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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
* 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
* DOC: KTrace version history, JM variant
* 1.0:
* Original version (implicit, header did not carry version information).
* 2.0:
* Introduced version information into the header.
* Some changes of parameter names in header.
* Trace now uses all 64-bits of info_val.
* Non-JM specific parts moved to using info_val instead of refcount/gpu_addr.
* 2.1:
* 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).
* 2.2:
* Add tracing codes for pulling, unpulling, and returns atoms to JS for
* diagnosing soft-stop path and preemption problems
* Note: mali_kbase_debug_ktrace_jm.h needs these value even if the RBUF target
* is disabled (they get discarded with CSTD_UNUSED(), but they're still
* referenced)
/* indicates if the trace message has a valid refcount member */
#define KBASE_KTRACE_FLAG_JM_REFCOUNT (((kbase_ktrace_flag_t)1) << 0)
/* indicates if the trace message has a valid jobslot member */
#define KBASE_KTRACE_FLAG_JM_JOBSLOT (((kbase_ktrace_flag_t)1) << 1)
/* indicates if the trace message has valid atom related info. */
#define KBASE_KTRACE_FLAG_JM_ATOM (((kbase_ktrace_flag_t)1) << 2)
/* Collect all the flags together for debug checking */
* union kbase_ktrace_backend - backend specific part of a trace message
* Contains only a struct but is a union such that it is compatible with
* generic JM and CSF KTrace calls.
* @gpu: gpu union member
* @gpu.atom_udata: Copy of the user data sent for the atom in base_jd_submit.
* Only valid if KBASE_KTRACE_FLAG_JM_ATOM is set in @flags
* @gpu.gpu_addr: GPU address, usually of the job-chain represented by an
* atom.
* @gpu.atom_number: id of the atom for which trace message was added. Only
* valid if KBASE_KTRACE_FLAG_JM_ATOM is set in @flags
* @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.jobslot: job-slot for which trace message was added, valid only for
* job-slot management events.
* @gpu.refcount: reference count for the context, valid for certain events
* related to scheduler core and policy.
union kbase_ktrace_backend {
struct {
/* Place 64 and 32-bit members together */
u64 atom_udata[2]; /* Only valid for
u64 gpu_addr;
int atom_number; /* Only valid for KBASE_KTRACE_FLAG_JM_ATOM */
/* Pack smaller members together */
kbase_ktrace_code_t code;
kbase_ktrace_flag_t flags;
u8 jobslot;
u8 refcount;
} gpu;