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 #ifdef CONFIG_DRM_I915_DEBUG_GUC 19 #define CRASH_BUFFER_SIZE SZ_2M 20 #define DPC_BUFFER_SIZE SZ_8M 21 #define ISR_BUFFER_SIZE SZ_8M 22 #else 23 #define CRASH_BUFFER_SIZE SZ_8K 24 #define DPC_BUFFER_SIZE SZ_32K 25 #define ISR_BUFFER_SIZE SZ_32K 26 #endif 27 28 /* 29 * While we're using plain log level in i915, GuC controls are much more... 30 * "elaborate"? We have a couple of bits for verbosity, separate bit for actual 31 * log enabling, and separate bit for default logging - which "conveniently" 32 * ignores the enable bit. 33 */ 34 #define GUC_LOG_LEVEL_DISABLED 0 35 #define GUC_LOG_LEVEL_NON_VERBOSE 1 36 #define GUC_LOG_LEVEL_IS_ENABLED(x) ((x) > GUC_LOG_LEVEL_DISABLED) 37 #define GUC_LOG_LEVEL_IS_VERBOSE(x) ((x) > GUC_LOG_LEVEL_NON_VERBOSE) 38 #define GUC_LOG_LEVEL_TO_VERBOSITY(x) ({ \ 39 typeof(x) _x = (x); \ 40 GUC_LOG_LEVEL_IS_VERBOSE(_x) ? _x - 2 : 0; \ 41 }) 42 #define GUC_VERBOSITY_TO_LOG_LEVEL(x) ((x) + 2) 43 #define GUC_LOG_LEVEL_MAX GUC_VERBOSITY_TO_LOG_LEVEL(GUC_LOG_VERBOSITY_MAX) 44 45 struct intel_guc_log { 46 u32 level; 47 struct i915_vma *vma; 48 struct { 49 void *buf_addr; 50 struct work_struct flush_work; 51 struct rchan *channel; 52 struct mutex lock; 53 u32 full_count; 54 } relay; 55 /* logging related stats */ 56 struct { 57 u32 sampled_overflow; 58 u32 overflow; 59 u32 flush; 60 } stats[GUC_MAX_LOG_BUFFER]; 61 }; 62 63 void intel_guc_log_init_early(struct intel_guc_log *log); 64 int intel_guc_log_create(struct intel_guc_log *log); 65 void intel_guc_log_destroy(struct intel_guc_log *log); 66 67 int intel_guc_log_set_level(struct intel_guc_log *log, u32 level); 68 bool intel_guc_log_relay_enabled(const struct intel_guc_log *log); 69 int intel_guc_log_relay_open(struct intel_guc_log *log); 70 void intel_guc_log_relay_flush(struct intel_guc_log *log); 71 void intel_guc_log_relay_close(struct intel_guc_log *log); 72 73 void intel_guc_log_handle_flush_event(struct intel_guc_log *log); 74 75 static inline u32 intel_guc_log_get_level(struct intel_guc_log *log) 76 { 77 return log->level; 78 } 79 80 #endif 81