From: Ashutosh Dixit Date: Mon, 15 Jun 2026 22:42:24 +0000 (-0700) Subject: drm/xe/rtp: Toggle 'deny' bit to (de-)whitelist OA regs X-Git-Tag: v7.2-rc2~10^2~1^2~12 X-Git-Url: http://git.ipfire.org/index.cgi?a=commitdiff_plain;h=b422babd77fac2c96b92db484050e460899bddaf;p=thirdparty%2Flinux.git 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 Reviewed-by: Umesh Nerlige Ramappa Link: https://patch.msgid.link/20260615224227.34880-7-ashutosh.dixit@intel.com (cherry picked from commit aeaa7d2bb017272ab9e18759fe00bf758cd3299f) Signed-off-by: Thomas Hellström --- 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