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 "../comedidev.h"
48 #define NI6527_DIO_SIZE 4096
49 #define NI6527_MITE_SIZE 4096
51 #define Port_Register(x) (0x00+(x))
52 #define ID_Register 0x06
54 #define Clear_Register 0x07
56 #define ClrOverflow 0x04
57 #define ClrFilter 0x02
58 #define ClrInterval 0x01
60 #define Filter_Interval(x) (0x08+(x))
61 #define Filter_Enable(x) (0x0c+(x))
63 #define Change_Status 0x14
64 #define MasterInterruptStatus 0x04
66 #define EdgeStatus 0x01
68 #define Master_Interrupt_Control 0x15
69 #define FallingEdgeIntEnable 0x10
70 #define RisingEdgeIntEnable 0x08
71 #define MasterInterruptEnable 0x04
72 #define OverflowIntEnable 0x02
73 #define EdgeIntEnable 0x01
75 #define Rising_Edge_Detection_Enable(x) (0x018+(x))
76 #define Falling_Edge_Detection_Enable(x) (0x020+(x))
78 static int ni6527_attach(struct comedi_device *dev, struct comedi_devconfig *it);
79 static int ni6527_detach(struct comedi_device *dev);
80 static struct comedi_driver driver_ni6527 = {
81 .driver_name = "ni6527",
82 .module = THIS_MODULE,
83 .attach = ni6527_attach,
84 .detach = ni6527_detach,
93 static const struct ni6527_board ni6527_boards[] = {
104 #define n_ni6527_boards (sizeof(ni6527_boards)/sizeof(ni6527_boards[0]))
105 #define this_board ((const struct ni6527_board *)dev->board_ptr)
107 static DEFINE_PCI_DEVICE_TABLE(ni6527_pci_table) = {
108 {PCI_VENDOR_ID_NATINST, 0x2b10, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
109 {PCI_VENDOR_ID_NATINST, 0x2b20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
113 MODULE_DEVICE_TABLE(pci, ni6527_pci_table);
115 struct ni6527_private {
116 struct mite_struct *mite;
117 unsigned int filter_interval;
118 unsigned int filter_enable;
121 #define devpriv ((struct ni6527_private *)dev->private)
123 static int ni6527_find_device(struct comedi_device *dev, int bus, int slot);
125 static int ni6527_di_insn_config(struct comedi_device *dev, struct comedi_subdevice *s,
126 struct comedi_insn *insn, unsigned int *data)
128 int chan = CR_CHAN(insn->chanspec);
129 unsigned int interval;
134 if (data[0] != INSN_CONFIG_FILTER)
138 interval = (data[1] + 100) / 200;
139 data[1] = interval * 200;
141 if (interval != devpriv->filter_interval) {
142 writeb(interval & 0xff,
143 devpriv->mite->daq_io_addr +
145 writeb((interval >> 8) & 0xff,
146 devpriv->mite->daq_io_addr +
148 writeb((interval >> 16) & 0x0f,
149 devpriv->mite->daq_io_addr +
153 devpriv->mite->daq_io_addr + Clear_Register);
155 devpriv->filter_interval = interval;
158 devpriv->filter_enable |= 1 << chan;
160 devpriv->filter_enable &= ~(1 << chan);
163 writeb(devpriv->filter_enable,
164 devpriv->mite->daq_io_addr + Filter_Enable(0));
165 writeb(devpriv->filter_enable >> 8,
166 devpriv->mite->daq_io_addr + Filter_Enable(1));
167 writeb(devpriv->filter_enable >> 16,
168 devpriv->mite->daq_io_addr + Filter_Enable(2));
173 static int ni6527_di_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s,
174 struct comedi_insn *insn, unsigned int *data)
179 data[1] = readb(devpriv->mite->daq_io_addr + Port_Register(0));
180 data[1] |= readb(devpriv->mite->daq_io_addr + Port_Register(1)) << 8;
181 data[1] |= readb(devpriv->mite->daq_io_addr + Port_Register(2)) << 16;
186 static int ni6527_do_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s,
187 struct comedi_insn *insn, unsigned int *data)
192 s->state &= ~data[0];
193 s->state |= (data[0] & data[1]);
195 /* The open relay state on the board cooresponds to 1,
196 * but in Comedi, it is represented by 0. */
197 if (data[0] & 0x0000ff) {
198 writeb((s->state ^ 0xff),
199 devpriv->mite->daq_io_addr + Port_Register(3));
201 if (data[0] & 0x00ff00) {
202 writeb((s->state >> 8) ^ 0xff,
203 devpriv->mite->daq_io_addr + Port_Register(4));
205 if (data[0] & 0xff0000) {
206 writeb((s->state >> 16) ^ 0xff,
207 devpriv->mite->daq_io_addr + Port_Register(5));
215 static irqreturn_t ni6527_interrupt(int irq, void *d)
217 struct comedi_device *dev = d;
218 struct comedi_subdevice *s = dev->subdevices + 2;
221 status = readb(devpriv->mite->daq_io_addr + Change_Status);
222 if ((status & MasterInterruptStatus) == 0)
224 if ((status & EdgeStatus) == 0)
227 writeb(ClrEdge | ClrOverflow,
228 devpriv->mite->daq_io_addr + Clear_Register);
230 comedi_buf_put(s->async, 0);
231 s->async->events |= COMEDI_CB_EOS;
232 comedi_event(dev, s);
236 static int ni6527_intr_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s,
237 struct comedi_cmd *cmd)
242 /* step 1: make sure trigger sources are trivially valid */
244 tmp = cmd->start_src;
245 cmd->start_src &= TRIG_NOW;
246 if (!cmd->start_src || tmp != cmd->start_src)
249 tmp = cmd->scan_begin_src;
250 cmd->scan_begin_src &= TRIG_OTHER;
251 if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src)
254 tmp = cmd->convert_src;
255 cmd->convert_src &= TRIG_FOLLOW;
256 if (!cmd->convert_src || tmp != cmd->convert_src)
259 tmp = cmd->scan_end_src;
260 cmd->scan_end_src &= TRIG_COUNT;
261 if (!cmd->scan_end_src || tmp != cmd->scan_end_src)
265 cmd->stop_src &= TRIG_COUNT;
266 if (!cmd->stop_src || tmp != cmd->stop_src)
272 /* step 2: make sure trigger sources are unique and mutually compatible */
277 /* step 3: make sure arguments are trivially compatible */
279 if (cmd->start_arg != 0) {
283 if (cmd->scan_begin_arg != 0) {
284 cmd->scan_begin_arg = 0;
287 if (cmd->convert_arg != 0) {
288 cmd->convert_arg = 0;
292 if (cmd->scan_end_arg != 1) {
293 cmd->scan_end_arg = 1;
296 if (cmd->stop_arg != 0) {
304 /* step 4: fix up any arguments */
312 static int ni6527_intr_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
314 /* struct comedi_cmd *cmd = &s->async->cmd; */
316 writeb(ClrEdge | ClrOverflow,
317 devpriv->mite->daq_io_addr + Clear_Register);
318 writeb(FallingEdgeIntEnable | RisingEdgeIntEnable |
319 MasterInterruptEnable | EdgeIntEnable,
320 devpriv->mite->daq_io_addr + Master_Interrupt_Control);
325 static int ni6527_intr_cancel(struct comedi_device *dev, struct comedi_subdevice *s)
327 writeb(0x00, devpriv->mite->daq_io_addr + Master_Interrupt_Control);
332 static int ni6527_intr_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s,
333 struct comedi_insn *insn, unsigned int *data)
342 static int ni6527_intr_insn_config(struct comedi_device *dev, struct comedi_subdevice *s,
343 struct comedi_insn *insn, unsigned int *data)
347 if (data[0] != INSN_CONFIG_CHANGE_NOTIFY)
351 devpriv->mite->daq_io_addr + Rising_Edge_Detection_Enable(0));
353 devpriv->mite->daq_io_addr + Rising_Edge_Detection_Enable(1));
354 writeb(data[1] >> 16,
355 devpriv->mite->daq_io_addr + Rising_Edge_Detection_Enable(2));
358 devpriv->mite->daq_io_addr + Falling_Edge_Detection_Enable(0));
360 devpriv->mite->daq_io_addr + Falling_Edge_Detection_Enable(1));
361 writeb(data[2] >> 16,
362 devpriv->mite->daq_io_addr + Falling_Edge_Detection_Enable(2));
367 static int ni6527_attach(struct comedi_device *dev, struct comedi_devconfig *it)
369 struct comedi_subdevice *s;
372 printk("comedi%d: ni6527:", dev->minor);
374 ret = alloc_private(dev, sizeof(struct ni6527_private));
378 ret = ni6527_find_device(dev, it->options[0], it->options[1]);
382 ret = mite_setup(devpriv->mite);
384 printk("error setting up mite\n");
388 dev->board_name = this_board->name;
389 printk(" %s", dev->board_name);
391 printk(" ID=0x%02x", readb(devpriv->mite->daq_io_addr + ID_Register));
393 ret = alloc_subdevices(dev, 3);
397 s = dev->subdevices + 0;
398 s->type = COMEDI_SUBD_DI;
399 s->subdev_flags = SDF_READABLE;
401 s->range_table = &range_digital;
403 s->insn_config = ni6527_di_insn_config;
404 s->insn_bits = ni6527_di_insn_bits;
406 s = dev->subdevices + 1;
407 s->type = COMEDI_SUBD_DO;
408 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
410 s->range_table = &range_unknown; /* FIXME: actually conductance */
412 s->insn_bits = ni6527_do_insn_bits;
414 s = dev->subdevices + 2;
415 dev->read_subdev = s;
416 s->type = COMEDI_SUBD_DI;
417 s->subdev_flags = SDF_READABLE | SDF_CMD_READ;
419 s->range_table = &range_unknown;
421 s->do_cmdtest = ni6527_intr_cmdtest;
422 s->do_cmd = ni6527_intr_cmd;
423 s->cancel = ni6527_intr_cancel;
424 s->insn_bits = ni6527_intr_insn_bits;
425 s->insn_config = ni6527_intr_insn_config;
427 writeb(0x00, devpriv->mite->daq_io_addr + Filter_Enable(0));
428 writeb(0x00, devpriv->mite->daq_io_addr + Filter_Enable(1));
429 writeb(0x00, devpriv->mite->daq_io_addr + Filter_Enable(2));
431 writeb(ClrEdge | ClrOverflow | ClrFilter | ClrInterval,
432 devpriv->mite->daq_io_addr + Clear_Register);
433 writeb(0x00, devpriv->mite->daq_io_addr + Master_Interrupt_Control);
435 ret = comedi_request_irq(mite_irq(devpriv->mite), ni6527_interrupt,
436 IRQF_SHARED, "ni6527", dev);
438 printk(" irq not available");
440 dev->irq = mite_irq(devpriv->mite);
447 static int ni6527_detach(struct comedi_device *dev)
449 if (devpriv && devpriv->mite && devpriv->mite->daq_io_addr) {
451 devpriv->mite->daq_io_addr + Master_Interrupt_Control);
455 comedi_free_irq(dev->irq, dev);
458 if (devpriv && devpriv->mite) {
459 mite_unsetup(devpriv->mite);
465 static int ni6527_find_device(struct comedi_device *dev, int bus, int slot)
467 struct mite_struct *mite;
470 for (mite = mite_devices; mite; mite = mite->next) {
474 if (bus != mite->pcidev->bus->number ||
475 slot != PCI_SLOT(mite->pcidev->devfn))
478 for (i = 0; i < n_ni6527_boards; i++) {
479 if (mite_device_id(mite) == ni6527_boards[i].dev_id) {
480 dev->board_ptr = ni6527_boards + i;
481 devpriv->mite = mite;
486 printk("no device found\n");
491 COMEDI_PCI_INITCLEANUP(driver_ni6527, ni6527_pci_table);