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/pci.h>
45 #include <linux/interrupt.h>
47 #include "../comedidev.h"
49 #include "comedi_fc.h"
52 #define DRIVER_NAME "ni_6527"
54 #define NI6527_DIO_SIZE 4096
55 #define NI6527_MITE_SIZE 4096
57 #define Port_Register(x) (0x00+(x))
58 #define ID_Register 0x06
60 #define Clear_Register 0x07
62 #define ClrOverflow 0x04
63 #define ClrFilter 0x02
64 #define ClrInterval 0x01
66 #define Filter_Interval(x) (0x08+(x))
67 #define Filter_Enable(x) (0x0c+(x))
69 #define Change_Status 0x14
70 #define MasterInterruptStatus 0x04
72 #define EdgeStatus 0x01
74 #define Master_Interrupt_Control 0x15
75 #define FallingEdgeIntEnable 0x10
76 #define RisingEdgeIntEnable 0x08
77 #define MasterInterruptEnable 0x04
78 #define OverflowIntEnable 0x02
79 #define EdgeIntEnable 0x01
81 #define Rising_Edge_Detection_Enable(x) (0x018+(x))
82 #define Falling_Edge_Detection_Enable(x) (0x020+(x))
90 static const struct ni6527_board ni6527_boards[] = {
101 #define this_board ((const struct ni6527_board *)dev->board_ptr)
103 static DEFINE_PCI_DEVICE_TABLE(ni6527_pci_table) = {
104 {PCI_DEVICE(PCI_VENDOR_ID_NI, 0x2b10)},
105 {PCI_DEVICE(PCI_VENDOR_ID_NI, 0x2b20)},
109 MODULE_DEVICE_TABLE(pci, ni6527_pci_table);
111 struct ni6527_private {
112 struct mite_struct *mite;
113 unsigned int filter_interval;
114 unsigned int filter_enable;
117 static int ni6527_di_insn_config(struct comedi_device *dev,
118 struct comedi_subdevice *s,
119 struct comedi_insn *insn, unsigned int *data)
121 struct ni6527_private *devpriv = dev->private;
122 int chan = CR_CHAN(insn->chanspec);
123 unsigned int interval;
128 if (data[0] != INSN_CONFIG_FILTER)
132 interval = (data[1] + 100) / 200;
133 data[1] = interval * 200;
135 if (interval != devpriv->filter_interval) {
136 writeb(interval & 0xff,
137 devpriv->mite->daq_io_addr + Filter_Interval(0));
138 writeb((interval >> 8) & 0xff,
139 devpriv->mite->daq_io_addr + Filter_Interval(1));
140 writeb((interval >> 16) & 0x0f,
141 devpriv->mite->daq_io_addr + Filter_Interval(2));
144 devpriv->mite->daq_io_addr + Clear_Register);
146 devpriv->filter_interval = interval;
149 devpriv->filter_enable |= 1 << chan;
151 devpriv->filter_enable &= ~(1 << chan);
154 writeb(devpriv->filter_enable,
155 devpriv->mite->daq_io_addr + Filter_Enable(0));
156 writeb(devpriv->filter_enable >> 8,
157 devpriv->mite->daq_io_addr + Filter_Enable(1));
158 writeb(devpriv->filter_enable >> 16,
159 devpriv->mite->daq_io_addr + Filter_Enable(2));
164 static int ni6527_di_insn_bits(struct comedi_device *dev,
165 struct comedi_subdevice *s,
166 struct comedi_insn *insn, unsigned int *data)
168 struct ni6527_private *devpriv = dev->private;
170 data[1] = readb(devpriv->mite->daq_io_addr + Port_Register(0));
171 data[1] |= readb(devpriv->mite->daq_io_addr + Port_Register(1)) << 8;
172 data[1] |= readb(devpriv->mite->daq_io_addr + Port_Register(2)) << 16;
177 static int ni6527_do_insn_bits(struct comedi_device *dev,
178 struct comedi_subdevice *s,
179 struct comedi_insn *insn, unsigned int *data)
181 struct ni6527_private *devpriv = dev->private;
184 s->state &= ~data[0];
185 s->state |= (data[0] & data[1]);
187 /* The open relay state on the board cooresponds to 1,
188 * but in Comedi, it is represented by 0. */
189 if (data[0] & 0x0000ff) {
190 writeb((s->state ^ 0xff),
191 devpriv->mite->daq_io_addr + Port_Register(3));
193 if (data[0] & 0x00ff00) {
194 writeb((s->state >> 8) ^ 0xff,
195 devpriv->mite->daq_io_addr + Port_Register(4));
197 if (data[0] & 0xff0000) {
198 writeb((s->state >> 16) ^ 0xff,
199 devpriv->mite->daq_io_addr + Port_Register(5));
207 static irqreturn_t ni6527_interrupt(int irq, void *d)
209 struct comedi_device *dev = d;
210 struct ni6527_private *devpriv = dev->private;
211 struct comedi_subdevice *s = &dev->subdevices[2];
214 status = readb(devpriv->mite->daq_io_addr + Change_Status);
215 if ((status & MasterInterruptStatus) == 0)
217 if ((status & EdgeStatus) == 0)
220 writeb(ClrEdge | ClrOverflow,
221 devpriv->mite->daq_io_addr + Clear_Register);
223 comedi_buf_put(s->async, 0);
224 s->async->events |= COMEDI_CB_EOS;
225 comedi_event(dev, s);
229 static int ni6527_intr_cmdtest(struct comedi_device *dev,
230 struct comedi_subdevice *s,
231 struct comedi_cmd *cmd)
235 /* Step 1 : check if triggers are trivially valid */
237 err |= cfc_check_trigger_src(&cmd->start_src, TRIG_NOW);
238 err |= cfc_check_trigger_src(&cmd->scan_begin_src, TRIG_OTHER);
239 err |= cfc_check_trigger_src(&cmd->convert_src, TRIG_FOLLOW);
240 err |= cfc_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
241 err |= cfc_check_trigger_src(&cmd->stop_src, TRIG_COUNT);
246 /* Step 2a : make sure trigger sources are unique */
247 /* Step 2b : and mutually compatible */
252 /* Step 3: check if arguments are trivially valid */
254 err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0);
255 err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, 0);
256 err |= cfc_check_trigger_arg_is(&cmd->convert_arg, 0);
257 err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, 1);
258 err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0);
263 /* step 4: fix up any arguments */
271 static int ni6527_intr_cmd(struct comedi_device *dev,
272 struct comedi_subdevice *s)
274 struct ni6527_private *devpriv = dev->private;
275 /* struct comedi_cmd *cmd = &s->async->cmd; */
277 writeb(ClrEdge | ClrOverflow,
278 devpriv->mite->daq_io_addr + Clear_Register);
279 writeb(FallingEdgeIntEnable | RisingEdgeIntEnable |
280 MasterInterruptEnable | EdgeIntEnable,
281 devpriv->mite->daq_io_addr + Master_Interrupt_Control);
286 static int ni6527_intr_cancel(struct comedi_device *dev,
287 struct comedi_subdevice *s)
289 struct ni6527_private *devpriv = dev->private;
291 writeb(0x00, devpriv->mite->daq_io_addr + Master_Interrupt_Control);
296 static int ni6527_intr_insn_bits(struct comedi_device *dev,
297 struct comedi_subdevice *s,
298 struct comedi_insn *insn, unsigned int *data)
304 static int ni6527_intr_insn_config(struct comedi_device *dev,
305 struct comedi_subdevice *s,
306 struct comedi_insn *insn, unsigned int *data)
308 struct ni6527_private *devpriv = dev->private;
312 if (data[0] != INSN_CONFIG_CHANGE_NOTIFY)
316 devpriv->mite->daq_io_addr + Rising_Edge_Detection_Enable(0));
318 devpriv->mite->daq_io_addr + Rising_Edge_Detection_Enable(1));
319 writeb(data[1] >> 16,
320 devpriv->mite->daq_io_addr + Rising_Edge_Detection_Enable(2));
323 devpriv->mite->daq_io_addr + Falling_Edge_Detection_Enable(0));
325 devpriv->mite->daq_io_addr + Falling_Edge_Detection_Enable(1));
326 writeb(data[2] >> 16,
327 devpriv->mite->daq_io_addr + Falling_Edge_Detection_Enable(2));
332 static const struct ni6527_board *
333 ni6527_find_boardinfo(struct pci_dev *pcidev)
335 unsigned int dev_id = pcidev->device;
338 for (n = 0; n < ARRAY_SIZE(ni6527_boards); n++) {
339 const struct ni6527_board *board = &ni6527_boards[n];
340 if (board->dev_id == dev_id)
346 static int ni6527_auto_attach(struct comedi_device *dev,
347 unsigned long context_unused)
349 struct pci_dev *pcidev = comedi_to_pci_dev(dev);
350 struct ni6527_private *devpriv;
351 struct comedi_subdevice *s;
354 devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL);
357 dev->private = devpriv;
359 dev->board_ptr = ni6527_find_boardinfo(pcidev);
363 devpriv->mite = mite_alloc(pcidev);
367 ret = mite_setup(devpriv->mite);
369 dev_err(dev->class_dev, "error setting up mite\n");
373 dev->board_name = this_board->name;
374 dev_info(dev->class_dev, "board: %s, ID=0x%02x\n", dev->board_name,
375 readb(devpriv->mite->daq_io_addr + ID_Register));
377 ret = comedi_alloc_subdevices(dev, 3);
381 s = &dev->subdevices[0];
382 s->type = COMEDI_SUBD_DI;
383 s->subdev_flags = SDF_READABLE;
385 s->range_table = &range_digital;
387 s->insn_config = ni6527_di_insn_config;
388 s->insn_bits = ni6527_di_insn_bits;
390 s = &dev->subdevices[1];
391 s->type = COMEDI_SUBD_DO;
392 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
394 s->range_table = &range_unknown; /* FIXME: actually conductance */
396 s->insn_bits = ni6527_do_insn_bits;
398 s = &dev->subdevices[2];
399 dev->read_subdev = s;
400 s->type = COMEDI_SUBD_DI;
401 s->subdev_flags = SDF_READABLE | SDF_CMD_READ;
403 s->range_table = &range_unknown;
405 s->do_cmdtest = ni6527_intr_cmdtest;
406 s->do_cmd = ni6527_intr_cmd;
407 s->cancel = ni6527_intr_cancel;
408 s->insn_bits = ni6527_intr_insn_bits;
409 s->insn_config = ni6527_intr_insn_config;
411 writeb(0x00, devpriv->mite->daq_io_addr + Filter_Enable(0));
412 writeb(0x00, devpriv->mite->daq_io_addr + Filter_Enable(1));
413 writeb(0x00, devpriv->mite->daq_io_addr + Filter_Enable(2));
415 writeb(ClrEdge | ClrOverflow | ClrFilter | ClrInterval,
416 devpriv->mite->daq_io_addr + Clear_Register);
417 writeb(0x00, devpriv->mite->daq_io_addr + Master_Interrupt_Control);
419 ret = request_irq(mite_irq(devpriv->mite), ni6527_interrupt,
420 IRQF_SHARED, DRIVER_NAME, dev);
422 dev_warn(dev->class_dev, "irq not available\n");
424 dev->irq = mite_irq(devpriv->mite);
429 static void ni6527_detach(struct comedi_device *dev)
431 struct ni6527_private *devpriv = dev->private;
433 if (devpriv && devpriv->mite && devpriv->mite->daq_io_addr)
435 devpriv->mite->daq_io_addr + Master_Interrupt_Control);
437 free_irq(dev->irq, dev);
438 if (devpriv && devpriv->mite) {
439 mite_unsetup(devpriv->mite);
440 mite_free(devpriv->mite);
444 static struct comedi_driver ni6527_driver = {
445 .driver_name = DRIVER_NAME,
446 .module = THIS_MODULE,
447 .auto_attach = ni6527_auto_attach,
448 .detach = ni6527_detach,
451 static int ni6527_pci_probe(struct pci_dev *dev,
452 const struct pci_device_id *ent)
454 return comedi_pci_auto_config(dev, &ni6527_driver);
457 static struct pci_driver ni6527_pci_driver = {
459 .id_table = ni6527_pci_table,
460 .probe = ni6527_pci_probe,
461 .remove = comedi_pci_auto_unconfig,
463 module_comedi_pci_driver(ni6527_driver, ni6527_pci_driver);
465 MODULE_AUTHOR("Comedi http://www.comedi.org");
466 MODULE_DESCRIPTION("Comedi low-level driver");
467 MODULE_LICENSE("GPL");