Context Navigation

source: soft/giet_vm/giet_kernel/sys_handler.c @ 698

Last change on this file since 698 was 698, checked in by guerin, 9 years ago

kernel: use non-trivial TTY allocator

Now, TTY channels can be released in non-order. Also fix a few corner
cases with shared allocation.

Property svn:executable set to *

File size: 76.9 KB

Line
1	///////////////////////////////////////////////////////////////////////////////////
2	// File : sys_handler.c
3	// Date : 01/04/2012
4	// Author : alain greiner and joel porquet
5	// Copyright (c) UPMC-LIP6
6	///////////////////////////////////////////////////////////////////////////////////
7
8	#include <sys_handler.h>
9	#include <tty_driver.h>
10	#include <tim_driver.h>
11	#include <nic_driver.h>
12	#include <mmc_driver.h>
13	#include <mwr_driver.h>
14	#include <cma_driver.h>
15	#include <ctx_handler.h>
16	#include <fat32.h>
17	#include <utils.h>
18	#include <kernel_malloc.h>
19	#include <tty0.h>
20	#include <vmem.h>
21	#include <hard_config.h>
22	#include <giet_config.h>
23	#include <mapping_info.h>
24	#include <irq_handler.h>
25	#include <io.h>
26
27	#if !defined(SEG_BOOT_MAPPING_BASE)
28	# error: You must define SEG_BOOT_MAPPING_BASE in the hard_config.h file
29	#endif
30
31	#if !defined(NB_TTY_CHANNELS)
32	# error: You must define NB_TTY_CHANNELS in the hard_config.h file
33	#endif
34
35	#if (NB_TTY_CHANNELS < 1)
36	# error: NB_TTY_CHANNELS cannot be smaller than 1!
37	#endif
38
39	#if !defined(NB_TIM_CHANNELS)
40	# error: You must define NB_TIM_CHANNELS in the hard_config.h file
41	#endif
42
43	#if !defined(NB_NIC_CHANNELS)
44	# error: You must define NB_NIC_CHANNELS in the hard_config.h file
45	#endif
46
47	#if !defined(NB_CMA_CHANNELS)
48	# error: You must define NB_CMA_CHANNELS in the hard_config.h file
49	#endif
50
51	#if !defined(GIET_NO_HARD_CC)
52	# error: You must define GIET_NO_HARD_CC in the giet_config.h file
53	#endif
54
55	#if !defined ( GIET_NIC_MAC4 )
56	# error: You must define GIET_NIC_MAC4 in the giet_config.h file
57	#endif
58
59	#if !defined ( GIET_NIC_MAC2 )
60	# error: You must define GIET_NIC_MAC2 in the giet_config.h file
61	#endif
62
63	////////////////////////////////////////////////////////////////////////////
64	// Extern variables
65	////////////////////////////////////////////////////////////////////////////
66
67	// allocated in tty0.c file.
68	extern sqt_lock_t _tty0_sqt_lock;
69
70	// allocated in mwr_driver.c file.
71	extern simple_lock_t _coproc_lock[X_SIZE*Y_SIZE];
72	extern unsigned int _coproc_type[X_SIZE*Y_SIZE];
73	extern unsigned int _coproc_info[X_SIZE*Y_SIZE];
74	extern unsigned int _coproc_mode[X_SIZE*Y_SIZE];
75	extern unsigned int _coproc_error[X_SIZE*Y_SIZE];
76	extern unsigned int _coproc_gtid[X_SIZE*Y_SIZE];
77
78
79	// allocated in tty_driver.c file.
80	extern unsigned int _tty_rx_full[NB_TTY_CHANNELS];
81	extern unsigned int _tty_rx_buf[NB_TTY_CHANNELS];
82
83	// allocated in kernel_init.c file
84	extern static_scheduler_t* _schedulers[X_SIZE][Y_SIZE][NB_PROCS_MAX];
85
86	////////////////////////////////////////////////////////////////////////////
87	// Channel allocators for peripherals
88	// (TTY[0] is reserved for kernel)
89	////////////////////////////////////////////////////////////////////////////
90
91	__attribute__((section(".kdata")))
92	unsigned int _tty_channel[NB_TTY_CHANNELS] = {1};
93
94	__attribute__((section(".kdata")))
95	unsigned int _tim_channel_allocator = 0;
96
97	__attribute__((section(".kdata")))
98	unsigned int _cma_channel_allocator = 0;
99
100	__attribute__((section(".kdata")))
101	unsigned int _nic_rx_channel_allocator = 0;
102
103	__attribute__((section(".kdata")))
104	unsigned int _nic_tx_channel_allocator = 0;
105
106	////////////////////////////////////////////////////////////////////////////
107	// NIC_RX and NIC_TX kernel chbuf arrays
108	////////////////////////////////////////////////////////////////////////////
109
110	__attribute__((section(".kdata")))
111	ker_chbuf_t _nic_ker_rx_chbuf[NB_NIC_CHANNELS] __attribute__((aligned(64)));
112
113	__attribute__((section(".kdata")))
114	ker_chbuf_t _nic_ker_tx_chbuf[NB_NIC_CHANNELS] __attribute__((aligned(64)));
115
116	////////////////////////////////////////////////////////////////////////////
117	// FBF related chbuf descriptors array, indexed by the CMA channel index.
118	// Physical addresses of these chbuf descriptors required for L2 cache sync.
119	// FBF status
120	////////////////////////////////////////////////////////////////////////////
121
122	__attribute__((section(".kdata")))
123	fbf_chbuf_t _fbf_chbuf[NB_CMA_CHANNELS] __attribute__((aligned(64)));
124
125	__attribute__((section(".kdata")))
126	unsigned long long _fbf_chbuf_paddr[NB_CMA_CHANNELS];
127
128	__attribute__((section(".kdata")))
129	buffer_status_t _fbf_status[NB_CMA_CHANNELS] __attribute__((aligned(64)));
130
131	////////////////////////////////////////////////////////////////////////////
132	// Initialize the syscall vector with syscall handlers
133	// Note: This array must be synchronised with the define in file stdio.h
134	////////////////////////////////////////////////////////////////////////////
135
136	__attribute__((section(".kdata")))
137	const void * _syscall_vector[64] =
138	{
139	&_sys_proc_xyp, /* 0x00 */
140	&_get_proctime, /* 0x01 */
141	&_sys_tty_write, /* 0x02 */
142	&_sys_tty_read, /* 0x03 */
143	&_sys_tty_alloc, /* 0x04 */
144	&_sys_tasks_status, /* 0x05 */
145	&_sys_ukn, /* 0x06 */
146	&_sys_heap_info, /* 0x07 */
147	&_sys_local_task_id, /* 0x08 */
148	&_sys_global_task_id, /* 0x09 */
149	&_sys_fbf_cma_alloc, /* 0x0A */
150	&_sys_fbf_cma_init_buf, /* 0x0B */
151	&_sys_fbf_cma_start, /* 0x0C */
152	&_sys_fbf_cma_display, /* 0x0D */
153	&_sys_fbf_cma_stop, /* 0x0E */
154	&_sys_task_exit, /* 0x0F */
155
156	&_sys_procs_number, /* 0x10 */
157	&_sys_fbf_sync_write, /* 0x11 */
158	&_sys_fbf_sync_read, /* 0x12 */
159	&_sys_thread_id, /* 0x13 */
160	&_sys_tim_alloc, /* 0x14 */
161	&_sys_tim_start, /* 0x15 */
162	&_sys_tim_stop, /* 0x16 */
163	&_sys_kill_application, /* 0x17 */
164	&_sys_exec_application, /* 0x18 */
165	&_sys_context_switch, /* 0x19 */
166	&_sys_vseg_get_vbase, /* 0x1A */
167	&_sys_vseg_get_length, /* 0x1B */
168	&_sys_xy_from_ptr, /* 0x1C */
169	&_sys_ukn, /* 0x1D */
170	&_sys_ukn, /* 0x1E */
171	&_sys_ukn, /* 0x1F */
172
173	&_fat_open, /* 0x20 */
174	&_fat_read, /* 0x21 */
175	&_fat_write, /* 0x22 */
176	&_fat_lseek, /* 0x23 */
177	&_fat_file_info, /* 0x24 */
178	&_fat_close, /* 0x25 */
179	&_fat_remove, /* 0x26 */
180	&_fat_rename, /* 0x27 */
181	&_fat_mkdir, /* 0x28 */
182	&_fat_opendir, /* 0x29 */
183	&_fat_closedir, /* 0x2A */
184	&_fat_readdir, /* 0x2B */
185	&_sys_ukn, /* 0x2C */
186	&_sys_ukn, /* 0x2D */
187	&_sys_ukn, /* 0x2E */
188	&_sys_ukn, /* 0x2F */
189
190	&_sys_nic_alloc, /* 0x30 */
191	&_sys_nic_start, /* 0x31 */
192	&_sys_nic_move, /* 0x32 */
193	&_sys_nic_stop, /* 0x33 */
194	&_sys_nic_stats, /* 0x34 */
195	&_sys_nic_clear, /* 0x35 */
196	&_sys_ukn, /* 0x36 */
197	&_sys_ukn, /* 0x37 */
198	&_sys_ukn, /* 0x38 */
199	&_sys_ukn, /* 0x39 */
200	&_sys_ukn, /* 0x3A */
201	&_sys_coproc_completed, /* 0x3B */
202	&_sys_coproc_alloc, /* 0x3C */
203	&_sys_coproc_channel_init, /* 0x3D */
204	&_sys_coproc_run, /* 0x3E */
205	&_sys_coproc_release, /* 0x3F */
206	};
207
208
209	//////////////////////////////////////////////////////////////////////////////
210	// Applications related syscall handlers
211	//////////////////////////////////////////////////////////////////////////////
212
213	///////////////////////////////////////
214	int _sys_kill_application( char* name )
215	{
216	mapping_header_t * header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
217	mapping_vspace_t * vspace = _get_vspace_base(header);
218	mapping_task_t * task = _get_task_base(header);
219
220	unsigned int vspace_id;
221	unsigned int task_id;
222	unsigned int y_size = header->y_size;
223
224	#if GIET_DEBUG_EXEC
225	if ( _get_proctime() > GIET_DEBUG_EXEC )
226	_printf("\n[DEBUG EXEC] enters _sys_kill_application() for %s\n", name );
227	#endif
228
229	// scan vspaces
230	for (vspace_id = 0; vspace_id < header->vspaces; vspace_id++)
231	{
232	if ( _strcmp( vspace[vspace_id].name, name ) == 0 )
233	{
234	// check if application can be killed
235	if ( vspace[vspace_id].active ) return -2;
236
237	// scan tasks in vspace
238	for (task_id = vspace[vspace_id].task_offset;
239	task_id < (vspace[vspace_id].task_offset + vspace[vspace_id].tasks);
240	task_id++)
241	{
242	unsigned int cid = task[task_id].clusterid;
243	unsigned int x = cid / y_size;
244	unsigned int y = cid % y_size;
245	unsigned int p = task[task_id].proclocid;
246	unsigned int ltid = task[task_id].ltid;
247
248	// get scheduler pointer for processor running the task
249	static_scheduler_t* psched = (static_scheduler_t*)_schedulers[x][y][p];
250
251	// set KILL signal bit
252	_atomic_or( &psched->context[ltid][CTX_SIG_ID] , SIG_MASK_KILL );
253	}
254
255	#if GIET_DEBUG_EXEC
256	if ( _get_proctime() > GIET_DEBUG_EXEC )
257	_printf("\n[DEBUG EXEC] exit _sys_kill_application() : %s will be killed\n", name );
258	#endif
259
260	return 0;
261	}
262	}
263
264	#if GIET_DEBUG_EXEC
265	if ( _get_proctime() > GIET_DEBUG_EXEC )
266	_printf("\n[DEBUG EXEC] exit _sys_kill_application() : %s not found\n", name );
267	#endif
268
269	return -1; // not found
270
271	} // end _sys_kill_application()
272
273	///////////////////////////////////////
274	int _sys_exec_application( char* name )
275	{
276	mapping_header_t * header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
277	mapping_vspace_t * vspace = _get_vspace_base(header);
278	mapping_task_t * task = _get_task_base(header);
279
280	unsigned int vspace_id;
281	unsigned int task_id;
282	unsigned int y_size = header->y_size;
283
284	#if GIET_DEBUG_EXEC
285	if ( _get_proctime() > GIET_DEBUG_EXEC )
286	_printf("\n[DEBUG EXEC] enters _sys_exec_application() at cycle %d for %s\n",
287	_get_proctime() , name );
288	#endif
289
290	// scan vspaces
291	for (vspace_id = 0 ; vspace_id < header->vspaces ; vspace_id++)
292	{
293	if ( _strcmp( vspace[vspace_id].name, name ) == 0 )
294	{
295	// scan tasks in vspace
296	for (task_id = vspace[vspace_id].task_offset;
297	task_id < (vspace[vspace_id].task_offset + vspace[vspace_id].tasks);
298	task_id++)
299	{
300	unsigned int cid = task[task_id].clusterid;
301	unsigned int x = cid / y_size;
302	unsigned int y = cid % y_size;
303	unsigned int p = task[task_id].proclocid;
304	unsigned int ltid = task[task_id].ltid;
305
306	// get scheduler pointer for processor running the task
307	static_scheduler_t* psched = (static_scheduler_t*)_schedulers[x][y][p];
308
309	// set EXEC signal bit
310	_atomic_or( &psched->context[ltid][CTX_SIG_ID] , SIG_MASK_EXEC );
311	}
312
313	#if GIET_DEBUG_EXEC
314	if ( _get_proctime() > GIET_DEBUG_EXEC )
315	_printf("\n[DEBUG EXEC] exit _sys_exec_application() at cycle %d : %s will be executed\n",
316	_get_proctime() , name );
317	#endif
318
319	return 0; // application found and activated
320	}
321	}
322
323	#if GIET_DEBUG_EXEC
324	if ( _get_proctime() > GIET_DEBUG_EXEC )
325	_printf("\n[DEBUG EXEC] exit _sys_exec_application() at cycle %d : %s not found\n",
326	_get_proctime() , name );
327	#endif
328
329	return -1; // not found
330
331	} // end _sys_exec_application()
332
333
334	//////////////////////////////////////////////////////////////////////////////
335	// Coprocessors related syscall handlers
336	//////////////////////////////////////////////////////////////////////////////
337
338	//////////////////////////////////////////////////
339	int _sys_coproc_alloc( unsigned int coproc_type,
340	unsigned int* coproc_info )
341	{
342	// In this implementation, the allocation policy is constrained:
343	// the coprocessor must be in the same cluster as the calling task,
344	// and there is at most one coprocessor per cluster
345
346	mapping_header_t * header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
347	mapping_cluster_t * cluster = _get_cluster_base(header);
348	mapping_periph_t * periph = _get_periph_base(header);
349
350	// get cluster coordinates and cluster global index
351	unsigned int procid = _get_procid();
352	unsigned int x = procid >> (Y_WIDTH + P_WIDTH);
353	unsigned int y = (procid >> P_WIDTH) & ((1<<Y_WIDTH)-1);
354	unsigned int cluster_id = x * Y_SIZE + y;
355
356	// search coprocessor in cluster
357	mapping_periph_t* found = NULL;
358	unsigned int min = cluster[cluster_id].periph_offset;
359	unsigned int max = min + cluster[cluster_id].periphs;
360	unsigned int periph_id;
361	for ( periph_id = min ; periph_id < max ; periph_id++ )
362	{
363	if ( (periph[periph_id].type == PERIPH_TYPE_MWR) &&
364	(periph[periph_id].subtype == coproc_type) )
365	{
366	found = &periph[periph_id];
367	break;
368	}
369	}
370
371	if ( found != NULL )
372	{
373	// get the lock (at most one coproc per cluster)
374	_simple_lock_acquire( &_coproc_lock[cluster_id] );
375
376	// register coproc characteristics in kernel arrays
377	_coproc_type[cluster_id] = coproc_type;
378	_coproc_info[cluster_id] = (found->arg0 & 0xFF) \|
379	(found->arg1 & 0xFF)<<8 \|
380	(found->arg2 & 0xFF)<<16 \|
381	(found->arg3 & 0xFF)<<24 ;
382
383	// returns coprocessor info
384	*coproc_info = _coproc_info[cluster_id];
385
386	// register coprocessor coordinates in task context
387	unsigned int cluster_xy = (x<<Y_WIDTH) + y;
388	_set_context_slot( CTX_COPROC_ID , cluster_xy );
389
390	#if GIET_DEBUG_COPROC
391	_printf("\n[GIET DEBUG COPROC] _sys_coproc_alloc() in cluster[%d,%d]\n"
392	" coproc_info = %x / cluster_xy = %x\n",
393	x , y , *coproc_info , cluster_xy );
394	#endif
395	return 0;
396	}
397	else
398	{
399	_printf("\n[GIET_ERROR] in _sys_coproc_alloc(): no coprocessor "
400	" with type %d available in cluster[%d,%d]\n",
401	coproc_type , x , y );
402	return -1;
403	}
404	} // end _sys_coproc_alloc()
405
406	////////////////////////////////////////////////////////
407	int _sys_coproc_release( unsigned int coproc_reg_index )
408	{
409	// processor coordinates
410	unsigned int procid = _get_procid();
411	unsigned int x = procid >> (Y_WIDTH + P_WIDTH);
412	unsigned int y = (procid >> P_WIDTH) & ((1<<Y_WIDTH)-1);
413	unsigned int p = procid & ((1<<P_WIDTH)-1);
414
415	// get coprocessor coordinates
416	unsigned int cluster_xy = _get_context_slot( CTX_COPROC_ID );
417	if ( cluster_xy > 0xFF )
418	{
419	_printf("\n[GIET_ERROR] in _sys_coproc_release(): "
420	"no coprocessor allocated to task running on P[%d,%d,%d]\n",
421	x , y , p );
422	return -1;
423	}
424
425	unsigned int cx = cluster_xy >> Y_WIDTH;
426	unsigned int cy = cluster_xy & ((1<<Y_WIDTH)-1);
427	unsigned int cluster_id = cx * Y_SIZE + cy;
428	unsigned int info = _coproc_info[cluster_id];
429	unsigned int nb_to = info & 0xFF;
430	unsigned int nb_from = (info>>8) & 0xFF;
431	unsigned int channel;
432
433	// stops coprocessor and communication channels
434	_mwr_set_coproc_register( cluster_xy , coproc_reg_index , 0 );
435	for ( channel = 0 ; channel < (nb_from + nb_to) ; channel++ )
436	{
437	_mwr_set_channel_register( cluster_xy , channel , MWR_CHANNEL_RUNNING , 0 );
438	}
439
440	// deallocates coprocessor coordinates in task context
441	_set_context_slot( CTX_COPROC_ID , 0xFFFFFFFF );
442
443	// release coprocessor lock
444	_simple_lock_release( &_coproc_lock[cluster_id] );
445
446	#if GIET_DEBUG_COPROC
447	_printf("\n[GIET DEBUG COPROC] _sys_coproc_release() in cluster[%d,%d]\n",
448	cx, cy );
449	#endif
450
451	return 0;
452	} // end _sys_coproc_release()
453
454	//////////////////////////////////////////////////////////////
455	int _sys_coproc_channel_init( unsigned int channel,
456	giet_coproc_channel_t* desc )
457	{
458	// processor coordinates
459	unsigned int procid = _get_procid();
460	unsigned int x = procid >> (Y_WIDTH + P_WIDTH);
461	unsigned int y = (procid >> P_WIDTH) & ((1<<Y_WIDTH)-1);
462	unsigned int p = procid & ((1<<P_WIDTH)-1);
463
464	// get coprocessor coordinates
465	unsigned int cluster_xy = _get_context_slot( CTX_COPROC_ID );
466	if ( cluster_xy > 0xFF )
467	{
468	_printf("\n[GIET_ERROR] in _sys_coproc_channel_init(): "
469	"no coprocessor allocated to task running on P[%d,%d,%d]\n",
470	x , y , p );
471	return -1;
472	}
473
474	// check channel mode
475	unsigned mode = desc->channel_mode;
476	if ( (mode != MODE_MWMR) &&
477	(mode != MODE_DMA_IRQ) &&
478	(mode != MODE_DMA_NO_IRQ) )
479	{
480	_printf("\n[GIET_ERROR] in _sys_coproc_channel_init(): "
481	" illegal mode\n");
482	return -1;
483	}
484
485	// get memory buffer size
486	unsigned int size = desc->buffer_size;
487
488	// physical addresses
489	unsigned long long buffer_paddr;
490	unsigned int buffer_lsb;
491	unsigned int buffer_msb;
492	unsigned long long mwmr_paddr = 0;
493	unsigned int mwmr_lsb;
494	unsigned int mwmr_msb;
495	unsigned long long lock_paddr = 0;
496	unsigned int lock_lsb;
497	unsigned int lock_msb;
498
499	unsigned int flags; // unused
500
501	// compute memory buffer physical address
502	buffer_paddr = _v2p_translate( desc->buffer_vaddr , &flags );
503	buffer_lsb = (unsigned int)buffer_paddr;
504	buffer_msb = (unsigned int)(buffer_paddr>>32);
505
506	// call MWMR_DMA driver
507	_mwr_set_channel_register( cluster_xy, channel, MWR_CHANNEL_MODE, mode );
508	_mwr_set_channel_register( cluster_xy, channel, MWR_CHANNEL_SIZE, size );
509	_mwr_set_channel_register( cluster_xy, channel, MWR_CHANNEL_BUFFER_LSB, buffer_lsb );
510	_mwr_set_channel_register( cluster_xy, channel, MWR_CHANNEL_BUFFER_MSB, buffer_msb );
511
512	if ( mode == MODE_MWMR )
513	{
514	// compute MWMR descriptor physical address
515	mwmr_paddr = _v2p_translate( desc->mwmr_vaddr , &flags );
516	mwmr_lsb = (unsigned int)mwmr_paddr;
517	mwmr_msb = (unsigned int)(mwmr_paddr>>32);
518
519	// call MWMR_DMA driver
520	_mwr_set_channel_register( cluster_xy, channel, MWR_CHANNEL_MWMR_LSB, mwmr_lsb );
521	_mwr_set_channel_register( cluster_xy, channel, MWR_CHANNEL_MWMR_MSB, mwmr_msb );
522
523	// compute lock physical address
524	lock_paddr = _v2p_translate( desc->lock_vaddr , &flags );
525	lock_lsb = (unsigned int)lock_paddr;
526	lock_msb = (unsigned int)(lock_paddr>>32);
527
528	// call MWMR_DMA driver
529	_mwr_set_channel_register( cluster_xy, channel, MWR_CHANNEL_LOCK_LSB, lock_lsb );
530	_mwr_set_channel_register( cluster_xy, channel, MWR_CHANNEL_LOCK_MSB, lock_msb );
531	}
532
533	#if GIET_DEBUG_COPROC
534	_printf("\n[GIET DEBUG COPROC] _sys_coproc_channel_init() for coproc[%d,%d]\n"
535	" channel = %d / mode = %d / buffer_size = %d\n"
536	" buffer_paddr = %l / mwmr_paddr = %l / lock_paddr = %l\n",
537	x , y , channel , mode , size ,
538	buffer_paddr, mwmr_paddr, lock_paddr );
539	#endif
540
541	return 0;
542	} // end _sys_coproc_channel_init()
543
544	////////////////////////////////////////////////////
545	int _sys_coproc_run( unsigned int coproc_reg_index )
546	{
547	// processor coordinates
548	unsigned int procid = _get_procid();
549	unsigned int x = procid >> (Y_WIDTH + P_WIDTH);
550	unsigned int y = (procid >> P_WIDTH) & ((1<<Y_WIDTH)-1);
551	unsigned int p = procid & ((1<<P_WIDTH)-1);
552
553	// get coprocessor coordinates
554	unsigned int cluster_xy = _get_context_slot( CTX_COPROC_ID );
555	if ( cluster_xy > 0xFF )
556	{
557	_printf("\n[GIET_ERROR] in _sys_coproc_run(): "
558	"no coprocessor allocated to task running on P[%d,%d,%d]\n",
559	x , y , p );
560	return -1;
561	}
562
563	unsigned int cx = cluster_xy >> Y_WIDTH;
564	unsigned int cy = cluster_xy & ((1<<Y_WIDTH)-1);
565	unsigned int cluster_id = cx * Y_SIZE + cy;
566	unsigned int info = _coproc_info[cluster_id];
567	unsigned int nb_to = info & 0xFF;
568	unsigned int nb_from = (info>>8) & 0xFF;
569	unsigned int mode = 0xFFFFFFFF;
570	unsigned int channel;
571
572	// register coprocessor running mode
573	for ( channel = 0 ; channel < (nb_from + nb_to) ; channel++ )
574	{
575	unsigned int temp;
576	temp = _mwr_get_channel_register( cluster_xy , channel , MWR_CHANNEL_MODE );
577
578	if ( mode == 0xFFFFFFFF )
579	{
580	mode = temp;
581	}
582	else if ( temp != mode )
583	{
584	_printf("\n[GIET_ERROR] P[%d,%d,%d] in _sys_coproc_run() for coprocessor[%d,%d]\n"
585	" all channels don't have the same mode\n", x , y , p , cx , cy );
586	return -1;
587	}
588	}
589	_coproc_mode[cluster_id] = mode;
590
591	// start all communication channels
592	for ( channel = 0 ; channel < (nb_from + nb_to) ; channel++ )
593	{
594	_mwr_set_channel_register( cluster_xy , channel , MWR_CHANNEL_RUNNING , 1 );
595	}
596
597	//////////////////////////////////////////////////////////////////////////
598	if ( (mode == MODE_MWMR) \|\| (mode == MODE_DMA_NO_IRQ) ) // no descheduling
599	{
600	// start coprocessor
601	_mwr_set_coproc_register( cluster_xy , coproc_reg_index , 1 );
602
603	#if GIET_DEBUG_COPROC
604	if ( mode == MODE_MWMR )
605	_printf("\n[GIET DEBUG COPROC] _sys_coproc_run() P[%d,%d,%d] starts coprocessor[%d,%d]\n"
606	" MODE_MWMR at cycle %d\n", x , y , p , cx , cy , _get_proctime() );
607	else
608	_printf("\n[GIET DEBUG COPROC] _sys_coproc_run() P[%d,%d,%d] starts coprocessor[%d,%d]\n"
609	" MODE_DMA_NO_IRQ at cycle %d\n", x , y , p , cx , cy , _get_proctime() );
610	#endif
611
612	return 0;
613	}
614	///////////////////////////////////////////////////////////////////////////
615	else // mode == MODE_DMA_IRQ => descheduling
616	{
617	// set _coproc_gtid
618	unsigned int ltid = _get_current_task_id();
619	_coproc_gtid[cluster_id] = (procid<<16) + ltid;
620
621	// enters critical section
622	unsigned int save_sr;
623	_it_disable( &save_sr );
624
625	// set NORUN_MASK_COPROC bit
626	static_scheduler_t* psched = (static_scheduler_t*)_schedulers[x][y][p];
627	unsigned int* ptr = &psched->context[ltid][CTX_NORUN_ID];
628	_atomic_or( ptr , NORUN_MASK_COPROC );
629
630	// start coprocessor
631	_mwr_set_coproc_register( cluster_xy , coproc_reg_index , 1 );
632
633	#if GIET_DEBUG_COPROC
634	_printf("\n[GIET DEBUG COPROC] _sys_coproc_run() P[%d,%d,%d] starts coprocessor[%d,%d]\n"
635	" MODE_DMA_IRQ at cycle %d\n", x , y , p , cx , cy , _get_proctime() );
636	#endif
637
638	// deschedule task
639	_ctx_switch();
640
641	#if GIET_DEBUG_COPROC
642	_printf("\n[GIET DEBUG COPROC] _sys_coproc_run() P[%d,%d,%d] resume\n"
643	" coprocessor[%d,%d] completion at cycle %d\n",
644	x , y , p , cx , cy , _get_proctime() );
645	#endif
646
647	// restore SR
648	_it_restore( &save_sr );
649
650	// return error computed by mwr_isr()
651	return _coproc_error[cluster_id];
652	}
653	} // end _sys_coproc_run()
654
655	///////////////////////////
656	int _sys_coproc_completed()
657	{
658	// processor coordinates
659	unsigned int procid = _get_procid();
660	unsigned int x = procid >> (Y_WIDTH + P_WIDTH);
661	unsigned int y = (procid >> P_WIDTH) & ((1<<Y_WIDTH)-1);
662	unsigned int p = procid & ((1<<P_WIDTH)-1);
663
664	// get coprocessor coordinates
665	unsigned int cluster_xy = _get_context_slot( CTX_COPROC_ID );
666	if ( cluster_xy > 0xFF )
667	{
668	_printf("\n[GIET_ERROR] in _sys_coproc_completed(): "
669	"no coprocessor allocated to task running on P[%d,%d,%d]\n",
670	x , y , p );
671	return -1;
672	}
673
674	unsigned int cx = cluster_xy >> Y_WIDTH;
675	unsigned int cy = cluster_xy & ((1<<Y_WIDTH)-1);
676	unsigned int cluster_id = cx * Y_SIZE + cy;
677	unsigned int mode = _coproc_mode[cluster_id];
678
679	// analyse possible errors
680	if ( mode == MODE_DMA_NO_IRQ )
681	{
682	unsigned int info = _coproc_info[cluster_id];
683	unsigned int nb_to = info & 0xFF;
684	unsigned int nb_from = (info>>8) & 0xFF;
685	unsigned int error = 0;
686	unsigned int channel;
687	unsigned int status;
688
689	// get status for all channels, and signal all reported errors
690	for ( channel = 0 ; channel < (nb_to +nb_from) ; channel++ )
691	{
692	do
693	{
694	status = _mwr_get_channel_register( cluster_xy , channel , MWR_CHANNEL_STATUS );
695	if ( status == MWR_CHANNEL_ERROR_DATA )
696	{
697	_printf("\n[GIET_ERROR] in _sys_coproc_completed()"
698	" / channel %d / DATA_ERROR\n", channel );
699	error = 1;
700	break;
701	}
702	else if ( status == MWR_CHANNEL_ERROR_LOCK )
703	{
704	_printf("\n[GIET_ERROR] in _sys_coproc_completed()"
705	" / channel %d / LOCK_ERROR\n", channel );
706	error = 1;
707	break;
708	}
709	else if ( status == MWR_CHANNEL_ERROR_DESC )
710	{
711	_printf("\n[GIET_ERROR] in _sys_coproc_completed()"
712	" / channel %d / DESC_ERROR\n", channel );
713	error = 1;
714	break;
715	}
716	} while ( status == MWR_CHANNEL_BUSY );
717
718	// reset channel
719	_mwr_set_channel_register( cluster_xy , channel , MWR_CHANNEL_RUNNING , 0 );
720
721	} // end for channels
722
723	#if GIET_DEBUG_COPROC
724	_printf("\n[GIET DEBUG COPROC] _sys_coproc_completed() for coprocessor[%d,%d] error = %d\n",
725	cx , cy , error );
726	#endif
727
728	return error;
729	}
730	else // mode == MODE_MWMR or MODE_DMA_IRQ
731	{
732	_printf("\n[GIET ERROR] sys_coproc_completed() should not be called for "
733	"coprocessor[%d,%d] running in MODE_MWMR or MODE_DMA_IRQ\n", cx , cy );
734	return 1;
735	}
736	} // end _sys_coproc_completed()
737
738
739	//////////////////////////////////////////////////////////////////////////////
740	// TTY related syscall handlers
741	//////////////////////////////////////////////////////////////////////////////
742
743	/////////////////////////////////////////
744	int _sys_tty_alloc( unsigned int shared )
745	{
746	unsigned int channel;
747
748	if ( _get_context_slot( CTX_TTY_ID ) < NB_TTY_CHANNELS )
749	{
750	_printf("\n[GIET_ERROR] in _sys_tty_alloc() : TTY channel already allocated\n");
751	return 0;
752	}
753
754	// get a new TTY channel
755	for ( channel = 0 ; channel < NB_TTY_CHANNELS ; channel++ )
756	{
757	if ( !_tty_channel[channel] )
758	{
759	_tty_channel[channel] = 1;
760	break;
761	}
762	}
763	if ( channel >= NB_TTY_CHANNELS )
764	{
765	_printf("\n[GIET_ERROR] in _sys_tty_alloc() : no TTY channel available\n");
766	return -1;
767	}
768
769	// reset kernel buffer for allocated TTY channel
770	_tty_rx_full[channel] = 0;
771
772	// allocate a WTI mailbox to the calling proc if external IRQ
773	unsigned int unused;
774	if ( USE_PIC ) _ext_irq_alloc( ISR_TTY_RX , channel , &unused );
775
776	// update CTX_TTY_ID
777	if ( shared ) // for all tasks in the same vspace
778	{
779	unsigned int vspace_id = _get_context_slot( CTX_VSID_ID );
780	mapping_header_t header = (mapping_header_t )SEG_BOOT_MAPPING_BASE;
781	mapping_vspace_t *vspace = _get_vspace_base(header);
782	mapping_task_t *task = _get_task_base(header);
783
784	// scan tasks in vspace
785	unsigned int task_id;
786	for (task_id = vspace[vspace_id].task_offset;
787	task_id < (vspace[vspace_id].task_offset + vspace[vspace_id].tasks);
788	task_id++)
789	{
790	unsigned int y_size = header->y_size;
791	unsigned int cid = task[task_id].clusterid;
792	unsigned int x = cid / y_size;
793	unsigned int y = cid % y_size;
794	unsigned int p = task[task_id].proclocid;
795	unsigned int ltid = task[task_id].ltid;
796	static_scheduler_t* psched = (static_scheduler_t*)_schedulers[x][y][p];
797
798	// don't overwrite TTY_ID
799	if ( psched->context[ltid][CTX_TTY_ID] >= NB_TTY_CHANNELS )
800	{
801	psched->context[ltid][CTX_TTY_ID] = channel;
802	}
803	}
804	}
805	else // for calling task only
806	{
807	_set_context_slot( CTX_TTY_ID, channel );
808	}
809
810	return 0;
811	}
812
813	/////////////////////////////////////////
814	// NOTE: not a syscall
815	int _sys_tty_release()
816	{
817	unsigned int channel = _get_context_slot( CTX_TTY_ID );
818
819	if ( channel == -1 )
820	{
821	_printf("\n[GIET_ERROR] in _sys_tty_alloc() : TTY channel already released\n");
822	return -1;
823	}
824
825	// release WTI mailbox
826	if ( USE_PIC ) _ext_irq_release( ISR_TTY_RX , channel );
827
828	// reset CTX_TTY_ID for all tasks in vspace
829	unsigned int vspace_id = _get_context_slot( CTX_VSID_ID );
830	mapping_header_t header = (mapping_header_t )SEG_BOOT_MAPPING_BASE;
831	mapping_vspace_t *vspace = _get_vspace_base(header);
832	mapping_task_t *task = _get_task_base(header);
833
834	unsigned int task_id;
835	for (task_id = vspace[vspace_id].task_offset;
836	task_id < (vspace[vspace_id].task_offset + vspace[vspace_id].tasks);
837	task_id++)
838	{
839	unsigned int y_size = header->y_size;
840	unsigned int cid = task[task_id].clusterid;
841	unsigned int x = cid / y_size;
842	unsigned int y = cid % y_size;
843	unsigned int p = task[task_id].proclocid;
844	unsigned int ltid = task[task_id].ltid;
845	static_scheduler_t* psched = (static_scheduler_t*)_schedulers[x][y][p];
846
847	// only clear matching TTY_ID
848	if ( psched->context[ltid][CTX_TTY_ID] == channel )
849	{
850	psched->context[ltid][CTX_TTY_ID] = -1;
851	}
852	}
853
854	// release TTY channel
855	_tty_channel[channel] = 0;
856
857	return 0;
858	}
859
860	/////////////////////////////////////////////////
861	int _sys_tty_write( const char* buffer,
862	unsigned int length, // number of characters
863	unsigned int channel) // channel index
864	{
865	unsigned int nwritten;
866
867	// compute and check tty channel
868	if( channel == 0xFFFFFFFF ) channel = _get_context_slot(CTX_TTY_ID);
869	if( channel >= NB_TTY_CHANNELS ) return -1;
870
871	// write string to TTY channel
872	for (nwritten = 0; nwritten < length; nwritten++)
873	{
874	// check tty's status
875	if ( _tty_get_register( channel, TTY_STATUS ) & 0x2 ) break;
876
877	// write one byte
878	if (buffer[nwritten] == '\n')
879	{
880	_tty_set_register( channel, TTY_WRITE, (unsigned int)'\r' );
881	}
882	_tty_set_register( channel, TTY_WRITE, (unsigned int)buffer[nwritten] );
883	}
884
885	return nwritten;
886	}
887
888	////////////////////////////////////////////////
889	int _sys_tty_read( char* buffer,
890	unsigned int length, // unused
891	unsigned int channel) // channel index
892	{
893	// compute and check tty channel
894	if( channel == 0xFFFFFFFF ) channel = _get_context_slot(CTX_TTY_ID);
895	if( channel >= NB_TTY_CHANNELS ) return -1;
896
897	// read one character from TTY channel
898	if (_tty_rx_full[channel] == 0)
899	{
900	return 0;
901	}
902	else
903	{
904	*buffer = _tty_rx_buf[channel];
905	_tty_rx_full[channel] = 0;
906	return 1;
907	}
908	}
909
910	///////////////////////////////////////////
911	int _sys_tty_get_lock( unsigned int channel, // unused
912	unsigned int * save_sr_ptr )
913	{
914	// check tty channel
915	if( channel != 0 ) return 1;
916
917	_it_disable( save_sr_ptr );
918	_sqt_lock_acquire( &_tty0_sqt_lock );
919	return 0;
920	}
921
922	///////////////////////////////////////////////
923	int _sys_tty_release_lock( unsigned int channel,
924	unsigned int * save_sr_ptr )
925	{
926	// check tty channel
927	if( channel != 0 ) return 1;
928
929	_sqt_lock_release( &_tty0_sqt_lock );
930	_it_restore( save_sr_ptr );
931	return 0;
932	}
933
934	//////////////////////////////////////////////////////////////////////////////
935	// TIM related syscall handlers
936	//////////////////////////////////////////////////////////////////////////////
937
938	////////////////////
939	int _sys_tim_alloc()
940	{
941	// get a new timer index
942	unsigned int channel = _atomic_increment( &_tim_channel_allocator, 1 );
943
944	if ( channel >= NB_TIM_CHANNELS )
945	{
946	_printf("\n[GIET_ERROR] in _sys_tim_alloc() : not enough TIM channels\n");
947	return -1;
948	}
949	else
950	{
951	_set_context_slot( CTX_TIM_ID, channel );
952	return 0;
953	}
954	}
955
956	////////////////////
957	// NOTE: not a syscall
958	int _sys_tim_release()
959	{
960	// release one timer
961	_atomic_increment( &_tim_channel_allocator, 0xFFFFFFFF );
962
963	return 0;
964	}
965
966	/////////////////////////////////////////
967	int _sys_tim_start( unsigned int period )
968	{
969	// get timer index
970	unsigned int channel = _get_context_slot( CTX_TIM_ID );
971	if ( channel >= NB_TIM_CHANNELS )
972	{
973	_printf("\n[GIET_ERROR] in _sys_tim_start() : not enough TIM channels\n");
974	return -1;
975	}
976
977	// start timer
978	_timer_start( channel, period );
979
980	return 0;
981	}
982
983	///////////////////
984	int _sys_tim_stop()
985	{
986	// get timer index
987	unsigned int channel = _get_context_slot( CTX_TIM_ID );
988	if ( channel >= NB_TIM_CHANNELS )
989	{
990	_printf("\n[GIET_ERROR] in _sys_tim_stop() : illegal timer index\n");
991	return -1;
992	}
993
994	// stop timer
995	_timer_stop( channel );
996
997	return 0;
998	}
999
1000	//////////////////////////////////////////////////////////////////////////////
1001	// NIC related syscall handlers
1002	//////////////////////////////////////////////////////////////////////////////
1003
1004	#define NIC_CONTAINER_SIZE 4096
1005
1006	////////////////////////////////////////
1007	int _sys_nic_alloc( unsigned int is_rx,
1008	unsigned int xmax,
1009	unsigned int ymax )
1010	{
1011	// check xmax / ymax parameters
1012	if ( xmax > X_SIZE )
1013	{
1014	_printf("\n[GIET_ERROR] in _sys_nic_alloc() xmax argument too large\n");
1015	return -1;
1016	}
1017	if ( ymax > Y_SIZE )
1018	{
1019	_printf("\n[GIET_ERROR] in _sys_nic_alloc() ymax argument too large\n");
1020	return -1;
1021	}
1022
1023	////////////////////////////////////////////////////////
1024	// Step 1: get and register CMA and NIC channel index //
1025	////////////////////////////////////////////////////////
1026
1027	// get a NIC_RX or NIC_TX channel index
1028	unsigned int nic_channel;
1029	unsigned int cma_channel;
1030
1031	if ( is_rx ) nic_channel = _atomic_increment( &_nic_rx_channel_allocator, 1 );
1032	else nic_channel = _atomic_increment( &_nic_tx_channel_allocator, 1 );
1033
1034	if ( (nic_channel >= NB_NIC_CHANNELS) )
1035	{
1036	_printf("\n[GIET_ERROR] in _sys_nic_alloc() not enough NIC channels\n");
1037	return -1;
1038	}
1039
1040	// get a CMA channel index
1041	cma_channel = _atomic_increment( &_cma_channel_allocator, 1 );
1042
1043	if ( cma_channel >= NB_CMA_CHANNELS )
1044	{
1045	_printf("\n[GIET_ERROR] in _sys_nic_alloc() not enough CMA channels\n");
1046	return -1;
1047	}
1048
1049	#if GIET_DEBUG_NIC
1050	unsigned int thread = _get_context_slot( CTX_TRDID_ID );
1051	_printf("\n[GIET DEBUG NIC] Task %d enters sys_nic_alloc() at cycle %d\n"
1052	" nic_channel = %d / cma_channel = %d\n",
1053	thread , _get_proctime() , nic_channel , cma_channel );
1054	#endif
1055
1056	// register nic_index and cma_index in task context
1057	if ( is_rx )
1058	{
1059	_set_context_slot( CTX_NIC_RX_ID, nic_channel );
1060	_set_context_slot( CTX_CMA_RX_ID, cma_channel );
1061	}
1062	else
1063	{
1064	_set_context_slot( CTX_NIC_TX_ID, nic_channel );
1065	_set_context_slot( CTX_CMA_TX_ID, cma_channel );
1066	}
1067
1068	/////////////////////////////////////////////////////////////////////////////////
1069	// Step 2: loop on all the clusters //
1070	// Allocate the kernel containers and status, compute the container and the //
1071	// status physical addresses, fill and synchronize the kernel CHBUF descriptor //
1072	/////////////////////////////////////////////////////////////////////////////////
1073
1074	// physical addresses to be registered in the CMA registers
1075	unsigned long long nic_chbuf_pbase; // NIC chbuf physical address
1076	unsigned long long ker_chbuf_pbase; // kernel chbuf physical address
1077
1078	// allocate one kernel container and one status variable per cluster in the
1079	// (xmax / ymax) mesh
1080	unsigned int cx; // cluster X coordinate
1081	unsigned int cy; // cluster Y coordinate
1082	unsigned int index; // container index in chbuf
1083	unsigned int vaddr; // virtual address
1084	unsigned long long cont_paddr; // container physical address
1085	unsigned long long sts_paddr; // container status physical address
1086
1087	unsigned int flags; // for _v2p_translate()
1088
1089	for ( cx = 0 ; cx < xmax ; cx++ )
1090	{
1091	for ( cy = 0 ; cy < ymax ; cy++ )
1092	{
1093	// compute index in chbuf
1094	index = (cx * ymax) + cy;
1095
1096	// allocate the kernel container
1097	vaddr = (unsigned int)_remote_malloc( NIC_CONTAINER_SIZE, cx, cy );
1098
1099	if ( vaddr == 0 ) // not enough kernel heap memory in cluster[cx,cy]
1100	{
1101	_printf("\n[GIET_ERROR] in _sys_nic_alloc() not enough kenel heap"
1102	" in cluster[%d,%d]\n", cx, cy );
1103	return -1;
1104	}
1105
1106	// compute container physical address
1107	cont_paddr = _v2p_translate( vaddr , &flags );
1108
1109	// checking container address alignment
1110	if ( cont_paddr & 0x3F )
1111	{
1112	_printf("\n[GIET ERROR] in _sys_nic_alloc() : container address of cluster[%d,%d] not aligned\n",
1113	cx, cy);
1114	return -1;
1115	}
1116
1117	#if GIET_DEBUG_NIC
1118	_printf("\n[GIET DEBUG NIC] Task %d in _sys_nic_alloc()\n"
1119	" allocates in cluster[%d,%d]:\n"
1120	" - container vaddr = %x / paddr = %l\n",
1121	thread , cx , cy , vaddr, cont_paddr );
1122	#endif
1123
1124	// allocate the kernel container status
1125	// it occupies 64 bytes but only last bit is useful (1 for full and 0 for empty)
1126	vaddr = (unsigned int)_remote_malloc( 64, cx, cy );
1127
1128	if ( vaddr == 0 ) // not enough kernel heap memory in cluster[cx,cy]
1129	{
1130	_printf("\n[GIET_ERROR] in _sys_nic_alloc() not enough kenel heap"
1131	" in cluster[%d,%d]\n", cx, cy );
1132	return -1;
1133	}
1134
1135	// compute status physical address
1136	sts_paddr = _v2p_translate( vaddr , &flags );
1137
1138	// checking status address alignment
1139	if ( sts_paddr & 0x3F )
1140	{
1141	_printf("\n[GIET ERROR] in _sys_nic_alloc() : status address of cluster[%d,%d] not aligned\n",
1142	cx, cy);
1143	return -1;
1144	}
1145
1146	// initialize chbuf entry
1147	// The buffer descriptor has the following structure:
1148	// - the 26 LSB bits contain bits[6:31] of the buffer physical address
1149	// - the 26 following bits contain bits[6:31] of the physical address where the
1150	// buffer status is located
1151	// - the 12 MSB bits contain the common address extension of the buffer and its
1152	// status
1153	if ( is_rx )
1154	_nic_ker_rx_chbuf[nic_channel].buf_desc[index] =
1155	(unsigned long long)
1156	((sts_paddr & 0xFFFFFFFFULL) >> 6) +
1157	(((cont_paddr & 0xFFFFFFFFFFFULL) >> 6) << 26);
1158	else
1159	_nic_ker_tx_chbuf[nic_channel].buf_desc[index] =
1160	(unsigned long long)
1161	((sts_paddr & 0xFFFFFFC0ULL) >> 6) +
1162	(((cont_paddr & 0xFFFFFFFFFC0ULL) >> 6) << 26);
1163
1164	#if GIET_DEBUG_NIC
1165	_printf("\n[GIET DEBUG NIC] Task %d in _sys_nic_alloc()\n"
1166	" - status vaddr = %x / paddr = %l\n"
1167	" Buffer descriptor = %l\n",
1168	thread, vaddr, sts_paddr,
1169	(unsigned long long)((sts_paddr & 0xFFFFFFFFULL) >> 6) +
1170	(((cont_paddr & 0xFFFFFFFFFFFULL) >> 6) << 26) );
1171	#endif
1172	}
1173	}
1174
1175	// complete kernel chbuf initialisation
1176	if ( is_rx )
1177	{
1178	_nic_ker_rx_chbuf[nic_channel].xmax = xmax;
1179	_nic_ker_rx_chbuf[nic_channel].ymax = ymax;
1180	}
1181	else
1182	{
1183	_nic_ker_tx_chbuf[nic_channel].xmax = xmax;
1184	_nic_ker_tx_chbuf[nic_channel].ymax = ymax;
1185	}
1186
1187	// compute the kernel chbuf descriptor physical address
1188	if ( is_rx ) vaddr = (unsigned int)( &_nic_ker_rx_chbuf[nic_channel] );
1189	else vaddr = (unsigned int)( &_nic_ker_tx_chbuf[nic_channel] );
1190
1191	ker_chbuf_pbase = _v2p_translate( vaddr , &flags );
1192
1193	#if GIET_DEBUG_NIC
1194	_printf("\n[GIET DEBUG NIC] Task %d in _sys_nic_alloc() get kernel chbuf\n"
1195	" vaddr = %x / paddr = %l\n",
1196	thread , vaddr , ker_chbuf_pbase );
1197	#endif
1198
1199	// sync the kernel chbuf in L2 after write in L2
1200	_mmc_sync( ker_chbuf_pbase, sizeof( ker_chbuf_t ) );
1201
1202	///////////////////////////////////////////////////////////////
1203	// Step 3: compute the NIC chbuf descriptor physical address //
1204	///////////////////////////////////////////////////////////////
1205
1206	unsigned int offset;
1207	if ( is_rx ) offset = 0x4100;
1208	else offset = 0x4110;
1209	nic_chbuf_pbase = (((unsigned long long)((X_IO << Y_WIDTH) + Y_IO))<<32) \|
1210	(SEG_NIC_BASE + (nic_channel<<15) + offset);
1211
1212	#if GIET_DEBUG_NIC
1213	_printf("\n[GIET DEBUG NIC] Task %d in _sys_nic_alloc() get NIC chbuf : paddr = %l\n",
1214	thread , nic_chbuf_pbase );
1215	#endif
1216
1217	////////////////////////////////////////////////////////////////////////////////
1218	// Step 4: initialize CMA registers defining the source & destination chbufs //
1219	////////////////////////////////////////////////////////////////////////////////
1220
1221	if ( is_rx ) // NIC to kernel
1222	{
1223	_cma_set_register( cma_channel, CHBUF_SRC_DESC , (unsigned int)(nic_chbuf_pbase) );
1224	_cma_set_register( cma_channel, CHBUF_SRC_EXT , (unsigned int)(nic_chbuf_pbase>>32) );
1225	_cma_set_register( cma_channel, CHBUF_SRC_NBUFS, 2 );
1226	_cma_set_register( cma_channel, CHBUF_DST_DESC , (unsigned int)(ker_chbuf_pbase) );
1227	_cma_set_register( cma_channel, CHBUF_DST_EXT , (unsigned int)(ker_chbuf_pbase>>32) );
1228	_cma_set_register( cma_channel, CHBUF_DST_NBUFS, xmax * ymax );
1229	}
1230	else // kernel to NIC
1231	{
1232	_cma_set_register( cma_channel, CHBUF_SRC_DESC , (unsigned int)(ker_chbuf_pbase) );
1233	_cma_set_register( cma_channel, CHBUF_SRC_EXT , (unsigned int)(ker_chbuf_pbase>>32) );
1234	_cma_set_register( cma_channel, CHBUF_SRC_NBUFS, xmax * ymax );
1235	_cma_set_register( cma_channel, CHBUF_DST_DESC , (unsigned int)(nic_chbuf_pbase) );
1236	_cma_set_register( cma_channel, CHBUF_DST_EXT , (unsigned int)(nic_chbuf_pbase>>32) );
1237	_cma_set_register( cma_channel, CHBUF_DST_NBUFS, 2 );
1238	}
1239
1240	#if GIET_DEBUG_NIC
1241	_printf("\n[GIET DEBUG NIC] Task %d exit _sys_nic_alloc() at cycle %d\n",
1242	thread, _get_proctime() );
1243	#endif
1244
1245	return nic_channel;
1246	} // end _sys_nic_alloc()
1247
1248
1249	////////////////////////////////////////
1250	// NOTE: not a syscall
1251	int _sys_nic_release( unsigned int is_rx )
1252	{
1253	if ( is_rx )
1254	_atomic_increment( &_nic_rx_channel_allocator , 0xFFFFFFFF );
1255	else
1256	_atomic_increment( &_nic_tx_channel_allocator , 0xFFFFFFFF );
1257
1258	return 0;
1259	}
1260
1261
1262	////////////////////////////////////////
1263	int _sys_nic_start( unsigned int is_rx,
1264	unsigned int channel )
1265	{
1266	unsigned int nic_channel;
1267	unsigned int cma_channel;
1268
1269	// get NIC channel index and CMA channel index from task context
1270	if ( is_rx )
1271	{
1272	nic_channel = _get_context_slot( CTX_NIC_RX_ID );
1273	cma_channel = _get_context_slot( CTX_CMA_RX_ID );
1274	}
1275	else
1276	{
1277	nic_channel = _get_context_slot( CTX_NIC_TX_ID );
1278	cma_channel = _get_context_slot( CTX_CMA_TX_ID );
1279	}
1280
1281	#if GIET_DEBUG_NIC
1282	unsigned int thread = _get_context_slot( CTX_TRDID_ID );
1283	_printf("\n[GIET DEBUG NIC] Task %d in _sys_nic_start() at cycle %d\n"
1284	" get NIC channel = %d / CMA channel = %d\n",
1285	thread, _get_proctime(), nic_channel, cma_channel );
1286	#endif
1287
1288	// check NIC and CMA channels index
1289	if ( nic_channel != channel )
1290	{
1291	_printf("\n[GIET_ERROR] in _sys_nic_start(): illegal NIC channel\n");
1292	return -1;
1293	}
1294	if ( cma_channel >= NB_CMA_CHANNELS )
1295	{
1296	_printf("\n[GIET_ERROR] in _sys_nic_start(): illegal CMA channel\n");
1297	return -1;
1298	}
1299
1300	// start CMA transfer
1301	_cma_set_register( cma_channel, CHBUF_BUF_SIZE , NIC_CONTAINER_SIZE );
1302	_cma_set_register( cma_channel, CHBUF_PERIOD , 0 ); // OUT_OF_ORDER
1303	_cma_set_register( cma_channel, CHBUF_RUN , 1 );
1304
1305	// activates NIC channel
1306	_nic_channel_start( nic_channel, is_rx, GIET_NIC_MAC4, GIET_NIC_MAC2 );
1307
1308	#if GIET_DEBUG_NIC
1309	_printf("\n[GIET DEBUG NIC] Task %d exit _sys_nic_start() at cycle %d\n",
1310	thread , _get_proctime() );
1311	#endif
1312
1313	return 0;
1314	} // end _sys_nic_start()
1315
1316
1317	//////////////////////////////////////
1318	int _sys_nic_move( unsigned int is_rx,
1319	unsigned int channel,
1320	void* buffer )
1321	{
1322
1323	#if GIET_DEBUG_NIC
1324	unsigned int thread = _get_context_slot( CTX_TRDID_ID );
1325	_printf("\n[GIET DEBUG NIC] Task %d enters _sys_nic_move() at cycle %d\n",
1326	thread , _get_proctime() );
1327	#endif
1328
1329	// check NIC channel index
1330	if ( channel >= NB_NIC_CHANNELS )
1331	{
1332	_printf("\n[GIET_ERROR] in _sys_nic_move() : illegal NIC channel index\n");
1333	return -1;
1334	}
1335
1336	// get kernel chbuf virtual address
1337	ker_chbuf_t* ker_chbuf;
1338	if ( is_rx ) ker_chbuf = &_nic_ker_rx_chbuf[channel];
1339	else ker_chbuf = &_nic_ker_tx_chbuf[channel];
1340
1341	// get xmax / ymax parameters
1342	unsigned int xmax = ker_chbuf->xmax;
1343	unsigned int ymax = ker_chbuf->ymax;
1344
1345	// get cluster coordinates for the processor running the calling task
1346	unsigned int procid = _get_procid();
1347	unsigned int cx = procid >> (Y_WIDTH + P_WIDTH);
1348	unsigned int cy = (procid >> P_WIDTH) & ((1<<Y_WIDTH)-1);
1349
1350	// check processor coordinates / (xmax,ymax)
1351	if ( cx >= xmax )
1352	{
1353	_printf("\n[GIET_ERROR] in _sys_nic_move() : processor X coordinate = %d"
1354	" / xmax = %d\n", cx , xmax );
1355	return -1;
1356	}
1357	if ( cy >= ymax )
1358	{
1359	_printf("\n[GIET_ERROR] in _sys_nic_move() : processor Y coordinate = %d"
1360	" / ymax = %d\n", cy , ymax );
1361	return -1;
1362	}
1363
1364	unsigned long long usr_buf_paddr; // user buffer physical address
1365	unsigned long long ker_buf_paddr; // kernel buffer physical address
1366	unsigned long long ker_sts_paddr; // kernel buffer status physical address
1367	unsigned long long ker_buf_desc; // kernel buffer descriptor
1368	unsigned int ker_sts; // kernel buffer status (full or empty)
1369	unsigned int index; // kernel buffer index in chbuf
1370	unsigned int flags; // for _v2P_translate
1371
1372	// Compute user buffer physical address and check access rights
1373	usr_buf_paddr = _v2p_translate( (unsigned int)buffer , &flags );
1374
1375	if ( (flags & PTE_U) == 0 )
1376	{
1377	_printf("\n[GIET ERROR] in _sys_nic_tx_move() : illegal user buffer address\n");
1378	return -1;
1379	}
1380
1381	#if GIET_DEBUG_NIC
1382	_printf("\n[GIET DEBUG NIC] Task %d in _sys_nic_move() get user buffer : paddr = %l\n",
1383	thread, usr_buf_paddr );
1384	#endif
1385
1386	// compute buffer index, buffer descriptor paddr and buffer status paddr
1387	index = (ymax * cx) + cy;
1388	ker_buf_desc = ker_chbuf->buf_desc[index];
1389	ker_sts_paddr = ((ker_buf_desc & 0xFFF0000000000000ULL) >> 20) +
1390	((ker_buf_desc & 0x3FFFFFFULL) << 6);
1391
1392	#if GIET_DEBUG_NIC
1393	_printf("\n[GIET DEBUG NIC] Task %d in _sys_nic_move() read ker_buf_desc %d at cycle %d\n"
1394	" kernel buffer descriptor = %l\n",
1395	thread, index, _get_proctime(), ker_buf_desc );
1396	#endif
1397
1398	// poll local kernel container status until success
1399	while ( 1 )
1400	{
1401	// inval buffer descriptor in L2 before read in L2
1402	_mmc_inval( ker_sts_paddr, 4 );
1403	ker_sts = _physical_read( ker_sts_paddr );
1404
1405	#if GIET_DEBUG_NIC
1406	_printf("\n[GIET DEBUG NIC] Task %d in _sys_nic_move() read ker_buf_sts %d at cycle %d\n"
1407	" paddr = %l / kernel buffer status = %x\n",
1408	thread, index, _get_proctime(), ker_sts_paddr, ker_sts );
1409	#endif
1410
1411	// test buffer status and break if found
1412	if ( ( is_rx != 0 ) && ( ker_sts == 0x1 ) ) break;
1413	if ( ( is_rx == 0 ) && ( ker_sts == 0 ) ) break;
1414	}
1415
1416	// compute kernel buffer physical address
1417	ker_buf_paddr = (ker_buf_desc & 0xFFFFFFFFFC000000ULL) >> 20;
1418
1419	// move one container
1420	if ( is_rx ) // RX transfer
1421	{
1422	// inval kernel buffer in L2 before read in L2
1423	_mmc_inval( ker_buf_paddr, NIC_CONTAINER_SIZE );
1424
1425	// transfer data from kernel buffer to user buffer
1426	_physical_memcpy( usr_buf_paddr,
1427	ker_buf_paddr,
1428	NIC_CONTAINER_SIZE );
1429	#if GIET_DEBUG_NIC
1430	_printf("\n[GIET DEBUG NIC] Task %d in _sys_nic_move() transfer kernel buffer %l\n"
1431	" to user buffer %l at cycle %d\n",
1432	thread , ker_buf_paddr , usr_buf_paddr , _get_proctime() );
1433	#endif
1434
1435	}
1436	else // TX transfer
1437	{
1438	// transfer data from user buffer to kernel buffer
1439	_physical_memcpy( ker_buf_paddr,
1440	usr_buf_paddr,
1441	NIC_CONTAINER_SIZE );
1442
1443	// sync kernel buffer in L2 after write in L2
1444	_mmc_sync( ker_buf_paddr, NIC_CONTAINER_SIZE );
1445
1446	#if GIET_DEBUG_NIC
1447	_printf("\n[GIET DEBUG NIC] Task %d in _sys_nic_move() transfer "
1448	"user buffer %l to kernel buffer %l at cycle %d\n",
1449	thread , usr_buf_paddr , ker_buf_paddr , _get_proctime() );
1450	#endif
1451
1452	}
1453
1454	// update kernel chbuf status
1455	if ( is_rx ) _physical_write ( ker_sts_paddr, 0 );
1456	else _physical_write ( ker_sts_paddr, 0x1 );
1457
1458	// sync kernel chbuf in L2 after write in L2
1459	_mmc_sync( ker_sts_paddr, 4 );
1460
1461	#if GIET_DEBUG_NIC
1462	_printf("\n[GIET DEBUG NIC] Task %d get buffer %d and exit _sys_nic_move() at cycle %d\n",
1463	thread , index , _get_proctime() );
1464	#endif
1465
1466	return 0;
1467	} // end _sys_nic_move()
1468
1469
1470	////////////////////////////////////////
1471	int _sys_nic_stop( unsigned int is_rx,
1472	unsigned int channel )
1473	{
1474	unsigned int nic_channel;
1475	unsigned int cma_channel;
1476
1477	// get NIC channel index and CMA channel index
1478	if ( is_rx )
1479	{
1480	nic_channel = _get_context_slot( CTX_NIC_RX_ID );
1481	cma_channel = _get_context_slot( CTX_CMA_RX_ID );
1482	}
1483	else
1484	{
1485	nic_channel = _get_context_slot( CTX_NIC_TX_ID );
1486	cma_channel = _get_context_slot( CTX_CMA_TX_ID );
1487	}
1488
1489	// check NIC and CMA channels index
1490	if ( nic_channel != channel )
1491	{
1492	_printf("\n[GIET_ERROR] in _sys_nic_stop(): illegal NIC channel\n");
1493	return -1;
1494	}
1495	if ( cma_channel >= NB_CMA_CHANNELS )
1496	{
1497	_printf("\n[GIET_ERROR] in _sys_nic_stop(): illegal CMA channel\n");
1498	return -1;
1499	}
1500
1501	// desactivates the NIC channel
1502	_nic_channel_stop( nic_channel, is_rx );
1503
1504	// desactivates the CMA channel
1505	_cma_set_register( cma_channel, CHBUF_RUN , 0 );
1506
1507	return 0;
1508	} // end _sys_nic_stop()
1509
1510	////////////////////////////////////////
1511	int _sys_nic_clear( unsigned int is_rx,
1512	unsigned int channel )
1513	{
1514	unsigned int nic_channel;
1515
1516	// get NIC channel
1517	if ( is_rx ) nic_channel = _get_context_slot( CTX_NIC_RX_ID );
1518	else nic_channel = _get_context_slot( CTX_NIC_TX_ID );
1519
1520	if ( nic_channel != channel )
1521	{
1522	_printf("\n[GIET_ERROR] in _sys_nic_clear(): illegal NIC channel\n");
1523	return -1;
1524	}
1525
1526	if ( is_rx )
1527	{
1528	_nic_set_global_register( NIC_G_NPKT_RX_G2S_RECEIVED , 0 );
1529	_nic_set_global_register( NIC_G_NPKT_RX_DES_TOO_SMALL , 0 );
1530	_nic_set_global_register( NIC_G_NPKT_RX_DES_TOO_BIG , 0 );
1531	_nic_set_global_register( NIC_G_NPKT_RX_DES_MFIFO_FULL , 0 );
1532	_nic_set_global_register( NIC_G_NPKT_RX_DES_CRC_FAIL , 0 );
1533	_nic_set_global_register( NIC_G_NPKT_RX_DISPATCH_RECEIVED , 0 );
1534	_nic_set_global_register( NIC_G_NPKT_RX_DISPATCH_BROADCAST , 0 );
1535	_nic_set_global_register( NIC_G_NPKT_RX_DISPATCH_DST_FAIL , 0 );
1536	_nic_set_global_register( NIC_G_NPKT_RX_DISPATCH_CH_FULL , 0 );
1537	}
1538	else
1539	{
1540	_nic_set_global_register( NIC_G_NPKT_TX_DISPATCH_RECEIVED , 0 );
1541	_nic_set_global_register( NIC_G_NPKT_TX_DISPATCH_TRANSMIT , 0 );
1542	_nic_set_global_register( NIC_G_NPKT_TX_DISPATCH_TOO_BIG , 0 );
1543	_nic_set_global_register( NIC_G_NPKT_TX_DISPATCH_TOO_SMALL , 0 );
1544	_nic_set_global_register( NIC_G_NPKT_TX_DISPATCH_SRC_FAIL , 0 );
1545	_nic_set_global_register( NIC_G_NPKT_TX_DISPATCH_BYPASS , 0 );
1546	_nic_set_global_register( NIC_G_NPKT_TX_DISPATCH_BROADCAST , 0 );
1547	}
1548	return 0;
1549	} // en _sys_nic_clear()
1550
1551	////////////////////////////////////////
1552	int _sys_nic_stats( unsigned int is_rx,
1553	unsigned int channel )
1554	{
1555	unsigned int nic_channel;
1556
1557	// get NIC channel
1558	if ( is_rx ) nic_channel = _get_context_slot( CTX_NIC_RX_ID );
1559	else nic_channel = _get_context_slot( CTX_NIC_TX_ID );
1560
1561	if ( nic_channel != channel )
1562	{
1563	_printf("\n[GIET_ERROR] in _sys_nic_stats(): illegal NIC channel\n");
1564	return -1;
1565	}
1566
1567	if ( is_rx )
1568	{
1569	unsigned int received = _nic_get_global_register( NIC_G_NPKT_RX_G2S_RECEIVED );
1570	unsigned int too_small = _nic_get_global_register( NIC_G_NPKT_RX_DES_TOO_SMALL );
1571	unsigned int too_big = _nic_get_global_register( NIC_G_NPKT_RX_DES_TOO_BIG );
1572	unsigned int fifo_full = _nic_get_global_register( NIC_G_NPKT_RX_DES_MFIFO_FULL );
1573	unsigned int crc_fail = _nic_get_global_register( NIC_G_NPKT_RX_DES_CRC_FAIL );
1574	unsigned int broadcast = _nic_get_global_register( NIC_G_NPKT_RX_DISPATCH_BROADCAST );
1575	unsigned int dst_fail = _nic_get_global_register( NIC_G_NPKT_RX_DISPATCH_DST_FAIL );
1576	unsigned int ch_full = _nic_get_global_register( NIC_G_NPKT_RX_DISPATCH_CH_FULL );
1577
1578	_printf("\n### Network Controller RX Statistics ###\n"
1579	"- packets received : %d\n"
1580	"- too small : %d\n"
1581	"- too big : %d\n"
1582	"- fifo full : %d\n"
1583	"- crc fail : %d\n"
1584	"- dst mac fail : %d\n"
1585	"- channel full : %d\n"
1586	"- broadcast : %d\n",
1587	received,
1588	too_small,
1589	too_big,
1590	fifo_full,
1591	crc_fail,
1592	dst_fail,
1593	ch_full,
1594	broadcast );
1595	}
1596	else
1597	{
1598	unsigned int received = _nic_get_global_register( NIC_G_NPKT_TX_DISPATCH_RECEIVED );
1599	unsigned int too_big = _nic_get_global_register( NIC_G_NPKT_TX_DISPATCH_TOO_BIG );
1600	unsigned int too_small = _nic_get_global_register( NIC_G_NPKT_TX_DISPATCH_TOO_SMALL );
1601	unsigned int src_fail = _nic_get_global_register( NIC_G_NPKT_TX_DISPATCH_SRC_FAIL );
1602	unsigned int bypass = _nic_get_global_register( NIC_G_NPKT_TX_DISPATCH_BYPASS );
1603	unsigned int broadcast = _nic_get_global_register( NIC_G_NPKT_TX_DISPATCH_BROADCAST );
1604
1605	_printf("\n### Network Controller TX Statistics ###\n"
1606	"- packets received : %d\n"
1607	"- too small : %d\n"
1608	"- too big : %d\n"
1609	"- src mac fail : %d\n"
1610	"- bypass : %d\n"
1611	"- broadcast : %d\n",
1612	received,
1613	too_big,
1614	too_small,
1615	src_fail,
1616	bypass,
1617	broadcast );
1618	}
1619	return 0;
1620	} // end _sys_nic_stats()
1621
1622	/////////////////////////////////////////////////////////////////////////////////////////
1623	// FBF related syscall handlers
1624	/////////////////////////////////////////////////////////////////////////////////////////
1625
1626	/////////////////////////////////////////////
1627	int _sys_fbf_sync_write( unsigned int offset,
1628	void* buffer,
1629	unsigned int length )
1630	{
1631	char* fbf_address = (char *)SEG_FBF_BASE + offset;
1632	memcpy( fbf_address, buffer, length);
1633
1634	return 0;
1635	}
1636
1637	/////////////////////////////////////////////
1638	int _sys_fbf_sync_read( unsigned int offset,
1639	void* buffer,
1640	unsigned int length )
1641	{
1642	char* fbf_address = (char *)SEG_FBF_BASE + offset;
1643	memcpy( buffer, fbf_address, length);
1644
1645	return 0;
1646	}
1647
1648	////////////////////////
1649	int _sys_fbf_cma_alloc()
1650	{
1651	// get a new CMA channel index
1652	unsigned int channel = _atomic_increment( &_cma_channel_allocator, 1 );
1653
1654	if ( channel >= NB_CMA_CHANNELS )
1655	{
1656	_printf("\n[GIET ERROR] in _sys_fbf_cma_alloc() : not enough CMA channels\n");
1657	return -1;
1658	}
1659	else
1660	{
1661	_set_context_slot( CTX_CMA_FB_ID, channel );
1662	return 0;
1663	}
1664	} // end sys_fbf_cma_alloc()
1665
1666
1667	///////////////////////////////////////////////////
1668	int _sys_fbf_cma_init_buf( void* buf0_vbase,
1669	void* buf1_vbase,
1670	void* sts0_vaddr,
1671	void* sts1_vaddr )
1672	{
1673	#if NB_CMA_CHANNELS > 0
1674
1675	unsigned int vaddr; // virtual address
1676	unsigned int flags; // for _v2p_translate()
1677	unsigned long long fbf_paddr; // fbf physical address
1678	unsigned long long fbf_sts_paddr; // fbf status physical address
1679	unsigned long long buf0_pbase; // buffer 0 base physical address
1680	unsigned long long sts0_paddr; // buffer 0 status physical address
1681	unsigned long long buf1_pbase; // buffer 1 base physical address
1682	unsigned long long sts1_paddr; // buffer 1 status physical address
1683
1684	// get channel index
1685	unsigned int channel = _get_context_slot( CTX_CMA_FB_ID );
1686
1687	if ( channel >= NB_CMA_CHANNELS )
1688	{
1689	_printf("\n[GIET ERROR] in _sys_fbf_cma_init_buf() : CMA channel index too large\n");
1690	return -1;
1691	}
1692
1693	#if GIET_DEBUG_FBF_CMA
1694	_printf("\n[FBF_CMA DEBUG] enters _sys_fbf_cma_init_buf()\n"
1695	" - channel = %d\n"
1696	" - buf0 vbase = %x\n"
1697	" - buf1 vbase = %x\n"
1698	" - sts0 vaddr = %x\n"
1699	" - sts1 vaddr = %x\n",
1700	channel,
1701	(unsigned int)buf0_vbase,
1702	(unsigned int)buf1_vbase,
1703	(unsigned int)sts0_vaddr,
1704	(unsigned int)sts1_vaddr );
1705	#endif
1706
1707	// checking user buffers virtual addresses alignment
1708	if ( ((unsigned int)buf0_vbase & 0x3F) \|\|
1709	((unsigned int)buf1_vbase & 0x3F) )
1710	{
1711	_printf("\n[GIET ERROR] in _sys_fbf_cma_init_buf() : user buffer not aligned\n");
1712	return -1;
1713	}
1714
1715	// checking user buffers status virtual addresses alignment
1716	if ( ((unsigned int)sts0_vaddr & 0x3F) \|\|
1717	((unsigned int)sts1_vaddr & 0x3F) )
1718	{
1719	_printf("\n[GIET ERROR] in _sys_fbf_cma_init_buf() : user status not aligned\n");
1720	return -1;
1721	}
1722
1723	// compute frame buffer physical address and initialize _fbf_chbuf[channel]
1724	vaddr = (unsigned int)SEG_FBF_BASE;
1725	fbf_paddr = _v2p_translate( vaddr , &flags );
1726	vaddr = (unsigned int)&_fbf_status[channel];
1727	fbf_sts_paddr = _v2p_translate( vaddr , &flags );
1728
1729	_fbf_chbuf[channel].fbf_desc =
1730	(unsigned long long) ((fbf_sts_paddr & 0xFFFFFFFFULL) >> 6) +
1731	(((fbf_paddr & 0xFFFFFFFFULL) >> 6 ) << 26);
1732
1733	// Compute user buffer 0 physical addresses and intialize _fbf_chbuf[channel]
1734	vaddr = (unsigned int)buf0_vbase;
1735	buf0_pbase = _v2p_translate( vaddr , &flags );
1736	if ((flags & PTE_U) == 0)
1737	{
1738	_printf("\n[GIET ERROR] in _sys_fbf_cma_init_buf() : buf0 not in user space\n");
1739	return -1;
1740	}
1741
1742	vaddr = (unsigned int)sts0_vaddr;
1743	sts0_paddr = _v2p_translate( vaddr , &flags );
1744	if ((flags & PTE_U) == 0)
1745	{
1746	_printf("\n[GIET ERROR] in _sys_fbf_cma_init_buf() : sts0 not in user space\n");
1747	return -1;
1748	}
1749
1750	_fbf_chbuf[channel].buf0_desc =
1751	(unsigned long long) ((sts0_paddr & 0xFFFFFFFFULL) >> 6) +
1752	(((buf0_pbase & 0xFFFFFFFFULL) >> 6 ) << 26);
1753
1754	// Compute user buffer 1 physical addresses and intialize _fbf_chbuf[channel]
1755	vaddr = (unsigned int)buf1_vbase;
1756	buf1_pbase = _v2p_translate( vaddr , &flags );
1757	if ((flags & PTE_U) == 0)
1758	{
1759	_printf("\n[GIET ERROR] in _sys_fbf_cma_init_buf() : buf1 not in user space\n");
1760	return -1;
1761	}
1762
1763	vaddr = (unsigned int)sts1_vaddr;
1764	sts1_paddr = _v2p_translate( vaddr , &flags );
1765	if ((flags & PTE_U) == 0)
1766	{
1767	_printf("\n[GIET ERROR] in _sys_fbf_cma_init_buf() : sts1 not in user space\n");
1768	return -1;
1769	}
1770
1771	_fbf_chbuf[channel].buf1_desc =
1772	(unsigned long long) ((sts1_paddr & 0xFFFFFFFFULL) >> 6) +
1773	(((buf1_pbase & 0xFFFFFFFFULL) >> 6 ) << 26);
1774
1775	// Compute and register physical adress of the fbf_chbuf descriptor
1776	vaddr = (unsigned int)&_fbf_chbuf[channel];
1777	_fbf_chbuf_paddr[channel] = _v2p_translate( vaddr , &flags );
1778
1779	#if GIET_DEBUG_FBF_CMA
1780	_printf(" - fbf pbase = %l\n"
1781	" - fbf status paddr = %l\n"
1782	" - buf0 pbase = %l\n"
1783	" - buf0 status paddr = %l\n"
1784	" - buf1 pbase = %l\n"
1785	" - buf0 status paddr = %l\n"
1786	" - chbuf pbase = %l\n",
1787	fbf_paddr,
1788	fbf_sts_paddr,
1789	buf0_pbase,
1790	sts0_paddr,
1791	buf1_pbase,
1792	sts1_paddr,
1793	_fbf_chbuf_paddr[channel] );
1794	#endif
1795
1796	return 0;
1797
1798	#else
1799
1800	_printf("\n[GIET ERROR] in _sys_fbf_cma_init_buf() : NB_CMA_CHANNELS = 0\n");
1801	return -1;
1802
1803	#endif
1804	} // end sys_fbf_cma_init_buf()
1805
1806	////////////////////////////////////////////
1807	int _sys_fbf_cma_start( unsigned int length )
1808	{
1809	#if NB_CMA_CHANNELS > 0
1810
1811	// get channel index
1812	unsigned int channel = _get_context_slot( CTX_CMA_FB_ID );
1813
1814	if ( channel >= NB_CMA_CHANNELS )
1815	{
1816	_printf("\n[GIET ERROR] in _fbf_cma_start() : CMA channel index too large\n");
1817	return -1;
1818	}
1819
1820	// check buffers initialization
1821	if ( ( _fbf_chbuf[channel].buf0_desc == 0x0ULL ) &&
1822	( _fbf_chbuf[channel].buf1_desc == 0x0ULL) &&
1823	( _fbf_chbuf[channel].fbf_desc == 0x0ULL) )
1824	{
1825	_printf("\n[GIET ERROR] in _sys_fbf_cma_start() :\n"
1826	"Buffer initialization has not been done\n");
1827	return -1;
1828	}
1829
1830	// initializes buffer length
1831	_fbf_chbuf[channel].length = length;
1832
1833	if ( USE_IOB )
1834	{
1835	// SYNC request for fbf_chbuf descriptor
1836	_mmc_sync( _fbf_chbuf_paddr[channel] , sizeof( fbf_chbuf_t ) );
1837	}
1838
1839	// start CMA transfer
1840	unsigned long long paddr = _fbf_chbuf_paddr[channel];
1841	unsigned int src_chbuf_paddr_lsb = (unsigned int)(paddr & 0xFFFFFFFF);
1842	unsigned int src_chbuf_paddr_ext = (unsigned int)(paddr >> 32);
1843	unsigned int dst_chbuf_paddr_lsb = src_chbuf_paddr_lsb + 16;
1844	unsigned int dst_chbuf_paddr_ext = src_chbuf_paddr_ext;
1845
1846	_cma_set_register( channel, CHBUF_SRC_DESC , src_chbuf_paddr_lsb );
1847	_cma_set_register( channel, CHBUF_SRC_EXT , src_chbuf_paddr_ext );
1848	_cma_set_register( channel, CHBUF_SRC_NBUFS, 2 );
1849	_cma_set_register( channel, CHBUF_DST_DESC , dst_chbuf_paddr_lsb );
1850	_cma_set_register( channel, CHBUF_DST_EXT , dst_chbuf_paddr_ext );
1851	_cma_set_register( channel, CHBUF_DST_NBUFS, 1 );
1852	_cma_set_register( channel, CHBUF_BUF_SIZE , length );
1853	_cma_set_register( channel, CHBUF_PERIOD , 300 );
1854	_cma_set_register( channel, CHBUF_RUN , 1 );
1855
1856	return 0;
1857
1858	#else
1859
1860	_printf("\n[GIET ERROR] in _sys_fbf_cma_start() : NB_CMA_CHANNELS = 0\n");
1861	return -1;
1862
1863	#endif
1864	} // end _sys_fbf_cma_start()
1865
1866	/////////////////////////////////////////////////////
1867	int _sys_fbf_cma_display( unsigned int buffer_index )
1868	{
1869	#if NB_CMA_CHANNELS > 0
1870
1871	volatile unsigned int full = 1;
1872
1873	// get channel index
1874	unsigned int channel = _get_context_slot( CTX_CMA_FB_ID );
1875
1876	if ( channel >= NB_CMA_CHANNELS )
1877	{
1878	_printf("\n[GIET ERROR] in _sys_fbf_cma_display() : "
1879	"CMA channel index too large\n");
1880	return -1;
1881	}
1882
1883	// get fbf_chbuf descriptor pointer
1884	fbf_chbuf_t* pdesc = &_fbf_chbuf[channel];
1885
1886	#if GIET_DEBUG_FBF_CMA
1887	_printf("\n[FBF_CMA DEBUG] enters _sys_fb_cma_display()\n"
1888	" - cma channel = %d\n"
1889	" - buffer index = %d\n"
1890	" - buf0_desc value = %l\n"
1891	" - buf1_desc value = %l\n"
1892	" - fbf_desc value = %l\n",
1893	channel , buffer_index,
1894	_fbf_chbuf[channel].buf0_desc,
1895	_fbf_chbuf[channel].buf1_desc,
1896	_fbf_chbuf[channel].fbf_desc );
1897	#endif
1898
1899	unsigned long long buf_sts_paddr;
1900	unsigned long long buf_paddr;
1901	unsigned long long fbf_sts_paddr;
1902
1903	if ( buffer_index == 0 ) // user buffer 0
1904	{
1905	buf_sts_paddr =
1906	((pdesc->buf0_desc & 0xFFF0000000000000ULL) >> 20) + // compute address extension
1907	((pdesc->buf0_desc & 0x3FFFFFFULL) << 6); // compute 32 LSB of the address
1908
1909	buf_paddr =
1910	(pdesc->buf0_desc & 0xFFFFFFFFFC000000ULL) >> 20; // compute the entire address
1911	}
1912	else // user buffer 1
1913	{
1914	buf_sts_paddr =
1915	((pdesc->buf1_desc & 0xFFF0000000000000ULL) >> 20) +
1916	((pdesc->buf1_desc & 0x3FFFFFFULL) << 6);
1917
1918	buf_paddr =
1919	(pdesc->buf1_desc & 0xFFFFFFFFFC000000ULL) >> 20;
1920	}
1921
1922	fbf_sts_paddr =
1923	((pdesc->fbf_desc & 0xFFF0000000000000ULL) >> 20) +
1924	((pdesc->fbf_desc & 0x3FFFFFFULL) << 6);
1925
1926	#if GIET_DEBUG_FBF_CMA
1927	_printf(" - fbf status paddr = %l\n"
1928	" - buf pbase = %l\n"
1929	" - buf status paddr = %l\n",
1930	fbf_sts_paddr,
1931	buf_paddr,
1932	buf_sts_paddr );
1933	#endif
1934
1935	// waiting user buffer released by the CMA component)
1936	while ( full )
1937	{
1938	// INVAL L2 cache copy of user buffer status
1939	// because it has been modified in RAM by the CMA component
1940	_mmc_inval( buf_sts_paddr , 4 );
1941
1942	full = _physical_read( buf_sts_paddr );
1943	}
1944
1945	// SYNC request for the user buffer, because
1946	// it will be read from XRAM by the CMA component
1947	_mmc_sync( buf_paddr , pdesc->length );
1948
1949	// set user buffer status
1950	_physical_write( buf_sts_paddr, 0x1 );
1951
1952	// reset fbf buffer status
1953	_physical_write( fbf_sts_paddr, 0x0 );
1954
1955	// SYNC request, because these buffer descriptors
1956	// will be read from XRAM by the CMA component
1957	_mmc_sync( buf_sts_paddr, 4 );
1958	_mmc_sync( fbf_sts_paddr, 4 );
1959
1960	return 0;
1961
1962	#else
1963
1964	_printf("\n[GIET ERROR] in _sys_fbf_cma_display() : no CMA channel allocated\n");
1965	return -1;
1966
1967	#endif
1968	} // end _sys_fbf_cma_display()
1969
1970	///////////////////////
1971	int _sys_fbf_cma_stop()
1972	{
1973	#if NB_CMA_CHANNELS > 0
1974
1975	// get channel index
1976	unsigned int channel = _get_context_slot( CTX_CMA_FB_ID );
1977
1978	if ( channel >= NB_CMA_CHANNELS )
1979	{
1980	_printf("\n[GIET ERROR] in _sys_fbf_cma_stop() : CMA channel index too large\n");
1981	return -1;
1982	}
1983
1984	// Desactivate CMA channel
1985	_cma_set_register( channel, CHBUF_RUN, 0 );
1986
1987	return 0;
1988
1989	#else
1990
1991	_printf("\n[GIET ERROR] in _sys_fbf_cma_stop() : no CMA channel allocated\n");
1992	return -1;
1993
1994	#endif
1995	} // end _sys_fbf_cma_stop()
1996
1997
1998	//////////////////////////////////////////////////////////////////////////////
1999	// Miscelaneous syscall handlers
2000	//////////////////////////////////////////////////////////////////////////////
2001
2002	///////////////
2003	int _sys_ukn()
2004	{
2005	_printf("\n[GIET ERROR] Undefined System Call / EPC = %x\n", _get_epc() );
2006	return -1;
2007	}
2008
2009	////////////////////////////////////
2010	int _sys_proc_xyp( unsigned int* x,
2011	unsigned int* y,
2012	unsigned int* p )
2013	{
2014	unsigned int gpid = _get_procid(); // global processor index from CPO register
2015
2016	*x = (gpid >> (Y_WIDTH + P_WIDTH)) & ((1<<X_WIDTH)-1);
2017	*y = (gpid >> P_WIDTH) & ((1<<Y_WIDTH)-1);
2018	*p = gpid & ((1<<P_WIDTH)-1);
2019
2020	return 0;
2021	}
2022
2023	//////////////////////////////////
2024	int _sys_task_exit( char* string )
2025	{
2026	unsigned int date = _get_proctime();
2027
2028	unsigned int gpid = _get_procid();
2029	unsigned int cluster_xy = gpid >> P_WIDTH;
2030	unsigned int y = cluster_xy & ((1<<Y_WIDTH)-1);
2031	unsigned int x = cluster_xy >> Y_WIDTH;
2032	unsigned int p = gpid & ((1<<P_WIDTH)-1);
2033
2034	unsigned int ltid = _get_context_slot(CTX_LTID_ID);
2035
2036	// print exit message
2037	_printf("\n[GIET] Exit task %d on processor[%d,%d,%d] at cycle %d"
2038	"\n Cause : %s\n\n",
2039	ltid, x, y, p, date, string );
2040
2041	// set NORUN_MASK_TASK bit (non runnable state)
2042	static_scheduler_t* psched = (static_scheduler_t*)_schedulers[x][y][p];
2043	unsigned int* ptr = &psched->context[ltid][CTX_NORUN_ID];
2044	_atomic_or( ptr , NORUN_MASK_TASK );
2045
2046	// deschedule
2047	_sys_context_switch();
2048
2049	return 0;
2050	}
2051
2052	/////////////////////////
2053	int _sys_context_switch()
2054	{
2055	unsigned int save_sr;
2056
2057	_it_disable( &save_sr );
2058	_ctx_switch();
2059	_it_restore( &save_sr );
2060
2061	return 0;
2062	}
2063
2064	////////////////////////
2065	int _sys_local_task_id()
2066	{
2067	return _get_context_slot(CTX_LTID_ID);
2068	}
2069
2070	/////////////////////////
2071	int _sys_global_task_id()
2072	{
2073	return _get_context_slot(CTX_GTID_ID);
2074	}
2075
2076	////////////////////
2077	int _sys_thread_id()
2078	{
2079	return _get_context_slot(CTX_TRDID_ID);
2080	}
2081
2082	////////////////////////////////////////////
2083	int _sys_procs_number( unsigned int* x_size,
2084	unsigned int* y_size,
2085	unsigned int* nprocs )
2086	{
2087	mapping_header_t * header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
2088	mapping_cluster_t * cluster = _get_cluster_base(header);
2089
2090	unsigned int x;
2091	unsigned int y;
2092	unsigned int okmin = 1;
2093	unsigned int okmax = 1;
2094
2095	// compute max values
2096	unsigned int xmax = header->x_size;
2097	unsigned int ymax = header->y_size;
2098	unsigned int procs = cluster[0].procs;
2099
2100	// check the (ymax-1) lower rows
2101	for ( y = 0 ; y < ymax-1 ; y++ )
2102	{
2103	for ( x = 0 ; x < xmax ; x++ )
2104	{
2105	if (cluster[x*ymax+y].procs != procs ) okmin = 0;
2106	}
2107	}
2108
2109	// check the upper row
2110	for ( x = 0 ; x < xmax ; x++ )
2111	{
2112	if (cluster[x*ymax+ymax-1].procs != procs ) okmax = 0;
2113	}
2114
2115	// return values
2116	if ( okmin && okmax )
2117	{
2118	*x_size = xmax;
2119	*y_size = ymax;
2120	*nprocs = procs;
2121	}
2122	else if ( okmin )
2123	{
2124	*x_size = xmax;
2125	*y_size = ymax-1;
2126	*nprocs = procs;
2127	}
2128	else
2129	{
2130	*x_size = 0;
2131	*y_size = 0;
2132	*nprocs = 0;
2133	}
2134	return 0;
2135	}
2136
2137	///////////////////////////////////////////////////////
2138	int _sys_vseg_get_vbase( char* vspace_name,
2139	char* vseg_name,
2140	unsigned int* vbase )
2141	{
2142	mapping_header_t * header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
2143	mapping_vspace_t * vspace = _get_vspace_base(header);
2144	mapping_vseg_t * vseg = _get_vseg_base(header);
2145
2146	unsigned int vspace_id;
2147	unsigned int vseg_id;
2148
2149	// scan vspaces
2150	for (vspace_id = 0; vspace_id < header->vspaces; vspace_id++)
2151	{
2152	if (_strncmp( vspace[vspace_id].name, vspace_name, 31) == 0)
2153	{
2154	// scan vsegs
2155	for (vseg_id = vspace[vspace_id].vseg_offset;
2156	vseg_id < (vspace[vspace_id].vseg_offset + vspace[vspace_id].vsegs);
2157	vseg_id++)
2158	{
2159	if (_strncmp(vseg[vseg_id].name, vseg_name, 31) == 0)
2160	{
2161	*vbase = vseg[vseg_id].vbase;
2162	return 0;
2163	}
2164	}
2165	}
2166	}
2167	return -1; // not found
2168	}
2169
2170	/////////////////////////////////////////////////////////
2171	int _sys_vseg_get_length( char* vspace_name,
2172	char* vseg_name,
2173	unsigned int* length )
2174	{
2175	mapping_header_t * header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
2176	mapping_vspace_t * vspace = _get_vspace_base(header);
2177	mapping_vseg_t * vseg = _get_vseg_base(header);
2178
2179	unsigned int vspace_id;
2180	unsigned int vseg_id;
2181
2182	// scan vspaces
2183	for (vspace_id = 0; vspace_id < header->vspaces; vspace_id++)
2184	{
2185	if (_strncmp( vspace[vspace_id].name, vspace_name, 31) == 0)
2186	{
2187	// scan vsegs
2188	for (vseg_id = vspace[vspace_id].vseg_offset;
2189	vseg_id < (vspace[vspace_id].vseg_offset + vspace[vspace_id].vsegs);
2190	vseg_id++)
2191	{
2192	if (_strncmp(vseg[vseg_id].name, vseg_name, 31) == 0)
2193	{
2194	*length = vseg[vseg_id].length;
2195	return 0;
2196	}
2197	}
2198	}
2199	}
2200	return -1; // not found
2201	}
2202
2203	////////////////////////////////////////
2204	int _sys_xy_from_ptr( void* ptr,
2205	unsigned int* x,
2206	unsigned int* y )
2207	{
2208	unsigned int flags;
2209	unsigned long long paddr = _v2p_translate( (unsigned int)ptr , &flags );
2210
2211	*x = (paddr>>36) & 0xF;
2212	*y = (paddr>>32) & 0xF;
2213
2214	return 0;
2215	}
2216
2217	/////////////////////////////////////////
2218	int _sys_heap_info( unsigned int* vaddr,
2219	unsigned int* length,
2220	unsigned int x,
2221	unsigned int y )
2222	{
2223	mapping_header_t * header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
2224	mapping_task_t * task = _get_task_base(header);
2225	mapping_vseg_t * vseg = _get_vseg_base(header);
2226	mapping_vspace_t * vspace = _get_vspace_base(header);
2227
2228	unsigned int task_id;
2229	unsigned int vspace_id;
2230	unsigned int vseg_id = 0xFFFFFFFF;
2231
2232	// searching the heap vseg
2233	if ( (x < X_SIZE) && (y < Y_SIZE) ) // searching a task in cluster(x,y)
2234	{
2235	// get vspace global index
2236	vspace_id = _get_context_slot(CTX_VSID_ID);
2237
2238	// scan all tasks in vspace
2239	unsigned int min = vspace[vspace_id].task_offset ;
2240	unsigned int max = min + vspace[vspace_id].tasks ;
2241	for ( task_id = min ; task_id < max ; task_id++ )
2242	{
2243	if ( task[task_id].clusterid == (x * Y_SIZE + y) )
2244	{
2245	vseg_id = task[task_id].heap_vseg_id;
2246	if ( vseg_id != 0xFFFFFFFF ) break;
2247	}
2248	}
2249	}
2250	else // searching in the calling task
2251	{
2252	task_id = _get_context_slot(CTX_GTID_ID);
2253	vseg_id = task[task_id].heap_vseg_id;
2254	}
2255
2256	// analysing the vseg_id
2257	if ( vseg_id != 0xFFFFFFFF )
2258	{
2259	*vaddr = vseg[vseg_id].vbase;
2260	*length = vseg[vseg_id].length;
2261	return 0;
2262	}
2263	else
2264	{
2265	*vaddr = 0;
2266	*length = 0;
2267	return -1;
2268	}
2269	} // end _sys_heap_info()
2270
2271
2272	///////////////////////
2273	int _sys_tasks_status()
2274	{
2275	mapping_header_t * header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
2276	mapping_task_t * task = _get_task_base(header);
2277	mapping_vspace_t * vspace = _get_vspace_base(header);
2278	mapping_cluster_t * cluster = _get_cluster_base(header);
2279
2280	unsigned int task_id;
2281	unsigned int vspace_id;
2282
2283	// scan all vspaces
2284	for( vspace_id = 0 ; vspace_id < header->vspaces ; vspace_id++ )
2285	{
2286	_printf("\n*** vspace %s\n", vspace[vspace_id].name );
2287
2288	// scan all tasks in vspace
2289	unsigned int min = vspace[vspace_id].task_offset ;
2290	unsigned int max = min + vspace[vspace_id].tasks ;
2291	for ( task_id = min ; task_id < max ; task_id++ )
2292	{
2293	unsigned int clusterid = task[task_id].clusterid;
2294	unsigned int p = task[task_id].proclocid;
2295	unsigned int x = cluster[clusterid].x;
2296	unsigned int y = cluster[clusterid].y;
2297	unsigned int ltid = task[task_id].ltid;
2298	static_scheduler_t* psched = (static_scheduler_t*)_schedulers[x][y][p];
2299	unsigned int norun = psched->context[ltid][CTX_NORUN_ID];
2300	unsigned int current = psched->current;
2301
2302	if ( current == ltid )
2303	_printf(" - task %s on P[%d,%d,%d] : running\n", task[task_id].name, x, y, p );
2304	else if ( norun == 0 )
2305	_printf(" - task %s on P[%d,%d,%d] : runable\n", task[task_id].name, x, y, p );
2306	else
2307	_printf(" - task %s on P[%d,%d,%d] : blocked\n", task[task_id].name, x, y, p );
2308	}
2309	}
2310	return 0;
2311	} // end _sys_tasks_status()
2312
2313
2314
2315	// Local Variables:
2316	// tab-width: 4
2317	// c-basic-offset: 4
2318	// c-file-offsets:((innamespace . 0)(inline-open . 0))
2319	// indent-tabs-mode: nil
2320	// End:
2321	// vim: filetype=c:expandtab:shiftwidth=4:tabstop=4:softtabstop=4
2322

Note: See TracBrowser for help on using the repository browser.

Download in other formats: