aboutsummaryrefslogtreecommitdiffstats
path: root/include/os/linux/debug_hal.c
diff options
context:
space:
mode:
authorJoshua Bakita <bakitajoshua@gmail.com>2023-06-28 18:24:25 -0400
committerJoshua Bakita <bakitajoshua@gmail.com>2023-06-28 18:24:25 -0400
commit01e6fac4d61fdd7fff5433942ec93fc2ea1e4df1 (patch)
tree4ef34501728a087be24f4ba0af90f91486bf780b /include/os/linux/debug_hal.c
parent306a03d18b305e4e573be3b2931978fa10679eb9 (diff)
Include nvgpu headers
These are needed to build on NVIDIA's Jetson boards for the time being. Only a couple structs are required, so it should be fairly easy to remove this dependency at some point in the future.
Diffstat (limited to 'include/os/linux/debug_hal.c')
-rw-r--r--include/os/linux/debug_hal.c95
1 files changed, 95 insertions, 0 deletions
diff --git a/include/os/linux/debug_hal.c b/include/os/linux/debug_hal.c
new file mode 100644
index 0000000..031e335
--- /dev/null
+++ b/include/os/linux/debug_hal.c
@@ -0,0 +1,95 @@
1/*
2 * Copyright (C) 2017 NVIDIA Corporation. All rights reserved.
3 *
4 * This software is licensed under the terms of the GNU General Public
5 * License version 2, as published by the Free Software Foundation, and
6 * may be copied, distributed, and modified under those terms.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 */
14
15#include "debug_hal.h"
16#include "os_linux.h"
17
18#include <linux/debugfs.h>
19#include <linux/seq_file.h>
20
21/* Format and print a single function pointer to the specified seq_file. */
22static void __hal_print_op(struct seq_file *s, void *op_ptr)
23{
24 seq_printf(s, "%pF\n", op_ptr);
25}
26
27/*
28 * Prints an array of function pointer addresses in op_ptrs to the
29 * specified seq_file
30 */
31static void __hal_print_ops(struct seq_file *s, void **op_ptrs, int num_ops)
32{
33 int i;
34
35 for (i = 0; i < num_ops; i++)
36 __hal_print_op(s, op_ptrs[i]);
37}
38
39/*
40 * Show file operation, which generates content of the file once. Prints a list
41 * of gpu operations as defined by gops and the corresponding function pointer
42 * destination addresses. Relies on no compiler reordering of struct fields and
43 * assumption that all members are function pointers.
44 */
45static int __hal_show(struct seq_file *s, void *unused)
46{
47 struct gpu_ops *gops = s->private;
48
49 __hal_print_ops(s, (void **)gops, sizeof(*gops) / sizeof(void *));
50
51 return 0;
52}
53
54static int __hal_open(struct inode *inode, struct file *file)
55{
56 return single_open(file, __hal_show, inode->i_private);
57}
58
59static const struct file_operations __hal_fops = {
60 .open = __hal_open,
61 .read = seq_read,
62 .llseek = seq_lseek,
63 .release = single_release,
64};
65
66void nvgpu_hal_debugfs_fini(struct gk20a *g)
67{
68 struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
69
70 if (!(l->debugfs_hal == NULL))
71 debugfs_remove_recursive(l->debugfs_hal);
72}
73
74void nvgpu_hal_debugfs_init(struct gk20a *g)
75{
76 struct dentry *d;
77 struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
78
79 if (!l->debugfs)
80 return;
81 l->debugfs_hal = debugfs_create_dir("hal", l->debugfs);
82 if (IS_ERR_OR_NULL(l->debugfs_hal)) {
83 l->debugfs_hal = NULL;
84 return;
85 }
86
87 /* Pass along reference to the gpu_ops struct as private data */
88 d = debugfs_create_file("gops", S_IRUGO, l->debugfs_hal,
89 &g->ops, &__hal_fops);
90 if (!d) {
91 nvgpu_err(g, "%s: Failed to make debugfs node\n", __func__);
92 debugfs_remove_recursive(l->debugfs_hal);
93 return;
94 }
95}