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// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
/*
*
* (C) COPYRIGHT 2014-2022 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.
*
*/
#if IS_ENABLED(CONFIG_DEBUG_FS)
#include <linux/seq_file.h>
#include <mali_kbase.h>
#include <mali_kbase_jd_debugfs.h>
#if IS_ENABLED(CONFIG_SYNC_FILE)
#include <mali_kbase_sync.h>
#endif
#include <uapi/gpu/arm/midgard/mali_kbase_ioctl.h>
struct kbase_jd_debugfs_depinfo {
u8 id;
char type;
};
static void kbase_jd_debugfs_fence_info(struct kbase_jd_atom *atom,
struct seq_file *sfile)
{
#if IS_ENABLED(CONFIG_SYNC_FILE)
struct kbase_sync_fence_info info;
int res;
switch (atom->core_req & BASE_JD_REQ_SOFT_JOB_TYPE) {
case BASE_JD_REQ_SOFT_FENCE_TRIGGER:
res = kbase_sync_fence_out_info_get(atom, &info);
if (res == 0)
seq_printf(sfile, "Sa([%pK]%d) ",
info.fence, info.status);
break;
case BASE_JD_REQ_SOFT_FENCE_WAIT:
res = kbase_sync_fence_in_info_get(atom, &info);
if (res == 0)
seq_printf(sfile, "Wa([%pK]%d) ",
info.fence, info.status);
break;
default:
break;
}
#endif /* CONFIG_SYNC_FILE */
}
static void kbasep_jd_debugfs_atom_deps(
struct kbase_jd_debugfs_depinfo *deps,
struct kbase_jd_atom *atom)
{
struct kbase_context *kctx = atom->kctx;
int i;
for (i = 0; i < 2; i++) {
deps[i].id = (unsigned int)(atom->dep[i].atom ?
kbase_jd_atom_id(kctx, atom->dep[i].atom) : 0);
switch (atom->dep[i].dep_type) {
case BASE_JD_DEP_TYPE_INVALID:
deps[i].type = ' ';
break;
case BASE_JD_DEP_TYPE_DATA:
deps[i].type = 'D';
break;
case BASE_JD_DEP_TYPE_ORDER:
deps[i].type = '>';
break;
default:
deps[i].type = '?';
break;
}
}
}
/**
* kbasep_jd_debugfs_atoms_show - Show callback for the JD atoms debugfs file.
* @sfile: The debugfs entry
* @data: Data associated with the entry
*
* This function is called to get the contents of the JD atoms debugfs file.
* This is a report of all atoms managed by kbase_jd_context.atoms
*
* Return: 0 if successfully prints data in debugfs entry file, failure
* otherwise
*/
static int kbasep_jd_debugfs_atoms_show(struct seq_file *sfile, void *data)
{
struct kbase_context *kctx = sfile->private;
struct kbase_jd_atom *atoms;
unsigned long irq_flags;
int i;
KBASE_DEBUG_ASSERT(kctx != NULL);
/* Print version */
seq_printf(sfile, "v%u\n", MALI_JD_DEBUGFS_VERSION);
/* Print U/K API version */
seq_printf(sfile, "ukv%u.%u\n", BASE_UK_VERSION_MAJOR,
BASE_UK_VERSION_MINOR);
/* Print table heading */
seq_puts(sfile, " ID, Core req, St, Predeps, Start time, Additional info...\n");
atoms = kctx->jctx.atoms;
/* General atom states */
rt_mutex_lock(&kctx->jctx.lock);
/* JS-related states */
spin_lock_irqsave(&kctx->kbdev->hwaccess_lock, irq_flags);
for (i = 0; i != BASE_JD_ATOM_COUNT; ++i) {
struct kbase_jd_atom *atom = &atoms[i];
s64 start_timestamp = 0;
struct kbase_jd_debugfs_depinfo deps[2];
if (atom->status == KBASE_JD_ATOM_STATE_UNUSED)
continue;
/* start_timestamp is cleared as soon as the atom leaves UNUSED state
* and set before a job is submitted to the h/w, a non-zero value means
* it is valid
*/
if (ktime_to_ns(atom->start_timestamp))
start_timestamp =
ktime_to_ns(ktime_sub(ktime_get_raw(), atom->start_timestamp));
kbasep_jd_debugfs_atom_deps(deps, atom);
seq_printf(sfile,
"%3u, %8x, %2u, %c%3u %c%3u, %20lld, ",
i, atom->core_req, atom->status,
deps[0].type, deps[0].id,
deps[1].type, deps[1].id,
start_timestamp);
kbase_jd_debugfs_fence_info(atom, sfile);
seq_puts(sfile, "\n");
}
spin_unlock_irqrestore(&kctx->kbdev->hwaccess_lock, irq_flags);
rt_mutex_unlock(&kctx->jctx.lock);
return 0;
}
/**
* kbasep_jd_debugfs_atoms_open - open operation for atom debugfs file
* @in: &struct inode pointer
* @file: &struct file pointer
*
* Return: file descriptor
*/
static int kbasep_jd_debugfs_atoms_open(struct inode *in, struct file *file)
{
return single_open(file, kbasep_jd_debugfs_atoms_show, in->i_private);
}
static const struct file_operations kbasep_jd_debugfs_atoms_fops = {
.owner = THIS_MODULE,
.open = kbasep_jd_debugfs_atoms_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
void kbasep_jd_debugfs_ctx_init(struct kbase_context *kctx)
{
const mode_t mode = 0444;
/* Caller already ensures this, but we keep the pattern for
* maintenance safety.
*/
if (WARN_ON(!kctx) ||
WARN_ON(IS_ERR_OR_NULL(kctx->kctx_dentry)))
return;
/* Expose all atoms */
debugfs_create_file("atoms", mode, kctx->kctx_dentry, kctx,
&kbasep_jd_debugfs_atoms_fops);
}
#endif /* CONFIG_DEBUG_FS */
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