drivers/gpu/drm/i915/gt/uc/intel_guc_log.h

   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                 bool started;
  51                 struct work_struct flush_work;
  52                 struct rchan *channel;
  53                 struct mutex lock;
  54                 u32 full_count;
  55         } relay;
  56         /* logging related stats */
  57         struct {
  58                 u32 sampled_overflow;
  59                 u32 overflow;
  60                 u32 flush;
  61         } stats[GUC_MAX_LOG_BUFFER];
  62 };
  63
  64 void intel_guc_log_init_early(struct intel_guc_log *log);
  65 int intel_guc_log_create(struct intel_guc_log *log);
  66 void intel_guc_log_destroy(struct intel_guc_log *log);
  67
  68 int intel_guc_log_set_level(struct intel_guc_log *log, u32 level);
  69 bool intel_guc_log_relay_created(const struct intel_guc_log *log);
  70 int intel_guc_log_relay_open(struct intel_guc_log *log);
  71 int intel_guc_log_relay_start(struct intel_guc_log *log);
  72 void intel_guc_log_relay_flush(struct intel_guc_log *log);
  73 void intel_guc_log_relay_close(struct intel_guc_log *log);
  74
  75 void intel_guc_log_handle_flush_event(struct intel_guc_log *log);
  76
  77 static inline u32 intel_guc_log_get_level(struct intel_guc_log *log)
  78 {
  79         return log->level;
  80 }
  81
  82 #endif