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drm/xe/guc: Don't expose GuC privileged debugfs files if VF

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Some of the GuC debugfs files require access to the data that is
not available on the VFs. Don't expose those files on the VF driver.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20250403142635.1821-3-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko 2025-04-03 16:26:34 +02:00
parent e15826bb3c
commit 387444984d
1 changed files with 18 additions and 4 deletions
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22
drivers/gpu/drm/xe/xe_guc_debugfs.c
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@ -103,11 +103,20 @@ static int guc_pc(struct xe_guc *guc, struct drm_printer *p)
return 0;
}
static const struct drm_info_list debugfs_list[] = {
/*
* only for GuC debugfs files which can be safely used on the VF as well:
* - without access to the GuC privileged registers
* - without access to the PF specific GuC objects
*/
static const struct drm_info_list vf_safe_debugfs_list[] = {
{ "guc_info", .show = guc_debugfs_show, .data = xe_guc_print_info },
{ "guc_ctb", .show = guc_debugfs_show, .data = guc_ctb },
};
/* everything else should be added here */
static const struct drm_info_list pf_only_debugfs_list[] = {
{ "guc_log", .show = guc_debugfs_show, .data = guc_log },
{ "guc_log_dmesg", .show = guc_debugfs_show, .data = guc_log_dmesg },
{ "guc_ctb", .show = guc_debugfs_show, .data = guc_ctb },
{ "guc_pc", .show = guc_debugfs_show, .data = guc_pc },
};
@ -115,7 +124,12 @@ void xe_guc_debugfs_register(struct xe_guc *guc, struct dentry *parent)
{
struct drm_minor *minor = guc_to_xe(guc)->drm.primary;
drm_debugfs_create_files(debugfs_list,
ARRAY_SIZE(debugfs_list),
drm_debugfs_create_files(vf_safe_debugfs_list,
ARRAY_SIZE(vf_safe_debugfs_list),
parent, minor);
if (!IS_SRIOV_VF(guc_to_xe(guc)))
drm_debugfs_create_files(pf_only_debugfs_list,
ARRAY_SIZE(pf_only_debugfs_list),
parent, minor);
}