/////////////////////////////////////////////////////////////////////////////// // File : sys_handler.h // Date : 01/04/2012 // Author : alain greiner // Copyright (c) UPMC-LIP6 /////////////////////////////////////////////////////////////////////////////// // The sys_handler.c and sys_handler.h files are part of the GIET-VM kernel. // It define the syscall_vector[] (at the end of this file), as well as the // associated syscall handlers. /////////////////////////////////////////////////////////////////////////////// #ifndef _SYS_HANDLER_H #define _SYS_HANDLER_H #include "giet_config.h" #include "kernel_locks.h" #include "stdio.h" /////////////////////////////////////////////////////////////////////////////// // Syscall Vector Table (indexed by syscall index) /////////////////////////////////////////////////////////////////////////////// extern const void * _syscall_vector[64]; /////////////////////////////////////////////////////////////////////////////// // This structure is used by the nic_chbuf_t and fbf_chbuf_t structures. // It describes a single buffer descriptor. The useful information is // contained in one single 64 bits word (desc field): // - the 48 LSB bits contain the buffer physical address // - the MSB bit 63 indicates the buffer state (empty if 0) // This descriptor must be aligned on a cache line (64 bytes) to simplify // the software L2/L3 cache coherence when the IO bridge is used. /////////////////////////////////////////////////////////////////////////////// typedef struct buffer_descriptor_s { unsigned long long desc; unsigned int padding[14]; } buffer_descriptor_t; /////////////////////////////////////////////////////////////////////////////// // This structure is used by the CMA component to move a stream // of images from two user buffers to the frame buffer in kernel space. // It contains two chbuf arrays: // - The SRC chbuf contains two buffers (buf0 & buf1), in user space. // - The DST cbuf contains one single buffer (fbf), that is the frame buffer. // - The length field define the buffer size (bytes) // This structure must be 64 bytes aligned. /////////////////////////////////////////////////////////////////////////////// typedef struct fbf_chbuf_s { buffer_descriptor_t buf0; // first user buffer descriptor buffer_descriptor_t buf1; // second user buffer descriptor buffer_descriptor_t fbf; // frame buffer descriptor unsigned int length; // buffer length (bytes) unsigned int padding[15]; // padding for 64 bytes alignment } fbf_chbuf_t; /////////////////////////////////////////////////////////////////////////////// // This structure is used by the CMA component to move a stream of containers // between the NIC chbuf containing 2 buffers, and a kernel chbuf // containing up to (X_SIZE * Y_SIZE) buffers (one buffer per cluster). // The same structure is used for both TX or RX transfers. // The number of distributed containers can be smaller than (X_SIZE * YSIZE). // The actual number of buffers used in the chbuf is defined by (xmax * ymax). // This structure must be 64 bytes aligned. /////////////////////////////////////////////////////////////////////////////// typedef struct nic_chbuf_s { buffer_descriptor_t buffer[X_SIZE*Y_SIZE]; // kernel chbuf unsigned int xmax; // nb clusters in a row unsigned int ymax; // nb clusters in a column } nic_chbuf_t; /////////////////////////////////////////////////////////////////////////////// // Coprocessors related syscall handlers /////////////////////////////////////////////////////////////////////////////// int _sys_coproc_alloc( unsigned int coproc_type, unsigned int* coproc_info, unsigned int* cluster_xy ); int _sys_coproc_release( unsigned int cluster_xy ); int _sys_coproc_channel_init( unsigned int cluster_xy, unsigned int channel, giet_coproc_channel_t* desc ); int _sys_coproc_channel_start( unsigned int cluster_xy, unsigned int channel ); int _sys_coproc_channel_stop( unsigned int cluster_xy, unsigned int channel ); int _sys_coproc_completed( unsigned int cluster_xy ); /////////////////////////////////////////////////////////////////////////////// // TTY related syscall handlers /////////////////////////////////////////////////////////////////////////////// int _sys_tty_alloc(); int _sys_tty_write( const char* buffer, unsigned int length, unsigned int channel ); int _sys_tty_read( char* buffer, unsigned int length, unsigned int channel ); int _sys_tty_get_lock( unsigned int channel, unsigned int * save_sr_ptr ); int _sys_tty_release_lock( unsigned int channel, unsigned int * save_sr_ptr ); int _sys_coproc_register_set( unsigned int cluster_xy, unsigned int reg_index, unsigned int value ); int _sys_coproc_register_get( unsigned int cluster_xy, unsigned int reg_index, unsigned int* buffer ); ////////////////////////////////////////////////////////////////////////////// // TIM related syscall handlers ////////////////////////////////////////////////////////////////////////////// int _sys_tim_alloc(); int _sys_tim_start( unsigned int period ); int _sys_tim_stop(); ////////////////////////////////////////////////////////////////////////////// // NIC related syscall handlers ////////////////////////////////////////////////////////////////////////////// int _sys_nic_alloc( unsigned int is_rx, unsigned int xmax, unsigned int ymax ); int _sys_nic_start( unsigned int is_rx, unsigned int channel ); int _sys_nic_move( unsigned int is_rx, unsigned int channel, void* buffer ); int _sys_nic_stop( unsigned int is_rx, unsigned int channel ); int _sys_nic_clear( unsigned int is_rx, unsigned int channel ); int _sys_nic_stats( unsigned int is_rx, unsigned int channel ); ////////////////////////////////////////////////////////////////////////////// // FBF related syscall handlers ////////////////////////////////////////////////////////////////////////////// int _sys_fbf_sync_write( unsigned int offset, void* buffer, unsigned int length ); int _sys_fbf_sync_read( unsigned int offset, void* buffer, unsigned int length ); int _sys_fbf_cma_alloc(); int _sys_fbf_cma_start( void* vbase0, void* vbase1, unsigned int length ); int _sys_fbf_cma_display( unsigned int buffer_index ); int _sys_fbf_cma_stop(); ////////////////////////////////////////////////////////////////////////////// // Miscelaneous syscall handlers ////////////////////////////////////////////////////////////////////////////// int _sys_ukn(); int _sys_proc_xyp( unsigned int* x, unsigned int* y, unsigned int* p ); int _sys_task_exit( char* string ); int _sys_context_switch(); int _sys_local_task_id(); int _sys_global_task_id(); int _sys_thread_id(); int _sys_procs_number( unsigned int* x_size, unsigned int* y_size, unsigned int* nprocs ); int _sys_vseg_get_vbase( char* vspace_name, char* vseg_name, unsigned int* vbase ); int _sys_vseg_get_length( char* vspace_name, char* vseg_name, unsigned int* length ); int _sys_xy_from_ptr( void* ptr, unsigned int* x, unsigned int* y ); int _sys_heap_info( unsigned int* vaddr, unsigned int* length, unsigned int x, unsigned int y ); #endif // Local Variables: // tab-width: 4 // c-basic-offset: 4 // c-file-offsets:((innamespace . 0)(inline-open . 0)) // indent-tabs-mode: nil // End: // vim: filetype=c:expandtab:shiftwidth=4:tabstop=4:softtabstop=4