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1 | /* |
1 | /* |
2 | * Copyright (c) 2003 Josef Cejka |
2 | * Copyright (c) 2003 Josef Cejka |
3 | * Copyright (c) 2005 Jakub Jermar |
3 | * Copyright (c) 2005 Jakub Jermar |
4 | * All rights reserved. |
4 | * All rights reserved. |
5 | * |
5 | * |
6 | * Redistribution and use in source and binary forms, with or without |
6 | * Redistribution and use in source and binary forms, with or without |
7 | * modification, are permitted provided that the following conditions |
7 | * modification, are permitted provided that the following conditions |
8 | * are met: |
8 | * are met: |
9 | * |
9 | * |
10 | * - Redistributions of source code must retain the above copyright |
10 | * - Redistributions of source code must retain the above copyright |
11 | * notice, this list of conditions and the following disclaimer. |
11 | * notice, this list of conditions and the following disclaimer. |
12 | * - Redistributions in binary form must reproduce the above copyright |
12 | * - Redistributions in binary form must reproduce the above copyright |
13 | * notice, this list of conditions and the following disclaimer in the |
13 | * notice, this list of conditions and the following disclaimer in the |
14 | * documentation and/or other materials provided with the distribution. |
14 | * documentation and/or other materials provided with the distribution. |
15 | * - The name of the author may not be used to endorse or promote products |
15 | * - The name of the author may not be used to endorse or promote products |
16 | * derived from this software without specific prior written permission. |
16 | * derived from this software without specific prior written permission. |
17 | * |
17 | * |
18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
28 | */ |
28 | */ |
29 | 29 | ||
30 | /** @addtogroup genericconsole |
30 | /** @addtogroup genericconsole |
31 | * @{ |
31 | * @{ |
32 | */ |
32 | */ |
33 | /** @file |
33 | /** @file |
34 | */ |
34 | */ |
35 | 35 | ||
36 | #include <console/console.h> |
36 | #include <console/console.h> |
37 | #include <console/chardev.h> |
37 | #include <console/chardev.h> |
38 | #include <sysinfo/sysinfo.h> |
38 | #include <sysinfo/sysinfo.h> |
39 | #include <synch/waitq.h> |
39 | #include <synch/waitq.h> |
40 | #include <synch/spinlock.h> |
40 | #include <synch/spinlock.h> |
41 | #include <arch/types.h> |
41 | #include <arch/types.h> |
42 | #include <ddi/irq.h> |
42 | #include <ddi/irq.h> |
43 | #include <ddi/ddi.h> |
43 | #include <ddi/ddi.h> |
44 | #include <event/event.h> |
44 | #include <event/event.h> |
45 | #include <ipc/irq.h> |
45 | #include <ipc/irq.h> |
46 | #include <arch.h> |
46 | #include <arch.h> |
47 | #include <func.h> |
47 | #include <func.h> |
48 | #include <print.h> |
48 | #include <print.h> |
- | 49 | #include <putchar.h> |
|
49 | #include <atomic.h> |
50 | #include <atomic.h> |
50 | #include <syscall/copy.h> |
51 | #include <syscall/copy.h> |
51 | #include <errno.h> |
52 | #include <errno.h> |
52 | 53 | ||
53 | #define KLOG_SIZE PAGE_SIZE |
54 | #define KLOG_SIZE PAGE_SIZE |
54 | #define KLOG_LATENCY 8 |
55 | #define KLOG_LATENCY 8 |
55 | 56 | ||
56 | /** Kernel log cyclic buffer */ |
57 | /** Kernel log cyclic buffer */ |
57 | static char klog[KLOG_SIZE] __attribute__ ((aligned (PAGE_SIZE))); |
58 | static wchar_t klog[KLOG_SIZE] __attribute__ ((aligned (PAGE_SIZE))); |
58 | 59 | ||
59 | /** Kernel log initialized */ |
60 | /** Kernel log initialized */ |
60 | static bool klog_inited = false; |
61 | static bool klog_inited = false; |
61 | /** First kernel log characters */ |
62 | /** First kernel log characters */ |
62 | static index_t klog_start = 0; |
63 | static index_t klog_start = 0; |
63 | /** Number of valid kernel log characters */ |
64 | /** Number of valid kernel log characters */ |
64 | static size_t klog_len = 0; |
65 | static size_t klog_len = 0; |
65 | /** Number of stored (not printed) kernel log characters */ |
66 | /** Number of stored (not printed) kernel log characters */ |
66 | static size_t klog_stored = 0; |
67 | static size_t klog_stored = 0; |
67 | /** Number of stored kernel log characters for uspace */ |
68 | /** Number of stored kernel log characters for uspace */ |
68 | static size_t klog_uspace = 0; |
69 | static size_t klog_uspace = 0; |
69 | 70 | ||
70 | /** Silence output */ |
71 | /** Silence output */ |
71 | bool silent = false; |
72 | bool silent = false; |
72 | 73 | ||
73 | /** Kernel log spinlock */ |
74 | /** Kernel log spinlock */ |
74 | SPINLOCK_INITIALIZE(klog_lock); |
75 | SPINLOCK_INITIALIZE(klog_lock); |
75 | 76 | ||
76 | /** Physical memory area used for klog buffer */ |
77 | /** Physical memory area used for klog buffer */ |
77 | static parea_t klog_parea; |
78 | static parea_t klog_parea; |
78 | 79 | ||
79 | /** Standard input and output character devices */ |
80 | /** Standard input and output character devices */ |
80 | indev_t *stdin = NULL; |
81 | indev_t *stdin = NULL; |
81 | outdev_t *stdout = NULL; |
82 | outdev_t *stdout = NULL; |
82 | 83 | ||
83 | /** Initialize kernel logging facility |
84 | /** Initialize kernel logging facility |
84 | * |
85 | * |
85 | * The shared area contains kernel cyclic buffer. Userspace application may |
86 | * The shared area contains kernel cyclic buffer. Userspace application may |
86 | * be notified on new data with indication of position and size |
87 | * be notified on new data with indication of position and size |
87 | * of the data within the circular buffer. |
88 | * of the data within the circular buffer. |
88 | * |
89 | * |
89 | */ |
90 | */ |
90 | void klog_init(void) |
91 | void klog_init(void) |
91 | { |
92 | { |
92 | void *faddr = (void *) KA2PA(klog); |
93 | void *faddr = (void *) KA2PA(klog); |
93 | 94 | ||
94 | ASSERT((uintptr_t) faddr % FRAME_SIZE == 0); |
95 | ASSERT((uintptr_t) faddr % FRAME_SIZE == 0); |
95 | ASSERT(KLOG_SIZE % FRAME_SIZE == 0); |
96 | ASSERT(KLOG_SIZE % FRAME_SIZE == 0); |
96 | 97 | ||
97 | klog_parea.pbase = (uintptr_t) faddr; |
98 | klog_parea.pbase = (uintptr_t) faddr; |
98 | klog_parea.frames = SIZE2FRAMES(KLOG_SIZE); |
99 | klog_parea.frames = SIZE2FRAMES(sizeof(klog)); |
99 | ddi_parea_register(&klog_parea); |
100 | ddi_parea_register(&klog_parea); |
100 | 101 | ||
101 | sysinfo_set_item_val("klog.faddr", NULL, (unative_t) faddr); |
102 | sysinfo_set_item_val("klog.faddr", NULL, (unative_t) faddr); |
102 | sysinfo_set_item_val("klog.pages", NULL, SIZE2FRAMES(KLOG_SIZE)); |
103 | sysinfo_set_item_val("klog.pages", NULL, SIZE2FRAMES(sizeof(klog))); |
103 | 104 | ||
104 | spinlock_lock(&klog_lock); |
105 | spinlock_lock(&klog_lock); |
105 | klog_inited = true; |
106 | klog_inited = true; |
106 | spinlock_unlock(&klog_lock); |
107 | spinlock_unlock(&klog_lock); |
107 | } |
108 | } |
108 | 109 | ||
109 | void grab_console(void) |
110 | void grab_console(void) |
110 | { |
111 | { |
111 | silent = false; |
112 | silent = false; |
112 | arch_grab_console(); |
113 | arch_grab_console(); |
113 | } |
114 | } |
114 | 115 | ||
115 | void release_console(void) |
116 | void release_console(void) |
116 | { |
117 | { |
117 | silent = true; |
118 | silent = true; |
118 | arch_release_console(); |
119 | arch_release_console(); |
119 | } |
120 | } |
120 | 121 | ||
121 | /** Tell kernel to get keyboard/console access again */ |
122 | /** Tell kernel to get keyboard/console access again */ |
122 | unative_t sys_debug_enable_console(void) |
123 | unative_t sys_debug_enable_console(void) |
123 | { |
124 | { |
124 | #ifdef CONFIG_KCONSOLE |
125 | #ifdef CONFIG_KCONSOLE |
125 | grab_console(); |
126 | grab_console(); |
126 | return true; |
127 | return true; |
127 | #else |
128 | #else |
128 | return false; |
129 | return false; |
129 | #endif |
130 | #endif |
130 | } |
131 | } |
131 | 132 | ||
132 | /** Tell kernel to relinquish keyboard/console access */ |
133 | /** Tell kernel to relinquish keyboard/console access */ |
133 | unative_t sys_debug_disable_console(void) |
134 | unative_t sys_debug_disable_console(void) |
134 | { |
135 | { |
135 | release_console(); |
136 | release_console(); |
136 | return true; |
137 | return true; |
137 | } |
138 | } |
138 | 139 | ||
139 | bool check_poll(indev_t *indev) |
140 | bool check_poll(indev_t *indev) |
140 | { |
141 | { |
141 | if (indev == NULL) |
142 | if (indev == NULL) |
142 | return false; |
143 | return false; |
143 | 144 | ||
144 | if (indev->op == NULL) |
145 | if (indev->op == NULL) |
145 | return false; |
146 | return false; |
146 | 147 | ||
147 | return (indev->op->poll != NULL); |
148 | return (indev->op->poll != NULL); |
148 | } |
149 | } |
149 | 150 | ||
150 | /** Get character from input character device. Do not echo character. |
151 | /** Get character from input character device. Do not echo character. |
151 | * |
152 | * |
152 | * @param indev Input character device. |
153 | * @param indev Input character device. |
153 | * @return Character read. |
154 | * @return Character read. |
154 | * |
155 | * |
155 | */ |
156 | */ |
156 | uint8_t _getc(indev_t *indev) |
157 | uint8_t _getc(indev_t *indev) |
157 | { |
158 | { |
158 | if (atomic_get(&haltstate)) { |
159 | if (atomic_get(&haltstate)) { |
159 | /* If we are here, we are hopefully on the processor that |
160 | /* If we are here, we are hopefully on the processor that |
160 | * issued the 'halt' command, so proceed to read the character |
161 | * issued the 'halt' command, so proceed to read the character |
161 | * directly from input |
162 | * directly from input |
162 | */ |
163 | */ |
163 | if (check_poll(indev)) |
164 | if (check_poll(indev)) |
164 | return indev->op->poll(indev); |
165 | return indev->op->poll(indev); |
165 | 166 | ||
166 | /* No other way of interacting with user */ |
167 | /* No other way of interacting with user */ |
167 | interrupts_disable(); |
168 | interrupts_disable(); |
168 | 169 | ||
169 | if (CPU) |
170 | if (CPU) |
170 | printf("cpu%u: ", CPU->id); |
171 | printf("cpu%u: ", CPU->id); |
171 | else |
172 | else |
172 | printf("cpu: "); |
173 | printf("cpu: "); |
173 | printf("halted (no polling input)\n"); |
174 | printf("halted (no polling input)\n"); |
174 | cpu_halt(); |
175 | cpu_halt(); |
175 | } |
176 | } |
176 | 177 | ||
177 | waitq_sleep(&indev->wq); |
178 | waitq_sleep(&indev->wq); |
178 | ipl_t ipl = interrupts_disable(); |
179 | ipl_t ipl = interrupts_disable(); |
179 | spinlock_lock(&indev->lock); |
180 | spinlock_lock(&indev->lock); |
180 | uint8_t ch = indev->buffer[(indev->index - indev->counter) % INDEV_BUFLEN]; |
181 | uint8_t ch = indev->buffer[(indev->index - indev->counter) % INDEV_BUFLEN]; |
181 | indev->counter--; |
182 | indev->counter--; |
182 | spinlock_unlock(&indev->lock); |
183 | spinlock_unlock(&indev->lock); |
183 | interrupts_restore(ipl); |
184 | interrupts_restore(ipl); |
184 | 185 | ||
185 | return ch; |
186 | return ch; |
186 | } |
187 | } |
187 | 188 | ||
188 | /** Get string from input character device. |
189 | /** Get string from input character device. |
189 | * |
190 | * |
190 | * Read characters from input character device until first occurrence |
191 | * Read characters from input character device until first occurrence |
191 | * of newline character. |
192 | * of newline character. |
192 | * |
193 | * |
193 | * @param indev Input character device. |
194 | * @param indev Input character device. |
194 | * @param buf Buffer where to store string terminated by '\0'. |
195 | * @param buf Buffer where to store string terminated by '\0'. |
195 | * @param buflen Size of the buffer. |
196 | * @param buflen Size of the buffer. |
196 | * |
197 | * |
197 | * @return Number of characters read. |
198 | * @return Number of characters read. |
198 | * |
199 | * |
199 | */ |
200 | */ |
200 | count_t gets(indev_t *indev, char *buf, size_t buflen) |
201 | count_t gets(indev_t *indev, char *buf, size_t buflen) |
201 | { |
202 | { |
202 | index_t index = 0; |
203 | index_t index = 0; |
203 | 204 | ||
204 | while (index < buflen) { |
205 | while (index < buflen) { |
205 | char ch = _getc(indev); |
206 | char ch = _getc(indev); |
206 | if (ch == '\b') { |
207 | if (ch == '\b') { |
207 | if (index > 0) { |
208 | if (index > 0) { |
208 | index--; |
209 | index--; |
209 | /* Space backspace, space */ |
210 | /* Space backspace, space */ |
210 | putchar('\b'); |
211 | putchar('\b'); |
211 | putchar(' '); |
212 | putchar(' '); |
212 | putchar('\b'); |
213 | putchar('\b'); |
213 | } |
214 | } |
214 | continue; |
215 | continue; |
215 | } |
216 | } |
216 | putchar(ch); |
217 | putchar(ch); |
217 | 218 | ||
218 | if (ch == '\n') { /* end of string => write 0, return */ |
219 | if (ch == '\n') { /* end of string => write 0, return */ |
219 | buf[index] = '\0'; |
220 | buf[index] = '\0'; |
220 | return (count_t) index; |
221 | return (count_t) index; |
221 | } |
222 | } |
222 | buf[index++] = ch; |
223 | buf[index++] = ch; |
223 | } |
224 | } |
224 | 225 | ||
225 | return (count_t) index; |
226 | return (count_t) index; |
226 | } |
227 | } |
227 | 228 | ||
228 | /** Get character from input device & echo it to screen */ |
229 | /** Get character from input device & echo it to screen */ |
229 | uint8_t getc(indev_t *indev) |
230 | uint8_t getc(indev_t *indev) |
230 | { |
231 | { |
231 | uint8_t ch = _getc(indev); |
232 | uint8_t ch = _getc(indev); |
232 | putchar(ch); |
233 | putchar(ch); |
233 | return ch; |
234 | return ch; |
234 | } |
235 | } |
235 | 236 | ||
236 | void klog_update(void) |
237 | void klog_update(void) |
237 | { |
238 | { |
238 | spinlock_lock(&klog_lock); |
239 | spinlock_lock(&klog_lock); |
239 | 240 | ||
240 | if (klog_inited && event_is_subscribed(EVENT_KLOG) && klog_uspace > 0) { |
241 | if (klog_inited && event_is_subscribed(EVENT_KLOG) && klog_uspace > 0) { |
241 | event_notify_3(EVENT_KLOG, klog_start, klog_len, klog_uspace); |
242 | event_notify_3(EVENT_KLOG, klog_start, klog_len, klog_uspace); |
242 | klog_uspace = 0; |
243 | klog_uspace = 0; |
243 | } |
244 | } |
244 | 245 | ||
245 | spinlock_unlock(&klog_lock); |
246 | spinlock_unlock(&klog_lock); |
246 | } |
247 | } |
247 | 248 | ||
248 | void putchar(char c) |
249 | void putchar(const wchar_t ch) |
249 | { |
250 | { |
250 | spinlock_lock(&klog_lock); |
251 | spinlock_lock(&klog_lock); |
251 | 252 | ||
252 | if ((klog_stored > 0) && (stdout) && (stdout->op->write)) { |
253 | if ((klog_stored > 0) && (stdout) && (stdout->op->write)) { |
253 | /* Print charaters stored in kernel log */ |
254 | /* Print charaters stored in kernel log */ |
254 | index_t i; |
255 | index_t i; |
255 | for (i = klog_len - klog_stored; i < klog_len; i++) |
256 | for (i = klog_len - klog_stored; i < klog_len; i++) |
256 | stdout->op->write(stdout, klog[(klog_start + i) % KLOG_SIZE], silent); |
257 | stdout->op->write(stdout, klog[(klog_start + i) % KLOG_SIZE], silent); |
257 | klog_stored = 0; |
258 | klog_stored = 0; |
258 | } |
259 | } |
259 | 260 | ||
260 | /* Store character in the cyclic kernel log */ |
261 | /* Store character in the cyclic kernel log */ |
261 | klog[(klog_start + klog_len) % KLOG_SIZE] = c; |
262 | klog[(klog_start + klog_len) % KLOG_SIZE] = ch; |
262 | if (klog_len < KLOG_SIZE) |
263 | if (klog_len < KLOG_SIZE) |
263 | klog_len++; |
264 | klog_len++; |
264 | else |
265 | else |
265 | klog_start = (klog_start + 1) % KLOG_SIZE; |
266 | klog_start = (klog_start + 1) % KLOG_SIZE; |
266 | 267 | ||
267 | if ((stdout) && (stdout->op->write)) |
268 | if ((stdout) && (stdout->op->write)) |
268 | stdout->op->write(stdout, c, silent); |
269 | stdout->op->write(stdout, ch, silent); |
269 | else { |
270 | else { |
270 | /* The character is just in the kernel log */ |
271 | /* The character is just in the kernel log */ |
271 | if (klog_stored < klog_len) |
272 | if (klog_stored < klog_len) |
272 | klog_stored++; |
273 | klog_stored++; |
273 | } |
274 | } |
274 | 275 | ||
275 | /* The character is stored for uspace */ |
276 | /* The character is stored for uspace */ |
276 | if (klog_uspace < klog_len) |
277 | if (klog_uspace < klog_len) |
277 | klog_uspace++; |
278 | klog_uspace++; |
278 | 279 | ||
279 | /* Check notify uspace to update */ |
280 | /* Check notify uspace to update */ |
280 | bool update; |
281 | bool update; |
281 | if ((klog_uspace > KLOG_LATENCY) || (c == '\n')) |
282 | if ((klog_uspace > KLOG_LATENCY) || (ch == '\n')) |
282 | update = true; |
283 | update = true; |
283 | else |
284 | else |
284 | update = false; |
285 | update = false; |
285 | 286 | ||
286 | spinlock_unlock(&klog_lock); |
287 | spinlock_unlock(&klog_lock); |
287 | 288 | ||
288 | if (update) |
289 | if (update) |
289 | klog_update(); |
290 | klog_update(); |
290 | } |
291 | } |
291 | 292 | ||
292 | /** Print using kernel facility |
293 | /** Print using kernel facility |
293 | * |
294 | * |
294 | * Print to kernel log. |
295 | * Print to kernel log. |
295 | * |
296 | * |
296 | */ |
297 | */ |
297 | unative_t sys_klog(int fd, const void * buf, size_t count) |
298 | unative_t sys_klog(int fd, const void * buf, size_t count) |
298 | { |
299 | { |
299 | char *data; |
300 | char *data; |
300 | int rc; |
301 | int rc; |
301 | 302 | ||
302 | if (count > PAGE_SIZE) |
303 | if (count > PAGE_SIZE) |
303 | return ELIMIT; |
304 | return ELIMIT; |
304 | 305 | ||
305 | if (count > 0) { |
306 | if (count > 0) { |
306 | data = (char *) malloc(count + 1, 0); |
307 | data = (char *) malloc(count + 1, 0); |
307 | if (!data) |
308 | if (!data) |
308 | return ENOMEM; |
309 | return ENOMEM; |
309 | 310 | ||
310 | rc = copy_from_uspace(data, buf, count); |
311 | rc = copy_from_uspace(data, buf, count); |
311 | if (rc) { |
312 | if (rc) { |
312 | free(data); |
313 | free(data); |
313 | return rc; |
314 | return rc; |
314 | } |
315 | } |
315 | data[count] = 0; |
316 | data[count] = 0; |
316 | 317 | ||
317 | printf("%s", data); |
318 | printf("%s", data); |
318 | free(data); |
319 | free(data); |
319 | } else |
320 | } else |
320 | klog_update(); |
321 | klog_update(); |
321 | 322 | ||
322 | return count; |
323 | return count; |
323 | } |
324 | } |
324 | 325 | ||
325 | /** @} |
326 | /** @} |
326 | */ |
327 | */ |
327 | 328 |