[Intel-xe] [PATCH v2 11/12] drm/xe: Add missing DG2 lrc tunings

[Matt Roper]

On Fri, Mar 10, 2023 at 02:15:48PM -0800, Lucas De Marchi wrote:
> Synchronize with i915 the DG2 tunings as of
> commit 4d14d7717f19 ("drm/i915/selftest: Fix ktime_get() and h/w access
> order").
> 
> Contrary to the tuning "gang timer" for TGL, there is no quick
> justification for why the read back is disabled in i915. Keep it
> with that flag for now. That can be tentatively removed later when the
> read values are checked.
> 
> v2: Use XEHP_FF_MODE2 instead of GEN12_FF_MODE2 (Matt Roper)
> 
> Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>

Reviewed-by: Matt Roper <matthew.d.roper at intel.com>

> ---
>  drivers/gpu/drm/xe/regs/xe_gt_regs.h |  7 +++++++
>  drivers/gpu/drm/xe/xe_tuning.c       | 21 +++++++++++++++++++++
>  2 files changed, 28 insertions(+)
> 
> diff --git a/drivers/gpu/drm/xe/regs/xe_gt_regs.h b/drivers/gpu/drm/xe/regs/xe_gt_regs.h
> index 2600704ace0a..7a578672a818 100644
> --- a/drivers/gpu/drm/xe/regs/xe_gt_regs.h
> +++ b/drivers/gpu/drm/xe/regs/xe_gt_regs.h
> @@ -73,7 +73,11 @@
>  #define XEHP_TILE0_ADDR_RANGE			MCR_REG(0x4900)
>  #define XEHP_FLAT_CCS_BASE_ADDR			MCR_REG(0x4910)
>  
> +#define CHICKEN_RASTER_2			MCR_REG(0x6208)
> +#define   TBIMR_FAST_CLIP			REG_BIT(5)
> +
>  #define GEN12_FF_MODE2				_MMIO(0x6604)
> +#define XEHP_FF_MODE2				MCR_REG(0x6604)
>  #define   FF_MODE2_GS_TIMER_MASK		REG_GENMASK(31, 24)
>  #define   FF_MODE2_GS_TIMER_224			REG_FIELD_PREP(FF_MODE2_GS_TIMER_MASK, 224)
>  #define   FF_MODE2_TDS_TIMER_MASK		REG_GENMASK(23, 16)
> @@ -228,6 +232,9 @@
>  #define XEHP_L3NODEARBCFG			MCR_REG(0xb0b4)
>  #define   XEHP_LNESPARE				REG_BIT(19)
>  
> +#define XEHP_L3SQCREG5				MCR_REG(0xb158)
> +#define   L3_PWM_TIMER_INIT_VAL_MASK		REG_GENMASK(9, 0)
> +
>  #define XEHP_L3SCQREG7				MCR_REG(0xb188)
>  #define   BLEND_FILL_CACHING_OPT_DIS		REG_BIT(3)
>  
> diff --git a/drivers/gpu/drm/xe/xe_tuning.c b/drivers/gpu/drm/xe/xe_tuning.c
> index 47b27dccb385..928453b4636a 100644
> --- a/drivers/gpu/drm/xe/xe_tuning.c
> +++ b/drivers/gpu/drm/xe/xe_tuning.c
> @@ -35,6 +35,27 @@ static const struct xe_rtp_entry lrc_tunings[] = {
>  						FF_MODE2_GS_TIMER_MASK,
>  						FF_MODE2_GS_TIMER_224))
>  	},
> +
> +	/* DG2 */
> +
> +	{ XE_RTP_NAME("Tuning: L3 cache"),
> +	  XE_RTP_RULES(PLATFORM(DG2)),
> +	  XE_RTP_ACTIONS(FIELD_SET(XEHP_L3SQCREG5, L3_PWM_TIMER_INIT_VAL_MASK,
> +				   REG_FIELD_PREP(L3_PWM_TIMER_INIT_VAL_MASK, 0x7f)))
> +	},
> +	{ XE_RTP_NAME("Tuning: TDS gang timer"),
> +	  XE_RTP_RULES(PLATFORM(DG2)),
> +	  /* read verification is ignored as in i915 - need to check enabling */
> +	  XE_RTP_ACTIONS(FIELD_SET_NO_READ_MASK(XEHP_FF_MODE2,
> +						FF_MODE2_TDS_TIMER_MASK,
> +						FF_MODE2_TDS_TIMER_128))
> +	},
> +	{ XE_RTP_NAME("Tuning: TBIMR fast clip"),
> +	  XE_RTP_RULES(PLATFORM(DG2)),
> +	  XE_RTP_ACTIONS(SET(CHICKEN_RASTER_2, TBIMR_FAST_CLIP,
> +			     XE_RTP_ACTION_FLAG(MASKED_REG)))
> +	},
> +
>  	{}
>  };
>  
> -- 
> 2.39.0
> 

-- 
Matt Roper
Graphics Software Engineer
Linux GPU Platform Enablement
Intel Corporation