source: soft/giet_vm/giet_kernel/sys_handler.h @ 517

Last change on this file since 517 was 516, checked in by alain, 10 years ago

Remove the vobj object from the mapping_info,
and remove global segment seg_unckdata.
  • Property svn:executable set to *
File size: 7.3 KB
Line 
1///////////////////////////////////////////////////////////////////////////////////
2// File     : sys_handler.h
3// Date     : 01/04/2012
4// Author   : alain greiner and joel porquet
5// Copyright (c) UPMC-LIP6
6///////////////////////////////////////////////////////////////////////////////////
7// The sys_handler.c and sys_handler.h files are part of the GIET-VM nano-kernel.
8// It define the syscall_vector[] (at the end of this file), as well as the
9// associated syscall handlers.
10///////////////////////////////////////////////////////////////////////////////////
11
12#ifndef _SYS_HANDLER_H
13#define _SYS_HANDLER_H
14
15#include "giet_config.h"
16#include "kernel_locks.h"
17
18///////////////////////////////////////////////////////////////////////////////
19//     Syscall Vector Table (indexed by syscall index)
20///////////////////////////////////////////////////////////////////////////////
21
22extern const void * _syscall_vector[64];
23
24///////////////////////////////////////////////////////////////////////////////
25// This structure is used by the nic_chbuf_t and fbf_chbuf_t structures.
26// It describes a single buffer descriptor. The useful information is
27// contained in one single 64 bits word (desc field):
28// - the 48 LSB bits contain the buffer physical address
29// - the MSB bit 63 indicates the buffer state (empty if 0)
30// This descriptor must be aligned on a cache line (64 bytes) to simplify
31// the software L2/L3 cache coherence when the IO bridge is used.
32///////////////////////////////////////////////////////////////////////////////
33
34typedef struct buffer_descriptor_s
35{
36    unsigned long long  desc;
37    unsigned int        padding[14];
38} buffer_descriptor_t;
39 
40///////////////////////////////////////////////////////////////////////////////
41// This structure is used by the CMA component to move a stream
42// of images from two user buffers to the frame buffer in kernel space.
43// It contains two chbuf arrays:
44// - The SRC chbuf contains two buffers (buf0 & buf1), in user space.
45// - The DST cbuf contains one single buffer (fbf), that is the frame buffer.
46// - The length field define the buffer size (bytes)
47// This structure must be 64 bytes aligned.
48///////////////////////////////////////////////////////////////////////////////
49
50typedef struct fbf_chbuf_s
51{
52    buffer_descriptor_t  buf0;         // first user buffer descriptor
53    buffer_descriptor_t  buf1;         // second user buffer descriptor
54    buffer_descriptor_t  fbf;          // frame buffer descriptor
55    unsigned int         length;       // buffer length (bytes)
56    unsigned int         padding[15];  // padding for 64 bytes alignment
57} fbf_chbuf_t;   
58
59///////////////////////////////////////////////////////////////////////////////
60// This structure is used by the CMA component to move a stream of containers
61// between the NIC chbuf containing 2 buffers, and a kernel chbuf
62// containing up to (X_SIZE * Y_SIZE) buffers (one buffer per cluster).
63// The same structure is used for both TX or RX transfers.
64// The number of distributed containers can be smaller than (X_SIZE * YSIZE).
65// The actual number of buffers used in the chbuf is defined by (xmax * ymax).
66// This structure must be 64 bytes aligned.
67///////////////////////////////////////////////////////////////////////////////
68
69typedef struct nic_chbuf_s
70{
71    buffer_descriptor_t  buffer[X_SIZE*Y_SIZE];  // kernel chbuf
72    unsigned int         xmax;                   // nb clusters in a row
73    unsigned int         ymax;                   // nb clusters in a column
74} nic_chbuf_t;
75
76///////////////////////////////////////////////////////////////////////////////
77//    TTY related syscall handlers
78///////////////////////////////////////////////////////////////////////////////
79
80int _sys_tty_alloc();
81
82int _sys_tty_write( const char*  buffer,
83                    unsigned int length,
84                    unsigned int channel );
85
86int _sys_tty_read(  char*        buffer,
87                    unsigned int length,
88                    unsigned int channel );
89
90int _sys_tty_get_lock( unsigned int   channel,
91                       unsigned int * save_sr_ptr );
92
93int _sys_tty_release_lock( unsigned int   channel,
94                           unsigned int * save_sr_ptr );
95
96//////////////////////////////////////////////////////////////////////////////
97//    TIM related syscall handlers
98//////////////////////////////////////////////////////////////////////////////
99
100int _sys_tim_alloc();
101
102int _sys_tim_start( unsigned int period );
103
104int _sys_tim_stop();
105
106//////////////////////////////////////////////////////////////////////////////
107//    NIC related syscall handlers
108//////////////////////////////////////////////////////////////////////////////
109
110int _sys_nic_alloc( unsigned int is_rx,
111                    unsigned int xmax,
112                    unsigned int ymax );
113
114
115int _sys_nic_start( unsigned int is_rx,
116                    unsigned int channel );
117
118int _sys_nic_move( unsigned int is_rx,
119                   unsigned int channel,
120                   void*        buffer );
121
122int _sys_nic_stop( unsigned int is_rx,
123                   unsigned int channel );
124
125int _sys_nic_clear( unsigned int is_rx,
126                    unsigned int channel );
127
128int _sys_nic_stats( unsigned int is_rx,
129                    unsigned int channel );
130
131//////////////////////////////////////////////////////////////////////////////
132//    FBF related syscall handlers
133//////////////////////////////////////////////////////////////////////////////
134
135int _sys_fbf_sync_write( unsigned int offset,
136                         void*        buffer,
137                         unsigned int length );
138
139int _sys_fbf_sync_read(  unsigned int offset,
140                         void*        buffer,
141                         unsigned int length );
142
143int _sys_fbf_cma_alloc();
144
145int _sys_fbf_cma_start( void*        vbase0, 
146                        void*        vbase1, 
147                        unsigned int length );
148
149int _sys_fbf_cma_display( unsigned int buffer_index );
150
151int _sys_fbf_cma_stop();
152
153//////////////////////////////////////////////////////////////////////////////
154//    Miscelaneous syscall handlers
155//////////////////////////////////////////////////////////////////////////////
156
157int _sys_ukn();
158
159int _sys_proc_xyp( unsigned int* x,
160                   unsigned int* y,
161                   unsigned int* p );
162
163int _sys_task_exit( char* string );
164
165int _context_switch();
166
167int _sys_local_task_id();
168
169int _sys_global_task_id();
170
171int _sys_thread_id();
172
173int _sys_procs_number( unsigned int* x_size,
174                       unsigned int* y_size, 
175                       unsigned int* nprocs );
176
177int _sys_vseg_get_vbase( char*         vspace_name,
178                         char*         vseg_name,
179                         unsigned int* vbase );
180
181int _sys_vseg_get_length( char*         vspace_name, 
182                          char*         vseg_name,
183                          unsigned int* length );
184
185int _sys_xy_from_ptr( void*          ptr,
186                      unsigned int*  x,
187                      unsigned int*  y );
188
189int _sys_heap_info( unsigned int* vaddr, 
190                    unsigned int* length,
191                    unsigned int  x,
192                    unsigned int  y ); 
193
194#endif
195
196// Local Variables:
197// tab-width: 4
198// c-basic-offset: 4
199// c-file-offsets:((innamespace . 0)(inline-open . 0))
200// indent-tabs-mode: nil
201// End:
202// vim: filetype=c:expandtab:shiftwidth=4:tabstop=4:softtabstop=4
203
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