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
) = {
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
)
180 data
[1] = readb(devpriv
->mite
->daq_io_addr
+ Port_Register(0));
181 data
[1] |= readb(devpriv
->mite
->daq_io_addr
+ Port_Register(1)) << 8;
182 data
[1] |= readb(devpriv
->mite
->daq_io_addr
+ Port_Register(2)) << 16;
187 static int ni6527_do_insn_bits(struct comedi_device
*dev
,
188 struct comedi_subdevice
*s
,
189 struct comedi_insn
*insn
, unsigned int *data
)
194 s
->state
&= ~data
[0];
195 s
->state
|= (data
[0] & data
[1]);
197 /* The open relay state on the board cooresponds to 1,
198 * but in Comedi, it is represented by 0. */
199 if (data
[0] & 0x0000ff) {
200 writeb((s
->state
^ 0xff),
201 devpriv
->mite
->daq_io_addr
+ Port_Register(3));
203 if (data
[0] & 0x00ff00) {
204 writeb((s
->state
>> 8) ^ 0xff,
205 devpriv
->mite
->daq_io_addr
+ Port_Register(4));
207 if (data
[0] & 0xff0000) {
208 writeb((s
->state
>> 16) ^ 0xff,
209 devpriv
->mite
->daq_io_addr
+ Port_Register(5));
217 static irqreturn_t
ni6527_interrupt(int irq
, void *d
)
219 struct comedi_device
*dev
= d
;
220 struct comedi_subdevice
*s
= dev
->subdevices
+ 2;
223 status
= readb(devpriv
->mite
->daq_io_addr
+ Change_Status
);
224 if ((status
& MasterInterruptStatus
) == 0)
226 if ((status
& EdgeStatus
) == 0)
229 writeb(ClrEdge
| ClrOverflow
,
230 devpriv
->mite
->daq_io_addr
+ Clear_Register
);
232 comedi_buf_put(s
->async
, 0);
233 s
->async
->events
|= COMEDI_CB_EOS
;
234 comedi_event(dev
, s
);
238 static int ni6527_intr_cmdtest(struct comedi_device
*dev
,
239 struct comedi_subdevice
*s
,
240 struct comedi_cmd
*cmd
)
245 /* step 1: make sure trigger sources are trivially valid */
247 tmp
= cmd
->start_src
;
248 cmd
->start_src
&= TRIG_NOW
;
249 if (!cmd
->start_src
|| tmp
!= cmd
->start_src
)
252 tmp
= cmd
->scan_begin_src
;
253 cmd
->scan_begin_src
&= TRIG_OTHER
;
254 if (!cmd
->scan_begin_src
|| tmp
!= cmd
->scan_begin_src
)
257 tmp
= cmd
->convert_src
;
258 cmd
->convert_src
&= TRIG_FOLLOW
;
259 if (!cmd
->convert_src
|| tmp
!= cmd
->convert_src
)
262 tmp
= cmd
->scan_end_src
;
263 cmd
->scan_end_src
&= TRIG_COUNT
;
264 if (!cmd
->scan_end_src
|| tmp
!= cmd
->scan_end_src
)
268 cmd
->stop_src
&= TRIG_COUNT
;
269 if (!cmd
->stop_src
|| tmp
!= cmd
->stop_src
)
275 /* step 2: make sure trigger sources are unique and */
276 /* are mutually compatible */
281 /* step 3: make sure arguments are trivially compatible */
283 if (cmd
->start_arg
!= 0) {
287 if (cmd
->scan_begin_arg
!= 0) {
288 cmd
->scan_begin_arg
= 0;
291 if (cmd
->convert_arg
!= 0) {
292 cmd
->convert_arg
= 0;
296 if (cmd
->scan_end_arg
!= 1) {
297 cmd
->scan_end_arg
= 1;
300 if (cmd
->stop_arg
!= 0) {
308 /* step 4: fix up any arguments */
316 static int ni6527_intr_cmd(struct comedi_device
*dev
,
317 struct comedi_subdevice
*s
)
319 /* struct comedi_cmd *cmd = &s->async->cmd; */
321 writeb(ClrEdge
| ClrOverflow
,
322 devpriv
->mite
->daq_io_addr
+ Clear_Register
);
323 writeb(FallingEdgeIntEnable
| RisingEdgeIntEnable
|
324 MasterInterruptEnable
| EdgeIntEnable
,
325 devpriv
->mite
->daq_io_addr
+ Master_Interrupt_Control
);
330 static int ni6527_intr_cancel(struct comedi_device
*dev
,
331 struct comedi_subdevice
*s
)
333 writeb(0x00, devpriv
->mite
->daq_io_addr
+ Master_Interrupt_Control
);
338 static int ni6527_intr_insn_bits(struct comedi_device
*dev
,
339 struct comedi_subdevice
*s
,
340 struct comedi_insn
*insn
, unsigned int *data
)
349 static int ni6527_intr_insn_config(struct comedi_device
*dev
,
350 struct comedi_subdevice
*s
,
351 struct comedi_insn
*insn
, unsigned int *data
)
355 if (data
[0] != INSN_CONFIG_CHANGE_NOTIFY
)
359 devpriv
->mite
->daq_io_addr
+ Rising_Edge_Detection_Enable(0));
361 devpriv
->mite
->daq_io_addr
+ Rising_Edge_Detection_Enable(1));
362 writeb(data
[1] >> 16,
363 devpriv
->mite
->daq_io_addr
+ Rising_Edge_Detection_Enable(2));
366 devpriv
->mite
->daq_io_addr
+ Falling_Edge_Detection_Enable(0));
368 devpriv
->mite
->daq_io_addr
+ Falling_Edge_Detection_Enable(1));
369 writeb(data
[2] >> 16,
370 devpriv
->mite
->daq_io_addr
+ Falling_Edge_Detection_Enable(2));
375 static int ni6527_attach(struct comedi_device
*dev
, struct comedi_devconfig
*it
)
377 struct comedi_subdevice
*s
;
380 printk(KERN_INFO
"comedi%d: ni6527\n", dev
->minor
);
382 ret
= alloc_private(dev
, sizeof(struct ni6527_private
));
386 ret
= ni6527_find_device(dev
, it
->options
[0], it
->options
[1]);
390 ret
= mite_setup(devpriv
->mite
);
392 printk(KERN_ERR
"comedi: error setting up mite\n");
396 dev
->board_name
= this_board
->name
;
397 printk(KERN_INFO
"comedi board: %s, ID=0x%02x\n", dev
->board_name
,
398 readb(devpriv
->mite
->daq_io_addr
+ ID_Register
));
400 ret
= alloc_subdevices(dev
, 3);
404 s
= dev
->subdevices
+ 0;
405 s
->type
= COMEDI_SUBD_DI
;
406 s
->subdev_flags
= SDF_READABLE
;
408 s
->range_table
= &range_digital
;
410 s
->insn_config
= ni6527_di_insn_config
;
411 s
->insn_bits
= ni6527_di_insn_bits
;
413 s
= dev
->subdevices
+ 1;
414 s
->type
= COMEDI_SUBD_DO
;
415 s
->subdev_flags
= SDF_READABLE
| SDF_WRITABLE
;
417 s
->range_table
= &range_unknown
; /* FIXME: actually conductance */
419 s
->insn_bits
= ni6527_do_insn_bits
;
421 s
= dev
->subdevices
+ 2;
422 dev
->read_subdev
= s
;
423 s
->type
= COMEDI_SUBD_DI
;
424 s
->subdev_flags
= SDF_READABLE
| SDF_CMD_READ
;
426 s
->range_table
= &range_unknown
;
428 s
->do_cmdtest
= ni6527_intr_cmdtest
;
429 s
->do_cmd
= ni6527_intr_cmd
;
430 s
->cancel
= ni6527_intr_cancel
;
431 s
->insn_bits
= ni6527_intr_insn_bits
;
432 s
->insn_config
= ni6527_intr_insn_config
;
434 writeb(0x00, devpriv
->mite
->daq_io_addr
+ Filter_Enable(0));
435 writeb(0x00, devpriv
->mite
->daq_io_addr
+ Filter_Enable(1));
436 writeb(0x00, devpriv
->mite
->daq_io_addr
+ Filter_Enable(2));
438 writeb(ClrEdge
| ClrOverflow
| ClrFilter
| ClrInterval
,
439 devpriv
->mite
->daq_io_addr
+ Clear_Register
);
440 writeb(0x00, devpriv
->mite
->daq_io_addr
+ Master_Interrupt_Control
);
442 ret
= request_irq(mite_irq(devpriv
->mite
), ni6527_interrupt
,
443 IRQF_SHARED
, "ni6527", dev
);
445 printk(KERN_WARNING
"comedi i6527 irq not available\n");
447 dev
->irq
= mite_irq(devpriv
->mite
);
452 static int ni6527_detach(struct comedi_device
*dev
)
454 if (devpriv
&& devpriv
->mite
&& devpriv
->mite
->daq_io_addr
)
456 devpriv
->mite
->daq_io_addr
+ Master_Interrupt_Control
);
459 free_irq(dev
->irq
, dev
);
461 if (devpriv
&& devpriv
->mite
)
462 mite_unsetup(devpriv
->mite
);
467 static int ni6527_find_device(struct comedi_device
*dev
, int bus
, int slot
)
469 struct mite_struct
*mite
;
472 for (mite
= mite_devices
; mite
; mite
= mite
->next
) {
476 if (bus
!= mite
->pcidev
->bus
->number
||
477 slot
!= PCI_SLOT(mite
->pcidev
->devfn
))
480 for (i
= 0; i
< n_ni6527_boards
; i
++) {
481 if (mite_device_id(mite
) == ni6527_boards
[i
].dev_id
) {
482 dev
->board_ptr
= ni6527_boards
+ i
;
483 devpriv
->mite
= mite
;
488 printk(KERN_ERR
"comedi 6527: no device found\n");
493 static int __devinit
driver_ni6527_pci_probe(struct pci_dev
*dev
,
494 const struct pci_device_id
*ent
)
496 return comedi_pci_auto_config(dev
, driver_ni6527
.driver_name
);
499 static void __devexit
driver_ni6527_pci_remove(struct pci_dev
*dev
)
501 comedi_pci_auto_unconfig(dev
);
504 static struct pci_driver driver_ni6527_pci_driver
= {
505 .id_table
= ni6527_pci_table
,
506 .probe
= &driver_ni6527_pci_probe
,
507 .remove
= __devexit_p(&driver_ni6527_pci_remove
)
510 static int __init
driver_ni6527_init_module(void)
514 retval
= comedi_driver_register(&driver_ni6527
);
518 driver_ni6527_pci_driver
.name
= (char *)driver_ni6527
.driver_name
;
519 return pci_register_driver(&driver_ni6527_pci_driver
);
522 static void __exit
driver_ni6527_cleanup_module(void)
524 pci_unregister_driver(&driver_ni6527_pci_driver
);
525 comedi_driver_unregister(&driver_ni6527
);
528 module_init(driver_ni6527_init_module
);
529 module_exit(driver_ni6527_cleanup_module
);