source: trunk/kernel/devices/dev_fbf.c@ 667

Last change on this file since 667 was 657, checked in by alain, 7 years ago

Introduce remote_buf.c/.h & socket.c/.h files.
Update dev_nic.c/.h files.
File size: 35.5 KB
Line 
1/*
2 * dev_fbf.c - FBF (Frame Buffer) generic device API implementation.
3 *
4 * Author Alain Greiner (2016,2017,2018,2019,2020)
5 *
6 * Copyright (c) UPMC Sorbonne Universites
7 *
8 * This file is part of ALMOS-MK
9 *
10 * ALMOS-MKH.is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; version 2.0 of the License.
13 *
14 * ALMOS-MKH.is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with ALMOS-kernel; if not, write to the Free Software Foundation,
21 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24#include <kernel_config.h>
25#include <hal_kernel_types.h>
26#include <hal_gpt.h>
27#include <hal_drivers.h>
28#include <hal_irqmask.h>
29#include <hal_macros.h>
30#include <hal_uspace.h>
31#include <hal_vmm.h>
32#include <thread.h>
33#include <printk.h>
34#include <string.h>
35#include <memcpy.h>
36#include <chdev.h>
37#include <dev_fbf.h>
38
39/////////////////////////////////////////////////////////////////////////////////////////
40// Extern global variables
41/////////////////////////////////////////////////////////////////////////////////////////
42
43extern chdev_directory_t chdev_dir; // allocated in kernel_init.c
44
45///////////////////////////////////////////
46char * dev_fbf_cmd_str( uint32_t cmd_type )
47{
48 if ( cmd_type == FBF_GET_CONFIG ) return "GET_CONFIG";
49 else if( cmd_type == FBF_CREATE_WINDOW ) return "CREATE_WINDOW";
50 else if( cmd_type == FBF_DELETE_WINDOW ) return "DELETE_WINDOW";
51 else if( cmd_type == FBF_MOVE_WINDOW ) return "MOVE_WINDOW";
52 else if( cmd_type == FBF_REFRESH_WINDOW ) return "REFRESH_WINDOW";
53 else if( cmd_type == FBF_DIRECT_WRITE ) return "DIRECT_WRITE";
54 else if( cmd_type == FBF_DIRECT_READ ) return "DIRECT_READ";
55 else return "undefined";
56}
57
58////////////////////////////////////
59void dev_fbf_init( chdev_t * fbf )
60{
61 uint32_t wid;
62
63 // set chdev name
64 strcpy( fbf->name, "fbf" );
65
66 // initialize lock protecting the windows
67 remote_rwlock_init( XPTR( local_cxy , &fbf->ext.fbf.windows_lock ),
68 LOCK_FBF_WINDOWS );
69
70 // initialize root of windows xlist
71 xlist_root_init( XPTR( local_cxy , &fbf->ext.fbf.windows_root ) );
72
73 // initialize windows_tbl[] array
74 for( wid = 0 ; wid < CONFIG_FBF_WINDOWS_MAX_NR ; wid++ )
75 {
76 fbf->ext.fbf.windows_tbl[wid] = XPTR_NULL;
77 }
78
79 // initialize wid allocator bitmap
80 bitmap_init( fbf->ext.fbf.windows_bitmap , CONFIG_FBF_WINDOWS_MAX_NR );
81
82 // call driver init function to initialize the harware FBF
83 // and initialize the width, height, and subsampling FBF chdev fields
84 hal_drivers_fbf_init( fbf );
85
86} // end dev_fbf_init()
87
88//////////////////////////////////////////
89void dev_fbf_get_config( uint32_t * width,
90 uint32_t * height,
91 uint32_t * type )
92{
93 // get extended pointer on FBF chdev descriptor
94 xptr_t dev_xp = chdev_dir.fbf[0];
95
96assert( (dev_xp != XPTR_NULL) , "undefined FBF chdev descriptor" );
97
98 // get FBF chdev cluster and local pointer
99 cxy_t dev_cxy = GET_CXY( dev_xp );
100 chdev_t * dev_ptr = (chdev_t *)GET_PTR( dev_xp );
101
102 // return values
103 *width = hal_remote_l32( XPTR( dev_cxy , &dev_ptr->ext.fbf.width ) );
104 *height = hal_remote_l32( XPTR( dev_cxy , &dev_ptr->ext.fbf.height ) );
105 *type = hal_remote_l32( XPTR( dev_cxy , &dev_ptr->ext.fbf.subsampling ) );
106
107} // end dev_fbf_get_config()
108
109///////////////////////////////////////////////
110uint32_t dev_fbf_create_window( uint32_t nlines,
111 uint32_t npixels,
112 uint32_t l_min,
113 uint32_t p_min,
114 intptr_t * user_buffer )
115{
116 kmem_req_t req;
117 fbf_window_t * window; // window descriptor (created in local cluster)
118 vseg_t * vseg; // vseg descriptor (created in reference cluster)
119 intptr_t vseg_base; // vseg base address in user space
120
121 // get local pointers on calling thread and process
122 thread_t * this = CURRENT_THREAD;
123 process_t * process = this->process;
124
125#if DEBUG_DEV_FBF
126uint32_t cycle = (uint32_t)hal_get_cycles();
127if( DEBUG_DEV_FBF < cycle )
128printk("\n[%s] thread[%x,%x] enter : nlines %d / npixels %d / l_min %d / p_min %d / cycle %d\n",
129__FUNCTION__ , process->pid, this->trdid, nlines, npixels, l_min, p_min, cycle );
130#endif
131
132 // get cluster and pointers on FBF chdev
133 xptr_t fbf_xp = chdev_dir.fbf[0];
134 cxy_t fbf_cxy = GET_CXY( fbf_xp );
135 chdev_t * fbf_ptr = GET_PTR( fbf_xp );
136
137// check fbf_xp definition
138assert( (fbf_xp != XPTR_NULL) , "undefined FBF chdev descriptor" );
139
140 // get FBF width and height
141 uint32_t fbf_width = hal_remote_l32( XPTR( fbf_cxy , &fbf_ptr->ext.fbf.width ) );
142 uint32_t fbf_height = hal_remote_l32( XPTR( fbf_cxy , &fbf_ptr->ext.fbf.height ) );
143
144 // check new window size and coordinates
145 if( (((l_min + nlines) > fbf_height) || ((p_min + npixels) > fbf_width)) )
146 {
147 printk("\n[ERROR] in %s / thread[%x,%x]"
148 "illegal new coordinates (%d,%d) for window (%d,%d) in fbf (%d,%d)\n",
149 process->pid, this->trdid, p_min, l_min, npixels, nlines, fbf_width, fbf_height );
150 return -1;
151 }
152
153 // build extended pointers on windows lock, root, and wid allocator
154 xptr_t windows_lock_xp = XPTR( fbf_cxy , &fbf_ptr->ext.fbf.windows_lock );
155 xptr_t windows_root_xp = XPTR( fbf_cxy , &fbf_ptr->ext.fbf.windows_root );
156 xptr_t windows_bitmap_xp = XPTR( fbf_cxy , fbf_ptr->ext.fbf.windows_bitmap );
157
158 // allocate memory for the window descriptor in local cluster
159 req.type = KMEM_KCM;
160 req.order = bits_log2( sizeof(fbf_window_t) );
161 req.flags = AF_ZERO | AF_KERNEL;
162 window = kmem_alloc( &req );
163
164 if( window == NULL )
165 {
166 printk("\n[ERROR] in %s / thread[%x,%x] cannot allocate window descriptor\n",
167 __FUNCTION__, process->pid, this->trdid );
168 return -1;
169 }
170
171#if (DEBUG_DEV_FBF & 1)
172cycle = (uint32_t)hal_get_cycles();
173if( DEBUG_DEV_FBF < cycle )
174printk("\n[%s] thread[%x,%x] created window descriptor %x / cycle %d\n",
175__FUNCTION__ , process->pid, this->trdid, window, cycle );
176#endif
177
178 // getpointers on reference process
179 xptr_t ref_xp = process->ref_xp;
180 process_t * ref_ptr = GET_PTR( ref_xp );
181 cxy_t ref_cxy = GET_CXY( ref_xp );
182
183 // allocate a new vseg, and introduce it in the reference process VSL
184 if( ref_cxy == local_cxy )
185 {
186 vseg = vmm_create_vseg( process, // owner process
187 VSEG_TYPE_ANON, // localised, public
188 0, // base, unused for ANON
189 nlines * npixels, // size
190 0, // file_offset, unused for ANON
191 0, // file_size, unused for ANON
192 XPTR_NULL, // mapper_xp, unused for ANON
193 local_cxy ); // mapping cluster
194 }
195 else
196 {
197 rpc_vmm_create_vseg_client( ref_cxy,
198 ref_ptr,
199 VSEG_TYPE_ANON,
200 0, // base, unused for ANON
201 nlines * npixels, // size
202 0, // file_offset, unused for ANON
203 0, // file size, unused for ANON
204 XPTR_NULL, // mapper_xp, unused for ANON
205 local_cxy,
206 &vseg );
207 }
208
209 if( vseg == NULL )
210 {
211 printk("\n[ERROR] in %s / thread[%x,%x] cannot create vseg in reference cluster\n",
212 __FUNCTION__, process->pid, this->trdid );
213 req.ptr = (void *)window;
214 kmem_free( &req );
215 return -1;
216 }
217
218 // get vseg base
219 vseg_base = (intptr_t)hal_remote_lpt( XPTR( ref_cxy , &vseg->min ) );
220
221#if (DEBUG_DEV_FBF & 1)
222cycle = (uint32_t)hal_get_cycles();
223if( DEBUG_DEV_FBF < cycle )
224printk("\n[%s] thread[%x,%x] allocated vseg / base %x / cycle %d\n",
225__FUNCTION__ , process->pid, this->trdid, vseg_base, cycle );
226#endif
227
228 // take the lock protecting windows in write mode
229 remote_rwlock_wr_acquire( windows_lock_xp );
230
231 // allocate a wid from allocator in FBF descriptor extension
232 uint32_t wid = bitmap_remote_alloc( windows_bitmap_xp , CONFIG_FBF_WINDOWS_MAX_NR );
233
234 if( wid == 0xFFFFFFFF )
235 {
236 printk("\n[ERROR] in %s / thread[%x,%x] cannot allocate buffer for window\n",
237 __FUNCTION__, process->pid, this->trdid );
238 req.ptr = (void *)window;
239 kmem_free( &req );
240 vmm_remove_vseg( process , vseg );
241 return -1;
242 }
243
244 // initialize window descriptor
245 window->pid = process->pid;
246 window->wid = wid;
247 window->height = nlines;
248 window->width = npixels;
249 window->l_min = l_min;
250 window->p_min = p_min;
251 window->hidden = false;
252 window->buffer = (uint8_t *)vseg_base;
253
254 // register new window in xlist rooted in FBF extension
255 xlist_add_last( windows_root_xp , XPTR( local_cxy , &window->xlist ) );
256
257 // build extended pointer on relevant entry in windows_tbl[] array
258 xptr_t windows_tbl_xp = XPTR( fbf_cxy , &fbf_ptr->ext.fbf.windows_tbl[wid] );
259
260 // register new window in windows_tbl[] stored in FBF extension
261 hal_remote_s64( windows_tbl_xp , XPTR( local_cxy , window ) );
262
263 // release the lock protecting windows in write mode
264 remote_rwlock_wr_release( windows_lock_xp );
265
266#if DEBUG_DEV_FBF
267cycle = (uint32_t)hal_get_cycles();
268if( DEBUG_DEV_FBF < cycle )
269printk("\n[%s] thread[%x,%x] exit / wid %d / buffer %x / cycle %d\n",
270__FUNCTION__ , this->process->pid, this->trdid, wid , window->buffer, cycle );
271#endif
272
273#if (DEBUG_DEV_FBF & 1)
274hal_vmm_display( ref_xp , true );
275#endif
276
277 // return pointer on allocated buffer
278 *user_buffer = vseg_base;
279
280 return wid;
281
282} // end dev_fbf_create_window()
283
284////////////////////////////////////////////////////////////////////////////////////////
285// This static function is called by the dev_fbf_display() function.
286// For a partial FBF line, identified by the <f_line>, <f_p_min>, <f_p_max> arguments
287// in FBF reference, and for one remote window, identified by the <window_xp> argument,
288// it updates the target buffer identified by <t_buffer>, and containing exactly
289// (f_p_max - f_p_min) pixels.
290// Depending on the actual overlap between the window and the <t_buffer> representing
291// the partial FBF line, it moves up to (f_p_max - f_p_min) pixels from the window
292// buffer to the target buffer. The number of moved pixels can be nul if no overlap.
293////////////////////////////////////////////////////////////////////////////////////////
294// @ f_line : [in] line index in FBF reference (from 0 to fbf_height-1).
295// @ f_p_min : [in] first pixel in FBF line.
296// @ f_p_max : [in] last pixel in FBF line (excluded).
297// @ window_xp : [in] extended pointer on checked window .
298// @ t_buffer : [out] local pointer on target buffer to be updated.
299///////////////////////////////////////////////////////////////////////////////////////
300__attribute__ ((noinline)) static void handle_one_window( uint32_t f_line,
301 uint32_t f_p_min,
302 uint32_t f_p_max,
303 xptr_t window_xp,
304 uint8_t * t_buffer )
305{
306 // get remote window descriptor cluster and local pointer
307 cxy_t window_cxy = GET_CXY( window_xp );
308 fbf_window_t * window_ptr = GET_PTR( window_xp );
309
310 // get remote window min/max coordinates in FBF reference
311 uint32_t w_l_min = hal_remote_l32( XPTR( window_cxy , &window_ptr->l_min ) );
312 uint32_t w_p_min = hal_remote_l32( XPTR( window_cxy , &window_ptr->p_min ) );
313 uint32_t w_height = hal_remote_l32( XPTR( window_cxy , &window_ptr->height ) );
314 uint32_t w_width = hal_remote_l32( XPTR( window_cxy , &window_ptr->width ) );
315 uint32_t w_l_max = w_l_min + w_height;
316 uint32_t w_p_max = w_p_min + w_width;
317
318 // does nothing if partial FBF line does not overlap the window
319 if( (f_line < w_l_min) || (f_line >= w_l_max) ||
320 (f_p_max < w_p_min) || (f_p_min >= w_p_max) ) return;
321
322 // get pointer on window buffer in user space
323 uint8_t * w_buffer = hal_remote_lpt( XPTR( window_cxy , &window_ptr->buffer ) );
324
325 // get min & max indexes for pixels to be moved in FBF reference
326 uint32_t f_pixel_min = (f_p_min < w_p_min) ? w_p_min : f_p_min;
327 uint32_t f_pixel_max = (f_p_max < w_p_max) ? f_p_max : w_p_max;
328
329 // compute number of pixels to move from w_buffer to f_buffer
330 uint32_t npixels = f_pixel_max - f_pixel_min;
331
332 // compute offset in target buffer
333 uint32_t t_offset = f_pixel_min - f_p_min;
334
335 // compute line index in window
336 uint32_t w_line = f_line - w_l_min;
337
338 // compute offset in window buffer
339 uint32_t w_offset = (w_line * w_height) + f_pixel_min - w_p_min;
340
341 // move pixels from w_buffer (user space) to t_buffer in kernel space
342 hal_copy_from_uspace( XPTR( local_cxy , &t_buffer[t_offset] ),
343 &w_buffer[w_offset],
344 npixels );
345
346} // end handle_one_window()
347
348////////////////////////////////////////////////////////////////////////////////////////
349// This static function is called by dev_fbf_refresh_window(), dev_fbf_move_window(),
350// dev_fbf_resize_window(), and dev_fbf_delete_window(). It updates all lines of the
351// window identified by the <window_xp>, <line_first>, and <line_last>> arguments.
352// It scan all registered windows to take into account the overlap priorities defined
353// by the windows xlist. It does not take the lock protecting the xlist, that must be
354// taken by the calling function.
355////////////////////////////////////////////////////////////////////////////////////////
356// @ window_xp : [in] extended pointer on window defining the FBF pixels to refresh.
357// @ line_first : [in] first line index.
358// @ line_last : [in] last line index (excluded).
359////////////////////////////////////////////////////////////////////////////////////////
360error_t fbf_update( xptr_t window_xp,
361 uint32_t line_first,
362 uint32_t line_last )
363{
364 uint32_t line; // iterator to scan the FBF lines
365 uint32_t pixel; // iterator to scan pixels in one FBF line
366 xptr_t iter_xp; // iterator to scan the list of windows
367 error_t error;
368
369 // this intermediate buffer stores one line in
370 // target window, to handle other windows overlap
371 uint8_t line_buffer[CONFIG_FBF_WINDOWS_MAX_WIDTH];
372
373 // get pointer on calling thread and core lid
374 thread_t * this = CURRENT_THREAD;
375
376 // get window cluster and local pointer
377 cxy_t window_cxy = GET_CXY( window_xp );
378 fbf_window_t * window_ptr = GET_PTR( window_xp );
379
380#if DEBUG_DEV_FBF
381uint32_t wid = hal_remote_l32( XPTR( window_cxy , &window_ptr->wid ) );
382uint32_t lid = this->core->lid;
383uint32_t cycle = (uint32_t)hal_get_cycles();
384if( DEBUG_DEV_FBF < cycle )
385printk("\n[%s] core[%x,%d] enter / wid %d / cycle %d\n",
386__FUNCTION__, local_cxy, lid, wid, cycle );
387#endif
388
389 // get pointers on FBF chdev
390 xptr_t fbf_xp = chdev_dir.fbf[0];
391 cxy_t fbf_cxy = GET_CXY( fbf_xp );
392 chdev_t * fbf_ptr = GET_PTR( fbf_xp );
393
394 // get frame buffer width
395 uint32_t fbf_width = hal_remote_l32( XPTR( fbf_cxy , &fbf_ptr->ext.fbf.width ) );
396
397 // get pointer on driver command function
398 dev_cmd_t * cmd = hal_remote_lpt( XPTR( fbf_cxy , &fbf_ptr->cmd ) );
399
400 // build extended pointers on windows xlist root
401 xptr_t windows_root_xp = XPTR( fbf_cxy , &fbf_ptr->ext.fbf.windows_root );
402
403 // get window size and coordinates
404 uint32_t p_min = hal_remote_l32( XPTR( window_cxy , &window_ptr->p_min ) );
405 uint32_t l_min = hal_remote_l32( XPTR( window_cxy , &window_ptr->l_min ) );
406 uint32_t w_pixels = hal_remote_l32( XPTR( window_cxy , &window_ptr->width ) );
407
408 error = 0;
409
410 // loop on target window lines (FBF coordinates)
411 for( line = l_min + line_first ; line < (l_min + line_last) ; line++ )
412 {
413 // reset the line buffer to default value
414 for( pixel = 0 ; pixel < w_pixels ; pixel++ ) line_buffer[pixel] = 127;
415
416 // loop on all windows
417 XLIST_FOREACH( windows_root_xp , iter_xp )
418 {
419 // get pointers on remote window
420 xptr_t tgt_xp = XLIST_ELEMENT( iter_xp , fbf_window_t , xlist );
421 fbf_window_t * tgt_ptr = GET_PTR( window_xp );
422 cxy_t tgt_cxy = GET_CXY( window_xp );
423
424 bool_t hidden = hal_remote_l32( XPTR( tgt_cxy , &tgt_ptr->hidden ) );
425
426 // fill the line_buf for this window if not hidden
427 if( hidden == false ) handle_one_window( line, // line index
428 p_min, // pixel_min
429 p_min + w_pixels, // pixel_max
430 tgt_xp, // window_xp
431 line_buffer );
432 } // end for windows
433
434 // compute offset in FBF
435 uint32_t fbf_offset = p_min + (line * fbf_width);
436
437 // register command in calling thread descriptor
438 this->fbf_cmd.dev_xp = fbf_xp;
439 this->fbf_cmd.type = FBF_DRIVER_KERNEL_WRITE;
440 this->fbf_cmd.buffer = line_buffer;
441 this->fbf_cmd.npixels = w_pixels;
442 this->fbf_cmd.offset = fbf_offset;
443
444 // call driver to display one line
445 cmd( XPTR( local_cxy , this ) );
446
447 error |= this->fbf_cmd.error;
448
449 } // end for lines
450
451#if DEBUG_DEV_FBF
452cycle = (uint32_t)hal_get_cycles();
453if( DEBUG_DEV_FBF < cycle )
454printk("\n[%s] core[%x,%d] exit / wid %d / cycle %d\n",
455__FUNCTION__, local_cxy, this->core->lid, wid, cycle );
456#endif
457
458 // return I/O operation status
459 return error;
460
461} // end fbf_update()
462
463//////////////////////////////////////////////
464error_t dev_fbf_delete_window( uint32_t wid )
465{
466 kmem_req_t req;
467
468 thread_t * this = CURRENT_THREAD;
469 process_t * process = this->process;
470
471#if DEBUG_DEV_FBF
472uint32_t cycle = (uint32_t)hal_get_cycles();
473if( DEBUG_DEV_FBF < cycle )
474printk("\n[%s] thread[%x,%x] enters : wid %d / cycle %d\n",
475__FUNCTION__ , process->pid, this->trdid, wid, cycle );
476#endif
477
478 // get cluster and pointers on FBF chdev
479 xptr_t fbf_xp = chdev_dir.fbf[0];
480 cxy_t fbf_cxy = GET_CXY( fbf_xp );
481 chdev_t * fbf_ptr = GET_PTR( fbf_xp );
482
483 // build extended pointers on windows lock, and wid allocator
484 xptr_t windows_lock_xp = XPTR( fbf_cxy , &fbf_ptr->ext.fbf.windows_lock );
485 xptr_t wid_bitmap_xp = XPTR( fbf_cxy , fbf_ptr->ext.fbf.windows_bitmap );
486
487 // build extended pointer on relevant entry in windows_tbl[] array
488 xptr_t windows_tbl_xp = XPTR( fbf_cxy , &fbf_ptr->ext.fbf.windows_tbl[wid] );
489
490 // get extended pointer on remote window descriptor
491 xptr_t window_xp = hal_remote_l64( windows_tbl_xp );
492
493 if( window_xp == XPTR_NULL )
494 {
495 printk("\n[ERROR] in %s / thread[%x,%x] / wid %d non registered\n",
496 __FUNCTION__, process->pid, this->trdid, wid );
497 return -1;
498 }
499
500 // get cluster and local pointer on remote window
501 cxy_t window_cxy = GET_CXY( window_xp );
502 fbf_window_t * window_ptr = GET_PTR( window_xp );
503
504 // get process owner PID
505 pid_t owner_pid = hal_remote_l32( XPTR( window_cxy , &window_ptr->pid ) );
506
507 // check caller PID / owner PID
508 if( owner_pid != process->pid )
509 {
510 printk("\n[ERROR] in %s : caller PID (%x) != owner PID (%x)\n",
511 __FUNCTION__, process->pid , owner_pid );
512 return -1;
513 }
514
515 // get associated buffer, and number of lines
516 uint8_t * buffer = hal_remote_lpt( XPTR( window_cxy , &window_ptr->buffer ) );
517 uint32_t nlines = hal_remote_l32( XPTR( window_cxy , &window_ptr->height ) );
518
519 // 1. take the lock protecting windows in write mode
520 remote_rwlock_wr_acquire( windows_lock_xp );
521
522 // 2. update the FBF window
523 fbf_update( window_xp , 0 , nlines );
524
525 // 3. remove the window from windows_tbl[] array
526 hal_remote_s64( windows_tbl_xp , XPTR_NULL );
527
528 // 4. remove the window from xlist
529 xlist_unlink( XPTR( window_cxy , &window_ptr->xlist ) );
530
531 // 5. release wid to bitmap
532 bitmap_remote_clear( wid_bitmap_xp , wid );
533
534 // 6. release the lock protecting windows in write mode
535 remote_rwlock_wr_release( windows_lock_xp );
536
537 // 7. release memory allocated for window descriptor
538 req.type = KMEM_KCM;
539 req.ptr = window_ptr;
540 kmem_remote_free( window_cxy , &req );
541
542 // 8. release the associated vseg
543 vmm_global_delete_vseg( process , (intptr_t)buffer );
544
545#if DEBUG_DEV_FBF
546cycle = (uint32_t)hal_get_cycles();
547if( DEBUG_DEV_FBF < cycle )
548printk("\n[%s] thread[%x,%x] exit / cycle %d\n",
549__FUNCTION__ , process->pid, this->trdid, cycle );
550#endif
551
552 return 0;
553
554} // end dev_fbf_delete_window()
555
556////////////////////////////////////////////
557error_t dev_fbf_move_window( uint32_t wid,
558 uint32_t l_min,
559 uint32_t p_min )
560{
561 thread_t * this = CURRENT_THREAD;
562 process_t * process = this->process;
563
564#if DEBUG_DEV_FBF
565uint32_t cycle = (uint32_t)hal_get_cycles();
566if( DEBUG_DEV_FBF < cycle )
567printk("\n[%s] thread[%x,%x] enters : wid %d / l_min %d / p_min %d / cycle %d\n",
568__FUNCTION__ , process->pid, this->trdid, wid, l_min, p_min, cycle );
569#endif
570
571 // get cluster and pointers on FBF chdev
572 xptr_t fbf_xp = chdev_dir.fbf[0];
573 cxy_t fbf_cxy = GET_CXY( fbf_xp );
574 chdev_t * fbf_ptr = GET_PTR( fbf_xp );
575
576 // build extended pointers on windows lock and root
577 xptr_t windows_lock_xp = XPTR( fbf_cxy , &fbf_ptr->ext.fbf.windows_lock );
578 xptr_t windows_root_xp = XPTR( fbf_cxy , &fbf_ptr->ext.fbf.windows_root );
579
580 // build extended pointer on relevant entry in windows_tbl[] array
581 xptr_t windows_tbl_xp = XPTR( fbf_cxy , &fbf_ptr->ext.fbf.windows_tbl[wid] );
582
583 // get extended pointer on remote window descriptor
584 xptr_t window_xp = hal_remote_l64( windows_tbl_xp );
585
586 if( window_xp == XPTR_NULL )
587 {
588 printk("\n[ERROR] in %s / thread[%x,%x] / wid %d non registered\n",
589 __FUNCTION__, process->pid, this->trdid, wid );
590 return -1;
591 }
592
593 // get cluster and local pointer for remote window
594 cxy_t window_cxy = GET_CXY( window_xp );
595 fbf_window_t * window_ptr = GET_PTR( window_xp );
596
597 // get process owner PID, coordinates, and number of lines
598 pid_t owner_pid = hal_remote_l32( XPTR( window_cxy , &window_ptr->pid ) );
599 uint32_t p_zero = hal_remote_l32( XPTR( window_cxy , &window_ptr->p_min ) );
600 uint32_t l_zero = hal_remote_l32( XPTR( window_cxy , &window_ptr->l_min ) );
601 uint32_t nlines = hal_remote_l32( XPTR( window_cxy , &window_ptr->height ) );
602
603 // check caller PID / owner PID
604 if( owner_pid != process->pid )
605 {
606 printk("\n[ERROR] in %s : caller PID (%x) != owner PID (%x)\n",
607 __FUNCTION__, process->pid , owner_pid );
608 return -1;
609 }
610
611 // does nothing if no change
612 if( (p_zero == p_min) && (l_zero == l_min) ) return 0;
613
614 // 1. take the lock protecting windows in write mode
615 remote_rwlock_wr_acquire( windows_lock_xp );
616
617#if ( DEBUG_DEV_FBF & 1 )
618printk("\n[%s] lock taken\n", __FUNCTION__ );
619#endif
620
621 // 2. gives the window the lowest priority
622 xptr_t xlist_entry_xp = XPTR( window_cxy , &window_ptr->xlist );
623 xlist_unlink( xlist_entry_xp );
624 xlist_add_first( windows_root_xp , xlist_entry_xp );
625
626#if ( DEBUG_DEV_FBF & 1 )
627printk("\n[%s] set low priority \n", __FUNCTION__ );
628#endif
629
630 // 3. set the "hidden" flag in window descriptor
631 hal_remote_s32( XPTR( window_cxy , &window_ptr->hidden ) , true );
632
633#if ( DEBUG_DEV_FBF & 1 )
634printk("\n[%s] hidden set\n", __FUNCTION__ );
635#endif
636
637 // 4. refresh the FBF for the current window position
638 fbf_update( window_xp , 0 , nlines );
639
640#if ( DEBUG_DEV_FBF & 1 )
641printk("\n[%s] refreshed old position\n", __FUNCTION__ );
642#endif
643
644 // 5. set the new coordinates in the window descriptor,
645 hal_remote_s32( XPTR( window_cxy , &window_ptr->l_min ), l_min );
646 hal_remote_s32( XPTR( window_cxy , &window_ptr->p_min ), p_min );
647
648#if ( DEBUG_DEV_FBF & 1 )
649printk("\n[%s] l_min & p_min updated\n", __FUNCTION__ );
650#endif
651
652 // 6. gives the window the highest priority
653 xlist_unlink( xlist_entry_xp );
654 xlist_add_last( windows_root_xp , xlist_entry_xp );
655
656#if ( DEBUG_DEV_FBF & 1 )
657printk("\n[%s] set high priority\n", __FUNCTION__ );
658#endif
659
660 // 7. reset the "hidden" flag in window descriptor
661 hal_remote_s32( XPTR( window_cxy , &window_ptr->hidden ) , false );
662
663#if ( DEBUG_DEV_FBF & 1 )
664printk("\n[%s] hidden reset\n", __FUNCTION__ );
665#endif
666
667 // 8. refresh the FBF for the new window position
668 fbf_update( window_xp , 0 , nlines );
669
670#if ( DEBUG_DEV_FBF & 1 )
671printk("\n[%s] refresh new position\n", __FUNCTION__ );
672#endif
673
674 // 9. release the lock protecting windows in write mode
675 remote_rwlock_wr_release( windows_lock_xp );
676
677#if DEBUG_DEV_FBF
678cycle = (uint32_t)hal_get_cycles();
679if( DEBUG_DEV_FBF < cycle )
680printk("\n[%s] thread[%x,%x] exit / cycle %d\n",
681__FUNCTION__ , process->pid, this->trdid, cycle );
682#endif
683
684 return 0;
685
686} // end dev_fbf_move_window()
687
688/////////////////////////////////////////////
689error_t dev_fbf_resize_window( uint32_t wid,
690 uint32_t width,
691 uint32_t height )
692{
693 thread_t * this = CURRENT_THREAD;
694 process_t * process = this->process;
695
696#if DEBUG_DEV_FBF
697uint32_t cycle = (uint32_t)hal_get_cycles();
698if( DEBUG_DEV_FBF < cycle )
699printk("\n[%s] thread[%x,%x] enters : wid %d / width %d / height %d / cycle %d\n",
700__FUNCTION__ , process->pid , this->trdid , wid, width , height , cycle );
701#endif
702
703 // get cluster and pointers on FBF chdev
704 xptr_t fbf_xp = chdev_dir.fbf[0];
705 cxy_t fbf_cxy = GET_CXY( fbf_xp );
706 chdev_t * fbf_ptr = GET_PTR( fbf_xp );
707
708 // build extended pointers on windows lock and root
709 xptr_t windows_lock_xp = XPTR( fbf_cxy , &fbf_ptr->ext.fbf.windows_lock );
710 xptr_t windows_root_xp = XPTR( fbf_cxy , &fbf_ptr->ext.fbf.windows_root );
711
712 // build extended pointer on relevant entry in windows_tbl[] array
713 xptr_t windows_tbl_xp = XPTR( fbf_cxy , &fbf_ptr->ext.fbf.windows_tbl[wid] );
714
715 // get extended pointer on remote window descriptor
716 xptr_t window_xp = hal_remote_l64( windows_tbl_xp );
717
718 if( window_xp == XPTR_NULL )
719 {
720 printk("\n[ERROR] in %s / thread[%x,%x] / wid %d non registered\n",
721 __FUNCTION__, process->pid, this->trdid, wid );
722 return -1;
723 }
724
725 // get cluster and local pointer for remote window
726 cxy_t window_cxy = GET_CXY( window_xp );
727 fbf_window_t * window_ptr = GET_PTR( window_xp );
728
729 // get process owner PID, width, height, and buffer
730 pid_t owner_pid = hal_remote_l32( XPTR( window_cxy , &window_ptr->pid ) );
731 uint32_t nlines = hal_remote_l32( XPTR( window_cxy , &window_ptr->height ) );
732 uint32_t npixels = hal_remote_l32( XPTR( window_cxy , &window_ptr->width ) );
733 void * base = hal_remote_lpt( XPTR( window_cxy , &window_ptr->buffer ) );
734
735 // check caller PID / owner PID
736 if( owner_pid != process->pid )
737 {
738 printk("\n[ERROR] in %s : caller PID (%x) != owner PID (%x)\n",
739 __FUNCTION__, process->pid , owner_pid );
740 return -1;
741 }
742
743 // does nothing if no change
744 if( (width == npixels) && (height == nlines) ) return 0;
745
746 // compute old_size and new size
747 uint32_t old_size = nlines * npixels;
748 uint32_t new_size = width * height;
749
750 // 1. take the lock protecting windows in write mode
751 remote_rwlock_wr_acquire( windows_lock_xp );
752
753#if ( DEBUG_DEV_FBF & 1 )
754printk("\n[%s] lock taken\n", __FUNCTION__ );
755#endif
756
757 // 2. gives the window the lowest priority (remove, then add first)
758 xptr_t xlist_entry_xp = XPTR( window_cxy , &window_ptr->xlist );
759 xlist_unlink( xlist_entry_xp );
760 xlist_add_first( windows_root_xp , xlist_entry_xp );
761
762#if ( DEBUG_DEV_FBF & 1 )
763printk("\n[%s] set low priority\n", __FUNCTION__ );
764#endif
765
766 // 3. set the "hidden" flag in window descriptor
767 hal_remote_s32( XPTR( window_cxy , &window_ptr->hidden ) , true );
768
769#if ( DEBUG_DEV_FBF & 1 )
770printk("\n[%s] hidden set\n", __FUNCTION__ );
771#endif
772
773 // 4. refresh the FBF for the current window size
774 fbf_update( window_xp , 0 , nlines );
775
776#if ( DEBUG_DEV_FBF & 1 )
777printk("\n[%s] refreshed old window\n", __FUNCTION__ );
778#endif
779
780 // 5. set the new width & height in the window descriptor,
781 hal_remote_s32( XPTR( window_cxy , &window_ptr->width ), width );
782 hal_remote_s32( XPTR( window_cxy , &window_ptr->height ), height );
783
784#if ( DEBUG_DEV_FBF & 1 )
785printk("\n[%s] width & height updated\n", __FUNCTION__ );
786#endif
787
788 // 6. resize vseg if required
789 vmm_global_resize_vseg( process, (intptr_t)base, (intptr_t)base, width * height );
790
791#if ( DEBUG_DEV_FBF & 1 )
792printk("\n[%s] vseg resized\n", __FUNCTION__ );
793#endif
794
795 // 7. fill buffer extension if required
796 if( new_size > old_size ) memset( base + old_size , 0 , new_size - old_size );
797
798#if ( DEBUG_DEV_FBF & 1 )
799printk("\n[%s] buffer extension initialized\n", __FUNCTION__ );
800#endif
801
802 // 8. gives the window the highest priority
803 xlist_unlink( xlist_entry_xp );
804 xlist_add_last( windows_root_xp , xlist_entry_xp );
805
806#if ( DEBUG_DEV_FBF & 1 )
807printk("\n[%s] set high priority\n", __FUNCTION__ );
808#endif
809
810 // 9. reset the "hidden" flag in window descriptor
811 hal_remote_s32( XPTR( window_cxy , &window_ptr->hidden ) , false );
812
813#if ( DEBUG_DEV_FBF & 1 )
814printk("\n[%s] hidden reset\n", __FUNCTION__ );
815#endif
816
817 // 10. refresh the FBF for the new window position
818 fbf_update( window_xp , 0 , height );
819
820#if ( DEBUG_DEV_FBF & 1 )
821printk("\n[%s] refresh new position\n", __FUNCTION__ );
822#endif
823
824 // 11. release the lock protecting windows in write mode
825 remote_rwlock_wr_release( windows_lock_xp );
826
827#if DEBUG_DEV_FBF
828cycle = (uint32_t)hal_get_cycles();
829if( DEBUG_DEV_FBF < cycle )
830printk("\n[%s] thread[%x,%x] exit / cycle %d\n",
831__FUNCTION__ , process->pid, this->trdid, cycle );
832#endif
833
834 return 0;
835
836} // end dev_fbf_resize_window()
837
838///////////////////////////////////////////////
839error_t dev_fbf_refresh_window( uint32_t wid,
840 uint32_t line_first,
841 uint32_t line_last )
842{
843 // get local pointers on calling thread and process
844 thread_t * this = CURRENT_THREAD;
845 process_t * process = this->process;
846
847#if DEBUG_DEV_FBF
848uint32_t cycle = (uint32_t)hal_get_cycles();
849if( DEBUG_DEV_FBF < cycle )
850printk("\n[%s] thread[%x,%x] enters for wid %d / first %d / last %d / cycle %d\n",
851__FUNCTION__ , process->pid, this->trdid, wid, line_first, line_last, cycle );
852#endif
853
854 // get cluster and pointers on FBF chdev
855 xptr_t fbf_xp = chdev_dir.fbf[0];
856 cxy_t fbf_cxy = GET_CXY( fbf_xp );
857 chdev_t * fbf_ptr = GET_PTR( fbf_xp );
858
859 // build extended pointer on windows lock
860 xptr_t windows_lock_xp = XPTR( fbf_cxy , &fbf_ptr->ext.fbf.windows_lock );
861
862 // build extended pointer on relevant entry in windows_tbl[] array
863 xptr_t windows_tbl_xp = XPTR( fbf_cxy , &fbf_ptr->ext.fbf.windows_tbl[wid] );
864
865 // get pointers on remote window descriptor
866 xptr_t window_xp = hal_remote_l64( windows_tbl_xp );
867 cxy_t window_cxy = GET_CXY( window_xp );
868 fbf_window_t * window_ptr = GET_PTR( window_xp );
869
870 // check <wid> argument
871 if( window_xp == XPTR_NULL )
872 {
873 printk("\n[ERROR] in %s / thread[%x,%x] / wid %d non registered\n",
874 __FUNCTION__, process->pid, this->trdid, wid );
875 return -1;
876 }
877
878 // get process owner PID
879 pid_t owner_pid = hal_remote_l32( XPTR( window_cxy , &window_ptr->pid ) );
880
881 // check caller PID / owner PID
882 if( owner_pid != process->pid )
883 {
884 printk("\n[ERROR] in %s : caller PID (%x) != owner PID (%x)\n",
885 __FUNCTION__, process->pid , owner_pid );
886 return -1;
887 }
888
889 // get number of lines in window
890 uint32_t nlines = hal_remote_l32( XPTR( window_cxy , &window_ptr->height ) );
891
892 // check <line_first> and <line_last> arguments
893 if( (line_first >= nlines) || (line_last > nlines) || (line_first >= line_last) )
894 {
895 printk("\n[ERROR] in %s : illegal (l_first %d , l_last %d) / height %d\n",
896 __FUNCTION__, line_first, line_last, nlines );
897 return -1;
898 }
899
900 // take the lock protecting windows xlist in read mode
901 remote_rwlock_rd_acquire( windows_lock_xp );
902
903 // update FBF
904 fbf_update( window_xp , line_first , line_last );
905
906 // release the lock protecting windows xlist in write mode
907 remote_rwlock_rd_release( windows_lock_xp );
908
909#if DEBUG_DEV_FBF
910cycle = (uint32_t)hal_get_cycles();
911if( DEBUG_DEV_FBF < cycle )
912printk("\n[%s] thread[%x,%x] exit for wid %d / cycle %d\n",
913__FUNCTION__, process->pid, this->trdid, wid, cycle );
914#endif
915
916 return 0;
917
918} // end dev_fbf_refresh_window()
919
920///////////////////////////////////////////////
921// TODO Deprecated : january 2020 [AG]
922///////////////////////////////////////////////
923error_t dev_fbf_move_data( bool_t is_write,
924 void * user_buffer,
925 uint32_t npixels,
926 uint32_t offset )
927{
928 // get pointer on calling thread
929 thread_t * this = CURRENT_THREAD;
930
931#if DEBUG_DEV_FBF
932uint32_t cycle = (uint32_t)hal_get_cycles();
933if( DEBUG_DEV_FBF < cycle )
934printk("\n[%s] thread[%x,%x] : buffer %x / npixels %d / offset %x / cycle %d\n",
935__FUNCTION__ , this->process->pid, this->trdid,
936user_buffer, npixels, offset, cycle );
937#endif
938
939 // get pointers on FBF chdev
940 xptr_t fbf_xp = chdev_dir.fbf[0];
941 cxy_t fbf_cxy = GET_CXY( fbf_xp );
942 chdev_t * fbf_ptr = GET_PTR( fbf_xp );
943
944 // get frame buffer width and height
945 uint32_t width = hal_remote_l32 ( XPTR( fbf_cxy , &fbf_ptr->ext.fbf.width ) );
946 uint32_t height = hal_remote_l32 ( XPTR( fbf_cxy , &fbf_ptr->ext.fbf.height ) );
947
948 // check offset and npixels versus FBF size
949 if( ((offset + npixels) > (width * height)) )
950 {
951 printk("\n[ERROR] in %s : offset (%d) + npixels (%d) / width (%d) / height (%d)\n",
952 __FUNCTION__, offset, npixels, width, height );
953 return -1;
954 }
955
956 // register command in calling thread descriptor
957 this->fbf_cmd.dev_xp = fbf_xp;
958 this->fbf_cmd.type = is_write ? FBF_DRIVER_USER_WRITE : FBF_DRIVER_USER_READ;
959 this->fbf_cmd.buffer = user_buffer;
960 this->fbf_cmd.offset = offset;
961 this->fbf_cmd.npixels = npixels;
962
963 // get driver command function
964 dev_cmd_t * cmd = (dev_cmd_t *)hal_remote_lpt( XPTR( fbf_cxy , &fbf_ptr->cmd ) );
965
966 // call driver
967 cmd( XPTR( local_cxy , this ) );
968
969 error_t error = this->fbf_cmd.error;
970
971#if DEBUG_DEV_FBF
972cycle = (uint32_t)hal_get_cycles();
973if( DEBUG_DEV_FBF < cycle )
974printk("\n[%s] thread[%x,%x] exit / cycle %d\n",
975__FUNCTION__ , this->process->pid, this->trdid, cycle );
976#endif
977
978 // return I/O operation status
979 return error;
980
981} // end dev_fbf_move_data()
982
983
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