2 comedi/drivers/ni_6527.c
3 driver for National Instruments PCI-6527
5 COMEDI - Linux Control and Measurement Device Interface
6 Copyright (C) 1999,2002,2003 David A. Schleef <ds@schleef.org>
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.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 Description: National Instruments 6527
28 Devices: [National Instruments] PCI-6527 (ni6527), PXI-6527
29 Updated: Sat, 25 Jan 2003 13:24:40 -0800
35 Manuals (available from ftp://ftp.natinst.com/support/manuals)
37 370106b.pdf 6527 Register Level Programmer Manual
44 #include <linux/interrupt.h>
45 #include "../comedidev.h"
49 #define NI6527_DIO_SIZE 4096
50 #define NI6527_MITE_SIZE 4096
52 #define Port_Register(x) (0x00+(x))
53 #define ID_Register 0x06
55 #define Clear_Register 0x07
57 #define ClrOverflow 0x04
58 #define ClrFilter 0x02
59 #define ClrInterval 0x01
61 #define Filter_Interval(x) (0x08+(x))
62 #define Filter_Enable(x) (0x0c+(x))
64 #define Change_Status 0x14
65 #define MasterInterruptStatus 0x04
67 #define EdgeStatus 0x01
69 #define Master_Interrupt_Control 0x15
70 #define FallingEdgeIntEnable 0x10
71 #define RisingEdgeIntEnable 0x08
72 #define MasterInterruptEnable 0x04
73 #define OverflowIntEnable 0x02
74 #define EdgeIntEnable 0x01
76 #define Rising_Edge_Detection_Enable(x) (0x018+(x))
77 #define Falling_Edge_Detection_Enable(x) (0x020+(x))
79 static int ni6527_attach(struct comedi_device *dev,
80 struct comedi_devconfig *it);
81 static int ni6527_detach(struct comedi_device *dev);
82 static struct comedi_driver driver_ni6527 = {
83 .driver_name = "ni6527",
84 .module = THIS_MODULE,
85 .attach = ni6527_attach,
86 .detach = ni6527_detach,
95 static const struct ni6527_board ni6527_boards[] = {
106 #define n_ni6527_boards ARRAY_SIZE(ni6527_boards)
107 #define this_board ((const struct ni6527_board *)dev->board_ptr)
109 static DEFINE_PCI_DEVICE_TABLE(ni6527_pci_table) = {
111 PCI_VENDOR_ID_NATINST, 0x2b10, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, {
112 PCI_VENDOR_ID_NATINST, 0x2b20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, {
116 MODULE_DEVICE_TABLE(pci, ni6527_pci_table);
118 struct ni6527_private {
119 struct mite_struct *mite;
120 unsigned int filter_interval;
121 unsigned int filter_enable;
124 #define devpriv ((struct ni6527_private *)dev->private)
126 static int ni6527_find_device(struct comedi_device *dev, int bus, int slot);
128 static int ni6527_di_insn_config(struct comedi_device *dev,
129 struct comedi_subdevice *s,
130 struct comedi_insn *insn, unsigned int *data)
132 int chan = CR_CHAN(insn->chanspec);
133 unsigned int interval;
138 if (data[0] != INSN_CONFIG_FILTER)
142 interval = (data[1] + 100) / 200;
143 data[1] = interval * 200;
145 if (interval != devpriv->filter_interval) {
146 writeb(interval & 0xff,
147 devpriv->mite->daq_io_addr + Filter_Interval(0));
148 writeb((interval >> 8) & 0xff,
149 devpriv->mite->daq_io_addr + Filter_Interval(1));
150 writeb((interval >> 16) & 0x0f,
151 devpriv->mite->daq_io_addr + Filter_Interval(2));
154 devpriv->mite->daq_io_addr + Clear_Register);
156 devpriv->filter_interval = interval;
159 devpriv->filter_enable |= 1 << chan;
161 devpriv->filter_enable &= ~(1 << chan);
164 writeb(devpriv->filter_enable,
165 devpriv->mite->daq_io_addr + Filter_Enable(0));
166 writeb(devpriv->filter_enable >> 8,
167 devpriv->mite->daq_io_addr + Filter_Enable(1));
168 writeb(devpriv->filter_enable >> 16,
169 devpriv->mite->daq_io_addr + Filter_Enable(2));
174 static int ni6527_di_insn_bits(struct comedi_device *dev,
175 struct comedi_subdevice *s,
176 struct comedi_insn *insn, unsigned int *data)
181 data[1] = readb(devpriv->mite->daq_io_addr + Port_Register(0));
182 data[1] |= readb(devpriv->mite->daq_io_addr + Port_Register(1)) << 8;
183 data[1] |= readb(devpriv->mite->daq_io_addr + Port_Register(2)) << 16;
188 static int ni6527_do_insn_bits(struct comedi_device *dev,
189 struct comedi_subdevice *s,
190 struct comedi_insn *insn, unsigned int *data)
195 s->state &= ~data[0];
196 s->state |= (data[0] & data[1]);
198 /* The open relay state on the board cooresponds to 1,
199 * but in Comedi, it is represented by 0. */
200 if (data[0] & 0x0000ff) {
201 writeb((s->state ^ 0xff),
202 devpriv->mite->daq_io_addr + Port_Register(3));
204 if (data[0] & 0x00ff00) {
205 writeb((s->state >> 8) ^ 0xff,
206 devpriv->mite->daq_io_addr + Port_Register(4));
208 if (data[0] & 0xff0000) {
209 writeb((s->state >> 16) ^ 0xff,
210 devpriv->mite->daq_io_addr + Port_Register(5));
218 static irqreturn_t ni6527_interrupt(int irq, void *d)
220 struct comedi_device *dev = d;
221 struct comedi_subdevice *s = dev->subdevices + 2;
224 status = readb(devpriv->mite->daq_io_addr + Change_Status);
225 if ((status & MasterInterruptStatus) == 0)
227 if ((status & EdgeStatus) == 0)
230 writeb(ClrEdge | ClrOverflow,
231 devpriv->mite->daq_io_addr + Clear_Register);
233 comedi_buf_put(s->async, 0);
234 s->async->events |= COMEDI_CB_EOS;
235 comedi_event(dev, s);
239 static int ni6527_intr_cmdtest(struct comedi_device *dev,
240 struct comedi_subdevice *s,
241 struct comedi_cmd *cmd)
246 /* step 1: make sure trigger sources are trivially valid */
248 tmp = cmd->start_src;
249 cmd->start_src &= TRIG_NOW;
250 if (!cmd->start_src || tmp != cmd->start_src)
253 tmp = cmd->scan_begin_src;
254 cmd->scan_begin_src &= TRIG_OTHER;
255 if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src)
258 tmp = cmd->convert_src;
259 cmd->convert_src &= TRIG_FOLLOW;
260 if (!cmd->convert_src || tmp != cmd->convert_src)
263 tmp = cmd->scan_end_src;
264 cmd->scan_end_src &= TRIG_COUNT;
265 if (!cmd->scan_end_src || tmp != cmd->scan_end_src)
269 cmd->stop_src &= TRIG_COUNT;
270 if (!cmd->stop_src || tmp != cmd->stop_src)
276 /* step 2: make sure trigger sources are unique and */
277 /* are mutually compatible */
282 /* step 3: make sure arguments are trivially compatible */
284 if (cmd->start_arg != 0) {
288 if (cmd->scan_begin_arg != 0) {
289 cmd->scan_begin_arg = 0;
292 if (cmd->convert_arg != 0) {
293 cmd->convert_arg = 0;
297 if (cmd->scan_end_arg != 1) {
298 cmd->scan_end_arg = 1;
301 if (cmd->stop_arg != 0) {
309 /* step 4: fix up any arguments */
317 static int ni6527_intr_cmd(struct comedi_device *dev,
318 struct comedi_subdevice *s)
320 /* struct comedi_cmd *cmd = &s->async->cmd; */
322 writeb(ClrEdge | ClrOverflow,
323 devpriv->mite->daq_io_addr + Clear_Register);
324 writeb(FallingEdgeIntEnable | RisingEdgeIntEnable |
325 MasterInterruptEnable | EdgeIntEnable,
326 devpriv->mite->daq_io_addr + Master_Interrupt_Control);
331 static int ni6527_intr_cancel(struct comedi_device *dev,
332 struct comedi_subdevice *s)
334 writeb(0x00, devpriv->mite->daq_io_addr + Master_Interrupt_Control);
339 static int ni6527_intr_insn_bits(struct comedi_device *dev,
340 struct comedi_subdevice *s,
341 struct comedi_insn *insn, unsigned int *data)
350 static int ni6527_intr_insn_config(struct comedi_device *dev,
351 struct comedi_subdevice *s,
352 struct comedi_insn *insn, unsigned int *data)
356 if (data[0] != INSN_CONFIG_CHANGE_NOTIFY)
360 devpriv->mite->daq_io_addr + Rising_Edge_Detection_Enable(0));
362 devpriv->mite->daq_io_addr + Rising_Edge_Detection_Enable(1));
363 writeb(data[1] >> 16,
364 devpriv->mite->daq_io_addr + Rising_Edge_Detection_Enable(2));
367 devpriv->mite->daq_io_addr + Falling_Edge_Detection_Enable(0));
369 devpriv->mite->daq_io_addr + Falling_Edge_Detection_Enable(1));
370 writeb(data[2] >> 16,
371 devpriv->mite->daq_io_addr + Falling_Edge_Detection_Enable(2));
376 static int ni6527_attach(struct comedi_device *dev, struct comedi_devconfig *it)
378 struct comedi_subdevice *s;
381 printk(KERN_INFO "comedi%d: ni6527\n", dev->minor);
383 ret = alloc_private(dev, sizeof(struct ni6527_private));
387 ret = ni6527_find_device(dev, it->options[0], it->options[1]);
391 ret = mite_setup(devpriv->mite);
393 printk(KERN_ERR "comedi: error setting up mite\n");
397 dev->board_name = this_board->name;
398 printk(KERN_INFO "comedi board: %s, ID=0x%02x\n", dev->board_name,
399 readb(devpriv->mite->daq_io_addr + ID_Register));
401 ret = alloc_subdevices(dev, 3);
405 s = dev->subdevices + 0;
406 s->type = COMEDI_SUBD_DI;
407 s->subdev_flags = SDF_READABLE;
409 s->range_table = &range_digital;
411 s->insn_config = ni6527_di_insn_config;
412 s->insn_bits = ni6527_di_insn_bits;
414 s = dev->subdevices + 1;
415 s->type = COMEDI_SUBD_DO;
416 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
418 s->range_table = &range_unknown; /* FIXME: actually conductance */
420 s->insn_bits = ni6527_do_insn_bits;
422 s = dev->subdevices + 2;
423 dev->read_subdev = s;
424 s->type = COMEDI_SUBD_DI;
425 s->subdev_flags = SDF_READABLE | SDF_CMD_READ;
427 s->range_table = &range_unknown;
429 s->do_cmdtest = ni6527_intr_cmdtest;
430 s->do_cmd = ni6527_intr_cmd;
431 s->cancel = ni6527_intr_cancel;
432 s->insn_bits = ni6527_intr_insn_bits;
433 s->insn_config = ni6527_intr_insn_config;
435 writeb(0x00, devpriv->mite->daq_io_addr + Filter_Enable(0));
436 writeb(0x00, devpriv->mite->daq_io_addr + Filter_Enable(1));
437 writeb(0x00, devpriv->mite->daq_io_addr + Filter_Enable(2));
439 writeb(ClrEdge | ClrOverflow | ClrFilter | ClrInterval,
440 devpriv->mite->daq_io_addr + Clear_Register);
441 writeb(0x00, devpriv->mite->daq_io_addr + Master_Interrupt_Control);
443 ret = request_irq(mite_irq(devpriv->mite), ni6527_interrupt,
444 IRQF_SHARED, "ni6527", dev);
446 printk(KERN_WARNING "comedi i6527 irq not available\n");
448 dev->irq = mite_irq(devpriv->mite);
453 static int ni6527_detach(struct comedi_device *dev)
455 if (devpriv && devpriv->mite && devpriv->mite->daq_io_addr)
457 devpriv->mite->daq_io_addr + Master_Interrupt_Control);
460 free_irq(dev->irq, dev);
462 if (devpriv && devpriv->mite)
463 mite_unsetup(devpriv->mite);
468 static int ni6527_find_device(struct comedi_device *dev, int bus, int slot)
470 struct mite_struct *mite;
473 for (mite = mite_devices; mite; mite = mite->next) {
477 if (bus != mite->pcidev->bus->number ||
478 slot != PCI_SLOT(mite->pcidev->devfn))
481 for (i = 0; i < n_ni6527_boards; i++) {
482 if (mite_device_id(mite) == ni6527_boards[i].dev_id) {
483 dev->board_ptr = ni6527_boards + i;
484 devpriv->mite = mite;
489 printk(KERN_ERR "comedi 6527: no device found\n");
494 COMEDI_PCI_INITCLEANUP(driver_ni6527, ni6527_pci_table);