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