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Message-ID: <e2d2c79a-42f0-f445-f206-100568c236cf@riseup.net>
Date: Mon, 19 Sep 2022 20:02:18 -0300
From: Maíra Canal <mairacanal@...eup.net>
To: Tom Rix <trix@...hat.com>, harry.wentland@....com,
sunpeng.li@....com, Rodrigo.Siqueira@....com,
alexander.deucher@....com, christian.koenig@....com,
Xinhui.Pan@....com, airlied@...ux.ie, daniel@...ll.ch,
aric.cyr@....com, Nevenko.Stupar@....com, Pavle.Kotarac@....com,
aurabindo.pillai@....com, Bing.Guo@....com, hamza.mahfooz@....com,
nicholas.kazlauskas@....com, agustin.gutierrez@....com,
nathan@...nel.org, mdaenzer@...hat.com, Charlene.Liu@....com
Cc: dri-devel@...ts.freedesktop.org, amd-gfx@...ts.freedesktop.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/amd/display: remove redundant CalculateTWait's
Hi Tom,
On 9/18/22 23:37, Tom Rix wrote:
> There are several copies of CalculateTwait.
> Reduce to one instance and change local variable name to match common usage.
>
> Signed-off-by: Tom Rix <trix@...hat.com>
Reviewed-by: Maíra Canal <mairacanal@...eup.net>
Although, it would be nice to put this function on the
display_mode_vba.h file, as all DCNs use this function.
Best Regards,
- Maíra Canal
> ---
> .../dc/dml/dcn20/display_mode_vba_20.c | 16 +++++++-------
> .../dc/dml/dcn20/display_mode_vba_20v2.c | 21 ++-----------------
> .../dc/dml/dcn21/display_mode_vba_21.c | 19 +----------------
> .../dc/dml/dcn30/display_mode_vba_30.c | 18 +---------------
> .../dc/dml/dcn31/display_mode_vba_31.c | 13 +-----------
> .../dc/dml/dcn314/display_mode_vba_314.c | 13 +-----------
> 6 files changed, 14 insertions(+), 86 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn20/display_mode_vba_20.c b/drivers/gpu/drm/amd/display/dc/dml/dcn20/display_mode_vba_20.c
> index 6e9d7e2b5243..4ca080950924 100644
> --- a/drivers/gpu/drm/amd/display/dc/dml/dcn20/display_mode_vba_20.c
> +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn20/display_mode_vba_20.c
> @@ -153,10 +153,10 @@ static unsigned int CalculateVMAndRowBytes(
> bool *PTEBufferSizeNotExceeded,
> unsigned int *dpte_row_height,
> unsigned int *meta_row_height);
> -static double CalculateTWait(
> +double CalculateTWait(
> unsigned int PrefetchMode,
> double DRAMClockChangeLatency,
> - double UrgentLatencyPixelDataOnly,
> + double UrgentLatency,
> double SREnterPlusExitTime);
> static double CalculateRemoteSurfaceFlipDelay(
> struct display_mode_lib *mode_lib,
> @@ -2892,20 +2892,20 @@ static void dml20_DisplayPipeConfiguration(struct display_mode_lib *mode_lib)
> }
> }
>
> -static double CalculateTWait(
> +double CalculateTWait(
> unsigned int PrefetchMode,
> double DRAMClockChangeLatency,
> - double UrgentLatencyPixelDataOnly,
> + double UrgentLatency,
> double SREnterPlusExitTime)
> {
> if (PrefetchMode == 0) {
> return dml_max(
> - DRAMClockChangeLatency + UrgentLatencyPixelDataOnly,
> - dml_max(SREnterPlusExitTime, UrgentLatencyPixelDataOnly));
> + DRAMClockChangeLatency + UrgentLatency,
> + dml_max(SREnterPlusExitTime, UrgentLatency));
> } else if (PrefetchMode == 1) {
> - return dml_max(SREnterPlusExitTime, UrgentLatencyPixelDataOnly);
> + return dml_max(SREnterPlusExitTime, UrgentLatency);
> } else {
> - return UrgentLatencyPixelDataOnly;
> + return UrgentLatency;
> }
> }
>
> diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn20/display_mode_vba_20v2.c b/drivers/gpu/drm/amd/display/dc/dml/dcn20/display_mode_vba_20v2.c
> index b02dda8ce70f..2b4dcae4e432 100644
> --- a/drivers/gpu/drm/amd/display/dc/dml/dcn20/display_mode_vba_20v2.c
> +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn20/display_mode_vba_20v2.c
> @@ -177,10 +177,10 @@ static unsigned int CalculateVMAndRowBytes(
> bool *PTEBufferSizeNotExceeded,
> unsigned int *dpte_row_height,
> unsigned int *meta_row_height);
> -static double CalculateTWait(
> +double CalculateTWait(
> unsigned int PrefetchMode,
> double DRAMClockChangeLatency,
> - double UrgentLatencyPixelDataOnly,
> + double UrgentLatency,
> double SREnterPlusExitTime);
> static double CalculateRemoteSurfaceFlipDelay(
> struct display_mode_lib *mode_lib,
> @@ -2967,23 +2967,6 @@ static void dml20v2_DisplayPipeConfiguration(struct display_mode_lib *mode_lib)
> }
> }
>
> -static double CalculateTWait(
> - unsigned int PrefetchMode,
> - double DRAMClockChangeLatency,
> - double UrgentLatencyPixelDataOnly,
> - double SREnterPlusExitTime)
> -{
> - if (PrefetchMode == 0) {
> - return dml_max(
> - DRAMClockChangeLatency + UrgentLatencyPixelDataOnly,
> - dml_max(SREnterPlusExitTime, UrgentLatencyPixelDataOnly));
> - } else if (PrefetchMode == 1) {
> - return dml_max(SREnterPlusExitTime, UrgentLatencyPixelDataOnly);
> - } else {
> - return UrgentLatencyPixelDataOnly;
> - }
> -}
> -
> static double CalculateRemoteSurfaceFlipDelay(
> struct display_mode_lib *mode_lib,
> double VRatio,
> diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c b/drivers/gpu/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c
> index 6be14f55c78d..a3ef3638d979 100644
> --- a/drivers/gpu/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c
> +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c
> @@ -205,7 +205,7 @@ static unsigned int CalculateVMAndRowBytes(
> unsigned int *DPDE0BytesFrame,
> unsigned int *MetaPTEBytesFrame);
>
> -static double CalculateTWait(
> +double CalculateTWait(
> unsigned int PrefetchMode,
> double DRAMClockChangeLatency,
> double UrgentLatency,
> @@ -2980,23 +2980,6 @@ static void DisplayPipeConfiguration(struct display_mode_lib *mode_lib)
> }
> }
>
> -static double CalculateTWait(
> - unsigned int PrefetchMode,
> - double DRAMClockChangeLatency,
> - double UrgentLatency,
> - double SREnterPlusExitTime)
> -{
> - if (PrefetchMode == 0) {
> - return dml_max(
> - DRAMClockChangeLatency + UrgentLatency,
> - dml_max(SREnterPlusExitTime, UrgentLatency));
> - } else if (PrefetchMode == 1) {
> - return dml_max(SREnterPlusExitTime, UrgentLatency);
> - } else {
> - return UrgentLatency;
> - }
> -}
> -
> static double CalculateRemoteSurfaceFlipDelay(
> struct display_mode_lib *mode_lib,
> double VRatio,
> diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn30/display_mode_vba_30.c b/drivers/gpu/drm/amd/display/dc/dml/dcn30/display_mode_vba_30.c
> index 229548733177..74f5d9742f59 100644
> --- a/drivers/gpu/drm/amd/display/dc/dml/dcn30/display_mode_vba_30.c
> +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn30/display_mode_vba_30.c
> @@ -216,7 +216,7 @@ static unsigned int CalculateVMAndRowBytes(
> unsigned int *PTERequestSize,
> unsigned int *DPDE0BytesFrame,
> unsigned int *MetaPTEBytesFrame);
> -static double CalculateTWait(
> +double CalculateTWait(
> unsigned int PrefetchMode,
> double DRAMClockChangeLatency,
> double UrgentLatency,
> @@ -3191,22 +3191,6 @@ void dml30_CalculateBytePerPixelAnd256BBlockSizes(
> }
> }
>
> -static double CalculateTWait(
> - unsigned int PrefetchMode,
> - double DRAMClockChangeLatency,
> - double UrgentLatency,
> - double SREnterPlusExitTime)
> -{
> - if (PrefetchMode == 0) {
> - return dml_max(DRAMClockChangeLatency + UrgentLatency,
> - dml_max(SREnterPlusExitTime, UrgentLatency));
> - } else if (PrefetchMode == 1) {
> - return dml_max(SREnterPlusExitTime, UrgentLatency);
> - } else {
> - return UrgentLatency;
> - }
> -}
> -
> double dml30_CalculateWriteBackDISPCLK(
> enum source_format_class WritebackPixelFormat,
> double PixelClock,
> diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.c b/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.c
> index 58dc4c046cf4..4563342275f1 100644
> --- a/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.c
> +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.c
> @@ -230,7 +230,7 @@ static unsigned int CalculateVMAndRowBytes(
> unsigned int *PTERequestSize,
> int *DPDE0BytesFrame,
> int *MetaPTEBytesFrame);
> -static double CalculateTWait(unsigned int PrefetchMode, double DRAMClockChangeLatency, double UrgentLatency, double SREnterPlusExitTime);
> +double CalculateTWait(unsigned int PrefetchMode, double DRAMClockChangeLatency, double UrgentLatency, double SREnterPlusExitTime);
> static void CalculateRowBandwidth(
> bool GPUVMEnable,
> enum source_format_class SourcePixelFormat,
> @@ -3323,17 +3323,6 @@ static void DisplayPipeConfiguration(struct display_mode_lib *mode_lib)
> &dummysinglestring);
> }
>
> -static double CalculateTWait(unsigned int PrefetchMode, double DRAMClockChangeLatency, double UrgentLatency, double SREnterPlusExitTime)
> -{
> - if (PrefetchMode == 0) {
> - return dml_max(DRAMClockChangeLatency + UrgentLatency, dml_max(SREnterPlusExitTime, UrgentLatency));
> - } else if (PrefetchMode == 1) {
> - return dml_max(SREnterPlusExitTime, UrgentLatency);
> - } else {
> - return UrgentLatency;
> - }
> -}
> -
> double dml31_CalculateWriteBackDISPCLK(
> enum source_format_class WritebackPixelFormat,
> double PixelClock,
> diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn314/display_mode_vba_314.c b/drivers/gpu/drm/amd/display/dc/dml/dcn314/display_mode_vba_314.c
> index 7024412fe441..89a80eef42f4 100644
> --- a/drivers/gpu/drm/amd/display/dc/dml/dcn314/display_mode_vba_314.c
> +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn314/display_mode_vba_314.c
> @@ -244,7 +244,7 @@ static unsigned int CalculateVMAndRowBytes(
> unsigned int *PTERequestSize,
> int *DPDE0BytesFrame,
> int *MetaPTEBytesFrame);
> -static double CalculateTWait(unsigned int PrefetchMode, double DRAMClockChangeLatency, double UrgentLatency, double SREnterPlusExitTime);
> +double CalculateTWait(unsigned int PrefetchMode, double DRAMClockChangeLatency, double UrgentLatency, double SREnterPlusExitTime);
> static void CalculateRowBandwidth(
> bool GPUVMEnable,
> enum source_format_class SourcePixelFormat,
> @@ -3547,17 +3547,6 @@ static bool CalculateBytePerPixelAnd256BBlockSizes(
> return true;
> }
>
> -static double CalculateTWait(unsigned int PrefetchMode, double DRAMClockChangeLatency, double UrgentLatency, double SREnterPlusExitTime)
> -{
> - if (PrefetchMode == 0) {
> - return dml_max(DRAMClockChangeLatency + UrgentLatency, dml_max(SREnterPlusExitTime, UrgentLatency));
> - } else if (PrefetchMode == 1) {
> - return dml_max(SREnterPlusExitTime, UrgentLatency);
> - } else {
> - return UrgentLatency;
> - }
> -}
> -
> double dml314_CalculateWriteBackDISPCLK(
> enum source_format_class WritebackPixelFormat,
> double PixelClock,
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