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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
*
* (C) COPYRIGHT 2020-2021 ARM Limited. All rights reserved.
*
* This program is free software and is provided to you under the terms of the
* GNU General Public License version 2 as published by the Free Software
* Foundation, and any use by you of this program is subject to the terms
* of such GNU license.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you can access it online at
* http://www.gnu.org/licenses/gpl-2.0.html.
*
*/
#ifndef _KBASE_DEBUG_KTRACE_DEFS_CSF_H_
#define _KBASE_DEBUG_KTRACE_DEFS_CSF_H_
#if KBASE_KTRACE_TARGET_RBUF
/**
* DOC: KTrace version history, CSF variant
*
* 1.0:
* First version, with version information in the header.
*
* 1.1:
* kctx field is no longer a pointer, and is now an ID of the format %d_%u as
* used by kctx directories in mali debugfs entries: (tgid creating the kctx),
* (unique kctx id)
*
* ftrace backend now outputs kctx field (as %d_%u format).
*
* Add fields group, slot, prio, csi into backend-specific part.
*
* 1.2:
* There is a new class of KCPU traces; with this, a new KCPU column in the
* ringbuffer RBUF (mali_trace) between csi and info_val, which is empty
* for non-kcpu related traces, and usually displays the KCPU Queue ID and
* an extra information value. ftrace also displays these KCPU traces.
*
* 1.3:
* Add a lot of extra new traces. Tweak some existing scheduler related traces
* to contain extra information information/happen at slightly different times.
* SCHEDULER_EXIT_PROTM now has group information
*/
#define KBASE_KTRACE_VERSION_MAJOR 1
#define KBASE_KTRACE_VERSION_MINOR 3
/* indicates if the trace message has valid queue-group related info. */
#define KBASE_KTRACE_FLAG_CSF_GROUP (((kbase_ktrace_flag_t)1) << 0)
/* indicates if the trace message has valid queue related info. */
#define KBASE_KTRACE_FLAG_CSF_QUEUE (((kbase_ktrace_flag_t)1) << 1)
/* indicates if the trace message has valid KCPU-queue related info. */
#define KBASE_KTRACE_FLAG_CSF_KCPU (((kbase_ktrace_flag_t)1) << 2)
/* Collect all the flags together for debug checking */
#define KBASE_KTRACE_FLAG_BACKEND_ALL \
(KBASE_KTRACE_FLAG_CSF_GROUP | KBASE_KTRACE_FLAG_CSF_QUEUE | \
KBASE_KTRACE_FLAG_CSF_KCPU)
/**
* union kbase_ktrace_backend - backend specific part of a trace message
* @kcpu: kcpu union member
* @kcpu.code: Identifies the event, refer to enum kbase_ktrace_code.
* @kcpu.flags: indicates information about the trace message itself. Used
* during dumping of the message.
* @kcpu.id: ID of the KCPU queue.
* @kcpu.extra_info_val: value specific to the type of KCPU event being traced.
* Refer to the KPU specific code in enum kbase_ktrace_code in
* mali_kbase_debug_ktrace_codes_csf.h
* @gpu: gpu union member
* @gpu.code: Identifies the event, refer to enum kbase_ktrace_code.
* @gpu.flags: indicates information about the trace message itself. Used
* during dumping of the message.
* @gpu.group_handle: Handle identifying the associated queue group. Only valid
* when @flags contains KBASE_KTRACE_FLAG_CSF_GROUP.
* @gpu.csg_nr: Number/index of the associated queue group's CS group to
* which it is mapped, or negative if none associated. Only
* valid when @flags contains KBASE_KTRACE_FLAG_CSF_GROUP.
* @gpu.slot_prio: The priority of the slot for the associated group, if it
* was scheduled. Hence, only valid when @csg_nr >=0 and
* @flags contains KBASE_KTRACE_FLAG_CSF_GROUP.
* @gpu.csi_index: ID of the associated queue's CS HW interface.
* Only valid when @flags contains KBASE_KTRACE_FLAG_CSF_QUEUE.
*/
union kbase_ktrace_backend {
/* Place 64 and 32-bit members together */
/* Pack smaller members together */
struct {
kbase_ktrace_code_t code;
kbase_ktrace_flag_t flags;
u8 id;
u64 extra_info_val;
} kcpu;
struct {
kbase_ktrace_code_t code;
kbase_ktrace_flag_t flags;
u8 group_handle;
s8 csg_nr;
u8 slot_prio;
s8 csi_index;
} gpu;
};
#endif /* KBASE_KTRACE_TARGET_RBUF */
#endif /* _KBASE_DEBUG_KTRACE_DEFS_CSF_H_ */
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