Re: [PATCH] drm/xe/xe3lpg: Add Wa_16024792527

[Gustavo Sousa <gustavo.sousa@intel.com>]

Quoting apoorva.singh@intel.com (2024-11-07 05:21:58-03:00)
>From: Apoorva Singh <apoorva.singh@intel.com>
>
>Force Sampler Tile64 Overfetch via MMIO
>
>Signed-off-by: Apoorva Singh <apoorva.singh@intel.com>

Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>

>---
> drivers/gpu/drm/xe/regs/xe_gt_regs.h | 2 ++
> drivers/gpu/drm/xe/xe_wa.c           | 6 ++++++
> 2 files changed, 8 insertions(+)
>
>diff --git a/drivers/gpu/drm/xe/regs/xe_gt_regs.h b/drivers/gpu/drm/xe/regs/xe_gt_regs.h
>index 0c9e4b2fafab..162f18e975da 100644
>--- a/drivers/gpu/drm/xe/regs/xe_gt_regs.h
>+++ b/drivers/gpu/drm/xe/regs/xe_gt_regs.h
>@@ -445,6 +445,8 @@
> 
> #define SAMPLER_MODE                                XE_REG_MCR(0xe18c, XE_REG_OPTION_MASKED)
> #define   ENABLE_SMALLPL                        REG_BIT(15)
>+#define   SMP_WAIT_FETCH_MERGING_COUNTER        REG_GENMASK(11, 10)
>+#define   SMP_FORCE_128B_OVERFETCH                REG_FIELD_PREP(SMP_WAIT_FETCH_MERGING_COUNTER, 1)
> #define   SC_DISABLE_POWER_OPTIMIZATION_EBB        REG_BIT(9)
> #define   SAMPLER_ENABLE_HEADLESS_MSG                REG_BIT(5)
> #define   INDIRECT_STATE_BASE_ADDR_OVERRIDE        REG_BIT(0)
>diff --git a/drivers/gpu/drm/xe/xe_wa.c b/drivers/gpu/drm/xe/xe_wa.c
>index 02cf647f86d8..570fe0376402 100644
>--- a/drivers/gpu/drm/xe/xe_wa.c
>+++ b/drivers/gpu/drm/xe/xe_wa.c
>@@ -607,6 +607,12 @@ static const struct xe_rtp_entry_sr engine_was[] = {
>                        FUNC(xe_rtp_match_first_render_or_compute)),
>           XE_RTP_ACTIONS(SET(ROW_CHICKEN4, DISABLE_TDL_PUSH))
>         },
>+        { XE_RTP_NAME("16024792527"),
>+          XE_RTP_RULES(GRAPHICS_VERSION(3000), GRAPHICS_STEP(A0, B0),
>+                       FUNC(xe_rtp_match_first_render_or_compute)),
>+          XE_RTP_ACTIONS(FIELD_SET(SAMPLER_MODE, SMP_WAIT_FETCH_MERGING_COUNTER,
>+                                   SMP_FORCE_128B_OVERFETCH))
>+        },
> 
>         {}
> };
>-- 
>2.34.1
>