From: Matt Roper Date: Thu, 19 Mar 2026 22:30:34 +0000 (-0700) Subject: drm/xe: Implement recent spec updates to Wa_16025250150 X-Git-Tag: v7.0-rc6~19^2~1^2~1 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=56781a4597706cd25185b1dedc38841ec6c31496;p=thirdparty%2Fkernel%2Flinux.git drm/xe: Implement recent spec updates to Wa_16025250150 The hardware teams noticed that the originally documented workaround steps for Wa_16025250150 may not be sufficient to fully avoid a hardware issue. The workaround documentation has been augmented to suggest programming one additional register; make the corresponding change in the driver. Fixes: 7654d51f1fd8 ("drm/xe/xe2hpg: Add Wa_16025250150") Reviewed-by: Matt Atwood Link: https://patch.msgid.link/20260319-wa_16025250150_part2-v1-1-46b1de1a31b2@intel.com Signed-off-by: Matt Roper (cherry picked from commit a31566762d4075646a8a2214586158b681e94305) Signed-off-by: Rodrigo Vivi --- diff --git a/drivers/gpu/drm/xe/regs/xe_gt_regs.h b/drivers/gpu/drm/xe/regs/xe_gt_regs.h index 24fc64fc832e..9d66f168ab8a 100644 --- a/drivers/gpu/drm/xe/regs/xe_gt_regs.h +++ b/drivers/gpu/drm/xe/regs/xe_gt_regs.h @@ -553,6 +553,7 @@ #define ENABLE_SMP_LD_RENDER_SURFACE_CONTROL REG_BIT(44 - 32) #define FORCE_SLM_FENCE_SCOPE_TO_TILE REG_BIT(42 - 32) #define FORCE_UGM_FENCE_SCOPE_TO_TILE REG_BIT(41 - 32) +#define L3_128B_256B_WRT_DIS REG_BIT(40 - 32) #define MAXREQS_PER_BANK REG_GENMASK(39 - 32, 37 - 32) #define DISABLE_128B_EVICTION_COMMAND_UDW REG_BIT(36 - 32) diff --git a/drivers/gpu/drm/xe/xe_wa.c b/drivers/gpu/drm/xe/xe_wa.c index 462c2fa712e0..d7e309ad9aba 100644 --- a/drivers/gpu/drm/xe/xe_wa.c +++ b/drivers/gpu/drm/xe/xe_wa.c @@ -247,7 +247,8 @@ static const struct xe_rtp_entry_sr gt_was[] = { LSN_DIM_Z_WGT_MASK, LSN_LNI_WGT(1) | LSN_LNE_WGT(1) | LSN_DIM_X_WGT(1) | LSN_DIM_Y_WGT(1) | - LSN_DIM_Z_WGT(1))) + LSN_DIM_Z_WGT(1)), + SET(LSC_CHICKEN_BIT_0_UDW, L3_128B_256B_WRT_DIS)) }, /* Xe2_HPM */