source: trunk/kernel/kern/chdev.c @ 570

Last change on this file since 570 was 564, checked in by alain, 6 years ago

Complete restructuration of kernel locks.

File size: 21.1 KB
RevLine 
[5]1/*
2 * chdev.c - channel device descriptor operations implementation.
3 *
4 * Authors  Alain Greiner   (2016)
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>
[457]25#include <hal_kernel_types.h>
[5]26#include <hal_special.h>
[447]27#include <hal_remote.h>
[407]28#include <hal_irqmask.h>
[16]29#include <printk.h>
[5]30#include <boot_info.h>
31#include <xlist.h>
32#include <kmem.h>
[407]33#include <scheduler.h>
[5]34#include <thread.h>
35#include <rpc.h>
36#include <chdev.h>
[23]37#include <devfs.h>
[5]38
[564]39//////////////////////////////////////////////////////////////////////////////////////
40// Extern global variables
41//////////////////////////////////////////////////////////////////////////////////////
[317]42
[564]43extern chdev_directory_t    chdev_dir;         // allocated in kernel_init.c
[317]44
[564]45
[438]46#if (DEBUG_SYS_READ & 1)
[435]47extern uint32_t enter_chdev_cmd_read;
48extern uint32_t exit_chdev_cmd_read;
49extern uint32_t enter_chdev_server_read;
50extern uint32_t exit_chdev_server_read;
[407]51#endif
[317]52
[438]53#if (DEBUG_SYS_WRITE & 1)
[435]54extern uint32_t enter_chdev_cmd_write;
55extern uint32_t exit_chdev_cmd_write;
56extern uint32_t enter_chdev_server_write;
57extern uint32_t exit_chdev_server_write;
58#endif
59
[5]60////////////////////////////////////////////
61char * chdev_func_str( uint32_t func_type ) 
62{
[564]63    switch ( func_type ) 
64    {
[527]65    case DEV_FUNC_RAM: return "RAM";
66    case DEV_FUNC_ROM: return "ROM";
67    case DEV_FUNC_FBF: return "FBF";
68    case DEV_FUNC_IOB: return "IOB";
69    case DEV_FUNC_IOC: return "IOC";
70    case DEV_FUNC_MMC: return "MMC";
71    case DEV_FUNC_DMA: return "DMA";
72    case DEV_FUNC_NIC: return "NIC";
73    case DEV_FUNC_TIM: return "TIM";
74    case DEV_FUNC_TXT: return "TXT";
75    case DEV_FUNC_ICU: return "ICU";
76    case DEV_FUNC_PIC: return "PIC";
77    default:           return "undefined";
78    }
[5]79}
80
81/////////////////////////////////////////
82chdev_t * chdev_create( uint32_t    func,
83                        uint32_t    impl,
84                        uint32_t    channel,
85                        uint32_t    is_rx,
86                        xptr_t      base )
87{
88    chdev_t    * chdev;
89    kmem_req_t   req;
90
91    // allocate memory for chdev
92    req.type   = KMEM_DEVICE;
93    req.flags  = AF_ZERO;
94    chdev      = (chdev_t *)kmem_alloc( &req );
95
96    if( chdev == NULL ) return NULL;
97
[564]98    // initialize lock
99    remote_busylock_init( XPTR( local_cxy , &chdev->wait_lock ), LOCK_CHDEV_QUEUE );
100
101    // initialise waiting queue
[5]102    xlist_root_init( XPTR( local_cxy , &chdev->wait_root ) );
103
104    // initialize attributes
105    chdev->func    =  func;
106    chdev->impl    =  impl;
107    chdev->channel =  channel;
108    chdev->is_rx   =  is_rx;
109    chdev->base    =  base; 
110
111    return chdev;
112
113}  // end chdev_create()
114
115///////////////////////////////////
116void chdev_print( chdev_t * chdev )
117{
118    printk("\n - func      = %s"
119           "\n - channel   = %d"
120           "\n - base      = %l"
121           "\n - cmd       = %x"
122           "\n - isr       = %x"
123           "\n - chdev     = %x\n",
124           chdev_func_str(chdev->func),
125           chdev->channel,
126           chdev->base,
127           chdev->cmd,
128           chdev->isr,
129           chdev );
130}
131
[407]132//////////////////////////////////////////////////
133void chdev_register_command( xptr_t     chdev_xp )
[5]134{
[407]135    thread_t * server_ptr;    // local pointer on server thread associated to chdev
[440]136    xptr_t     server_xp;     // extended pointer on server thread
[407]137    core_t   * core_ptr;      // local pointer on core running the server thread
[457]138    uint32_t   server_lid;    // core running the server thread local index
[564]139    xptr_t     lock_xp;       // extended pointer on lock protecting the chdev state
[407]140    uint32_t   save_sr;       // for critical section
[5]141
[438]142#if (DEBUG_SYS_READ & 1)
[435]143enter_chdev_cmd_read = (uint32_t)hal_get_cycles();
[418]144#endif
145
[438]146#if (DEBUG_SYS_WRITE & 1)
[435]147enter_chdev_cmd_write = (uint32_t)hal_get_cycles();
148#endif
149
[407]150    thread_t * this = CURRENT_THREAD;
151
[440]152    // get chdev cluster and local pointer
[5]153    cxy_t     chdev_cxy = GET_CXY( chdev_xp );
[440]154    chdev_t * chdev_ptr = GET_PTR( chdev_xp );
[5]155
[564]156// check calling thread can yield
157assert( (this->busylocks == 0),
158"cannot yield : busylocks = %d\n", this->busylocks );
159
[440]160    // get local and extended pointers on server thread
161    server_ptr = (thread_t *)hal_remote_lpt( XPTR( chdev_cxy , &chdev_ptr->server) );
162    server_xp  = XPTR( chdev_cxy , server_ptr );
163
164    // get local pointer on core running the server thread
165    core_ptr   = (core_t *)hal_remote_lpt( XPTR( chdev_cxy , &server_ptr->core ) );
166
167    // get server core local index
[564]168    server_lid = hal_remote_l32( XPTR( chdev_cxy , &core_ptr->lid ) );
[440]169
[438]170#if (DEBUG_CHDEV_CMD_RX || DEBUG_CHDEV_CMD_TX)
[564]171bool_t is_rx = hal_remote_l32( XPTR( chdev_cxy , &chdev_ptr->is_rx ) );
[437]172#endif
173   
[438]174#if DEBUG_CHDEV_CMD_RX
[437]175uint32_t rx_cycle = (uint32_t)hal_get_cycles();
[438]176if( (is_rx) && (DEBUG_CHDEV_CMD_RX < rx_cycle) )
[450]177printk("\n[DBG] %s : client_thread %x (%s) enter for RX / server = %x / cycle %d\n",
178__FUNCTION__, this, thread_type_str(this->type) , server_ptr, rx_cycle );
[437]179#endif
180
[438]181#if DEBUG_CHDEV_CMD_TX
[437]182uint32_t tx_cycle = (uint32_t)hal_get_cycles();
[438]183if( (is_rx == 0) && (DEBUG_CHDEV_CMD_TX < tx_cycle) )
[450]184printk("\n[DBG] %s : client_thread %x (%s) enter for TX / server = %x / cycle %d\n",
185__FUNCTION__, this, thread_type_str(this->type) , server_ptr, tx_cycle );
[437]186#endif
187
[440]188    // build extended pointer on client thread xlist
189    xptr_t  list_xp    = XPTR( local_cxy , &this->wait_list );
[5]190
[440]191    // build extended pointer on chdev waiting queue root
192    xptr_t  root_xp    = XPTR( chdev_cxy , &chdev_ptr->wait_root );
[5]193
[440]194    // build extended pointer on server thread blocked state
195    xptr_t  blocked_xp = XPTR( chdev_cxy , &server_ptr->blocked );
196
197    // build extended pointer on lock protecting chdev waiting queue
[564]198    lock_xp            = XPTR( chdev_cxy , &chdev_ptr->wait_lock );
[407]199
[450]200    // critical section for the following sequence:
[564]201    // (1) take the lock protecting the chdev state
[440]202    // (2) block the client thread
203    // (3) unblock the server thread if required
204    // (4) register client thread in server queue
205    // (5) send IPI to force server scheduling
206    // (6) release the lock protecting waiting queue
207    // (7) deschedule
208    // ... in this order
[407]209
[440]210    // enter critical section
211    hal_disable_irq( &save_sr );
[407]212
[564]213    // take the lock protecting chdev queue
214    remote_busylock_acquire( lock_xp );
[408]215
216    // block current thread
[436]217    thread_block( XPTR( local_cxy , CURRENT_THREAD ) , THREAD_BLOCKED_IO );
[408]218
[450]219#if (DEBUG_CHDEV_CMD_TX & 1)
220if( (is_rx == 0) && (DEBUG_CHDEV_CMD_TX < tx_cycle) )
221printk("\n[DBG] in %s : client thread %x blocked\n", __FUNCTION__, this );
222#endif
223
[457]224#if (DEBUG_CHDEV_CMD_RX & 1)
225if( (is_rx) && (DEBUG_CHDEV_CMD_RX < rx_cycle) )
226printk("\n[DBG] in %s : client thread %x blocked\n", __FUNCTION__, this );
227#endif
228
[446]229    // unblock server thread if required
[564]230    if( hal_remote_l32( blocked_xp ) & THREAD_BLOCKED_IDLE )
[440]231    thread_unblock( server_xp , THREAD_BLOCKED_IDLE );
232
[450]233#if (DEBUG_CHDEV_CMD_TX & 1)
234if( (is_rx == 0) && (DEBUG_CHDEV_CMD_TX < tx_cycle) )
[457]235printk("\n[DBG] in %s : TX server thread %x unblocked\n", __FUNCTION__, server_ptr );
[450]236#endif
237
[457]238#if (DEBUG_CHDEV_CMD_RX & 1)
239if( (is_rx) && (DEBUG_CHDEV_CMD_RX < rx_cycle) )
240printk("\n[DBG] in %s : RX server thread %x unblocked\n", __FUNCTION__, server_ptr );
241#endif
242
[5]243    // register client thread in waiting queue
[407]244    xlist_add_last( root_xp , list_xp );
[5]245
[450]246#if (DEBUG_CHDEV_CMD_TX & 1)
247if( (is_rx == 0)  && (DEBUG_CHDEV_CMD_TX < tx_cycle) )
248printk("\n[DBG] in %s : thread %x registered write request in chdev\n", __FUNCTION__, this );
249#endif
250 
[457]251#if (DEBUG_CHDEV_CMD_RX & 1)
252if( (is_rx)  && (DEBUG_CHDEV_CMD_RX < rx_cycle) )
253printk("\n[DBG] in %s : thread %x registered read request in chdev\n", __FUNCTION__, this );
254#endif
255 
[564]256    // send IPI to core running the server thread when server core != client core
[457]257    if( (server_lid != this->core->lid) || (local_cxy != chdev_cxy) )
[450]258    {
[457]259        dev_pic_send_ipi( chdev_cxy , server_lid ); 
260
[450]261#if (DEBUG_CHDEV_CMD_TX & 1)
262if( (is_rx == 0)  && (DEBUG_CHDEV_CMD_TX < tx_cycle) )
[457]263printk("\n[DBG] in %s : client thread %x sent IPI to TX server thread %x\n",
[450]264__FUNCTION__, this, server_ptr );
265#endif
266
[457]267#if (DEBUG_CHDEV_CMD_RX & 1)
268if( (is_rx)  && (DEBUG_CHDEV_CMD_RX < rx_cycle) )
269printk("\n[DBG] in %s : client thread %x sent IPI to RX server thread %x\n",
270__FUNCTION__, this, server_ptr );
271#endif
272
[450]273    }
274 
[564]275    // release lock protecting chdev queue
276    remote_busylock_release( lock_xp );
[440]277
[408]278    // deschedule
279    sched_yield("blocked on I/O");
[407]280
281    // exit critical section
282    hal_restore_irq( save_sr );
283
[438]284#if DEBUG_CHDEV_CMD_RX
[437]285rx_cycle = (uint32_t)hal_get_cycles();
[438]286if( (is_rx) && (DEBUG_CHDEV_CMD_RX < rx_cycle) )
[437]287printk("\n[DBG] %s : client_thread %x (%s) exit for RX / cycle %d\n",
288__FUNCTION__, this, thread_type_str(this->type) , rx_cycle );
[433]289#endif
290
[438]291#if DEBUG_CHDEV_CMD_TX
[437]292tx_cycle = (uint32_t)hal_get_cycles();
[438]293if( (is_rx == 0) && (DEBUG_CHDEV_CMD_TX < tx_cycle) )
[437]294printk("\n[DBG] %s : client_thread %x (%s) exit for TX / cycle %d\n",
295__FUNCTION__, this, thread_type_str(this->type) , tx_cycle );
296#endif
297
[438]298#if (DEBUG_SYS_READ & 1)
[435]299exit_chdev_cmd_read = (uint32_t)hal_get_cycles();
[418]300#endif
301
[438]302#if (DEBUG_SYS_WRITE & 1)
[435]303exit_chdev_cmd_write = (uint32_t)hal_get_cycles();
304#endif
305
[5]306}  // end chdev_register_command()
307
308///////////////////////////////////////////////
309void chdev_sequencial_server( chdev_t * chdev )
310{
311    xptr_t          client_xp;    // extended pointer on waiting thread
312    cxy_t           client_cxy;   // cluster of client thread
313    thread_t      * client_ptr;   // local pointer on client thread
[407]314    thread_t      * server;       // local pointer on server thread
[5]315    xptr_t          root_xp;      // extended pointer on device waiting queue root
[407]316    xptr_t          lock_xp;      // extended pointer on lock ptotecting chdev queue
[5]317
318    server = CURRENT_THREAD;
319
[564]320    // build extended pointer on root of client threads queue
[5]321    root_xp = XPTR( local_cxy , &chdev->wait_root );
[564]322
323    // build extended pointer on lock protecting client threads queue
[407]324    lock_xp = XPTR( local_cxy , &chdev->wait_lock );
[5]325
[407]326        // This infinite loop is executed by the DEV thread
327    // to handle commands registered in the chdev queue.
[5]328    while( 1 )
329    {
[564]330
331#if DEBUG_CHDEV_SERVER_RX
332uint32_t rx_cycle = (uint32_t)hal_get_cycles();
333if( (chdev->is_rx) && (DEBUG_CHDEV_SERVER_RX < rx_cycle) )
334printk("\n[DBG] %s : dev_thread %x start RX / cycle %d\n",
335__FUNCTION__ , server->trdid , rx_cycle );
336#endif
337
338#if DEBUG_CHDEV_SERVER_TX
339uint32_t tx_cycle = (uint32_t)hal_get_cycles();
340if( (chdev->is_rx == 0) && (DEBUG_CHDEV_SERVER_TX < tx_cycle) )
341printk("\n[DBG] %s : dev_thread %x start TX / cycle %d\n",
342__FUNCTION__ , server->trdid , tx_cycle );
343#endif
344
[407]345        // get the lock protecting the waiting queue
[564]346        remote_busylock_acquire( lock_xp );
[407]347
[5]348        // check waiting queue state
[407]349        if( xlist_is_empty( root_xp ) ) // waiting queue empty
[5]350        {
[564]351
352#if DEBUG_CHDEV_SERVER_RX
353rx_cycle = (uint32_t)hal_get_cycles();
354if( (chdev->is_rx) && (DEBUG_CHDEV_SERVER_RX < rx_cycle) )
355printk("\n[DBG] %s : dev_thread %x found RX queue empty => blocks / cycle %d\n",
356__FUNCTION__ , server->trdid , rx_cycle );
357#endif
358
359#if DEBUG_CHDEV_SERVER_TX
360tx_cycle = (uint32_t)hal_get_cycles();
361if( (chdev->is_rx == 0) && (DEBUG_CHDEV_SERVER_TX < tx_cycle) )
362printk("\n[DBG] %s : dev_thread %x found TX queue empty => blocks / cycle %d\n",
363__FUNCTION__ , server->trdid , tx_cycle );
364#endif
365
[5]366            // release lock
[564]367            remote_busylock_release( lock_xp );
[5]368
[440]369            // block
370            thread_block( XPTR( local_cxy , server ) , THREAD_BLOCKED_IDLE ); 
371
[564]372// check server thread can yield
373assert( (server->busylocks == 0),
374"cannot yield : busylocks = %d\n", server->busylocks );
375
[408]376            // deschedule
377            sched_yield("I/O queue empty");
[5]378        } 
[407]379        else                            // waiting queue not empty
[5]380        {
[407]381            // get extended pointer on first client thread
[564]382            client_xp = XLIST_FIRST( root_xp , thread_t , wait_list );
[5]383
[440]384            // get client thread cluster and local pointer
[407]385            client_cxy = GET_CXY( client_xp );
[440]386            client_ptr = GET_PTR( client_xp );
[407]387
[440]388            // remove this first client thread from waiting queue
389            xlist_unlink( XPTR( client_cxy , &client_ptr->wait_list ) );
390
391            // release lock
[564]392            remote_busylock_release( lock_xp );
[440]393
[438]394#if DEBUG_CHDEV_SERVER_RX
[564]395rx_cycle = (uint32_t)hal_get_cycles();
[438]396if( (chdev->is_rx) && (DEBUG_CHDEV_SERVER_RX < rx_cycle) )
[564]397printk("\n[DBG] %s : dev_thread %x for RX found client thread %x in process %x / cycle %d\n",
398__FUNCTION__, server->trdid ,client_ptr->trdid ,client_ptr->process->pid, rx_cycle );
[437]399#endif
400
[438]401#if DEBUG_CHDEV_SERVER_TX
[564]402tx_cycle = (uint32_t)hal_get_cycles();
[438]403if( (chdev->is_rx == 0) && (DEBUG_CHDEV_SERVER_TX < tx_cycle) )
[564]404printk("\n[DBG] %s : dev_thread %x for TX found client thread %x in process %x / cycle %d\n",
405__FUNCTION__, server->trdid ,client_ptr->trdid ,client_ptr->process->pid, tx_cycle );
[437]406#endif
407
[438]408#if (DEBUG_SYS_READ & 1)
[437]409enter_chdev_server_read = (uint32_t)hal_get_cycles();
410#endif
411
[438]412#if (DEBUG_SYS_WRITE & 1)
[437]413enter_chdev_server_write = (uint32_t)hal_get_cycles();
414#endif
415
[407]416            // call driver command function to execute I/O operation
417            chdev->cmd( client_xp );
[5]418       
[418]419            // unblock client thread
420            thread_unblock( client_xp , THREAD_BLOCKED_IO );
421
[438]422#if DEBUG_CHDEV_SERVER_RX
[437]423rx_cycle = (uint32_t)hal_get_cycles();
[438]424if( (chdev->is_rx) && (DEBUG_CHDEV_SERVER_RX < rx_cycle) )
[564]425printk("\n[DBG] %s : dev_thread %x completes RX for client %x in process %x / cycle %d\n",
426__FUNCTION__, server->trdid, client_ptr->trdid, client_ptr->process->pid, rx_cycle );
[433]427#endif
[5]428
[438]429#if DEBUG_CHDEV_SERVER_TX
[437]430tx_cycle = (uint32_t)hal_get_cycles();
[438]431if( (chdev->is_rx == 0) && (DEBUG_CHDEV_SERVER_TX < tx_cycle) )
[564]432printk("\n[DBG] %s : dev_thread %x completes TX for client %x in process %x / cycle %d\n",
433__FUNCTION__, server->trdid, client_ptr->trdid, client_ptr->process->pid, tx_cycle );
[437]434#endif
435
[438]436#if (DEBUG_SYS_READ & 1)
[435]437exit_chdev_server_read = (uint32_t)hal_get_cycles();
[407]438#endif
439
[438]440#if (DEBUG_SYS_WRITE & 1)
[435]441exit_chdev_server_write = (uint32_t)hal_get_cycles();
442#endif
443
[407]444        }
[5]445    }  // end while
446}  // end chdev_sequencial_server()
447
[428]448////////////////////////////////////////
449xptr_t chdev_from_file( xptr_t file_xp )
450{
451    cxy_t         file_cxy;
452    vfs_file_t  * file_ptr;
453    uint32_t      inode_type;
454    vfs_inode_t * inode_ptr;
455    chdev_t     * chdev_ptr;
456
[492]457    assert( (file_xp != XPTR_NULL) ,
[440]458    "file_xp == XPTR_NULL\n" );
459
[428]460    // get cluster and local pointer on remote file descriptor
461    // associated inode and chdev are stored in same cluster as the file desc.
462    file_cxy  = GET_CXY( file_xp );
463    file_ptr  = (vfs_file_t *)GET_PTR( file_xp );
464
465    // get inode type from file descriptor
[564]466    inode_type = hal_remote_l32( XPTR( file_cxy , &file_ptr->type ) );
[428]467    inode_ptr  = (vfs_inode_t *)hal_remote_lpt( XPTR( file_cxy , &file_ptr->inode ) );
468
[492]469    assert( (inode_type == INODE_TYPE_DEV) ,
[440]470    "inode type %d is not INODE_TYPE_DEV\n", inode_type );
[428]471
472    // get chdev local pointer from inode extension
473    chdev_ptr = (chdev_t *)hal_remote_lpt( XPTR( file_cxy , &inode_ptr->extend ) );
474
475    return XPTR( file_cxy , chdev_ptr );
476
477}  // end chdev_from_file()
478
[564]479//////////////////////////////
[485]480void chdev_dir_display( void )
[317]481{
[428]482    uint32_t  i;
483    cxy_t     cxy;
484    chdev_t * ptr;
485    uint32_t  base;
[317]486
[428]487    // get pointers on TXT0 chdev
488    xptr_t    txt0_xp  = chdev_dir.txt_tx[0];
489    cxy_t     txt0_cxy = GET_CXY( txt0_xp );
490    chdev_t * txt0_ptr = GET_PTR( txt0_xp );
[317]491
[564]492    // get extended pointer on TXT0 lock
[428]493    xptr_t  lock_xp = XPTR( txt0_cxy , &txt0_ptr->wait_lock );
[317]494
[564]495    // get TXT0 lock
496    remote_busylock_acquire( lock_xp );
[317]497
[428]498    // header
499    nolock_printk("\n***** external chdevs directory *****\n");
[317]500
[428]501    // IOB
[564]502    if (chdev_dir.iob != XPTR_NULL )
[545]503    {
504        cxy  = GET_CXY( chdev_dir.iob );
505        ptr  = GET_PTR( chdev_dir.iob );
[564]506        base = (uint32_t)hal_remote_l64( XPTR( cxy , &ptr->base ) );
[545]507        nolock_printk("  - iob       : cxy = %X / ptr = %X / base = %X\n", cxy, ptr, base);
508    }
[407]509
[428]510    // PIC
511    cxy  = GET_CXY( chdev_dir.pic );
512    ptr  = GET_PTR( chdev_dir.pic );
[564]513    base = (uint32_t)hal_remote_l64( XPTR( cxy , &ptr->base ) );
[428]514    nolock_printk("  - pic       : cxy = %X / ptr = %X / base = %X\n", cxy, ptr, base);
[407]515
[428]516    // TXT
517    for( i = 0 ; i < LOCAL_CLUSTER->nb_txt_channels ; i++ )
518    {
519        cxy = GET_CXY( chdev_dir.txt_rx[i] );
520        ptr = GET_PTR( chdev_dir.txt_rx[i] );
[564]521        base = (uint32_t)hal_remote_l64( XPTR( cxy , &ptr->base ) );
[428]522        nolock_printk("  - txt_rx[%d] : cxy = %X / ptr = %X / base = %X\n", i, cxy, ptr, base);
[407]523
[428]524        cxy = GET_CXY( chdev_dir.txt_tx[i] );
525        ptr = GET_PTR( chdev_dir.txt_tx[i] );
[564]526        base = (uint32_t)hal_remote_l64( XPTR( cxy , &ptr->base ) );
[428]527        nolock_printk("  - txt_tx[%d] : cxy = %X / ptr = %X / base = %X\n", i, cxy, ptr, base);
528    }
[317]529
[428]530    // IOC
531    for( i = 0 ; i < LOCAL_CLUSTER->nb_ioc_channels ; i++ )
532    {
533        cxy = GET_CXY( chdev_dir.ioc[i] );
534        ptr = GET_PTR( chdev_dir.ioc[i] );
[564]535        base = (uint32_t)hal_remote_l64( XPTR( cxy , &ptr->base ) );
[428]536        nolock_printk("  - ioc[%d]    : cxy = %X / ptr = %X / base = %X\n", i, cxy, ptr, base);
537    }
[317]538
[428]539    // FBF
540    for( i = 0 ; i < LOCAL_CLUSTER->nb_fbf_channels ; i++ )
541    {
542        cxy  = GET_CXY( chdev_dir.fbf[i] );
543        ptr  = GET_PTR( chdev_dir.fbf[i] );
[564]544        base = (uint32_t)hal_remote_l64( XPTR( cxy , &ptr->base ) );
[428]545        nolock_printk("  - fbf[%d]    : cxy = %X / ptr = %X / base = %X\n", i, cxy, ptr, base);
546    }
[317]547
[428]548    // NIC
549    for( i = 0 ; i < LOCAL_CLUSTER->nb_nic_channels ; i++ )
550    {
551        cxy = GET_CXY( chdev_dir.nic_rx[i] );
552        ptr = GET_PTR( chdev_dir.nic_rx[i] );
[564]553        base = (uint32_t)hal_remote_l64( XPTR( cxy , &ptr->base ) );
[428]554        nolock_printk("  - nic_rx[%d] : cxy = %X / ptr = %X / base = %X\n", i, cxy, ptr, base);
[317]555
[428]556        cxy = GET_CXY( chdev_dir.nic_tx[i] );
557        ptr = GET_PTR( chdev_dir.nic_tx[i] );
[564]558        base = (uint32_t)hal_remote_l64( XPTR( cxy , &ptr->base ) );
[428]559        nolock_printk("  - nic_tx[%d] : cxy = %X / ptr = %X / base = %X\n", i, cxy, ptr, base);
560    }
[317]561
[428]562    // release lock
[564]563    remote_busylock_release( lock_xp );
[428]564
[317]565}  // end chdev_dir_display()
566
[447]567///////////////////////////////////////////
568void chdev_queue_display( xptr_t chdev_xp )
569{
570    cxy_t       chdev_cxy;          // chdev cluster
571    chdev_t   * chdev_ptr;          // chdev local pointer
572    xptr_t      root_xp;            // extended pointer on waiting queuue root
573    char        name[16];           // local copie of chdev name
574    xptr_t      iter_xp;            // extended pointer on xlist_t field in waiting thread
575    xptr_t      thread_xp;          // extended pointer on thread registered in queue
576    cxy_t       thread_cxy;         // cluster identifier for waiting thread
577    thread_t  * thread_ptr;         // local pointer on waiting thread
578    trdid_t     trdid;              // waiting thread identifier
579    process_t * process;            // waiting thread process descriptor
580    pid_t       pid;                // waiting thread process identifier
581
582    // get cluster and local pointer on chdev
583    chdev_cxy = GET_CXY( chdev_xp );
584    chdev_ptr = GET_PTR( chdev_xp );
585
586    // get extended pointer on root of requests queue
[450]587    root_xp = XPTR( chdev_cxy , &chdev_ptr->wait_root );
[447]588
589    // get chdev name
590    hal_remote_strcpy( XPTR( local_cxy , name ), XPTR( chdev_cxy , chdev_ptr->name ) );
591
[564]592    // get pointers on TXT0 chdev
593    xptr_t    txt0_xp  = chdev_dir.txt_tx[0];
594    cxy_t     txt0_cxy = GET_CXY( txt0_xp );
595    chdev_t * txt0_ptr = GET_PTR( txt0_xp );
596
597    // get extended pointer on TXT0 lock
598    xptr_t  lock_xp = XPTR( txt0_cxy , &txt0_ptr->wait_lock );
599
600    // get TXT0 lock
601    remote_busylock_acquire( lock_xp );
602
[447]603    // check queue empty
604    if( xlist_is_empty( root_xp ) )
605    {
[564]606        nolock_printk("\n***** Waiting queue empty for chdev %s\n", name ); 
[447]607    }
608    else
609    {
[564]610        nolock_printk("\n***** Waiting queue for chdev %s\n", name ); 
[447]611
612        // scan the waiting queue
613        XLIST_FOREACH( root_xp , iter_xp )
614        {
615            thread_xp  = XLIST_ELEMENT( iter_xp , thread_t , wait_list );
616            thread_cxy = GET_CXY( thread_xp );
617            thread_ptr = GET_PTR( thread_xp );
[564]618            trdid      = hal_remote_l32 ( XPTR( thread_cxy , &thread_ptr->trdid   ) );
[447]619            process    = hal_remote_lpt( XPTR( thread_cxy , &thread_ptr->process ) );
[564]620                        pid        = hal_remote_l32 ( XPTR( thread_cxy , &process->pid        ) );
[447]621
[564]622            nolock_printk("- thread %X / cluster %X / trdid %X / pid %X\n",
[450]623            thread_ptr, thread_cxy, trdid, pid );
[447]624        }
625    }
[564]626
627    // release TXT0 lock
628    remote_busylock_release( lock_xp );
629
[447]630}  // end chdev_queue_display()
631
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