[v4,11/11] drm/xe/vrsr: Introduce a debugfs node named vrsr_capable

[Poosa, Karthik]

On 29-05-2025 16:46, Badal Nilawar wrote:
> Add a debugfs node named vrsr_capable to check if the device
> supports VRSR.
>
> Signed-off-by: Badal Nilawar<badal.nilawar at intel.com>
> ---
>   drivers/gpu/drm/xe/xe_debugfs.c | 20 ++++++++++++++++++++
>   1 file changed, 20 insertions(+)
>
> diff --git a/drivers/gpu/drm/xe/xe_debugfs.c b/drivers/gpu/drm/xe/xe_debugfs.c
> index d83cd6ed3fa8..d969a8f6d430 100644
> --- a/drivers/gpu/drm/xe/xe_debugfs.c
> +++ b/drivers/gpu/drm/xe/xe_debugfs.c
> @@ -226,6 +226,23 @@ static const struct file_operations atomic_svm_timeslice_ms_fops = {
>   	.write = atomic_svm_timeslice_ms_set,
>   };
>   
> +static ssize_t vrsr_capable_show(struct file *f, char __user *ubuf,
> +				 size_t size, loff_t *pos)
> +{
> +	struct xe_device *xe = file_inode(f)->i_private;
> +	char buf[32];
> +	int len = 0;
> +
> +	len = scnprintf(buf, sizeof(buf), "%s\n", xe->d3cold.vrsr_capable ? "true" : "false");
> +
> +	return simple_read_from_buffer(ubuf, size, pos, buf, len);
> +}
> +
> +static const struct file_operations vrsr_capable_fops = {
> +	.owner = THIS_MODULE,
> +	.read = vrsr_capable_show,
> +};
> +
>   void xe_debugfs_register(struct xe_device *xe)
>   {
>   	struct ttm_device *bdev = &xe->ttm;
> @@ -249,6 +266,9 @@ void xe_debugfs_register(struct xe_device *xe)
>   	debugfs_create_file("atomic_svm_timeslice_ms", 0600, root, xe,
>   			    &atomic_svm_timeslice_ms_fops);
>   
> +	debugfs_create_file("vrsr_capable", 0400, root, xe,
> +			    &vrsr_capable_fops);
Instead of debugfs_create_file, you can use debugfs_create_bool here, 
which will simplify the code.
> +
>   	for (mem_type = XE_PL_VRAM0; mem_type <= XE_PL_VRAM1; ++mem_type) {
>   		man = ttm_manager_type(bdev, mem_type);
>   
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/intel-xe/attachments/20250624/e49b239c/attachment-0001.htm>