1 /* 2 * Copyright © 2014-2017 Intel Corporation 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 (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21 * IN THE SOFTWARE. 22 * 23 */ 24 25 #ifndef _INTEL_GUC_LOG_H_ 26 #define _INTEL_GUC_LOG_H_ 27 28 #include <linux/mutex.h> 29 #include <linux/relay.h> 30 #include <linux/workqueue.h> 31 32 #include "intel_guc_fwif.h" 33 #include "i915_gem.h" 34 35 struct intel_guc; 36 37 #ifdef CONFIG_DRM_I915_DEBUG_GUC 38 #define CRASH_BUFFER_SIZE SZ_2M 39 #define DPC_BUFFER_SIZE SZ_8M 40 #define ISR_BUFFER_SIZE SZ_8M 41 #else 42 #define CRASH_BUFFER_SIZE SZ_8K 43 #define DPC_BUFFER_SIZE SZ_32K 44 #define ISR_BUFFER_SIZE SZ_32K 45 #endif 46 47 /* 48 * While we're using plain log level in i915, GuC controls are much more... 49 * "elaborate"? We have a couple of bits for verbosity, separate bit for actual 50 * log enabling, and separate bit for default logging - which "conveniently" 51 * ignores the enable bit. 52 */ 53 #define GUC_LOG_LEVEL_DISABLED 0 54 #define GUC_LOG_LEVEL_NON_VERBOSE 1 55 #define GUC_LOG_LEVEL_IS_ENABLED(x) ((x) > GUC_LOG_LEVEL_DISABLED) 56 #define GUC_LOG_LEVEL_IS_VERBOSE(x) ((x) > GUC_LOG_LEVEL_NON_VERBOSE) 57 #define GUC_LOG_LEVEL_TO_VERBOSITY(x) ({ \ 58 typeof(x) _x = (x); \ 59 GUC_LOG_LEVEL_IS_VERBOSE(_x) ? _x - 2 : 0; \ 60 }) 61 #define GUC_VERBOSITY_TO_LOG_LEVEL(x) ((x) + 2) 62 #define GUC_LOG_LEVEL_MAX GUC_VERBOSITY_TO_LOG_LEVEL(GUC_LOG_VERBOSITY_MAX) 63 64 struct intel_guc_log { 65 u32 level; 66 struct i915_vma *vma; 67 struct { 68 void *buf_addr; 69 struct work_struct flush_work; 70 struct rchan *channel; 71 struct mutex lock; 72 u32 full_count; 73 } relay; 74 /* logging related stats */ 75 struct { 76 u32 sampled_overflow; 77 u32 overflow; 78 u32 flush; 79 } stats[GUC_MAX_LOG_BUFFER]; 80 }; 81 82 void intel_guc_log_init_early(struct intel_guc_log *log); 83 int intel_guc_log_create(struct intel_guc_log *log); 84 void intel_guc_log_destroy(struct intel_guc_log *log); 85 86 int intel_guc_log_set_level(struct intel_guc_log *log, u32 level); 87 bool intel_guc_log_relay_enabled(const struct intel_guc_log *log); 88 int intel_guc_log_relay_open(struct intel_guc_log *log); 89 void intel_guc_log_relay_flush(struct intel_guc_log *log); 90 void intel_guc_log_relay_close(struct intel_guc_log *log); 91 92 void intel_guc_log_handle_flush_event(struct intel_guc_log *log); 93 94 static inline u32 intel_guc_log_get_level(struct intel_guc_log *log) 95 { 96 return log->level; 97 } 98 99 #endif 100