hwdrv_apci1032.c revision 90035c0886b256d75bced13b3b3cea5234aff136 
1/**
2@verbatim
3
4Copyright (C) 2004,2005  ADDI-DATA GmbH for the source code of this module.
5
6        ADDI-DATA GmbH
7        Dieselstrasse 3
8        D-77833 Ottersweier
9        Tel: +19(0)7223/9493-0
10        Fax: +49(0)7223/9493-92
11        http://www.addi-data-com
12        info@addi-data.com
13
14This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
15
16This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
17
18You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19
20You shoud also find the complete GPL in the COPYING file accompanying this source code.
21
22@endverbatim
23*/
24/*
25
26  +-----------------------------------------------------------------------+
27  | (C) ADDI-DATA GmbH          Dieselstraße 3       D-77833 Ottersweier  |
28  +-----------------------------------------------------------------------+
29  | Tel : +49 (0) 7223/9493-0     | email    : info@addi-data.com         |
30  | Fax : +49 (0) 7223/9493-92    | Internet : http://www.addi-data.com   |
31  +-------------------------------+---------------------------------------+
32  | Project     : APCI-1032       | Compiler   : GCC                      |
33  | Module name : hwdrv_apci1032.c| Version    : 2.96                     |
34  +-------------------------------+---------------------------------------+
35  | Project manager: Eric Stolz   | Date       :  02/12/2002              |
36  +-------------------------------+---------------------------------------+
37  | Description :   Hardware Layer Acces For APCI-1032                    |
38  +-----------------------------------------------------------------------+
39  |                             UPDATES                                   |
40  +----------+-----------+------------------------------------------------+
41  |   Date   |   Author  |          Description of updates                |
42  +----------+-----------+------------------------------------------------+
43  |          |           |                                                |
44  |          |           |                                                |
45  |          |           |                                                |
46  +----------+-----------+------------------------------------------------+
47*/
48
49/*
50+----------------------------------------------------------------------------+
51|                               Included files                               |
52+----------------------------------------------------------------------------+
53*/
54#include "hwdrv_apci1032.h"
55#include <linux/delay.h>
56//Global variables
57UINT ui_InterruptStatus = 0;
58
59/*
60+----------------------------------------------------------------------------+
61| Function   Name   : int i_APCI1032_ConfigDigitalInput                      |
62|			  (struct comedi_device *dev,struct comedi_subdevice *s,               |
63|                      struct comedi_insn *insn,unsigned int *data)                     |
64+----------------------------------------------------------------------------+
65| Task              : Configures the digital input Subdevice                 |
66+----------------------------------------------------------------------------+
67| Input Parameters  : struct comedi_device *dev : Driver handle                     |
68|                     unsigned int *data         : Data Pointer contains         |
69|                                          configuration parameters as below |
70|                                                                            |
71|			  data[0]            : 1 Enable  Digital Input Interrupt |
72|								   0 Disable Digital Input Interrupt |
73|			  data[1]            : 0 ADDIDATA Interrupt OR LOGIC	 |
74|								 : 1 ADDIDATA Interrupt AND LOGIC    |
75|			  data[2]			 : Interrupt mask for the mode 1	 |
76|			  data[3]			 : Interrupt mask for the mode 2	 |
77|																	 |
78+----------------------------------------------------------------------------+
79| Output Parameters :	--													 |
80+----------------------------------------------------------------------------+
81| Return Value      : TRUE  : No error occur                                 |
82|		            : FALSE : Error occur. Return the error          |
83|			                                                         |
84+----------------------------------------------------------------------------+
85*/
86
87INT i_APCI1032_ConfigDigitalInput(struct comedi_device * dev, struct comedi_subdevice * s,
88	struct comedi_insn * insn, unsigned int * data)
89{
90	UINT ui_TmpValue;
91
92	ULONG ul_Command1 = 0;
93	ULONG ul_Command2 = 0;
94	devpriv->tsk_Current = current;
95
96  /*******************************/
97	/* Set the digital input logic */
98  /*******************************/
99	if (data[0] == ADDIDATA_ENABLE) {
100		ul_Command1 = ul_Command1 | data[2];
101		ul_Command2 = ul_Command2 | data[3];
102		outl(ul_Command1,
103			devpriv->iobase + APCI1032_DIGITAL_IP_INTERRUPT_MODE1);
104		outl(ul_Command2,
105			devpriv->iobase + APCI1032_DIGITAL_IP_INTERRUPT_MODE2);
106		if (data[1] == ADDIDATA_OR) {
107			outl(0x4, devpriv->iobase + APCI1032_DIGITAL_IP_IRQ);
108			ui_TmpValue =
109				inl(devpriv->iobase + APCI1032_DIGITAL_IP_IRQ);
110		}		//if (data[1] == ADDIDATA_OR)
111		else {
112			outl(0x6, devpriv->iobase + APCI1032_DIGITAL_IP_IRQ);
113		}		//else if(data[1] == ADDIDATA_OR)
114	}			// if( data[0] == ADDIDATA_ENABLE)
115	else {
116		ul_Command1 = ul_Command1 & 0xFFFF0000;
117		ul_Command2 = ul_Command2 & 0xFFFF0000;
118		outl(ul_Command1,
119			devpriv->iobase + APCI1032_DIGITAL_IP_INTERRUPT_MODE1);
120		outl(ul_Command2,
121			devpriv->iobase + APCI1032_DIGITAL_IP_INTERRUPT_MODE2);
122		outl(0x0, devpriv->iobase + APCI1032_DIGITAL_IP_IRQ);
123	}			//else if  ( data[0] == ADDIDATA_ENABLE)
124
125	return insn->n;
126}
127
128/*
129+----------------------------------------------------------------------------+
130| Function   Name   : int i_APCI1032_Read1DigitalInput                       |
131|			  (struct comedi_device *dev,struct comedi_subdevice *s,               |
132|                      struct comedi_insn *insn,unsigned int *data)                     |
133+----------------------------------------------------------------------------+
134| Task              : Return the status of the digital input                 |
135+----------------------------------------------------------------------------+
136| Input Parameters  : struct comedi_device *dev      : Driver handle                |
137|		              UINT ui_Channel : Channel number to read       |
138|                     unsigned int *data          : Data Pointer to read status  |
139+----------------------------------------------------------------------------+
140| Output Parameters :	--													 |
141+----------------------------------------------------------------------------+
142| Return Value      : TRUE  : No error occur                                 |
143|		            : FALSE : Error occur. Return the error          |
144|			                                                         |
145+----------------------------------------------------------------------------+
146*/
147INT i_APCI1032_Read1DigitalInput(struct comedi_device * dev, struct comedi_subdevice * s,
148	struct comedi_insn * insn, unsigned int * data)
149{
150	UINT ui_TmpValue = 0;
151	UINT ui_Channel;
152	ui_Channel = CR_CHAN(insn->chanspec);
153	if (ui_Channel >= 0 && ui_Channel <= 31) {
154		ui_TmpValue = (UINT) inl(devpriv->iobase + APCI1032_DIGITAL_IP);
155		//  since only 1 channel reqd  to bring it to last bit it is rotated
156		//  8 +(chan - 1) times then ANDed with 1 for last bit.
157		*data = (ui_TmpValue >> ui_Channel) & 0x1;
158	}			//if(ui_Channel >= 0 && ui_Channel <=31)
159	else {
160		//comedi_error(dev," \n chan spec wrong\n");
161		return -EINVAL;	// "sorry channel spec wrong "
162	}			//else if(ui_Channel >= 0 && ui_Channel <=31)
163	return insn->n;
164}
165
166/*
167+----------------------------------------------------------------------------+
168| Function   Name   : int i_APCI1032_ReadMoreDigitalInput                    |
169|			  (struct comedi_device *dev,struct comedi_subdevice *s,               |
170|                     struct comedi_insn *insn,unsigned int *data)                      |
171+----------------------------------------------------------------------------+
172| Task              : Return the status of the Requested digital inputs      |
173+----------------------------------------------------------------------------+
174| Input Parameters  : struct comedi_device *dev      : Driver handle                |
175|                     UINT ui_NoOfChannels    : No Of Channels To be Read    |
176|                      UINT *data             : Data Pointer to read status  |
177+----------------------------------------------------------------------------+
178| Output Parameters :	--													 |
179+----------------------------------------------------------------------------+
180| Return Value      : TRUE  : No error occur                                 |
181|		            : FALSE : Error occur. Return the error          |
182|			                                                         |
183+----------------------------------------------------------------------------+
184*/
185
186INT i_APCI1032_ReadMoreDigitalInput(struct comedi_device * dev, struct comedi_subdevice * s,
187	struct comedi_insn * insn, unsigned int * data)
188{
189	UINT ui_PortValue = data[0];
190	UINT ui_Mask = 0;
191	UINT ui_NoOfChannels;
192
193	ui_NoOfChannels = CR_CHAN(insn->chanspec);
194	if (data[1] == 0) {
195		*data = (UINT) inl(devpriv->iobase + APCI1032_DIGITAL_IP);
196		switch (ui_NoOfChannels) {
197		case 2:
198			ui_Mask = 3;
199			*data = (*data >> (2 * ui_PortValue)) & ui_Mask;
200			break;
201		case 4:
202			ui_Mask = 15;
203			*data = (*data >> (4 * ui_PortValue)) & ui_Mask;
204			break;
205		case 8:
206			ui_Mask = 255;
207			*data = (*data >> (8 * ui_PortValue)) & ui_Mask;
208			break;
209		case 16:
210			ui_Mask = 65535;
211			*data = (*data >> (16 * ui_PortValue)) & ui_Mask;
212			break;
213		case 31:
214			break;
215		default:
216			//comedi_error(dev," \nchan spec wrong\n");
217			return -EINVAL;	// "sorry channel spec wrong "
218			break;
219		}		//switch(ui_NoOfChannels)
220	}			//if(data[1]==0)
221	else {
222		if (data[1] == 1) {
223			*data = ui_InterruptStatus;
224		}		//if(data[1]==1)
225	}			//else if(data[1]==0)
226	return insn->n;
227}
228
229/*
230+----------------------------------------------------------------------------+
231| Function   Name   : static void v_APCI1032_Interrupt					     |
232|					  (int irq , void *d)      |
233+----------------------------------------------------------------------------+
234| Task              : Interrupt handler for the interruptible digital inputs |
235+----------------------------------------------------------------------------+
236| Input Parameters  : int irq                 : irq number                   |
237|                     void *d                 : void pointer                 |
238+----------------------------------------------------------------------------+
239| Output Parameters :	--						     |
240+----------------------------------------------------------------------------+
241| Return Value      : TRUE  : No error occur                                 |
242|		            : FALSE : Error occur. Return the error          |
243|			                                                     |
244+----------------------------------------------------------------------------+
245*/
246static VOID v_APCI1032_Interrupt(int irq, void *d)
247{
248	struct comedi_device *dev = d;
249
250	UINT ui_Temp;
251	//disable the interrupt
252	ui_Temp = inl(devpriv->iobase + APCI1032_DIGITAL_IP_IRQ);
253	outl(ui_Temp & APCI1032_DIGITAL_IP_INTERRUPT_DISABLE,
254		devpriv->iobase + APCI1032_DIGITAL_IP_IRQ);
255	ui_InterruptStatus =
256		inl(devpriv->iobase + APCI1032_DIGITAL_IP_INTERRUPT_STATUS);
257	ui_InterruptStatus = ui_InterruptStatus & 0X0000FFFF;
258	send_sig(SIGIO, devpriv->tsk_Current, 0);	// send signal to the sample
259	outl(ui_Temp, devpriv->iobase + APCI1032_DIGITAL_IP_IRQ);	//enable the interrupt
260	return;
261}
262
263/*
264+----------------------------------------------------------------------------+
265| Function   Name   : int i_APCI1032_Reset(struct comedi_device *dev)               |                                                       |
266+----------------------------------------------------------------------------+
267| Task              :resets all the registers                                |
268+----------------------------------------------------------------------------+
269| Input Parameters  : struct comedi_device *dev
270+----------------------------------------------------------------------------+
271| Output Parameters :	--													 |
272+----------------------------------------------------------------------------+
273| Return Value      :                                                        |
274|			                                                         |
275+----------------------------------------------------------------------------+
276*/
277
278INT i_APCI1032_Reset(struct comedi_device * dev)
279{
280	outl(0x0, devpriv->iobase + APCI1032_DIGITAL_IP_IRQ);	//disable the interrupts
281	inl(devpriv->iobase + APCI1032_DIGITAL_IP_INTERRUPT_STATUS);	//Reset the interrupt status register
282	outl(0x0, devpriv->iobase + APCI1032_DIGITAL_IP_INTERRUPT_MODE1);	//Disable the and/or interrupt
283	outl(0x0, devpriv->iobase + APCI1032_DIGITAL_IP_INTERRUPT_MODE2);
284	return 0;
285}
286