Changeset 23 for trunk/kernel/devices


Ignore:
Timestamp:
Jun 18, 2017, 10:06:41 PM (7 years ago)
Author:
alain
Message:

Introduce syscalls.

Location:
trunk/kernel/devices
Files:
12 edited

Legend:

Unmodified
Added
Removed

  • trunk/kernel/devices/dev_dma.c

    r3 r23  
    4545void dev_dma_init( chdev_t * chdev )
    4646{
    47     // get implementation index from DMA chdev descriptor
    48     uint32_t impl = chdev->impl;
     47    // get implementation & channel from DMA chdev descriptor
     48    uint32_t impl    = chdev->impl;
     49    uint32_t channel = chdev->channel;
     50
     51    // set chdev name
     52    snprintf( chdev->name , 16 , "dma_%d_%x" , channel , local_cxy );
    4953
    5054    // set field "cmd", "isr", and call the relevant driver init function
    … …  
    5963        assert( false , __FUNCTION__ , "undefined DMA implementation" );
    6064    }
    61 
    62     // get DMA channel index
    63     uint32_t channel = chdev->channel;
    6465
    6566    // get DMA HWI IRQ index

  • trunk/kernel/devices/dev_fbf.c

    r14 r23  
    5757    uint32_t  impl = chdev->impl;
    5858
     59    // set chdev name
     60    strcpy( chdev->name, "fbf" );
    5961    // call driver init function
    6062    if( impl == IMPL_FBF_SCL )
    … …  
    136138    error_t     error;
    137139    paddr_t     buf_paddr;
    138     bool_t      ident = CONFIG_KERNEL_IDENTITY;
    139140
    140141    thread_t * this = CURRENT_THREAD;              // pointer on client thread
    141142
    142143    // Get buffer physical address
    143     error = vmm_v2p_translate( ident , buffer , &buf_paddr );
     144    error = vmm_v2p_translate( CONFIG_KERNEL_IDENTITY_MAP , buffer , &buf_paddr );
    144145 
    145146    if( error )

  • trunk/kernel/devices/dev_icu.c

    r14 r23  
    4747                   uint32_t  pti_nr )
    4848{
     49    // set chdev name
     50    snprintf( icu->name , 16 , "icu_%x" , local_cxy );
     51
    4952    // set ICU chdev extension fields
    5053    icu->ext.icu.hwi_nr     = hwi_nr;

  • trunk/kernel/devices/dev_iob.c

    r14 r23  
    3636    // get implementation
    3737    uint32_t  impl = chdev->impl;
     38
     39    // set chdev name
     40    strcpy( chdev->name , "iob" );
    3841
    3942    // call driver init function

  • trunk/kernel/devices/dev_ioc.c

    r14 r23  
    5555    uint32_t  channel = chdev->channel;
    5656
     57    // set chdev name
     58    strcpy( chdev->name , "ioc" );
     59
    5760    // set driver specific fields in chdev descriptor and call driver init function
    5861    if( impl == IMPL_IOC_BDV )
    … …  
    6467    else if( impl == IMPL_IOC_HBA )
    6568    {
    66         chdev->cmd = &soclib_hba_command;
     69        chdev->cmd = &soclib_hba_cmd;
    6770        chdev->isr = &soclib_hba_isr;
    6871        soclib_hba_init( chdev );
    … …  
    109112//////////////////////////////////////////////////////////////////////////////////
    110113// This static function is called by dev_ioc_read() & dev_ioc_write() functions.
    111 // It builds and registers the command in the calling thread descriptor, after
    112 // translation of buffer virtual address to physical address.
     114// It builds and registers the command in the calling thread descriptor.
    113115// Then, it registers the calling thead in chdev waiting queue.
    114116// Finally it blocks on the THREAD_BLOCKED_DEV condition and deschedule.
    115117////////////////////////////////////i/////////////////////////////////////////////
    116 static error_t dev_ioc_access( bool_t    to_mem,
    117                                char    * buffer,
    118                                uint32_t  lba,
    119                                uint32_t  count )
     118static error_t dev_ioc_access( uint32_t   cmd_type,
     119                               uint8_t  * buffer,
     120                               uint32_t   lba,
     121                               uint32_t   count )
    120122{
    121123    thread_t * this = CURRENT_THREAD;              // pointer on client thread
    122124
    123     error_t     error;
    124     paddr_t     buf_paddr;
    125 
    126     // Get buffer physical address
    127     error = vmm_v2p_translate( CONFIG_KERNEL_IDENTITY , buffer , &buf_paddr );
    128  
    129     if( error )  return EINVAL;
    130 
    131125    ioc_dmsg("\n[INFO] in %s : thread %x in process %x"
    132              " for lba = %x / vaddr = %x / paddr = %l / at cycle %d\n",
     126             " for lba = %x / buffer = %x / at cycle %d\n",
    133127             __FUNCTION__ , this->trdid , this->process->pid ,
    134              lba , (uint32_t)buffer , buf_paddr , hal_time_stamp() );
     128             lba , (intptr_t)buffer , hal_time_stamp() );
    135129
    136130#if USE_IOB    // software L2/L3 cache coherence for memory buffer
    137131
    138     if ( to_mem )  dev_mmc_inval( buf_paddr, count<<9 );
    139     else           dev_mmc_sync( buf_paddr, count<<9 );
     132    if ( type == IOC_READ )  dev_mmc_inval( XPTR( local_cxy , buffer ) , count<<9 );
     133    else                     dev_mmc_sync ( XPTR( local_cxy , buffer ) , count<<9 );
    140134
    141135#endif     // end software L2/L3 cache coherence
    … …  
    148142    // register command in calling thread descriptor
    149143    this->command.ioc.dev_xp    = dev_xp;
    150     this->command.ioc.to_mem    = to_mem;
     144    this->command.ioc.type      = cmd_type;
    151145    this->command.ioc.buf_xp    = XPTR( local_cxy , buffer );
    152146    this->command.ioc.lba       = lba;
    … …  
    169163
    170164////////////////////////////////////////////
    171 error_t dev_ioc_read( char         * buffer,
     165error_t dev_ioc_read( uint8_t      * buffer,
    172166                      uint32_t       lba,
    173167                      uint32_t       count )
    174168{
    175     return dev_ioc_access( true , buffer , lba , count );
     169    return dev_ioc_access( IOC_READ , buffer , lba , count );
    176170} 
    177171
    178172////////////////////////////////////////////
    179 error_t dev_ioc_write( char         * buffer,
    180                        uint32_t       lba,
    181                        uint32_t       count )
    182 {
    183     return dev_ioc_access( false , buffer , lba , count );
     173error_t dev_ioc_write( uint8_t     * buffer,
     174                       uint32_t      lba,
     175                       uint32_t      count )
     176{
     177    return dev_ioc_access( IOC_WRITE , buffer , lba , count );
    184178}
     179
     180/////////////////////////////////////////////
     181error_t dev_ioc_sync_read( uint8_t  * buffer,
     182                           uint32_t   lba,
     183                           uint32_t   count )
     184{
     185    // get pointer on calling thread
     186    thread_t * this = CURRENT_THREAD;
     187
     188#if USE_IOB    // software L2/L3 cache coherence for memory buffer
     189
     190    dev_mmc_inval( XPTR( local_cxy , buffer ) , count<<9 );
     191
     192#endif         // end software L2/L3 cache coherence
     193
     194    // get extended pointer on IOC[0] chdev
     195    xptr_t  dev_xp = chdev_dir.ioc[0];
     196
     197    assert( (dev_xp != XPTR_NULL) , __FUNCTION__ , "undefined IOC chdev descriptor" );
     198
     199    // register command in calling thread descriptor
     200    this->command.ioc.dev_xp    = dev_xp;
     201    this->command.ioc.type      = IOC_SYNC_READ;
     202    this->command.ioc.buf_xp    = XPTR( local_cxy , buffer );
     203    this->command.ioc.lba       = lba;
     204    this->command.ioc.count     = count;
     205
     206    // get driver command function
     207    cxy_t       dev_cxy = GET_CXY( dev_xp );
     208    chdev_t   * dev_ptr = (chdev_t *)GET_PTR( dev_xp );
     209    dev_cmd_t * cmd = (dev_cmd_t *)hal_remote_lpt( XPTR( dev_cxy , &dev_ptr->cmd ) );
     210
     211    // call directly driver command
     212    cmd( XPTR( local_cxy , this ) );
     213
     214    // return I/O operation status from calling thread descriptor
     215    return this->command.ioc.error;
     216}
     217

  • trunk/kernel/devices/dev_ioc.h

    r14 r23  
    3838 * magnetic hard disk or a SD card, that can store blocks of data in a linear array
    3939 * of sectors indexed by a simple lba (logic block address).
    40  * It supports two command types:
    41  * - READ  : move a given number of contiguous blocks from device to a memory buffer.
    42  * - WRITE : move a given number of contiguous blocks from a memory buffer to device.
    43  *
    44  * An I/O operation requires dynamic ressource allocation, and is always blocking for
    45  * the client thread. The general scenario is detailed below.
     40 * It supports three command types:
     41 * - READ      : move blocks from device to memory, with a descheduling policy.
     42 * - WRITE     : move blocks from memory to device, with a descheduling policy.
     43 * - SYNC_READ : move blocks from device to memory, with a busy waiting policy.
     44
     45 * A READ or WRITE operation requires dynamic ressource allocation. The calling thread
     46 * is descheduled, and the work is done by the server thread associated to IOC device.
     47 * The general scenario is detailed below.
    4648 * A) the client thread start the I/O operation, by calling the dev_ioc_read()
    4749 *    or the dev_ioc_write() kernel functions that perform the following actions:
    … …  
    5052 *    3) it access the PIC to link the WTI mailbox to the IOC IRQ.
    5153 *    4) it builds the command descriptor.
    52  *    5) it registers in the IOCdevice waiting queue.
     54 *    5) it registers in the IOC device waiting queue.
    5355 *    6) itblock on the THREAD_BLOCKED_IO condition and deschedule.
    5456 * B) The server thread attached to the IOC device descriptor handles the commands
    … …  
    6163 *    2) disable the WTI IRQ in the client cluster ICU and update interrupt vector.
    6264 *    3) release the WTI mailbox to the client cluster WTI allocator.
     65 *
     66 * The SYNC_READ operation is used by the kernel in the initialisation phase. It does
     67 * not uses the IOC device waiting queue and server thread, and does not use the IOC IRQ,
     68 * but implement a busy-waiting policy for the calling thread.
    6369 *****************************************************************************************/
    6470
    … …  
    9399 *****************************************************************************************/
    94100
     101enum
     102{
     103    IOC_READ       = 0,
     104    IOC_WRITE      = 1,
     105    IOC_SYNC_READ  = 2,
     106};
     107
    95108typedef struct ioc_command_s
    96109{
    97     xptr_t      dev_xp;      /*! extended pointer on device descriptor                    */
    98     uint32_t    to_mem;     /*! requested operation (WRITE if zero / READ if non-zero)   */
     110    xptr_t      dev_xp;     /*! extended pointer on device descriptor                    */
     111    uint32_t    type;       /*! IOC_READ / IOC_WRITE / IOC_SYNC_READ                     */
    99112    uint32_t    lba;        /*! first block index                                        */
    100113    uint32_t    count;      /*! number of blocks                                         */
    … …  
    119132/******************************************************************************************
    120133 * This blocking function try to tranfer one or several contiguous blocks of data
    121  * from the block device to a memory buffer. The corresponding request is actually
     134 * from the block device to a local memory buffer. The corresponding request is actually
    122135 * registered in the device pending request queue, and the calling thread is descheduled,
    123136 * waiting on transfer completion. It will be resumed by the IRQ signaling completion.
    124137 * It must be called in the client cluster.
    125138 ******************************************************************************************
    126  * @ buffer    : local pointer on target buffer in memory.
     139 * @ buffer    : local pointer on target buffer in memory (must be block aligned).
    127140 * @ lba       : first block index on device.
    128141 * @ count     : number of blocks to transfer.
    129142 * @ returns 0 if success / returns EINVAL if error.
    130143 *****************************************************************************************/
    131 error_t dev_ioc_read( char         * buffer,
     144error_t dev_ioc_read( uint8_t      * buffer,
    132145                      uint32_t       lba,
    133146                      uint32_t       count );
    … …  
    135148/******************************************************************************************
    136149 * This blocking function try to tranfer one or several contiguous blocks of data
    137  * from a memory buffer to the block device. The corresponding request is actually
     150 * from a local memory buffer to the block device. The corresponding request is actually
    138151 * registered in the device pending request queue, and the calling thread is descheduled,
    139152 * waiting on transfer completion. It will be resumed by the IRQ signaling completion.
    140153 * It must be called in the client cluster.
    141154 ******************************************************************************************
    142  * @ buffer    : local pointer on source buffer in memory.
     155 * @ buffer    : local pointer on source buffer in memory (must be block aligned).
    143156 * @ lba       : first block index on device.
    144157 * @ count     : number of blocks to transfer.
    145158 * @ returns 0 if success / returns EINVAL if error.
    146159 *****************************************************************************************/
    147 error_t dev_ioc_write( char         * buffer,
     160error_t dev_ioc_write( uint8_t      * buffer,
    148161                       uint32_t       lba,
    149162                       uint32_t       count );
    150163
     164/******************************************************************************************
     165 * This blocking function try to tranfer one or several contiguous blocks of data
     166 * from the block device to a memory buffer.
     167 * It does  not uses the IOC device waiting queue and server thread, and does not use
     168 * the IOC IRQ, but call directly the relevant OIC driver, implementing a busy-waiting
     169 * policy for the calling thread.
     170 * It must be called in the client cluster.
     171 ******************************************************************************************
     172 * @ buffer    : local pointer on target buffer in memory (must be block aligned).
     173 * @ lba       : first block index on device.
     174 * @ count     : number of blocks to transfer.
     175 * @ returns 0 if success / returns EINVAL if error.
     176 *****************************************************************************************/
     177error_t dev_ioc_sync_read( uint8_t      * buffer,
     178                           uint32_t       lba,
     179                           uint32_t       count );
     180
    151181#endif  /* _DEV_IOC_H */

  • trunk/kernel/devices/dev_mmc.c

    r14 r23  
    4343    // get implementation from device descriptor
    4444    uint32_t  impl = chdev->impl;
     45
     46    // set chdev name
     47    snprintf( chdev->name , 16 , "mmc_%x" , local_cxy );
    4548
    4649    // set driver specific fields in device descriptor and call driver init function
    … …  
    6568
    6669/////////////////////////////////////////////////////////////////////////////
    67 // This static function makes some checking, takes the lock granting
    68 // exclusive access to MMC peripheral, call the driver to execute the command
     70// This static function is called by all MMC device functions.
     71// It makes some checking, takes the lock granting exclusive
     72// access to MMC peripheral, call the driver to execute the command
    6973// registered in the calling thread descriptor, and releases the lock.
    7074/////////////////////////////////////////////////////////////////////////////
    71 static void dev_mmc_access( thread_t * this )
    72 {
    73     mmc_dmsg("\n[INFO] %s enters for thread %x in process %x : command = %d\n",
    74                  __FUNCTION__ , this->trdid , this->process->pid , this->command.mmc.type );
    75 
    76     // get extended pointer on MMC device
    77     xptr_t  dev_xp  = this->command.mmc.dev_xp;
    78 
    79     assert( (dev_xp != XPTR_NULL) , __FUNCTION__ , "undefined MMC device descriptor" );
     75static error_t dev_mmc_access( thread_t * this )
     76{
     77    // get extended pointer on MMC device descriptor
     78    xptr_t  dev_xp = this->command.mmc.dev_xp;
     79
     80    assert( (dev_xp != XPTR_NULL) , __FUNCTION__ , "target MMC device undefined" );
    8081
    8182    // get MMC device cluster identifier & local pointer
    … …  
    9596    remote_spinlock_unlock( XPTR( dev_cxy , &dev_ptr->wait_lock ) ); 
    9697
    97     mmc_dmsg("\n[INFO] %s completes for thread %x in process %x / error = %d\n",
    98                  __FUNCTION__ , this->trdid , this->process->pid , this->dev.ioc.error );
     98    // return operation status
     99    return this->command.mmc.error; 
    99100
    100101}  // end dev_mmc_access()
    101102
    102 ////////////////////////////////////////////
    103 error_t dev_mmc_inval( paddr_t    buf_paddr,
     103/////////////////////////////////////////
     104error_t dev_mmc_inval( xptr_t     buf_xp,
    104105                       uint32_t   buf_size )
    105106{
    106     // get calling thread local pointer
    107     thread_t * this = CURRENT_THREAD;
    108 
    109     // get target cluster from paddr
    110     cxy_t cxy = CXY_FROM_PADDR( buf_paddr );
    111 
    112     assert( ((buf_paddr & (CONFIG_CACHE_LINE_SIZE -1)) == 0) , __FUNCTION__ ,
     107    error_t error;
     108
     109    // get calling thread local pointer
     110    thread_t * this = CURRENT_THREAD;
     111
     112    mmc_dmsg("\n[INFO] %s enters for thread %x in process %x / buf_xp = %l\n",
     113                 __FUNCTION__ , this->trdid , this->process->pid , buf_xp );
     114
     115    // get buffer cluster and local pointer
     116    cxy_t  buf_cxy = GET_CXY( buf_xp );
     117    void * buf_ptr = GET_PTR( buf_xp );
     118   
     119    assert( (((intptr_t)buf_ptr & (CONFIG_CACHE_LINE_SIZE -1)) == 0) , __FUNCTION__ ,
    113120             "buffer not aligned on cache line" );
    114121
    115     // get extended pointer on MMC device descriptor
    116     xptr_t  dev_xp = chdev_dir.mmc[cxy];
    117 
    118     // store command arguments in thread descriptor
    119     this->command.mmc.dev_xp    = dev_xp;
     122    // get buffer physical address
     123    paddr_t  buf_paddr;
     124    error = vmm_v2p_translate( CONFIG_KERNEL_IDENTITY_MAP , buf_ptr , &buf_paddr );
     125
     126    assert( (error == 0) , __FUNCTION__ , "cannot get buffer paddr" );
     127
     128    // store command arguments in thread descriptor
     129    this->command.mmc.dev_xp    = chdev_dir.mmc[buf_cxy];
    120130    this->command.mmc.type      = MMC_CC_INVAL;
    121131    this->command.mmc.buf_paddr = buf_paddr;
    122132    this->command.mmc.buf_size  = buf_size;
    123133
    124     // execute operation
    125     dev_mmc_access( this );
    126 
    127     // return operation status
    128     return this->command.mmc.error; 
    129 } 
    130 
    131 /////////////////////////////////////
    132 error_t dev_mmc_sync( paddr_t    buf_paddr,
     134    // call MMC driver
     135    error = dev_mmc_access( this );
     136
     137    mmc_dmsg("\n[INFO] %s completes for thread %x in process %x / error = %d\n",
     138             __FUNCTION__ , this->trdid , this->process->pid , error );
     139
     140    return error;
     141}
     142
     143////////////////////////////////////////
     144error_t dev_mmc_sync( xptr_t     buf_xp,
    133145                      uint32_t   buf_size )
    134146{
    135     // get calling thread local pointer
    136     thread_t * this = CURRENT_THREAD;
    137 
    138     // get target cluster from paddr
    139     cxy_t cxy = CXY_FROM_PADDR( buf_paddr );
    140 
    141     assert( ((buf_paddr & (CONFIG_CACHE_LINE_SIZE -1)) == 0) , __FUNCTION__ ,
     147    error_t error;
     148
     149    // get calling thread local pointer
     150    thread_t * this = CURRENT_THREAD;
     151
     152    mmc_dmsg("\n[INFO] %s enters for thread %x in process %x / buf_xp = %l\n",
     153                 __FUNCTION__ , this->trdid , this->process->pid , buf_xp );
     154
     155    // get buffer cluster and local pointer
     156    cxy_t  buf_cxy = GET_CXY( buf_xp );
     157    void * buf_ptr = GET_PTR( buf_xp );
     158   
     159    assert( (((intptr_t)buf_ptr & (CONFIG_CACHE_LINE_SIZE -1)) == 0) , __FUNCTION__ ,
    142160             "buffer not aligned on cache line" );
    143161
    144     // store command arguments in thread descriptor
    145     this->command.mmc.dev_xp    = chdev_dir.mmc[cxy];
     162    // get  buffer physical address
     163    paddr_t  buf_paddr;
     164    error = vmm_v2p_translate( CONFIG_KERNEL_IDENTITY_MAP , buf_ptr , &buf_paddr );
     165
     166    assert( (error == 0) , __FUNCTION__ , "cannot get buffer paddr" );
     167
     168    // store command arguments in thread descriptor
     169    this->command.mmc.dev_xp    = chdev_dir.mmc[buf_cxy];
    146170    this->command.mmc.type      = MMC_CC_SYNC;
    147171    this->command.mmc.buf_paddr = buf_paddr;
    148172    this->command.mmc.buf_size  = buf_size;
    149173
    150     // execute operation
    151     dev_mmc_access( this );
    152 
    153     // return operation status
    154     return this->command.mmc.error; 
    155 } 
     174    // call MMC driver
     175    error = dev_mmc_access( this );
     176
     177    mmc_dmsg("\n[INFO] %s completes for thread %x in process %x / error = %d\n",
     178                 __FUNCTION__ , this->trdid , this->process->pid , error );
     179
     180    return error;
     181}
    156182
    157183/////////////////////////////////////////
    … …  
    170196
    171197    // execute operation
    172     dev_mmc_access( this );
    173 
    174     // return operation status
    175     return this->command.mmc.error; 
     198    return dev_mmc_access( this );
    176199}
    177200                       
    … …  
    191214
    192215    // execute operation
    193     dev_mmc_access( this );
    194 
    195     // return operation status
    196     return this->command.mmc.error; 
     216    return dev_mmc_access( this );
    197217}
    198218                       
    … …  
    212232
    213233    // execute operation
    214     dev_mmc_access( this );
    215 
    216     // return operation status
    217     return this->command.mmc.error; 
    218 }
    219 
     234    return dev_mmc_access( this );
     235}
     236

  • trunk/kernel/devices/dev_mmc.h

    r14 r23  
    8181typedef struct mmc_command_s
    8282{
    83     xptr_t      dev_xp;     /*! extended pointer on the relevant MMC device descriptor  */
     83    xptr_t      dev_xp;     /*! extended pointer on target MMC device descriptor        */
    8484    uint32_t    type;       /*! CC_INVAL / CC_SYNC / GET_ERROR / SET_ERROR / GET_INSTRU */
    85     paddr_t     buf_paddr;  /*! buffer physical address          (used by INVAL/SYNC)   */
    86     uint32_t    buf_size;   /*! buffer size in bytes             (used by INVAL/SYNC)   */
    87     uint32_t    reg_index;  /*! register index in MMC peripheral (used by SET/GET)      */
    88     uint32_t  * reg_ptr;    /*! local pointer on src/dst buffer  (used by SET/GET)      */
     85    paddr_t     buf_paddr;  /*! physical address of memory buffer (used by INVAL/SYNC)  */
     86    uint32_t    buf_size;   /*! buffer size in bytes              (used by INVAL/SYNC)  */
     87    uint32_t    reg_index;  /*! register index in MMC peripheral  (used by SET/GET)     */
     88    uint32_t  * reg_ptr;    /*! local pointer on src/dst buffer   (used by SET/GET)     */
    8989    error_t     error;      /*! operation status (0 if success)                         */
    9090}
    … …  
    106106 * to access both the MMC device descriptor, and the L2 cache configuration interface.
    107107 *****************************************************************************************
    108  * @ buf_paddr  : buffer local physical addresse.
     108 * @ buf_xp     : extended pointer on memory buffer.
    109109 * @ buf_size   : buffer size (bytes).
    110110 * @ return 0 if success / return EINVAL if failure
    111111 ****************************************************************************************/
    112 error_t dev_mmc_inval( paddr_t   buf_paddr,
    113                        uint32_t  buf_size );
     112error_t dev_mmc_inval( xptr_t     buf_xp,
     113                       uint32_t   buf_size );
    114114
    115115/*****************************************************************************************
    … …  
    119119 * to access both the MMC device descriptor, and the L2 cache configuration interface.
    120120 *****************************************************************************************
    121  * @ buf_paddr  : buffer local physical addresse.
     121 * @ buf_xp     : extended pointer on memory buffer.
    122122 * @ buf_size   : buffer size (bytes).
    123123 * @ return 0 if success / return EINVAL if failure
    124124 ****************************************************************************************/
    125 error_t dev_mmc_sync( paddr_t    buf_paddr,
     125error_t dev_mmc_sync( xptr_t     buf_xp,
    126126                      uint32_t   buf_size );
    127127                       

  • trunk/kernel/devices/dev_nic.c

    r3 r23  
    5151    uint32_t  channel = chdev->channel;
    5252
     53    // set chdev name
     54    snprintf( chdev->name , 16 , "nic_%d" , chdev->channel );
     55
    5356    // set driver specific fields in chdev descriptor and call driver init function
    5457    if( impl == IMPL_NIC_SOC )

  • trunk/kernel/devices/dev_pic.c

    r3 r23  
    4949    uint32_t impl = chdev->impl;
    5050
     51    // set chdev name
     52    strcpy( chdev->name , "pic" );
     53 
    5154    // call the relevant driver init function
    5255    if( impl == IMPL_PIC_SOC )

  • trunk/kernel/devices/dev_txt.c

    r16 r23  
    5050    uint32_t  impl    = chdev->impl;
    5151    uint32_t  channel = chdev->channel;
     52
     53    // set chdev name
     54    snprintf( chdev->name , 16 , "txt_%d" , chdev->channel );
    5255
    5356    // set fields "cmd", "isr", and call driver init function
    … …  
    164167    xptr_t  dev_xp = chdev_dir.txt[channel];
    165168
     169    assert( (dev_xp != XPTR_NULL) , __FUNCTION__ , "undefined TXT0 chdev descriptor" );
     170
    166171    // register command in calling thread
    167172    this->command.txt.dev_xp  = dev_xp;

  • trunk/kernel/devices/dev_txt.h

    r14 r23  
    106106
    107107/******************************************************************************************
    108  * This blocking function writes a character string on the terminal identified
     108 * This blocking function writes  characters on the terminal identified
    109109 * by the "channel" argument. The corresponding request is actually registered in the
    110110 * chdev requests queue, and the calling thread is descheduled, blocked until
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