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source: soft/giet_vm/giet_kernel/sys_handler.c @ 667

Last change on this file since 667 was 661, checked in by guerin, 9 years ago
remove deprecated giet_fat_list()
Property svn:executable set to ``*
File size: 73.1 KB

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

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