/*
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*
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* (C) COPYRIGHT 2016 ARM Limited. All rights reserved.
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*
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* This program is free software and is provided to you under the terms of the
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* GNU General Public License version 2 as published by the Free Software
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* Foundation, and any use by you of this program is subject to the terms
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* of such GNU licence.
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*
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* A copy of the licence is included with the program, and can also be obtained
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* from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#include <linux/debugfs.h>
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#include <mali_kbase.h>
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#include <mali_kbase_as_fault_debugfs.h>
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#ifdef CONFIG_DEBUG_FS
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#ifdef CONFIG_MALI_DEBUG
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static int kbase_as_fault_read(struct seq_file *sfile, void *data)
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{
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uintptr_t as_no = (uintptr_t) sfile->private;
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struct list_head *entry;
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const struct list_head *kbdev_list;
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struct kbase_device *kbdev = NULL;
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kbdev_list = kbase_dev_list_get();
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list_for_each(entry, kbdev_list) {
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kbdev = list_entry(entry, struct kbase_device, entry);
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if(kbdev->debugfs_as_read_bitmap & (1ULL << as_no)) {
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/* don't show this one again until another fault occors */
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kbdev->debugfs_as_read_bitmap &= ~(1ULL << as_no);
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/* output the last page fault addr */
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seq_printf(sfile, "%llu\n", (u64) kbdev->as[as_no].fault_addr);
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}
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}
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kbase_dev_list_put(kbdev_list);
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return 0;
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}
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static int kbase_as_fault_debugfs_open(struct inode *in, struct file *file)
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{
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return single_open(file, kbase_as_fault_read , in->i_private);
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}
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static const struct file_operations as_fault_fops = {
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.open = kbase_as_fault_debugfs_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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#endif /* CONFIG_MALI_DEBUG */
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#endif /* CONFIG_DEBUG_FS */
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/*
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* Initialize debugfs entry for each address space
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*/
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void kbase_as_fault_debugfs_init(struct kbase_device *kbdev)
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{
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#ifdef CONFIG_DEBUG_FS
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#ifdef CONFIG_MALI_DEBUG
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uint i;
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char as_name[64];
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struct dentry *debugfs_directory;
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kbdev->debugfs_as_read_bitmap = 0ULL;
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KBASE_DEBUG_ASSERT(kbdev->nr_hw_address_spaces);
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KBASE_DEBUG_ASSERT(sizeof(kbdev->as[0].fault_addr) == sizeof(u64));
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debugfs_directory = debugfs_create_dir("address_spaces",
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kbdev->mali_debugfs_directory);
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if(debugfs_directory) {
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for(i = 0; i < kbdev->nr_hw_address_spaces; i++) {
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snprintf(as_name, ARRAY_SIZE(as_name), "as%u", i);
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debugfs_create_file(as_name, S_IRUGO,
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debugfs_directory, (void*) ((uintptr_t) i), &as_fault_fops);
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}
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}
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else
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dev_warn(kbdev->dev, "unable to create address_spaces debugfs directory");
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#endif /* CONFIG_MALI_DEBUG */
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#endif /* CONFIG_DEBUG_FS */
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return;
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}
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