1 | ///////////////////////////////////////////////////////////////////////////// |
---|
2 | // File : stdio.h |
---|
3 | // Date : 01/04/2010 |
---|
4 | // Author : alain greiner & Joel Porquet |
---|
5 | // Copyright (c) UPMC-LIP6 |
---|
6 | ///////////////////////////////////////////////////////////////////////////// |
---|
7 | // The stdio.c and stdio.h files are part of the GIET_VM nano-kernel. |
---|
8 | // This library contains all user-level functions that contain a system call |
---|
9 | // to access protected or shared ressources. |
---|
10 | ///////////////////////////////////////////////////////////////////////////// |
---|
11 | |
---|
12 | #ifndef _STDIO_H |
---|
13 | #define _STDIO_H |
---|
14 | |
---|
15 | // These define must be synchronised with |
---|
16 | // the _syscall_vector defined in file sys_handler.c |
---|
17 | |
---|
18 | #define SYSCALL_PROC_XYP 0x00 |
---|
19 | #define SYSCALL_PROC_TIME 0x01 |
---|
20 | #define SYSCALL_TTY_WRITE 0x02 |
---|
21 | #define SYSCALL_TTY_READ 0x03 |
---|
22 | #define SYSCALL_TTY_ALLOC 0x04 |
---|
23 | #define SYSCALL_TTY_GET_LOCK 0x05 |
---|
24 | #define SYSCALL_TTY_RELEASE_LOCK 0x06 |
---|
25 | #define SYSCALL_HEAP_INFO 0x07 |
---|
26 | #define SYSCALL_LOCAL_TASK_ID 0x08 |
---|
27 | #define SYSCALL_GLOBAL_TASK_ID 0x09 |
---|
28 | #define SYSCALL_FBF_CMA_ALLOC 0x0A |
---|
29 | #define SYSCALL_FBF_CMA_START 0x0B |
---|
30 | #define SYSCALL_FBF_CMA_DISPLAY 0x0C |
---|
31 | #define SYSCALL_FBF_CMA_STOP 0x0D |
---|
32 | #define SYSCALL_EXIT 0x0E |
---|
33 | #define SYSCALL_PROCS_NUMBER 0x0F |
---|
34 | |
---|
35 | #define SYSCALL_FBF_SYNC_WRITE 0x10 |
---|
36 | #define SYSCALL_FBF_SYNC_READ 0x11 |
---|
37 | #define SYSCALL_THREAD_ID 0x12 |
---|
38 | // 0x13 |
---|
39 | #define SYSCALL_TIM_ALLOC 0x14 |
---|
40 | #define SYSCALL_TIM_START 0x15 |
---|
41 | #define SYSCALL_TIM_STOP 0x16 |
---|
42 | // 0x17 |
---|
43 | // 0x18 |
---|
44 | #define SYSCALL_CTX_SWITCH 0x19 |
---|
45 | #define SYSCALL_VOBJ_GET_VBASE 0x1A |
---|
46 | #define SYSCALL_VOBJ_GET_LENGTH 0x1B |
---|
47 | #define SYSCALL_GET_XY 0x1C |
---|
48 | // 0x1D |
---|
49 | // 0x1E |
---|
50 | // 0x1F |
---|
51 | |
---|
52 | #define SYSCALL_FAT_OPEN 0x20 |
---|
53 | #define SYSCALL_FAT_READ 0x21 |
---|
54 | #define SYSCALL_FAT_WRITE 0x22 |
---|
55 | #define SYSCALL_FAT_LSEEK 0x23 |
---|
56 | #define SYSCALL_FAT_FSTAT 0x24 |
---|
57 | #define SYSCALL_FAT_CLOSE 0x25 |
---|
58 | // 0x26 |
---|
59 | // 0x27 |
---|
60 | // 0x28 |
---|
61 | // 0x29 |
---|
62 | // 0x2A |
---|
63 | // 0x2B |
---|
64 | // 0x2C |
---|
65 | // 0x2D |
---|
66 | // 0x2E |
---|
67 | // 0x2F |
---|
68 | |
---|
69 | #define SYSCALL_NIC_ALLOC 0x30 |
---|
70 | #define SYSCALL_NIC_START 0x31 |
---|
71 | #define SYSCALL_NIC_MOVE 0x32 |
---|
72 | #define SYSCALL_NIC_STOP 0x33 |
---|
73 | #define SYSCALL_NIC_STATS 0x34 |
---|
74 | #define SYSCALL_NIC_CLEAR 0x35 |
---|
75 | // 0x36 |
---|
76 | // 0x37 |
---|
77 | // 0x38 |
---|
78 | // 0x39 |
---|
79 | // 0x3A |
---|
80 | #define SYSCALL_COPROC_COMPLETED 0x3B |
---|
81 | #define SYSCALL_COPROC_ALLOC 0x3C |
---|
82 | #define SYSCALL_COPROC_CHANNEL_INIT 0x3D |
---|
83 | #define SYSCALL_COPROC_RUN 0x3E |
---|
84 | #define SYSCALL_COPROC_RELEASE 0x3F |
---|
85 | |
---|
86 | //////////////////////////////////////////////////////////////////////////// |
---|
87 | // NULL pointer definition |
---|
88 | //////////////////////////////////////////////////////////////////////////// |
---|
89 | |
---|
90 | #define NULL (void *)0 |
---|
91 | |
---|
92 | //////////////////////////////////////////////////////////////////////////// |
---|
93 | // This generic C function is used to implement all system calls. |
---|
94 | // It writes the system call arguments in the proper registers, |
---|
95 | // and tells GCC what has been modified by system call execution. |
---|
96 | // Returns -1 to signal an error. |
---|
97 | //////////////////////////////////////////////////////////////////////////// |
---|
98 | static inline int sys_call( int call_no, |
---|
99 | int arg_0, |
---|
100 | int arg_1, |
---|
101 | int arg_2, |
---|
102 | int arg_3 ) |
---|
103 | { |
---|
104 | register int reg_no_and_output asm("v0") = call_no; |
---|
105 | register int reg_a0 asm("a0") = arg_0; |
---|
106 | register int reg_a1 asm("a1") = arg_1; |
---|
107 | register int reg_a2 asm("a2") = arg_2; |
---|
108 | register int reg_a3 asm("a3") = arg_3; |
---|
109 | |
---|
110 | asm volatile( |
---|
111 | "syscall" |
---|
112 | : "+r" (reg_no_and_output), /* input/output argument */ |
---|
113 | "+r" (reg_a0), |
---|
114 | "+r" (reg_a1), |
---|
115 | "+r" (reg_a2), |
---|
116 | "+r" (reg_a3), |
---|
117 | "+r" (reg_no_and_output) |
---|
118 | : /* input arguments */ |
---|
119 | : "memory", |
---|
120 | /* These persistant registers will be saved on the stack by the |
---|
121 | * compiler only if they contain relevant data. */ |
---|
122 | "at", |
---|
123 | "v1", |
---|
124 | "ra", |
---|
125 | "t0", |
---|
126 | "t1", |
---|
127 | "t2", |
---|
128 | "t3", |
---|
129 | "t4", |
---|
130 | "t5", |
---|
131 | "t6", |
---|
132 | "t7", |
---|
133 | "t8", |
---|
134 | "t9" |
---|
135 | ); |
---|
136 | return (volatile int)reg_no_and_output; |
---|
137 | } |
---|
138 | |
---|
139 | ////////////////////////////////////////////////////////////////////////// |
---|
140 | // MIPS32 related system calls |
---|
141 | ////////////////////////////////////////////////////////////////////////// |
---|
142 | |
---|
143 | extern void giet_proc_xyp( unsigned int* cluster_x, |
---|
144 | unsigned int* cluster_y, |
---|
145 | unsigned int* lpid ); |
---|
146 | |
---|
147 | extern unsigned int giet_proctime(); |
---|
148 | |
---|
149 | extern unsigned int giet_rand(); |
---|
150 | |
---|
151 | ////////////////////////////////////////////////////////////////////////// |
---|
152 | // Task context system calls |
---|
153 | ////////////////////////////////////////////////////////////////////////// |
---|
154 | |
---|
155 | extern unsigned int giet_proc_task_id(); |
---|
156 | |
---|
157 | extern unsigned int giet_global_task_id(); |
---|
158 | |
---|
159 | extern unsigned int giet_thread_id(); |
---|
160 | |
---|
161 | ////////////////////////////////////////////////////////////////////////// |
---|
162 | // Coprocessors related system calls |
---|
163 | ////////////////////////////////////////////////////////////////////////// |
---|
164 | |
---|
165 | // this structure is used by the giet_coproc_channel_init() |
---|
166 | // system call to specify the communication channel parameters. |
---|
167 | typedef struct giet_coproc_channel |
---|
168 | { |
---|
169 | unsigned int channel_mode; // MWMR / DMA_IRQ / DMA_NO_IRQ |
---|
170 | unsigned int buffer_size; // memory buffer size |
---|
171 | unsigned int buffer_vaddr; // memory buffer virtual address |
---|
172 | unsigned int mwmr_vaddr; // MWMR descriptor virtual address |
---|
173 | unsigned int lock_vaddr; // lock for MWMR virtual address |
---|
174 | } giet_coproc_channel_t; |
---|
175 | |
---|
176 | extern void giet_coproc_alloc( unsigned int coproc_type, |
---|
177 | unsigned int* coproc_info ); |
---|
178 | |
---|
179 | extern void giet_coproc_release( unsigned int coproc_reg_index ); |
---|
180 | |
---|
181 | extern void giet_coproc_channel_init( unsigned int channel, |
---|
182 | giet_coproc_channel_t* desc ); |
---|
183 | |
---|
184 | extern void giet_coproc_run( unsigned int coproc_reg_index ); |
---|
185 | |
---|
186 | extern void giet_coproc_completed(); |
---|
187 | |
---|
188 | ////////////////////////////////////////////////////////////////////////// |
---|
189 | // TTY device related system calls |
---|
190 | ////////////////////////////////////////////////////////////////////////// |
---|
191 | |
---|
192 | extern void giet_tty_alloc(); |
---|
193 | |
---|
194 | extern void giet_tty_printf( char* format, ... ); |
---|
195 | |
---|
196 | extern void giet_shr_printf( char* format, ... ); |
---|
197 | |
---|
198 | extern void giet_tty_getc( char* byte ); |
---|
199 | |
---|
200 | extern void giet_tty_gets( char* buf, unsigned int bufsize ); |
---|
201 | |
---|
202 | extern void giet_tty_getw( unsigned int* val ); |
---|
203 | |
---|
204 | ////////////////////////////////////////////////////////////////////////// |
---|
205 | // TIMER device related system calls |
---|
206 | ////////////////////////////////////////////////////////////////////////// |
---|
207 | |
---|
208 | extern void giet_timer_alloc(); |
---|
209 | |
---|
210 | extern void giet_timer_start( unsigned int period ); |
---|
211 | |
---|
212 | extern void giet_timer_stop(); |
---|
213 | |
---|
214 | ////////////////////////////////////////////////////////////////////////// |
---|
215 | // Frame buffer device related system calls |
---|
216 | ////////////////////////////////////////////////////////////////////////// |
---|
217 | |
---|
218 | extern void giet_fbf_cma_alloc(); |
---|
219 | |
---|
220 | extern void giet_fbf_cma_start( void* buf0, |
---|
221 | void* buf1, |
---|
222 | unsigned int length ); |
---|
223 | |
---|
224 | extern void giet_fbf_cma_display( unsigned int buffer ); |
---|
225 | |
---|
226 | extern void giet_fbf_cma_stop(); |
---|
227 | |
---|
228 | extern void giet_fbf_sync_read( unsigned int offset, |
---|
229 | void* buffer, |
---|
230 | unsigned int length ); |
---|
231 | |
---|
232 | extern void giet_fbf_sync_write( unsigned int offset, |
---|
233 | void* buffer, |
---|
234 | unsigned int length ); |
---|
235 | |
---|
236 | ////////////////////////////////////////////////////////////////////////// |
---|
237 | // NIC related system calls |
---|
238 | ////////////////////////////////////////////////////////////////////////// |
---|
239 | |
---|
240 | extern unsigned int giet_nic_rx_alloc( unsigned int xmax, unsigned int ymax ); |
---|
241 | |
---|
242 | extern unsigned int giet_nic_tx_alloc( unsigned int xmax, unsigned int ymax ); |
---|
243 | |
---|
244 | extern void giet_nic_rx_start( unsigned int channel ); |
---|
245 | |
---|
246 | extern void giet_nic_tx_start( unsigned int channel ); |
---|
247 | |
---|
248 | extern void giet_nic_rx_move( unsigned int channel, void* buffer ); |
---|
249 | |
---|
250 | extern void giet_nic_tx_move( unsigned int channel, void* buffer ); |
---|
251 | |
---|
252 | extern void giet_nic_rx_stop( unsigned int channel ); |
---|
253 | |
---|
254 | extern void giet_nic_tx_stop( unsigned int channel ); |
---|
255 | |
---|
256 | extern void giet_nic_rx_stats( unsigned int channel ); |
---|
257 | |
---|
258 | extern void giet_nic_tx_stats( unsigned int channel ); |
---|
259 | |
---|
260 | extern void giet_nic_rx_clear( unsigned int channel ); |
---|
261 | |
---|
262 | extern void giet_nic_tx_clear( unsigned int channel ); |
---|
263 | |
---|
264 | ////////////////////////////////////////////////////////////////////////// |
---|
265 | // FAT related system calls |
---|
266 | ////////////////////////////////////////////////////////////////////////// |
---|
267 | |
---|
268 | extern int giet_fat_open( const char* pathname, |
---|
269 | unsigned int flags ); |
---|
270 | |
---|
271 | extern void giet_fat_read( unsigned int fd, |
---|
272 | void* buffer, |
---|
273 | unsigned int count, |
---|
274 | unsigned int offset ); |
---|
275 | |
---|
276 | extern void giet_fat_write( unsigned int fd, |
---|
277 | void* buffer, |
---|
278 | unsigned int count, |
---|
279 | unsigned int offset ); |
---|
280 | |
---|
281 | extern void giet_fat_lseek( unsigned int fd, |
---|
282 | unsigned int offset, |
---|
283 | unsigned int whence ); |
---|
284 | |
---|
285 | extern void giet_fat_fstat( unsigned int fd ); |
---|
286 | |
---|
287 | extern void giet_fat_close( unsigned int fd ); |
---|
288 | |
---|
289 | ////////////////////////////////////////////////////////////////////////// |
---|
290 | // Miscelaneous system calls |
---|
291 | ////////////////////////////////////////////////////////////////////////// |
---|
292 | |
---|
293 | extern void giet_exit( char* string ); |
---|
294 | |
---|
295 | extern void giet_assert( unsigned int condition, |
---|
296 | char* string ); |
---|
297 | |
---|
298 | extern void giet_context_switch(); |
---|
299 | |
---|
300 | extern void giet_procs_number( unsigned int* x_size, |
---|
301 | unsigned int* y_size, |
---|
302 | unsigned int* nprocs ); |
---|
303 | |
---|
304 | extern void giet_vobj_get_vbase( char* vspace_name, |
---|
305 | char* vobj_name, |
---|
306 | unsigned int* vobj_vaddr); |
---|
307 | |
---|
308 | extern void giet_vobj_get_length( char* vspace_name, |
---|
309 | char* vobj_name, |
---|
310 | unsigned int* vobj_vaddr); |
---|
311 | |
---|
312 | extern void giet_heap_info( unsigned int* vaddr, |
---|
313 | unsigned int* length, |
---|
314 | unsigned int x, |
---|
315 | unsigned int y ); |
---|
316 | |
---|
317 | extern void giet_get_xy( void* ptr, |
---|
318 | unsigned int* px, |
---|
319 | unsigned int* py ); |
---|
320 | |
---|
321 | #endif |
---|
322 | |
---|
323 | // Local Variables: |
---|
324 | // tab-width: 4 |
---|
325 | // c-basic-offset: 4 |
---|
326 | // c-file-offsets:((innamespace . 0)(inline-open . 0)) |
---|
327 | // indent-tabs-mode: nil |
---|
328 | // End: |
---|
329 | // vim: filetype=c:expandtab:shiftwidth=4:tabstop=4:softtabstop=4 |
---|
330 | |
---|