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source: trunk/kernel/kern/rpc.c @ 211

Last change on this file since 211 was 188, checked in by alain, 7 years ago
Redefine the PIC device API.
File size: 55.6 KB

Rev	Line
[1]	1	/*
	2	* rpc.c - RPC related operations implementation.
	3	*
[23]	4	* Author Alain Greiner (2016,2017)
[1]	5	*
	6	* Copyright (c) UPMC Sorbonne Universites
	7	*
	8	* This file is part of ALMOS-MKH.
	9	*
	10	* ALMOS-MKH is free software; you can redistribute it and/or modify it
	11	* under the terms of the GNU General Public License as published by
	12	* the Free Software Foundation; version 2.0 of the License.
	13	*
	14	* ALMOS-MKH is distributed in the hope that it will be useful, but
	15	* WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	17	* General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with ALMOS-MKH; if not, write to the Free Software Foundation,
	21	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	22	*/
	23
[14]	24	#include <kernel_config.h>
[1]	25	#include <hal_types.h>
	26	#include <hal_atomic.h>
	27	#include <hal_remote.h>
	28	#include <hal_irqmask.h>
	29	#include <hal_special.h>
	30	#include <printk.h>
	31	#include <remote_sem.h>
	32	#include <core.h>
	33	#include <mapper.h>
[5]	34	#include <chdev.h>
[1]	35	#include <bits.h>
	36	#include <thread.h>
	37	#include <cluster.h>
	38	#include <process.h>
	39	#include <vfs.h>
	40	#include <fatfs.h>
[23]	41	#include <signal.h>
[1]	42	#include <dev_icu.h>
	43	#include <rpc.h>
	44
	45	/////////////////////////////////////////////////////////////////////////////////////////
	46	// array of function pointers (must be consistent with enum in rpc.h)
	47	/////////////////////////////////////////////////////////////////////////////////////////
	48
	49	rpc_server_t * rpc_server[RPC_MAX_INDEX] =
	50	{
	51	&rpc_pmem_get_pages_server, // 0
	52	&rpc_process_pid_alloc_server, // 1
	53	&rpc_process_exec_server, // 2
	54	&rpc_process_kill_server, // 3
	55	&rpc_thread_user_create_server, // 4
	56	&rpc_thread_kernel_create_server, // 5
[23]	57	&rpc_signal_rise_server, // 6
[5]	58	&rpc_undefined, // 7
[1]	59	&rpc_undefined, // 8
	60	&rpc_undefined, // 9
	61
	62	&rpc_vfs_inode_create_server, // 10
	63	&rpc_vfs_inode_destroy_server, // 11
	64	&rpc_vfs_dentry_create_server, // 12
	65	&rpc_vfs_dentry_destroy_server, // 13
[23]	66	&rpc_vfs_file_create_server, // 14
	67	&rpc_vfs_file_destroy_server, // 15
	68	&rpc_fatfs_get_cluster_server, // 16
[1]	69	&rpc_undefined, // 17
	70	&rpc_undefined, // 18
	71	&rpc_undefined, // 19
	72
	73	&rpc_vmm_get_ref_vseg_server, // 20
	74	&rpc_vmm_get_pte_server, // 21
[23]	75	&rpc_kcm_alloc_server, // 22
	76	&rpc_kcm_free_server, // 23
[1]	77	&rpc_mapper_move_server, // 24
	78	&rpc_undefined, // 25
	79	&rpc_undefined, // 26
	80	&rpc_undefined, // 27
	81	&rpc_undefined, // 28
	82	&rpc_undefined, // 29
	83	};
	84
	85	//////////////////////////////////////////////
	86	void __attribute__((noinline)) rpc_undefined()
	87	{
	88	printk("\n[PANIC] ‰s called in cluster %x\n", __FUNCTION__ , local_cxy );
	89	hal_core_sleep();
	90	}
	91
	92	/////////////////////////////////////////////////////////////////////////////////////////
[23]	93	// [0] Marshaling functions attached to RPC_PMEM_GET_PAGES
[1]	94	/////////////////////////////////////////////////////////////////////////////////////////
	95
	96	///////////////////////////////////////////////
	97	void rpc_pmem_get_pages_client( cxy_t cxy,
	98	uint32_t order, // in
	99	error_t * error, // out
	100	uint32_t * ppn ) // out
	101	{
	102	// any RPC must be remote
	103	if( cxy == local_cxy )
	104	{
	105	printk("PANIC in %s : target is not remote\n", __FUNCTION__ );
	106	hal_core_sleep();
	107	}
	108
	109	// initialise RPC descriptor header
	110	rpc_desc_t rpc;
	111	rpc.index = RPC_PMEM_GET_PAGES;
	112	rpc.response = 1;
	113
	114	// set input arguments in RPC descriptor
	115	rpc.args[0] = (uint64_t)order;
	116
	117	// register RPC request in remote RPC fifo (blocking function)
	118	rpc_send_sync( cxy , &rpc );
	119
	120	// get output arguments RPC descriptor
	121	*error = (error_t)rpc.args[0];
	122	*ppn = (uint32_t)rpc.args[1];
	123	}
	124
	125	///////////////////////////////////////////
	126	void rpc_pmem_get_pages_server( xptr_t xp )
	127	{
	128	uint32_t order; // input
	129	error_t error; // output
	130	uint32_t ppn; // output
	131
	132	// get client cluster identifier and pointer on RPC descriptor
	133	cxy_t cxy = (cxy_t)GET_CXY( xp );
	134	rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
	135
	136	// get input arguments from client RPC descriptor
	137	order = hal_remote_lw( XPTR( cxy , &desc->args[0] ) );
	138
	139	// call local pmem allocator
	140	page_t * page = ppm_alloc_pages( order );
	141	error = ( page == NULL ) ? ENOMEM : 0;
	142	ppn = ppm_page2ppn( page );
	143
	144	// set output arguments into client RPC descriptor
	145	hal_remote_sw( XPTR( cxy , &desc->args[0] ) , error );
	146	hal_remote_sw( XPTR( cxy , &desc->args[1] ) , ppn );
	147	}
	148
	149	/////////////////////////////////////////////////////////////////////////////////////////
[23]	150	// [1] Marshaling functions attached to RPC_PROCESS_PID_ALLOC
[1]	151	/////////////////////////////////////////////////////////////////////////////////////////
	152
	153	//////////////////////////////////////////////////
	154	void rpc_process_pid_alloc_client( cxy_t cxy,
	155	process_t * process, // in
	156	error_t * error, // out
	157	pid_t * pid ) // out
	158	{
	159	// RPC must be remote
	160	if( cxy == local_cxy )
	161	{
	162	printk("PANIC in %s : target is not remote\n", __FUNCTION__ );
	163	hal_core_sleep();
	164	}
	165
	166	// initialise RPC descriptor header
	167	rpc_desc_t rpc;
	168	rpc.index = RPC_PROCESS_PID_ALLOC;
	169	rpc.response = 1;
	170
	171	// set input arguments in RPC descriptor
	172	rpc.args[0] = (uint64_t)(intptr_t)process;
	173
	174	// register RPC request in remote RPC fifo (blocking function)
	175	rpc_send_sync( cxy , &rpc );
	176
	177	// get output arguments RPC descriptor
	178	*pid = (pid_t)rpc.args[1];
	179	*error = (error_t)rpc.args[2];
	180	}
	181
	182	//////////////////////////////////////////////
	183	void rpc_process_pid_alloc_server( xptr_t xp )
	184	{
	185	process_t * process; // input : client process descriptor
	186	error_t error; // output : error status
	187	pid_t pid; // output : process identifier
	188
	189	// get client cluster identifier and pointer on RPC descriptor
	190	cxy_t client_cxy = (cxy_t)GET_CXY( xp );
	191	rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
	192
	193	// get input argument from client RPC descriptor
	194	process = (process_t*)(intptr_t)hal_remote_lwd( XPTR( client_cxy , &desc->args[0] ) );
	195
	196	// call local pid allocator
	197	xptr_t xp_process = XPTR( client_cxy , process );
	198	error = cluster_pid_alloc( xp_process , &pid );
	199
	200	// set output arguments into client RPC descriptor
	201	hal_remote_sw( XPTR( client_cxy , &desc->args[0] ) , (uint64_t)error );
	202	hal_remote_sw( XPTR( client_cxy , &desc->args[1] ) , (uint64_t)pid );
	203	}
	204
	205
	206	/////////////////////////////////////////////////////////////////////////////////////////
[23]	207	// [2] Marshaling functions attached to RPC_PROCESS_EXEC
[1]	208	/////////////////////////////////////////////////////////////////////////////////////////
	209
	210	////////////////////////////////////////////////
	211	void rpc_process_exec_client( cxy_t cxy,
	212	exec_info_t * info, // in
	213	error_t * error ) // out
	214	{
	215	// RPC must be remote
	216	if( cxy == local_cxy )
	217	{
	218	printk("PANIC in %s : target is not remote\n", __FUNCTION__ );
	219	hal_core_sleep();
	220	}
	221
	222	// initialise RPC descriptor header
	223	rpc_desc_t rpc;
	224	rpc.index = RPC_PROCESS_EXEC;
	225	rpc.response = 1;
	226
	227	// set input arguments in RPC descriptor
	228	rpc.args[0] = (uint64_t)(intptr_t)info;
	229
	230	// register RPC request in remote RPC fifo (blocking function)
	231	rpc_send_sync( cxy , &rpc );
	232
	233	// get output arguments from RPC descriptor
	234	*error = (error_t)rpc.args[1];
	235	}
	236
	237	/////////////////////////////////////////
	238	void rpc_process_exec_server( xptr_t xp )
	239	{
	240	exec_info_t * ptr; // local pointer on remote exec_info structure
	241	exec_info_t info; // local copy of exec_info structure
	242	error_t error; // local error error status
	243
	244	// get client cluster identifier and pointer on RPC descriptor
	245	cxy_t client_cxy = (cxy_t)GET_CXY( xp );
	246	rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
	247
	248	// get pointer on exec_info structure in client cluster from RPC descriptor
	249	ptr = (exec_info_t*)(intptr_t)hal_remote_lwd( XPTR( client_cxy , &desc->args[0] ) );
	250
	251	// copy exec_info structure from client buffer to server buffer
	252	hal_remote_memcpy( XPTR( client_cxy , ptr ),
	253	XPTR( local_cxy , &info ),
	254	sizeof(exec_info_t) );
	255
	256	// call local kernel function
	257	error = process_make_exec( &info );
	258
	259	// set output argument into client RPC descriptor
	260	hal_remote_swd( XPTR( client_cxy , &desc->args[1] ) , (uint64_t)error );
	261	}
	262
	263
	264	/////////////////////////////////////////////////////////////////////////////////////////
[23]	265	// [3] Marshaling functions attached to RPC_PROCESS_KILL
[1]	266	/////////////////////////////////////////////////////////////////////////////////////////
	267
	268	///////////////////////////////////////////////////
	269	void rpc_process_kill_client( process_t * process )
	270	{
	271	// only reference cluster can send this RPC
[23]	272	if( GET_CXY( process->ref_xp ) != local_cxy )
[1]	273	{
	274	printk("PANIC in %s : caller is not the reference process\n", __FUNCTION__ );
	275	hal_core_sleep();
	276	}
	277
	278	// get local process index in reference cluster
	279	lpid_t lpid = LPID_FROM_PID( process->pid );
	280
	281	// get local process manager pointer
	282	pmgr_t * pmgr = &LOCAL_CLUSTER->pmgr;
	283
	284	// get number of copies
	285	uint32_t copies = pmgr->copies_nr[lpid];
	286
	287	// initialise RPC descriptor
	288	rpc_desc_t rpc;
	289	rpc.index = RPC_PROCESS_KILL;
	290	rpc.response = copies;
	291	rpc.args[0] = (uint64_t)process->pid;
	292
	293	// loop on list of copies to send RPC
	294	xptr_t iter;
	295	XLIST_FOREACH( XPTR( local_cxy , &pmgr->copies_root[lpid] ) , iter )
	296	{
	297	// get cluster_identifier for current copy
	298	cxy_t target_cxy = GET_CXY( iter );
	299
	300	// register RPC request in remote RPC fifo ... but the reference
	301	if( target_cxy != local_cxy ) rpc_send_sync( target_cxy , &rpc );
	302	}
	303	}
	304
	305	/////////////////////////////////////////
	306	void rpc_process_kill_server( xptr_t xp )
	307	{
	308	pid_t pid;
	309	process_t * process;
	310
	311	// get client cluster identifier and pointer on RPC descriptor
	312	cxy_t client_cxy = (cxy_t)GET_CXY( xp );
	313	rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
	314
	315	// get pid argument from RPC descriptor
	316	pid = (pid_t)hal_remote_lwd( XPTR( client_cxy , &desc->args[0] ) );
	317
	318	// get process pointer to call local kernel function
	319	process = cluster_get_local_process_from_pid( pid );
	320
	321	if( process == NULL ) // process not found => do nothing
	322	{
	323	printk("\n[WARNING] in %s : process %x not found in cluster %x\n",
	324	__FUNCTION__ , pid , local_cxy );
	325	}
	326	else // destroy process
	327	{
	328	process_kill( process );
	329	}
	330	}
	331
	332
	333	/////////////////////////////////////////////////////////////////////////////////////////
[23]	334	// [4] Marshaling functions attached to RPC_THREAD_USER_CREATE
[1]	335	/////////////////////////////////////////////////////////////////////////////////////////
	336
	337	/////////////////////////////////////////////////////////
	338	void rpc_thread_user_create_client( cxy_t cxy,
[23]	339	pid_t pid, // in
	340	void * start_func, // in
	341	void * start_arg, // in
[1]	342	pthread_attr_t * attr, // in
	343	xptr_t * thread_xp, // out
	344	error_t * error ) // out
	345	{
	346	// RPC must be remote
	347	if( cxy == local_cxy )
	348	{
	349	printk("\n[PANIC] in %s : target is not remote\n", __FUNCTION__ );
	350	hal_core_sleep();
	351	}
	352
	353	// initialise RPC descriptor header
	354	rpc_desc_t rpc;
	355	rpc.index = RPC_THREAD_USER_CREATE;
	356	rpc.response = 1;
	357
	358	// set input arguments in RPC descriptor
[23]	359	rpc.args[0] = (uint64_t)pid;
	360	rpc.args[1] = (uint64_t)(intptr_t)start_func;
	361	rpc.args[2] = (uint64_t)(intptr_t)start_arg;
	362	rpc.args[3] = (uint64_t)(intptr_t)attr;
[1]	363
	364	// register RPC request in remote RPC fifo
	365	rpc_send_sync( cxy , &rpc );
	366
	367	// get output arguments from RPC descriptor
[23]	368	*thread_xp = (xptr_t)rpc.args[4];
	369	*error = (error_t)rpc.args[5];
[1]	370	}
	371
	372	///////////////////////////////////////////////
	373	void rpc_thread_user_create_server( xptr_t xp )
	374	{
	375	pthread_attr_t * attr_ptr; // pointer on attributes structure in client cluster
	376	pthread_attr_t attr_copy; // attributes structure copy in server cluster
	377	thread_t * thread_ptr; // local pointer on thread descriptor
	378	xptr_t thread_xp; // extended pointer on thread descriptor
[23]	379
[1]	380	pid_t pid; // process identifier
[23]	381	void * start_func;
	382	void * start_arg;
	383	error_t error;
[1]	384
	385	// get client cluster identifier and pointer on RPC descriptor
	386	cxy_t client_cxy = (cxy_t)GET_CXY( xp );
	387	rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
	388
	389	// get pointer on attributes structure in client cluster from RPC descriptor
	390
[23]	391	// get input arguments from RPC descriptor
	392	pid = (pid_t) hal_remote_lwd(XPTR(client_cxy , &desc->args[0]));
	393	start_func = (void *)(intptr_t) hal_remote_lwd(XPTR(client_cxy , &desc->args[1]));
	394	start_arg = (void *)(intptr_t) hal_remote_lwd(XPTR(client_cxy , &desc->args[2]));
	395	attr_ptr = (pthread_attr_t *)(intptr_t)hal_remote_lwd(XPTR(client_cxy , &desc->args[3]));
	396
[1]	397	// makes a local copy of attributes structure
	398	hal_remote_memcpy( XPTR( local_cxy , &attr_copy ),
	399	XPTR( client_cxy , attr_ptr ),
	400	sizeof(pthread_attr_t) );
	401
[23]	402	assert( (attr_copy.cxy == local_cxy) , __FUNCTION__ , "bad target cluster\n" );
[1]	403
[23]	404	// call kernel function
	405	error = thread_user_create( pid,
	406	start_func,
	407	start_arg,
	408	&attr_copy,
	409	&thread_ptr );
[1]	410
	411	// set output arguments
	412	thread_xp = XPTR( local_cxy , thread_ptr );
	413	hal_remote_swd( XPTR( client_cxy , &desc->args[1] ) , (uint64_t)error );
	414	hal_remote_swd( XPTR( client_cxy , &desc->args[2] ) , (uint64_t)thread_xp );
	415	}
	416
	417	/////////////////////////////////////////////////////////////////////////////////////////
[23]	418	// [5] Marshaling functions attached to RPC_THREAD_KERNEL_CREATE
[1]	419	/////////////////////////////////////////////////////////////////////////////////////////
	420
	421	////////////////////////////////////////////////////
	422	void rpc_thread_kernel_create_client( cxy_t cxy,
	423	uint32_t type, // in
	424	void * func, // in
	425	void * args, // in
	426	xptr_t * thread_xp, // out
	427	error_t * error ) // out
	428	{
	429	// RPC must be remote
	430	if( cxy == local_cxy )
	431	{
	432	printk("PANIC in %s : target is not remote\n", __FUNCTION__ );
	433	hal_core_sleep();
	434	}
	435
	436	// initialise RPC descriptor header
	437	rpc_desc_t rpc;
	438	rpc.index = RPC_THREAD_KERNEL_CREATE;
	439	rpc.response = 1;
	440
	441	// set input arguments in RPC descriptor
	442	rpc.args[0] = (uint64_t)type;
	443	rpc.args[1] = (uint64_t)(intptr_t)func;
	444	rpc.args[2] = (uint64_t)(intptr_t)args;
	445
	446	// register RPC request in remote RPC fifo
	447	rpc_send_sync( cxy , &rpc );
	448
	449	// get output arguments from RPC descriptor
	450	*thread_xp = (xptr_t)rpc.args[3];
	451	*error = (error_t)rpc.args[4];
	452	}
	453
	454	/////////////////////////////////////////////////
	455	void rpc_thread_kernel_create_server( xptr_t xp )
	456	{
	457	thread_t * thread_ptr; // local pointer on thread descriptor
	458	xptr_t thread_xp; // extended pointer on thread descriptor
	459	lid_t core_lid; // core local index
	460	error_t error;
	461
	462	// get client cluster identifier and pointer on RPC descriptor
	463	cxy_t client_cxy = (cxy_t)GET_CXY( xp );
	464	rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
	465
	466	// get attributes from RPC descriptor
	467	uint32_t type = (uint32_t) hal_remote_lwd( XPTR( client_cxy , &desc->args[0] ) );
	468	void * func = (void*)(intptr_t)hal_remote_lwd( XPTR( client_cxy , &desc->args[1] ) );
	469	void * args = (void*)(intptr_t)hal_remote_lwd( XPTR( client_cxy , &desc->args[2] ) );
	470
	471	// select one core
	472	core_lid = cluster_select_local_core();
	473
	474	// call local kernel function
	475	error = thread_kernel_create( &thread_ptr , type , func , args , core_lid );
	476
	477	// set output arguments
	478	thread_xp = XPTR( local_cxy , thread_ptr );
	479	hal_remote_swd( XPTR( client_cxy , &desc->args[1] ) , (uint64_t)error );
	480	hal_remote_swd( XPTR( client_cxy , &desc->args[2] ) , (uint64_t)thread_xp );
	481	}
	482
	483	/////////////////////////////////////////////////////////////////////////////////////////
[23]	484	// [6] Marshaling functions attached to RPC_SIGNAL_RISE
[1]	485	/////////////////////////////////////////////////////////////////////////////////////////
	486
[23]	487	/////////////////////////////////////////////
	488	void rpc_signal_rise_client( cxy_t cxy,
	489	process_t * process, // in
	490	uint32_t sig_id ) // in
	491	{
	492	// RPC must be remote
	493	if( cxy == local_cxy )
	494	{
	495	printk("PANIC in %s : target is not remote\n", __FUNCTION__ );
	496	hal_core_sleep();
	497	}
	498
	499	// initialise RPC descriptor header
	500	rpc_desc_t rpc;
	501	rpc.index = RPC_SIGNAL_RISE;
	502	rpc.response = 1;
	503
	504	// set input arguments in RPC descriptor
	505	rpc.args[0] = (uint64_t)(intptr_t)process;
	506	rpc.args[1] = (uint64_t)sig_id;
	507
	508	// register RPC request in remote RPC fifo
	509	rpc_send_sync( cxy , &rpc );
	510	}
	511
	512	////////////////////////////////////////
	513	void rpc_signal_rise_server( xptr_t xp )
	514	{
	515	process_t * process; // local pointer on process descriptor
	516	uint32_t sig_id; // signal index
	517
	518	// get client cluster identifier and pointer on RPC descriptor
	519	cxy_t client_cxy = (cxy_t)GET_CXY( xp );
	520	rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
	521
	522	// get attributes from RPC descriptor
	523	process = (process_t *)(intptr_t)hal_remote_lwd( XPTR( client_cxy , &desc->args[0] ) );
	524	sig_id = (uint32_t) hal_remote_lwd( XPTR( client_cxy , &desc->args[1] ) );
	525
	526	// call local kernel function
	527	signal_rise( process , sig_id );
	528	}
	529
	530	/////////////////////////////////////////////////////////////////////////////////////////
	531	// [10] Marshaling functions attached to RPC_VFS_INODE_CREATE
	532	/////////////////////////////////////////////////////////////////////////////////////////
	533
[1]	534	/////////////////////////////////////////////////////
	535	void rpc_vfs_inode_create_client( cxy_t cxy,
	536	xptr_t dentry_xp, // in
[23]	537	uint32_t fs_type, // in
	538	uint32_t inode_type, // in
[188]	539	void * extend, // in
[1]	540	uint32_t attr, // in
[23]	541	uint32_t rights, // in
[1]	542	uint32_t uid, // in
	543	uint32_t gid, // in
	544	xptr_t * inode_xp, // out
	545	error_t * error ) // out
	546	{
	547	// RPC must be remote
	548	if( cxy == local_cxy )
	549	{
	550	printk("PANIC in %s : target cluster is not remote\n", __FUNCTION__ );
	551	hal_core_sleep();
	552	}
	553
	554	// initialise RPC descriptor header
	555	rpc_desc_t rpc;
	556	rpc.index = RPC_VFS_INODE_CREATE;
	557	rpc.response = 1;
	558
	559	// set input arguments in RPC descriptor
	560	rpc.args[0] = (uint64_t)dentry_xp;
[23]	561	rpc.args[1] = (uint64_t)fs_type;
	562	rpc.args[2] = (uint64_t)inode_type;
[188]	563	rpc.args[3] = (uint64_t)(intptr_t)extend;
	564	rpc.args[4] = (uint64_t)attr;
	565	rpc.args[5] = (uint64_t)rights;
	566	rpc.args[6] = (uint64_t)uid;
	567	rpc.args[7] = (uint64_t)gid;
[1]	568
	569	// register RPC request in remote RPC fifo (blocking function)
	570	rpc_send_sync( cxy , &rpc );
	571
	572	// get output values from RPC descriptor
[188]	573	*inode_xp = (xptr_t)rpc.args[8];
	574	*error = (error_t)rpc.args[9];
[1]	575	}
	576
	577	/////////////////////////////////////////////
	578	void rpc_vfs_inode_create_server( xptr_t xp )
	579	{
	580	xptr_t dentry_xp;
[23]	581	uint32_t fs_type;
	582	uint32_t inode_type;
[188]	583	void * extend;
[1]	584	uint32_t attr;
[23]	585	uint32_t rights;
[1]	586	uint32_t uid;
	587	uint32_t gid;
	588	xptr_t inode_xp;
	589	error_t error;
	590
	591	// get client cluster identifier and pointer on RPC descriptor
	592	cxy_t client_cxy = (cxy_t)GET_CXY( xp );
	593	rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
	594
	595	// get input arguments from client rpc descriptor
[188]	596	dentry_xp = (xptr_t) hal_remote_lwd( XPTR( client_cxy , &desc->args[0] ) );
	597	fs_type = (uint32_t) hal_remote_lwd( XPTR( client_cxy , &desc->args[1] ) );
	598	inode_type = (uint32_t) hal_remote_lwd( XPTR( client_cxy , &desc->args[2] ) );
	599	extend = (void *)(intptr_t)hal_remote_lwd( XPTR( client_cxy , &desc->args[3] ) );
	600	attr = (uint32_t) hal_remote_lwd( XPTR( client_cxy , &desc->args[4] ) );
	601	rights = (uint32_t) hal_remote_lwd( XPTR( client_cxy , &desc->args[5] ) );
	602	uid = (uid_t) hal_remote_lwd( XPTR( client_cxy , &desc->args[6] ) );
	603	gid = (gid_t) hal_remote_lwd( XPTR( client_cxy , &desc->args[7] ) );
[1]	604
	605	// call local kernel function
	606	error = vfs_inode_create( dentry_xp,
[23]	607	fs_type,
	608	inode_type,
[188]	609	extend,
[1]	610	attr,
[23]	611	rights,
[1]	612	uid,
	613	gid,
	614	&inode_xp );
	615
	616	// set output arguments
[188]	617	hal_remote_swd( XPTR( client_cxy , &desc->args[8] ) , (uint64_t)inode_xp );
	618	hal_remote_swd( XPTR( client_cxy , &desc->args[9] ) , (uint64_t)error );
[1]	619	}
	620
	621	/////////////////////////////////////////////////////////////////////////////////////////
[23]	622	// [11] Marshaling functions attached to RPC_VFS_INODE_DESTROY
[1]	623	/////////////////////////////////////////////////////////////////////////////////////////
	624
	625	/////////////////////////////////////////////////////////////
	626	void rpc_vfs_inode_destroy_client( cxy_t cxy,
	627	struct vfs_inode_s * inode )
	628	{
	629	// RPC must be remote
	630	if( cxy == local_cxy )
	631	{
	632	printk("PANIC in %s : target cluster is not remote\n", __FUNCTION__ );
	633	hal_core_sleep();
	634	}
	635
	636	// initialise RPC descriptor header
	637	rpc_desc_t rpc;
	638	rpc.index = RPC_VFS_INODE_DESTROY;
	639	rpc.response = 1;
	640
	641	// set input arguments in RPC descriptor
	642	rpc.args[0] = (uint64_t)(intptr_t)inode;
	643
	644	// register RPC request in remote RPC fifo (blocking function)
	645	rpc_send_sync( cxy , &rpc );
	646	}
	647
	648	//////////////////////////////////////////////
	649	void rpc_vfs_inode_destroy_server( xptr_t xp )
	650	{
	651	vfs_inode_t * inode;
	652
	653	// get client cluster identifier and pointer on RPC descriptor
	654	cxy_t client_cxy = (cxy_t)GET_CXY( xp );
	655	rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
	656
	657	// get arguments "inode" from client RPC descriptor
	658	inode = (vfs_inode_t *)(intptr_t)hal_remote_lwd( XPTR( client_cxy , &desc->args[0] ) );
	659
	660	// call local kernel function
	661	vfs_inode_destroy( inode );
	662	}
	663
	664	/////////////////////////////////////////////////////////////////////////////////////////
[23]	665	// [12] Marshaling functions attached to RPC_VFS_DENTRY_CREATE
[1]	666	/////////////////////////////////////////////////////////////////////////////////////////
	667
	668	//////////////////////////////////////////////////////////////
	669	void rpc_vfs_dentry_create_client( cxy_t cxy,
	670	uint32_t type, // in
	671	char * name, // in
	672	struct vfs_inode_s * parent, // in
	673	xptr_t * dentry_xp, // out
	674	error_t * error ) // out
	675	{
	676	// RPC must be remote
	677	if( cxy == local_cxy )
	678	{
	679	printk("PANIC in %s : target cluster is not remote\n", __FUNCTION__ );
	680	hal_core_sleep();
	681	}
	682
	683	// initialise RPC descriptor header
	684	rpc_desc_t rpc;
	685	rpc.index = RPC_VFS_DENTRY_CREATE;
	686	rpc.response = 1;
	687
	688	// set input arguments in RPC descriptor
	689	rpc.args[0] = (uint64_t)type;
	690	rpc.args[1] = (uint64_t)(intptr_t)name;
	691	rpc.args[2] = (uint64_t)strlen( name );
	692	rpc.args[3] = (uint64_t)(intptr_t)parent;
	693
	694	// register RPC request in remote RPC fifo (blocking function)
	695	rpc_send_sync( cxy , &rpc );
	696
	697	// get output values from RPC descriptor
	698	*dentry_xp = (xptr_t)rpc.args[4];
	699	*error = (error_t)rpc.args[5];
	700	}
	701
	702	//////////////////////////////////////////////
	703	void rpc_vfs_dentry_create_server( xptr_t xp )
	704	{
	705	uint32_t type;
	706	char * name;
	707	vfs_inode_t * parent;
	708	xptr_t dentry_xp;
	709	char name_copy[CONFIG_VFS_MAX_NAME_LENGTH];
	710	uint32_t length;
	711	error_t error;
	712
	713	// get client cluster identifier and pointer on RPC descriptor
	714	cxy_t client_cxy = (cxy_t)GET_CXY( xp );
	715	rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
	716
	717	// get argument "name" & "length" from client RPC descriptor and makes a local copy
	718	name = (char *)(intptr_t)hal_remote_lwd( XPTR( client_cxy , &desc->args[1] ) );
	719	length = (uint32_t) hal_remote_lwd( XPTR( client_cxy , &desc->args[2] ) );
	720	hal_remote_memcpy( XPTR( local_cxy , name_copy ),
	721	XPTR( client_cxy , name ),
	722	length + 1 ); // +1 for the NUL char
	723
	724	// get arguments "type" and "parent" from client RPC descriptor
	725	type = (uint32_t) hal_remote_lwd( XPTR( client_cxy , &desc->args[0] ) );
	726	parent = (vfs_inode_t *)(intptr_t)hal_remote_lwd( XPTR( client_cxy , &desc->args[3] ) );
	727
	728	// call local kernel function
	729	error = vfs_dentry_create( type,
	730	name_copy,
	731	parent,
	732	&dentry_xp );
	733
	734	// set output arguments
	735	hal_remote_swd( XPTR( client_cxy , &desc->args[4] ) , (uint64_t)dentry_xp );
	736	hal_remote_swd( XPTR( client_cxy , &desc->args[5] ) , (uint64_t)error );
	737	}
	738
	739	/////////////////////////////////////////////////////////////////////////////////////////
[23]	740	// [13] Marshaling functions attached to RPC_VFS_DENTRY_DESTROY
[1]	741	/////////////////////////////////////////////////////////////////////////////////////////
	742
	743	///////////////////////////////////////////////////////
	744	void rpc_vfs_dentry_destroy_client( cxy_t cxy,
	745	vfs_dentry_t * dentry )
	746	{
	747	// RPC must be remote
	748	if( cxy == local_cxy )
	749	{
	750	printk("PANIC in %s : target cluster is not remote\n", __FUNCTION__ );
	751	hal_core_sleep();
	752	}
	753
	754	// initialise RPC descriptor header
	755	rpc_desc_t rpc;
	756	rpc.index = RPC_VFS_DENTRY_DESTROY;
	757	rpc.response = 1;
	758
	759	// set input arguments in RPC descriptor
	760	rpc.args[0] = (uint64_t)(intptr_t)dentry;
	761
	762	// register RPC request in remote RPC fifo (blocking function)
	763	rpc_send_sync( cxy , &rpc );
	764	}
	765
	766	///////////////////////////////////////////////
	767	void rpc_vfs_dentry_destroy_server( xptr_t xp )
	768	{
	769	vfs_dentry_t * dentry;
	770
	771	// get client cluster identifier and pointer on RPC descriptor
	772	cxy_t client_cxy = (cxy_t)GET_CXY( xp );
	773	rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
	774
	775	// get arguments "dentry" from client RPC descriptor
	776	dentry = (vfs_dentry_t *)(intptr_t)hal_remote_lwd( XPTR( client_cxy , &desc->args[0] ) );
	777
	778	// call local kernel function
	779	vfs_dentry_destroy( dentry );
	780	}
	781
	782
	783	/////////////////////////////////////////////////////////////////////////////////////////
[23]	784	// [14] Marshaling functions attached to RPC_VFS_FILE_CREATE
[1]	785	/////////////////////////////////////////////////////////////////////////////////////////
	786
[23]	787	//////////////////////////////////////////////////////////////
	788	void rpc_vfs_file_create_client( cxy_t cxy,
	789	struct vfs_inode_s * inode, // in
	790	uint32_t file_attr, // in
	791	xptr_t * file_xp, // out
	792	error_t * error ) // out
	793	{
	794	// RPC must be remote
	795	if( cxy == local_cxy )
	796	{
	797	printk("PANIC in %s : target cluster is not remote\n", __FUNCTION__ );
	798	hal_core_sleep();
	799	}
	800
	801	// initialise RPC descriptor header
	802	rpc_desc_t rpc;
	803	rpc.index = RPC_VFS_FILE_CREATE;
	804	rpc.response = 1;
	805
	806	// set input arguments in RPC descriptor
	807	rpc.args[0] = (uint64_t)(intptr_t)inode;
	808	rpc.args[1] = (uint64_t)file_attr;
	809
	810	// register RPC request in remote RPC fifo (blocking function)
	811	rpc_send_sync( cxy , &rpc );
	812
	813	// get output values from RPC descriptor
	814	*file_xp = (xptr_t)rpc.args[2];
	815	*error = (error_t)rpc.args[3];
	816	}
	817
	818	////////////////////////////////////////////
	819	void rpc_vfs_file_create_server( xptr_t xp )
	820	{
	821	uint32_t file_attr;
	822	vfs_inode_t * inode;
	823	xptr_t file_xp;
	824	error_t error;
	825
	826	// get client cluster identifier and pointer on RPC descriptor
	827	cxy_t client_cxy = (cxy_t)GET_CXY( xp );
	828	rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
	829
	830	// get arguments "file_attr" and "inode" from client RPC descriptor
	831	inode = (vfs_inode_t *)(intptr_t)hal_remote_lwd( XPTR( client_cxy , &desc->args[0] ) );
	832	file_attr = (uint32_t) hal_remote_lwd( XPTR( client_cxy , &desc->args[1] ) );
	833
	834	// call local kernel function
	835	error = vfs_file_create( inode,
	836	file_attr,
	837	&file_xp );
	838
	839	// set output arguments
	840	hal_remote_swd( XPTR( client_cxy , &desc->args[2] ) , (uint64_t)file_xp );
	841	hal_remote_swd( XPTR( client_cxy , &desc->args[3] ) , (uint64_t)error );
	842	}
	843
	844	/////////////////////////////////////////////////////////////////////////////////////////
	845	// [15] Marshaling functions attached to RPC_VFS_FILE_DESTROY
	846	/////////////////////////////////////////////////////////////////////////////////////////
	847
	848	///////////////////////////////////////////////////
	849	void rpc_vfs_file_destroy_client( cxy_t cxy,
	850	vfs_file_t * file )
	851	{
	852	// RPC must be remote
	853	if( cxy == local_cxy )
	854	{
	855	printk("PANIC in %s : target cluster is not remote\n", __FUNCTION__ );
	856	hal_core_sleep();
	857	}
	858
	859	// initialise RPC descriptor header
	860	rpc_desc_t rpc;
	861	rpc.index = RPC_VFS_FILE_DESTROY;
	862	rpc.response = 1;
	863
	864	// set input arguments in RPC descriptor
	865	rpc.args[0] = (uint64_t)(intptr_t)file;
	866
	867	// register RPC request in remote RPC fifo (blocking function)
	868	rpc_send_sync( cxy , &rpc );
	869	}
	870
	871	/////////////////////////////////////////////
	872	void rpc_vfs_file_destroy_server( xptr_t xp )
	873	{
	874	vfs_file_t * file;
	875
	876	// get client cluster identifier and pointer on RPC descriptor
	877	cxy_t client_cxy = (cxy_t)GET_CXY( xp );
	878	rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
	879
	880	// get arguments "dentry" from client RPC descriptor
	881	file = (vfs_file_t *)(intptr_t)hal_remote_lwd( XPTR( client_cxy , &desc->args[0] ) );
	882
	883	// call local kernel function
	884	vfs_file_destroy( file );
	885	}
	886
	887	/////////////////////////////////////////////////////////////////////////////////////////
	888	// [16] Marshaling functions attached to RPC_FATFS_GET_CLUSTER
	889	/////////////////////////////////////////////////////////////////////////////////////////
	890
[1]	891	//////////////////////////////////////////////////
[23]	892	void rpc_fatfs_get_cluster_client( cxy_t cxy,
	893	mapper_t * mapper, // in
	894	uint32_t first, // in
	895	uint32_t page, // in
	896	uint32_t * cluster, // out
	897	error_t * error ) // out
	898	{
	899	// RPC must be remote
	900	if( cxy == local_cxy )
	901	{
	902	printk("PANIC in %s : target is not remote\n", __FUNCTION__ );
	903	hal_core_sleep();
	904	}
	905
	906	// initialise RPC descriptor header
	907	rpc_desc_t rpc;
	908	rpc.index = RPC_FATFS_GET_CLUSTER;
	909	rpc.response = 1;
	910
	911	// set input arguments in RPC descriptor
	912	rpc.args[0] = (uint64_t)(intptr_t)mapper;
	913	rpc.args[1] = (uint64_t)first;
	914	rpc.args[2] = (uint64_t)page;
	915
	916	// register RPC request in remote RPC fifo
	917	rpc_send_sync( cxy , &rpc );
	918
	919	// get output argument from rpc descriptor
	920	*cluster = (uint32_t)rpc.args[3];
	921	*error = (error_t)rpc.args[4];
	922	}
	923
	924	//////////////////////////////////////////////
	925	void rpc_fatfs_get_cluster_server( xptr_t xp )
	926	{
	927	mapper_t * mapper;
	928	uint32_t first;
	929	uint32_t page;
	930	uint32_t cluster;
	931	error_t error;
	932
	933	// get client cluster identifier and pointer on RPC descriptor
	934	cxy_t client_cxy = (cxy_t)GET_CXY( xp );
	935	rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
	936
	937	// get input arguments
	938	mapper = (mapper_t *)(intptr_t)hal_remote_lpt( XPTR( client_cxy , &desc->args[0] ) );
	939	first = (uint32_t) hal_remote_lw ( XPTR( client_cxy , &desc->args[1] ) );
	940	page = (uint32_t) hal_remote_lw ( XPTR( client_cxy , &desc->args[2] ) );
	941
	942	// call the kernel function
	943	error = fatfs_get_cluster( mapper , first , page , &cluster );
	944
	945	// set output argument
	946	hal_remote_swd( XPTR( client_cxy , &desc->args[3] ) , (uint64_t)cluster );
	947	hal_remote_swd( XPTR( client_cxy , &desc->args[4] ) , (uint64_t)error );
	948	}
	949
	950	/////////////////////////////////////////////////////////////////////////////////////////
	951	// [20] Marshaling functions attached to RPC_VMM_GET_REF_VSEG
	952	/////////////////////////////////////////////////////////////////////////////////////////
	953
	954	//////////////////////////////////////////////////
[1]	955	void rpc_vmm_get_ref_vseg_client( cxy_t cxy,
	956	process_t * process, // in
	957	intptr_t vaddr, // in
	958	xptr_t * vseg_xp ) // out
	959	{
	960	// RPC must be remote
	961	if( cxy == local_cxy )
	962	{
	963	printk("PANIC in %s : target is not remote\n", __FUNCTION__ );
	964	hal_core_sleep();
	965	}
	966
	967	// initialise RPC descriptor header
	968	rpc_desc_t rpc;
	969	rpc.index = RPC_VMM_GET_REF_VSEG;
	970	rpc.response = 1;
	971
	972	// set input arguments in RPC descriptor
	973	rpc.args[0] = (uint64_t)(intptr_t)process;
	974	rpc.args[1] = (uint64_t)vaddr;
	975
	976	// register RPC request in remote RPC fifo (blocking function)
	977	rpc_send_sync( cxy , &rpc );
	978
	979	// get output argument from rpc descriptor
	980	*vseg_xp = rpc.args[2];
	981	}
	982
	983	/////////////////////////////////////////////
	984	void rpc_vmm_get_ref_vseg_server( xptr_t xp )
	985	{
	986	process_t * process;
	987	intptr_t vaddr;
	988	vseg_t * vseg_ptr;
	989	xptr_t vseg_xp;
	990
	991	// get client cluster identifier and pointer on RPC descriptor
	992	cxy_t client_cxy = (cxy_t)GET_CXY( xp );
	993	rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
	994
	995	// get input argument from client RPC descriptor
	996	process = (process_t *)(intptr_t)hal_remote_lwd( XPTR( client_cxy , &desc->args[0] ) );
	997	vaddr = (intptr_t)hal_remote_lwd( XPTR( client_cxy , &desc->args[1] ) );
	998
	999	// call local kernel function
	1000	vseg_ptr = vmm_get_vseg( process , vaddr );
	1001
	1002	// set output argument to client RPC descriptor
[16]	1003	if( vseg_ptr == NULL ) vseg_xp = XPTR_NULL;
	1004	else vseg_xp = XPTR( local_cxy , vseg_ptr );
[1]	1005	hal_remote_swd( XPTR( client_cxy , &desc->args[2] ) , (uint64_t)vseg_xp );
	1006	}
	1007
	1008
	1009	/////////////////////////////////////////////////////////////////////////////////////////
[23]	1010	// [21] Marshaling functions attached to RPC_VMM_GET_PTE
[1]	1011	/////////////////////////////////////////////////////////////////////////////////////////
	1012
	1013	////////////////////////////////////////////
	1014	void rpc_vmm_get_pte_client( cxy_t cxy,
	1015	process_t * process, // in
	1016	vpn_t vpn, // in
	1017	uint32_t * attr, // out
	1018	ppn_t * ppn, // out
	1019	error_t * error ) // out
	1020	{
	1021	// RPC must be remote
	1022	if( cxy == local_cxy )
	1023	{
	1024	printk("PANIC in %s : target is not remote\n", __FUNCTION__ );
	1025	hal_core_sleep();
	1026	}
	1027
	1028	// initialise RPC descriptor header
	1029	rpc_desc_t rpc;
	1030	rpc.index = RPC_VMM_GET_PTE;
	1031	rpc.response = 1;
	1032
	1033	// set input arguments in RPC descriptor
	1034	rpc.args[0] = (uint64_t)(intptr_t)process;
	1035	rpc.args[1] = (uint64_t)vpn;
	1036
	1037	// register RPC request in remote RPC fifo (blocking function)
	1038	rpc_send_sync( cxy , &rpc );
	1039
	1040	// get output argument from rpc descriptor
	1041	*attr = (uint32_t)rpc.args[2];
	1042	*ppn = (ppn_t)rpc.args[3];
	1043	*error = (error_t)rpc.args[4];
	1044	}
	1045
	1046	////////////////////////////////////////
	1047	void rpc_vmm_get_pte_server( xptr_t xp )
	1048	{
	1049	process_t * process;
	1050	vpn_t vpn;
	1051	uint32_t attr;
	1052	ppn_t ppn;
	1053	error_t error;
	1054
	1055	// get client cluster identifier and pointer on RPC descriptor
	1056	cxy_t client_cxy = (cxy_t)GET_CXY( xp );
	1057	rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
	1058
	1059	// get input argument "process" & "vpn" from client RPC descriptor
	1060	process = (process_t *)(intptr_t)hal_remote_lwd( XPTR( client_cxy , &desc->args[0] ) );
	1061	vpn = (vpn_t) hal_remote_lwd( XPTR( client_cxy , &desc->args[1] ) );
	1062
	1063	// call local kernel function
	1064	error = vmm_get_pte( process , vpn , &attr , &ppn );
	1065
	1066	// set output argument "attr" & "ppn" to client RPC descriptor
	1067	hal_remote_swd( XPTR( client_cxy , &desc->args[2] ) , (uint64_t)attr );
	1068	hal_remote_swd( XPTR( client_cxy , &desc->args[3] ) , (uint64_t)ppn );
	1069	hal_remote_swd( XPTR( client_cxy , &desc->args[4] ) , (uint64_t)error );
	1070	}
	1071
	1072	/////////////////////////////////////////////////////////////////////////////////////////
[23]	1073	// [22] Marshaling functions attached to RPC_KCM_ALLOC
[1]	1074	/////////////////////////////////////////////////////////////////////////////////////////
	1075
[23]	1076	//////////////////////////////////////////
	1077	void rpc_kcm_alloc_client( cxy_t cxy,
	1078	uint32_t kmem_type, // in
	1079	xptr_t * buf_xp ) // out
[1]	1080	{
	1081	// RPC must be remote
	1082	if( cxy == local_cxy )
	1083	{
	1084	printk("PANIC in %s : target is not remote\n", __FUNCTION__ );
	1085	hal_core_sleep();
	1086	}
	1087
	1088	// initialise RPC descriptor header
	1089	rpc_desc_t rpc;
	1090	rpc.index = RPC_THREAD_USER_CREATE;
	1091	rpc.response = 1;
	1092
[23]	1093	// set input arguments in RPC descriptor
	1094	rpc.args[0] = (uint64_t)kmem_type;
	1095
[1]	1096	// register RPC request in remote RPC fifo
	1097	rpc_send_sync( cxy , &rpc );
	1098
	1099	// get output arguments from RPC descriptor
[23]	1100	*buf_xp = (xptr_t)rpc.args[1];
[1]	1101	}
	1102
[23]	1103	//////////////////////////////////////
	1104	void rpc_kcm_alloc_server( xptr_t xp )
[1]	1105	{
	1106	// get client cluster identifier and pointer on RPC descriptor
	1107	cxy_t client_cxy = (cxy_t)GET_CXY( xp );
	1108	rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
	1109
[23]	1110	// get input argument "kmem_type" from client RPC descriptor
	1111	uint32_t kmem_type = (uint32_t)hal_remote_lwd( XPTR( client_cxy , &desc->args[0] ) );
	1112
	1113	// allocates memory for kcm
[1]	1114	kmem_req_t req;
[23]	1115	req.type = kmem_type;
[1]	1116	req.flags = AF_ZERO;
[23]	1117	void * buf_ptr = kmem_alloc( &req );
[1]	1118
	1119	// set output argument
[23]	1120	xptr_t buf_xp = XPTR( local_cxy , buf_ptr );
	1121	hal_remote_swd( XPTR( client_cxy , &desc->args[1] ) , (uint64_t)buf_xp );
[1]	1122	}
	1123
	1124	/////////////////////////////////////////////////////////////////////////////////////////
[23]	1125	// [23] Marshaling functions attached to RPC_KCM_FREE
[1]	1126	/////////////////////////////////////////////////////////////////////////////////////////
	1127
[23]	1128	/////////////////////////////////////////
	1129	void rpc_kcm_free_client( cxy_t cxy,
	1130	void * buf, // in
	1131	uint32_t kmem_type ) // in
[1]	1132	{
	1133	// RPC must be remote
	1134	if( cxy == local_cxy )
	1135	{
	1136	printk("PANIC in %s : target is not remote\n", __FUNCTION__ );
	1137	hal_core_sleep();
	1138	}
	1139
	1140	// initialise RPC descriptor header
	1141	rpc_desc_t rpc;
	1142	rpc.index = RPC_THREAD_USER_CREATE;
	1143	rpc.response = 1;
	1144
	1145	// set input arguments in RPC descriptor
[23]	1146	rpc.args[0] = (uint64_t)(intptr_t)buf;
	1147	rpc.args[1] = (uint64_t)kmem_type;
[1]	1148
	1149	// register RPC request in remote RPC fifo
	1150	rpc_send_sync( cxy , &rpc );
	1151	}
	1152
[23]	1153	/////////////////////////////////////
	1154	void rpc_kcm_free_server( xptr_t xp )
[1]	1155	{
	1156	// get client cluster identifier and pointer on RPC descriptor
	1157	cxy_t client_cxy = (cxy_t)GET_CXY( xp );
	1158	rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
	1159
[23]	1160	// get input arguments "buf" and "kmem_type" from client RPC descriptor
	1161	void * buf = (void *)(intptr_t)hal_remote_lwd( XPTR( client_cxy , &desc->args[0] ) );
	1162	uint32_t kmem_type = (uint32_t)hal_remote_lwd( XPTR( client_cxy , &desc->args[1] ) );
[1]	1163
	1164	// releases memory
	1165	kmem_req_t req;
[23]	1166	req.type = kmem_type;
	1167	req.ptr = buf;
	1168	kmem_free( &req );
[1]	1169	}
	1170
	1171	/////////////////////////////////////////////////////////////////////////////////////////
[23]	1172	// [24] Marshaling functions attached to RPC_MAPPER_MOVE
[1]	1173	/////////////////////////////////////////////////////////////////////////////////////////
	1174
[23]	1175	///////////////////////////////////////////
	1176	void rpc_mapper_move_client( cxy_t cxy,
	1177	mapper_t * mapper, // in
	1178	uint32_t to_buffer, // in
	1179	uint32_t file_offset, // in
	1180	void * buffer, // in
	1181	uint32_t size, // in
	1182	error_t * error ) // out
[1]	1183	{
	1184	// RPC must be remote
	1185	if( cxy == local_cxy )
	1186	{
[23]	1187	printk("PANIC in %s : target cluster is not remote\n", __FUNCTION__ );
[1]	1188	hal_core_sleep();
	1189	}
	1190
	1191	// initialise RPC descriptor header
	1192	rpc_desc_t rpc;
	1193	rpc.index = RPC_MAPPER_MOVE;
	1194	rpc.response = 1;
	1195
	1196	// set input arguments in RPC descriptor
	1197	rpc.args[0] = (uint64_t)(intptr_t)mapper;
[23]	1198	rpc.args[1] = (uint64_t)to_buffer;
	1199	rpc.args[2] = (uint64_t)file_offset;
	1200	rpc.args[3] = (uint64_t)(intptr_t)buffer;
	1201	rpc.args[4] = (uint64_t)size;
[1]	1202
[23]	1203	// register RPC request in remote RPC fifo (blocking function)
[1]	1204	rpc_send_sync( cxy , &rpc );
	1205
[23]	1206	// get output values from RPC descriptor
	1207	*error = (error_t)rpc.args[5];
[1]	1208	}
	1209
	1210	////////////////////////////////////////
	1211	void rpc_mapper_move_server( xptr_t xp )
	1212	{
[23]	1213	mapper_t * mapper;
	1214	uint32_t to_buffer;
	1215	uint32_t file_offset;
	1216	void * buffer;
	1217	uint32_t size;
	1218	error_t error;
[1]	1219
	1220	// get client cluster identifier and pointer on RPC descriptor
	1221	cxy_t client_cxy = (cxy_t)GET_CXY( xp );
[23]	1222	rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
[1]	1223
[23]	1224	// get arguments from client RPC descriptor
	1225	mapper = (mapper_t *)(intptr_t)hal_remote_lwd( XPTR( client_cxy , &desc->args[0] ) );
	1226	to_buffer = hal_remote_lwd( XPTR( client_cxy , &desc->args[1] ) );
	1227	file_offset = hal_remote_lwd( XPTR( client_cxy , &desc->args[2] ) );
	1228	buffer = (void *)(intptr_t)hal_remote_lwd( XPTR( client_cxy , &desc->args[3] ) );
	1229	size = hal_remote_lwd( XPTR( client_cxy , &desc->args[4] ) );
[1]	1230
[23]	1231	// call local kernel function
	1232	error = mapper_move( mapper,
	1233	to_buffer,
	1234	file_offset,
	1235	buffer,
	1236	size );
[1]	1237
[23]	1238	// set output argument to client RPC descriptor
	1239	hal_remote_swd( XPTR( client_cxy , &desc->args[5] ) , (uint64_t)error );
[1]	1240	}
	1241
	1242	/***************************************************************************************/
	1243	/********** Generic functions supporting RPCs : client side ************************/
	1244	/***************************************************************************************/
	1245
	1246	////////////////////////////////////////////
	1247	void rpc_send_sync( cxy_t server_cxy,
	1248	rpc_desc_t * rpc )
	1249	{
	1250	thread_t * this = CURRENT_THREAD;
	1251	uint32_t cores;
	1252	error_t error;
	1253	bool_t first;
	1254	reg_t sr_save;
	1255
	1256	// get client CPU and cluster coordinates
	1257	cxy_t client_cxy = local_cxy;
	1258	lid_t client_lid = CURRENT_CORE->lid;
	1259
	1260	// allocate and initialise an extended pointer on the RPC descriptor
	1261	xptr_t xp = XPTR( client_cxy , rpc );
	1262
	1263	// get local pointer on rpc_fifo in remote cluster with the
	1264	// assumption that addresses are identical in all clusters
	1265	rpc_fifo_t * rf = &LOCAL_CLUSTER->rpc_fifo;
	1266
	1267	// try to post an item in remote fifo
	1268	// deschedule and retry if remote fifo full
	1269	do
	1270	{
	1271	error = remote_fifo_put_item( XPTR( server_cxy , &rf->fifo ),
[68]	1272	(uint64_t *)&xp,
[1]	1273	&first );
	1274
	1275	if ( error )
	1276	{
	1277	printk("\n[WARNING] %s : core %d in cluster %x cannot post RPC to cluster %x\n",
	1278	__FUNCTION__ , client_lid , client_cxy , server_cxy );
	1279	if( thread_can_yield() ) sched_yield();
	1280	}
	1281	}
	1282	while( error );
	1283
	1284	rpc_dmsg("\n[INFO] %s on core %d in cluster %x sent RPC %p to cluster %x\n",
	1285	__FUNCTION__ , client_lid , client_cxy , rpc , server_cxy );
	1286
	1287	// send IPI if this is the first RPC in remote FIFO
	1288	// and no CPU is in kernel mode in server cluster.
	1289	// the selected CPU in server has the same lid as the client CPU.
	1290	if( first )
	1291	{
	1292	// get number of cores in kernel mode in server cluster
	1293	cores = hal_remote_lw( XPTR( server_cxy , &LOCAL_CLUSTER->cores_in_kernel ) );
	1294
	1295	if( cores == 0 ) // no core in kernel mode in server
	1296	{
[188]	1297	dev_pic_send_ipi( server_cxy , client_lid );
[1]	1298
	1299	rpc_dmsg("\n[INFO] %s : core %d in cluster %x send IPI to core %d in cluster %x\n",
	1300	__FUNCTION__, client_lid , client_cxy , client_lid , server_cxy );
	1301	}
	1302	}
	1303
	1304	// activate preemption to allow incoming RPC and avoid deadlock
	1305	if( this->type == THREAD_RPC ) hal_enable_irq( &sr_save );
	1306
	1307	// the sending thread poll the response slot until RPC completed
	1308	while( 1 )
	1309	{
	1310	if( rpc->response == 0 ) break;
	1311	}
	1312
	1313	// restore preemption
	1314	if( this->type == THREAD_RPC ) hal_restore_irq( sr_save );
	1315
	1316	} // end rpc_send_sync()
	1317
	1318
	1319
	1320	/***************************************************************************************/
	1321	/********** Generic functions supporting RPCs : server side ************************/
	1322	/***************************************************************************************/
	1323
	1324	///////////////////////////////////////////
	1325	void rpc_fifo_init( rpc_fifo_t * rpc_fifo )
	1326	{
	1327	rpc_fifo->count = 0;
	1328	rpc_fifo->owner = 0;
	1329	local_fifo_init( &rpc_fifo->fifo );
	1330	}
	1331
	1332	////////////////////////////////////////////////
	1333	error_t rpc_execute_all( rpc_fifo_t * rpc_fifo )
	1334	{
	1335	xptr_t xp; // extended pointer on RPC descriptor
	1336	uint32_t count; // handled RPC request counter
	1337	thread_t * this; // pointer on this RPC thread
	1338	core_t * core; // pointer on core running this thread
	1339	rpc_desc_t * desc; // pointer on RPC descriptor
	1340	uint32_t index; // RPC index
	1341	uint32_t expected; // number of expected responses
	1342	cxy_t client_cxy; // client cluster identifier
	1343	error_t error;
	1344
	1345	this = CURRENT_THREAD;
	1346	core = this->core;
	1347
	1348
	1349	// handle up to CONFIG_RPC_PENDING_MAX requests before exit
	1350	count = 0;
	1351	do
	1352	{
	1353	error = local_fifo_get_item( &rpc_fifo->fifo,
[68]	1354	(uint64_t *)&xp );
[1]	1355
	1356	if ( error == 0 ) // One RPC request successfully extracted from RPC_FIFO
	1357	{
	1358	rpc_dmsg("\n[INFO] %s : RPC_THREAD %x on core %x in cluster %x handles RPC %d\n"
	1359	__FUNCTION__ , this->trdid , core->lid , local_cxy , count );
	1360
	1361	// get client cluster identifier and pointer on RPC descriptor
	1362	client_cxy = (cxy_t)GET_CXY( xp );
	1363	desc = (rpc_desc_t *)GET_PTR( xp );
	1364
	1365	// get rpc index and expected responses from RPC descriptor
	1366	index = hal_remote_lw( XPTR( client_cxy , &desc->index ) );
	1367	expected = hal_remote_lw( XPTR( client_cxy , &desc->response ) );
	1368
	1369	// call the relevant server function
	1370	rpc_server[index]( xp );
	1371
	1372	// increment handled RPC counter
	1373	count++;
	1374
	1375	// notify RPC completion as required
	1376	if( expected == 1 ) hal_remote_sw( XPTR(client_cxy,&desc->response) , 0 );
	1377	if( expected > 1 ) hal_remote_atomic_add( XPTR(client_cxy,&desc->response) , -1 );
	1378	}
	1379
	1380	// exit loop in three cases:
	1381	// - fifo is empty
	1382	// - look has been released (because descheduling)
	1383	// - max number of RPCs has been reached
	1384	if( error \|\|
	1385	(rpc_fifo->owner != this->trdid) \|\|
	1386	(count > CONFIG_RPC_PENDING_MAX) ) break;
	1387	}
	1388	while( 1 )
	1389
	1390	rpc_dmsg("\n[INFO] %s running on core %d in cluster %x exit\n"
	1391	__FUNCTION__ , CURRENT_CORE->lid , local_cxy );
	1392
	1393	// update RPC_FIFO global counter
	1394	rpc_fifo->count += count;
	1395
	1396	return 0;
	1397	} // end rpc_execute_all()
	1398
	1399	////////////////////////////////////////////////////
	1400	error_t rpc_activate_thread( rpc_fifo_t * rpc_fifo )
	1401	{
	1402	core_t * core;
	1403	thread_t * thread;
	1404	thread_t * this;
	1405	scheduler_t * sched;
	1406	error_t error;
	1407	bool_t found;
	1408	reg_t sr_save;
	1409
	1410	this = CURRENT_THREAD;
	1411	core = this->core;
	1412	sched = &core->scheduler;
	1413	found = false;
	1414
	1415	// calling thread must be the RPC_FIFO owner
	1416	if( this->trdid != rpc_fifo->owner )
	1417	{
	1418	printk("\n[PANIC] in %s : calling thread is not RPC_FIFO owner\n", __FUNCTION__ );
	1419	hal_core_sleep();
	1420	}
	1421
	1422	// makes the calling thread not preemptable
	1423	// during activation / creation of the RPC thread
	1424	hal_disable_irq( &sr_save );
	1425
	1426	// search a free RPC thread (must be in THREAD_BLOCKED_IDLE state)
	1427	list_entry_t * iter;
	1428	LIST_FOREACH( &sched->k_root , iter )
	1429	{
	1430	thread = LIST_ELEMENT( iter , thread_t , sched_list );
	1431	if( (thread->type == THREAD_RPC) && (thread->blocked == THREAD_BLOCKED_IDLE ) )
	1432	{
	1433	found = true;
	1434	break;
	1435	}
	1436	}
	1437
	1438	if( found ) // activate this idle RPC thread
	1439	{
	1440	thread->blocked = 0;
	1441	}
	1442	else // create a new RPC thread
	1443	{
	1444	error = thread_kernel_create( &thread,
	1445	THREAD_RPC,
	1446	&rpc_thread_func,
	1447	NULL,
	1448	core->lid );
	1449	if( error )
	1450	{
	1451	hal_restore_irq( sr_save );
	1452	printk("\n[ERROR] in %s : no memory for new RPC thread in cluster %x\n",
	1453	__FUNCTION__ , local_cxy );
	1454	return ENOMEM;
	1455	}
	1456
	1457	rpc_dmsg("\n[INFO] %s creates RPC thread %x on core %x in cluster %x at cycle %d\n",
[101]	1458	__FUNCTION__ , thread , core->gid , local_cxy , hal_get_cycles() );
[1]	1459
	1460	// update core descriptor counter
[188]	1461	hal_atomic_add( &core->rpc_threads , 1 );
[1]	1462	}
	1463
	1464	// update owner in rpc_fifo
	1465	rpc_fifo->owner = thread->trdid;
	1466
	1467	rpc_dmsg ("\n[INFO] %s activates RPC thread %x on core %x in cluster %x at cycle %d\n",
[101]	1468	__FUNCTION__ , thread , core->gid , local_cxy , hal_get_cycles() );
[1]	1469
	1470	// current thread deschedules / RPC thread start execution
	1471	sched_switch_to( thread );
	1472
	1473	// restore IRQs for the calling thread
	1474	hal_restore_irq( sr_save );
	1475
	1476	// return success
	1477	return 0;
	1478
	1479	} // end rpc_activate_thread()
	1480
	1481	//////////////////
	1482	bool_t rpc_check()
	1483	{
	1484	thread_t * this = CURRENT_THREAD;
	1485	rpc_fifo_t * rpc_fifo = &LOCAL_CLUSTER->rpc_fifo;
	1486	error_t error;
	1487
[5]	1488	// calling thread does nothing if light lock already taken or FIFO empty
[1]	1489	if( (rpc_fifo->owner != 0) \|\| (local_fifo_is_empty( &rpc_fifo->fifo )) )
	1490	{
	1491	return false;
	1492	}
	1493
[5]	1494	// calling thread tries to take the light lock,
	1495	// and activates an RPC thread if success
[1]	1496	if( hal_atomic_test_set( &rpc_fifo->owner , this->trdid ) )
	1497	{
	1498	error = rpc_activate_thread( rpc_fifo );
	1499
	1500	if( error ) // cannot activate an RPC_THREAD
	1501	{
	1502	rpc_fifo->owner = 0;
	1503
	1504	printk("\n[ERROR] in %s : no memory to create a RPC thread for core %d"
	1505	" in cluster %x => do nothing\n",
	1506	__FUNCTION__ , CURRENT_CORE->lid , local_cxy );
	1507	}
	1508
	1509	return true;
	1510	}
	1511	else // light lock taken by another thread
	1512	{
	1513	return false;
	1514	}
[5]	1515	} // end rpc_check()
[1]	1516
	1517
	1518	//////////////////////
	1519	void rpc_thread_func()
	1520	{
	1521	// makes the calling thread not preemptable
	1522	hal_disable_irq( NULL );
	1523
	1524	thread_t * this = CURRENT_THREAD;
	1525	rpc_fifo_t * rpc_fifo = &LOCAL_CLUSTER->rpc_fifo;
	1526
	1527	rpc_dmsg("\n[INFO] RPC thread %x created on core %d in cluster %x at cycle %d\n",
[101]	1528	this->trdid , this->core->lid , local_cxy , hal_get_cycles() );
[1]	1529
	1530	// this infinite loop is not preemptable
	1531	// the RPC thread deschedule when the RPC_FIFO is empty
	1532	while(1)
	1533	{
	1534	// check fifo ownership (ownership should be given by rpc_activate()
	1535	if( this->trdid != rpc_fifo->owner )
	1536	{
	1537	printk("\n[PANIC] in %s : RPC_THREAD %x not owner of RPC_FIFO in cluster %x\n",
	1538	__FUNCTION__ , this->trdid , local_cxy );
	1539	hal_core_sleep();
	1540	}
	1541
	1542	// executes pending RPC(s)
	1543	rpc_execute_all( rpc_fifo );
	1544
	1545	// release rpc_fifo ownership (can be lost during RPC execution)
	1546	if( rpc_fifo->owner == this->trdid ) rpc_fifo->owner = 0;
	1547
	1548
	1549	// suicide if too much RPC threads for this core
	1550	if( this->core->rpc_threads > CONFIG_RPC_THREADS_MAX )
	1551	{
	1552	rpc_dmsg("\n[INFO] RPC thread %x suicide on core %d in cluster %x at cycle %d\n",
[101]	1553	this->trdid , this->core->lid , local_cxy , hal_get_cycles() );
[1]	1554
	1555	// update core descriptor counter
[188]	1556	hal_atomic_add( &this->core->rpc_threads , -1 );
[1]	1557
	1558	// suicide
	1559	thread_exit();
	1560	}
	1561
	1562	// block and deschedule
	1563	rpc_dmsg("\n[INFO] RPC thread %x deschedule on core %d in cluster %x at cycle %d\n",
[101]	1564	this->trdid , this->core->lid , local_cxy , hal_get_cycles() );
[1]	1565
	1566	thread_block( this , THREAD_BLOCKED_IDLE );
	1567	sched_yield();
	1568
	1569	rpc_dmsg("\n[INFO] RPC thread %x wake up on core %d in cluster %x at cycle %d\n",
[101]	1570	this->trdid , this->core->lid , local_cxy , hal_get_cycles() );
[1]	1571	}
	1572	} // end rpc_thread_func()
	1573

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