Changeset 647 for trunk/hal


Ignore:
Timestamp:
Oct 22, 2019, 1:48:51 PM (5 years ago)
Author:
alain
Message:

...miscelaneous...

Location:
trunk/hal
Files:
10 edited

Legend:

Unmodified
Added
Removed

  • trunk/hal/generic/hal_drivers.h

    r346 r647  
    2525#include <chdev.h>
    2626
    27 void hal_drivers_txt_init(chdev_t *txt, uint32_t impl);
     27void hal_drivers_txt_init( chdev_t * txt );
    2828
    29 void hal_drivers_pic_init(chdev_t *pic, uint32_t impl);
     29void hal_drivers_pic_init( chdev_t * pic );
    3030
    31 void hal_drivers_iob_init(chdev_t *iob, uint32_t impl);
     31void hal_drivers_iob_init( chdev_t * iob );
    3232
    33 void hal_drivers_ioc_init(chdev_t *ioc, uint32_t impl);
     33void hal_drivers_ioc_init( chdev_t * ioc );
    3434
    35 void hal_drivers_mmc_init(chdev_t *mmc, uint32_t impl);
     35void hal_drivers_mmc_init( chdev_t * mmc );
    3636
    37 void hal_drivers_nic_init(chdev_t *nic, uint32_t impl);
     37void hal_drivers_nic_init( chdev_t * nic );
    3838
    39 void hal_drivers_dma_init(chdev_t *dma, uint32_t impl);
     39void hal_drivers_dma_init( chdev_t * dma );
     40
     41void hal_drivers_fbf_init( chdev_t * fbf );
    4042
    4143#endif  /* HAL_DRIVERS_H_ */

  • trunk/hal/tsar_mips32/Makefile

    r570 r647  
    2424               $(HAL_ARCH)/build/drivers/soclib_dma.o  \
    2525               $(HAL_ARCH)/build/drivers/soclib_mmc.o  \
     26               $(HAL_ARCH)/build/drivers/soclib_fbf.o  \
    2627               $(HAL_ARCH)/build/drivers/soclib_iob.o
    2728

  • trunk/hal/tsar_mips32/core/hal_context.c

    r640 r647  
    221221
    222222    // get base and ppn of remote child process GPT PT1
    223     child_gpt_ptr = hal_remote_l32( XPTR(child_cxy , &child_process->vmm.gpt.ptr) );
     223    child_gpt_ptr = hal_remote_lpt( XPTR(child_cxy , &child_process->vmm.gpt.ptr) );
    224224    child_gpt_ppn = ppm_base2ppn( XPTR( child_cxy , child_gpt_ptr ) );   
    225225

  • trunk/hal/tsar_mips32/core/hal_drivers.c

    r570 r647  
    3434#include <soclib_nic.h>
    3535#include <soclib_dma.h>
     36#include <soclib_fbf.h>
    3637
    3738#include <dev_txt.h>
    … …  
    4647///////////////////////////////////////////////////////////////////////////////
    4748
    48 //////////////////////////////////////////
    49 void hal_drivers_txt_init( chdev_t  * txt,
    50                            uint32_t   impl )
     49///////////////////////////////////////////
     50void hal_drivers_txt_init( chdev_t  * txt )
    5151{
     52    uint32_t   impl = txt->impl;
     53
    5254    if( impl ==  IMPL_TXT_TTY )
    5355    {
    … …  
    6870///////////////////////////////////////////////////////////////////////////////
    6971
    70 //////////////////////////////////////////
    71 void hal_drivers_pic_init( chdev_t  * pic,
    72                            uint32_t   impl )
     72///////////////////////////////////////////
     73void hal_drivers_pic_init( chdev_t  * pic )
    7374{
     75    uint32_t   impl = pic->impl;
     76
    7477    assert( (impl == IMPL_PIC_SCL), "undefined implementation" );
    7578
    … …  
    9194///////////////////////////////////////////////////////////////////////////////
    9295
    93 //////////////////////////////////////////
    94 void hal_drivers_iob_init( chdev_t  * iob,
    95                            uint32_t   impl )
     96///////////////////////////////////////////
     97void hal_drivers_iob_init( chdev_t  * iob )
    9698{
     99    uint32_t   impl = iob->impl;
     100
    97101        assert( (impl == IMPL_IOB_TSR), "undefined implementation" );
    98102
    … …  
    112116///////////////////////////////////////////////////////////////////////////////
    113117
    114 //////////////////////////////////////////
    115 void hal_drivers_ioc_init( chdev_t  * ioc,
    116                            uint32_t   impl )
     118///////////////////////////////////////////
     119void hal_drivers_ioc_init( chdev_t  * ioc )
    117120{
     121    uint32_t   impl = ioc->impl;
     122
    118123        if (impl == IMPL_IOC_BDV)
    119124    {
    … …  
    138143///////////////////////////////////////////////////////////////////////////////
    139144
    140 //////////////////////////////////////////
    141 void hal_drivers_mmc_init( chdev_t  * mmc,
    142                            uint32_t   impl )
     145///////////////////////////////////////////
     146void hal_drivers_mmc_init( chdev_t  * mmc )
    143147{
     148    uint32_t   impl = mmc->impl;
     149
    144150        assert( (impl == IMPL_MMC_TSR), "undefined implementation" );
    145151 
    … …  
    151157///////////////////////////////////////////////////////////////////////////////
    152158
    153 //////////////////////////////////////////
    154 void hal_drivers_nic_init( chdev_t  * nic,
    155                            uint32_t   impl )
     159///////////////////////////////////////////
     160void hal_drivers_nic_init( chdev_t  * nic )
    156161{
     162    uint32_t   impl = nic->impl;
     163
    157164        assert( (impl == IMPL_NIC_CBF), "undefined implementation" );
    158165 
    … …  
    164171///////////////////////////////////////////////////////////////////////////////
    165172
    166 //////////////////////////////////////////
    167 void hal_drivers_dma_init( chdev_t  * dma,
    168                            uint32_t   impl )
     173///////////////////////////////////////////
     174void hal_drivers_dma_init( chdev_t  * dma )
    169175{
     176    uint32_t   impl = dma->impl;
     177
    170178        assert( (impl == IMPL_DMA_SCL), "undefined implementation" );
    171179 
    … …  
    173181}
    174182
     183///////////////////////////////////////////////////////////////////////////////
     184//    FBF
     185///////////////////////////////////////////////////////////////////////////////
     186
     187///////////////////////////////////////////
     188void hal_drivers_fbf_init( chdev_t  * fbf )
     189{
     190    uint32_t   impl = fbf->impl;
     191
     192        assert( (impl == IMPL_FBF_SCL), "undefined implementation" );
     193 
     194    soclib_fbf_init( fbf );
     195}
     196

  • trunk/hal/tsar_mips32/core/hal_gpt.c

    r640 r647  
    2424#include <hal_kernel_types.h>
    2525#include <hal_gpt.h>
     26#include <hal_vmm.h>
    2627#include <hal_special.h>
    2728#include <hal_irqmask.h>
    … …  
    291292uint32_t   cycle = (uint32_t)hal_get_cycles();
    292293// if( DEBUG_HAL_GPT_LOCK_PTE < cycle )
    293 if( (vpn == 0x3600) && (gpt_cxy == 0x11) )
     294if( (vpn == 0xc1fff) && (gpt_cxy == 0x1) )
    294295printk("\n[%s] thread[%x,%x] enters / vpn %x in cluster %x / cycle %d\n",
    295296__FUNCTION__, this->process->pid, this->trdid, vpn, gpt_cxy, cycle );
    … …  
    360361#if DEBUG_HAL_GPT_LOCK_PTE
    361362// if( DEBUG_HAL_GPT_LOCK_PTE < cycle )
    362 if( (vpn == 0x3600) && (gpt_cxy == 0x11) )
     363if( (vpn == 0xc1fff) && (gpt_cxy == 0x1) )
    363364printk("\n[%s] PTE1 unmapped : winner thread[%x,%x] allocates a PT2 for vpn %x in cluster %x\n",
    364365__FUNCTION__, this->process->pid, this->trdid, vpn, gpt_cxy );
    … …  
    371372#if DEBUG_HAL_GPT_LOCK_PTE
    372373// if( DEBUG_HAL_GPT_LOCK_PTE < cycle )
    373 if( (vpn == 0x3600) && (gpt_cxy == 0x11) )
     374if( (vpn == 0xc1fff) && (gpt_cxy == 0x1) )
    374375printk("\n[%s] PTE1 unmapped : loser thread[%x,%x] wait PTE1 for vpn %x in cluster %x\n",
    375376__FUNCTION__, this->process->pid, this->trdid, vpn, gpt_cxy );
    … …  
    412413#if DEBUG_HAL_GPT_LOCK_PTE
    413414// if( DEBUG_HAL_GPT_LOCK_PTE < cycle )
    414 if( (vpn == 0x3600) && (gpt_cxy == 0x11) )
     415if( (vpn == 0xc1fff) && (gpt_cxy == 0x1) )
    415416printk("\n[%s] PTE1 unmapped : loser thread[%x,%x] get PTE1 for vpn %x in cluster %x\n",
    416417__FUNCTION__, this->process->pid, this->trdid, vpn, gpt_cxy );
    … …  
    426427#if DEBUG_HAL_GPT_LOCK_PTE
    427428// if( DEBUG_HAL_GPT_LOCK_PTE < cycle )
    428 if( (vpn == 0x3600) && (gpt_cxy == 0x11) )
     429if( (vpn == 0xc1fff) && (gpt_cxy == 0x1) )
    429430printk("\n[%s] thread[%x,%x] get pte1 %x for vpn %x in cluster %x\n",
    430431__FUNCTION__, this->process->pid, this->trdid, pte1, vpn, gpt_cxy );
    … …  
    494495cycle = (uint32_t)hal_get_cycles();
    495496// if( DEBUG_HAL_GPT_LOCK_PTE < cycle )
    496 if( (vpn == 0x3600) && (gpt_cxy == 0x11) )
     497if( (vpn == 0xc1fff) && (gpt_cxy == 0x1) )
    497498printk("\n[%s] thread[%x,%x] success / vpn %x in cluster %x / attr %x / ppn %x / cycle %d\n",
    498499__FUNCTION__, this->process->pid, this->trdid, vpn, gpt_cxy, pte2_attr, pte2_ppn, cycle );

  • trunk/hal/tsar_mips32/core/hal_remote.c

    r625 r647  
    220220        "mtc2   %4,     $24          \n"  /* PADDR_EXT <= cxy   */   
    221221        "or     $8,     $0,    %3    \n"  /* $8 <= new          */
    222         "ll     $3,    0(%1)         \n"  /* $3 <= *paddr       */
     222        "ll     $3,    0(%1)         \n"  /* $3 <= *ptr         */
    223223        "bne    $3,     %2,    1f    \n"  /* if ($3 != old)     */
    224224        "li     $7,     0            \n"  /* $7 <= 0            */
    225         "sc     $8,     (%1)         \n"  /* *paddr <= new      */
     225        "sc     $8,     (%1)         \n"  /* *ptr <= new        */
    226226        "or     $7,     $8,    $0    \n"  /* $7 <= atomic       */
    227227        "sync                        \n"

  • trunk/hal/tsar_mips32/core/hal_uspace.c

    r637 r647  
    142142// If the two buffers are aligned on a word boundary, it moves the data word per word
    143143// in a first loop, and moves byte per byte the remaining bytes in a second loop.
    144 // If the buffers are not aligned, it moves all data byte per byte.
     144// If the buffers are not word aligned, it moves all data byte per byte.
    145145///////////////////////////////////////////////////////////////////////////////////////
    146146// @ u_dst_ptr : pointer on destination user buffer

  • trunk/hal/tsar_mips32/drivers/soclib_bdv.c

    r626 r647  
    3333void soclib_bdv_init( chdev_t * chdev )
    3434{
    35     // get extended pointer on SOCLIB_BDV peripheral base
    36         xptr_t  bdv_xp = chdev->base;
    37 
    38     // set driver specific fields
     35    // set driver specific fields in IOC chdev
    3936    chdev->cmd = &soclib_bdv_cmd;
    4037    chdev->isr = &soclib_bdv_isr;
    4138
     39    // get extended pointer on SOCLIB_BDV peripheral base
     40        xptr_t  base_xp = chdev->base;
     41
    4242    // get hardware device cluster and local pointer
    43     cxy_t      bdv_cxy  = GET_CXY( bdv_xp );
    44     uint32_t * bdv_ptr  = (uint32_t *)GET_PTR( bdv_xp );
     43    cxy_t      base_cxy  = GET_CXY( base_xp );
     44    uint32_t * base_ptr  = GET_PTR( base_xp );
    4545
    4646    // get block_size and block_count 
    47         uint32_t block_size = hal_remote_l32( XPTR( bdv_cxy , bdv_ptr + BDV_BLOCK_SIZE_REG ) );
    48         uint32_t block_count = hal_remote_l32( XPTR( bdv_cxy , bdv_ptr + BDV_SIZE_REG ) );
    49 
    50     // set IOC device descriptor extension
     47        uint32_t block_size  = hal_remote_l32( XPTR( base_cxy , base_ptr + BDV_BLOCK_SIZE_REG ) );
     48        uint32_t block_count = hal_remote_l32( XPTR( base_cxy , base_ptr + BDV_SIZE_REG ) );
     49
     50    // set IOC chdev extension fields
    5151    chdev->ext.ioc.size  = block_size;
    5252    chdev->ext.ioc.count = block_count;
    … …  
    9191    else     assert( false , "illegal command" );
    9292
    93     // get IOC device cluster and local pointer
     93    // get cluster and local pointer on IOC chdev
    9494    cxy_t      ioc_cxy = GET_CXY( ioc_xp );
    9595    chdev_t  * ioc_ptr = GET_PTR( ioc_xp );
    … …  
    131131    // waiting policy  depends on the command type
    132132    // - for IOC_READ / IOC_WRITE commands, this function is called by the server thread
    133     //   that blocks and deschedules after launching the I/O transfer.
    134     //   The I/O operation status is reported in the command by the ISR.
    135     // - for IOC_SYNC_READ / IOC_SYNC_WRITE command, this function is called by the client
    136     //   thread that polls the BDV status register until I/O transfer completion.
     133    //   => block and deschedule after launching the I/O transfer.
     134    //   The I/O operation status is reported in the command by the ISR, and the
     135    //   server thread is re-activated by the ISR.
     136    // - for IOC_SYNC_READ / IOC_SYNC_WRITE, this function is called by the client thread
     137    //   => mask the IOC IRQ and poll the BDV status register until I/O transfer completion,
     138    //   and report status in the command.
    137139
    138140    if( (cmd_type == IOC_SYNC_READ) || (cmd_type == IOC_SYNC_WRITE) )  // polling policy
    139141    {
     142        // get core handling the IOC IRQ
     143        thread_t * server = (thread_t *)hal_remote_lpt( XPTR( ioc_cxy , &ioc_ptr->server ) );
     144        core_t   * core   = (core_t *)hal_remote_lpt( XPTR( ioc_cxy , &server->core ) );
     145        lid_t      lid    = (lid_t)hal_remote_l32( XPTR( ioc_cxy , &core->lid ) );
     146
     147        // mask the IOC IRQ
     148        dev_pic_disable_irq( lid , ioc_xp );
     149
    140150        // launch I/O operation on BDV device
    141151        hal_remote_s32( XPTR( seg_cxy , seg_ptr + BDV_OP_REG ) , op );
    … …  
    149159                (status == BDV_WRITE_SUCCESS) ) // successfully completed
    150160            {
     161                // unmask IOC IRQ
     162                dev_pic_enable_irq( lid , ioc_xp );
     163
     164                // report success in command
    151165                hal_remote_s32( XPTR( th_cxy , &th_ptr->ioc_cmd.error ) , 0 );
    152166
    … …  
    154168cycle = (uint32_t)hal_get_cycles();
    155169if( (DEBUG_HAL_IOC_RX < cycle) && (cmd_type == IOC_SYNC_READ) )
    156 printk("\n[%s] thread[%x,%x] exit after SYNC_READ for client thread[%x,%x] / cycle %d\n",
     170printk("\n[%s] thread[%x,%x] SYNC_READ success for client thread[%x,%x] / cycle %d\n",
    157171__FUNCTION__, this->process->pid, this->trdid, client_pid, client_trdid, cycle );
    158172#endif
    … …  
    161175cycle = (uint32_t)hal_get_cycles();
    162176if( (DEBUG_HAL_IOC_TX < cycle) && (cmd_type == IOC_SYNC_WRITE) )
    163 printk("\n[%s] thread[%x,%x] exit after SYNC_WRITE for client thread[%x,%x] / cycle %d\n",
     177printk("\n[%s] thread[%x,%x] SYNC_WRITE success for client thread[%x,%x] / cycle %d\n",
    164178__FUNCTION__, this->process->pid, this->trdid, client_pid, client_trdid, cycle );
    165179#endif
    … …  
    172186            else                               // error reported
    173187            {
     188                // unmask IOC IRQ
     189                dev_pic_enable_irq( lid , ioc_xp );
     190
     191                // report failure in command
    174192                hal_remote_s32( XPTR( th_cxy , &th_ptr->ioc_cmd.error ) , 1 );
     193
     194#if DEBUG_HAL_IOC_RX
     195cycle = (uint32_t)hal_get_cycles();
     196if( (DEBUG_HAL_IOC_RX < cycle) && (cmd_type == IOC_SYNC_READ) )
     197printk("\n[%s] thread[%x,%x] SYNC_READ failure for client thread[%x,%x] / cycle %d\n",
     198__FUNCTION__, this->process->pid, this->trdid, client_pid, client_trdid, cycle );
     199#endif
     200
     201#if DEBUG_HAL_IOC_TX
     202cycle = (uint32_t)hal_get_cycles();
     203if( (DEBUG_HAL_IOC_TX < cycle) && (cmd_type == IOC_SYNC_WRITE) )
     204printk("\n[%s] thread[%x,%x] SYNC_WRITE failure for client thread[%x,%x] / cycle %d\n",
     205__FUNCTION__, this->process->pid, this->trdid, client_pid, client_trdid, cycle );
     206#endif
    175207                break;
    176208            }

  • trunk/hal/tsar_mips32/drivers/soclib_fbf.c

    r75 r647  
    22 * soclib_fbf.c - soclib frame-buffer driver implementation.
    33 *
    4  * Author Alain greiner (2016)
     4 * Author Alain greiner (2016,2017,2018,2019)
    55 *
    66 * Copyright (c) UPMC Sorbonne Universites
    … …  
    2222 */
    2323
     24#include <soclib_fbf.h>
     25#include <hal_kernel_types.h>
     26#include <hal_uspace.h>
     27#include <chdev.h>
     28#include <dev_fbf.h>
     29#include <printk.h>
     30#include <thread.h>
     31
     32///////////////////////////////////////
     33void soclib_fbf_init( chdev_t * chdev )
     34{
     35    // set driver specific fields in FBF chdev
     36    chdev->cmd = &soclib_fbf_cmd;
     37    chdev->isr = NULL;
     38
     39    // get extended pointer on SOCLIB_FBF peripheral segment base
     40        xptr_t  base_xp = chdev->base;
     41
     42    // get cluster and local pointer for the SOCLIB_FBF peripheral segment
     43    cxy_t      base_cxy  = GET_CXY( base_xp );
     44    uint32_t * base_ptr  = GET_PTR( base_xp );
     45
     46    // get frame buffer width, height, and type 
     47        uint32_t width  = hal_remote_l32( XPTR( base_cxy , base_ptr + FBF_WIDTH_REG ) );
     48        uint32_t height = hal_remote_l32( XPTR( base_cxy , base_ptr + FBF_HEIGHT_REG ) );
     49    uint32_t type   = hal_remote_l32( XPTR( base_cxy , base_ptr + FBF_SUBSAMPLING_REG ) );
     50
     51    // set FBF chdev extension fields
     52    chdev->ext.fbf.width       = width;
     53    chdev->ext.fbf.height      = height;
     54    chdev->ext.fbf.subsampling = type;
     55
     56}  // end soclib_fbf_init()
     57
     58/////////////////////////////////////////////////////////////////
     59void __attribute__((noinline)) soclib_fbf_cmd( xptr_t thread_xp )
     60{
     61    uint32_t   cmd_type;    // READ / WRITE / SYNC_READ / SYNC_WRITE
     62    uint32_t   offset;
     63    uint32_t   length;
     64    void     * buffer;      // pointer on memory buffer in user space
     65    xptr_t     fbf_xp;
     66    uint32_t   status;      // I/0 operation status (from BDV)
     67
     68    // get client thread cluster and local pointer
     69    cxy_t      th_cxy = GET_CXY( thread_xp );
     70    thread_t * th_ptr = GET_PTR( thread_xp );
     71
     72#if (DEBUG_HAL_FBF|| DEBUG_HAL_FBF)
     73uint32_t    cycle        = (uint32_t)hal_get_cycles();
     74thread_t  * this         = CURRENT_THREAD;
     75process_t * process      = hal_remote_lpt( XPTR( th_cxy , &th_ptr->process ) );
     76pid_t       client_pid   = hal_remote_l32( XPTR( th_cxy , &process->pid ) );
     77trdid_t     client_trdid = hal_remote_l32( XPTR( th_cxy , &th_ptr->trdid ) );
     78#endif
     79
     80    // get command arguments
     81    cmd_type =         hal_remote_l32( XPTR( th_cxy , &th_ptr->fbf_cmd.type   ) );
     82    offset   =         hal_remote_l32( XPTR( th_cxy , &th_ptr->fbf_cmd.offset ) );
     83    length   =         hal_remote_l32( XPTR( th_cxy , &th_ptr->fbf_cmd.length ) );
     84    buffer   =         hal_remote_lpt( XPTR( th_cxy , &th_ptr->fbf_cmd.buffer ) );
     85    fbf_xp   = (xptr_t)hal_remote_l64( XPTR( th_cxy , &th_ptr->fbf_cmd.dev_xp ) );
     86
     87    // get cluster and local pointer on FBF chdev
     88    cxy_t     fbf_cxy = GET_CXY( fbf_xp );
     89    chdev_t * fbf_ptr = GET_PTR( fbf_xp );
     90
     91    // get extended pointer on SOCLIB_FBF peripheral segment base
     92        xptr_t  base_xp = (xptr_t)hal_remote_l64( XPTR( fbf_cxy , &fbf_ptr->base ) );
     93
     94    // execute command
     95    if( cmd_type == FBF_READ )     // use a (kernel -> user) memcpy
     96    {
     97
     98#if DEBUG_HAL_FBF
     99if( DEBUG_HAL_FBF < cycle )
     100printk("\n[%s] thread[%x,%x] / client[%x,%x] / READ / offset / length / buffer %x / cycle %d\n",
     101__FUNCTION__ , this->process->pid, this->trdid,  client_pid, client_trdid,
     102offset, length, buffer, cycle );
     103#endif
     104        hal_copy_to_uspace( buffer,
     105                            base_xp + offset,
     106                            length );
     107
     108    }
     109    else  // cmd_type == FBF_WRITE => use a (user -> kernel)  memcpy
     110    {
     111
     112#if DEBUG_HAL_FBF
     113if( DEBUG_HAL_FBF < cycle )
     114printk("\n[%s] thread[%x,%x] / client[%x,%x] / WRITE / offset / length / buffer %x / cycle %d\n",
     115__FUNCTION__ , this->process->pid, this->trdid, client_pid, client_trdid,
     116offset, length, buffer, cycle );
     117#endif
     118        hal_copy_from_uspace( base_xp + offset,
     119                              buffer,
     120                              length );
     121    }
     122
     123    // set success in command
     124    hal_remote_s32( XPTR( th_cxy , &th_ptr->fbf_cmd.error ) , 0 );
     125           
     126}  // end soclib_fbf_cmd()
     127

  • trunk/hal/tsar_mips32/drivers/soclib_fbf.h

    r75 r647  
    11/*
    2  * soclib_fbf.h - soclib frame-buffer driver definition.
     2 * soclib_fbf.h - soclib frame-buffer driver definition (used in TSAR_IOB architecture).
    33 *
    4  * Author Alain greiner (2016)
     4 * Author Alain greiner (2016,2017,2018,2019)
    55 *
    66 * Copyright (c) UPMC Sorbonne Universites
    … …  
    2222 */
    2323
    24 #ifndef _SOCLIB_FB_H_
    25 #define _SOCLIB_FB_H_
     24#ifndef _SOCLIB_FBF_H_
     25#define _SOCLIB_FBF_H_
    2626
     27#include <chdev.h>
     28#include <hal_kernel_types.h>
     29
     30/****************************************************************************************
     31 * This driver supports the vci_fbf_tsar component.
     32 *
     33 * This hardware component supports both a frame buffer, and a set of addressable
     34 * configuration status registers.
     35 ***************************************************************************************/
     36
     37/****************************************************************************************
     38 *                    SOCLIB_FBF registers offsets
     39 * The three addressables registers are on top  of the 4 Mbytes allocated
     40 * to the frame buffer itself.
     41 ***************************************************************************************/
     42
     43enum SoclibFrameBufferRegisters
     44{
     45    FBF_WIDTH_REG        = 0x100000,
     46    FBF_HEIGHT_REG       = 0x100001,
     47    FBF_SUBSAMPLING_REG  = 0x100002,
     48};
     49
     50/****************************************************************************************
     51 * This function access the SOCLIB_FBF hardware registers, to get the frame buffer
     52 * size and type, and update the FBF device extension.
     53 ****************************************************************************************
     54 * @ chdev     : pointer on the FBF chdev descriptor.
     55 ***************************************************************************************/
     56void soclib_fbf_init( chdev_t * chdev );
     57
     58/****************************************************************************************
     59 * This function implements the FBF_READ and FBF_WRITE commands registered in the client
     60 * thread descriptor identified by the <thread_xp> argument.
     61 * It is called directly by the client thread.
     62 * **************************************************************************************
     63 * @ thread_xp : extended pointer on client thread descriptor.
     64 ***************************************************************************************/
     65extern void soclib_fbf_cmd( xptr_t thread_xp );
    2766
    2867#endif
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