Changeset 76 for trunk/hal/x86_64/drivers/soclib_bdv.c

Timestamp:

Jun 27, 2017, 2:07:55 PM (6 years ago)

Author:

max@…

Message:

empty out the x86 drivers

File:

• trunk/hal/x86_64/drivers/soclib_bdv.c (modified) (1 diff)

trunk/hal/x86_64/drivers/soclib_bdv.c

@@ -28 +28 @@
 #include <spinlock.h>
 
-
-///////////////////////////////////////
 void soclib_bdv_init( chdev_t * chdev )
 {
-    // get extended pointer on SOCLIB_BDV peripheral base address
-        xptr_t  bdv_xp = chdev->base;
 
-    // get hardware device cluster and local pointer
-    cxy_t      bdv_cxy  = GET_CXY( bdv_xp );
-    uint32_t * bdv_ptr  = (uint32_t *)GET_PTR( bdv_xp );
+}
 
-    // get block_size and block_count  
-        uint32_t block_size = hal_remote_lw( XPTR( bdv_cxy , bdv_ptr + BDV_BLOCK_SIZE_REG ) );
-        uint32_t block_count = hal_remote_lw( XPTR( bdv_cxy , bdv_ptr + BDV_SIZE_REG ) );
-
-    // set IOC device descriptor extension
-    chdev->ext.ioc.size  = block_size;
-    chdev->ext.ioc.count = block_count;
-
-} // end soclib_bdv_init()
-
-
-//////////////////////////////////////////////////////////////
 void __attribute__ ((noinline)) soclib_bdv_cmd( xptr_t th_xp )
 {
-    uint32_t   cmd_type;     // IOC_READ / IOC_WRITE / IOC_SYNC_READ
-    uint32_t   lba;          // command argument
-    uint32_t   count;        // command argument
-    xptr_t     buf_xp;       // command argument
-    xptr_t     dev_xp;       // command argument
 
-    // get client thread cluster and local pointer
-    cxy_t      th_cxy = GET_CXY( th_xp );
-    thread_t * th_ptr = (thread_t *)GET_PTR( th_xp );
+}
 
-    // get command arguments and extended pointer on IOC device
-    cmd_type =         hal_remote_lw ( XPTR( th_cxy , &th_ptr->command.ioc.type   ) );
-    lba      =         hal_remote_lw ( XPTR( th_cxy , &th_ptr->command.ioc.lba    ) );
-    count    =         hal_remote_lw ( XPTR( th_cxy , &th_ptr->command.ioc.count  ) );
-    buf_xp   = (xptr_t)hal_remote_lwd( XPTR( th_cxy , &th_ptr->command.ioc.buf_xp ) );
-    dev_xp   = (xptr_t)hal_remote_lwd( XPTR( th_cxy , &th_ptr->command.ioc.dev_xp ) );
-
-    // get IOC device cluster and local pointer
-    cxy_t      dev_cxy = GET_CXY( dev_xp );
-    chdev_t  * dev_ptr = (chdev_t *)GET_PTR( dev_xp );
-
-    // get extended pointer on SOCLIB-BDV peripheral
-    xptr_t     bdv_xp = hal_remote_lw( XPTR( dev_cxy , &dev_ptr->base ) );
-
-    // get SOCLIB_BDV device cluster and local pointer
-    cxy_t      bdv_cxy = GET_CXY( bdv_xp );
-    uint32_t * bdv_ptr = (uint32_t *)GET_PTR( bdv_xp );
-
-    // split buffer address in two 32 bits words
-    uint32_t   buf_lsb = (uint32_t)(buf_xp);
-    uint32_t   buf_msb = (uint32_t)(buf_xp>>32);
-
-    // set operation
-    uint32_t   op;
-    if( cmd_type == IOC_WRITE ) op = BDV_OP_WRITE; 
-    else                        op = BDV_OP_READ;
-
-    // set SOCLIB_BDV registers to start one I/O operation
-    hal_remote_sw( XPTR( bdv_cxy , bdv_ptr + BDV_IRQ_ENABLE_REG ) , 1       );
-    hal_remote_sw( XPTR( bdv_cxy , bdv_ptr + BDV_BUFFER_REG     ) , buf_lsb ); 
-    hal_remote_sw( XPTR( bdv_cxy , bdv_ptr + BDV_BUFFER_EXT_REG ) , buf_msb ); 
-    hal_remote_sw( XPTR( bdv_cxy , bdv_ptr + BDV_LBA_REG        ) , lba     );
-    hal_remote_sw( XPTR( bdv_cxy , bdv_ptr + BDV_COUNT_REG      ) , count   );
-    hal_remote_sw( XPTR( bdv_cxy , bdv_ptr + BDV_OP_REG         ) , op      );
-
-    // waiting policy  depends on the command type
-
-    if( cmd_type == IOC_SYNC_READ )                  // polling policy
-    {
-        uint32_t status;
-        while (1)
-        {
-            status = hal_remote_lw( XPTR( bdv_cxy , bdv_ptr + BDV_STATUS_REG ) );
-
-            if( status == BDV_READ_SUCCESS ) // successfully completed
-            {
-                hal_remote_sw( XPTR( th_cxy , &th_ptr->command.ioc.error ) , 0 );
-                break;
-            }
-            else if( status == BDV_BUSY )   // non completed
-            {
-                continue;
-            }
-            else                            // error reported
-            {
-                hal_remote_sw( XPTR( th_cxy , &th_ptr->command.ioc.error ) , 1 );
-                break;
-            }
-        }
-    }
-    else                                            // descheduling + IRQ policy
-    { 
-        thread_block( CURRENT_THREAD , THREAD_BLOCKED_DEV_ISR );
-        sched_yield();
-    }
-    
-} // end soclib_bdv_cmd()
-
-
-/////////////////////////////////////////////////////////////////
 void __attribute__ ((noinline)) soclib_bdv_isr( chdev_t * chdev )
 {
-    // get extended pointer on client thread
-    xptr_t root = XPTR( local_cxy , &chdev->wait_root );
-    xptr_t client_xp = XLIST_FIRST_ELEMENT( root , thread_t , wait_list );
 
-    // get extended pointer on server thread
-    xptr_t server_xp = XPTR( local_cxy , &chdev->server );
+}
 
-    // get client thread cluster and local pointer
-    cxy_t      client_cxy = GET_CXY( client_xp );
-    thread_t * client_ptr = (thread_t *)GET_PTR( client_xp );
-
-    // get SOCLIB_BDV device cluster and local pointer
-    cxy_t      bdv_cxy  = GET_CXY( chdev->base );
-    uint32_t * bdv_ptr  = (uint32_t *)GET_PTR( chdev->base );
-
-    // get BDV status register and acknowledge IRQ
-        uint32_t status = hal_remote_lw( XPTR( bdv_cxy , bdv_ptr + BDV_STATUS_REG ) );   
-
-    // set operation status in command
-        if((status != BDV_READ_SUCCESS) && (status != BDV_WRITE_SUCCESS)) 
-    {
-        hal_remote_sw( XPTR( client_cxy , &client_ptr->command.ioc.error ) , 1 );
-    }
-        else
-    {
-        hal_remote_sw( XPTR( client_cxy , &client_ptr->command.ioc.error ) , 0 );
-    }
-
-    // unblock server thread 
-    thread_unblock( server_xp , THREAD_BLOCKED_DEV_ISR );
-
-    // unblock client thread
-    thread_unblock( client_xp , THREAD_BLOCKED_IO );
-
-} // end soclib_bdv_isr()
-
-
-