source: rtems/cpukit/libmisc/mw-fb/mw_uid.c @ f26145b

4.104.114.84.95
Last change on this file since f26145b was aed742c, checked in by Ralf Corsepius <ralf.corsepius@…>, on 04/16/04 at 12:06:28

Remove stray white spaces.
  • Property mode set to 100644
File size: 8.0 KB
Line 
1/*
2/////////////////////////////////////////////////////////////////////////////
3// $Header$
4//
5// Copyright (c) 2000 - Rosimildo da Silva
6//
7// MODULE DESCRIPTION:
8// This module implements the input devices interface used by MicroWindows
9// in an embedded system environment.
10// It uses the RTEMS message queue as the repository for the messages posted
11// by the devices registered.
12//
13// MODIFICATION/HISTORY:
14//
15// $Log$
16// Revision 1.6  2004/03/26 06:59:18  ralf
17// 2004-03-26   Ralf Corsepius <ralf_corsepius@rtems.org>
18//
19//      * libmisc/capture/capture-cli.c, libmisc/capture/capture.c,
20//      libmisc/capture/capture.h, libmisc/cpuuse/cpuuse.c,
21//      libmisc/devnull/devnull.c, libmisc/fsmount/fsmount.h,
22//      libmisc/monitor/mon-config.c, libmisc/monitor/mon-dname.c,
23//      libmisc/monitor/mon-driver.c, libmisc/monitor/mon-extension.c,
24//      libmisc/monitor/mon-itask.c, libmisc/monitor/mon-monitor.c,
25//      libmisc/monitor/mon-mpci.c, libmisc/monitor/mon-object.c,
26//      libmisc/monitor/mon-prmisc.c, libmisc/monitor/mon-queue.c,
27//      libmisc/monitor/mon-server.c, libmisc/monitor/mon-symbols.c,
28//      libmisc/monitor/monitor.h, libmisc/monitor/symbols.h,
29//      libmisc/mw-fb/mw_uid.c, libmisc/rtmonuse/rtmonuse.c,
30//      libmisc/serdbg/serdbg.h, libmisc/serdbg/serdbgio.c,
31//      libmisc/serdbg/termios_printk.c, libmisc/serdbg/termios_printk.h,
32//      libmisc/shell/shell.c, libmisc/shell/shell.h, libmisc/stackchk/check.c,
33//      libmisc/stackchk/internal.h: Convert to using c99 fixed size types.
34//
35// Revision 1.5  2003/07/08 08:38:48  ralf
36// 2003-07-08   Ralf Corsepius <corsepiu@faw.uni-ulm.de>
37//
38//      * capture/capture-cli.c: Add config-header support.
39//      * capture/capture.c: Add config-header support.
40//      * cpuuse/cpuuse.c: Add config-header support.
41//      * devnull/devnull.c: Add config-header support.
42//      * dummy/dummy.c: Add config-header support.
43//      * dumpbuf/dumpbuf.c: Add config-header support.
44//      * monitor/mon-command.c: Add config-header support.
45//      * monitor/mon-config.c: Add config-header support.
46//      * monitor/mon-dname.c: Add config-header support.
47//      * monitor/mon-driver.c: Add config-header support.
48//      * monitor/mon-extension.c: Add config-header support.
49//      * monitor/mon-itask.c: Add config-header support.
50//      * monitor/mon-manager.c: Add config-header support.
51//      * monitor/mon-monitor.c: Add config-header support.
52//      * monitor/mon-mpci.c: Add config-header support.
53//      * monitor/mon-object.c: Add config-header support.
54//      * monitor/mon-prmisc.c: Add config-header support.
55//      * monitor/mon-queue.c: Add config-header support.
56//      * monitor/mon-server.c: Add config-header support.
57//      * monitor/mon-symbols.c: Add config-header support.
58//      * monitor/mon-task.c: Add config-header support.
59//      * mw-fb/mw_fb.c: Add config-header support.
60//      * mw-fb/mw_uid.c: Add config-header support.
61//      * rtmonuse/rtmonuse.c: Add config-header support.
62//      * serdbg/serdbg.c: Add config-header support.
63//      * serdbg/serdbgio.c: Add config-header support.
64//      * serdbg/termios_printk.c: Add config-header support.
65//      * shell/cmds.c: Add config-header support.
66//      * stackchk/check.c: Add config-header support.
67//      * untar/untar.c: Add config-header support.
68//
69// Revision 1.4  2002/01/04 18:32:48  joel
70// 2002-01-04   Ralf Corsepius <corsepiu@faw.uni-ulm.de>
71//
72//      * mw-fb/mw_uid.c: Apply rtems_set_errno_and_return_minus_one.
73//
74// Revision 1.3  2000/11/30 14:36:46  joel
75// 2000-11-30   Joel Sherrill <joel@OARcorp.com>
76//
77//      * mw-fb/mw_uid.c: Removed unnecessary dependency on <bsp.h>.
78//
79// Revision 1.2  2000/08/30 17:12:55  joel
80// 2000-08-30   Joel Sherrill <joel@OARcorp.com>
81//
82//      * Many files: Moved posix/include/rtems/posix/seterr.h to
83//      score/include/rtems/seterr.h so it would be available within
84//      all APIs.
85//
86// Revision 1.1  2000/08/30 08:21:24  joel
87// 2000-08-26  Rosimildo da Silva  <rdasilva@connecttel.com>
88//
89//      * Added generic Micro FrameBuffer interface for MicroWindows.
90//      This interface allows MicroWindows to under RTEMS. A sample
91//      driver has been developed for the pc386 BSP. See
92//      pc386/fb_vga.c as a sample.
93//      * Added Uniform Input Device interface for MicroWindows.
94//      See PC386 bsp for sample drivers for mouse and keyboard (console).
95//      * mw-bf: New directory.
96//      * Makefile.am, configure.in, wrapup/Makefile.am: Account for mw-fb.
97//      * mw-fb/Makefile.am: New file.
98//      * mw-fb/mw_fb.c: New file.
99//      * mw-fb/mw_fb.h: New file.
100//      * mw-fb/mw_uid.c: New file.
101//      * mw-fb/mw_uid.h: New file.
102//
103//
104/////////////////////////////////////////////////////////////////////////////
105*/
106
107#ifdef HAVE_CONFIG_H
108#include "config.h"
109#endif
110
111#include <stdio.h>
112#include <fcntl.h>
113#include <sys/ioctl.h>
114#include <errno.h>
115#include <rtems.h>
116
117#include <rtems/mw_uid.h>
118#include <rtems/seterr.h>
119
120static rtems_id   queue_id = 0;
121static int open_count = 0;
122
123/*
124#define MW_DEBUG_ON     1
125*/
126
127/* open a message queue with the kernel */
128int uid_open_queue( const char *q_name, int flags, size_t max_msgs )
129{
130   static rtems_name queue_name;
131
132   /*
133    * For the first device calling this function we would create the queue.
134    * It is assumed that this call is done at initialization, and no concerns
135    * regarding multi-threading is taken in consideration here.
136    */
137   if( !open_count )
138   {
139      rtems_status_code status;
140      queue_name = rtems_build_name( q_name[0],
141                                     q_name[1],
142                                     q_name[2],
143                                     q_name[3] );
144      status = rtems_message_queue_create( queue_name,
145                                           max_msgs,
146                                           sizeof( struct MW_UID_MESSAGE ),
147                                           RTEMS_FIFO | RTEMS_LOCAL,
148                                           &queue_id );
149      if( status != RTEMS_SUCCESSFUL )
150      {
151#ifdef MW_DEBUG_ON
152        printk( "UID_Queue: error creating queue: %d\n", status );
153#endif
154        return -1;
155      }
156#ifdef MW_DEBUG_ON
157      printk( "UID_Queue: id=%X\n", queue_id );
158#endif
159   }
160   open_count++;
161   return 0;
162}
163
164
165/* close message queue */
166int uid_close_queue( void )
167{
168  if( open_count == 1 )
169  {
170     rtems_message_queue_delete( queue_id );
171     queue_id = 0;
172  }
173  open_count--;
174  return 0;
175}
176
177/* reads for a message from the device */
178int uid_read_message( struct MW_UID_MESSAGE *m, unsigned long timeout )
179{
180  rtems_status_code status;
181  uint32_t   size = 0;
182  unsigned long micro_secs = timeout*1000;
183  int wait = ( timeout != 0 );
184
185  status = rtems_message_queue_receive( queue_id,
186                                       (void*)m,
187                                       &size,
188                                       wait ? RTEMS_WAIT : RTEMS_NO_WAIT,
189                                       TOD_MICROSECONDS_TO_TICKS(micro_secs ) );
190
191  if( status == RTEMS_SUCCESSFUL )
192  {
193     return size;
194  }
195  else if( ( status == RTEMS_UNSATISFIED ) || ( status == RTEMS_TIMEOUT ) )
196  {
197     /* this macro returns -1 */
198     rtems_set_errno_and_return_minus_one( ETIMEDOUT );
199  }
200  /* Here we have one error condition */
201#ifdef MW_DEBUG_ON
202  printk( "UID_Queue: error reading queue: %d\n", status );
203#endif
204  return -1;
205}
206
207
208/*
209 * add a message to the queue of events. This method cna be used to
210 * simulate hardware events, and it can be very handy during development
211 * a new interface.
212 */
213int uid_send_message( struct MW_UID_MESSAGE *m )
214{
215  rtems_status_code status;
216  status = rtems_message_queue_send( queue_id, ( void * )m,
217                                    sizeof( struct MW_UID_MESSAGE ) );
218  return status == RTEMS_SUCCESSFUL ? 0 : -1;
219}
220
221/*
222 * register the device to insert events to the message
223 * queue named as the value passed in q_name
224 */
225int uid_register_device( int fd, const char *q_name )
226{
227  return ioctl( fd, MW_UID_REGISTER_DEVICE, q_name );
228}
229
230/* tell this device to stop adding events to the queue */
231int uid_unregister_device( int fd )
232{
233  return ioctl( fd, MW_UID_UNREGISTER_DEVICE, NULL );
234}
235
236/* set the keyboard */
237int uid_set_kbd_mode( int fd, int mode, int *old_mode )
238{
239   if (ioctl( fd, MV_KDGKBMODE, old_mode) < 0)
240   {
241      return -1;
242   }
243   if (ioctl(fd, MV_KDSKBMODE, mode ) < 0 )
244   {
245      return -1;
246   }
247   return 0;
248}
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