// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
|
/*
|
*
|
* (C) COPYRIGHT 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.
|
*
|
*/
|
|
/*
|
* Debugfs interface to dump information about GPU_VA memory zones
|
*/
|
|
#include "mali_kbase_debug_mem_zones.h"
|
#include "mali_kbase.h"
|
|
#include <linux/list.h>
|
#include <linux/file.h>
|
|
#if IS_ENABLED(CONFIG_DEBUG_FS)
|
|
/**
|
* debug_mem_zones_show - Show information about GPU_VA memory zones
|
* @sfile: The debugfs entry
|
* @data: Data associated with the entry
|
*
|
* This function is called to get the contents of the @c mem_zones debugfs file.
|
* This lists the start address and size (in pages) of each initialized memory
|
* zone within GPU_VA memory.
|
*
|
* Return:
|
* 0 if successfully prints data in debugfs entry file
|
* -1 if it encountered an error
|
*/
|
static int debug_mem_zones_show(struct seq_file *sfile, void *data)
|
{
|
struct kbase_context *const kctx = sfile->private;
|
size_t i;
|
|
const char *zone_names[KBASE_REG_ZONE_MAX] = {
|
"SAME_VA",
|
"CUSTOM_VA",
|
"EXEC_VA"
|
#if MALI_USE_CSF
|
,
|
"MCU_SHARED_VA",
|
"EXEC_FIXED_VA",
|
"FIXED_VA"
|
#endif
|
};
|
|
kbase_gpu_vm_lock(kctx);
|
|
for (i = 0; i < KBASE_REG_ZONE_MAX; i++) {
|
struct kbase_reg_zone *reg_zone = &kctx->reg_zone[i];
|
|
if (reg_zone->base_pfn) {
|
seq_printf(sfile, "%15s %zu 0x%.16llx 0x%.16llx\n", zone_names[i], i,
|
reg_zone->base_pfn, reg_zone->va_size_pages);
|
}
|
}
|
|
kbase_gpu_vm_unlock(kctx);
|
return 0;
|
}
|
|
/*
|
* File operations related to debugfs entry for mem_zones
|
*/
|
static int debug_mem_zones_open(struct inode *in, struct file *file)
|
{
|
return single_open(file, debug_mem_zones_show, in->i_private);
|
}
|
|
static const struct file_operations kbase_debug_mem_zones_fops = {
|
.owner = THIS_MODULE,
|
.open = debug_mem_zones_open,
|
.read = seq_read,
|
.llseek = seq_lseek,
|
.release = single_release,
|
};
|
|
/*
|
* Initialize debugfs entry for mem_zones
|
*/
|
void kbase_debug_mem_zones_init(struct kbase_context *const kctx)
|
{
|
/* 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;
|
|
debugfs_create_file("mem_zones", 0400, kctx->kctx_dentry, kctx,
|
&kbase_debug_mem_zones_fops);
|
}
|
#else
|
/*
|
* Stub functions for when debugfs is disabled
|
*/
|
void kbase_debug_mem_zones_init(struct kbase_context *const kctx)
|
{
|
}
|
#endif
|
