Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux

drm/xe/xe3: Add WA_14024681466 for Xe3_LPG

Apply WA_14024681466 to Xe3_LPG graphics IP versions from 30.00 to 30.05.

v2: (Matthew Roper)
- Remove stepping filter as workaround applies to all steppings.
- Add an engine class filter so it only applies to the RENDER engine.

Signed-off-by: Nitin Gote <nitin.r.gote@intel.com>
Link: https://patch.msgid.link/20251027092643.335904-1-nitin.r.gote@intel.com
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
(cherry picked from commit 071089a69e199bd810ff31c4c933bd528e502743)
Cc: stable@vger.kernel.org # v6.16+
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>

authored by

Nitin Gote and committed by
Lucas De Marchi
0b2f7be5 e9a6fb0b

+5
+1
drivers/gpu/drm/xe/regs/xe_gt_regs.h
··· 168 168 169 169 #define XEHP_SLICE_COMMON_ECO_CHICKEN1 XE_REG_MCR(0x731c, XE_REG_OPTION_MASKED) 170 170 #define MSC_MSAA_REODER_BUF_BYPASS_DISABLE REG_BIT(14) 171 + #define FAST_CLEAR_VALIGN_FIX REG_BIT(13) 171 172 172 173 #define XE2LPM_CCCHKNREG1 XE_REG(0x82a8) 173 174
+4
drivers/gpu/drm/xe/xe_wa.c
··· 916 916 XE_RTP_RULES(GRAPHICS_VERSION_RANGE(3000, 3003), ENGINE_CLASS(RENDER)), 917 917 XE_RTP_ACTIONS(SET(COMMON_SLICE_CHICKEN4, SBE_PUSH_CONSTANT_BEHIND_FIX_ENABLE)) 918 918 }, 919 + { XE_RTP_NAME("14024681466"), 920 + XE_RTP_RULES(GRAPHICS_VERSION_RANGE(3000, 3005), ENGINE_CLASS(RENDER)), 921 + XE_RTP_ACTIONS(SET(XEHP_SLICE_COMMON_ECO_CHICKEN1, FAST_CLEAR_VALIGN_FIX)) 922 + }, 919 923 }; 920 924 921 925 static __maybe_unused const struct xe_rtp_entry oob_was[] = {