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 void 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
) = {
110 {PCI_DEVICE(PCI_VENDOR_ID_NI
, 0x2b10)},
111 {PCI_DEVICE(PCI_VENDOR_ID_NI
, 0x2b20)},
115 MODULE_DEVICE_TABLE(pci
, ni6527_pci_table
);
117 struct ni6527_private
{
118 struct mite_struct
*mite
;
119 unsigned int filter_interval
;
120 unsigned int filter_enable
;
123 #define devpriv ((struct ni6527_private *)dev->private)
125 static int ni6527_find_device(struct comedi_device
*dev
, int bus
, int slot
);
127 static int ni6527_di_insn_config(struct comedi_device
*dev
,
128 struct comedi_subdevice
*s
,
129 struct comedi_insn
*insn
, unsigned int *data
)
131 int chan
= CR_CHAN(insn
->chanspec
);
132 unsigned int interval
;
137 if (data
[0] != INSN_CONFIG_FILTER
)
141 interval
= (data
[1] + 100) / 200;
142 data
[1] = interval
* 200;
144 if (interval
!= devpriv
->filter_interval
) {
145 writeb(interval
& 0xff,
146 devpriv
->mite
->daq_io_addr
+ Filter_Interval(0));
147 writeb((interval
>> 8) & 0xff,
148 devpriv
->mite
->daq_io_addr
+ Filter_Interval(1));
149 writeb((interval
>> 16) & 0x0f,
150 devpriv
->mite
->daq_io_addr
+ Filter_Interval(2));
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
,
174 struct comedi_subdevice
*s
,
175 struct comedi_insn
*insn
, unsigned int *data
)
177 data
[1] = readb(devpriv
->mite
->daq_io_addr
+ Port_Register(0));
178 data
[1] |= readb(devpriv
->mite
->daq_io_addr
+ Port_Register(1)) << 8;
179 data
[1] |= readb(devpriv
->mite
->daq_io_addr
+ Port_Register(2)) << 16;
184 static int ni6527_do_insn_bits(struct comedi_device
*dev
,
185 struct comedi_subdevice
*s
,
186 struct comedi_insn
*insn
, unsigned int *data
)
189 s
->state
&= ~data
[0];
190 s
->state
|= (data
[0] & data
[1]);
192 /* The open relay state on the board cooresponds to 1,
193 * but in Comedi, it is represented by 0. */
194 if (data
[0] & 0x0000ff) {
195 writeb((s
->state
^ 0xff),
196 devpriv
->mite
->daq_io_addr
+ Port_Register(3));
198 if (data
[0] & 0x00ff00) {
199 writeb((s
->state
>> 8) ^ 0xff,
200 devpriv
->mite
->daq_io_addr
+ Port_Register(4));
202 if (data
[0] & 0xff0000) {
203 writeb((s
->state
>> 16) ^ 0xff,
204 devpriv
->mite
->daq_io_addr
+ Port_Register(5));
212 static irqreturn_t
ni6527_interrupt(int irq
, void *d
)
214 struct comedi_device
*dev
= d
;
215 struct comedi_subdevice
*s
= dev
->subdevices
+ 2;
218 status
= readb(devpriv
->mite
->daq_io_addr
+ Change_Status
);
219 if ((status
& MasterInterruptStatus
) == 0)
221 if ((status
& EdgeStatus
) == 0)
224 writeb(ClrEdge
| ClrOverflow
,
225 devpriv
->mite
->daq_io_addr
+ Clear_Register
);
227 comedi_buf_put(s
->async
, 0);
228 s
->async
->events
|= COMEDI_CB_EOS
;
229 comedi_event(dev
, s
);
233 static int ni6527_intr_cmdtest(struct comedi_device
*dev
,
234 struct comedi_subdevice
*s
,
235 struct comedi_cmd
*cmd
)
240 /* step 1: make sure trigger sources are trivially valid */
242 tmp
= cmd
->start_src
;
243 cmd
->start_src
&= TRIG_NOW
;
244 if (!cmd
->start_src
|| tmp
!= cmd
->start_src
)
247 tmp
= cmd
->scan_begin_src
;
248 cmd
->scan_begin_src
&= TRIG_OTHER
;
249 if (!cmd
->scan_begin_src
|| tmp
!= cmd
->scan_begin_src
)
252 tmp
= cmd
->convert_src
;
253 cmd
->convert_src
&= TRIG_FOLLOW
;
254 if (!cmd
->convert_src
|| tmp
!= cmd
->convert_src
)
257 tmp
= cmd
->scan_end_src
;
258 cmd
->scan_end_src
&= TRIG_COUNT
;
259 if (!cmd
->scan_end_src
|| tmp
!= cmd
->scan_end_src
)
263 cmd
->stop_src
&= TRIG_COUNT
;
264 if (!cmd
->stop_src
|| tmp
!= cmd
->stop_src
)
270 /* step 2: make sure trigger sources are unique and */
271 /* are mutually compatible */
276 /* step 3: make sure arguments are trivially compatible */
278 if (cmd
->start_arg
!= 0) {
282 if (cmd
->scan_begin_arg
!= 0) {
283 cmd
->scan_begin_arg
= 0;
286 if (cmd
->convert_arg
!= 0) {
287 cmd
->convert_arg
= 0;
291 if (cmd
->scan_end_arg
!= 1) {
292 cmd
->scan_end_arg
= 1;
295 if (cmd
->stop_arg
!= 0) {
303 /* step 4: fix up any arguments */
311 static int ni6527_intr_cmd(struct comedi_device
*dev
,
312 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
,
326 struct comedi_subdevice
*s
)
328 writeb(0x00, devpriv
->mite
->daq_io_addr
+ Master_Interrupt_Control
);
333 static int ni6527_intr_insn_bits(struct comedi_device
*dev
,
334 struct comedi_subdevice
*s
,
335 struct comedi_insn
*insn
, unsigned int *data
)
341 static int ni6527_intr_insn_config(struct comedi_device
*dev
,
342 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(KERN_INFO
"comedi%d: ni6527\n", 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(KERN_ERR
"comedi: error setting up mite\n");
388 dev
->board_name
= this_board
->name
;
389 printk(KERN_INFO
"comedi board: %s, ID=0x%02x\n", dev
->board_name
,
390 readb(devpriv
->mite
->daq_io_addr
+ ID_Register
));
392 ret
= comedi_alloc_subdevices(dev
, 3);
396 s
= dev
->subdevices
+ 0;
397 s
->type
= COMEDI_SUBD_DI
;
398 s
->subdev_flags
= SDF_READABLE
;
400 s
->range_table
= &range_digital
;
402 s
->insn_config
= ni6527_di_insn_config
;
403 s
->insn_bits
= ni6527_di_insn_bits
;
405 s
= dev
->subdevices
+ 1;
406 s
->type
= COMEDI_SUBD_DO
;
407 s
->subdev_flags
= SDF_READABLE
| SDF_WRITABLE
;
409 s
->range_table
= &range_unknown
; /* FIXME: actually conductance */
411 s
->insn_bits
= ni6527_do_insn_bits
;
413 s
= dev
->subdevices
+ 2;
414 dev
->read_subdev
= s
;
415 s
->type
= COMEDI_SUBD_DI
;
416 s
->subdev_flags
= SDF_READABLE
| SDF_CMD_READ
;
418 s
->range_table
= &range_unknown
;
420 s
->do_cmdtest
= ni6527_intr_cmdtest
;
421 s
->do_cmd
= ni6527_intr_cmd
;
422 s
->cancel
= ni6527_intr_cancel
;
423 s
->insn_bits
= ni6527_intr_insn_bits
;
424 s
->insn_config
= ni6527_intr_insn_config
;
426 writeb(0x00, devpriv
->mite
->daq_io_addr
+ Filter_Enable(0));
427 writeb(0x00, devpriv
->mite
->daq_io_addr
+ Filter_Enable(1));
428 writeb(0x00, devpriv
->mite
->daq_io_addr
+ Filter_Enable(2));
430 writeb(ClrEdge
| ClrOverflow
| ClrFilter
| ClrInterval
,
431 devpriv
->mite
->daq_io_addr
+ Clear_Register
);
432 writeb(0x00, devpriv
->mite
->daq_io_addr
+ Master_Interrupt_Control
);
434 ret
= request_irq(mite_irq(devpriv
->mite
), ni6527_interrupt
,
435 IRQF_SHARED
, "ni6527", dev
);
437 printk(KERN_WARNING
"comedi i6527 irq not available\n");
439 dev
->irq
= mite_irq(devpriv
->mite
);
444 static void ni6527_detach(struct comedi_device
*dev
)
446 if (devpriv
&& devpriv
->mite
&& devpriv
->mite
->daq_io_addr
)
448 devpriv
->mite
->daq_io_addr
+ Master_Interrupt_Control
);
450 free_irq(dev
->irq
, dev
);
451 if (devpriv
&& devpriv
->mite
)
452 mite_unsetup(devpriv
->mite
);
455 static int ni6527_find_device(struct comedi_device
*dev
, int bus
, int slot
)
457 struct mite_struct
*mite
;
460 for (mite
= mite_devices
; mite
; mite
= mite
->next
) {
464 if (bus
!= mite
->pcidev
->bus
->number
||
465 slot
!= PCI_SLOT(mite
->pcidev
->devfn
))
468 for (i
= 0; i
< n_ni6527_boards
; i
++) {
469 if (mite_device_id(mite
) == ni6527_boards
[i
].dev_id
) {
470 dev
->board_ptr
= ni6527_boards
+ i
;
471 devpriv
->mite
= mite
;
476 printk(KERN_ERR
"comedi 6527: no device found\n");
481 static int __devinit
driver_ni6527_pci_probe(struct pci_dev
*dev
,
482 const struct pci_device_id
*ent
)
484 return comedi_pci_auto_config(dev
, &driver_ni6527
);
487 static void __devexit
driver_ni6527_pci_remove(struct pci_dev
*dev
)
489 comedi_pci_auto_unconfig(dev
);
492 static struct pci_driver driver_ni6527_pci_driver
= {
493 .id_table
= ni6527_pci_table
,
494 .probe
= &driver_ni6527_pci_probe
,
495 .remove
= __devexit_p(&driver_ni6527_pci_remove
)
498 static int __init
driver_ni6527_init_module(void)
502 retval
= comedi_driver_register(&driver_ni6527
);
506 driver_ni6527_pci_driver
.name
= (char *)driver_ni6527
.driver_name
;
507 return pci_register_driver(&driver_ni6527_pci_driver
);
510 static void __exit
driver_ni6527_cleanup_module(void)
512 pci_unregister_driver(&driver_ni6527_pci_driver
);
513 comedi_driver_unregister(&driver_ni6527
);
516 module_init(driver_ni6527_init_module
);
517 module_exit(driver_ni6527_cleanup_module
);
519 MODULE_AUTHOR("Comedi http://www.comedi.org");
520 MODULE_DESCRIPTION("Comedi low-level driver");
521 MODULE_LICENSE("GPL");