source: trunk/kernel/kern/printk.h @ 38

Last change on this file since 38 was 23, checked in by alain, 8 years ago

Introduce syscalls.
File size: 8.0 KB
Line 
1/*
2 * printk.h - Kernel Log & debug messages API definition.
3 *
4 * authors  Alain Greiner (2016)
5 *
6 * Copyright (c) UPMC Sorbonne Universites
7 *
8 * This file is part of ALMOS-MKH.
9 *
10 * ALMOS-MKH is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; version 2.0 of the License.
13 *
14 * ALMOS-MKH is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with ALMOS-MKH; if not, write to the Free Software Foundation,
21 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24///////////////////////////////////////////////////////////////////////////////////
25// The printk.c and printk.h files define the functions used by the kernel
26// to display messages on a text terminal.
27// Two access modes are supported:
28// - The printk() function displays kernel messages on the kernel terminal TXT0,
29//   using a busy waiting policy: It calls directly the relevant TXT driver,
30//   after taking the TXT0 chdev lock for exclusive access to the TXT0 terminal.
31// - The user_printk() function displays messages on the calling thread private
32//   terminal, using a descheduling policy: it register the request in the selected
33//   TXT chdev waiting queue and deschedule. The calling thread is reactivated by
34//   the IRQ signaling completion.
35// Both functions use the generic TXT device to call the proper implementation
36// dependant TXT driver.
37// Finally these files define a set of conditionnal trace <***_dmsg> for debug.
38///////////////////////////////////////////////////////////////////////////////////
39
40#ifndef _PRINTK_H
41#define _PRINTK_H
42
43#include <hal_types.h>
44#include <stdarg.h>
45
46
47/**********************************************************************************
48 * This function build a formated string.
49 * The supported formats are defined below :
50 *   %c : single character
51 *   %d : signed decimal 32 bits integer
52 *   %u : unsigned decimal 32 bits integer
53 *   %x : hexadecimal 32 bits integer
54 *   %l : hexadecimal 64 bits integer
55 *   %s : NUL terminated character string
56 **********************************************************************************
57 * @ string     : pointer on target buffer (allocated by caller).
58 * @ length     : target buffer length (number of bytes).
59 * @ format     : format respecting the printf syntax.
60 * @ returns the string length (including NUL) if success / return -1 if error.
61 *********************************************************************************/
62uint32_t snprintf( char     * string,
63                   uint32_t   length,
64                   char     * format, ... );
65
66/**********************************************************************************
67 * This function displays a formated string on the kernel terminal TXT0,
68 * using a busy waiting policy: It calls directly the relevant TXT driver,
69 * after taking the TXT0 chdev lock for exclusive access to the TXT0 terminal.
70 **********************************************************************************
71 * @ format     : formated string.
72 *********************************************************************************/
73void         printk( char* format, ... );
74
75/**********************************************************************************
76 * Display a formated string on the calling thread private terminal, using a
77 * descheduling policy: it register the request in the selected TXT chdev waiting
78 * queue and deschedule. IT is reactivated by the IRQ signaling completion.
79 * Not fully implemented yet ( use TXT0 in deschedling mode ).
80 **********************************************************************************
81 * @ format     : formated string.
82 *********************************************************************************/
83void         user_printk( char* format, ... );
84
85/**********************************************************************************
86 * This function displaya "PANIC" message and force the calling core in
87 * sleeping mode if a Boolean condition is false.
88 * These functions are actually used to debug the kernel...
89 **********************************************************************************
90 * @ condition     : condition that must be true.
91 * @ function_name : name of the calling function.
92 * @ string        : error message if condition is false.
93 *********************************************************************************/
94inline void assert( bool_t       condition,
95                    const char * function_name,
96                    char       * string );
97
98///////////////////////////////////////////////////////////////////////////////////
99//       Conditionnal debug macros
100///////////////////////////////////////////////////////////////////////////////////
101
102#if CONFIG_CONTEXT_DEBUG
103#define context_dmsg(...)   printk(__VA_ARGS__)
104#else
105#define context_dmsg(...)
106#endif
107
108#if CONFIG_CORE_DEBUG
109#define core_dmsg(...)   printk(__VA_ARGS__)
110#else
111#define core_dmsg(...)
112#endif
113
114#if CONFIG_DQDT_DEBUG
115#define dma_dmsg(...)   printk(__VA_ARGS__)
116#else
117#define dma_dmsg(...)
118#endif
119
120#if CONFIG_DQDT_DEBUG
121#define dqdt_dmsg(...)   printk(__VA_ARGS__)
122#else
123#define dqdt_dmsg(...)
124#endif
125
126#if CONFIG_ELF_DEBUG
127#define elf_dmsg(...)   printk(__VA_ARGS__)
128#else
129#define elf_dmsg(...)
130#endif
131
132#if CONFIG_EXEC_DEBUG
133#define exec_dmsg(...)   printk(__VA_ARGS__)
134#else
135#define exec_dmsg(...)
136#endif
137
138#if CONFIG_FBF_DEBUG
139#define fbf_dmsg(...)   printk(__VA_ARGS__)
140#else
141#define fbf_dmsg(...)
142#endif
143
144#if CONFIG_FORK_DEBUG
145#define fork_dmsg(...)   printk(__VA_ARGS__)
146#else
147#define fork_dmsg(...)
148#endif
149
150#if CONFIG_ICU_DEBUG
151#define icu_dmsg(...)   printk(__VA_ARGS__)
152#else
153#define icu_dmsg(...)
154#endif
155
156#if CONFIG_IOC_DEBUG
157#define ioc_dmsg(...)   printk(__VA_ARGS__)
158#else
159#define ioc_dmsg(...)
160#endif
161
162#if CONFIG_KCM_DEBUG
163#define kcm_dmsg(...) printk(__VA_ARGS__)
164#else
165#define kcm_dmsg(...)
166#endif
167
168#if CONFIG_KHM_DEBUG
169#define khm_dmsg(...) printk(__VA_ARGS__)
170#else
171#define khm_dmsg(...)
172#endif
173
174#if CONFIG_KINIT_DEBUG
175#define kinit_dmsg(...) printk(__VA_ARGS__)
176#else
177#define kinit_dmsg(...)
178#endif
179
180#if CONFIG_KMEM_DEBUG
181#define kmem_dmsg(...) printk(__VA_ARGS__)
182#else
183#define kmem_dmsg(...)
184#endif
185
186#if CONFIG_MAPPER_DEBUG
187#define mapper_dmsg(...)   printk(__VA_ARGS__)
188#else
189#define mapper_dmsg(...)
190#endif
191
192#if CONFIG_MMC_DEBUG
193#define mmc_dmsg(...)   printk(__VA_ARGS__)
194#else
195#define mmc_dmsg(...)
196#endif
197
198#if CONFIG_NIC_DEBUG
199#define nic_dmsg(...)   printk(__VA_ARGS__)
200#else
201#define nic_dmsg(...)
202#endif
203
204#if CONFIG_PIC_DEBUG
205#define pic_dmsg(...)   printk(__VA_ARGS__)
206#else
207#define pic_dmsg(...)
208#endif
209
210#if CONFIG_PPM_DEBUG
211#define ppm_dmsg(...)   printk(__VA_ARGS__)
212#else
213#define ppm_dmsg(...)
214#endif
215
216#if CONFIG_PROCESS_DEBUG
217#define process_dmsg(...)   printk(__VA_ARGS__)
218#else
219#define process_dmsg(...)
220#endif
221
222#if CONFIG_RPC_DEBUG
223#define rpc_dmsg(...)   printk(__VA_ARGS__)
224#else
225#define rpc_dmsg(...)
226#endif
227
228#if CONFIG_SCHED_DEBUG
229#define sched_dmsg(...)   printk(__VA_ARGS__)
230#else
231#define sched_dmsg(...)
232#endif
233
234#if CONFIG_SIGNAL_DEBUG
235#define signal_dmsg(...)   printk(__VA_ARGS__)
236#else
237#define signal_dmsg(...)
238#endif
239
240#if CONFIG_SYSCALL_DEBUG
241#define syscall_dmsg(...)   printk(__VA_ARGS__)
242#else
243#define syscall_dmsg(...)
244#endif
245
246#if CONFIG_THREAD_DEBUG
247#define thread_dmsg(...)   printk(__VA_ARGS__)
248#else
249#define thread_dmsg(...)
250#endif
251
252#if CONFIG_TXT_DEBUG
253#define txt_dmsg(...)   printk(__VA_ARGS__)
254#else
255#define txt_dmsg(...)
256#endif
257
258#if CONFIG_VFS_DEBUG
259#define vfs_dmsg(...)   printk(__VA_ARGS__)
260#else
261#define vfs_dmsg(...)
262#endif
263
264#if CONFIG_VMM_DEBUG
265#define vmm_dmsg(...)   printk(__VA_ARGS__)
266#else
267#define vmm_dmsg(...)
268#endif
269
270
271#endif  // _PRINTK_H
272
273// Local Variables:
274// tab-width: 4
275// c-basic-offset: 4
276// c-file-offsets:((innamespace . 0)(inline-open . 0))
277// indent-tabs-mode: nil
278// End:
279// vim: filetype=c:expandtab:shiftwidth=4:tabstop=4:softtabstop=4
280
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