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1/****************************************************************************
2
3 (c) SYSTEC electronic GmbH, D-07973 Greiz, August-Bebel-Str. 29
4 www.systec-electronic.com
5
6 Project: openPOWERLINK
7
8 Description: source file for EPL API module (process image)
9
10 License:
11
12 Redistribution and use in source and binary forms, with or without
13 modification, are permitted provided that the following conditions
14 are met:
15
16 1. Redistributions of source code must retain the above copyright
17 notice, this list of conditions and the following disclaimer.
18
19 2. Redistributions in binary form must reproduce the above copyright
20 notice, this list of conditions and the following disclaimer in the
21 documentation and/or other materials provided with the distribution.
22
23 3. Neither the name of SYSTEC electronic GmbH nor the names of its
24 contributors may be used to endorse or promote products derived
25 from this software without prior written permission. For written
26 permission, please contact info@systec-electronic.com.
27
28 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
29 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
30 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
31 FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
32 COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
33 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
34 BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
35 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
36 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37 LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
38 ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
39 POSSIBILITY OF SUCH DAMAGE.
40
41 Severability Clause:
42
43 If a provision of this License is or becomes illegal, invalid or
44 unenforceable in any jurisdiction, that shall not affect:
45 1. the validity or enforceability in that jurisdiction of any other
46 provision of this License; or
47 2. the validity or enforceability in other jurisdictions of that or
48 any other provision of this License.
49
50 -------------------------------------------------------------------------
51
52 $RCSfile: EplApiProcessImage.c,v $
53
54 $Author: D.Krueger $
55
56 $Revision: 1.7 $ $Date: 2008/11/13 17:13:09 $
57
58 $State: Exp $
59
60 Build Environment:
61 GCC V3.4
62
63 -------------------------------------------------------------------------
64
65 Revision History:
66
67 2006/10/10 d.k.: start of the implementation, version 1.00
68
69****************************************************************************/
70
71#include "Epl.h"
72
73#include <linux/uaccess.h>
74
75/***************************************************************************/
76/* */
77/* */
78/* G L O B A L D E F I N I T I O N S */
79/* */
80/* */
81/***************************************************************************/
82
83//---------------------------------------------------------------------------
84// const defines
85//---------------------------------------------------------------------------
86
87//---------------------------------------------------------------------------
88// local types
89//---------------------------------------------------------------------------
90
91//---------------------------------------------------------------------------
92// modul globale vars
93//---------------------------------------------------------------------------
94
95//---------------------------------------------------------------------------
96// local function prototypes
97//---------------------------------------------------------------------------
98
99/***************************************************************************/
100/* */
101/* */
102/* C L A S S EplApi */
103/* */
104/* */
105/***************************************************************************/
106//
107// Description:
108//
109//
110/***************************************************************************/
111
112//=========================================================================//
113// //
114// P R I V A T E D E F I N I T I O N S //
115// //
116//=========================================================================//
117
118//---------------------------------------------------------------------------
119// const defines
120//---------------------------------------------------------------------------
121
122//---------------------------------------------------------------------------
123// local types
124//---------------------------------------------------------------------------
125
126#if ((EPL_API_PROCESS_IMAGE_SIZE_IN > 0) || (EPL_API_PROCESS_IMAGE_SIZE_OUT > 0))
127typedef struct {
128#if EPL_API_PROCESS_IMAGE_SIZE_IN > 0
129 u8 m_abProcessImageInput[EPL_API_PROCESS_IMAGE_SIZE_IN];
130#endif
131#if EPL_API_PROCESS_IMAGE_SIZE_OUT > 0
132 u8 m_abProcessImageOutput[EPL_API_PROCESS_IMAGE_SIZE_OUT];
133#endif
134
135} tEplApiProcessImageInstance;
136
137//---------------------------------------------------------------------------
138// local vars
139//---------------------------------------------------------------------------
140
141static tEplApiProcessImageInstance EplApiProcessImageInstance_g;
142#endif
143
144//---------------------------------------------------------------------------
145// local function prototypes
146//---------------------------------------------------------------------------
147
148//=========================================================================//
149// //
150// P U B L I C F U N C T I O N S //
151// //
152//=========================================================================//
153
154//---------------------------------------------------------------------------
155//
156// Function: EplApiProcessImageSetup()
157//
158// Description: sets up static process image
159//
160// Parameters: (none)
161//
162// Returns: tEplKernel = error code
163//
164//
165// State:
166//
167//---------------------------------------------------------------------------
168
169tEplKernel EplApiProcessImageSetup(void)
170{
171 tEplKernel Ret = kEplSuccessful;
172#if ((EPL_API_PROCESS_IMAGE_SIZE_IN > 0) || (EPL_API_PROCESS_IMAGE_SIZE_OUT > 0))
173 unsigned int uiVarEntries;
174 tEplObdSize ObdSize;
175#endif
176
177#if EPL_API_PROCESS_IMAGE_SIZE_IN > 0
178 uiVarEntries = EPL_API_PROCESS_IMAGE_SIZE_IN;
179 ObdSize = 1;
180 Ret = EplApiLinkObject(0x2000,
181 EplApiProcessImageInstance_g.
182 m_abProcessImageInput, &uiVarEntries, &ObdSize,
183 1);
184
185 uiVarEntries = EPL_API_PROCESS_IMAGE_SIZE_IN;
186 ObdSize = 1;
187 Ret = EplApiLinkObject(0x2001,
188 EplApiProcessImageInstance_g.
189 m_abProcessImageInput, &uiVarEntries, &ObdSize,
190 1);
191
192 ObdSize = 2;
193 uiVarEntries = EPL_API_PROCESS_IMAGE_SIZE_IN / ObdSize;
194 Ret = EplApiLinkObject(0x2010,
195 EplApiProcessImageInstance_g.
196 m_abProcessImageInput, &uiVarEntries, &ObdSize,
197 1);
198
199 ObdSize = 2;
200 uiVarEntries = EPL_API_PROCESS_IMAGE_SIZE_IN / ObdSize;
201 Ret = EplApiLinkObject(0x2011,
202 EplApiProcessImageInstance_g.
203 m_abProcessImageInput, &uiVarEntries, &ObdSize,
204 1);
205
206 ObdSize = 4;
207 uiVarEntries = EPL_API_PROCESS_IMAGE_SIZE_IN / ObdSize;
208 Ret = EplApiLinkObject(0x2020,
209 EplApiProcessImageInstance_g.
210 m_abProcessImageInput, &uiVarEntries, &ObdSize,
211 1);
212
213 ObdSize = 4;
214 uiVarEntries = EPL_API_PROCESS_IMAGE_SIZE_IN / ObdSize;
215 Ret = EplApiLinkObject(0x2021,
216 EplApiProcessImageInstance_g.
217 m_abProcessImageInput, &uiVarEntries, &ObdSize,
218 1);
219#endif
220
221#if EPL_API_PROCESS_IMAGE_SIZE_OUT > 0
222 uiVarEntries = EPL_API_PROCESS_IMAGE_SIZE_OUT;
223 ObdSize = 1;
224 Ret = EplApiLinkObject(0x2030,
225 EplApiProcessImageInstance_g.
226 m_abProcessImageOutput, &uiVarEntries, &ObdSize,
227 1);
228
229 uiVarEntries = EPL_API_PROCESS_IMAGE_SIZE_OUT;
230 ObdSize = 1;
231 Ret = EplApiLinkObject(0x2031,
232 EplApiProcessImageInstance_g.
233 m_abProcessImageOutput, &uiVarEntries, &ObdSize,
234 1);
235
236 ObdSize = 2;
237 uiVarEntries = EPL_API_PROCESS_IMAGE_SIZE_OUT / ObdSize;
238 Ret = EplApiLinkObject(0x2040,
239 EplApiProcessImageInstance_g.
240 m_abProcessImageOutput, &uiVarEntries, &ObdSize,
241 1);
242
243 ObdSize = 2;
244 uiVarEntries = EPL_API_PROCESS_IMAGE_SIZE_OUT / ObdSize;
245 Ret = EplApiLinkObject(0x2041,
246 EplApiProcessImageInstance_g.
247 m_abProcessImageOutput, &uiVarEntries, &ObdSize,
248 1);
249
250 ObdSize = 4;
251 uiVarEntries = EPL_API_PROCESS_IMAGE_SIZE_OUT / ObdSize;
252 Ret = EplApiLinkObject(0x2050,
253 EplApiProcessImageInstance_g.
254 m_abProcessImageOutput, &uiVarEntries, &ObdSize,
255 1);
256
257 ObdSize = 4;
258 uiVarEntries = EPL_API_PROCESS_IMAGE_SIZE_OUT / ObdSize;
259 Ret = EplApiLinkObject(0x2051,
260 EplApiProcessImageInstance_g.
261 m_abProcessImageOutput, &uiVarEntries, &ObdSize,
262 1);
263#endif
264
265 return Ret;
266}
267
268//----------------------------------------------------------------------------
269// Function: EplApiProcessImageExchangeIn()
270//
271// Description: replaces passed input process image with the one of EPL stack
272//
273// Parameters: pPI_p = input process image
274//
275// Returns: tEplKernel = error code
276//
277// State:
278//----------------------------------------------------------------------------
279
280tEplKernel EplApiProcessImageExchangeIn(tEplApiProcessImage *pPI_p)
281{
282 tEplKernel Ret = kEplSuccessful;
283
284#if EPL_API_PROCESS_IMAGE_SIZE_IN > 0
285 copy_to_user(pPI_p->m_pImage,
286 EplApiProcessImageInstance_g.m_abProcessImageInput,
287 min(pPI_p->m_uiSize,
288 sizeof(EplApiProcessImageInstance_g.
289 m_abProcessImageInput)));
290#endif
291
292 return Ret;
293}
294
295//----------------------------------------------------------------------------
296// Function: EplApiProcessImageExchangeOut()
297//
298// Description: copies passed output process image to EPL stack.
299//
300// Parameters: pPI_p = output process image
301//
302// Returns: tEplKernel = error code
303//
304// State:
305//----------------------------------------------------------------------------
306
307tEplKernel EplApiProcessImageExchangeOut(tEplApiProcessImage *pPI_p)
308{
309 tEplKernel Ret = kEplSuccessful;
310
311#if EPL_API_PROCESS_IMAGE_SIZE_OUT > 0
312 copy_from_user(EplApiProcessImageInstance_g.m_abProcessImageOutput,
313 pPI_p->m_pImage,
314 min(pPI_p->m_uiSize,
315 sizeof(EplApiProcessImageInstance_g.
316 m_abProcessImageOutput)));
317#endif
318
319 return Ret;
320}
321
322//=========================================================================//
323// //
324// P R I V A T E F U N C T I O N S //
325// //
326//=========================================================================//
327
328// EOF