mirrors/linux
2
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-05-14 00:39:30 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/xe/vf: Don't expose privileged GT debugfs files if VF

Browse Source 
Some of the debugfs files require access to the registers that are
not accessible to the VFs. Don't expose those files on VF drivers.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Marcin Bernatowicz <marcin.bernatowicz@linux.intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Tested-by: Marcin Bernatowicz <marcin.bernatowicz@linux.intel.com>
Reviewed-by: Marcin Bernatowicz <marcin.bernatowicz@linux.intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20250403142635.1821-4-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko
2025-04-03 16:26:35 +02:00
parent 387444984d
commit d11c5a928a
1 changed files with 22 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
drivers/gpu/drm/xe/xe_gt_debugfs.c
View File

@@ -299,20 +299,20 @@ static int hwconfig(struct xe_gt *gt, struct drm_printer *p)
return 0;
}
static const struct drm_info_list debugfs_list[] = {
{"hw_engines", .show = xe_gt_debugfs_simple_show, .data = hw_engines},
/*
* only for GT debugfs files which can be safely used on the VF as well:
* - without access to the GT privileged registers
* - without access to the PF specific data
*/
static const struct drm_info_list vf_safe_debugfs_list[] = {
{"force_reset", .show = xe_gt_debugfs_simple_show, .data = force_reset},
{"force_reset_sync", .show = xe_gt_debugfs_simple_show, .data = force_reset_sync},
{"sa_info", .show = xe_gt_debugfs_simple_show, .data = sa_info},
{"topology", .show = xe_gt_debugfs_simple_show, .data = topology},
{"steering", .show = xe_gt_debugfs_simple_show, .data = steering},
{"ggtt", .show = xe_gt_debugfs_simple_show, .data = ggtt},
{"powergate_info", .show = xe_gt_debugfs_simple_show, .data = powergate_info},
{"register-save-restore", .show = xe_gt_debugfs_simple_show, .data = register_save_restore},
{"workarounds", .show = xe_gt_debugfs_simple_show, .data = workarounds},
{"tunings", .show = xe_gt_debugfs_simple_show, .data = tunings},
{"pat", .show = xe_gt_debugfs_simple_show, .data = pat},
{"mocs", .show = xe_gt_debugfs_simple_show, .data = mocs},
{"default_lrc_rcs", .show = xe_gt_debugfs_simple_show, .data = rcs_default_lrc},
{"default_lrc_ccs", .show = xe_gt_debugfs_simple_show, .data = ccs_default_lrc},
{"default_lrc_bcs", .show = xe_gt_debugfs_simple_show, .data = bcs_default_lrc},
@@ -322,6 +322,15 @@ static const struct drm_info_list debugfs_list[] = {
{"hwconfig", .show = xe_gt_debugfs_simple_show, .data = hwconfig},
};
/* everything else should be added here */
static const struct drm_info_list pf_only_debugfs_list[] = {
{"hw_engines", .show = xe_gt_debugfs_simple_show, .data = hw_engines},
{"mocs", .show = xe_gt_debugfs_simple_show, .data = mocs},
{"pat", .show = xe_gt_debugfs_simple_show, .data = pat},
{"powergate_info", .show = xe_gt_debugfs_simple_show, .data = powergate_info},
{"steering", .show = xe_gt_debugfs_simple_show, .data = steering},
};
void xe_gt_debugfs_register(struct xe_gt *gt)
{
struct xe_device *xe = gt_to_xe(gt);
@@ -345,10 +354,15 @@ void xe_gt_debugfs_register(struct xe_gt *gt)
*/
root->d_inode->i_private = gt;
drm_debugfs_create_files(debugfs_list,
ARRAY_SIZE(debugfs_list),
drm_debugfs_create_files(vf_safe_debugfs_list,
ARRAY_SIZE(vf_safe_debugfs_list),
root, minor);
if (!IS_SRIOV_VF(xe))
drm_debugfs_create_files(pf_only_debugfs_list,
ARRAY_SIZE(pf_only_debugfs_list),
root, minor);
xe_uc_debugfs_register(&gt->uc, root);
if (IS_SRIOV_PF(xe))