Context Navigation

source: soft/giet_vm/giet_kernel/sys_handler.c @ 697

Last change on this file since 697 was 697, checked in by guerin, 9 years ago

kernel: release WTI mailbox associated with TTY

We don't block on giet_tty_alloc() anymore when launching the same app
again and again.

Property svn:executable set to *

File size: 75.3 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_allocator = 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	// get a new TTY terminal index
747	unsigned int channel = _atomic_increment( &_tty_channel_allocator, 1 );
748
749	if ( channel >= NB_TTY_CHANNELS )
750	{
751	_atomic_increment( &_tty_channel_allocator , 0xFFFFFFFF );
752	_printf("\n[GIET_ERROR] in _sys_tty_alloc() : not enough TTY channels\n");
753	return -1;
754	}
755
756	// reset kernel buffer for allocated TTY channel
757	_tty_rx_full[channel] = 0;
758
759	// allocate a WTI mailbox to the calling proc if external IRQ
760	unsigned int unused;
761	if ( USE_PIC ) _ext_irq_alloc( ISR_TTY_RX , channel , &unused );
762
763	// update CTX_TTY_ID
764	if ( shared ) // for all tasks in the same vspace
765	{
766	unsigned int vspace_id = _get_context_slot( CTX_VSID_ID );
767	mapping_header_t header = (mapping_header_t )SEG_BOOT_MAPPING_BASE;
768	mapping_vspace_t *vspace = _get_vspace_base(header);
769	mapping_task_t *task = _get_task_base(header);
770
771	// scan tasks in vspace
772	unsigned int task_id;
773	for (task_id = vspace[vspace_id].task_offset;
774	task_id < (vspace[vspace_id].task_offset + vspace[vspace_id].tasks);
775	task_id++)
776	{
777	unsigned int y_size = header->y_size;
778	unsigned int cid = task[task_id].clusterid;
779	unsigned int x = cid / y_size;
780	unsigned int y = cid % y_size;
781	unsigned int p = task[task_id].proclocid;
782	unsigned int ltid = task[task_id].ltid;
783	static_scheduler_t* psched = (static_scheduler_t*)_schedulers[x][y][p];
784	psched->context[ltid][CTX_TTY_ID] = channel;
785	}
786	}
787	else // for calling task only
788	{
789	_set_context_slot( CTX_TTY_ID, channel );
790	}
791
792	return 0;
793	}
794
795	/////////////////////////////////////////
796	// NOTE: not a syscall
797	int _sys_tty_release()
798	{
799	// release WTI mailbox
800	if ( USE_PIC ) _ext_irq_release( ISR_TTY_RX , _get_context_slot( CTX_TTY_ID ) );
801
802	// release one TTY terminal
803	_atomic_increment( &_tty_channel_allocator , 0xFFFFFFFF );
804
805	return 0;
806	}
807
808	/////////////////////////////////////////////////
809	int _sys_tty_write( const char* buffer,
810	unsigned int length, // number of characters
811	unsigned int channel) // channel index
812	{
813	unsigned int nwritten;
814
815	// compute and check tty channel
816	if( channel == 0xFFFFFFFF ) channel = _get_context_slot(CTX_TTY_ID);
817	if( channel >= NB_TTY_CHANNELS ) return -1;
818
819	// write string to TTY channel
820	for (nwritten = 0; nwritten < length; nwritten++)
821	{
822	// check tty's status
823	if ( _tty_get_register( channel, TTY_STATUS ) & 0x2 ) break;
824
825	// write one byte
826	if (buffer[nwritten] == '\n')
827	{
828	_tty_set_register( channel, TTY_WRITE, (unsigned int)'\r' );
829	}
830	_tty_set_register( channel, TTY_WRITE, (unsigned int)buffer[nwritten] );
831	}
832
833	return nwritten;
834	}
835
836	////////////////////////////////////////////////
837	int _sys_tty_read( char* buffer,
838	unsigned int length, // unused
839	unsigned int channel) // channel index
840	{
841	// compute and check tty channel
842	if( channel == 0xFFFFFFFF ) channel = _get_context_slot(CTX_TTY_ID);
843	if( channel >= NB_TTY_CHANNELS ) return -1;
844
845	// read one character from TTY channel
846	if (_tty_rx_full[channel] == 0)
847	{
848	return 0;
849	}
850	else
851	{
852	*buffer = _tty_rx_buf[channel];
853	_tty_rx_full[channel] = 0;
854	return 1;
855	}
856	}
857
858	///////////////////////////////////////////
859	int _sys_tty_get_lock( unsigned int channel, // unused
860	unsigned int * save_sr_ptr )
861	{
862	// check tty channel
863	if( channel != 0 ) return 1;
864
865	_it_disable( save_sr_ptr );
866	_sqt_lock_acquire( &_tty0_sqt_lock );
867	return 0;
868	}
869
870	///////////////////////////////////////////////
871	int _sys_tty_release_lock( unsigned int channel,
872	unsigned int * save_sr_ptr )
873	{
874	// check tty channel
875	if( channel != 0 ) return 1;
876
877	_sqt_lock_release( &_tty0_sqt_lock );
878	_it_restore( save_sr_ptr );
879	return 0;
880	}
881
882	//////////////////////////////////////////////////////////////////////////////
883	// TIM related syscall handlers
884	//////////////////////////////////////////////////////////////////////////////
885
886	////////////////////
887	int _sys_tim_alloc()
888	{
889	// get a new timer index
890	unsigned int channel = _atomic_increment( &_tim_channel_allocator, 1 );
891
892	if ( channel >= NB_TIM_CHANNELS )
893	{
894	_printf("\n[GIET_ERROR] in _sys_tim_alloc() : not enough TIM channels\n");
895	return -1;
896	}
897	else
898	{
899	_set_context_slot( CTX_TIM_ID, channel );
900	return 0;
901	}
902	}
903
904	////////////////////
905	// NOTE: not a syscall
906	int _sys_tim_release()
907	{
908	// release one timer
909	_atomic_increment( &_tim_channel_allocator, 0xFFFFFFFF );
910
911	return 0;
912	}
913
914	/////////////////////////////////////////
915	int _sys_tim_start( unsigned int period )
916	{
917	// get timer index
918	unsigned int channel = _get_context_slot( CTX_TIM_ID );
919	if ( channel >= NB_TIM_CHANNELS )
920	{
921	_printf("\n[GIET_ERROR] in _sys_tim_start() : not enough TIM channels\n");
922	return -1;
923	}
924
925	// start timer
926	_timer_start( channel, period );
927
928	return 0;
929	}
930
931	///////////////////
932	int _sys_tim_stop()
933	{
934	// get timer index
935	unsigned int channel = _get_context_slot( CTX_TIM_ID );
936	if ( channel >= NB_TIM_CHANNELS )
937	{
938	_printf("\n[GIET_ERROR] in _sys_tim_stop() : illegal timer index\n");
939	return -1;
940	}
941
942	// stop timer
943	_timer_stop( channel );
944
945	return 0;
946	}
947
948	//////////////////////////////////////////////////////////////////////////////
949	// NIC related syscall handlers
950	//////////////////////////////////////////////////////////////////////////////
951
952	#define NIC_CONTAINER_SIZE 4096
953
954	////////////////////////////////////////
955	int _sys_nic_alloc( unsigned int is_rx,
956	unsigned int xmax,
957	unsigned int ymax )
958	{
959	// check xmax / ymax parameters
960	if ( xmax > X_SIZE )
961	{
962	_printf("\n[GIET_ERROR] in _sys_nic_alloc() xmax argument too large\n");
963	return -1;
964	}
965	if ( ymax > Y_SIZE )
966	{
967	_printf("\n[GIET_ERROR] in _sys_nic_alloc() ymax argument too large\n");
968	return -1;
969	}
970
971	////////////////////////////////////////////////////////
972	// Step 1: get and register CMA and NIC channel index //
973	////////////////////////////////////////////////////////
974
975	// get a NIC_RX or NIC_TX channel index
976	unsigned int nic_channel;
977	unsigned int cma_channel;
978
979	if ( is_rx ) nic_channel = _atomic_increment( &_nic_rx_channel_allocator, 1 );
980	else nic_channel = _atomic_increment( &_nic_tx_channel_allocator, 1 );
981
982	if ( (nic_channel >= NB_NIC_CHANNELS) )
983	{
984	_printf("\n[GIET_ERROR] in _sys_nic_alloc() not enough NIC channels\n");
985	return -1;
986	}
987
988	// get a CMA channel index
989	cma_channel = _atomic_increment( &_cma_channel_allocator, 1 );
990
991	if ( cma_channel >= NB_CMA_CHANNELS )
992	{
993	_printf("\n[GIET_ERROR] in _sys_nic_alloc() not enough CMA channels\n");
994	return -1;
995	}
996
997	#if GIET_DEBUG_NIC
998	unsigned int thread = _get_context_slot( CTX_TRDID_ID );
999	_printf("\n[GIET DEBUG NIC] Task %d enters sys_nic_alloc() at cycle %d\n"
1000	" nic_channel = %d / cma_channel = %d\n",
1001	thread , _get_proctime() , nic_channel , cma_channel );
1002	#endif
1003
1004	// register nic_index and cma_index in task context
1005	if ( is_rx )
1006	{
1007	_set_context_slot( CTX_NIC_RX_ID, nic_channel );
1008	_set_context_slot( CTX_CMA_RX_ID, cma_channel );
1009	}
1010	else
1011	{
1012	_set_context_slot( CTX_NIC_TX_ID, nic_channel );
1013	_set_context_slot( CTX_CMA_TX_ID, cma_channel );
1014	}
1015
1016	/////////////////////////////////////////////////////////////////////////////////
1017	// Step 2: loop on all the clusters //
1018	// Allocate the kernel containers and status, compute the container and the //
1019	// status physical addresses, fill and synchronize the kernel CHBUF descriptor //
1020	/////////////////////////////////////////////////////////////////////////////////
1021
1022	// physical addresses to be registered in the CMA registers
1023	unsigned long long nic_chbuf_pbase; // NIC chbuf physical address
1024	unsigned long long ker_chbuf_pbase; // kernel chbuf physical address
1025
1026	// allocate one kernel container and one status variable per cluster in the
1027	// (xmax / ymax) mesh
1028	unsigned int cx; // cluster X coordinate
1029	unsigned int cy; // cluster Y coordinate
1030	unsigned int index; // container index in chbuf
1031	unsigned int vaddr; // virtual address
1032	unsigned long long cont_paddr; // container physical address
1033	unsigned long long sts_paddr; // container status physical address
1034
1035	unsigned int flags; // for _v2p_translate()
1036
1037	for ( cx = 0 ; cx < xmax ; cx++ )
1038	{
1039	for ( cy = 0 ; cy < ymax ; cy++ )
1040	{
1041	// compute index in chbuf
1042	index = (cx * ymax) + cy;
1043
1044	// allocate the kernel container
1045	vaddr = (unsigned int)_remote_malloc( NIC_CONTAINER_SIZE, cx, cy );
1046
1047	if ( vaddr == 0 ) // not enough kernel heap memory in cluster[cx,cy]
1048	{
1049	_printf("\n[GIET_ERROR] in _sys_nic_alloc() not enough kenel heap"
1050	" in cluster[%d,%d]\n", cx, cy );
1051	return -1;
1052	}
1053
1054	// compute container physical address
1055	cont_paddr = _v2p_translate( vaddr , &flags );
1056
1057	// checking container address alignment
1058	if ( cont_paddr & 0x3F )
1059	{
1060	_printf("\n[GIET ERROR] in _sys_nic_alloc() : container address of cluster[%d,%d] not aligned\n",
1061	cx, cy);
1062	return -1;
1063	}
1064
1065	#if GIET_DEBUG_NIC
1066	_printf("\n[GIET DEBUG NIC] Task %d in _sys_nic_alloc()\n"
1067	" allocates in cluster[%d,%d]:\n"
1068	" - container vaddr = %x / paddr = %l\n",
1069	thread , cx , cy , vaddr, cont_paddr );
1070	#endif
1071
1072	// allocate the kernel container status
1073	// it occupies 64 bytes but only last bit is useful (1 for full and 0 for empty)
1074	vaddr = (unsigned int)_remote_malloc( 64, cx, cy );
1075
1076	if ( vaddr == 0 ) // not enough kernel heap memory in cluster[cx,cy]
1077	{
1078	_printf("\n[GIET_ERROR] in _sys_nic_alloc() not enough kenel heap"
1079	" in cluster[%d,%d]\n", cx, cy );
1080	return -1;
1081	}
1082
1083	// compute status physical address
1084	sts_paddr = _v2p_translate( vaddr , &flags );
1085
1086	// checking status address alignment
1087	if ( sts_paddr & 0x3F )
1088	{
1089	_printf("\n[GIET ERROR] in _sys_nic_alloc() : status address of cluster[%d,%d] not aligned\n",
1090	cx, cy);
1091	return -1;
1092	}
1093
1094	// initialize chbuf entry
1095	// The buffer descriptor has the following structure:
1096	// - the 26 LSB bits contain bits[6:31] of the buffer physical address
1097	// - the 26 following bits contain bits[6:31] of the physical address where the
1098	// buffer status is located
1099	// - the 12 MSB bits contain the common address extension of the buffer and its
1100	// status
1101	if ( is_rx )
1102	_nic_ker_rx_chbuf[nic_channel].buf_desc[index] =
1103	(unsigned long long)
1104	((sts_paddr & 0xFFFFFFFFULL) >> 6) +
1105	(((cont_paddr & 0xFFFFFFFFFFFULL) >> 6) << 26);
1106	else
1107	_nic_ker_tx_chbuf[nic_channel].buf_desc[index] =
1108	(unsigned long long)
1109	((sts_paddr & 0xFFFFFFC0ULL) >> 6) +
1110	(((cont_paddr & 0xFFFFFFFFFC0ULL) >> 6) << 26);
1111
1112	#if GIET_DEBUG_NIC
1113	_printf("\n[GIET DEBUG NIC] Task %d in _sys_nic_alloc()\n"
1114	" - status vaddr = %x / paddr = %l\n"
1115	" Buffer descriptor = %l\n",
1116	thread, vaddr, sts_paddr,
1117	(unsigned long long)((sts_paddr & 0xFFFFFFFFULL) >> 6) +
1118	(((cont_paddr & 0xFFFFFFFFFFFULL) >> 6) << 26) );
1119	#endif
1120	}
1121	}
1122
1123	// complete kernel chbuf initialisation
1124	if ( is_rx )
1125	{
1126	_nic_ker_rx_chbuf[nic_channel].xmax = xmax;
1127	_nic_ker_rx_chbuf[nic_channel].ymax = ymax;
1128	}
1129	else
1130	{
1131	_nic_ker_tx_chbuf[nic_channel].xmax = xmax;
1132	_nic_ker_tx_chbuf[nic_channel].ymax = ymax;
1133	}
1134
1135	// compute the kernel chbuf descriptor physical address
1136	if ( is_rx ) vaddr = (unsigned int)( &_nic_ker_rx_chbuf[nic_channel] );
1137	else vaddr = (unsigned int)( &_nic_ker_tx_chbuf[nic_channel] );
1138
1139	ker_chbuf_pbase = _v2p_translate( vaddr , &flags );
1140
1141	#if GIET_DEBUG_NIC
1142	_printf("\n[GIET DEBUG NIC] Task %d in _sys_nic_alloc() get kernel chbuf\n"
1143	" vaddr = %x / paddr = %l\n",
1144	thread , vaddr , ker_chbuf_pbase );
1145	#endif
1146
1147	// sync the kernel chbuf in L2 after write in L2
1148	_mmc_sync( ker_chbuf_pbase, sizeof( ker_chbuf_t ) );
1149
1150	///////////////////////////////////////////////////////////////
1151	// Step 3: compute the NIC chbuf descriptor physical address //
1152	///////////////////////////////////////////////////////////////
1153
1154	unsigned int offset;
1155	if ( is_rx ) offset = 0x4100;
1156	else offset = 0x4110;
1157	nic_chbuf_pbase = (((unsigned long long)((X_IO << Y_WIDTH) + Y_IO))<<32) \|
1158	(SEG_NIC_BASE + (nic_channel<<15) + offset);
1159
1160	#if GIET_DEBUG_NIC
1161	_printf("\n[GIET DEBUG NIC] Task %d in _sys_nic_alloc() get NIC chbuf : paddr = %l\n",
1162	thread , nic_chbuf_pbase );
1163	#endif
1164
1165	////////////////////////////////////////////////////////////////////////////////
1166	// Step 4: initialize CMA registers defining the source & destination chbufs //
1167	////////////////////////////////////////////////////////////////////////////////
1168
1169	if ( is_rx ) // NIC to kernel
1170	{
1171	_cma_set_register( cma_channel, CHBUF_SRC_DESC , (unsigned int)(nic_chbuf_pbase) );
1172	_cma_set_register( cma_channel, CHBUF_SRC_EXT , (unsigned int)(nic_chbuf_pbase>>32) );
1173	_cma_set_register( cma_channel, CHBUF_SRC_NBUFS, 2 );
1174	_cma_set_register( cma_channel, CHBUF_DST_DESC , (unsigned int)(ker_chbuf_pbase) );
1175	_cma_set_register( cma_channel, CHBUF_DST_EXT , (unsigned int)(ker_chbuf_pbase>>32) );
1176	_cma_set_register( cma_channel, CHBUF_DST_NBUFS, xmax * ymax );
1177	}
1178	else // kernel to NIC
1179	{
1180	_cma_set_register( cma_channel, CHBUF_SRC_DESC , (unsigned int)(ker_chbuf_pbase) );
1181	_cma_set_register( cma_channel, CHBUF_SRC_EXT , (unsigned int)(ker_chbuf_pbase>>32) );
1182	_cma_set_register( cma_channel, CHBUF_SRC_NBUFS, xmax * ymax );
1183	_cma_set_register( cma_channel, CHBUF_DST_DESC , (unsigned int)(nic_chbuf_pbase) );
1184	_cma_set_register( cma_channel, CHBUF_DST_EXT , (unsigned int)(nic_chbuf_pbase>>32) );
1185	_cma_set_register( cma_channel, CHBUF_DST_NBUFS, 2 );
1186	}
1187
1188	#if GIET_DEBUG_NIC
1189	_printf("\n[GIET DEBUG NIC] Task %d exit _sys_nic_alloc() at cycle %d\n",
1190	thread, _get_proctime() );
1191	#endif
1192
1193	return nic_channel;
1194	} // end _sys_nic_alloc()
1195
1196
1197	////////////////////////////////////////
1198	// NOTE: not a syscall
1199	int _sys_nic_release( unsigned int is_rx )
1200	{
1201	if ( is_rx )
1202	_atomic_increment( &_nic_rx_channel_allocator , 0xFFFFFFFF );
1203	else
1204	_atomic_increment( &_nic_tx_channel_allocator , 0xFFFFFFFF );
1205
1206	return 0;
1207	}
1208
1209
1210	////////////////////////////////////////
1211	int _sys_nic_start( unsigned int is_rx,
1212	unsigned int channel )
1213	{
1214	unsigned int nic_channel;
1215	unsigned int cma_channel;
1216
1217	// get NIC channel index and CMA channel index from task context
1218	if ( is_rx )
1219	{
1220	nic_channel = _get_context_slot( CTX_NIC_RX_ID );
1221	cma_channel = _get_context_slot( CTX_CMA_RX_ID );
1222	}
1223	else
1224	{
1225	nic_channel = _get_context_slot( CTX_NIC_TX_ID );
1226	cma_channel = _get_context_slot( CTX_CMA_TX_ID );
1227	}
1228
1229	#if GIET_DEBUG_NIC
1230	unsigned int thread = _get_context_slot( CTX_TRDID_ID );
1231	_printf("\n[GIET DEBUG NIC] Task %d in _sys_nic_start() at cycle %d\n"
1232	" get NIC channel = %d / CMA channel = %d\n",
1233	thread, _get_proctime(), nic_channel, cma_channel );
1234	#endif
1235
1236	// check NIC and CMA channels index
1237	if ( nic_channel != channel )
1238	{
1239	_printf("\n[GIET_ERROR] in _sys_nic_start(): illegal NIC channel\n");
1240	return -1;
1241	}
1242	if ( cma_channel >= NB_CMA_CHANNELS )
1243	{
1244	_printf("\n[GIET_ERROR] in _sys_nic_start(): illegal CMA channel\n");
1245	return -1;
1246	}
1247
1248	// start CMA transfer
1249	_cma_set_register( cma_channel, CHBUF_BUF_SIZE , NIC_CONTAINER_SIZE );
1250	_cma_set_register( cma_channel, CHBUF_PERIOD , 0 ); // OUT_OF_ORDER
1251	_cma_set_register( cma_channel, CHBUF_RUN , 1 );
1252
1253	// activates NIC channel
1254	_nic_channel_start( nic_channel, is_rx, GIET_NIC_MAC4, GIET_NIC_MAC2 );
1255
1256	#if GIET_DEBUG_NIC
1257	_printf("\n[GIET DEBUG NIC] Task %d exit _sys_nic_start() at cycle %d\n",
1258	thread , _get_proctime() );
1259	#endif
1260
1261	return 0;
1262	} // end _sys_nic_start()
1263
1264
1265	//////////////////////////////////////
1266	int _sys_nic_move( unsigned int is_rx,
1267	unsigned int channel,
1268	void* buffer )
1269	{
1270
1271	#if GIET_DEBUG_NIC
1272	unsigned int thread = _get_context_slot( CTX_TRDID_ID );
1273	_printf("\n[GIET DEBUG NIC] Task %d enters _sys_nic_move() at cycle %d\n",
1274	thread , _get_proctime() );
1275	#endif
1276
1277	// check NIC channel index
1278	if ( channel >= NB_NIC_CHANNELS )
1279	{
1280	_printf("\n[GIET_ERROR] in _sys_nic_move() : illegal NIC channel index\n");
1281	return -1;
1282	}
1283
1284	// get kernel chbuf virtual address
1285	ker_chbuf_t* ker_chbuf;
1286	if ( is_rx ) ker_chbuf = &_nic_ker_rx_chbuf[channel];
1287	else ker_chbuf = &_nic_ker_tx_chbuf[channel];
1288
1289	// get xmax / ymax parameters
1290	unsigned int xmax = ker_chbuf->xmax;
1291	unsigned int ymax = ker_chbuf->ymax;
1292
1293	// get cluster coordinates for the processor running the calling task
1294	unsigned int procid = _get_procid();
1295	unsigned int cx = procid >> (Y_WIDTH + P_WIDTH);
1296	unsigned int cy = (procid >> P_WIDTH) & ((1<<Y_WIDTH)-1);
1297
1298	// check processor coordinates / (xmax,ymax)
1299	if ( cx >= xmax )
1300	{
1301	_printf("\n[GIET_ERROR] in _sys_nic_move() : processor X coordinate = %d"
1302	" / xmax = %d\n", cx , xmax );
1303	return -1;
1304	}
1305	if ( cy >= ymax )
1306	{
1307	_printf("\n[GIET_ERROR] in _sys_nic_move() : processor Y coordinate = %d"
1308	" / ymax = %d\n", cy , ymax );
1309	return -1;
1310	}
1311
1312	unsigned long long usr_buf_paddr; // user buffer physical address
1313	unsigned long long ker_buf_paddr; // kernel buffer physical address
1314	unsigned long long ker_sts_paddr; // kernel buffer status physical address
1315	unsigned long long ker_buf_desc; // kernel buffer descriptor
1316	unsigned int ker_sts; // kernel buffer status (full or empty)
1317	unsigned int index; // kernel buffer index in chbuf
1318	unsigned int flags; // for _v2P_translate
1319
1320	// Compute user buffer physical address and check access rights
1321	usr_buf_paddr = _v2p_translate( (unsigned int)buffer , &flags );
1322
1323	if ( (flags & PTE_U) == 0 )
1324	{
1325	_printf("\n[GIET ERROR] in _sys_nic_tx_move() : illegal user buffer address\n");
1326	return -1;
1327	}
1328
1329	#if GIET_DEBUG_NIC
1330	_printf("\n[GIET DEBUG NIC] Task %d in _sys_nic_move() get user buffer : paddr = %l\n",
1331	thread, usr_buf_paddr );
1332	#endif
1333
1334	// compute buffer index, buffer descriptor paddr and buffer status paddr
1335	index = (ymax * cx) + cy;
1336	ker_buf_desc = ker_chbuf->buf_desc[index];
1337	ker_sts_paddr = ((ker_buf_desc & 0xFFF0000000000000ULL) >> 20) +
1338	((ker_buf_desc & 0x3FFFFFFULL) << 6);
1339
1340	#if GIET_DEBUG_NIC
1341	_printf("\n[GIET DEBUG NIC] Task %d in _sys_nic_move() read ker_buf_desc %d at cycle %d\n"
1342	" kernel buffer descriptor = %l\n",
1343	thread, index, _get_proctime(), ker_buf_desc );
1344	#endif
1345
1346	// poll local kernel container status until success
1347	while ( 1 )
1348	{
1349	// inval buffer descriptor in L2 before read in L2
1350	_mmc_inval( ker_sts_paddr, 4 );
1351	ker_sts = _physical_read( ker_sts_paddr );
1352
1353	#if GIET_DEBUG_NIC
1354	_printf("\n[GIET DEBUG NIC] Task %d in _sys_nic_move() read ker_buf_sts %d at cycle %d\n"
1355	" paddr = %l / kernel buffer status = %x\n",
1356	thread, index, _get_proctime(), ker_sts_paddr, ker_sts );
1357	#endif
1358
1359	// test buffer status and break if found
1360	if ( ( is_rx != 0 ) && ( ker_sts == 0x1 ) ) break;
1361	if ( ( is_rx == 0 ) && ( ker_sts == 0 ) ) break;
1362	}
1363
1364	// compute kernel buffer physical address
1365	ker_buf_paddr = (ker_buf_desc & 0xFFFFFFFFFC000000ULL) >> 20;
1366
1367	// move one container
1368	if ( is_rx ) // RX transfer
1369	{
1370	// inval kernel buffer in L2 before read in L2
1371	_mmc_inval( ker_buf_paddr, NIC_CONTAINER_SIZE );
1372
1373	// transfer data from kernel buffer to user buffer
1374	_physical_memcpy( usr_buf_paddr,
1375	ker_buf_paddr,
1376	NIC_CONTAINER_SIZE );
1377	#if GIET_DEBUG_NIC
1378	_printf("\n[GIET DEBUG NIC] Task %d in _sys_nic_move() transfer kernel buffer %l\n"
1379	" to user buffer %l at cycle %d\n",
1380	thread , ker_buf_paddr , usr_buf_paddr , _get_proctime() );
1381	#endif
1382
1383	}
1384	else // TX transfer
1385	{
1386	// transfer data from user buffer to kernel buffer
1387	_physical_memcpy( ker_buf_paddr,
1388	usr_buf_paddr,
1389	NIC_CONTAINER_SIZE );
1390
1391	// sync kernel buffer in L2 after write in L2
1392	_mmc_sync( ker_buf_paddr, NIC_CONTAINER_SIZE );
1393
1394	#if GIET_DEBUG_NIC
1395	_printf("\n[GIET DEBUG NIC] Task %d in _sys_nic_move() transfer "
1396	"user buffer %l to kernel buffer %l at cycle %d\n",
1397	thread , usr_buf_paddr , ker_buf_paddr , _get_proctime() );
1398	#endif
1399
1400	}
1401
1402	// update kernel chbuf status
1403	if ( is_rx ) _physical_write ( ker_sts_paddr, 0 );
1404	else _physical_write ( ker_sts_paddr, 0x1 );
1405
1406	// sync kernel chbuf in L2 after write in L2
1407	_mmc_sync( ker_sts_paddr, 4 );
1408
1409	#if GIET_DEBUG_NIC
1410	_printf("\n[GIET DEBUG NIC] Task %d get buffer %d and exit _sys_nic_move() at cycle %d\n",
1411	thread , index , _get_proctime() );
1412	#endif
1413
1414	return 0;
1415	} // end _sys_nic_move()
1416
1417
1418	////////////////////////////////////////
1419	int _sys_nic_stop( unsigned int is_rx,
1420	unsigned int channel )
1421	{
1422	unsigned int nic_channel;
1423	unsigned int cma_channel;
1424
1425	// get NIC channel index and CMA channel index
1426	if ( is_rx )
1427	{
1428	nic_channel = _get_context_slot( CTX_NIC_RX_ID );
1429	cma_channel = _get_context_slot( CTX_CMA_RX_ID );
1430	}
1431	else
1432	{
1433	nic_channel = _get_context_slot( CTX_NIC_TX_ID );
1434	cma_channel = _get_context_slot( CTX_CMA_TX_ID );
1435	}
1436
1437	// check NIC and CMA channels index
1438	if ( nic_channel != channel )
1439	{
1440	_printf("\n[GIET_ERROR] in _sys_nic_stop(): illegal NIC channel\n");
1441	return -1;
1442	}
1443	if ( cma_channel >= NB_CMA_CHANNELS )
1444	{
1445	_printf("\n[GIET_ERROR] in _sys_nic_stop(): illegal CMA channel\n");
1446	return -1;
1447	}
1448
1449	// desactivates the NIC channel
1450	_nic_channel_stop( nic_channel, is_rx );
1451
1452	// desactivates the CMA channel
1453	_cma_set_register( cma_channel, CHBUF_RUN , 0 );
1454
1455	return 0;
1456	} // end _sys_nic_stop()
1457
1458	////////////////////////////////////////
1459	int _sys_nic_clear( unsigned int is_rx,
1460	unsigned int channel )
1461	{
1462	unsigned int nic_channel;
1463
1464	// get NIC channel
1465	if ( is_rx ) nic_channel = _get_context_slot( CTX_NIC_RX_ID );
1466	else nic_channel = _get_context_slot( CTX_NIC_TX_ID );
1467
1468	if ( nic_channel != channel )
1469	{
1470	_printf("\n[GIET_ERROR] in _sys_nic_clear(): illegal NIC channel\n");
1471	return -1;
1472	}
1473
1474	if ( is_rx )
1475	{
1476	_nic_set_global_register( NIC_G_NPKT_RX_G2S_RECEIVED , 0 );
1477	_nic_set_global_register( NIC_G_NPKT_RX_DES_TOO_SMALL , 0 );
1478	_nic_set_global_register( NIC_G_NPKT_RX_DES_TOO_BIG , 0 );
1479	_nic_set_global_register( NIC_G_NPKT_RX_DES_MFIFO_FULL , 0 );
1480	_nic_set_global_register( NIC_G_NPKT_RX_DES_CRC_FAIL , 0 );
1481	_nic_set_global_register( NIC_G_NPKT_RX_DISPATCH_RECEIVED , 0 );
1482	_nic_set_global_register( NIC_G_NPKT_RX_DISPATCH_BROADCAST , 0 );
1483	_nic_set_global_register( NIC_G_NPKT_RX_DISPATCH_DST_FAIL , 0 );
1484	_nic_set_global_register( NIC_G_NPKT_RX_DISPATCH_CH_FULL , 0 );
1485	}
1486	else
1487	{
1488	_nic_set_global_register( NIC_G_NPKT_TX_DISPATCH_RECEIVED , 0 );
1489	_nic_set_global_register( NIC_G_NPKT_TX_DISPATCH_TRANSMIT , 0 );
1490	_nic_set_global_register( NIC_G_NPKT_TX_DISPATCH_TOO_BIG , 0 );
1491	_nic_set_global_register( NIC_G_NPKT_TX_DISPATCH_TOO_SMALL , 0 );
1492	_nic_set_global_register( NIC_G_NPKT_TX_DISPATCH_SRC_FAIL , 0 );
1493	_nic_set_global_register( NIC_G_NPKT_TX_DISPATCH_BYPASS , 0 );
1494	_nic_set_global_register( NIC_G_NPKT_TX_DISPATCH_BROADCAST , 0 );
1495	}
1496	return 0;
1497	} // en _sys_nic_clear()
1498
1499	////////////////////////////////////////
1500	int _sys_nic_stats( unsigned int is_rx,
1501	unsigned int channel )
1502	{
1503	unsigned int nic_channel;
1504
1505	// get NIC channel
1506	if ( is_rx ) nic_channel = _get_context_slot( CTX_NIC_RX_ID );
1507	else nic_channel = _get_context_slot( CTX_NIC_TX_ID );
1508
1509	if ( nic_channel != channel )
1510	{
1511	_printf("\n[GIET_ERROR] in _sys_nic_stats(): illegal NIC channel\n");
1512	return -1;
1513	}
1514
1515	if ( is_rx )
1516	{
1517	unsigned int received = _nic_get_global_register( NIC_G_NPKT_RX_G2S_RECEIVED );
1518	unsigned int too_small = _nic_get_global_register( NIC_G_NPKT_RX_DES_TOO_SMALL );
1519	unsigned int too_big = _nic_get_global_register( NIC_G_NPKT_RX_DES_TOO_BIG );
1520	unsigned int fifo_full = _nic_get_global_register( NIC_G_NPKT_RX_DES_MFIFO_FULL );
1521	unsigned int crc_fail = _nic_get_global_register( NIC_G_NPKT_RX_DES_CRC_FAIL );
1522	unsigned int broadcast = _nic_get_global_register( NIC_G_NPKT_RX_DISPATCH_BROADCAST );
1523	unsigned int dst_fail = _nic_get_global_register( NIC_G_NPKT_RX_DISPATCH_DST_FAIL );
1524	unsigned int ch_full = _nic_get_global_register( NIC_G_NPKT_RX_DISPATCH_CH_FULL );
1525
1526	_printf("\n### Network Controller RX Statistics ###\n"
1527	"- packets received : %d\n"
1528	"- too small : %d\n"
1529	"- too big : %d\n"
1530	"- fifo full : %d\n"
1531	"- crc fail : %d\n"
1532	"- dst mac fail : %d\n"
1533	"- channel full : %d\n"
1534	"- broadcast : %d\n",
1535	received,
1536	too_small,
1537	too_big,
1538	fifo_full,
1539	crc_fail,
1540	dst_fail,
1541	ch_full,
1542	broadcast );
1543	}
1544	else
1545	{
1546	unsigned int received = _nic_get_global_register( NIC_G_NPKT_TX_DISPATCH_RECEIVED );
1547	unsigned int too_big = _nic_get_global_register( NIC_G_NPKT_TX_DISPATCH_TOO_BIG );
1548	unsigned int too_small = _nic_get_global_register( NIC_G_NPKT_TX_DISPATCH_TOO_SMALL );
1549	unsigned int src_fail = _nic_get_global_register( NIC_G_NPKT_TX_DISPATCH_SRC_FAIL );
1550	unsigned int bypass = _nic_get_global_register( NIC_G_NPKT_TX_DISPATCH_BYPASS );
1551	unsigned int broadcast = _nic_get_global_register( NIC_G_NPKT_TX_DISPATCH_BROADCAST );
1552
1553	_printf("\n### Network Controller TX Statistics ###\n"
1554	"- packets received : %d\n"
1555	"- too small : %d\n"
1556	"- too big : %d\n"
1557	"- src mac fail : %d\n"
1558	"- bypass : %d\n"
1559	"- broadcast : %d\n",
1560	received,
1561	too_big,
1562	too_small,
1563	src_fail,
1564	bypass,
1565	broadcast );
1566	}
1567	return 0;
1568	} // end _sys_nic_stats()
1569
1570	/////////////////////////////////////////////////////////////////////////////////////////
1571	// FBF related syscall handlers
1572	/////////////////////////////////////////////////////////////////////////////////////////
1573
1574	/////////////////////////////////////////////
1575	int _sys_fbf_sync_write( unsigned int offset,
1576	void* buffer,
1577	unsigned int length )
1578	{
1579	char* fbf_address = (char *)SEG_FBF_BASE + offset;
1580	memcpy( fbf_address, buffer, length);
1581
1582	return 0;
1583	}
1584
1585	/////////////////////////////////////////////
1586	int _sys_fbf_sync_read( unsigned int offset,
1587	void* buffer,
1588	unsigned int length )
1589	{
1590	char* fbf_address = (char *)SEG_FBF_BASE + offset;
1591	memcpy( buffer, fbf_address, length);
1592
1593	return 0;
1594	}
1595
1596	////////////////////////
1597	int _sys_fbf_cma_alloc()
1598	{
1599	// get a new CMA channel index
1600	unsigned int channel = _atomic_increment( &_cma_channel_allocator, 1 );
1601
1602	if ( channel >= NB_CMA_CHANNELS )
1603	{
1604	_printf("\n[GIET ERROR] in _sys_fbf_cma_alloc() : not enough CMA channels\n");
1605	return -1;
1606	}
1607	else
1608	{
1609	_set_context_slot( CTX_CMA_FB_ID, channel );
1610	return 0;
1611	}
1612	} // end sys_fbf_cma_alloc()
1613
1614
1615	///////////////////////////////////////////////////
1616	int _sys_fbf_cma_init_buf( void* buf0_vbase,
1617	void* buf1_vbase,
1618	void* sts0_vaddr,
1619	void* sts1_vaddr )
1620	{
1621	#if NB_CMA_CHANNELS > 0
1622
1623	unsigned int vaddr; // virtual address
1624	unsigned int flags; // for _v2p_translate()
1625	unsigned long long fbf_paddr; // fbf physical address
1626	unsigned long long fbf_sts_paddr; // fbf status physical address
1627	unsigned long long buf0_pbase; // buffer 0 base physical address
1628	unsigned long long sts0_paddr; // buffer 0 status physical address
1629	unsigned long long buf1_pbase; // buffer 1 base physical address
1630	unsigned long long sts1_paddr; // buffer 1 status physical address
1631
1632	// get channel index
1633	unsigned int channel = _get_context_slot( CTX_CMA_FB_ID );
1634
1635	if ( channel >= NB_CMA_CHANNELS )
1636	{
1637	_printf("\n[GIET ERROR] in _sys_fbf_cma_init_buf() : CMA channel index too large\n");
1638	return -1;
1639	}
1640
1641	#if GIET_DEBUG_FBF_CMA
1642	_printf("\n[FBF_CMA DEBUG] enters _sys_fbf_cma_init_buf()\n"
1643	" - channel = %d\n"
1644	" - buf0 vbase = %x\n"
1645	" - buf1 vbase = %x\n"
1646	" - sts0 vaddr = %x\n"
1647	" - sts1 vaddr = %x\n",
1648	channel,
1649	(unsigned int)buf0_vbase,
1650	(unsigned int)buf1_vbase,
1651	(unsigned int)sts0_vaddr,
1652	(unsigned int)sts1_vaddr );
1653	#endif
1654
1655	// checking user buffers virtual addresses alignment
1656	if ( ((unsigned int)buf0_vbase & 0x3F) \|\|
1657	((unsigned int)buf1_vbase & 0x3F) )
1658	{
1659	_printf("\n[GIET ERROR] in _sys_fbf_cma_init_buf() : user buffer not aligned\n");
1660	return -1;
1661	}
1662
1663	// checking user buffers status virtual addresses alignment
1664	if ( ((unsigned int)sts0_vaddr & 0x3F) \|\|
1665	((unsigned int)sts1_vaddr & 0x3F) )
1666	{
1667	_printf("\n[GIET ERROR] in _sys_fbf_cma_init_buf() : user status not aligned\n");
1668	return -1;
1669	}
1670
1671	// compute frame buffer physical address and initialize _fbf_chbuf[channel]
1672	vaddr = (unsigned int)SEG_FBF_BASE;
1673	fbf_paddr = _v2p_translate( vaddr , &flags );
1674	vaddr = (unsigned int)&_fbf_status[channel];
1675	fbf_sts_paddr = _v2p_translate( vaddr , &flags );
1676
1677	_fbf_chbuf[channel].fbf_desc =
1678	(unsigned long long) ((fbf_sts_paddr & 0xFFFFFFFFULL) >> 6) +
1679	(((fbf_paddr & 0xFFFFFFFFULL) >> 6 ) << 26);
1680
1681	// Compute user buffer 0 physical addresses and intialize _fbf_chbuf[channel]
1682	vaddr = (unsigned int)buf0_vbase;
1683	buf0_pbase = _v2p_translate( vaddr , &flags );
1684	if ((flags & PTE_U) == 0)
1685	{
1686	_printf("\n[GIET ERROR] in _sys_fbf_cma_init_buf() : buf0 not in user space\n");
1687	return -1;
1688	}
1689
1690	vaddr = (unsigned int)sts0_vaddr;
1691	sts0_paddr = _v2p_translate( vaddr , &flags );
1692	if ((flags & PTE_U) == 0)
1693	{
1694	_printf("\n[GIET ERROR] in _sys_fbf_cma_init_buf() : sts0 not in user space\n");
1695	return -1;
1696	}
1697
1698	_fbf_chbuf[channel].buf0_desc =
1699	(unsigned long long) ((sts0_paddr & 0xFFFFFFFFULL) >> 6) +
1700	(((buf0_pbase & 0xFFFFFFFFULL) >> 6 ) << 26);
1701
1702	// Compute user buffer 1 physical addresses and intialize _fbf_chbuf[channel]
1703	vaddr = (unsigned int)buf1_vbase;
1704	buf1_pbase = _v2p_translate( vaddr , &flags );
1705	if ((flags & PTE_U) == 0)
1706	{
1707	_printf("\n[GIET ERROR] in _sys_fbf_cma_init_buf() : buf1 not in user space\n");
1708	return -1;
1709	}
1710
1711	vaddr = (unsigned int)sts1_vaddr;
1712	sts1_paddr = _v2p_translate( vaddr , &flags );
1713	if ((flags & PTE_U) == 0)
1714	{
1715	_printf("\n[GIET ERROR] in _sys_fbf_cma_init_buf() : sts1 not in user space\n");
1716	return -1;
1717	}
1718
1719	_fbf_chbuf[channel].buf1_desc =
1720	(unsigned long long) ((sts1_paddr & 0xFFFFFFFFULL) >> 6) +
1721	(((buf1_pbase & 0xFFFFFFFFULL) >> 6 ) << 26);
1722
1723	// Compute and register physical adress of the fbf_chbuf descriptor
1724	vaddr = (unsigned int)&_fbf_chbuf[channel];
1725	_fbf_chbuf_paddr[channel] = _v2p_translate( vaddr , &flags );
1726
1727	#if GIET_DEBUG_FBF_CMA
1728	_printf(" - fbf pbase = %l\n"
1729	" - fbf status paddr = %l\n"
1730	" - buf0 pbase = %l\n"
1731	" - buf0 status paddr = %l\n"
1732	" - buf1 pbase = %l\n"
1733	" - buf0 status paddr = %l\n"
1734	" - chbuf pbase = %l\n",
1735	fbf_paddr,
1736	fbf_sts_paddr,
1737	buf0_pbase,
1738	sts0_paddr,
1739	buf1_pbase,
1740	sts1_paddr,
1741	_fbf_chbuf_paddr[channel] );
1742	#endif
1743
1744	return 0;
1745
1746	#else
1747
1748	_printf("\n[GIET ERROR] in _sys_fbf_cma_init_buf() : NB_CMA_CHANNELS = 0\n");
1749	return -1;
1750
1751	#endif
1752	} // end sys_fbf_cma_init_buf()
1753
1754	////////////////////////////////////////////
1755	int _sys_fbf_cma_start( unsigned int length )
1756	{
1757	#if NB_CMA_CHANNELS > 0
1758
1759	// get channel index
1760	unsigned int channel = _get_context_slot( CTX_CMA_FB_ID );
1761
1762	if ( channel >= NB_CMA_CHANNELS )
1763	{
1764	_printf("\n[GIET ERROR] in _fbf_cma_start() : CMA channel index too large\n");
1765	return -1;
1766	}
1767
1768	// check buffers initialization
1769	if ( ( _fbf_chbuf[channel].buf0_desc == 0x0ULL ) &&
1770	( _fbf_chbuf[channel].buf1_desc == 0x0ULL) &&
1771	( _fbf_chbuf[channel].fbf_desc == 0x0ULL) )
1772	{
1773	_printf("\n[GIET ERROR] in _sys_fbf_cma_start() :\n"
1774	"Buffer initialization has not been done\n");
1775	return -1;
1776	}
1777
1778	// initializes buffer length
1779	_fbf_chbuf[channel].length = length;
1780
1781	if ( USE_IOB )
1782	{
1783	// SYNC request for fbf_chbuf descriptor
1784	_mmc_sync( _fbf_chbuf_paddr[channel] , sizeof( fbf_chbuf_t ) );
1785	}
1786
1787	// start CMA transfer
1788	unsigned long long paddr = _fbf_chbuf_paddr[channel];
1789	unsigned int src_chbuf_paddr_lsb = (unsigned int)(paddr & 0xFFFFFFFF);
1790	unsigned int src_chbuf_paddr_ext = (unsigned int)(paddr >> 32);
1791	unsigned int dst_chbuf_paddr_lsb = src_chbuf_paddr_lsb + 16;
1792	unsigned int dst_chbuf_paddr_ext = src_chbuf_paddr_ext;
1793
1794	_cma_set_register( channel, CHBUF_SRC_DESC , src_chbuf_paddr_lsb );
1795	_cma_set_register( channel, CHBUF_SRC_EXT , src_chbuf_paddr_ext );
1796	_cma_set_register( channel, CHBUF_SRC_NBUFS, 2 );
1797	_cma_set_register( channel, CHBUF_DST_DESC , dst_chbuf_paddr_lsb );
1798	_cma_set_register( channel, CHBUF_DST_EXT , dst_chbuf_paddr_ext );
1799	_cma_set_register( channel, CHBUF_DST_NBUFS, 1 );
1800	_cma_set_register( channel, CHBUF_BUF_SIZE , length );
1801	_cma_set_register( channel, CHBUF_PERIOD , 300 );
1802	_cma_set_register( channel, CHBUF_RUN , 1 );
1803
1804	return 0;
1805
1806	#else
1807
1808	_printf("\n[GIET ERROR] in _sys_fbf_cma_start() : NB_CMA_CHANNELS = 0\n");
1809	return -1;
1810
1811	#endif
1812	} // end _sys_fbf_cma_start()
1813
1814	/////////////////////////////////////////////////////
1815	int _sys_fbf_cma_display( unsigned int buffer_index )
1816	{
1817	#if NB_CMA_CHANNELS > 0
1818
1819	volatile unsigned int full = 1;
1820
1821	// get channel index
1822	unsigned int channel = _get_context_slot( CTX_CMA_FB_ID );
1823
1824	if ( channel >= NB_CMA_CHANNELS )
1825	{
1826	_printf("\n[GIET ERROR] in _sys_fbf_cma_display() : "
1827	"CMA channel index too large\n");
1828	return -1;
1829	}
1830
1831	// get fbf_chbuf descriptor pointer
1832	fbf_chbuf_t* pdesc = &_fbf_chbuf[channel];
1833
1834	#if GIET_DEBUG_FBF_CMA
1835	_printf("\n[FBF_CMA DEBUG] enters _sys_fb_cma_display()\n"
1836	" - cma channel = %d\n"
1837	" - buffer index = %d\n"
1838	" - buf0_desc value = %l\n"
1839	" - buf1_desc value = %l\n"
1840	" - fbf_desc value = %l\n",
1841	channel , buffer_index,
1842	_fbf_chbuf[channel].buf0_desc,
1843	_fbf_chbuf[channel].buf1_desc,
1844	_fbf_chbuf[channel].fbf_desc );
1845	#endif
1846
1847	unsigned long long buf_sts_paddr;
1848	unsigned long long buf_paddr;
1849	unsigned long long fbf_sts_paddr;
1850
1851	if ( buffer_index == 0 ) // user buffer 0
1852	{
1853	buf_sts_paddr =
1854	((pdesc->buf0_desc & 0xFFF0000000000000ULL) >> 20) + // compute address extension
1855	((pdesc->buf0_desc & 0x3FFFFFFULL) << 6); // compute 32 LSB of the address
1856
1857	buf_paddr =
1858	(pdesc->buf0_desc & 0xFFFFFFFFFC000000ULL) >> 20; // compute the entire address
1859	}
1860	else // user buffer 1
1861	{
1862	buf_sts_paddr =
1863	((pdesc->buf1_desc & 0xFFF0000000000000ULL) >> 20) +
1864	((pdesc->buf1_desc & 0x3FFFFFFULL) << 6);
1865
1866	buf_paddr =
1867	(pdesc->buf1_desc & 0xFFFFFFFFFC000000ULL) >> 20;
1868	}
1869
1870	fbf_sts_paddr =
1871	((pdesc->fbf_desc & 0xFFF0000000000000ULL) >> 20) +
1872	((pdesc->fbf_desc & 0x3FFFFFFULL) << 6);
1873
1874	#if GIET_DEBUG_FBF_CMA
1875	_printf(" - fbf status paddr = %l\n"
1876	" - buf pbase = %l\n"
1877	" - buf status paddr = %l\n",
1878	fbf_sts_paddr,
1879	buf_paddr,
1880	buf_sts_paddr );
1881	#endif
1882
1883	// waiting user buffer released by the CMA component)
1884	while ( full )
1885	{
1886	// INVAL L2 cache copy of user buffer status
1887	// because it has been modified in RAM by the CMA component
1888	_mmc_inval( buf_sts_paddr , 4 );
1889
1890	full = _physical_read( buf_sts_paddr );
1891	}
1892
1893	// SYNC request for the user buffer, because
1894	// it will be read from XRAM by the CMA component
1895	_mmc_sync( buf_paddr , pdesc->length );
1896
1897	// set user buffer status
1898	_physical_write( buf_sts_paddr, 0x1 );
1899
1900	// reset fbf buffer status
1901	_physical_write( fbf_sts_paddr, 0x0 );
1902
1903	// SYNC request, because these buffer descriptors
1904	// will be read from XRAM by the CMA component
1905	_mmc_sync( buf_sts_paddr, 4 );
1906	_mmc_sync( fbf_sts_paddr, 4 );
1907
1908	return 0;
1909
1910	#else
1911
1912	_printf("\n[GIET ERROR] in _sys_fbf_cma_display() : no CMA channel allocated\n");
1913	return -1;
1914
1915	#endif
1916	} // end _sys_fbf_cma_display()
1917
1918	///////////////////////
1919	int _sys_fbf_cma_stop()
1920	{
1921	#if NB_CMA_CHANNELS > 0
1922
1923	// get channel index
1924	unsigned int channel = _get_context_slot( CTX_CMA_FB_ID );
1925
1926	if ( channel >= NB_CMA_CHANNELS )
1927	{
1928	_printf("\n[GIET ERROR] in _sys_fbf_cma_stop() : CMA channel index too large\n");
1929	return -1;
1930	}
1931
1932	// Desactivate CMA channel
1933	_cma_set_register( channel, CHBUF_RUN, 0 );
1934
1935	return 0;
1936
1937	#else
1938
1939	_printf("\n[GIET ERROR] in _sys_fbf_cma_stop() : no CMA channel allocated\n");
1940	return -1;
1941
1942	#endif
1943	} // end _sys_fbf_cma_stop()
1944
1945
1946	//////////////////////////////////////////////////////////////////////////////
1947	// Miscelaneous syscall handlers
1948	//////////////////////////////////////////////////////////////////////////////
1949
1950	///////////////
1951	int _sys_ukn()
1952	{
1953	_printf("\n[GIET ERROR] Undefined System Call / EPC = %x\n", _get_epc() );
1954	return -1;
1955	}
1956
1957	////////////////////////////////////
1958	int _sys_proc_xyp( unsigned int* x,
1959	unsigned int* y,
1960	unsigned int* p )
1961	{
1962	unsigned int gpid = _get_procid(); // global processor index from CPO register
1963
1964	*x = (gpid >> (Y_WIDTH + P_WIDTH)) & ((1<<X_WIDTH)-1);
1965	*y = (gpid >> P_WIDTH) & ((1<<Y_WIDTH)-1);
1966	*p = gpid & ((1<<P_WIDTH)-1);
1967
1968	return 0;
1969	}
1970
1971	//////////////////////////////////
1972	int _sys_task_exit( char* string )
1973	{
1974	unsigned int date = _get_proctime();
1975
1976	unsigned int gpid = _get_procid();
1977	unsigned int cluster_xy = gpid >> P_WIDTH;
1978	unsigned int y = cluster_xy & ((1<<Y_WIDTH)-1);
1979	unsigned int x = cluster_xy >> Y_WIDTH;
1980	unsigned int p = gpid & ((1<<P_WIDTH)-1);
1981
1982	unsigned int ltid = _get_context_slot(CTX_LTID_ID);
1983
1984	// print exit message
1985	_printf("\n[GIET] Exit task %d on processor[%d,%d,%d] at cycle %d"
1986	"\n Cause : %s\n\n",
1987	ltid, x, y, p, date, string );
1988
1989	// set NORUN_MASK_TASK bit (non runnable state)
1990	static_scheduler_t* psched = (static_scheduler_t*)_schedulers[x][y][p];
1991	unsigned int* ptr = &psched->context[ltid][CTX_NORUN_ID];
1992	_atomic_or( ptr , NORUN_MASK_TASK );
1993
1994	// deschedule
1995	_sys_context_switch();
1996
1997	return 0;
1998	}
1999
2000	/////////////////////////
2001	int _sys_context_switch()
2002	{
2003	unsigned int save_sr;
2004
2005	_it_disable( &save_sr );
2006	_ctx_switch();
2007	_it_restore( &save_sr );
2008
2009	return 0;
2010	}
2011
2012	////////////////////////
2013	int _sys_local_task_id()
2014	{
2015	return _get_context_slot(CTX_LTID_ID);
2016	}
2017
2018	/////////////////////////
2019	int _sys_global_task_id()
2020	{
2021	return _get_context_slot(CTX_GTID_ID);
2022	}
2023
2024	////////////////////
2025	int _sys_thread_id()
2026	{
2027	return _get_context_slot(CTX_TRDID_ID);
2028	}
2029
2030	////////////////////////////////////////////
2031	int _sys_procs_number( unsigned int* x_size,
2032	unsigned int* y_size,
2033	unsigned int* nprocs )
2034	{
2035	mapping_header_t * header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
2036	mapping_cluster_t * cluster = _get_cluster_base(header);
2037
2038	unsigned int x;
2039	unsigned int y;
2040	unsigned int okmin = 1;
2041	unsigned int okmax = 1;
2042
2043	// compute max values
2044	unsigned int xmax = header->x_size;
2045	unsigned int ymax = header->y_size;
2046	unsigned int procs = cluster[0].procs;
2047
2048	// check the (ymax-1) lower rows
2049	for ( y = 0 ; y < ymax-1 ; y++ )
2050	{
2051	for ( x = 0 ; x < xmax ; x++ )
2052	{
2053	if (cluster[x*ymax+y].procs != procs ) okmin = 0;
2054	}
2055	}
2056
2057	// check the upper row
2058	for ( x = 0 ; x < xmax ; x++ )
2059	{
2060	if (cluster[x*ymax+ymax-1].procs != procs ) okmax = 0;
2061	}
2062
2063	// return values
2064	if ( okmin && okmax )
2065	{
2066	*x_size = xmax;
2067	*y_size = ymax;
2068	*nprocs = procs;
2069	}
2070	else if ( okmin )
2071	{
2072	*x_size = xmax;
2073	*y_size = ymax-1;
2074	*nprocs = procs;
2075	}
2076	else
2077	{
2078	*x_size = 0;
2079	*y_size = 0;
2080	*nprocs = 0;
2081	}
2082	return 0;
2083	}
2084
2085	///////////////////////////////////////////////////////
2086	int _sys_vseg_get_vbase( char* vspace_name,
2087	char* vseg_name,
2088	unsigned int* vbase )
2089	{
2090	mapping_header_t * header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
2091	mapping_vspace_t * vspace = _get_vspace_base(header);
2092	mapping_vseg_t * vseg = _get_vseg_base(header);
2093
2094	unsigned int vspace_id;
2095	unsigned int vseg_id;
2096
2097	// scan vspaces
2098	for (vspace_id = 0; vspace_id < header->vspaces; vspace_id++)
2099	{
2100	if (_strncmp( vspace[vspace_id].name, vspace_name, 31) == 0)
2101	{
2102	// scan vsegs
2103	for (vseg_id = vspace[vspace_id].vseg_offset;
2104	vseg_id < (vspace[vspace_id].vseg_offset + vspace[vspace_id].vsegs);
2105	vseg_id++)
2106	{
2107	if (_strncmp(vseg[vseg_id].name, vseg_name, 31) == 0)
2108	{
2109	*vbase = vseg[vseg_id].vbase;
2110	return 0;
2111	}
2112	}
2113	}
2114	}
2115	return -1; // not found
2116	}
2117
2118	/////////////////////////////////////////////////////////
2119	int _sys_vseg_get_length( char* vspace_name,
2120	char* vseg_name,
2121	unsigned int* length )
2122	{
2123	mapping_header_t * header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
2124	mapping_vspace_t * vspace = _get_vspace_base(header);
2125	mapping_vseg_t * vseg = _get_vseg_base(header);
2126
2127	unsigned int vspace_id;
2128	unsigned int vseg_id;
2129
2130	// scan vspaces
2131	for (vspace_id = 0; vspace_id < header->vspaces; vspace_id++)
2132	{
2133	if (_strncmp( vspace[vspace_id].name, vspace_name, 31) == 0)
2134	{
2135	// scan vsegs
2136	for (vseg_id = vspace[vspace_id].vseg_offset;
2137	vseg_id < (vspace[vspace_id].vseg_offset + vspace[vspace_id].vsegs);
2138	vseg_id++)
2139	{
2140	if (_strncmp(vseg[vseg_id].name, vseg_name, 31) == 0)
2141	{
2142	*length = vseg[vseg_id].length;
2143	return 0;
2144	}
2145	}
2146	}
2147	}
2148	return -1; // not found
2149	}
2150
2151	////////////////////////////////////////
2152	int _sys_xy_from_ptr( void* ptr,
2153	unsigned int* x,
2154	unsigned int* y )
2155	{
2156	unsigned int flags;
2157	unsigned long long paddr = _v2p_translate( (unsigned int)ptr , &flags );
2158
2159	*x = (paddr>>36) & 0xF;
2160	*y = (paddr>>32) & 0xF;
2161
2162	return 0;
2163	}
2164
2165	/////////////////////////////////////////
2166	int _sys_heap_info( unsigned int* vaddr,
2167	unsigned int* length,
2168	unsigned int x,
2169	unsigned int y )
2170	{
2171	mapping_header_t * header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
2172	mapping_task_t * task = _get_task_base(header);
2173	mapping_vseg_t * vseg = _get_vseg_base(header);
2174	mapping_vspace_t * vspace = _get_vspace_base(header);
2175
2176	unsigned int task_id;
2177	unsigned int vspace_id;
2178	unsigned int vseg_id = 0xFFFFFFFF;
2179
2180	// searching the heap vseg
2181	if ( (x < X_SIZE) && (y < Y_SIZE) ) // searching a task in cluster(x,y)
2182	{
2183	// get vspace global index
2184	vspace_id = _get_context_slot(CTX_VSID_ID);
2185
2186	// scan all tasks in vspace
2187	unsigned int min = vspace[vspace_id].task_offset ;
2188	unsigned int max = min + vspace[vspace_id].tasks ;
2189	for ( task_id = min ; task_id < max ; task_id++ )
2190	{
2191	if ( task[task_id].clusterid == (x * Y_SIZE + y) )
2192	{
2193	vseg_id = task[task_id].heap_vseg_id;
2194	if ( vseg_id != 0xFFFFFFFF ) break;
2195	}
2196	}
2197	}
2198	else // searching in the calling task
2199	{
2200	task_id = _get_context_slot(CTX_GTID_ID);
2201	vseg_id = task[task_id].heap_vseg_id;
2202	}
2203
2204	// analysing the vseg_id
2205	if ( vseg_id != 0xFFFFFFFF )
2206	{
2207	*vaddr = vseg[vseg_id].vbase;
2208	*length = vseg[vseg_id].length;
2209	return 0;
2210	}
2211	else
2212	{
2213	*vaddr = 0;
2214	*length = 0;
2215	return -1;
2216	}
2217	} // end _sys_heap_info()
2218
2219
2220	///////////////////////
2221	int _sys_tasks_status()
2222	{
2223	mapping_header_t * header = (mapping_header_t *)SEG_BOOT_MAPPING_BASE;
2224	mapping_task_t * task = _get_task_base(header);
2225	mapping_vspace_t * vspace = _get_vspace_base(header);
2226	mapping_cluster_t * cluster = _get_cluster_base(header);
2227
2228	unsigned int task_id;
2229	unsigned int vspace_id;
2230
2231	// scan all vspaces
2232	for( vspace_id = 0 ; vspace_id < header->vspaces ; vspace_id++ )
2233	{
2234	_printf("\n*** vspace %s\n", vspace[vspace_id].name );
2235
2236	// scan all tasks in vspace
2237	unsigned int min = vspace[vspace_id].task_offset ;
2238	unsigned int max = min + vspace[vspace_id].tasks ;
2239	for ( task_id = min ; task_id < max ; task_id++ )
2240	{
2241	unsigned int clusterid = task[task_id].clusterid;
2242	unsigned int p = task[task_id].proclocid;
2243	unsigned int x = cluster[clusterid].x;
2244	unsigned int y = cluster[clusterid].y;
2245	unsigned int ltid = task[task_id].ltid;
2246	static_scheduler_t* psched = (static_scheduler_t*)_schedulers[x][y][p];
2247	unsigned int norun = psched->context[ltid][CTX_NORUN_ID];
2248	unsigned int current = psched->current;
2249
2250	if ( current == ltid )
2251	_printf(" - task %s on P[%d,%d,%d] : running\n", task[task_id].name, x, y, p );
2252	else if ( norun == 0 )
2253	_printf(" - task %s on P[%d,%d,%d] : runable\n", task[task_id].name, x, y, p );
2254	else
2255	_printf(" - task %s on P[%d,%d,%d] : blocked\n", task[task_id].name, x, y, p );
2256	}
2257	}
2258	return 0;
2259	} // end _sys_tasks_status()
2260
2261
2262
2263	// Local Variables:
2264	// tab-width: 4
2265	// c-basic-offset: 4
2266	// c-file-offsets:((innamespace . 0)(inline-open . 0))
2267	// indent-tabs-mode: nil
2268	// End:
2269	// vim: filetype=c:expandtab:shiftwidth=4:tabstop=4:softtabstop=4
2270

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

Download in other formats: