1 /*
2 * Intel MIC Platform Software Stack (MPSS)
3 *
4 * Copyright(c) 2013 Intel Corporation.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License, version 2, as
8 * published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * The full GNU General Public License is included in this distribution in
16 * the file called "COPYING".
17 *
18 * Disclaimer: The codes contained in these modules may be specific to
19 * the Intel Software Development Platform codenamed: Knights Ferry, and
20 * the Intel product codenamed: Knights Corner, and are not backward
21 * compatible with other Intel products. Additionally, Intel will NOT
22 * support the codes or instruction set in future products.
23 *
24 * Intel MIC Card driver.
25 *
26 */
27 #include <linux/debugfs.h>
28 #include <linux/delay.h>
29 #include <linux/seq_file.h>
30 #include <linux/interrupt.h>
31 #include <linux/device.h>
32
33 #include "../common/mic_dev.h"
34 #include "mic_device.h"
35
36 /* Debugfs parent dir */
37 static struct dentry *mic_dbg;
38
39 /**
40 * mic_intr_test - Send interrupts to host.
41 */
mic_intr_test(struct seq_file * s,void * unused)42 static int mic_intr_test(struct seq_file *s, void *unused)
43 {
44 struct mic_driver *mdrv = s->private;
45 struct mic_device *mdev = &mdrv->mdev;
46
47 mic_send_intr(mdev, 0);
48 msleep(1000);
49 mic_send_intr(mdev, 1);
50 msleep(1000);
51 mic_send_intr(mdev, 2);
52 msleep(1000);
53 mic_send_intr(mdev, 3);
54 msleep(1000);
55
56 return 0;
57 }
58
mic_intr_test_open(struct inode * inode,struct file * file)59 static int mic_intr_test_open(struct inode *inode, struct file *file)
60 {
61 return single_open(file, mic_intr_test, inode->i_private);
62 }
63
mic_intr_test_release(struct inode * inode,struct file * file)64 static int mic_intr_test_release(struct inode *inode, struct file *file)
65 {
66 return single_release(inode, file);
67 }
68
69 static const struct file_operations intr_test_ops = {
70 .owner = THIS_MODULE,
71 .open = mic_intr_test_open,
72 .read = seq_read,
73 .llseek = seq_lseek,
74 .release = mic_intr_test_release
75 };
76
77 /**
78 * mic_create_card_debug_dir - Initialize MIC debugfs entries.
79 */
mic_create_card_debug_dir(struct mic_driver * mdrv)80 void __init mic_create_card_debug_dir(struct mic_driver *mdrv)
81 {
82 struct dentry *d;
83
84 if (!mic_dbg)
85 return;
86
87 mdrv->dbg_dir = debugfs_create_dir(mdrv->name, mic_dbg);
88 if (!mdrv->dbg_dir) {
89 dev_err(mdrv->dev, "Cant create dbg_dir %s\n", mdrv->name);
90 return;
91 }
92
93 d = debugfs_create_file("intr_test", 0444, mdrv->dbg_dir,
94 mdrv, &intr_test_ops);
95
96 if (!d) {
97 dev_err(mdrv->dev,
98 "Cant create dbg intr_test %s\n", mdrv->name);
99 return;
100 }
101 }
102
103 /**
104 * mic_delete_card_debug_dir - Uninitialize MIC debugfs entries.
105 */
mic_delete_card_debug_dir(struct mic_driver * mdrv)106 void mic_delete_card_debug_dir(struct mic_driver *mdrv)
107 {
108 if (!mdrv->dbg_dir)
109 return;
110
111 debugfs_remove_recursive(mdrv->dbg_dir);
112 }
113
114 /**
115 * mic_init_card_debugfs - Initialize global debugfs entry.
116 */
mic_init_card_debugfs(void)117 void __init mic_init_card_debugfs(void)
118 {
119 mic_dbg = debugfs_create_dir(KBUILD_MODNAME, NULL);
120 if (!mic_dbg)
121 pr_err("can't create debugfs dir\n");
122 }
123
124 /**
125 * mic_exit_card_debugfs - Uninitialize global debugfs entry
126 */
mic_exit_card_debugfs(void)127 void mic_exit_card_debugfs(void)
128 {
129 debugfs_remove(mic_dbg);
130 }
131