1 /* SPDX-License-Identifier: MIT */ 2 /* 3 * Copyright © 2014-2019 Intel Corporation 4 */ 5 6 #ifndef _INTEL_GUC_LOG_H_ 7 #define _INTEL_GUC_LOG_H_ 8 9 #include <linux/mutex.h> 10 #include <linux/relay.h> 11 #include <linux/workqueue.h> 12 13 #include "intel_guc_fwif.h" 14 #include "i915_gem.h" 15 16 struct intel_guc; 17 18 #if defined(CONFIG_DRM_I915_DEBUG_GUC) 19 #define CRASH_BUFFER_SIZE SZ_2M 20 #define DEBUG_BUFFER_SIZE SZ_16M 21 #define CAPTURE_BUFFER_SIZE SZ_4M 22 #elif defined(CONFIG_DRM_I915_DEBUG_GEM) 23 #define CRASH_BUFFER_SIZE SZ_1M 24 #define DEBUG_BUFFER_SIZE SZ_2M 25 #define CAPTURE_BUFFER_SIZE SZ_1M 26 #else 27 #define CRASH_BUFFER_SIZE SZ_8K 28 #define DEBUG_BUFFER_SIZE SZ_64K 29 #define CAPTURE_BUFFER_SIZE SZ_16K 30 #endif 31 32 /* 33 * While we're using plain log level in i915, GuC controls are much more... 34 * "elaborate"? We have a couple of bits for verbosity, separate bit for actual 35 * log enabling, and separate bit for default logging - which "conveniently" 36 * ignores the enable bit. 37 */ 38 #define GUC_LOG_LEVEL_DISABLED 0 39 #define GUC_LOG_LEVEL_NON_VERBOSE 1 40 #define GUC_LOG_LEVEL_IS_ENABLED(x) ((x) > GUC_LOG_LEVEL_DISABLED) 41 #define GUC_LOG_LEVEL_IS_VERBOSE(x) ((x) > GUC_LOG_LEVEL_NON_VERBOSE) 42 #define GUC_LOG_LEVEL_TO_VERBOSITY(x) ({ \ 43 typeof(x) _x = (x); \ 44 GUC_LOG_LEVEL_IS_VERBOSE(_x) ? _x - 2 : 0; \ 45 }) 46 #define GUC_VERBOSITY_TO_LOG_LEVEL(x) ((x) + 2) 47 #define GUC_LOG_LEVEL_MAX GUC_VERBOSITY_TO_LOG_LEVEL(GUC_LOG_VERBOSITY_MAX) 48 49 struct intel_guc_log { 50 u32 level; 51 struct i915_vma *vma; 52 struct { 53 void *buf_addr; 54 bool started; 55 struct work_struct flush_work; 56 struct rchan *channel; 57 struct mutex lock; 58 u32 full_count; 59 } relay; 60 /* logging related stats */ 61 struct { 62 u32 sampled_overflow; 63 u32 overflow; 64 u32 flush; 65 } stats[GUC_MAX_LOG_BUFFER]; 66 }; 67 68 void intel_guc_log_init_early(struct intel_guc_log *log); 69 int intel_guc_log_create(struct intel_guc_log *log); 70 void intel_guc_log_destroy(struct intel_guc_log *log); 71 72 int intel_guc_log_set_level(struct intel_guc_log *log, u32 level); 73 bool intel_guc_log_relay_created(const struct intel_guc_log *log); 74 int intel_guc_log_relay_open(struct intel_guc_log *log); 75 int intel_guc_log_relay_start(struct intel_guc_log *log); 76 void intel_guc_log_relay_flush(struct intel_guc_log *log); 77 void intel_guc_log_relay_close(struct intel_guc_log *log); 78 79 void intel_guc_log_handle_flush_event(struct intel_guc_log *log); 80 81 static inline u32 intel_guc_log_get_level(struct intel_guc_log *log) 82 { 83 return log->level; 84 } 85 86 void intel_guc_log_info(struct intel_guc_log *log, struct drm_printer *p); 87 int intel_guc_log_dump(struct intel_guc_log *log, struct drm_printer *p, 88 bool dump_load_err); 89 90 #endif 91