_num == cmd->start_arg ||
2864 (trig_num == 0 && cmd->start_src != TRIG_INT)))
2868 * Null trig at beginning prevent ao start trigger from executing more
2869 * than once per command.
2871 s->async->inttrig = NULL;
2873 if (devpriv->ao_needs_arming) {
2874 /* only arm this device if it still needs arming */
2875 ret = ni_ao_arm(dev, s);
2880 ni_stc_writew(dev, NISTC_AO_CMD2_START1_PULSE | devpriv->ao_cmd2,
2888 * Organized similar to NI-STC and MHDDK examples.
2889 * ni_ao_cmd is broken out into configuration sub-routines for clarity.
2892 static void ni_ao_cmd_personalize(struct comedi_device *dev,
2893 const struct comedi_cmd *cmd)
2895 const struct ni_board_struct *board = dev->board_ptr;
2898 ni_stc_writew(dev, NISTC_RESET_AO_CFG_START, NISTC_RESET_REG);
2901 /* fast CPU interface--only eseries */
2902 /* ((slow CPU interface) ? 0 : AO_Fast_CPU) | */
2903 NISTC_AO_PERSONAL_BC_SRC_SEL |
2904 0 /* (use_original_pulse ? 0 : NISTC_AO_PERSONAL_UPDATE_TIMEBASE) */ |
2906 * FIXME: start setting following bit when appropriate. Need to
2907 * determine whether board is E4 or E1.
2909 * if board is E4 or E1
2910 * Set bit "NISTC_AO_PERSONAL_UPDATE_PW" to 0
2914 NISTC_AO_PERSONAL_UPDATE_PW |
2915 /* FIXME: when should we set following bit to zero? */
2916 NISTC_AO_PERSONAL_TMRDACWR_PW |
2917 (board->ao_fifo_depth ?
2918 NISTC_AO_PERSONAL_FIFO_ENA : NISTC_AO_PERSONAL_DMA_PIO_CTRL)
2923 * add something like ".has_individual_dacs = 0" to ni_board_struct
2924 * since, as F Hess pointed out, not all in m series have singles. not
2925 * sure if e-series all have duals...
2929 * F Hess: windows driver does not set NISTC_AO_PERSONAL_NUM_DAC bit for
2930 * 6281, verified with bus analyzer.
2932 if (devpriv->is_m_series)
2933 bits |= NISTC_AO_PERSONAL_NUM_DAC;
2935 ni_stc_writew(dev, bits, NISTC_AO_PERSONAL_REG);
2937 ni_stc_writew(dev, NISTC_RESET_AO_CFG_END, NISTC_RESET_REG);
2940 static void ni_ao_cmd_set_trigger(struct comedi_device *dev,
2941 const struct comedi_cmd *cmd)
2943 struct ni_private *devpriv = dev->private;
2944 unsigned int trigsel;
2946 ni_stc_writew(dev, NISTC_RESET_AO_CFG_START, NISTC_RESET_REG);
2949 if (cmd->stop_src == TRIG_NONE) {
2950 devpriv->ao_mode1 |= NISTC_AO_MODE1_CONTINUOUS;
2951 devpriv->ao_mode1 &= ~NISTC_AO_MODE1_TRIGGER_ONCE;
2953 devpriv->ao_mode1 &= ~NISTC_AO_MODE1_CONTINUOUS;
2954 devpriv->ao_mode1 |= NISTC_AO_MODE1_TRIGGER_ONCE;
2956 ni_stc_writew(dev, devpriv->ao_mode1, NISTC_AO_MODE1_REG);
2958 if (cmd->start_src == TRIG_INT) {
2959 trigsel = NISTC_AO_TRIG_START1_EDGE |
2960 NISTC_AO_TRIG_START1_SYNC;
2961 } else { /* TRIG_EXT */
2962 trigsel = NISTC_AO_TRIG_START1_SEL(CR_CHAN(cmd->start_arg) + 1);
2963 /* 0=active high, 1=active low. see daq-stc 3-24 (p186) */
2964 if (cmd->start_arg & CR_INVERT)
2965 trigsel |= NISTC_AO_TRIG_START1_POLARITY;
2966 /* 0=edge detection disabled, 1=enabled */
2967 if (cmd->start_arg & CR_EDGE)
2968 trigsel |= NISTC_AO_TRIG_START1_EDGE;
2970 ni_stc_writew(dev, trigsel, NISTC_AO_TRIG_SEL_REG);
2972 /* AO_Delayed_START1 = 0, we do not support delayed start...yet */
2975 /* select DA_START1 as PFI6/AO_START1 when configured as an output */
2976 devpriv->ao_mode3 &= ~NISTC_AO_MODE3_TRIG_LEN;
2977 ni_stc_writew(dev, devpriv->ao_mode3, NISTC_AO_MODE3_REG);
2979 ni_stc_writew(dev, NISTC_RESET_AO_CFG_END, NISTC_RESET_REG);
2982 static void ni_ao_cmd_set_counters(struct comedi_device *dev,
2983 const struct comedi_cmd *cmd)
2985 struct ni_private *devpriv = dev->private;
2986 /* Not supporting 'waveform staging' or 'local buffer with pauses' */
2988 ni_stc_writew(dev, NISTC_RESET_AO_CFG_START, NISTC_RESET_REG);
2990 * This relies on ao_mode1/(Trigger_Once | Continuous) being set in
2991 * set_trigger above. It is unclear whether we really need to re-write
2992 * this register with these values. The mhddk examples for e-series
2993 * show writing this in both places, but the examples for m-series show
2994 * a single write in the set_counters function (here).
2996 ni_stc_writew(dev, devpriv->ao_mode1, NISTC_AO_MODE1_REG);
2998 /* sync (upload number of buffer iterations -1) */
2999 /* indicate that we want to use BC_Load_A_Register as the source */
3000 devpriv->ao_mode2 &= ~NISTC_AO_MODE2_BC_INIT_LOAD_SRC;
3001 ni_stc_writew(dev, devpriv->ao_mode2, NISTC_AO_MODE2_REG);
3004 * if the BC_TC interrupt is still issued in spite of UC, BC, UI
3005 * ignoring BC_TC, then we will need to find a way to ignore that
3006 * interrupt in continuous mode.
3008 ni_stc_writel(dev, 0, NISTC_AO_BC_LOADA_REG); /* iter once */
3010 /* sync (issue command to load number of buffer iterations -1) */
3011 ni_stc_writew(dev, NISTC_AO_CMD1_BC_LOAD, NISTC_AO_CMD1_REG);
3013 /* sync (upload number of updates in buffer) */
3014 /* indicate that we want to use UC_Load_A_Register as the source */
3015 devpriv->ao_mode2 &= ~NISTC_AO_MODE2_UC_INIT_LOAD_SRC;
3016 ni_stc_writew(dev, devpriv->ao_mode2, NISTC_AO_MODE2_REG);
3019 * if a user specifies '0', this automatically assumes the entire 24bit
3020 * address space is available for the (multiple iterations of single
3021 * buffer) MISB. Otherwise, stop_arg specifies the MISB length that
3022 * will be used, regardless of whether we are in continuous mode or not.
3023 * In continuous mode, the output will just iterate indefinitely over
3027 unsigned int stop_arg = cmd->stop_arg > 0 ?
3028 (cmd->stop_arg & 0xffffff) : 0xffffff;
3030 if (devpriv->is_m_series) {
3032 * this is how the NI example code does it for m-series
3033 * boards, verified correct with 6259
3035 ni_stc_writel(dev, stop_arg - 1, NISTC_AO_UC_LOADA_REG);
3037 /* sync (issue cmd to load number of updates in MISB) */
3038 ni_stc_writew(dev, NISTC_AO_CMD1_UC_LOAD,
3041 ni_stc_writel(dev, stop_arg, NISTC_AO_UC_LOADA_REG);
3043 /* sync (issue cmd to load number of updates in MISB) */
3044 ni_stc_writew(dev, NISTC_AO_CMD1_UC_LOAD,
3048 * sync (upload number of updates-1 in MISB)
3051 ni_stc_writel(dev, stop_arg - 1, NISTC_AO_UC_LOADA_REG);
3055 ni_stc_writew(dev, NISTC_RESET_AO_CFG_END, NISTC_RESET_REG);
3058 static void ni_ao_cmd_set_update(struct comedi_device *dev,
3059 const struct comedi_cmd *cmd)
3061 struct ni_private *devpriv = dev->private;
3063 ni_stc_writew(dev, NISTC_RESET_AO_CFG_START, NISTC_RESET_REG);
3066 * zero out these bit fields to be set below. Does an ao-reset do this
3069 devpriv->ao_mode1 &= ~(
3070 NISTC_AO_MODE1_UI_SRC_MASK |
3071 NISTC_AO_MODE1_UI_SRC_POLARITY |
3072 NISTC_AO_MODE1_UPDATE_SRC_MASK |
3073 NISTC_AO_MODE1_UPDATE_SRC_POLARITY
3076 if (cmd->scan_begin_src == TRIG_TIMER) {
3077 unsigned int trigvar;
3079 devpriv->ao_cmd2 &= ~NISTC_AO_CMD2_BC_GATE_ENA;
3082 * NOTE: there are several other ways of configuring internal
3083 * updates, but we'll only support one for now: using
3084 * AO_IN_TIMEBASE, w/o waveform staging, w/o a delay between
3085 * START1 and first update, and also w/o local buffer mode w/
3090 * This is already done above:
3091 * devpriv->ao_mode1 &= ~(
3092 * // set UPDATE_Source to UI_TC:
3093 * NISTC_AO_MODE1_UPDATE_SRC_MASK |
3094 * // set UPDATE_Source_Polarity to rising (required?)
3095 * NISTC_AO_MODE1_UPDATE_SRC_POLARITY |
3096 * // set UI_Source to AO_IN_TIMEBASE1:
3097 * NISTC_AO_MODE1_UI_SRC_MASK |
3098 * // set UI_Source_Polarity to rising (required?)
3099 * NISTC_AO_MODE1_UI_SRC_POLARITY
3104 * TODO: use ao_ui_clock_source to allow all possible signals
3105 * to be routed to UI_Source_Select. See tSTC.h for
3106 * eseries/ni67xx and tMSeries.h for mseries.
3109 trigvar = ni_ns_to_timer(dev, cmd->scan_begin_arg,
3110 CMDF_ROUND_NEAREST);
3113 * Wait N TB3 ticks after the start trigger before
3114 * clocking (N must be >=2).
3116 /* following line: 2-1 per STC */
3117 ni_stc_writel(dev, 1, NISTC_AO_UI_LOADA_REG);
3118 ni_stc_writew(dev, NISTC_AO_CMD1_UI_LOAD, NISTC_AO_CMD1_REG);
3119 /* following line: N-1 per STC */
3120 ni_stc_writel(dev, trigvar - 1, NISTC_AO_UI_LOADA_REG);
3121 } else { /* TRIG_EXT */
3122 /* FIXME: assert scan_begin_arg != 0, ret failure otherwise */
3123 devpriv->ao_cmd2 |= NISTC_AO_CMD2_BC_GATE_ENA;
3124 devpriv->ao_mode1 |= NISTC_AO_MODE1_UPDATE_SRC(
3125 CR_CHAN(cmd->scan_begin_arg));
3126 if (cmd->scan_begin_arg & CR_INVERT)
3127 devpriv->ao_mode1 |= NISTC_AO_MODE1_UPDATE_SRC_POLARITY;
3130 ni_stc_writew(dev, devpriv->ao_cmd2, NISTC_AO_CMD2_REG);
3131 ni_stc_writew(dev, devpriv->ao_mode1, NISTC_AO_MODE1_REG);
3132 devpriv->ao_mode2 &= ~(NISTC_AO_MODE2_UI_RELOAD_MODE(3) |
3133 NISTC_AO_MODE2_UI_INIT_LOAD_SRC);
3134 ni_stc_writew(dev, devpriv->ao_mode2, NISTC_AO_MODE2_REG);
3136 /* Configure DAQ-STC for Timed update mode */
3137 devpriv->ao_cmd1 |= NISTC_AO_CMD1_DAC1_UPDATE_MODE |
3138 NISTC_AO_CMD1_DAC0_UPDATE_MODE;
3139 /* We are not using UPDATE2-->don't have to set DACx_Source_Select */
3140 ni_stc_writew(dev, devpriv->ao_cmd1, NISTC_AO_CMD1_REG);
3142 ni_stc_writew(dev, NISTC_RESET_AO_CFG_END, NISTC_RESET_REG);
3145 static void ni_ao_cmd_set_channels(struct comedi_device *dev,
3146 struct comedi_subdevice *s)
3148 struct ni_private *devpriv = dev->private;
3149 const struct comedi_cmd *cmd = &s->async->cmd;
3150 unsigned int bits = 0;
3152 ni_stc_writew(dev, NISTC_RESET_AO_CFG_START, NISTC_RESET_REG);
3154 if (devpriv->is_6xxx) {
3158 for (i = 0; i < cmd->chanlist_len; ++i) {
3159 int chan = CR_CHAN(cmd->chanlist[i]);
3162 ni_ao_win_outw(dev, chan, NI611X_AO_WAVEFORM_GEN_REG);
3164 ni_ao_win_outw(dev, bits, NI611X_AO_TIMED_REG);
3167 ni_ao_config_chanlist(dev, s, cmd->chanlist, cmd->chanlist_len, 1);
3169 if (cmd->scan_end_arg > 1) {
3170 devpriv->ao_mode1 |= NISTC_AO_MODE1_MULTI_CHAN;
3171 bits = NISTC_AO_OUT_CTRL_CHANS(cmd->scan_end_arg - 1)
3172 | NISTC_AO_OUT_CTRL_UPDATE_SEL_HIGHZ;
3175 devpriv->ao_mode1 &= ~NISTC_AO_MODE1_MULTI_CHAN;
3176 bits = NISTC_AO_OUT_CTRL_UPDATE_SEL_HIGHZ;
3177 if (devpriv->is_m_series | devpriv->is_6xxx)
3178 bits |= NISTC_AO_OUT_CTRL_CHANS(0);
3180 bits |= NISTC_AO_OUT_CTRL_CHANS(
3181 CR_CHAN(cmd->chanlist[0]));
3184 ni_stc_writew(dev, devpriv->ao_mode1, NISTC_AO_MODE1_REG);
3185 ni_stc_writew(dev, bits, NISTC_AO_OUT_CTRL_REG);
3187 ni_stc_writew(dev, NISTC_RESET_AO_CFG_END, NISTC_RESET_REG);
3190 static void ni_ao_cmd_set_stop_conditions(struct comedi_device *dev,
3191 const struct comedi_cmd *cmd)
3193 struct ni_private *devpriv = dev->private;
3195 ni_stc_writew(dev, NISTC_RESET_AO_CFG_START, NISTC_RESET_REG);
3197 devpriv->ao_mode3 |= NISTC_AO_MODE3_STOP_ON_OVERRUN_ERR;
3198 ni_stc_writew(dev, devpriv->ao_mode3, NISTC_AO_MODE3_REG);
3201 * Since we are not supporting waveform staging, we ignore these errors:
3202 * NISTC_AO_MODE3_STOP_ON_BC_TC_ERR,
3203 * NISTC_AO_MODE3_STOP_ON_BC_TC_TRIG_ERR
3206 ni_stc_writew(dev, NISTC_RESET_AO_CFG_END, NISTC_RESET_REG);
3209 static void ni_ao_cmd_set_fifo_mode(struct comedi_device *dev)
3211 struct ni_private *devpriv = dev->private;
3213 ni_stc_writew(dev, NISTC_RESET_AO_CFG_START, NISTC_RESET_REG);
3215 devpriv->ao_mode2 &= ~NISTC_AO_MODE2_FIFO_MODE_MASK;
3217 devpriv->ao_mode2 |= NISTC_AO_MODE2_FIFO_MODE_HF_F;
3219 devpriv->ao_mode2 |= NISTC_AO_MODE2_FIFO_MODE_HF;
3221 /* NOTE: this is where use_onboard_memory=True would be implemented */
3222 devpriv->ao_mode2 &= ~NISTC_AO_MODE2_FIFO_REXMIT_ENA;
3223 ni_stc_writew(dev, devpriv->ao_mode2, NISTC_AO_MODE2_REG);
3225 /* enable sending of ao fifo requests (dma request) */
3226 ni_stc_writew(dev, NISTC_AO_START_AOFREQ_ENA, NISTC_AO_START_SEL_REG);
3228 ni_stc_writew(dev, NISTC_RESET_AO_CFG_END, NISTC_RESET_REG);
3230 /* we are not supporting boards with virtual fifos */
3233 static void ni_ao_cmd_set_interrupts(struct comedi_device *dev,
3234 struct comedi_subdevice *s)
3236 if (s->async->cmd.stop_src == TRIG_COUNT)
3237 ni_set_bits(dev, NISTC_INTB_ENA_REG,
3238 NISTC_INTB_ENA_AO_BC_TC, 1);
3240 s->async->inttrig = ni_ao_inttrig;
3243 static int ni_ao_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
3245 struct ni_private *devpriv = dev->private;
3246 const struct comedi_cmd *cmd = &s->async->cmd;
3248 if (dev->irq == 0) {
3249 dev_err(dev->class_dev, "cannot run command without an irq");
3253 /* ni_ao_reset should have already been done */
3254 ni_ao_cmd_personalize(dev, cmd);
3255 /* clearing fifo and preload happens elsewhere */
3257 ni_ao_cmd_set_trigger(dev, cmd);
3258 ni_ao_cmd_set_counters(dev, cmd);
3259 ni_ao_cmd_set_update(dev, cmd);
3260 ni_ao_cmd_set_channels(dev, s);
3261 ni_ao_cmd_set_stop_conditions(dev, cmd);
3262 ni_ao_cmd_set_fifo_mode(dev);
3263 ni_cmd_set_mite_transfer(devpriv->ao_mite_ring, s, cmd, 0x00ffffff);
3264 ni_ao_cmd_set_interrupts(dev, s);
3267 * arm(ing) must happen later so that DMA can be setup and DACs
3268 * preloaded with the actual output buffer before starting.
3270 * start(ing) must happen _after_ arming is completed. Starting can be
3271 * done either via ni_ao_inttrig, or via an external trigger.
3273 * **Currently, ni_ao_inttrig will automatically attempt a call to
3274 * ni_ao_arm if the device still needs arming at that point. This
3275 * allows backwards compatibility.
3277 devpriv->ao_needs_arming = 1;
3283 static int ni_ao_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s,
3284 struct comedi_cmd *cmd)
3286 const struct ni_board_struct *board = dev->board_ptr;
3287 struct ni_private *devpriv = dev->private;
3291 /* Step 1 : check if triggers are trivially valid */
3293 err |= comedi_check_trigger_src(&cmd->start_src, TRIG_INT | TRIG_EXT);
3294 err |= comedi_check_trigger_src(&cmd->scan_begin_src,
3295 TRIG_TIMER | TRIG_EXT);
3296 err |= comedi_check_trigger_src(&cmd->convert_src, TRIG_NOW);
3297 err |= comedi_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
3298 err |= comedi_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE);
3303 /* Step 2a : make sure trigger sources are unique */
3305 err |= comedi_check_trigger_is_unique(cmd->start_src);
3306 err |= comedi_check_trigger_is_unique(cmd->scan_begin_src);
3307 err |= comedi_check_trigger_is_unique(cmd->stop_src);
3309 /* Step 2b : and mutually compatible */
3314 /* Step 3: check if arguments are trivially valid */
3316 switch (cmd->start_src) {
3318 err |= comedi_check_trigger_arg_is(&cmd->start_arg, 0);
3321 tmp = CR_CHAN(cmd->start_arg);
3325 tmp |= (cmd->start_arg & (CR_INVERT | CR_EDGE));
3326 err |= comedi_check_trigger_arg_is(&cmd->start_arg, tmp);
3330 if (cmd->scan_begin_src == TRIG_TIMER) {
3331 err |= comedi_check_trigger_arg_min(&cmd->scan_begin_arg,
3333 err |= comedi_check_trigger_arg_max(&cmd->scan_begin_arg,
3338 err |= comedi_check_trigger_arg_is(&cmd->convert_arg, 0);
3339 err |= comedi_check_trigger_arg_is(&cmd->scan_end_arg,
3341 err |= comedi_check_trigger_arg_max(&cmd->stop_arg, 0x00ffffff);
3346 /* step 4: fix up any arguments */
3347 if (cmd->scan_begin_src == TRIG_TIMER) {
3348 tmp = cmd->scan_begin_arg;
3349 cmd->scan_begin_arg =
3350 ni_timer_to_ns(dev, ni_ns_to_timer(dev,
3351 cmd->scan_begin_arg,
3353 if (tmp != cmd->scan_begin_arg)
3362 static int ni_ao_reset(struct comedi_device *dev, struct comedi_subdevice *s)
3364 /* See 3.6.1.2 "Resetting", of DAQ-STC Technical Reference Manual */
3367 * In the following, the "--sync" comments are meant to denote
3368 * asynchronous boundaries for setting the registers as described in the
3369 * DAQ-STC mostly in the order also described in the DAQ-STC.
3372 struct ni_private *devpriv = dev->private;
3374 ni_release_ao_mite_channel(dev);
3376 /* --sync (reset AO) */
3377 if (devpriv->is_m_series)
3378 /* following example in mhddk for m-series */
3379 ni_stc_writew(dev, NISTC_RESET_AO, NISTC_RESET_REG);
3381 /*--sync (start config) */
3382 ni_stc_writew(dev, NISTC_RESET_AO_CFG_START, NISTC_RESET_REG);
3384 /*--sync (Disarm) */
3385 ni_stc_writew(dev, NISTC_AO_CMD1_DISARM, NISTC_AO_CMD1_REG);
3389 * (clear bunch of registers--mseries mhddk examples do not include
3392 devpriv->ao_cmd1 = 0;
3393 devpriv->ao_cmd2 = 0;
3394 devpriv->ao_mode1 = 0;
3395 devpriv->ao_mode2 = 0;
3396 if (devpriv->is_m_series)
3397 devpriv->ao_mode3 = NISTC_AO_MODE3_LAST_GATE_DISABLE;
3399 devpriv->ao_mode3 = 0;
3401 ni_stc_writew(dev, 0, NISTC_AO_PERSONAL_REG);
3402 ni_stc_writew(dev, 0, NISTC_AO_CMD1_REG);
3403 ni_stc_writew(dev, 0, NISTC_AO_CMD2_REG);
3404 ni_stc_writew(dev, 0, NISTC_AO_MODE1_REG);
3405 ni_stc_writew(dev, 0, NISTC_AO_MODE2_REG);
3406 ni_stc_writew(dev, 0, NISTC_AO_OUT_CTRL_REG);
3407 ni_stc_writew(dev, devpriv->ao_mode3, NISTC_AO_MODE3_REG);
3408 ni_stc_writew(dev, 0, NISTC_AO_START_SEL_REG);
3409 ni_stc_writew(dev, 0, NISTC_AO_TRIG_SEL_REG);
3411 /*--sync (disable interrupts) */
3412 ni_set_bits(dev, NISTC_INTB_ENA_REG, ~0, 0);
3415 ni_stc_writew(dev, NISTC_AO_PERSONAL_BC_SRC_SEL, NISTC_AO_PERSONAL_REG);
3416 ni_stc_writew(dev, NISTC_INTB_ACK_AO_ALL, NISTC_INTB_ACK_REG);
3418 /*--not in DAQ-STC. which doc? */
3419 if (devpriv->is_6xxx) {
3420 ni_ao_win_outw(dev, (1u << s->n_chan) - 1u,
3421 NI671X_AO_IMMEDIATE_REG);
3422 ni_ao_win_outw(dev, NI611X_AO_MISC_CLEAR_WG,
3423 NI611X_AO_MISC_REG);
3425 ni_stc_writew(dev, NISTC_RESET_AO_CFG_END, NISTC_RESET_REG);
3433 static int ni_dio_insn_config(struct comedi_device *dev,
3434 struct comedi_subdevice *s,
3435 struct comedi_insn *insn,
3438 struct ni_private *devpriv = dev->private;
3441 ret = comedi_dio_insn_config(dev, s, insn, data, 0);
3445 devpriv->dio_control &= ~NISTC_DIO_CTRL_DIR_MASK;
3446 devpriv->dio_control |= NISTC_DIO_CTRL_DIR(s->io_bits);
3447 ni_stc_writew(dev, devpriv->dio_control, NISTC_DIO_CTRL_REG);
3452 static int ni_dio_insn_bits(struct comedi_device *dev,
3453 struct comedi_subdevice *s,
3454 struct comedi_insn *insn,
3457 struct ni_private *devpriv = dev->private;
3459 /* Make sure we're not using the serial part of the dio */
3460 if ((data[0] & (NISTC_DIO_SDIN | NISTC_DIO_SDOUT)) &&
3461 devpriv->serial_interval_ns)
3464 if (comedi_dio_update_state(s, data)) {
3465 devpriv->dio_output &= ~NISTC_DIO_OUT_PARALLEL_MASK;
3466 devpriv->dio_output |= NISTC_DIO_OUT_PARALLEL(s->state);
3467 ni_stc_writew(dev, devpriv->dio_output, NISTC_DIO_OUT_REG);
3470 data[1] = ni_stc_readw(dev, NISTC_DIO_IN_REG);
3476 static int ni_m_series_dio_insn_config(struct comedi_device *dev,
3477 struct comedi_subdevice *s,
3478 struct comedi_insn *insn,
3483 ret = comedi_dio_insn_config(dev, s, insn, data, 0);
3487 ni_writel(dev, s->io_bits, NI_M_DIO_DIR_REG);
3492 static int ni_m_series_dio_insn_bits(struct comedi_device *dev,
3493 struct comedi_subdevice *s,
3494 struct comedi_insn *insn,
3497 if (comedi_dio_update_state(s, data))
3498 ni_writel(dev, s->state, NI_M_DIO_REG);
3500 data[1] = ni_readl(dev, NI_M_DIO_REG);
3505 static int ni_cdio_check_chanlist(struct comedi_device *dev,
3506 struct comedi_subdevice *s,
3507 struct comedi_cmd *cmd)
3511 for (i = 0; i < cmd->chanlist_len; ++i) {
3512 unsigned int chan = CR_CHAN(cmd->chanlist[i]);
3521 static int ni_cdio_cmdtest(struct comedi_device *dev,
3522 struct comedi_subdevice *s, struct comedi_cmd *cmd)
3527 /* Step 1 : check if triggers are trivially valid */
3529 err |= comedi_check_trigger_src(&cmd->start_src, TRIG_INT);
3530 err |= comedi_check_trigger_src(&cmd->scan_begin_src, TRIG_EXT);
3531 err |= comedi_check_trigger_src(&cmd->convert_src, TRIG_NOW);
3532 err |= comedi_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
3533 err |= comedi_check_trigger_src(&cmd->stop_src, TRIG_NONE);
3538 /* Step 2a : make sure trigger sources are unique */
3539 /* Step 2b : and mutually compatible */
3541 /* Step 3: check if arguments are trivially valid */
3543 err |= comedi_check_trigger_arg_is(&cmd->start_arg, 0);
3545 tmp = cmd->scan_begin_arg;
3546 tmp &= CR_PACK_FLAGS(NI_M_CDO_MODE_SAMPLE_SRC_MASK, 0, 0, CR_INVERT);
3547 if (tmp != cmd->scan_begin_arg)
3550 err |= comedi_check_trigger_arg_is(&cmd->convert_arg, 0);
3551 err |= comedi_check_trigger_arg_is(&cmd->scan_end_arg,
3553 err |= comedi_check_trigger_arg_max(&cmd->stop_arg,
3554 s->async->prealloc_bufsz /
3555 comedi_bytes_per_scan(s));
3560 /* Step 4: fix up any arguments */
3562 /* Step 5: check channel list if it exists */
3564 if (cmd->chanlist && cmd->chanlist_len > 0)
3565 err |= ni_cdio_check_chanlist(dev, s, cmd);
3573 static int ni_cdo_inttrig(struct comedi_device *dev,
3574 struct comedi_subdevice *s,
3575 unsigned int trig_num)
3577 struct comedi_cmd *cmd = &s->async->cmd;
3578 const unsigned int timeout = 1000;
3581 struct ni_private *devpriv = dev->private;
3582 unsigned long flags;
3584 if (trig_num != cmd->start_arg)
3587 s->async->inttrig = NULL;
3589 /* read alloc the entire buffer */
3590 comedi_buf_read_alloc(s, s->async->prealloc_bufsz);
3592 spin_lock_irqsave(&devpriv->mite_channel_lock, flags);
3593 if (devpriv->cdo_mite_chan) {
3594 mite_prep_dma(devpriv->cdo_mite_chan, 32, 32);
3595 mite_dma_arm(devpriv->cdo_mite_chan);
3597 dev_err(dev->class_dev, "BUG: no cdo mite channel?\n");
3600 spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags);
3605 * XXX not sure what interrupt C group does
3606 * wait for dma to fill output fifo
3607 * ni_writeb(dev, NI_M_INTC_ENA, NI_M_INTC_ENA_REG);
3609 for (i = 0; i < timeout; ++i) {
3610 if (ni_readl(dev, NI_M_CDIO_STATUS_REG) &
3611 NI_M_CDIO_STATUS_CDO_FIFO_FULL)
3613 usleep_range(10, 100);
3616 dev_err(dev->class_dev, "dma failed to fill cdo fifo!\n");
3620 ni_writel(dev, NI_M_CDO_CMD_ARM |
3621 NI_M_CDO_CMD_ERR_INT_ENA_SET |
3622 NI_M_CDO_CMD_F_E_INT_ENA_SET,
3627 static int ni_cdio_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
3629 struct ni_private *devpriv = dev->private;
3630 const struct comedi_cmd *cmd = &s->async->cmd;
3631 unsigned int cdo_mode_bits;
3634 ni_writel(dev, NI_M_CDO_CMD_RESET, NI_M_CDIO_CMD_REG);
3635 cdo_mode_bits = NI_M_CDO_MODE_FIFO_MODE |
3636 NI_M_CDO_MODE_HALT_ON_ERROR |
3637 NI_M_CDO_MODE_SAMPLE_SRC(CR_CHAN(cmd->scan_begin_arg));
3638 if (cmd->scan_begin_arg & CR_INVERT)
3639 cdo_mode_bits |= NI_M_CDO_MODE_POLARITY;
3640 ni_writel(dev, cdo_mode_bits, NI_M_CDO_MODE_REG);
3642 ni_writel(dev, s->state, NI_M_CDO_FIFO_DATA_REG);
3643 ni_writel(dev, NI_M_CDO_CMD_SW_UPDATE, NI_M_CDIO_CMD_REG);
3644 ni_writel(dev, s->io_bits, NI_M_CDO_MASK_ENA_REG);
3646 dev_err(dev->class_dev,
3647 "attempted to run digital output command with no lines configured as outputs\n");
3650 retval = ni_request_cdo_mite_channel(dev);
3654 ni_cmd_set_mite_transfer(devpriv->cdo_mite_ring, s, cmd,
3655 s->async->prealloc_bufsz /
3656 comedi_bytes_per_scan(s));
3658 s->async->inttrig = ni_cdo_inttrig;
3663 static int ni_cdio_cancel(struct comedi_device *dev, struct comedi_subdevice *s)
3665 ni_writel(dev, NI_M_CDO_CMD_DISARM |
3666 NI_M_CDO_CMD_ERR_INT_ENA_CLR |
3667 NI_M_CDO_CMD_F_E_INT_ENA_CLR |
3668 NI_M_CDO_CMD_F_REQ_INT_ENA_CLR,
3671 * XXX not sure what interrupt C group does
3672 * ni_writeb(dev, 0, NI_M_INTC_ENA_REG);
3674 ni_writel(dev, 0, NI_M_CDO_MASK_ENA_REG);
3675 ni_release_cdo_mite_channel(dev);
3679 static void handle_cdio_interrupt(struct comedi_device *dev)
3681 struct ni_private *devpriv = dev->private;
3682 unsigned int cdio_status;
3683 struct comedi_subdevice *s = &dev->subdevices[NI_DIO_SUBDEV];
3684 unsigned long flags;
3686 spin_lock_irqsave(&devpriv->mite_channel_lock, flags);
3687 if (devpriv->cdo_mite_chan)
3688 mite_ack_linkc(devpriv->cdo_mite_chan, s, true);
3689 spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags);
3691 cdio_status = ni_readl(dev, NI_M_CDIO_STATUS_REG);
3692 if (cdio_status & NI_M_CDIO_STATUS_CDO_ERROR) {
3693 /* XXX just guessing this is needed and does something useful */
3694 ni_writel(dev, NI_M_CDO_CMD_ERR_INT_CONFIRM,
3696 s->async->events |= COMEDI_CB_OVERFLOW;
3698 if (cdio_status & NI_M_CDIO_STATUS_CDO_FIFO_EMPTY) {
3699 ni_writel(dev, NI_M_CDO_CMD_F_E_INT_ENA_CLR,
3701 /* s->async->events |= COMEDI_CB_EOA; */
3703 comedi_handle_events(dev, s);
3707 static int ni_serial_hw_readwrite8(struct comedi_device *dev,
3708 struct comedi_subdevice *s,
3709 unsigned char data_out,
3710 unsigned char *data_in)
3712 struct ni_private *devpriv = dev->private;
3713 unsigned int status1;
3714 int err = 0, count = 20;
3716 devpriv->dio_output &= ~NISTC_DIO_OUT_SERIAL_MASK;
3717 devpriv->dio_output |= NISTC_DIO_OUT_SERIAL(data_out);
3718 ni_stc_writew(dev, devpriv->dio_output, NISTC_DIO_OUT_REG);
3720 status1 = ni_stc_readw(dev, NISTC_STATUS1_REG);
3721 if (status1 & NISTC_STATUS1_SERIO_IN_PROG) {
3726 devpriv->dio_control |= NISTC_DIO_CTRL_HW_SER_START;
3727 ni_stc_writew(dev, devpriv->dio_control, NISTC_DIO_CTRL_REG);
3728 devpriv->dio_control &= ~NISTC_DIO_CTRL_HW_SER_START;
3730 /* Wait until STC says we're done, but don't loop infinitely. */
3731 while ((status1 = ni_stc_readw(dev, NISTC_STATUS1_REG)) &
3732 NISTC_STATUS1_SERIO_IN_PROG) {
3733 /* Delay one bit per loop */
3734 udelay((devpriv->serial_interval_ns + 999) / 1000);
3736 dev_err(dev->class_dev,
3737 "SPI serial I/O didn't finish in time!\n");
3744 * Delay for last bit. This delay is absolutely necessary, because
3745 * NISTC_STATUS1_SERIO_IN_PROG goes high one bit too early.
3747 udelay((devpriv->serial_interval_ns + 999) / 1000);
3750 *data_in = ni_stc_readw(dev, NISTC_DIO_SERIAL_IN_REG);
3753 ni_stc_writew(dev, devpriv->dio_control, NISTC_DIO_CTRL_REG);
3758 static int ni_serial_sw_readwrite8(struct comedi_device *dev,
3759 struct comedi_subdevice *s,
3760 unsigned char data_out,
3761 unsigned char *data_in)
3763 struct ni_private *devpriv = dev->private;
3764 unsigned char mask, input = 0;
3766 /* Wait for one bit before transfer */
3767 udelay((devpriv->serial_interval_ns + 999) / 1000);
3769 for (mask = 0x80; mask; mask >>= 1) {
3771 * Output current bit; note that we cannot touch s->state
3772 * because it is a per-subdevice field, and serial is
3773 * a separate subdevice from DIO.
3775 devpriv->dio_output &= ~NISTC_DIO_SDOUT;
3776 if (data_out & mask)
3777 devpriv->dio_output |= NISTC_DIO_SDOUT;
3778 ni_stc_writew(dev, devpriv->dio_output, NISTC_DIO_OUT_REG);
3781 * Assert SDCLK (active low, inverted), wait for half of
3782 * the delay, deassert SDCLK, and wait for the other half.
3784 devpriv->dio_control |= NISTC_DIO_SDCLK;
3785 ni_stc_writew(dev, devpriv->dio_control, NISTC_DIO_CTRL_REG);
3787 udelay((devpriv->serial_interval_ns + 999) / 2000);
3789 devpriv->dio_control &= ~NISTC_DIO_SDCLK;
3790 ni_stc_writew(dev, devpriv->dio_control, NISTC_DIO_CTRL_REG);
3792 udelay((devpriv->serial_interval_ns + 999) / 2000);
3794 /* Input current bit */
3795 if (ni_stc_readw(dev, NISTC_DIO_IN_REG) & NISTC_DIO_SDIN)
3805 static int ni_serial_insn_config(struct comedi_device *dev,
3806 struct comedi_subdevice *s,
3807 struct comedi_insn *insn,
3810 struct ni_private *devpriv = dev->private;
3811 unsigned int clk_fout = devpriv->clock_and_fout;
3813 unsigned char byte_out, byte_in = 0;
3819 case INSN_CONFIG_SERIAL_CLOCK:
3820 devpriv->serial_hw_mode = 1;
3821 devpriv->dio_control |= NISTC_DIO_CTRL_HW_SER_ENA;
3823 if (data[1] == SERIAL_DISABLED) {
3824 devpriv->serial_hw_mode = 0;
3825 devpriv->dio_control &= ~(NISTC_DIO_CTRL_HW_SER_ENA |
3827 data[1] = SERIAL_DISABLED;
3828 devpriv->serial_interval_ns = data[1];
3829 } else if (data[1] <= SERIAL_600NS) {
3831 * Warning: this clock speed is too fast to reliably
3834 devpriv->dio_control &= ~NISTC_DIO_CTRL_HW_SER_TIMEBASE;
3835 clk_fout |= NISTC_CLK_FOUT_SLOW_TIMEBASE;
3836 clk_fout &= ~NISTC_CLK_FOUT_DIO_SER_OUT_DIV2;
3837 data[1] = SERIAL_600NS;
3838 devpriv->serial_interval_ns = data[1];
3839 } else if (data[1] <= SERIAL_1_2US) {
3840 devpriv->dio_control &= ~NISTC_DIO_CTRL_HW_SER_TIMEBASE;
3841 clk_fout |= NISTC_CLK_FOUT_SLOW_TIMEBASE |
3842 NISTC_CLK_FOUT_DIO_SER_OUT_DIV2;
3843 data[1] = SERIAL_1_2US;
3844 devpriv->serial_interval_ns = data[1];
3845 } else if (data[1] <= SERIAL_10US) {
3846 devpriv->dio_control |= NISTC_DIO_CTRL_HW_SER_TIMEBASE;
3847 clk_fout |= NISTC_CLK_FOUT_SLOW_TIMEBASE |
3848 NISTC_CLK_FOUT_DIO_SER_OUT_DIV2;
3850 * Note: NISTC_CLK_FOUT_DIO_SER_OUT_DIV2 only affects
3851 * 600ns/1.2us. If you turn divide_by_2 off with the
3852 * slow clock, you will still get 10us, except then
3853 * all your delays are wrong.
3855 data[1] = SERIAL_10US;
3856 devpriv->serial_interval_ns = data[1];
3858 devpriv->dio_control &= ~(NISTC_DIO_CTRL_HW_SER_ENA |
3860 devpriv->serial_hw_mode = 0;
3861 data[1] = (data[1] / 1000) * 1000;
3862 devpriv->serial_interval_ns = data[1];
3864 devpriv->clock_and_fout = clk_fout;
3866 ni_stc_writew(dev, devpriv->dio_control, NISTC_DIO_CTRL_REG);
3867 ni_stc_writew(dev, devpriv->clock_and_fout, NISTC_CLK_FOUT_REG);
3870 case INSN_CONFIG_BIDIRECTIONAL_DATA:
3872 if (devpriv->serial_interval_ns == 0)
3875 byte_out = data[1] & 0xFF;
3877 if (devpriv->serial_hw_mode) {
3878 err = ni_serial_hw_readwrite8(dev, s, byte_out,
3880 } else if (devpriv->serial_interval_ns > 0) {
3881 err = ni_serial_sw_readwrite8(dev, s, byte_out,
3884 dev_err(dev->class_dev, "serial disabled!\n");
3889 data[1] = byte_in & 0xFF;
3898 static void init_ao_67xx(struct comedi_device *dev, struct comedi_subdevice *s)
3902 for (i = 0; i < s->n_chan; i++) {
3903 ni_ao_win_outw(dev, NI_E_AO_DACSEL(i) | 0x0,
3904 NI67XX_AO_CFG2_REG);
3906 ni_ao_win_outw(dev, 0x0, NI67XX_AO_SP_UPDATES_REG);
3909 static const struct mio_regmap ni_gpct_to_stc_regmap[] = {
3910 [NITIO_G0_AUTO_INC] = { NISTC_G0_AUTOINC_REG, 2 },
3911 [NITIO_G1_AUTO_INC] = { NISTC_G1_AUTOINC_REG, 2 },
3912 [NITIO_G0_CMD] = { NISTC_G0_CMD_REG, 2 },
3913 [NITIO_G1_CMD] = { NISTC_G1_CMD_REG, 2 },
3914 [NITIO_G0_HW_SAVE] = { NISTC_G0_HW_SAVE_REG, 4 },
3915 [NITIO_G1_HW_SAVE] = { NISTC_G1_HW_SAVE_REG, 4 },
3916 [NITIO_G0_SW_SAVE] = { NISTC_G0_SAVE_REG, 4 },
3917 [NITIO_G1_SW_SAVE] = { NISTC_G1_SAVE_REG, 4 },
3918 [NITIO_G0_MODE] = { NISTC_G0_MODE_REG, 2 },
3919 [NITIO_G1_MODE] = { NISTC_G1_MODE_REG, 2 },
3920 [NITIO_G0_LOADA] = { NISTC_G0_LOADA_REG, 4 },
3921 [NITIO_G1_LOADA] = { NISTC_G1_LOADA_REG, 4 },
3922 [NITIO_G0_LOADB] = { NISTC_G0_LOADB_REG, 4 },
3923 [NITIO_G1_LOADB] = { NISTC_G1_LOADB_REG, 4 },
3924 [NITIO_G0_INPUT_SEL] = { NISTC_G0_INPUT_SEL_REG, 2 },
3925 [NITIO_G1_INPUT_SEL] = { NISTC_G1_INPUT_SEL_REG, 2 },
3926 [NITIO_G0_CNT_MODE] = { 0x1b0, 2 }, /* M-Series only */
3927 [NITIO_G1_CNT_MODE] = { 0x1b2, 2 }, /* M-Series only */
3928 [NITIO_G0_GATE2] = { 0x1b4, 2 }, /* M-Series only */
3929 [NITIO_G1_GATE2] = { 0x1b6, 2 }, /* M-Series only */
3930 [NITIO_G01_STATUS] = { NISTC_G01_STATUS_REG, 2 },
3931 [NITIO_G01_RESET] = { NISTC_RESET_REG, 2 },
3932 [NITIO_G01_STATUS1] = { NISTC_STATUS1_REG, 2 },
3933 [NITIO_G01_STATUS2] = { NISTC_STATUS2_REG, 2 },
3934 [NITIO_G0_DMA_CFG] = { 0x1b8, 2 }, /* M-Series only */
3935 [NITIO_G1_DMA_CFG] = { 0x1ba, 2 }, /* M-Series only */
3936 [NITIO_G0_DMA_STATUS] = { 0x1b8, 2 }, /* M-Series only */
3937 [NITIO_G1_DMA_STATUS] = { 0x1ba, 2 }, /* M-Series only */
3938 [NITIO_G0_ABZ] = { 0x1c0, 2 }, /* M-Series only */
3939 [NITIO_G1_ABZ] = { 0x1c2, 2 }, /* M-Series only */
3940 [NITIO_G0_INT_ACK] = { NISTC_INTA_ACK_REG, 2 },
3941 [NITIO_G1_INT_ACK] = { NISTC_INTB_ACK_REG, 2 },
3942 [NITIO_G0_STATUS] = { NISTC_AI_STATUS1_REG, 2 },
3943 [NITIO_G1_STATUS] = { NISTC_AO_STATUS1_REG, 2 },
3944 [NITIO_G0_INT_ENA] = { NISTC_INTA_ENA_REG, 2 },
3945 [NITIO_G1_INT_ENA] = { NISTC_INTB_ENA_REG, 2 },
3948 static unsigned int ni_gpct_to_stc_register(struct comedi_device *dev,
3949 enum ni_gpct_register reg)
3951 const struct mio_regmap *regmap;
3953 if (reg < ARRAY_SIZE(ni_gpct_to_stc_regmap)) {
3954 regmap = &ni_gpct_to_stc_regmap[reg];
3956 dev_warn(dev->class_dev, "%s: unhandled register=0x%x\n",
3961 return regmap->mio_reg;
3964 static void ni_gpct_write_register(struct ni_gpct *counter, unsigned int bits,
3965 enum ni_gpct_register reg)
3967 struct comedi_device *dev = counter->counter_dev->dev;
3968 unsigned int stc_register = ni_gpct_to_stc_register(dev, reg);
3970 if (stc_register == 0)
3974 /* m-series only registers */
3975 case NITIO_G0_CNT_MODE:
3976 case NITIO_G1_CNT_MODE:
3977 case NITIO_G0_GATE2:
3978 case NITIO_G1_GATE2:
3979 case NITIO_G0_DMA_CFG:
3980 case NITIO_G1_DMA_CFG:
3983 ni_writew(dev, bits, stc_register);
3986 /* 32 bit registers */
3987 case NITIO_G0_LOADA:
3988 case NITIO_G1_LOADA:
3989 case NITIO_G0_LOADB:
3990 case NITIO_G1_LOADB:
3991 ni_stc_writel(dev, bits, stc_register);
3994 /* 16 bit registers */
3995 case NITIO_G0_INT_ENA:
3996 ni_set_bitfield(dev, stc_register,
3997 NISTC_INTA_ENA_G0_GATE | NISTC_INTA_ENA_G0_TC,
4000 case NITIO_G1_INT_ENA:
4001 ni_set_bitfield(dev, stc_register,
4002 NISTC_INTB_ENA_G1_GATE | NISTC_INTB_ENA_G1_TC,
4006 ni_stc_writew(dev, bits, stc_register);
4010 static unsigned int ni_gpct_read_register(struct ni_gpct *counter,
4011 enum ni_gpct_register reg)
4013 struct comedi_device *dev = counter->counter_dev->dev;
4014 unsigned int stc_register = ni_gpct_to_stc_register(dev, reg);
4016 if (stc_register == 0)
4020 /* m-series only registers */
4021 case NITIO_G0_DMA_STATUS:
4022 case NITIO_G1_DMA_STATUS:
4023 return ni_readw(dev, stc_register);
4025 /* 32 bit registers */
4026 case NITIO_G0_HW_SAVE:
4027 case NITIO_G1_HW_SAVE:
4028 case NITIO_G0_SW_SAVE:
4029 case NITIO_G1_SW_SAVE:
4030 return ni_stc_readl(dev, stc_register);
4032 /* 16 bit registers */
4034 return ni_stc_readw(dev, stc_register);
4038 static int ni_freq_out_insn_read(struct comedi_device *dev,
4039 struct comedi_subdevice *s,
4040 struct comedi_insn *insn,
4043 struct ni_private *devpriv = dev->private;
4044 unsigned int val = NISTC_CLK_FOUT_TO_DIVIDER(devpriv->clock_and_fout);
4047 for (i = 0; i < insn->n; i++)
4053 static int ni_freq_out_insn_write(struct comedi_device *dev,
4054 struct comedi_subdevice *s,
4055 struct comedi_insn *insn,
4058 struct ni_private *devpriv = dev->private;
4061 unsigned int val = data[insn->n - 1];
4063 devpriv->clock_and_fout &= ~NISTC_CLK_FOUT_ENA;
4064 ni_stc_writew(dev, devpriv->clock_and_fout, NISTC_CLK_FOUT_REG);
4065 devpriv->clock_and_fout &= ~NISTC_CLK_FOUT_DIVIDER_MASK;
4067 /* use the last data value to set the fout divider */
4068 devpriv->clock_and_fout |= NISTC_CLK_FOUT_DIVIDER(val);
4070 devpriv->clock_and_fout |= NISTC_CLK_FOUT_ENA;
4071 ni_stc_writew(dev, devpriv->clock_and_fout, NISTC_CLK_FOUT_REG);
4076 static int ni_freq_out_insn_config(struct comedi_device *dev,
4077 struct comedi_subdevice *s,
4078 struct comedi_insn *insn,
4081 struct ni_private *devpriv = dev->private;
4084 case INSN_CONFIG_SET_CLOCK_SRC:
4086 case NI_FREQ_OUT_TIMEBASE_1_DIV_2_CLOCK_SRC:
4087 devpriv->clock_and_fout &= ~NISTC_CLK_FOUT_TIMEBASE_SEL;
4089 case NI_FREQ_OUT_TIMEBASE_2_CLOCK_SRC:
4090 devpriv->clock_and_fout |= NISTC_CLK_FOUT_TIMEBASE_SEL;
4095 ni_stc_writew(dev, devpriv->clock_and_fout, NISTC_CLK_FOUT_REG);
4097 case INSN_CONFIG_GET_CLOCK_SRC:
4098 if (devpriv->clock_and_fout & NISTC_CLK_FOUT_TIMEBASE_SEL) {
4099 data[1] = NI_FREQ_OUT_TIMEBASE_2_CLOCK_SRC;
4100 data[2] = TIMEBASE_2_NS;
4102 data[1] = NI_FREQ_OUT_TIMEBASE_1_DIV_2_CLOCK_SRC;
4103 data[2] = TIMEBASE_1_NS * 2;
4112 static int ni_8255_callback(struct comedi_device *dev,
4113 int dir, int port, int data, unsigned long iobase)
4116 ni_writeb(dev, data, iobase + 2 * port);
4120 return ni_readb(dev, iobase + 2 * port);
4123 static int ni_get_pwm_config(struct comedi_device *dev, unsigned int *data)
4125 struct ni_private *devpriv = dev->private;
4127 data[1] = devpriv->pwm_up_count * devpriv->clock_ns;
4128 data[2] = devpriv->pwm_down_count * devpriv->clock_ns;
4132 static int ni_m_series_pwm_config(struct comedi_device *dev,
4133 struct comedi_subdevice *s,
4134 struct comedi_insn *insn,
4137 struct ni_private *devpriv = dev->private;
4138 unsigned int up_count, down_count;
4141 case INSN_CONFIG_PWM_OUTPUT:
4143 case CMDF_ROUND_NEAREST:
4144 up_count = DIV_ROUND_CLOSEST(data[2],
4147 case CMDF_ROUND_DOWN:
4148 up_count = data[2] / devpriv->clock_ns;
4152 DIV_ROUND_UP(data[2], devpriv->clock_ns);
4158 case CMDF_ROUND_NEAREST:
4159 down_count = DIV_ROUND_CLOSEST(data[4],
4162 case CMDF_ROUND_DOWN:
4163 down_count = data[4] / devpriv->clock_ns;
4167 DIV_ROUND_UP(data[4], devpriv->clock_ns);
4172 if (up_count * devpriv->clock_ns != data[2] ||
4173 down_count * devpriv->clock_ns != data[4]) {
4174 data[2] = up_count * devpriv->clock_ns;
4175 data[4] = down_count * devpriv->clock_ns;
4178 ni_writel(dev, NI_M_CAL_PWM_HIGH_TIME(up_count) |
4179 NI_M_CAL_PWM_LOW_TIME(down_count),
4181 devpriv->pwm_up_count = up_count;
4182 devpriv->pwm_down_count = down_count;
4184 case INSN_CONFIG_GET_PWM_OUTPUT:
4185 return ni_get_pwm_config(dev, data);
4192 static int ni_6143_pwm_config(struct comedi_device *dev,
4193 struct comedi_subdevice *s,
4194 struct comedi_insn *insn,
4197 struct ni_private *devpriv = dev->private;
4198 unsigned int up_count, down_count;
4201 case INSN_CONFIG_PWM_OUTPUT:
4203 case CMDF_ROUND_NEAREST:
4204 up_count = DIV_ROUND_CLOSEST(data[2],
4207 case CMDF_ROUND_DOWN:
4208 up_count = data[2] / devpriv->clock_ns;
4212 DIV_ROUND_UP(data[2], devpriv->clock_ns);
4218 case CMDF_ROUND_NEAREST:
4219 down_count = DIV_ROUND_CLOSEST(data[4],
4222 case CMDF_ROUND_DOWN:
4223 down_count = data[4] / devpriv->clock_ns;
4227 DIV_ROUND_UP(data[4], devpriv->clock_ns);
4232 if (up_count * devpriv->clock_ns != data[2] ||
4233 down_count * devpriv->clock_ns != data[4]) {
4234 data[2] = up_count * devpriv->clock_ns;
4235 data[4] = down_count * devpriv->clock_ns;
4238 ni_writel(dev, up_count, NI6143_CALIB_HI_TIME_REG);
4239 devpriv->pwm_up_count = up_count;
4240 ni_writel(dev, down_count, NI6143_CALIB_LO_TIME_REG);
4241 devpriv->pwm_down_count = down_count;
4243 case INSN_CONFIG_GET_PWM_OUTPUT:
4244 return ni_get_pwm_config(dev, data);
4251 static int pack_mb88341(int addr, int val, int *bitstring)
4255 * Note that address bits are reversed. Thanks to
4256 * Ingo Keen for noticing this.
4258 * Note also that the 88341 expects address values from
4259 * 1-12, whereas we use channel numbers 0-11. The NI
4260 * docs use 1-12, also, so be careful here.
4263 *bitstring = ((addr & 0x1) << 11) |
4264 ((addr & 0x2) << 9) |
4265 ((addr & 0x4) << 7) | ((addr & 0x8) << 5) | (val & 0xff);
4269 static int pack_dac8800(int addr, int val, int *bitstring)
4271 *bitstring = ((addr & 0x7) << 8) | (val & 0xff);
4275 static int pack_dac8043(int addr, int val, int *bitstring)
4277 *bitstring = val & 0xfff;
4281 static int pack_ad8522(int addr, int val, int *bitstring)
4283 *bitstring = (val & 0xfff) | (addr ? 0xc000 : 0xa000);
4287 static int pack_ad8804(int addr, int val, int *bitstring)
4289 *bitstring = ((addr & 0xf) << 8) | (val & 0xff);
4293 static int pack_ad8842(int addr, int val, int *bitstring)
4295 *bitstring = ((addr + 1) << 8) | (val & 0xff);
4299 struct caldac_struct {
4302 int (*packbits)(int, int, int *);
4305 static struct caldac_struct caldacs[] = {
4306 [mb88341] = {12, 8, pack_mb88341},
4307 [dac8800] = {8, 8, pack_dac8800},
4308 [dac8043] = {1, 12, pack_dac8043},
4309 [ad8522] = {2, 12, pack_ad8522},
4310 [ad8804] = {12, 8, pack_ad8804},
4311 [ad8842] = {8, 8, pack_ad8842},
4312 [ad8804_debug] = {16, 8, pack_ad8804},
4315 static void ni_write_caldac(struct comedi_device *dev, int addr, int val)
4317 const struct ni_board_struct *board = dev->board_ptr;
4318 struct ni_private *devpriv = dev->private;
4319 unsigned int loadbit = 0, bits = 0, bit, bitstring = 0;
4324 if (devpriv->caldacs[addr] == val)
4326 devpriv->caldacs[addr] = val;
4328 for (i = 0; i < 3; i++) {
4329 type = board->caldac[i];
4330 if (type == caldac_none)
4332 if (addr < caldacs[type].n_chans) {
4333 bits = caldacs[type].packbits(addr, val, &bitstring);
4334 loadbit = NI_E_SERIAL_CMD_DAC_LD(i);
4337 addr -= caldacs[type].n_chans;
4340 /* bits will be 0 if there is no caldac for the given addr */
4344 for (bit = 1 << (bits - 1); bit; bit >>= 1) {
4345 cmd = (bit & bitstring) ? NI_E_SERIAL_CMD_SDATA : 0;
4346 ni_writeb(dev, cmd, NI_E_SERIAL_CMD_REG);
4348 ni_writeb(dev, NI_E_SERIAL_CMD_SCLK | cmd, NI_E_SERIAL_CMD_REG);
4351 ni_writeb(dev, loadbit, NI_E_SERIAL_CMD_REG);
4353 ni_writeb(dev, 0, NI_E_SERIAL_CMD_REG);
4356 static int ni_calib_insn_write(struct comedi_device *dev,
4357 struct comedi_subdevice *s,
4358 struct comedi_insn *insn,
4361 ni_write_caldac(dev, CR_CHAN(insn->chanspec), data[0]);
4366 static int ni_calib_insn_read(struct comedi_device *dev,
4367 struct comedi_subdevice *s,
4368 struct comedi_insn *insn,
4371 struct ni_private *devpriv = dev->private;
4373 data[0] = devpriv->caldacs[CR_CHAN(insn->chanspec)];
4378 static void caldac_setup(struct comedi_device *dev, struct comedi_subdevice *s)
4380 const struct ni_board_struct *board = dev->board_ptr;
4381 struct ni_private *devpriv = dev->private;
4390 type = board->caldac[0];
4391 if (type == caldac_none)
4393 n_bits = caldacs[type].n_bits;
4394 for (i = 0; i < 3; i++) {
4395 type = board->caldac[i];
4396 if (type == caldac_none)
4398 if (caldacs[type].n_bits != n_bits)
4400 n_chans += caldacs[type].n_chans;
4403 s->n_chan = n_chans;
4406 unsigned int *maxdata_list = devpriv->caldac_maxdata_list;
4408 if (n_chans > MAX_N_CALDACS)
4409 dev_err(dev->class_dev,
4410 "BUG! MAX_N_CALDACS too small\n");
4411 s->maxdata_list = maxdata_list;
4413 for (i = 0; i < n_dacs; i++) {
4414 type = board->caldac[i];
4415 for (j = 0; j < caldacs[type].n_chans; j++) {
4416 maxdata_list[chan] =
4417 (1 << caldacs[type].n_bits) - 1;
4422 for (chan = 0; chan < s->n_chan; chan++)
4423 ni_write_caldac(dev, i, s->maxdata_list[i] / 2);
4425 type = board->caldac[0];
4426 s->maxdata = (1 << caldacs[type].n_bits) - 1;
4428 for (chan = 0; chan < s->n_chan; chan++)
4429 ni_write_caldac(dev, i, s->maxdata / 2);
4433 static int ni_read_eeprom(struct comedi_device *dev, int addr)
4435 unsigned int cmd = NI_E_SERIAL_CMD_EEPROM_CS;
4439 bitstring = 0x0300 | ((addr & 0x100) << 3) | (addr & 0xff);
4440 ni_writeb(dev, cmd, NI_E_SERIAL_CMD_REG);
4441 for (bit = 0x8000; bit; bit >>= 1) {
4442 if (bit & bitstring)
4443 cmd |= NI_E_SERIAL_CMD_SDATA;
4445 cmd &= ~NI_E_SERIAL_CMD_SDATA;
4447 ni_writeb(dev, cmd, NI_E_SERIAL_CMD_REG);
4448 ni_writeb(dev, NI_E_SERIAL_CMD_SCLK | cmd, NI_E_SERIAL_CMD_REG);
4450 cmd = NI_E_SERIAL_CMD_EEPROM_CS;
4452 for (bit = 0x80; bit; bit >>= 1) {
4453 ni_writeb(dev, cmd, NI_E_SERIAL_CMD_REG);
4454 ni_writeb(dev, NI_E_SERIAL_CMD_SCLK | cmd, NI_E_SERIAL_CMD_REG);
4455 if (ni_readb(dev, NI_E_STATUS_REG) & NI_E_STATUS_PROMOUT)
4458 ni_writeb(dev, 0, NI_E_SERIAL_CMD_REG);
4463 static int ni_eeprom_insn_read(struct comedi_device *dev,
4464 struct comedi_subdevice *s,
4465 struct comedi_insn *insn,
4468 data[0] = ni_read_eeprom(dev, CR_CHAN(insn->chanspec));
4473 static int ni_m_series_eeprom_insn_read(struct comedi_device *dev,
4474 struct comedi_subdevice *s,
4475 struct comedi_insn *insn,
4478 struct ni_private *devpriv = dev->private;
4480 data[0] = devpriv->eeprom_buffer[CR_CHAN(insn->chanspec)];
4485 static unsigned int ni_old_get_pfi_routing(struct comedi_device *dev,
4488 /* pre-m-series boards have fixed signals on pfi pins */
4491 return NI_PFI_OUTPUT_AI_START1;
4493 return NI_PFI_OUTPUT_AI_START2;
4495 return NI_PFI_OUTPUT_AI_CONVERT;
4497 return NI_PFI_OUTPUT_G_SRC1;
4499 return NI_PFI_OUTPUT_G_GATE1;
4501 return NI_PFI_OUTPUT_AO_UPDATE_N;
4503 return NI_PFI_OUTPUT_AO_START1;
4505 return NI_PFI_OUTPUT_AI_START_PULSE;
4507 return NI_PFI_OUTPUT_G_SRC0;
4509 return NI_PFI_OUTPUT_G_GATE0;
4511 dev_err(dev->class_dev, "bug, unhandled case in switch.\n");
4517 static int ni_old_set_pfi_routing(struct comedi_device *dev,
4518 unsigned int chan, unsigned int source)
4520 /* pre-m-series boards have fixed signals on pfi pins */
4521 if (source != ni_old_get_pfi_routing(dev, chan))
4526 static unsigned int ni_m_series_get_pfi_routing(struct comedi_device *dev,
4529 struct ni_private *devpriv = dev->private;
4530 const unsigned int array_offset = chan / 3;
4532 return NI_M_PFI_OUT_SEL_TO_SRC(chan,
4533 devpriv->pfi_output_select_reg[array_offset]);
4536 static int ni_m_series_set_pfi_routing(struct comedi_device *dev,
4537 unsigned int chan, unsigned int source)
4539 struct ni_private *devpriv = dev->private;
4540 unsigned int index = chan / 3;
4541 unsigned short val = devpriv->pfi_output_select_reg[index];
4543 if ((source & 0x1f) != source)
4546 val &= ~NI_M_PFI_OUT_SEL_MASK(chan);
4547 val |= NI_M_PFI_OUT_SEL(chan, source);
4548 ni_writew(dev, val, NI_M_PFI_OUT_SEL_REG(index));
4549 devpriv->pfi_output_select_reg[index] = val;
4554 static unsigned int ni_get_pfi_routing(struct comedi_device *dev,
4557 struct ni_private *devpriv = dev->private;
4559 return (devpriv->is_m_series)
4560 ? ni_m_series_get_pfi_routing(dev, chan)
4561 : ni_old_get_pfi_routing(dev, chan);
4564 static int ni_set_pfi_routing(struct comedi_device *dev,
4565 unsigned int chan, unsigned int source)
4567 struct ni_private *devpriv = dev->private;
4569 return (devpriv->is_m_series)
4570 ? ni_m_series_set_pfi_routing(dev, chan, source)
4571 : ni_old_set_pfi_routing(dev, chan, source);
4574 static int ni_config_filter(struct comedi_device *dev,
4575 unsigned int pfi_channel,
4576 enum ni_pfi_filter_select filter)
4578 struct ni_private *devpriv = dev->private;
4581 if (!devpriv->is_m_series)
4584 bits = ni_readl(dev, NI_M_PFI_FILTER_REG);
4585 bits &= ~NI_M_PFI_FILTER_SEL_MASK(pfi_channel);
4586 bits |= NI_M_PFI_FILTER_SEL(pfi_channel, filter);
4587 ni_writel(dev, bits, NI_M_PFI_FILTER_REG);
4591 static int ni_pfi_insn_config(struct comedi_device *dev,
4592 struct comedi_subdevice *s,
4593 struct comedi_insn *insn,
4596 struct ni_private *devpriv = dev->private;
4602 chan = CR_CHAN(insn->chanspec);
4606 ni_set_bits(dev, NISTC_IO_BIDIR_PIN_REG, 1 << chan, 1);
4609 ni_set_bits(dev, NISTC_IO_BIDIR_PIN_REG, 1 << chan, 0);
4611 case INSN_CONFIG_DIO_QUERY:
4613 (devpriv->io_bidirection_pin_reg & (1 << chan)) ?
4614 COMEDI_OUTPUT : COMEDI_INPUT;
4616 case INSN_CONFIG_SET_ROUTING:
4617 return ni_set_pfi_routing(dev, chan, data[1]);
4618 case INSN_CONFIG_GET_ROUTING:
4619 data[1] = ni_get_pfi_routing(dev, chan);
4621 case INSN_CONFIG_FILTER:
4622 return ni_config_filter(dev, chan, data[1]);
4629 static int ni_pfi_insn_bits(struct comedi_device *dev,
4630 struct comedi_subdevice *s,
4631 struct comedi_insn *insn,
4634 struct ni_private *devpriv = dev->private;
4636 if (!devpriv->is_m_series)
4639 if (comedi_dio_update_state(s, data))
4640 ni_writew(dev, s->state, NI_M_PFI_DO_REG);
4642 data[1] = ni_readw(dev, NI_M_PFI_DI_REG);
4647 static int cs5529_wait_for_idle(struct comedi_device *dev)
4649 unsigned short status;
4650 const int timeout = HZ;
4653 for (i = 0; i < timeout; i++) {
4654 status = ni_ao_win_inw(dev, NI67XX_CAL_STATUS_REG);
4655 if ((status & NI67XX_CAL_STATUS_BUSY) == 0)
4657 set_current_state(TASK_INTERRUPTIBLE);
4658 if (schedule_timeout(1))
4662 dev_err(dev->class_dev, "timeout\n");
4668 static void cs5529_command(struct comedi_device *dev, unsigned short value)
4670 static const int timeout = 100;
4673 ni_ao_win_outw(dev, value, NI67XX_CAL_CMD_REG);
4674 /* give time for command to start being serially clocked into cs5529.
4675 * this insures that the NI67XX_CAL_STATUS_BUSY bit will get properly
4676 * set before we exit this function.
4678 for (i = 0; i < timeout; i++) {
4679 if (ni_ao_win_inw(dev, NI67XX_CAL_STATUS_REG) &
4680 NI67XX_CAL_STATUS_BUSY)
4685 dev_err(dev->class_dev,
4686 "possible problem - never saw adc go busy?\n");
4689 static int cs5529_do_conversion(struct comedi_device *dev,
4690 unsigned short *data)
4693 unsigned short status;
4695 cs5529_command(dev, CS5529_CMD_CB | CS5529_CMD_SINGLE_CONV);
4696 retval = cs5529_wait_for_idle(dev);
4698 dev_err(dev->class_dev,
4699 "timeout or signal in cs5529_do_conversion()\n");
4702 status = ni_ao_win_inw(dev, NI67XX_CAL_STATUS_REG);
4703 if (status & NI67XX_CAL_STATUS_OSC_DETECT) {
4704 dev_err(dev->class_dev,
4705 "cs5529 conversion error, status CSS_OSC_DETECT\n");
4708 if (status & NI67XX_CAL_STATUS_OVERRANGE) {
4709 dev_err(dev->class_dev,
4710 "cs5529 conversion error, overrange (ignoring)\n");
4713 *data = ni_ao_win_inw(dev, NI67XX_CAL_DATA_REG);
4714 /* cs5529 returns 16 bit signed data in bipolar mode */
4720 static int cs5529_ai_insn_read(struct comedi_device *dev,
4721 struct comedi_subdevice *s,
4722 struct comedi_insn *insn,
4726 unsigned short sample;
4727 unsigned int channel_select;
4728 const unsigned int INTERNAL_REF = 0x1000;
4731 * Set calibration adc source. Docs lie, reference select bits 8 to 11
4732 * do nothing. bit 12 seems to chooses internal reference voltage, bit
4733 * 13 causes the adc input to go overrange (maybe reads external
4736 if (insn->chanspec & CR_ALT_SOURCE)
4737 channel_select = INTERNAL_REF;
4739 channel_select = CR_CHAN(insn->chanspec);
4740 ni_ao_win_outw(dev, channel_select, NI67XX_AO_CAL_CHAN_SEL_REG);
4742 for (n = 0; n < insn->n; n++) {
4743 retval = cs5529_do_conversion(dev, &sample);
4751 static void cs5529_config_write(struct comedi_device *dev, unsigned int value,
4752 unsigned int reg_select_bits)
4754 ni_ao_win_outw(dev, (value >> 16) & 0xff, NI67XX_CAL_CFG_HI_REG);
4755 ni_ao_win_outw(dev, value & 0xffff, NI67XX_CAL_CFG_LO_REG);
4756 reg_select_bits &= CS5529_CMD_REG_MASK;
4757 cs5529_command(dev, CS5529_CMD_CB | reg_select_bits);
4758 if (cs5529_wait_for_idle(dev))
4759 dev_err(dev->class_dev,
4760 "timeout or signal in %s\n", __func__);
4763 static int init_cs5529(struct comedi_device *dev)
4765 unsigned int config_bits = CS5529_CFG_PORT_FLAG |
4766 CS5529_CFG_WORD_RATE_2180;
4769 /* do self-calibration */
4770 cs5529_config_write(dev, config_bits | CS5529_CFG_CALIB_BOTH_SELF,
4772 /* need to force a conversion for calibration to run */
4773 cs5529_do_conversion(dev, NULL);
4775 /* force gain calibration to 1 */
4776 cs5529_config_write(dev, 0x400000, CS5529_GAIN_REG);
4777 cs5529_config_write(dev, config_bits | CS5529_CFG_CALIB_OFFSET_SELF,
4779 if (cs5529_wait_for_idle(dev))
4780 dev_err(dev->class_dev,
4781 "timeout or signal in %s\n", __func__);
4787 * Find best multiplier/divider to try and get the PLL running at 80 MHz
4788 * given an arbitrary frequency input clock.
4790 static int ni_mseries_get_pll_parameters(unsigned int reference_period_ns,
4791 unsigned int *freq_divider,
4792 unsigned int *freq_multiplier,
4793 unsigned int *actual_period_ns)
4796 unsigned int best_div = 1;
4798 unsigned int best_mult = 1;
4799 static const unsigned int pico_per_nano = 1000;
4800 const unsigned int reference_picosec = reference_period_ns *
4803 * m-series wants the phased-locked loop to output 80MHz, which is
4804 * divided by 4 to 20 MHz for most timing clocks
4806 static const unsigned int target_picosec = 12500;
4807 int best_period_picosec = 0;
4809 for (div = 1; div <= NI_M_PLL_MAX_DIVISOR; ++div) {
4810 for (mult = 1; mult <= NI_M_PLL_MAX_MULTIPLIER; ++mult) {
4811 unsigned int new_period_ps =
4812 (reference_picosec * div) / mult;
4813 if (abs(new_period_ps - target_picosec) <
4814 abs(best_period_picosec - target_picosec)) {
4815 best_period_picosec = new_period_ps;
4821 if (best_period_picosec == 0)
4824 *freq_divider = best_div;
4825 *freq_multiplier = best_mult;
4826 /* return the actual period (* fudge factor for 80 to 20 MHz) */
4827 *actual_period_ns = DIV_ROUND_CLOSEST(best_period_picosec * 4,
4832 static int ni_mseries_set_pll_master_clock(struct comedi_device *dev,
4833 unsigned int source,
4834 unsigned int period_ns)
4836 struct ni_private *devpriv = dev->private;
4837 static const unsigned int min_period_ns = 50;
4838 static const unsigned int max_period_ns = 1000;
4839 static const unsigned int timeout = 1000;
4840 unsigned int pll_control_bits;
4841 unsigned int freq_divider;
4842 unsigned int freq_multiplier;
4847 if (source == NI_MIO_PLL_PXI10_CLOCK)
4850 * These limits are somewhat arbitrary, but NI advertises 1 to 20MHz
4851 * range so we'll use that.
4853 if (period_ns < min_period_ns || period_ns > max_period_ns) {
4854 dev_err(dev->class_dev,
4855 "%s: you must specify an input clock frequency between %i and %i nanosec for the phased-lock loop\n",
4856 __func__, min_period_ns, max_period_ns);
4859 devpriv->rtsi_trig_direction_reg &= ~NISTC_RTSI_TRIG_USE_CLK;
4860 ni_stc_writew(dev, devpriv->rtsi_trig_direction_reg,
4861 NISTC_RTSI_TRIG_DIR_REG);
4862 pll_control_bits = NI_M_PLL_CTRL_ENA | NI_M_PLL_CTRL_VCO_MODE_75_150MHZ;
4863 devpriv->clock_and_fout2 |= NI_M_CLK_FOUT2_TIMEBASE1_PLL |
4864 NI_M_CLK_FOUT2_TIMEBASE3_PLL;
4865 devpriv->clock_and_fout2 &= ~NI_M_CLK_FOUT2_PLL_SRC_MASK;
4867 case NI_MIO_PLL_PXI_STAR_TRIGGER_CLOCK:
4868 devpriv->clock_and_fout2 |= NI_M_CLK_FOUT2_PLL_SRC_STAR;
4870 case NI_MIO_PLL_PXI10_CLOCK:
4871 /* pxi clock is 10MHz */
4872 devpriv->clock_and_fout2 |= NI_M_CLK_FOUT2_PLL_SRC_PXI10;
4875 for (rtsi = 0; rtsi <= NI_M_MAX_RTSI_CHAN; ++rtsi) {
4876 if (source == NI_MIO_PLL_RTSI_CLOCK(rtsi)) {
4877 devpriv->clock_and_fout2 |=
4878 NI_M_CLK_FOUT2_PLL_SRC_RTSI(rtsi);
4882 if (rtsi > NI_M_MAX_RTSI_CHAN)
4886 retval = ni_mseries_get_pll_parameters(period_ns,
4889 &devpriv->clock_ns);
4891 dev_err(dev->class_dev,
4892 "bug, failed to find pll parameters\n");
4896 ni_writew(dev, devpriv->clock_and_fout2, NI_M_CLK_FOUT2_REG);
4897 pll_control_bits |= NI_M_PLL_CTRL_DIVISOR(freq_divider) |
4898 NI_M_PLL_CTRL_MULTIPLIER(freq_multiplier);
4900 ni_writew(dev, pll_control_bits, NI_M_PLL_CTRL_REG);
4901 devpriv->clock_source = source;
4902 /* it takes a few hundred microseconds for PLL to lock */
4903 for (i = 0; i < timeout; ++i) {
4904 if (ni_readw(dev, NI_M_PLL_STATUS_REG) & NI_M_PLL_STATUS_LOCKED)
4909 dev_err(dev->class_dev,
4910 "%s: timed out waiting for PLL to lock to reference clock source %i with period %i ns\n",
4911 __func__, source, period_ns);
4917 static int ni_set_master_clock(struct comedi_device *dev,
4918 unsigned int source, unsigned int period_ns)
4920 struct ni_private *devpriv = dev->private;
4922 if (source == NI_MIO_INTERNAL_CLOCK) {
4923 devpriv->rtsi_trig_direction_reg &= ~NISTC_RTSI_TRIG_USE_CLK;
4924 ni_stc_writew(dev, devpriv->rtsi_trig_direction_reg,
4925 NISTC_RTSI_TRIG_DIR_REG);
4926 devpriv->clock_ns = TIMEBASE_1_NS;
4927 if (devpriv->is_m_series) {
4928 devpriv->clock_and_fout2 &=
4929 ~(NI_M_CLK_FOUT2_TIMEBASE1_PLL |
4930 NI_M_CLK_FOUT2_TIMEBASE3_PLL);
4931 ni_writew(dev, devpriv->clock_and_fout2,
4932 NI_M_CLK_FOUT2_REG);
4933 ni_writew(dev, 0, NI_M_PLL_CTRL_REG);
4935 devpriv->clock_source = source;
4937 if (devpriv->is_m_series) {
4938 return ni_mseries_set_pll_master_clock(dev, source,
4941 if (source == NI_MIO_RTSI_CLOCK) {
4942 devpriv->rtsi_trig_direction_reg |=
4943 NISTC_RTSI_TRIG_USE_CLK;
4945 devpriv->rtsi_trig_direction_reg,
4946 NISTC_RTSI_TRIG_DIR_REG);
4947 if (period_ns == 0) {
4948 dev_err(dev->class_dev,
4949 "we don't handle an unspecified clock period correctly yet, returning error\n");
4952 devpriv->clock_ns = period_ns;
4953 devpriv->clock_source = source;
4962 static int ni_valid_rtsi_output_source(struct comedi_device *dev,
4963 unsigned int chan, unsigned int source)
4965 struct ni_private *devpriv = dev->private;
4967 if (chan >= NISTC_RTSI_TRIG_NUM_CHAN(devpriv->is_m_series)) {
4968 if (chan == NISTC_RTSI_TRIG_OLD_CLK_CHAN) {
4969 if (source == NI_RTSI_OUTPUT_RTSI_OSC)
4972 dev_err(dev->class_dev,
4973 "%s: invalid source for channel=%i, channel %i is always the RTSI clock for pre-m-series boards\n",
4974 __func__, chan, NISTC_RTSI_TRIG_OLD_CLK_CHAN);
4980 case NI_RTSI_OUTPUT_ADR_START1:
4981 case NI_RTSI_OUTPUT_ADR_START2:
4982 case NI_RTSI_OUTPUT_SCLKG:
4983 case NI_RTSI_OUTPUT_DACUPDN:
4984 case NI_RTSI_OUTPUT_DA_START1:
4985 case NI_RTSI_OUTPUT_G_SRC0:
4986 case NI_RTSI_OUTPUT_G_GATE0:
4987 case NI_RTSI_OUTPUT_RGOUT0:
4988 case NI_RTSI_OUTPUT_RTSI_BRD_0:
4990 case NI_RTSI_OUTPUT_RTSI_OSC:
4991 return (devpriv->is_m_series) ? 1 : 0;
4997 static int ni_set_rtsi_routing(struct comedi_device *dev,
4998 unsigned int chan, unsigned int src)
5000 struct ni_private *devpriv = dev->private;
5002 if (ni_valid_rtsi_output_source(dev, chan, src) == 0)
5005 devpriv->rtsi_trig_a_output_reg &= ~NISTC_RTSI_TRIG_MASK(chan);
5006 devpriv->rtsi_trig_a_output_reg |= NISTC_RTSI_TRIG(chan, src);
5007 ni_stc_writew(dev, devpriv->rtsi_trig_a_output_reg,
5008 NISTC_RTSI_TRIGA_OUT_REG);
5009 } else if (chan < 8) {
5010 devpriv->rtsi_trig_b_output_reg &= ~NISTC_RTSI_TRIG_MASK(chan);
5011 devpriv->rtsi_trig_b_output_reg |= NISTC_RTSI_TRIG(chan, src);
5012 ni_stc_writew(dev, devpriv->rtsi_trig_b_output_reg,
5013 NISTC_RTSI_TRIGB_OUT_REG);
5018 static unsigned int ni_get_rtsi_routing(struct comedi_device *dev,
5021 struct ni_private *devpriv = dev->private;
5024 return NISTC_RTSI_TRIG_TO_SRC(chan,
5025 devpriv->rtsi_trig_a_output_reg);
5026 } else if (chan < NISTC_RTSI_TRIG_NUM_CHAN(devpriv->is_m_series)) {
5027 return NISTC_RTSI_TRIG_TO_SRC(chan,
5028 devpriv->rtsi_trig_b_output_reg);
5030 if (chan == NISTC_RTSI_TRIG_OLD_CLK_CHAN)
5031 return NI_RTSI_OUTPUT_RTSI_OSC;
5032 dev_err(dev->class_dev, "bug! should never get here?\n");
5037 static int ni_rtsi_insn_config(struct comedi_device *dev,
5038 struct comedi_subdevice *s,
5039 struct comedi_insn *insn,
5042 struct ni_private *devpriv = dev->private;
5043 unsigned int chan = CR_CHAN(insn->chanspec);
5044 unsigned int max_chan = NISTC_RTSI_TRIG_NUM_CHAN(devpriv->is_m_series);
5047 case INSN_CONFIG_DIO_OUTPUT:
5048 if (chan < max_chan) {
5049 devpriv->rtsi_trig_direction_reg |=
5050 NISTC_RTSI_TRIG_DIR(chan, devpriv->is_m_series);
5051 } else if (chan == NISTC_RTSI_TRIG_OLD_CLK_CHAN) {
5052 devpriv->rtsi_trig_direction_reg |=
5053 NISTC_RTSI_TRIG_DRV_CLK;
5055 ni_stc_writew(dev, devpriv->rtsi_trig_direction_reg,
5056 NISTC_RTSI_TRIG_DIR_REG);
5058 case INSN_CONFIG_DIO_INPUT:
5059 if (chan < max_chan) {
5060 devpriv->rtsi_trig_direction_reg &=
5061 ~NISTC_RTSI_TRIG_DIR(chan, devpriv->is_m_series);
5062 } else if (chan == NISTC_RTSI_TRIG_OLD_CLK_CHAN) {
5063 devpriv->rtsi_trig_direction_reg &=
5064 ~NISTC_RTSI_TRIG_DRV_CLK;
5066 ni_stc_writew(dev, devpriv->rtsi_trig_direction_reg,
5067 NISTC_RTSI_TRIG_DIR_REG);
5069 case INSN_CONFIG_DIO_QUERY:
5070 if (chan < max_chan) {
5072 (devpriv->rtsi_trig_direction_reg &
5073 NISTC_RTSI_TRIG_DIR(chan, devpriv->is_m_series))
5074 ? INSN_CONFIG_DIO_OUTPUT
5075 : INSN_CONFIG_DIO_INPUT;
5076 } else if (chan == NISTC_RTSI_TRIG_OLD_CLK_CHAN) {
5077 data[1] = (devpriv->rtsi_trig_direction_reg &
5078 NISTC_RTSI_TRIG_DRV_CLK)
5079 ? INSN_CONFIG_DIO_OUTPUT
5080 : INSN_CONFIG_DIO_INPUT;
5083 case INSN_CONFIG_SET_CLOCK_SRC:
5084 return ni_set_master_clock(dev, data[1], data[2]);
5085 case INSN_CONFIG_GET_CLOCK_SRC:
5086 data[1] = devpriv->clock_source;
5087 data[2] = devpriv->clock_ns;
5089 case INSN_CONFIG_SET_ROUTING:
5090 return ni_set_rtsi_routing(dev, chan, data[1]);
5091 case INSN_CONFIG_GET_ROUTING:
5092 data[1] = ni_get_rtsi_routing(dev, chan);
5100 static int ni_rtsi_insn_bits(struct comedi_device *dev,
5101 struct comedi_subdevice *s,
5102 struct comedi_insn *insn,
5110 static void ni_rtsi_init(struct comedi_device *dev)
5112 struct ni_private *devpriv = dev->private;
5114 /* Initialises the RTSI bus signal switch to a default state */
5117 * Use 10MHz instead of 20MHz for RTSI clock frequency. Appears
5118 * to have no effect, at least on pxi-6281, which always uses
5119 * 20MHz rtsi clock frequency
5121 devpriv->clock_and_fout2 = NI_M_CLK_FOUT2_RTSI_10MHZ;
5122 /* Set clock mode to internal */
5123 if (ni_set_master_clock(dev, NI_MIO_INTERNAL_CLOCK, 0) < 0)
5124 dev_err(dev->class_dev, "ni_set_master_clock failed, bug?\n");
5125 /* default internal lines routing to RTSI bus lines */
5126 devpriv->rtsi_trig_a_output_reg =
5127 NISTC_RTSI_TRIG(0, NI_RTSI_OUTPUT_ADR_START1) |
5128 NISTC_RTSI_TRIG(1, NI_RTSI_OUTPUT_ADR_START2) |
5129 NISTC_RTSI_TRIG(2, NI_RTSI_OUTPUT_SCLKG) |
5130 NISTC_RTSI_TRIG(3, NI_RTSI_OUTPUT_DACUPDN);
5131 ni_stc_writew(dev, devpriv->rtsi_trig_a_output_reg,
5132 NISTC_RTSI_TRIGA_OUT_REG);
5133 devpriv->rtsi_trig_b_output_reg =
5134 NISTC_RTSI_TRIG(4, NI_RTSI_OUTPUT_DA_START1) |
5135 NISTC_RTSI_TRIG(5, NI_RTSI_OUTPUT_G_SRC0) |
5136 NISTC_RTSI_TRIG(6, NI_RTSI_OUTPUT_G_GATE0);
5137 if (devpriv->is_m_series)
5138 devpriv->rtsi_trig_b_output_reg |=
5139 NISTC_RTSI_TRIG(7, NI_RTSI_OUTPUT_RTSI_OSC);
5140 ni_stc_writew(dev, devpriv->rtsi_trig_b_output_reg,
5141 NISTC_RTSI_TRIGB_OUT_REG);
5144 * Sets the source and direction of the 4 on board lines
5145 * ni_stc_writew(dev, 0, NISTC_RTSI_BOARD_REG);
5150 static int ni_gpct_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
5152 struct ni_gpct *counter = s->private;
5155 retval = ni_request_gpct_mite_channel(dev, counter->counter_index,
5158 dev_err(dev->class_dev,
5159 "no dma channel available for use by counter\n");
5162 ni_tio_acknowledge(counter);
5163 ni_e_series_enable_second_irq(dev, counter->counter_index, 1);
5165 return ni_tio_cmd(dev, s);
5168 static int ni_gpct_cancel(struct comedi_device *dev, struct comedi_subdevice *s)
5170 struct ni_gpct *counter = s->private;
5173 retval = ni_tio_cancel(counter);
5174 ni_e_series_enable_second_irq(dev, counter->counter_index, 0);
5175 ni_release_gpct_mite_channel(dev, counter->counter_index);
5180 static irqreturn_t ni_E_interrupt(int irq, void *d)
5182 struct comedi_device *dev = d;
5183 struct comedi_subdevice *s_ai = dev->read_subdev;
5184 struct comedi_subdevice *s_ao = dev->write_subdev;
5185 unsigned short a_status;
5186 unsigned short b_status;
5187 unsigned long flags;
5189 struct ni_private *devpriv = dev->private;
5194 smp_mb(); /* make sure dev->attached is checked */
5196 /* lock to avoid race with comedi_poll */
5197 spin_lock_irqsave(&dev->spinlock, flags);
5198 a_status = ni_stc_readw(dev, NISTC_AI_STATUS1_REG);
5199 b_status = ni_stc_readw(dev, NISTC_AO_STATUS1_REG);
5201 if (devpriv->mite) {
5202 unsigned long flags_too;
5204 spin_lock_irqsave(&devpriv->mite_channel_lock, flags_too);
5205 if (s_ai && devpriv->ai_mite_chan)
5206 mite_ack_linkc(devpriv->ai_mite_chan, s_ai, false);
5207 if (s_ao && devpriv->ao_mite_chan)
5208 mite_ack_linkc(devpriv->ao_mite_chan, s_ao, false);
5209 spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags_too);
5212 ack_a_interrupt(dev, a_status);
5213 ack_b_interrupt(dev, b_status);
5215 if (a_status & NISTC_AI_STATUS1_INTA)
5216 handle_a_interrupt(dev, s_ai, a_status);
5217 /* handle any interrupt or dma events */
5218 comedi_handle_events(dev, s_ai);
5221 if (b_status & NISTC_AO_STATUS1_INTB)
5222 handle_b_interrupt(dev, s_ao, b_status);
5223 /* handle any interrupt or dma events */
5224 comedi_handle_events(dev, s_ao);
5226 handle_gpct_interrupt(dev, 0);
5227 handle_gpct_interrupt(dev, 1);
5229 if (devpriv->is_m_series)
5230 handle_cdio_interrupt(dev);
5233 spin_unlock_irqrestore(&dev->spinlock, flags);
5237 static int ni_alloc_private(struct comedi_device *dev)
5239 struct ni_private *devpriv;
5241 devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
5245 spin_lock_init(&devpriv->window_lock);
5246 spin_lock_init(&devpriv->soft_reg_copy_lock);
5247 spin_lock_init(&devpriv->mite_channel_lock);
5252 static int ni_E_init(struct comedi_device *dev,
5253 unsigned int interrupt_pin, unsigned int irq_polarity)
5255 const struct ni_board_struct *board = dev->board_ptr;
5256 struct ni_private *devpriv = dev->private;
5257 struct comedi_subdevice *s;
5261 if (board->n_aochan > MAX_N_AO_CHAN) {
5262 dev_err(dev->class_dev, "bug! n_aochan > MAX_N_AO_CHAN\n");
5266 /* initialize clock dividers */
5267 devpriv->clock_and_fout = NISTC_CLK_FOUT_SLOW_DIV2 |
5268 NISTC_CLK_FOUT_SLOW_TIMEBASE |
5269 NISTC_CLK_FOUT_TO_BOARD_DIV2 |
5270 NISTC_CLK_FOUT_TO_BOARD;
5271 if (!devpriv->is_6xxx) {
5272 /* BEAM is this needed for PCI-6143 ?? */
5273 devpriv->clock_and_fout |= (NISTC_CLK_FOUT_AI_OUT_DIV2 |
5274 NISTC_CLK_FOUT_AO_OUT_DIV2);
5276 ni_stc_writew(dev, devpriv->clock_and_fout, NISTC_CLK_FOUT_REG);
5278 ret = comedi_alloc_subdevices(dev, NI_NUM_SUBDEVICES);
5282 /* Analog Input subdevice */
5283 s = &dev->subdevices[NI_AI_SUBDEV];
5284 if (board->n_adchan) {
5285 s->type = COMEDI_SUBD_AI;
5286 s->subdev_flags = SDF_READABLE | SDF_DIFF | SDF_DITHER;
5287 if (!devpriv->is_611x)
5288 s->subdev_flags |= SDF_GROUND | SDF_COMMON | SDF_OTHER;
5289 if (board->ai_maxdata > 0xffff)
5290 s->subdev_flags |= SDF_LSAMPL;
5291 if (devpriv->is_m_series)
5292 s->subdev_flags |= SDF_SOFT_CALIBRATED;
5293 s->n_chan = board->n_adchan;
5294 s->maxdata = board->ai_maxdata;
5295 s->range_table = ni_range_lkup[board->gainlkup];
5296 s->insn_read = ni_ai_insn_read;
5297 s->insn_config = ni_ai_insn_config;
5299 dev->read_subdev = s;
5300 s->subdev_flags |= SDF_CMD_READ;
5301 s->len_chanlist = 512;
5302 s->do_cmdtest = ni_ai_cmdtest;
5303 s->do_cmd = ni_ai_cmd;
5304 s->cancel = ni_ai_reset;
5305 s->poll = ni_ai_poll;
5306 s->munge = ni_ai_munge;
5309 s->async_dma_dir = DMA_FROM_DEVICE;
5312 /* reset the analog input configuration */
5313 ni_ai_reset(dev, s);
5315 s->type = COMEDI_SUBD_UNUSED;
5318 /* Analog Output subdevice */
5319 s = &dev->subdevices[NI_AO_SUBDEV];
5320 if (board->n_aochan) {
5321 s->type = COMEDI_SUBD_AO;
5322 s->subdev_flags = SDF_WRITABLE | SDF_DEGLITCH | SDF_GROUND;
5323 if (devpriv->is_m_series)
5324 s->subdev_flags |= SDF_SOFT_CALIBRATED;
5325 s->n_chan = board->n_aochan;
5326 s->maxdata = board->ao_maxdata;
5327 s->range_table = board->ao_range_table;
5328 s->insn_config = ni_ao_insn_config;
5329 s->insn_write = ni_ao_insn_write;
5331 ret = comedi_alloc_subdev_readback(s);
5336 * Along with the IRQ we need either a FIFO or DMA for
5337 * async command support.
5339 if (dev->irq && (board->ao_fifo_depth || devpriv->mite)) {
5340 dev->write_subdev = s;
5341 s->subdev_flags |= SDF_CMD_WRITE;
5342 s->len_chanlist = s->n_chan;
5343 s->do_cmdtest = ni_ao_cmdtest;
5344 s->do_cmd = ni_ao_cmd;
5345 s->cancel = ni_ao_reset;
5346 if (!devpriv->is_m_series)
5347 s->munge = ni_ao_munge;
5350 s->async_dma_dir = DMA_TO_DEVICE;
5353 if (devpriv->is_67xx)
5354 init_ao_67xx(dev, s);
5356 /* reset the analog output configuration */
5357 ni_ao_reset(dev, s);
5359 s->type = COMEDI_SUBD_UNUSED;
5362 /* Digital I/O subdevice */
5363 s = &dev->subdevices[NI_DIO_SUBDEV];
5364 s->type = COMEDI_SUBD_DIO;
5365 s->subdev_flags = SDF_WRITABLE | SDF_READABLE;
5366 s->n_chan = board->has_32dio_chan ? 32 : 8;
5368 s->range_table = &range_digital;
5369 if (devpriv->is_m_series) {
5371 s->subdev_flags |= SDF_LSAMPL;
5372 s->insn_bits = ni_m_series_dio_insn_bits;
5373 s->insn_config = ni_m_series_dio_insn_config;
5375 s->subdev_flags |= SDF_CMD_WRITE /* | SDF_CMD_READ */;
5376 s->len_chanlist = s->n_chan;
5377 s->do_cmdtest = ni_cdio_cmdtest;
5378 s->do_cmd = ni_cdio_cmd;
5379 s->cancel = ni_cdio_cancel;
5381 /* M-series boards use DMA */
5382 s->async_dma_dir = DMA_BIDIRECTIONAL;
5385 /* reset DIO and set all channels to inputs */
5386 ni_writel(dev, NI_M_CDO_CMD_RESET |
5389 ni_writel(dev, s->io_bits, NI_M_DIO_DIR_REG);
5392 s->insn_bits = ni_dio_insn_bits;
5393 s->insn_config = ni_dio_insn_config;
5395 /* set all channels to inputs */
5396 devpriv->dio_control = NISTC_DIO_CTRL_DIR(s->io_bits);
5397 ni_writew(dev, devpriv->dio_control, NISTC_DIO_CTRL_REG);
5401 s = &dev->subdevices[NI_8255_DIO_SUBDEV];
5402 if (board->has_8255) {
5403 ret = subdev_8255_init(dev, s, ni_8255_callback,
5408 s->type = COMEDI_SUBD_UNUSED;
5411 /* formerly general purpose counter/timer device, but no longer used */
5412 s = &dev->subdevices[NI_UNUSED_SUBDEV];
5413 s->type = COMEDI_SUBD_UNUSED;
5415 /* Calibration subdevice */
5416 s = &dev->subdevices[NI_CALIBRATION_SUBDEV];
5417 s->type = COMEDI_SUBD_CALIB;
5418 s->subdev_flags = SDF_INTERNAL;
5421 if (devpriv->is_m_series) {
5422 /* internal PWM output used for AI nonlinearity calibration */
5423 s->insn_config = ni_m_series_pwm_config;
5425 ni_writel(dev, 0x0, NI_M_CAL_PWM_REG);
5426 } else if (devpriv->is_6143) {
5427 /* internal PWM output used for AI nonlinearity calibration */
5428 s->insn_config = ni_6143_pwm_config;
5430 s->subdev_flags |= SDF_WRITABLE;
5431 s->insn_read = ni_calib_insn_read;
5432 s->insn_write = ni_calib_insn_write;
5434 /* setup the caldacs and find the real n_chan and maxdata */
5435 caldac_setup(dev, s);
5438 /* EEPROM subdevice */
5439 s = &dev->subdevices[NI_EEPROM_SUBDEV];
5440 s->type = COMEDI_SUBD_MEMORY;
5441 s->subdev_flags = SDF_READABLE | SDF_INTERNAL;
5443 if (devpriv->is_m_series) {
5444 s->n_chan = M_SERIES_EEPROM_SIZE;
5445 s->insn_read = ni_m_series_eeprom_insn_read;
5448 s->insn_read = ni_eeprom_insn_read;
5451 /* Digital I/O (PFI) subdevice */
5452 s = &dev->subdevices[NI_PFI_DIO_SUBDEV];
5453 s->type = COMEDI_SUBD_DIO;
5454 s->subdev_flags = SDF_READABLE | SDF_WRITABLE | SDF_INTERNAL;
5456 if (devpriv->is_m_series) {
5458 s->insn_bits = ni_pfi_insn_bits;
5460 ni_writew(dev, s->state, NI_M_PFI_DO_REG);
5461 for (i = 0; i < NUM_PFI_OUTPUT_SELECT_REGS; ++i) {
5462 ni_writew(dev, devpriv->pfi_output_select_reg[i],
5463 NI_M_PFI_OUT_SEL_REG(i));
5468 s->insn_config = ni_pfi_insn_config;
5470 ni_set_bits(dev, NISTC_IO_BIDIR_PIN_REG, ~0, 0);
5472 /* cs5529 calibration adc */
5473 s = &dev->subdevices[NI_CS5529_CALIBRATION_SUBDEV];
5474 if (devpriv->is_67xx) {
5475 s->type = COMEDI_SUBD_AI;
5476 s->subdev_flags = SDF_READABLE | SDF_DIFF | SDF_INTERNAL;
5477 /* one channel for each analog output channel */
5478 s->n_chan = board->n_aochan;
5479 s->maxdata = (1 << 16) - 1;
5480 s->range_table = &range_unknown; /* XXX */
5481 s->insn_read = cs5529_ai_insn_read;
5482 s->insn_config = NULL;
5485 s->type = COMEDI_SUBD_UNUSED;
5489 s = &dev->subdevices[NI_SERIAL_SUBDEV];
5490 s->type = COMEDI_SUBD_SERIAL;
5491 s->subdev_flags = SDF_READABLE | SDF_WRITABLE | SDF_INTERNAL;
5494 s->insn_config = ni_serial_insn_config;
5495 devpriv->serial_interval_ns = 0;
5496 devpriv->serial_hw_mode = 0;
5499 s = &dev->subdevices[NI_RTSI_SUBDEV];
5500 s->type = COMEDI_SUBD_DIO;
5501 s->subdev_flags = SDF_READABLE | SDF_WRITABLE | SDF_INTERNAL;
5504 s->insn_bits = ni_rtsi_insn_bits;
5505 s->insn_config = ni_rtsi_insn_config;
5508 /* allocate and initialize the gpct counter device */
5509 devpriv->counter_dev = ni_gpct_device_construct(dev,
5510 ni_gpct_write_register,
5511 ni_gpct_read_register,
5512 (devpriv->is_m_series)
5513 ? ni_gpct_variant_m_series
5514 : ni_gpct_variant_e_series,
5516 if (!devpriv->counter_dev)
5519 /* Counter (gpct) subdevices */
5520 for (i = 0; i < NUM_GPCT; ++i) {
5521 struct ni_gpct *gpct = &devpriv->counter_dev->counters[i];
5523 /* setup and initialize the counter */
5524 gpct->chip_index = 0;
5525 gpct->counter_index = i;
5526 ni_tio_init_counter(gpct);
5528 s = &dev->subdevices[NI_GPCT_SUBDEV(i)];
5529 s->type = COMEDI_SUBD_COUNTER;
5530 s->subdev_flags = SDF_READABLE | SDF_WRITABLE | SDF_LSAMPL;
5532 s->maxdata = (devpriv->is_m_series) ? 0xffffffff
5534 s->insn_read = ni_tio_insn_read;
5535 s->insn_write = ni_tio_insn_write;
5536 s->insn_config = ni_tio_insn_config;
5538 if (dev->irq && devpriv->mite) {
5539 s->subdev_flags |= SDF_CMD_READ /* | SDF_CMD_WRITE */;
5540 s->len_chanlist = 1;
5541 s->do_cmdtest = ni_tio_cmdtest;
5542 s->do_cmd = ni_gpct_cmd;
5543 s->cancel = ni_gpct_cancel;
5545 s->async_dma_dir = DMA_BIDIRECTIONAL;
5551 /* Frequency output subdevice */
5552 s = &dev->subdevices[NI_FREQ_OUT_SUBDEV];
5553 s->type = COMEDI_SUBD_COUNTER;
5554 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
5557 s->insn_read = ni_freq_out_insn_read;
5558 s->insn_write = ni_freq_out_insn_write;
5559 s->insn_config = ni_freq_out_insn_config;
5563 (irq_polarity ? NISTC_INT_CTRL_INT_POL : 0) |
5564 (NISTC_INT_CTRL_3PIN_INT & 0) |
5565 NISTC_INT_CTRL_INTA_ENA |
5566 NISTC_INT_CTRL_INTB_ENA |
5567 NISTC_INT_CTRL_INTA_SEL(interrupt_pin) |
5568 NISTC_INT_CTRL_INTB_SEL(interrupt_pin),
5569 NISTC_INT_CTRL_REG);
5573 ni_writeb(dev, devpriv->ai_ao_select_reg, NI_E_DMA_AI_AO_SEL_REG);
5574 ni_writeb(dev, devpriv->g0_g1_select_reg, NI_E_DMA_G0_G1_SEL_REG);
5576 if (devpriv->is_6xxx) {
5577 ni_writeb(dev, 0, NI611X_MAGIC_REG);
5578 } else if (devpriv->is_m_series) {
5581 for (channel = 0; channel < board->n_aochan; ++channel) {
5583 NI_M_AO_WAVEFORM_ORDER_REG(channel));
5585 NI_M_AO_REF_ATTENUATION_REG(channel));
5587 ni_writeb(dev, 0x0, NI_M_AO_CALIB_REG);
5593 static void mio_common_detach(struct comedi_device *dev)
5595 struct ni_private *devpriv = dev->private;
5598 ni_gpct_device_destroy(devpriv->counter_dev);