1 /* 2 * Copyright (C) 2016 Red Hat 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: 23 * Rob Clark <robdclark@gmail.com> 24 */ 25 26 #ifndef DRM_PRINT_H_ 27 #define DRM_PRINT_H_ 28 29 #include <linux/compiler.h> 30 #include <linux/printk.h> 31 #include <linux/device.h> 32 #include <linux/dynamic_debug.h> 33 34 #include <drm/drm.h> 35 36 struct debugfs_regset32; 37 struct drm_device; 38 struct seq_file; 39 40 /* Do *not* use outside of drm_print.[ch]! */ 41 extern unsigned long __drm_debug; 42 43 /** 44 * DOC: print 45 * 46 * A simple wrapper for dev_printk(), seq_printf(), etc. Allows same 47 * debug code to be used for both debugfs and printk logging. 48 * 49 * For example:: 50 * 51 * void log_some_info(struct drm_printer *p) 52 * { 53 * drm_printf(p, "foo=%d\n", foo); 54 * drm_printf(p, "bar=%d\n", bar); 55 * } 56 * 57 * #ifdef CONFIG_DEBUG_FS 58 * void debugfs_show(struct seq_file *f) 59 * { 60 * struct drm_printer p = drm_seq_file_printer(f); 61 * log_some_info(&p); 62 * } 63 * #endif 64 * 65 * void some_other_function(...) 66 * { 67 * struct drm_printer p = drm_info_printer(drm->dev); 68 * log_some_info(&p); 69 * } 70 */ 71 72 /** 73 * enum drm_debug_category - The DRM debug categories 74 * 75 * Each of the DRM debug logging macros use a specific category, and the logging 76 * is filtered by the drm.debug module parameter. This enum specifies the values 77 * for the interface. 78 * 79 * Each DRM_DEBUG_<CATEGORY> macro logs to DRM_UT_<CATEGORY> category, except 80 * DRM_DEBUG() logs to DRM_UT_CORE. 81 * 82 * Enabling verbose debug messages is done through the drm.debug parameter, each 83 * category being enabled by a bit: 84 * 85 * - drm.debug=0x1 will enable CORE messages 86 * - drm.debug=0x2 will enable DRIVER messages 87 * - drm.debug=0x3 will enable CORE and DRIVER messages 88 * - ... 89 * - drm.debug=0x1ff will enable all messages 90 * 91 * An interesting feature is that it's possible to enable verbose logging at 92 * run-time by echoing the debug value in its sysfs node:: 93 * 94 * # echo 0xf > /sys/module/drm/parameters/debug 95 * 96 */ 97 enum drm_debug_category { 98 /* These names must match those in DYNAMIC_DEBUG_CLASSBITS */ 99 /** 100 * @DRM_UT_CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c, 101 * drm_memory.c, ... 102 */ 103 DRM_UT_CORE, 104 /** 105 * @DRM_UT_DRIVER: Used in the vendor specific part of the driver: i915, 106 * radeon, ... macro. 107 */ 108 DRM_UT_DRIVER, 109 /** 110 * @DRM_UT_KMS: Used in the modesetting code. 111 */ 112 DRM_UT_KMS, 113 /** 114 * @DRM_UT_PRIME: Used in the prime code. 115 */ 116 DRM_UT_PRIME, 117 /** 118 * @DRM_UT_ATOMIC: Used in the atomic code. 119 */ 120 DRM_UT_ATOMIC, 121 /** 122 * @DRM_UT_VBL: Used for verbose debug message in the vblank code. 123 */ 124 DRM_UT_VBL, 125 /** 126 * @DRM_UT_STATE: Used for verbose atomic state debugging. 127 */ 128 DRM_UT_STATE, 129 /** 130 * @DRM_UT_LEASE: Used in the lease code. 131 */ 132 DRM_UT_LEASE, 133 /** 134 * @DRM_UT_DP: Used in the DP code. 135 */ 136 DRM_UT_DP, 137 /** 138 * @DRM_UT_DRMRES: Used in the drm managed resources code. 139 */ 140 DRM_UT_DRMRES 141 }; 142 143 static inline bool drm_debug_enabled_raw(enum drm_debug_category category) 144 { 145 return unlikely(__drm_debug & BIT(category)); 146 } 147 148 #define drm_debug_enabled_instrumented(category) \ 149 ({ \ 150 pr_debug("todo: is this frequent enough to optimize ?\n"); \ 151 drm_debug_enabled_raw(category); \ 152 }) 153 154 #if defined(CONFIG_DRM_USE_DYNAMIC_DEBUG) 155 /* 156 * the drm.debug API uses dyndbg, so each drm_*dbg macro/callsite gets 157 * a descriptor, and only enabled callsites are reachable. They use 158 * the private macro to avoid re-testing the enable-bit. 159 */ 160 #define __drm_debug_enabled(category) true 161 #define drm_debug_enabled(category) drm_debug_enabled_instrumented(category) 162 #else 163 #define __drm_debug_enabled(category) drm_debug_enabled_raw(category) 164 #define drm_debug_enabled(category) drm_debug_enabled_raw(category) 165 #endif 166 167 /** 168 * struct drm_printer - drm output "stream" 169 * 170 * Do not use struct members directly. Use drm_printer_seq_file(), 171 * drm_printer_info(), etc to initialize. And drm_printf() for output. 172 */ 173 struct drm_printer { 174 /* private: */ 175 void (*printfn)(struct drm_printer *p, struct va_format *vaf); 176 void (*puts)(struct drm_printer *p, const char *str); 177 void *arg; 178 const char *prefix; 179 enum drm_debug_category category; 180 }; 181 182 void __drm_printfn_coredump(struct drm_printer *p, struct va_format *vaf); 183 void __drm_puts_coredump(struct drm_printer *p, const char *str); 184 void __drm_printfn_seq_file(struct drm_printer *p, struct va_format *vaf); 185 void __drm_puts_seq_file(struct drm_printer *p, const char *str); 186 void __drm_printfn_info(struct drm_printer *p, struct va_format *vaf); 187 void __drm_printfn_dbg(struct drm_printer *p, struct va_format *vaf); 188 void __drm_printfn_err(struct drm_printer *p, struct va_format *vaf); 189 190 __printf(2, 3) 191 void drm_printf(struct drm_printer *p, const char *f, ...); 192 void drm_puts(struct drm_printer *p, const char *str); 193 void drm_print_regset32(struct drm_printer *p, struct debugfs_regset32 *regset); 194 void drm_print_bits(struct drm_printer *p, unsigned long value, 195 const char * const bits[], unsigned int nbits); 196 197 __printf(2, 0) 198 /** 199 * drm_vprintf - print to a &drm_printer stream 200 * @p: the &drm_printer 201 * @fmt: format string 202 * @va: the va_list 203 */ 204 static inline void 205 drm_vprintf(struct drm_printer *p, const char *fmt, va_list *va) 206 { 207 struct va_format vaf = { .fmt = fmt, .va = va }; 208 209 p->printfn(p, &vaf); 210 } 211 212 /** 213 * drm_printf_indent - Print to a &drm_printer stream with indentation 214 * @printer: DRM printer 215 * @indent: Tab indentation level (max 5) 216 * @fmt: Format string 217 */ 218 #define drm_printf_indent(printer, indent, fmt, ...) \ 219 drm_printf((printer), "%.*s" fmt, (indent), "\t\t\t\t\tX", ##__VA_ARGS__) 220 221 /** 222 * struct drm_print_iterator - local struct used with drm_printer_coredump 223 * @data: Pointer to the devcoredump output buffer 224 * @start: The offset within the buffer to start writing 225 * @remain: The number of bytes to write for this iteration 226 */ 227 struct drm_print_iterator { 228 void *data; 229 ssize_t start; 230 ssize_t remain; 231 /* private: */ 232 ssize_t offset; 233 }; 234 235 /** 236 * drm_coredump_printer - construct a &drm_printer that can output to a buffer 237 * from the read function for devcoredump 238 * @iter: A pointer to a struct drm_print_iterator for the read instance 239 * 240 * This wrapper extends drm_printf() to work with a dev_coredumpm() callback 241 * function. The passed in drm_print_iterator struct contains the buffer 242 * pointer, size and offset as passed in from devcoredump. 243 * 244 * For example:: 245 * 246 * void coredump_read(char *buffer, loff_t offset, size_t count, 247 * void *data, size_t datalen) 248 * { 249 * struct drm_print_iterator iter; 250 * struct drm_printer p; 251 * 252 * iter.data = buffer; 253 * iter.start = offset; 254 * iter.remain = count; 255 * 256 * p = drm_coredump_printer(&iter); 257 * 258 * drm_printf(p, "foo=%d\n", foo); 259 * } 260 * 261 * void makecoredump(...) 262 * { 263 * ... 264 * dev_coredumpm(dev, THIS_MODULE, data, 0, GFP_KERNEL, 265 * coredump_read, ...) 266 * } 267 * 268 * RETURNS: 269 * The &drm_printer object 270 */ 271 static inline struct drm_printer 272 drm_coredump_printer(struct drm_print_iterator *iter) 273 { 274 struct drm_printer p = { 275 .printfn = __drm_printfn_coredump, 276 .puts = __drm_puts_coredump, 277 .arg = iter, 278 }; 279 280 /* Set the internal offset of the iterator to zero */ 281 iter->offset = 0; 282 283 return p; 284 } 285 286 /** 287 * drm_seq_file_printer - construct a &drm_printer that outputs to &seq_file 288 * @f: the &struct seq_file to output to 289 * 290 * RETURNS: 291 * The &drm_printer object 292 */ 293 static inline struct drm_printer drm_seq_file_printer(struct seq_file *f) 294 { 295 struct drm_printer p = { 296 .printfn = __drm_printfn_seq_file, 297 .puts = __drm_puts_seq_file, 298 .arg = f, 299 }; 300 return p; 301 } 302 303 /** 304 * drm_info_printer - construct a &drm_printer that outputs to dev_printk() 305 * @dev: the &struct device pointer 306 * 307 * RETURNS: 308 * The &drm_printer object 309 */ 310 static inline struct drm_printer drm_info_printer(struct device *dev) 311 { 312 struct drm_printer p = { 313 .printfn = __drm_printfn_info, 314 .arg = dev, 315 }; 316 return p; 317 } 318 319 /** 320 * drm_dbg_printer - construct a &drm_printer for drm device specific output 321 * @drm: the &struct drm_device pointer, or NULL 322 * @category: the debug category to use 323 * @prefix: debug output prefix, or NULL for no prefix 324 * 325 * RETURNS: 326 * The &drm_printer object 327 */ 328 static inline struct drm_printer drm_dbg_printer(struct drm_device *drm, 329 enum drm_debug_category category, 330 const char *prefix) 331 { 332 struct drm_printer p = { 333 .printfn = __drm_printfn_dbg, 334 .arg = drm, 335 .prefix = prefix, 336 .category = category, 337 }; 338 return p; 339 } 340 341 /** 342 * drm_err_printer - construct a &drm_printer that outputs to drm_err() 343 * @drm: the &struct drm_device pointer 344 * @prefix: debug output prefix, or NULL for no prefix 345 * 346 * RETURNS: 347 * The &drm_printer object 348 */ 349 static inline struct drm_printer drm_err_printer(struct drm_device *drm, 350 const char *prefix) 351 { 352 struct drm_printer p = { 353 .printfn = __drm_printfn_err, 354 .arg = drm, 355 .prefix = prefix 356 }; 357 return p; 358 } 359 360 /* 361 * struct device based logging 362 * 363 * Prefer drm_device based logging over device or printk based logging. 364 */ 365 366 __printf(3, 4) 367 void drm_dev_printk(const struct device *dev, const char *level, 368 const char *format, ...); 369 struct _ddebug; 370 __printf(4, 5) 371 void __drm_dev_dbg(struct _ddebug *desc, const struct device *dev, 372 enum drm_debug_category category, const char *format, ...); 373 374 /** 375 * DRM_DEV_ERROR() - Error output. 376 * 377 * NOTE: this is deprecated in favor of drm_err() or dev_err(). 378 * 379 * @dev: device pointer 380 * @fmt: printf() like format string. 381 */ 382 #define DRM_DEV_ERROR(dev, fmt, ...) \ 383 drm_dev_printk(dev, KERN_ERR, "*ERROR* " fmt, ##__VA_ARGS__) 384 385 /** 386 * DRM_DEV_ERROR_RATELIMITED() - Rate limited error output. 387 * 388 * NOTE: this is deprecated in favor of drm_err_ratelimited() or 389 * dev_err_ratelimited(). 390 * 391 * @dev: device pointer 392 * @fmt: printf() like format string. 393 * 394 * Like DRM_ERROR() but won't flood the log. 395 */ 396 #define DRM_DEV_ERROR_RATELIMITED(dev, fmt, ...) \ 397 ({ \ 398 static DEFINE_RATELIMIT_STATE(_rs, \ 399 DEFAULT_RATELIMIT_INTERVAL, \ 400 DEFAULT_RATELIMIT_BURST); \ 401 \ 402 if (__ratelimit(&_rs)) \ 403 DRM_DEV_ERROR(dev, fmt, ##__VA_ARGS__); \ 404 }) 405 406 /* NOTE: this is deprecated in favor of drm_info() or dev_info(). */ 407 #define DRM_DEV_INFO(dev, fmt, ...) \ 408 drm_dev_printk(dev, KERN_INFO, fmt, ##__VA_ARGS__) 409 410 /* NOTE: this is deprecated in favor of drm_info_once() or dev_info_once(). */ 411 #define DRM_DEV_INFO_ONCE(dev, fmt, ...) \ 412 ({ \ 413 static bool __print_once __read_mostly; \ 414 if (!__print_once) { \ 415 __print_once = true; \ 416 DRM_DEV_INFO(dev, fmt, ##__VA_ARGS__); \ 417 } \ 418 }) 419 420 #if !defined(CONFIG_DRM_USE_DYNAMIC_DEBUG) 421 #define drm_dev_dbg(dev, cat, fmt, ...) \ 422 __drm_dev_dbg(NULL, dev, cat, fmt, ##__VA_ARGS__) 423 #else 424 #define drm_dev_dbg(dev, cat, fmt, ...) \ 425 _dynamic_func_call_cls(cat, fmt, __drm_dev_dbg, \ 426 dev, cat, fmt, ##__VA_ARGS__) 427 #endif 428 429 /** 430 * DRM_DEV_DEBUG() - Debug output for generic drm code 431 * 432 * NOTE: this is deprecated in favor of drm_dbg_core(). 433 * 434 * @dev: device pointer 435 * @fmt: printf() like format string. 436 */ 437 #define DRM_DEV_DEBUG(dev, fmt, ...) \ 438 drm_dev_dbg(dev, DRM_UT_CORE, fmt, ##__VA_ARGS__) 439 /** 440 * DRM_DEV_DEBUG_DRIVER() - Debug output for vendor specific part of the driver 441 * 442 * NOTE: this is deprecated in favor of drm_dbg() or dev_dbg(). 443 * 444 * @dev: device pointer 445 * @fmt: printf() like format string. 446 */ 447 #define DRM_DEV_DEBUG_DRIVER(dev, fmt, ...) \ 448 drm_dev_dbg(dev, DRM_UT_DRIVER, fmt, ##__VA_ARGS__) 449 /** 450 * DRM_DEV_DEBUG_KMS() - Debug output for modesetting code 451 * 452 * NOTE: this is deprecated in favor of drm_dbg_kms(). 453 * 454 * @dev: device pointer 455 * @fmt: printf() like format string. 456 */ 457 #define DRM_DEV_DEBUG_KMS(dev, fmt, ...) \ 458 drm_dev_dbg(dev, DRM_UT_KMS, fmt, ##__VA_ARGS__) 459 460 /* 461 * struct drm_device based logging 462 * 463 * Prefer drm_device based logging over device or prink based logging. 464 */ 465 466 /* Helper for struct drm_device based logging. */ 467 #define __drm_printk(drm, level, type, fmt, ...) \ 468 dev_##level##type((drm) ? (drm)->dev : NULL, "[drm] " fmt, ##__VA_ARGS__) 469 470 471 #define drm_info(drm, fmt, ...) \ 472 __drm_printk((drm), info,, fmt, ##__VA_ARGS__) 473 474 #define drm_notice(drm, fmt, ...) \ 475 __drm_printk((drm), notice,, fmt, ##__VA_ARGS__) 476 477 #define drm_warn(drm, fmt, ...) \ 478 __drm_printk((drm), warn,, fmt, ##__VA_ARGS__) 479 480 #define drm_err(drm, fmt, ...) \ 481 __drm_printk((drm), err,, "*ERROR* " fmt, ##__VA_ARGS__) 482 483 484 #define drm_info_once(drm, fmt, ...) \ 485 __drm_printk((drm), info, _once, fmt, ##__VA_ARGS__) 486 487 #define drm_notice_once(drm, fmt, ...) \ 488 __drm_printk((drm), notice, _once, fmt, ##__VA_ARGS__) 489 490 #define drm_warn_once(drm, fmt, ...) \ 491 __drm_printk((drm), warn, _once, fmt, ##__VA_ARGS__) 492 493 #define drm_err_once(drm, fmt, ...) \ 494 __drm_printk((drm), err, _once, "*ERROR* " fmt, ##__VA_ARGS__) 495 496 497 #define drm_err_ratelimited(drm, fmt, ...) \ 498 __drm_printk((drm), err, _ratelimited, "*ERROR* " fmt, ##__VA_ARGS__) 499 500 501 #define drm_dbg_core(drm, fmt, ...) \ 502 drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_CORE, fmt, ##__VA_ARGS__) 503 #define drm_dbg_driver(drm, fmt, ...) \ 504 drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_DRIVER, fmt, ##__VA_ARGS__) 505 #define drm_dbg_kms(drm, fmt, ...) \ 506 drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_KMS, fmt, ##__VA_ARGS__) 507 #define drm_dbg_prime(drm, fmt, ...) \ 508 drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_PRIME, fmt, ##__VA_ARGS__) 509 #define drm_dbg_atomic(drm, fmt, ...) \ 510 drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_ATOMIC, fmt, ##__VA_ARGS__) 511 #define drm_dbg_vbl(drm, fmt, ...) \ 512 drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_VBL, fmt, ##__VA_ARGS__) 513 #define drm_dbg_state(drm, fmt, ...) \ 514 drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_STATE, fmt, ##__VA_ARGS__) 515 #define drm_dbg_lease(drm, fmt, ...) \ 516 drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_LEASE, fmt, ##__VA_ARGS__) 517 #define drm_dbg_dp(drm, fmt, ...) \ 518 drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_DP, fmt, ##__VA_ARGS__) 519 #define drm_dbg_drmres(drm, fmt, ...) \ 520 drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_DRMRES, fmt, ##__VA_ARGS__) 521 522 #define drm_dbg(drm, fmt, ...) drm_dbg_driver(drm, fmt, ##__VA_ARGS__) 523 524 /* 525 * printk based logging 526 * 527 * Prefer drm_device based logging over device or prink based logging. 528 */ 529 530 __printf(3, 4) 531 void ___drm_dbg(struct _ddebug *desc, enum drm_debug_category category, const char *format, ...); 532 __printf(1, 2) 533 void __drm_err(const char *format, ...); 534 535 #if !defined(CONFIG_DRM_USE_DYNAMIC_DEBUG) 536 #define __drm_dbg(cat, fmt, ...) ___drm_dbg(NULL, cat, fmt, ##__VA_ARGS__) 537 #else 538 #define __drm_dbg(cat, fmt, ...) \ 539 _dynamic_func_call_cls(cat, fmt, ___drm_dbg, \ 540 cat, fmt, ##__VA_ARGS__) 541 #endif 542 543 /* Macros to make printk easier */ 544 545 #define _DRM_PRINTK(once, level, fmt, ...) \ 546 printk##once(KERN_##level "[" DRM_NAME "] " fmt, ##__VA_ARGS__) 547 548 /* NOTE: this is deprecated in favor of pr_info(). */ 549 #define DRM_INFO(fmt, ...) \ 550 _DRM_PRINTK(, INFO, fmt, ##__VA_ARGS__) 551 /* NOTE: this is deprecated in favor of pr_notice(). */ 552 #define DRM_NOTE(fmt, ...) \ 553 _DRM_PRINTK(, NOTICE, fmt, ##__VA_ARGS__) 554 /* NOTE: this is deprecated in favor of pr_warn(). */ 555 #define DRM_WARN(fmt, ...) \ 556 _DRM_PRINTK(, WARNING, fmt, ##__VA_ARGS__) 557 558 /* NOTE: this is deprecated in favor of pr_info_once(). */ 559 #define DRM_INFO_ONCE(fmt, ...) \ 560 _DRM_PRINTK(_once, INFO, fmt, ##__VA_ARGS__) 561 /* NOTE: this is deprecated in favor of pr_notice_once(). */ 562 #define DRM_NOTE_ONCE(fmt, ...) \ 563 _DRM_PRINTK(_once, NOTICE, fmt, ##__VA_ARGS__) 564 /* NOTE: this is deprecated in favor of pr_warn_once(). */ 565 #define DRM_WARN_ONCE(fmt, ...) \ 566 _DRM_PRINTK(_once, WARNING, fmt, ##__VA_ARGS__) 567 568 /* NOTE: this is deprecated in favor of pr_err(). */ 569 #define DRM_ERROR(fmt, ...) \ 570 __drm_err(fmt, ##__VA_ARGS__) 571 572 /* NOTE: this is deprecated in favor of pr_err_ratelimited(). */ 573 #define DRM_ERROR_RATELIMITED(fmt, ...) \ 574 DRM_DEV_ERROR_RATELIMITED(NULL, fmt, ##__VA_ARGS__) 575 576 /* NOTE: this is deprecated in favor of drm_dbg_core(NULL, ...). */ 577 #define DRM_DEBUG(fmt, ...) \ 578 __drm_dbg(DRM_UT_CORE, fmt, ##__VA_ARGS__) 579 580 /* NOTE: this is deprecated in favor of drm_dbg(NULL, ...). */ 581 #define DRM_DEBUG_DRIVER(fmt, ...) \ 582 __drm_dbg(DRM_UT_DRIVER, fmt, ##__VA_ARGS__) 583 584 /* NOTE: this is deprecated in favor of drm_dbg_kms(NULL, ...). */ 585 #define DRM_DEBUG_KMS(fmt, ...) \ 586 __drm_dbg(DRM_UT_KMS, fmt, ##__VA_ARGS__) 587 588 /* NOTE: this is deprecated in favor of drm_dbg_prime(NULL, ...). */ 589 #define DRM_DEBUG_PRIME(fmt, ...) \ 590 __drm_dbg(DRM_UT_PRIME, fmt, ##__VA_ARGS__) 591 592 /* NOTE: this is deprecated in favor of drm_dbg_atomic(NULL, ...). */ 593 #define DRM_DEBUG_ATOMIC(fmt, ...) \ 594 __drm_dbg(DRM_UT_ATOMIC, fmt, ##__VA_ARGS__) 595 596 /* NOTE: this is deprecated in favor of drm_dbg_vbl(NULL, ...). */ 597 #define DRM_DEBUG_VBL(fmt, ...) \ 598 __drm_dbg(DRM_UT_VBL, fmt, ##__VA_ARGS__) 599 600 /* NOTE: this is deprecated in favor of drm_dbg_lease(NULL, ...). */ 601 #define DRM_DEBUG_LEASE(fmt, ...) \ 602 __drm_dbg(DRM_UT_LEASE, fmt, ##__VA_ARGS__) 603 604 /* NOTE: this is deprecated in favor of drm_dbg_dp(NULL, ...). */ 605 #define DRM_DEBUG_DP(fmt, ...) \ 606 __drm_dbg(DRM_UT_DP, fmt, ## __VA_ARGS__) 607 608 #define __DRM_DEFINE_DBG_RATELIMITED(category, drm, fmt, ...) \ 609 ({ \ 610 static DEFINE_RATELIMIT_STATE(rs_, DEFAULT_RATELIMIT_INTERVAL, DEFAULT_RATELIMIT_BURST);\ 611 const struct drm_device *drm_ = (drm); \ 612 \ 613 if (drm_debug_enabled(DRM_UT_ ## category) && __ratelimit(&rs_)) \ 614 drm_dev_printk(drm_ ? drm_->dev : NULL, KERN_DEBUG, fmt, ## __VA_ARGS__); \ 615 }) 616 617 #define drm_dbg_ratelimited(drm, fmt, ...) \ 618 __DRM_DEFINE_DBG_RATELIMITED(DRIVER, drm, fmt, ## __VA_ARGS__) 619 620 #define drm_dbg_kms_ratelimited(drm, fmt, ...) \ 621 __DRM_DEFINE_DBG_RATELIMITED(KMS, drm, fmt, ## __VA_ARGS__) 622 623 /* 624 * struct drm_device based WARNs 625 * 626 * drm_WARN*() acts like WARN*(), but with the key difference of 627 * using device specific information so that we know from which device 628 * warning is originating from. 629 * 630 * Prefer drm_device based drm_WARN* over regular WARN* 631 */ 632 633 /* Helper for struct drm_device based WARNs */ 634 #define drm_WARN(drm, condition, format, arg...) \ 635 WARN(condition, "%s %s: " format, \ 636 dev_driver_string((drm)->dev), \ 637 dev_name((drm)->dev), ## arg) 638 639 #define drm_WARN_ONCE(drm, condition, format, arg...) \ 640 WARN_ONCE(condition, "%s %s: " format, \ 641 dev_driver_string((drm)->dev), \ 642 dev_name((drm)->dev), ## arg) 643 644 #define drm_WARN_ON(drm, x) \ 645 drm_WARN((drm), (x), "%s", \ 646 "drm_WARN_ON(" __stringify(x) ")") 647 648 #define drm_WARN_ON_ONCE(drm, x) \ 649 drm_WARN_ONCE((drm), (x), "%s", \ 650 "drm_WARN_ON_ONCE(" __stringify(x) ")") 651 652 #endif /* DRM_PRINT_H_ */ 653