nv-tegra-mirror/linux-nvgpu
1
0
Fork 0
mirror of git://nv-tegra.nvidia.com/linux-nvgpu.git synced 2025-12-25 11:04:51 +03:00
Code Issues Packages Projects Releases Wiki Activity

gpu: nvgpu: Expose PMU security mode in debugfs

Browse Source 
Expose a debugfs entry pmu_security. It allows checking if PMU was
booted in secure or non-secure mode.

Change-Id: Iea584b696440779bee0900edccabd4e5b2997805
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/552456
This commit is contained in:
Terje Bergstrom
2014-10-01 08:41:32 +03:00
committed by Dan Willemsen
parent f84fad2a99
commit e067b530b8
1 changed files with 27 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
drivers/gpu/nvgpu/gk20a/pmu_gk20a.c
View File

@@ -4123,6 +4123,27 @@ static const struct file_operations perfmon_events_count_fops = {
.release = single_release,
};
static int security_show(struct seq_file *s, void *data)
{
struct gk20a *g = s->private;
seq_printf(s, "%d\n", g->pmu.pmu_mode);
return 0;
}
static int security_open(struct inode *inode, struct file *file)
{
return single_open(file, security_show, inode->i_private);
}
static const struct file_operations security_fops = {
.open = security_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
int gk20a_pmu_debugfs_init(struct platform_device *dev)
{
struct dentry *d;
@@ -4158,8 +4179,13 @@ int gk20a_pmu_debugfs_init(struct platform_device *dev)
&perfmon_events_count_fops);
if (!d)
goto err_out;
return 0;
d = debugfs_create_file(
"pmu_security", S_IRUGO, platform->debugfs, g,
&security_fops);
if (!d)
goto err_out;
return 0;
err_out:
pr_err("%s: Failed to make debugfs node\n", __func__);
debugfs_remove_recursive(platform->debugfs);