developer | 3893734 | 2024-07-05 15:43:05 +0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
| 2 | /* |
| 3 | * Copyright (C) 2024 MediaTek Inc. |
| 4 | * |
| 5 | * Author: Frank-zj Lin <frank-zj.lin@mediatek.com> |
| 6 | */ |
| 7 | |
| 8 | #include <linux/debugfs.h> |
| 9 | #include <linux/spinlock.h> |
| 10 | |
| 11 | #include <pce/cdrt.h> |
| 12 | |
| 13 | #include "crypto-eip/crypto-eip.h" |
| 14 | |
| 15 | struct dentry *mtk_crypto_debugfs_root; |
| 16 | |
| 17 | static int mtk_crypto_debugfs_read(struct seq_file *s, void *private) |
| 18 | { |
| 19 | struct xfrm_params_list *xfrm_params_list; |
| 20 | struct mtk_xfrm_params *xfrm_params; |
| 21 | unsigned long flags; |
| 22 | |
| 23 | xfrm_params_list = mtk_xfrm_params_list_get(); |
| 24 | |
| 25 | spin_lock_irqsave(&xfrm_params_list->lock, flags); |
| 26 | |
| 27 | list_for_each_entry(xfrm_params, &xfrm_params_list->list, node) { |
| 28 | seq_printf(s, "XFRM STATE: spi 0x%x, cdrt_idx %3d: ", |
| 29 | htonl(xfrm_params->xs->id.spi), |
| 30 | xfrm_params->cdrt->idx); |
| 31 | |
| 32 | if (xfrm_params->cdrt->type == CDRT_DECRYPT) |
| 33 | seq_puts(s, "DECRYPT\n"); |
| 34 | else if (xfrm_params->cdrt->type == CDRT_ENCRYPT) |
| 35 | seq_puts(s, "ENCRYPT\n"); |
| 36 | else |
| 37 | seq_puts(s, "\n"); |
| 38 | } |
| 39 | |
| 40 | spin_unlock_irqrestore(&xfrm_params_list->lock, flags); |
| 41 | |
| 42 | return 0; |
| 43 | } |
| 44 | |
| 45 | static int mtk_crypto_debugfs_open(struct inode *inode, struct file *file) |
| 46 | { |
| 47 | return single_open(file, mtk_crypto_debugfs_read, file->private_data); |
| 48 | } |
| 49 | |
| 50 | static ssize_t mtk_crypto_debugfs_write(struct file *file, |
| 51 | const char __user *ubuf, |
| 52 | size_t count, loff_t *ppos) |
| 53 | { |
| 54 | return count; |
| 55 | } |
| 56 | |
| 57 | static const struct file_operations mtk_crypto_debugfs_fops = { |
| 58 | .open = mtk_crypto_debugfs_open, |
| 59 | .read = seq_read, |
| 60 | .llseek = seq_lseek, |
| 61 | .write = mtk_crypto_debugfs_write, |
| 62 | .release = single_release, |
| 63 | }; |
| 64 | |
| 65 | int mtk_crypto_debugfs_init(void) |
| 66 | { |
| 67 | mtk_crypto_debugfs_root = debugfs_create_dir("mtk_crypto", NULL); |
| 68 | |
| 69 | debugfs_create_file("xfrm_params", 0644, mtk_crypto_debugfs_root, NULL, |
| 70 | &mtk_crypto_debugfs_fops); |
| 71 | |
| 72 | return 0; |
| 73 | } |
| 74 | |
| 75 | void mtk_crypto_debugfs_exit(void) |
| 76 | { |
| 77 | debugfs_remove_recursive(mtk_crypto_debugfs_root); |
| 78 | } |