diff options
| author | Ashutosh Dixit <ashutosh.dixit@intel.com> | 2026-06-15 15:42:24 -0700 |
|---|---|---|
| committer | Thomas Hellström <thomas.hellstrom@linux.intel.com> | 2026-07-02 12:29:42 +0200 |
| commit | b422babd77fac2c96b92db484050e460899bddaf (patch) | |
| tree | 31ed01318ebf4525ebca6764548b4fde5fbeea91 | |
| parent | a19a83721a28ccaddace846da70da5c53d7dd052 (diff) | |
drm/xe/rtp: Toggle 'deny' bit to (de-)whitelist OA regs
Whitelist or de-whitelist OA registers by setting or resetting the 'deny'
bit in OA nonpriv registers and writing new register values to HW.
Fixes: 828a8eaf37c3 ("drm/xe/oa: Add MMIO trigger support")
Cc: stable@vger.kernel.org # v6.12+
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Link: https://patch.msgid.link/20260615224227.34880-7-ashutosh.dixit@intel.com
(cherry picked from commit aeaa7d2bb017272ab9e18759fe00bf758cd3299f)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
| -rw-r--r-- | drivers/gpu/drm/xe/xe_reg_whitelist.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_reg_whitelist.c b/drivers/gpu/drm/xe/xe_reg_whitelist.c index 76ac23644a4d..7186998df498 100644 --- a/drivers/gpu/drm/xe/xe_reg_whitelist.c +++ b/drivers/gpu/drm/xe/xe_reg_whitelist.c @@ -229,6 +229,21 @@ void xe_reg_whitelist_process_engine(struct xe_hw_engine *hwe) whitelist_apply_to_hwe(hwe, &hwe->oa_whitelist, &hwe->reg_sr, first_oa_slot); } +__maybe_unused static void __whitelist_oa_regs(struct xe_hw_engine *hwe, bool whitelist) +{ + struct xe_reg_sr_entry *entry; + unsigned long reg; + + xa_for_each(&hwe->oa_sr.xa, reg, entry) { + if (whitelist) + entry->set_bits &= ~RING_FORCE_TO_NONPRIV_DENY; + else + entry->set_bits |= RING_FORCE_TO_NONPRIV_DENY; + } + + xe_reg_sr_apply_mmio(&hwe->oa_sr, hwe->gt); +} + /** * xe_reg_whitelist_print_entry - print one whitelist entry * @p: DRM printer |