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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 <putchar.h> |
50 | #include <atomic.h> |
50 | #include <atomic.h> |
51 | #include <syscall/copy.h> |
51 | #include <syscall/copy.h> |
52 | #include <errno.h> |
52 | #include <errno.h> |
53 | #include <string.h> |
53 | #include <string.h> |
54 | 54 | ||
55 | #define KLOG_SIZE PAGE_SIZE |
55 | #define KLOG_SIZE PAGE_SIZE |
- | 56 | #define KLOG_LENGTH (KLOG_SIZE / sizeof(wchar_t)) |
|
56 | #define KLOG_LATENCY 8 |
57 | #define KLOG_LATENCY 8 |
57 | 58 | ||
58 | /** Kernel log cyclic buffer */ |
59 | /** Kernel log cyclic buffer */ |
59 | static wchar_t klog[KLOG_SIZE] __attribute__ ((aligned (PAGE_SIZE))); |
60 | static wchar_t klog[KLOG_LENGTH] __attribute__ ((aligned (PAGE_SIZE))); |
60 | 61 | ||
61 | /** Kernel log initialized */ |
62 | /** Kernel log initialized */ |
62 | static bool klog_inited = false; |
63 | static bool klog_inited = false; |
63 | /** First kernel log characters */ |
64 | /** First kernel log characters */ |
64 | static index_t klog_start = 0; |
65 | static index_t klog_start = 0; |
65 | /** Number of valid kernel log characters */ |
66 | /** Number of valid kernel log characters */ |
66 | static size_t klog_len = 0; |
67 | static size_t klog_len = 0; |
67 | /** Number of stored (not printed) kernel log characters */ |
68 | /** Number of stored (not printed) kernel log characters */ |
68 | static size_t klog_stored = 0; |
69 | static size_t klog_stored = 0; |
69 | /** Number of stored kernel log characters for uspace */ |
70 | /** Number of stored kernel log characters for uspace */ |
70 | static size_t klog_uspace = 0; |
71 | static size_t klog_uspace = 0; |
71 | 72 | ||
72 | /** Silence output */ |
73 | /** Silence output */ |
73 | bool silent = false; |
74 | bool silent = false; |
74 | 75 | ||
75 | /** Kernel log spinlock */ |
76 | /** Kernel log spinlock */ |
76 | SPINLOCK_INITIALIZE(klog_lock); |
77 | SPINLOCK_INITIALIZE(klog_lock); |
77 | 78 | ||
78 | /** Physical memory area used for klog buffer */ |
79 | /** Physical memory area used for klog buffer */ |
79 | static parea_t klog_parea; |
80 | static parea_t klog_parea; |
80 | 81 | ||
81 | /** Standard input and output character devices */ |
82 | /** Standard input and output character devices */ |
82 | indev_t *stdin = NULL; |
83 | indev_t *stdin = NULL; |
83 | outdev_t *stdout = NULL; |
84 | outdev_t *stdout = NULL; |
84 | 85 | ||
85 | /** Initialize kernel logging facility |
86 | /** Initialize kernel logging facility |
86 | * |
87 | * |
87 | * The shared area contains kernel cyclic buffer. Userspace application may |
88 | * The shared area contains kernel cyclic buffer. Userspace application may |
88 | * be notified on new data with indication of position and size |
89 | * be notified on new data with indication of position and size |
89 | * of the data within the circular buffer. |
90 | * of the data within the circular buffer. |
90 | * |
91 | * |
91 | */ |
92 | */ |
92 | void klog_init(void) |
93 | void klog_init(void) |
93 | { |
94 | { |
94 | void *faddr = (void *) KA2PA(klog); |
95 | void *faddr = (void *) KA2PA(klog); |
95 | 96 | ||
96 | ASSERT((uintptr_t) faddr % FRAME_SIZE == 0); |
97 | ASSERT((uintptr_t) faddr % FRAME_SIZE == 0); |
97 | ASSERT(KLOG_SIZE % FRAME_SIZE == 0); |
98 | ASSERT(KLOG_SIZE % FRAME_SIZE == 0); |
98 | 99 | ||
99 | klog_parea.pbase = (uintptr_t) faddr; |
100 | klog_parea.pbase = (uintptr_t) faddr; |
100 | klog_parea.frames = SIZE2FRAMES(sizeof(klog)); |
101 | klog_parea.frames = SIZE2FRAMES(sizeof(klog)); |
101 | ddi_parea_register(&klog_parea); |
102 | ddi_parea_register(&klog_parea); |
102 | 103 | ||
103 | sysinfo_set_item_val("klog.faddr", NULL, (unative_t) faddr); |
104 | sysinfo_set_item_val("klog.faddr", NULL, (unative_t) faddr); |
104 | sysinfo_set_item_val("klog.pages", NULL, SIZE2FRAMES(sizeof(klog))); |
105 | sysinfo_set_item_val("klog.pages", NULL, SIZE2FRAMES(sizeof(klog))); |
105 | 106 | ||
106 | spinlock_lock(&klog_lock); |
107 | spinlock_lock(&klog_lock); |
107 | klog_inited = true; |
108 | klog_inited = true; |
108 | spinlock_unlock(&klog_lock); |
109 | spinlock_unlock(&klog_lock); |
109 | } |
110 | } |
110 | 111 | ||
111 | void grab_console(void) |
112 | void grab_console(void) |
112 | { |
113 | { |
113 | silent = false; |
114 | silent = false; |
114 | arch_grab_console(); |
115 | arch_grab_console(); |
115 | } |
116 | } |
116 | 117 | ||
117 | void release_console(void) |
118 | void release_console(void) |
118 | { |
119 | { |
119 | silent = true; |
120 | silent = true; |
120 | arch_release_console(); |
121 | arch_release_console(); |
121 | } |
122 | } |
122 | 123 | ||
123 | /** Tell kernel to get keyboard/console access again */ |
124 | /** Tell kernel to get keyboard/console access again */ |
124 | unative_t sys_debug_enable_console(void) |
125 | unative_t sys_debug_enable_console(void) |
125 | { |
126 | { |
126 | #ifdef CONFIG_KCONSOLE |
127 | #ifdef CONFIG_KCONSOLE |
127 | grab_console(); |
128 | grab_console(); |
128 | return true; |
129 | return true; |
129 | #else |
130 | #else |
130 | return false; |
131 | return false; |
131 | #endif |
132 | #endif |
132 | } |
133 | } |
133 | 134 | ||
134 | /** Tell kernel to relinquish keyboard/console access */ |
135 | /** Tell kernel to relinquish keyboard/console access */ |
135 | unative_t sys_debug_disable_console(void) |
136 | unative_t sys_debug_disable_console(void) |
136 | { |
137 | { |
137 | release_console(); |
138 | release_console(); |
138 | return true; |
139 | return true; |
139 | } |
140 | } |
140 | 141 | ||
141 | bool check_poll(indev_t *indev) |
142 | bool check_poll(indev_t *indev) |
142 | { |
143 | { |
143 | if (indev == NULL) |
144 | if (indev == NULL) |
144 | return false; |
145 | return false; |
145 | 146 | ||
146 | if (indev->op == NULL) |
147 | if (indev->op == NULL) |
147 | return false; |
148 | return false; |
148 | 149 | ||
149 | return (indev->op->poll != NULL); |
150 | return (indev->op->poll != NULL); |
150 | } |
151 | } |
151 | 152 | ||
152 | /** Get character from input character device. Do not echo character. |
153 | /** Get character from input character device. Do not echo character. |
153 | * |
154 | * |
154 | * @param indev Input character device. |
155 | * @param indev Input character device. |
155 | * @return Character read. |
156 | * @return Character read. |
156 | * |
157 | * |
157 | */ |
158 | */ |
158 | wchar_t _getc(indev_t *indev) |
159 | wchar_t _getc(indev_t *indev) |
159 | { |
160 | { |
160 | if (atomic_get(&haltstate)) { |
161 | if (atomic_get(&haltstate)) { |
161 | /* If we are here, we are hopefully on the processor that |
162 | /* If we are here, we are hopefully on the processor that |
162 | * issued the 'halt' command, so proceed to read the character |
163 | * issued the 'halt' command, so proceed to read the character |
163 | * directly from input |
164 | * directly from input |
164 | */ |
165 | */ |
165 | if (check_poll(indev)) |
166 | if (check_poll(indev)) |
166 | return indev->op->poll(indev); |
167 | return indev->op->poll(indev); |
167 | 168 | ||
168 | /* No other way of interacting with user */ |
169 | /* No other way of interacting with user */ |
169 | interrupts_disable(); |
170 | interrupts_disable(); |
170 | 171 | ||
171 | if (CPU) |
172 | if (CPU) |
172 | printf("cpu%u: ", CPU->id); |
173 | printf("cpu%u: ", CPU->id); |
173 | else |
174 | else |
174 | printf("cpu: "); |
175 | printf("cpu: "); |
175 | printf("halted (no polling input)\n"); |
176 | printf("halted (no polling input)\n"); |
176 | cpu_halt(); |
177 | cpu_halt(); |
177 | } |
178 | } |
178 | 179 | ||
179 | waitq_sleep(&indev->wq); |
180 | waitq_sleep(&indev->wq); |
180 | ipl_t ipl = interrupts_disable(); |
181 | ipl_t ipl = interrupts_disable(); |
181 | spinlock_lock(&indev->lock); |
182 | spinlock_lock(&indev->lock); |
182 | wchar_t ch = indev->buffer[(indev->index - indev->counter) % INDEV_BUFLEN]; |
183 | wchar_t ch = indev->buffer[(indev->index - indev->counter) % INDEV_BUFLEN]; |
183 | indev->counter--; |
184 | indev->counter--; |
184 | spinlock_unlock(&indev->lock); |
185 | spinlock_unlock(&indev->lock); |
185 | interrupts_restore(ipl); |
186 | interrupts_restore(ipl); |
186 | 187 | ||
187 | return ch; |
188 | return ch; |
188 | } |
189 | } |
189 | 190 | ||
190 | /** Get string from input character device. |
191 | /** Get string from input character device. |
191 | * |
192 | * |
192 | * Read characters from input character device until first occurrence |
193 | * Read characters from input character device until first occurrence |
193 | * of newline character. |
194 | * of newline character. |
194 | * |
195 | * |
195 | * @param indev Input character device. |
196 | * @param indev Input character device. |
196 | * @param buf Buffer where to store string terminated by NULL. |
197 | * @param buf Buffer where to store string terminated by NULL. |
197 | * @param buflen Size of the buffer. |
198 | * @param buflen Size of the buffer. |
198 | * |
199 | * |
199 | * @return Number of characters read. |
200 | * @return Number of characters read. |
200 | * |
201 | * |
201 | */ |
202 | */ |
202 | count_t gets(indev_t *indev, char *buf, size_t buflen) |
203 | count_t gets(indev_t *indev, char *buf, size_t buflen) |
203 | { |
204 | { |
204 | size_t offset = 0; |
205 | size_t offset = 0; |
205 | count_t count = 0; |
206 | count_t count = 0; |
206 | buf[offset] = 0; |
207 | buf[offset] = 0; |
207 | 208 | ||
208 | wchar_t ch; |
209 | wchar_t ch; |
209 | while ((ch = _getc(indev)) != '\n') { |
210 | while ((ch = _getc(indev)) != '\n') { |
210 | if (ch == '\b') { |
211 | if (ch == '\b') { |
211 | if (count > 0) { |
212 | if (count > 0) { |
212 | /* Space, backspace, space */ |
213 | /* Space, backspace, space */ |
213 | putchar('\b'); |
214 | putchar('\b'); |
214 | putchar(' '); |
215 | putchar(' '); |
215 | putchar('\b'); |
216 | putchar('\b'); |
216 | 217 | ||
217 | count--; |
218 | count--; |
218 | offset = str_lsize(buf, count); |
219 | offset = str_lsize(buf, count); |
219 | buf[offset] = 0; |
220 | buf[offset] = 0; |
220 | } |
221 | } |
221 | } |
222 | } |
222 | if (chr_encode(ch, buf, &offset, buflen - 1) == EOK) { |
223 | if (chr_encode(ch, buf, &offset, buflen - 1) == EOK) { |
223 | putchar(ch); |
224 | putchar(ch); |
224 | count++; |
225 | count++; |
225 | buf[offset] = 0; |
226 | buf[offset] = 0; |
226 | } |
227 | } |
227 | } |
228 | } |
228 | 229 | ||
229 | return count; |
230 | return count; |
230 | } |
231 | } |
231 | 232 | ||
232 | /** Get character from input device & echo it to screen */ |
233 | /** Get character from input device & echo it to screen */ |
233 | wchar_t getc(indev_t *indev) |
234 | wchar_t getc(indev_t *indev) |
234 | { |
235 | { |
235 | wchar_t ch = _getc(indev); |
236 | wchar_t ch = _getc(indev); |
236 | putchar(ch); |
237 | putchar(ch); |
237 | return ch; |
238 | return ch; |
238 | } |
239 | } |
239 | 240 | ||
240 | void klog_update(void) |
241 | void klog_update(void) |
241 | { |
242 | { |
242 | spinlock_lock(&klog_lock); |
243 | spinlock_lock(&klog_lock); |
243 | 244 | ||
244 | if ((klog_inited) && (event_is_subscribed(EVENT_KLOG)) && (klog_uspace > 0)) { |
245 | if ((klog_inited) && (event_is_subscribed(EVENT_KLOG)) && (klog_uspace > 0)) { |
245 | event_notify_3(EVENT_KLOG, klog_start, klog_len, klog_uspace); |
246 | event_notify_3(EVENT_KLOG, klog_start, klog_len, klog_uspace); |
246 | klog_uspace = 0; |
247 | klog_uspace = 0; |
247 | } |
248 | } |
248 | 249 | ||
249 | spinlock_unlock(&klog_lock); |
250 | spinlock_unlock(&klog_lock); |
250 | } |
251 | } |
251 | 252 | ||
252 | void putchar(const wchar_t ch) |
253 | void putchar(const wchar_t ch) |
253 | { |
254 | { |
254 | spinlock_lock(&klog_lock); |
255 | spinlock_lock(&klog_lock); |
255 | 256 | ||
256 | if ((klog_stored > 0) && (stdout) && (stdout->op->write)) { |
257 | if ((klog_stored > 0) && (stdout) && (stdout->op->write)) { |
257 | /* Print charaters stored in kernel log */ |
258 | /* Print charaters stored in kernel log */ |
258 | index_t i; |
259 | index_t i; |
259 | for (i = klog_len - klog_stored; i < klog_len; i++) |
260 | for (i = klog_len - klog_stored; i < klog_len; i++) |
260 | stdout->op->write(stdout, klog[(klog_start + i) % KLOG_SIZE], silent); |
261 | stdout->op->write(stdout, klog[(klog_start + i) % KLOG_LENGTH], silent); |
261 | klog_stored = 0; |
262 | klog_stored = 0; |
262 | } |
263 | } |
263 | 264 | ||
264 | /* Store character in the cyclic kernel log */ |
265 | /* Store character in the cyclic kernel log */ |
265 | klog[(klog_start + klog_len) % KLOG_SIZE] = ch; |
266 | klog[(klog_start + klog_len) % KLOG_LENGTH] = ch; |
266 | if (klog_len < KLOG_SIZE) |
267 | if (klog_len < KLOG_LENGTH) |
267 | klog_len++; |
268 | klog_len++; |
268 | else |
269 | else |
269 | klog_start = (klog_start + 1) % KLOG_SIZE; |
270 | klog_start = (klog_start + 1) % KLOG_LENGTH; |
270 | 271 | ||
271 | if ((stdout) && (stdout->op->write)) |
272 | if ((stdout) && (stdout->op->write)) |
272 | stdout->op->write(stdout, ch, silent); |
273 | stdout->op->write(stdout, ch, silent); |
273 | else { |
274 | else { |
274 | /* The character is just in the kernel log */ |
275 | /* The character is just in the kernel log */ |
275 | if (klog_stored < klog_len) |
276 | if (klog_stored < klog_len) |
276 | klog_stored++; |
277 | klog_stored++; |
277 | } |
278 | } |
278 | 279 | ||
279 | /* The character is stored for uspace */ |
280 | /* The character is stored for uspace */ |
280 | if (klog_uspace < klog_len) |
281 | if (klog_uspace < klog_len) |
281 | klog_uspace++; |
282 | klog_uspace++; |
282 | 283 | ||
283 | /* Check notify uspace to update */ |
284 | /* Check notify uspace to update */ |
284 | bool update; |
285 | bool update; |
285 | if ((klog_uspace > KLOG_LATENCY) || (ch == '\n')) |
286 | if ((klog_uspace > KLOG_LATENCY) || (ch == '\n')) |
286 | update = true; |
287 | update = true; |
287 | else |
288 | else |
288 | update = false; |
289 | update = false; |
289 | 290 | ||
290 | spinlock_unlock(&klog_lock); |
291 | spinlock_unlock(&klog_lock); |
291 | 292 | ||
292 | if (update) |
293 | if (update) |
293 | klog_update(); |
294 | klog_update(); |
294 | } |
295 | } |
295 | 296 | ||
296 | /** Print using kernel facility |
297 | /** Print using kernel facility |
297 | * |
298 | * |
298 | * Print to kernel log. |
299 | * Print to kernel log. |
299 | * |
300 | * |
300 | */ |
301 | */ |
301 | unative_t sys_klog(int fd, const void *buf, size_t size) |
302 | unative_t sys_klog(int fd, const void *buf, size_t size) |
302 | { |
303 | { |
303 | char *data; |
304 | char *data; |
304 | int rc; |
305 | int rc; |
305 | 306 | ||
306 | if (size > PAGE_SIZE) |
307 | if (size > PAGE_SIZE) |
307 | return ELIMIT; |
308 | return ELIMIT; |
308 | 309 | ||
309 | if (size > 0) { |
310 | if (size > 0) { |
310 | data = (char *) malloc(size + 1, 0); |
311 | data = (char *) malloc(size + 1, 0); |
311 | if (!data) |
312 | if (!data) |
312 | return ENOMEM; |
313 | return ENOMEM; |
313 | 314 | ||
314 | rc = copy_from_uspace(data, buf, size); |
315 | rc = copy_from_uspace(data, buf, size); |
315 | if (rc) { |
316 | if (rc) { |
316 | free(data); |
317 | free(data); |
317 | return rc; |
318 | return rc; |
318 | } |
319 | } |
319 | data[size] = 0; |
320 | data[size] = 0; |
320 | 321 | ||
321 | printf("%s", data); |
322 | printf("%s", data); |
322 | free(data); |
323 | free(data); |
323 | } else |
324 | } else |
324 | klog_update(); |
325 | klog_update(); |
325 | 326 | ||
326 | return size; |
327 | return size; |
327 | } |
328 | } |
328 | 329 | ||
329 | /** @} |
330 | /** @} |
330 | */ |
331 | */ |
331 | 332 |