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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
16struct 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
45struct 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
64void intel_guc_log_init_early(struct intel_guc_log *log);
65int intel_guc_log_create(struct intel_guc_log *log);
66void intel_guc_log_destroy(struct intel_guc_log *log);
67
68int intel_guc_log_set_level(struct intel_guc_log *log, u32 level);
69bool intel_guc_log_relay_created(const struct intel_guc_log *log);
70int intel_guc_log_relay_open(struct intel_guc_log *log);
71int intel_guc_log_relay_start(struct intel_guc_log *log);
72void intel_guc_log_relay_flush(struct intel_guc_log *log);
73void intel_guc_log_relay_close(struct intel_guc_log *log);
74
75void intel_guc_log_handle_flush_event(struct intel_guc_log *log);
76
77static inline u32 intel_guc_log_get_level(struct intel_guc_log *log)
78{
79 return log->level;
80}
81
82void intel_guc_log_info(struct intel_guc_log *log, struct drm_printer *p);
83int intel_guc_log_dump(struct intel_guc_log *log, struct drm_printer *p,
84 bool dump_load_err);
85
86#endif