cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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intel_guc_log.h (2910B)

      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#if defined(CONFIG_DRM_I915_DEBUG_GUC)
     19#define CRASH_BUFFER_SIZE	SZ_2M
     20#define DEBUG_BUFFER_SIZE	SZ_16M
     21#define CAPTURE_BUFFER_SIZE	SZ_4M
     22#elif defined(CONFIG_DRM_I915_DEBUG_GEM)
     23#define CRASH_BUFFER_SIZE	SZ_1M
     24#define DEBUG_BUFFER_SIZE	SZ_2M
     25#define CAPTURE_BUFFER_SIZE	SZ_1M
     26#else
     27#define CRASH_BUFFER_SIZE	SZ_8K
     28#define DEBUG_BUFFER_SIZE	SZ_64K
     29#define CAPTURE_BUFFER_SIZE	SZ_16K
     30#endif
     31
     32/*
     33 * While we're using plain log level in i915, GuC controls are much more...
     34 * "elaborate"? We have a couple of bits for verbosity, separate bit for actual
     35 * log enabling, and separate bit for default logging - which "conveniently"
     36 * ignores the enable bit.
     37 */
     38#define GUC_LOG_LEVEL_DISABLED		0
     39#define GUC_LOG_LEVEL_NON_VERBOSE	1
     40#define GUC_LOG_LEVEL_IS_ENABLED(x)	((x) > GUC_LOG_LEVEL_DISABLED)
     41#define GUC_LOG_LEVEL_IS_VERBOSE(x)	((x) > GUC_LOG_LEVEL_NON_VERBOSE)
     42#define GUC_LOG_LEVEL_TO_VERBOSITY(x) ({		\
     43	typeof(x) _x = (x);				\
     44	GUC_LOG_LEVEL_IS_VERBOSE(_x) ? _x - 2 : 0;	\
     45})
     46#define GUC_VERBOSITY_TO_LOG_LEVEL(x)	((x) + 2)
     47#define GUC_LOG_LEVEL_MAX GUC_VERBOSITY_TO_LOG_LEVEL(GUC_LOG_VERBOSITY_MAX)
     48
     49struct intel_guc_log {
     50	u32 level;
     51	struct i915_vma *vma;
     52	void *buf_addr;
     53	struct {
     54		bool buf_in_use;
     55		bool started;
     56		struct work_struct flush_work;
     57		struct rchan *channel;
     58		struct mutex lock;
     59		u32 full_count;
     60	} relay;
     61	/* logging related stats */
     62	struct {
     63		u32 sampled_overflow;
     64		u32 overflow;
     65		u32 flush;
     66	} stats[GUC_MAX_LOG_BUFFER];
     67};
     68
     69void intel_guc_log_init_early(struct intel_guc_log *log);
     70bool intel_guc_check_log_buf_overflow(struct intel_guc_log *log, enum guc_log_buffer_type type,
     71				      unsigned int full_cnt);
     72unsigned int intel_guc_get_log_buffer_size(enum guc_log_buffer_type type);
     73size_t intel_guc_get_log_buffer_offset(enum guc_log_buffer_type type);
     74int intel_guc_log_create(struct intel_guc_log *log);
     75void intel_guc_log_destroy(struct intel_guc_log *log);
     76
     77int intel_guc_log_set_level(struct intel_guc_log *log, u32 level);
     78bool intel_guc_log_relay_created(const struct intel_guc_log *log);
     79int intel_guc_log_relay_open(struct intel_guc_log *log);
     80int intel_guc_log_relay_start(struct intel_guc_log *log);
     81void intel_guc_log_relay_flush(struct intel_guc_log *log);
     82void intel_guc_log_relay_close(struct intel_guc_log *log);
     83
     84void intel_guc_log_handle_flush_event(struct intel_guc_log *log);
     85
     86static inline u32 intel_guc_log_get_level(struct intel_guc_log *log)
     87{
     88	return log->level;
     89}
     90
     91void intel_guc_log_info(struct intel_guc_log *log, struct drm_printer *p);
     92int intel_guc_log_dump(struct intel_guc_log *log, struct drm_printer *p,
     93		       bool dump_load_err);
     94
     95#endif