1 /* SPDX-License-Identifier: MIT */
3 * Copyright © 2014-2019 Intel Corporation
6 #ifndef _INTEL_GUC_LOG_H_
7 #define _INTEL_GUC_LOG_H_
9 #include <linux/mutex.h>
10 #include <linux/relay.h>
11 #include <linux/workqueue.h>
13 #include "intel_guc_fwif.h"
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
23 #define CRASH_BUFFER_SIZE SZ_8K
24 #define DPC_BUFFER_SIZE SZ_32K
25 #define ISR_BUFFER_SIZE SZ_32K
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.
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) ({ \
40 GUC_LOG_LEVEL_IS_VERBOSE(_x) ? _x - 2 : 0; \
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)
45 struct intel_guc_log {
51 struct work_struct flush_work;
52 struct rchan *channel;
56 /* logging related stats */
61 } stats[GUC_MAX_LOG_BUFFER];
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);
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);
75 void intel_guc_log_handle_flush_event(struct intel_guc_log *log);
77 static inline u32 intel_guc_log_get_level(struct intel_guc_log *log)
82 void intel_guc_log_info(struct intel_guc_log *log, struct drm_printer *p);
83 int intel_guc_log_dump(struct intel_guc_log *log, struct drm_printer *p,