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// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
/*
*
* (C) COPYRIGHT 2014-2021 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.
*
*/
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include "mali_kbase_mem_pool_debugfs.h"
#include "mali_kbase_debugfs_helper.h"
void kbase_mem_pool_debugfs_trim(void *const array, size_t const index,
size_t const value)
{
struct kbase_mem_pool *const mem_pools = array;
if (WARN_ON(!mem_pools) ||
WARN_ON(index >= MEMORY_GROUP_MANAGER_NR_GROUPS))
return;
kbase_mem_pool_trim(&mem_pools[index], value);
}
void kbase_mem_pool_debugfs_set_max_size(void *const array,
size_t const index, size_t const value)
{
struct kbase_mem_pool *const mem_pools = array;
if (WARN_ON(!mem_pools) ||
WARN_ON(index >= MEMORY_GROUP_MANAGER_NR_GROUPS))
return;
kbase_mem_pool_set_max_size(&mem_pools[index], value);
}
size_t kbase_mem_pool_debugfs_size(void *const array, size_t const index)
{
struct kbase_mem_pool *const mem_pools = array;
if (WARN_ON(!mem_pools) ||
WARN_ON(index >= MEMORY_GROUP_MANAGER_NR_GROUPS))
return 0;
return kbase_mem_pool_size(&mem_pools[index]);
}
size_t kbase_mem_pool_debugfs_max_size(void *const array, size_t const index)
{
struct kbase_mem_pool *const mem_pools = array;
if (WARN_ON(!mem_pools) ||
WARN_ON(index >= MEMORY_GROUP_MANAGER_NR_GROUPS))
return 0;
return kbase_mem_pool_max_size(&mem_pools[index]);
}
void kbase_mem_pool_config_debugfs_set_max_size(void *const array,
size_t const index, size_t const value)
{
struct kbase_mem_pool_config *const configs = array;
if (WARN_ON(!configs) ||
WARN_ON(index >= MEMORY_GROUP_MANAGER_NR_GROUPS))
return;
kbase_mem_pool_config_set_max_size(&configs[index], value);
}
size_t kbase_mem_pool_config_debugfs_max_size(void *const array,
size_t const index)
{
struct kbase_mem_pool_config *const configs = array;
if (WARN_ON(!configs) ||
WARN_ON(index >= MEMORY_GROUP_MANAGER_NR_GROUPS))
return 0;
return kbase_mem_pool_config_get_max_size(&configs[index]);
}
static int kbase_mem_pool_debugfs_size_show(struct seq_file *sfile, void *data)
{
CSTD_UNUSED(data);
return kbase_debugfs_helper_seq_read(sfile,
MEMORY_GROUP_MANAGER_NR_GROUPS, kbase_mem_pool_debugfs_size);
}
static ssize_t kbase_mem_pool_debugfs_write(struct file *file,
const char __user *ubuf, size_t count, loff_t *ppos)
{
int err;
CSTD_UNUSED(ppos);
err = kbase_debugfs_helper_seq_write(file, ubuf, count,
MEMORY_GROUP_MANAGER_NR_GROUPS, kbase_mem_pool_debugfs_trim);
return err ? err : count;
}
static int kbase_mem_pool_debugfs_open(struct inode *in, struct file *file)
{
return single_open(file, kbase_mem_pool_debugfs_size_show,
in->i_private);
}
static const struct file_operations kbase_mem_pool_debugfs_fops = {
.owner = THIS_MODULE,
.open = kbase_mem_pool_debugfs_open,
.read = seq_read,
.write = kbase_mem_pool_debugfs_write,
.llseek = seq_lseek,
.release = single_release,
};
static int kbase_mem_pool_debugfs_max_size_show(struct seq_file *sfile,
void *data)
{
CSTD_UNUSED(data);
return kbase_debugfs_helper_seq_read(sfile,
MEMORY_GROUP_MANAGER_NR_GROUPS,
kbase_mem_pool_debugfs_max_size);
}
static ssize_t kbase_mem_pool_debugfs_max_size_write(struct file *file,
const char __user *ubuf, size_t count, loff_t *ppos)
{
int err;
CSTD_UNUSED(ppos);
err = kbase_debugfs_helper_seq_write(file, ubuf, count,
MEMORY_GROUP_MANAGER_NR_GROUPS,
kbase_mem_pool_debugfs_set_max_size);
return err ? err : count;
}
static int kbase_mem_pool_debugfs_max_size_open(struct inode *in,
struct file *file)
{
return single_open(file, kbase_mem_pool_debugfs_max_size_show,
in->i_private);
}
static const struct file_operations kbase_mem_pool_debugfs_max_size_fops = {
.owner = THIS_MODULE,
.open = kbase_mem_pool_debugfs_max_size_open,
.read = seq_read,
.write = kbase_mem_pool_debugfs_max_size_write,
.llseek = seq_lseek,
.release = single_release,
};
void kbase_mem_pool_debugfs_init(struct dentry *parent,
struct kbase_context *kctx)
{
/* prevent unprivileged use of debug file in old kernel version */
#if (KERNEL_VERSION(4, 7, 0) <= LINUX_VERSION_CODE)
/* only for newer kernel version debug file system is safe */
const mode_t mode = 0644;
#else
const mode_t mode = 0600;
#endif
debugfs_create_file("mem_pool_size", mode, parent,
&kctx->mem_pools.small, &kbase_mem_pool_debugfs_fops);
debugfs_create_file("mem_pool_max_size", mode, parent,
&kctx->mem_pools.small, &kbase_mem_pool_debugfs_max_size_fops);
debugfs_create_file("lp_mem_pool_size", mode, parent,
&kctx->mem_pools.large, &kbase_mem_pool_debugfs_fops);
debugfs_create_file("lp_mem_pool_max_size", mode, parent,
&kctx->mem_pools.large, &kbase_mem_pool_debugfs_max_size_fops);
}
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