/*
* Copyright © 2014-2017 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
*/
#ifndef _INTEL_GUC_LOG_H_
#define _INTEL_GUC_LOG_H_
#include <linux/mutex.h>
#include <linux/relay.h>
#include <linux/workqueue.h>
#include "intel_guc_fwif.h"
struct intel_guc;
/*
* The first page is to save log buffer state. Allocate one
* extra page for others in case for overlap
*/
#define GUC_LOG_SIZE ((1 + GUC_LOG_DPC_PAGES + 1 + GUC_LOG_ISR_PAGES + \
1 + GUC_LOG_CRASH_PAGES + 1) << PAGE_SHIFT)
struct intel_guc_log {
u32 flags;
struct i915_vma *vma;
struct {
void *buf_addr;
struct workqueue_struct *flush_wq;
struct work_struct flush_work;
struct rchan *channel;
struct mutex lock;
u32 full_count;
} relay;
/* logging related stats */
u32 flush_interrupt_count;
u32 prev_overflow_count[GUC_MAX_LOG_BUFFER];
u32 total_overflow_count[GUC_MAX_LOG_BUFFER];
u32 flush_count[GUC_MAX_LOG_BUFFER];
};
void intel_guc_log_init_early(struct intel_guc_log *log);
int intel_guc_log_create(struct intel_guc_log *log);
void intel_guc_log_destroy(struct intel_guc_log *log);
int intel_guc_log_level_get(struct intel_guc_log *log);
int intel_guc_log_level_set(struct intel_guc_log *log, u64 control_val);
int intel_guc_log_relay_open(struct intel_guc_log *log);
void intel_guc_log_relay_flush(struct intel_guc_log *log);
void intel_guc_log_relay_close(struct intel_guc_log *log);
#endif
