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"
47 #include "comedi_fc.h"
50 #define DRIVER_NAME "ni_6527"
52 #define NI6527_DIO_SIZE 4096
53 #define NI6527_MITE_SIZE 4096
55 #define Port_Register(x) (0x00+(x))
56 #define ID_Register 0x06
58 #define Clear_Register 0x07
60 #define ClrOverflow 0x04
61 #define ClrFilter 0x02
62 #define ClrInterval 0x01
64 #define Filter_Interval(x) (0x08+(x))
65 #define Filter_Enable(x) (0x0c+(x))
67 #define Change_Status 0x14
68 #define MasterInterruptStatus 0x04
70 #define EdgeStatus 0x01
72 #define Master_Interrupt_Control 0x15
73 #define FallingEdgeIntEnable 0x10
74 #define RisingEdgeIntEnable 0x08
75 #define MasterInterruptEnable 0x04
76 #define OverflowIntEnable 0x02
77 #define EdgeIntEnable 0x01
79 #define Rising_Edge_Detection_Enable(x) (0x018+(x))
80 #define Falling_Edge_Detection_Enable(x) (0x020+(x))
88 static const struct ni6527_board ni6527_boards
[] = {
99 #define this_board ((const struct ni6527_board *)dev->board_ptr)
101 static DEFINE_PCI_DEVICE_TABLE(ni6527_pci_table
) = {
102 {PCI_DEVICE(PCI_VENDOR_ID_NI
, 0x2b10)},
103 {PCI_DEVICE(PCI_VENDOR_ID_NI
, 0x2b20)},
107 MODULE_DEVICE_TABLE(pci
, ni6527_pci_table
);
109 struct ni6527_private
{
110 struct mite_struct
*mite
;
111 unsigned int filter_interval
;
112 unsigned int filter_enable
;
115 #define devpriv ((struct ni6527_private *)dev->private)
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 int chan
= CR_CHAN(insn
->chanspec
);
122 unsigned int interval
;
127 if (data
[0] != INSN_CONFIG_FILTER
)
131 interval
= (data
[1] + 100) / 200;
132 data
[1] = interval
* 200;
134 if (interval
!= devpriv
->filter_interval
) {
135 writeb(interval
& 0xff,
136 devpriv
->mite
->daq_io_addr
+ Filter_Interval(0));
137 writeb((interval
>> 8) & 0xff,
138 devpriv
->mite
->daq_io_addr
+ Filter_Interval(1));
139 writeb((interval
>> 16) & 0x0f,
140 devpriv
->mite
->daq_io_addr
+ Filter_Interval(2));
143 devpriv
->mite
->daq_io_addr
+ Clear_Register
);
145 devpriv
->filter_interval
= interval
;
148 devpriv
->filter_enable
|= 1 << chan
;
150 devpriv
->filter_enable
&= ~(1 << chan
);
153 writeb(devpriv
->filter_enable
,
154 devpriv
->mite
->daq_io_addr
+ Filter_Enable(0));
155 writeb(devpriv
->filter_enable
>> 8,
156 devpriv
->mite
->daq_io_addr
+ Filter_Enable(1));
157 writeb(devpriv
->filter_enable
>> 16,
158 devpriv
->mite
->daq_io_addr
+ Filter_Enable(2));
163 static int ni6527_di_insn_bits(struct comedi_device
*dev
,
164 struct comedi_subdevice
*s
,
165 struct comedi_insn
*insn
, unsigned int *data
)
167 data
[1] = readb(devpriv
->mite
->daq_io_addr
+ Port_Register(0));
168 data
[1] |= readb(devpriv
->mite
->daq_io_addr
+ Port_Register(1)) << 8;
169 data
[1] |= readb(devpriv
->mite
->daq_io_addr
+ Port_Register(2)) << 16;
174 static int ni6527_do_insn_bits(struct comedi_device
*dev
,
175 struct comedi_subdevice
*s
,
176 struct comedi_insn
*insn
, unsigned int *data
)
179 s
->state
&= ~data
[0];
180 s
->state
|= (data
[0] & data
[1]);
182 /* The open relay state on the board cooresponds to 1,
183 * but in Comedi, it is represented by 0. */
184 if (data
[0] & 0x0000ff) {
185 writeb((s
->state
^ 0xff),
186 devpriv
->mite
->daq_io_addr
+ Port_Register(3));
188 if (data
[0] & 0x00ff00) {
189 writeb((s
->state
>> 8) ^ 0xff,
190 devpriv
->mite
->daq_io_addr
+ Port_Register(4));
192 if (data
[0] & 0xff0000) {
193 writeb((s
->state
>> 16) ^ 0xff,
194 devpriv
->mite
->daq_io_addr
+ Port_Register(5));
202 static irqreturn_t
ni6527_interrupt(int irq
, void *d
)
204 struct comedi_device
*dev
= d
;
205 struct comedi_subdevice
*s
= &dev
->subdevices
[2];
208 status
= readb(devpriv
->mite
->daq_io_addr
+ Change_Status
);
209 if ((status
& MasterInterruptStatus
) == 0)
211 if ((status
& EdgeStatus
) == 0)
214 writeb(ClrEdge
| ClrOverflow
,
215 devpriv
->mite
->daq_io_addr
+ Clear_Register
);
217 comedi_buf_put(s
->async
, 0);
218 s
->async
->events
|= COMEDI_CB_EOS
;
219 comedi_event(dev
, s
);
223 static int ni6527_intr_cmdtest(struct comedi_device
*dev
,
224 struct comedi_subdevice
*s
,
225 struct comedi_cmd
*cmd
)
229 /* Step 1 : check if triggers are trivially valid */
231 err
|= cfc_check_trigger_src(&cmd
->start_src
, TRIG_NOW
);
232 err
|= cfc_check_trigger_src(&cmd
->scan_begin_src
, TRIG_OTHER
);
233 err
|= cfc_check_trigger_src(&cmd
->convert_src
, TRIG_FOLLOW
);
234 err
|= cfc_check_trigger_src(&cmd
->scan_end_src
, TRIG_COUNT
);
235 err
|= cfc_check_trigger_src(&cmd
->stop_src
, TRIG_COUNT
);
240 /* Step 2a : make sure trigger sources are unique */
241 /* Step 2b : and mutually compatible */
246 /* step 3: make sure arguments are trivially compatible */
248 if (cmd
->start_arg
!= 0) {
252 if (cmd
->scan_begin_arg
!= 0) {
253 cmd
->scan_begin_arg
= 0;
256 if (cmd
->convert_arg
!= 0) {
257 cmd
->convert_arg
= 0;
261 if (cmd
->scan_end_arg
!= 1) {
262 cmd
->scan_end_arg
= 1;
265 if (cmd
->stop_arg
!= 0) {
273 /* step 4: fix up any arguments */
281 static int ni6527_intr_cmd(struct comedi_device
*dev
,
282 struct comedi_subdevice
*s
)
284 /* struct comedi_cmd *cmd = &s->async->cmd; */
286 writeb(ClrEdge
| ClrOverflow
,
287 devpriv
->mite
->daq_io_addr
+ Clear_Register
);
288 writeb(FallingEdgeIntEnable
| RisingEdgeIntEnable
|
289 MasterInterruptEnable
| EdgeIntEnable
,
290 devpriv
->mite
->daq_io_addr
+ Master_Interrupt_Control
);
295 static int ni6527_intr_cancel(struct comedi_device
*dev
,
296 struct comedi_subdevice
*s
)
298 writeb(0x00, devpriv
->mite
->daq_io_addr
+ Master_Interrupt_Control
);
303 static int ni6527_intr_insn_bits(struct comedi_device
*dev
,
304 struct comedi_subdevice
*s
,
305 struct comedi_insn
*insn
, unsigned int *data
)
311 static int ni6527_intr_insn_config(struct comedi_device
*dev
,
312 struct comedi_subdevice
*s
,
313 struct comedi_insn
*insn
, unsigned int *data
)
317 if (data
[0] != INSN_CONFIG_CHANGE_NOTIFY
)
321 devpriv
->mite
->daq_io_addr
+ Rising_Edge_Detection_Enable(0));
323 devpriv
->mite
->daq_io_addr
+ Rising_Edge_Detection_Enable(1));
324 writeb(data
[1] >> 16,
325 devpriv
->mite
->daq_io_addr
+ Rising_Edge_Detection_Enable(2));
328 devpriv
->mite
->daq_io_addr
+ Falling_Edge_Detection_Enable(0));
330 devpriv
->mite
->daq_io_addr
+ Falling_Edge_Detection_Enable(1));
331 writeb(data
[2] >> 16,
332 devpriv
->mite
->daq_io_addr
+ Falling_Edge_Detection_Enable(2));
337 static const struct ni6527_board
*
338 ni6527_find_boardinfo(struct pci_dev
*pcidev
)
340 unsigned int dev_id
= pcidev
->device
;
343 for (n
= 0; n
< ARRAY_SIZE(ni6527_boards
); n
++) {
344 const struct ni6527_board
*board
= &ni6527_boards
[n
];
345 if (board
->dev_id
== dev_id
)
351 static int __devinit
ni6527_attach_pci(struct comedi_device
*dev
,
352 struct pci_dev
*pcidev
)
354 struct comedi_subdevice
*s
;
357 ret
= alloc_private(dev
, sizeof(struct ni6527_private
));
361 dev
->board_ptr
= ni6527_find_boardinfo(pcidev
);
365 devpriv
->mite
= mite_alloc(pcidev
);
369 ret
= mite_setup(devpriv
->mite
);
371 dev_err(dev
->class_dev
, "error setting up mite\n");
375 dev
->board_name
= this_board
->name
;
376 dev_info(dev
->class_dev
, "board: %s, ID=0x%02x\n", dev
->board_name
,
377 readb(devpriv
->mite
->daq_io_addr
+ ID_Register
));
379 ret
= comedi_alloc_subdevices(dev
, 3);
383 s
= &dev
->subdevices
[0];
384 s
->type
= COMEDI_SUBD_DI
;
385 s
->subdev_flags
= SDF_READABLE
;
387 s
->range_table
= &range_digital
;
389 s
->insn_config
= ni6527_di_insn_config
;
390 s
->insn_bits
= ni6527_di_insn_bits
;
392 s
= &dev
->subdevices
[1];
393 s
->type
= COMEDI_SUBD_DO
;
394 s
->subdev_flags
= SDF_READABLE
| SDF_WRITABLE
;
396 s
->range_table
= &range_unknown
; /* FIXME: actually conductance */
398 s
->insn_bits
= ni6527_do_insn_bits
;
400 s
= &dev
->subdevices
[2];
401 dev
->read_subdev
= s
;
402 s
->type
= COMEDI_SUBD_DI
;
403 s
->subdev_flags
= SDF_READABLE
| SDF_CMD_READ
;
405 s
->range_table
= &range_unknown
;
407 s
->do_cmdtest
= ni6527_intr_cmdtest
;
408 s
->do_cmd
= ni6527_intr_cmd
;
409 s
->cancel
= ni6527_intr_cancel
;
410 s
->insn_bits
= ni6527_intr_insn_bits
;
411 s
->insn_config
= ni6527_intr_insn_config
;
413 writeb(0x00, devpriv
->mite
->daq_io_addr
+ Filter_Enable(0));
414 writeb(0x00, devpriv
->mite
->daq_io_addr
+ Filter_Enable(1));
415 writeb(0x00, devpriv
->mite
->daq_io_addr
+ Filter_Enable(2));
417 writeb(ClrEdge
| ClrOverflow
| ClrFilter
| ClrInterval
,
418 devpriv
->mite
->daq_io_addr
+ Clear_Register
);
419 writeb(0x00, devpriv
->mite
->daq_io_addr
+ Master_Interrupt_Control
);
421 ret
= request_irq(mite_irq(devpriv
->mite
), ni6527_interrupt
,
422 IRQF_SHARED
, DRIVER_NAME
, dev
);
424 dev_warn(dev
->class_dev
, "irq not available\n");
426 dev
->irq
= mite_irq(devpriv
->mite
);
431 static void ni6527_detach(struct comedi_device
*dev
)
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 .attach_pci
= ni6527_attach_pci
,
448 .detach
= ni6527_detach
,
451 static int __devinit
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 void __devexit
ni6527_pci_remove(struct pci_dev
*dev
)
459 comedi_pci_auto_unconfig(dev
);
462 static struct pci_driver ni6527_pci_driver
= {
464 .id_table
= ni6527_pci_table
,
465 .probe
= ni6527_pci_probe
,
466 .remove
= __devexit_p(ni6527_pci_remove
)
468 module_comedi_pci_driver(ni6527_driver
, ni6527_pci_driver
);
470 MODULE_AUTHOR("Comedi http://www.comedi.org");
471 MODULE_DESCRIPTION("Comedi low-level driver");
472 MODULE_LICENSE("GPL");