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* [PATCH] drm/msm/a6xx: set ubwc config for A640 and A650
@ 2020-05-26  3:25 ` Jonathan Marek
  0 siblings, 0 replies; 4+ messages in thread
From: Jonathan Marek @ 2020-05-26  3:25 UTC (permalink / raw)
  To: freedreno
  Cc: Rob Clark, Sean Paul, David Airlie, Daniel Vetter, Jordan Crouse,
	Sharat Masetty, Akhil P Oommen,
	open list:DRM DRIVER FOR MSM ADRENO GPU,
	open list:DRM DRIVER FOR MSM ADRENO GPU, open list

This is required for A640 and A650 to be able to share UBWC-compressed
images with other HW such as display, which expect this configuration.

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
---
 drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 38 ++++++++++++++++++++++-----
 1 file changed, 32 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index 6f335ae179c8..aa004a261277 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -289,6 +289,37 @@ static void a6xx_set_hwcg(struct msm_gpu *gpu, bool state)
 	gpu_write(gpu, REG_A6XX_RBBM_CLOCK_CNTL, state ? 0x8aa8aa02 : 0);
 }
 
+static void a6xx_set_ubwc_config(struct msm_gpu *gpu)
+{
+	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
+	u32 lower_bit = 2;
+	u32 amsbc = 0;
+	u32 rgb565_predicator = 0;
+	u32 uavflagprd_inv = 0;
+
+	/* a618 is using the hw default values */
+	if (adreno_is_a618(adreno_gpu))
+		return;
+
+	if (adreno_is_a640(adreno_gpu))
+		amsbc = 1;
+
+	if (adreno_is_a650(adreno_gpu)) {
+		/* TODO: get ddr type from bootloader and use 2 for LPDDR4 */
+		lower_bit = 3;
+		amsbc = 1;
+		rgb565_predicator = 1;
+		uavflagprd_inv = 2;
+	}
+
+	gpu_write(gpu, REG_A6XX_RB_NC_MODE_CNTL,
+		rgb565_predicator << 11 | amsbc << 4 | lower_bit << 1);
+	gpu_write(gpu, REG_A6XX_TPL1_NC_MODE_CNTL, lower_bit << 1);
+	gpu_write(gpu, REG_A6XX_SP_NC_MODE_CNTL,
+		uavflagprd_inv >> 4 | lower_bit << 1);
+	gpu_write(gpu, REG_A6XX_UCHE_MODE_CNTL, lower_bit << 21);
+}
+
 static int a6xx_cp_init(struct msm_gpu *gpu)
 {
 	struct msm_ringbuffer *ring = gpu->rb[0];
@@ -478,12 +509,7 @@ static int a6xx_hw_init(struct msm_gpu *gpu)
 	/* Select CP0 to always count cycles */
 	gpu_write(gpu, REG_A6XX_CP_PERFCTR_CP_SEL_0, PERF_CP_ALWAYS_COUNT);
 
-	if (adreno_is_a630(adreno_gpu)) {
-		gpu_write(gpu, REG_A6XX_RB_NC_MODE_CNTL, 2 << 1);
-		gpu_write(gpu, REG_A6XX_TPL1_NC_MODE_CNTL, 2 << 1);
-		gpu_write(gpu, REG_A6XX_SP_NC_MODE_CNTL, 2 << 1);
-		gpu_write(gpu, REG_A6XX_UCHE_MODE_CNTL, 2 << 21);
-	}
+	a6xx_set_ubwc_config(gpu);
 
 	/* Enable fault detection */
 	gpu_write(gpu, REG_A6XX_RBBM_INTERFACE_HANG_INT_CNTL,
-- 
2.26.1


^ permalink raw reply related	[flat|nested] 4+ messages in thread
* [PATCH] drm/msm/a6xx: set ubwc config for A640 and A650
@ 2020-05-26  3:25 ` Jonathan Marek
  0 siblings, 0 replies; 4+ messages in thread
From: Jonathan Marek @ 2020-05-26  3:25 UTC (permalink / raw)
  To: freedreno
  Cc: David Airlie, open list:DRM DRIVER FOR MSM ADRENO GPU,
	Sharat Masetty, open list:DRM DRIVER FOR MSM ADRENO GPU,
	Akhil P Oommen, Sean Paul, open list

This is required for A640 and A650 to be able to share UBWC-compressed
images with other HW such as display, which expect this configuration.

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
---
 drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 38 ++++++++++++++++++++++-----
 1 file changed, 32 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index 6f335ae179c8..aa004a261277 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -289,6 +289,37 @@ static void a6xx_set_hwcg(struct msm_gpu *gpu, bool state)
 	gpu_write(gpu, REG_A6XX_RBBM_CLOCK_CNTL, state ? 0x8aa8aa02 : 0);
 }
 
+static void a6xx_set_ubwc_config(struct msm_gpu *gpu)
+{
+	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
+	u32 lower_bit = 2;
+	u32 amsbc = 0;
+	u32 rgb565_predicator = 0;
+	u32 uavflagprd_inv = 0;
+
+	/* a618 is using the hw default values */
+	if (adreno_is_a618(adreno_gpu))
+		return;
+
+	if (adreno_is_a640(adreno_gpu))
+		amsbc = 1;
+
+	if (adreno_is_a650(adreno_gpu)) {
+		/* TODO: get ddr type from bootloader and use 2 for LPDDR4 */
+		lower_bit = 3;
+		amsbc = 1;
+		rgb565_predicator = 1;
+		uavflagprd_inv = 2;
+	}
+
+	gpu_write(gpu, REG_A6XX_RB_NC_MODE_CNTL,
+		rgb565_predicator << 11 | amsbc << 4 | lower_bit << 1);
+	gpu_write(gpu, REG_A6XX_TPL1_NC_MODE_CNTL, lower_bit << 1);
+	gpu_write(gpu, REG_A6XX_SP_NC_MODE_CNTL,
+		uavflagprd_inv >> 4 | lower_bit << 1);
+	gpu_write(gpu, REG_A6XX_UCHE_MODE_CNTL, lower_bit << 21);
+}
+
 static int a6xx_cp_init(struct msm_gpu *gpu)
 {
 	struct msm_ringbuffer *ring = gpu->rb[0];
@@ -478,12 +509,7 @@ static int a6xx_hw_init(struct msm_gpu *gpu)
 	/* Select CP0 to always count cycles */
 	gpu_write(gpu, REG_A6XX_CP_PERFCTR_CP_SEL_0, PERF_CP_ALWAYS_COUNT);
 
-	if (adreno_is_a630(adreno_gpu)) {
-		gpu_write(gpu, REG_A6XX_RB_NC_MODE_CNTL, 2 << 1);
-		gpu_write(gpu, REG_A6XX_TPL1_NC_MODE_CNTL, 2 << 1);
-		gpu_write(gpu, REG_A6XX_SP_NC_MODE_CNTL, 2 << 1);
-		gpu_write(gpu, REG_A6XX_UCHE_MODE_CNTL, 2 << 21);
-	}
+	a6xx_set_ubwc_config(gpu);
 
 	/* Enable fault detection */
 	gpu_write(gpu, REG_A6XX_RBBM_INTERFACE_HANG_INT_CNTL,
-- 
2.26.1

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

^ permalink raw reply related	[flat|nested] 4+ messages in thread
* Re: [PATCH] drm/msm/a6xx: set ubwc config for A640 and A650
  2020-05-26  3:25 ` Jonathan Marek
@ 2020-05-26 16:40   ` Jordan Crouse
  -1 siblings, 0 replies; 4+ messages in thread
From: Jordan Crouse @ 2020-05-26 16:40 UTC (permalink / raw)
  To: Jonathan Marek
  Cc: freedreno, Rob Clark, Sean Paul, David Airlie, Daniel Vetter,
	Sharat Masetty, Akhil P Oommen,
	open list:DRM DRIVER FOR MSM ADRENO GPU,
	open list:DRM DRIVER FOR MSM ADRENO GPU, open list

On Mon, May 25, 2020 at 11:25:13PM -0400, Jonathan Marek wrote:
> This is required for A640 and A650 to be able to share UBWC-compressed
> images with other HW such as display, which expect this configuration.

> Signed-off-by: Jonathan Marek <jonathan@marek.ca>
> ---
>  drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 38 ++++++++++++++++++++++-----
>  1 file changed, 32 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
> index 6f335ae179c8..aa004a261277 100644
> --- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
> +++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
> @@ -289,6 +289,37 @@ static void a6xx_set_hwcg(struct msm_gpu *gpu, bool state)
>  	gpu_write(gpu, REG_A6XX_RBBM_CLOCK_CNTL, state ? 0x8aa8aa02 : 0);
>  }
>  
> +static void a6xx_set_ubwc_config(struct msm_gpu *gpu)
> +{
> +	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
> +	u32 lower_bit = 2;
> +	u32 amsbc = 0;
> +	u32 rgb565_predicator = 0;
> +	u32 uavflagprd_inv = 0;
> +

This hardware design has the amazing ability to make me sad every time I see it.

> +	/* a618 is using the hw default values */
> +	if (adreno_is_a618(adreno_gpu))
> +		return;
> +
I've been a recent convert to the cult of <linux/bitfields.h> and FIELD_PREP()
could help, maybe?

if (adreno_is_a640(adreno_gpu)) {
	rb_ncmode = FIELD_PREP(REG_A6XX_RB_NC_MODE_CNTL_AMSBC, 1);
	rb_ncmode |= FIELD_PREP(REG_A6XX_RB_NC_MODE_CNTL_HBB, 2);

	tpl1_ncmode  = FIELD_PREP(REG_A6XX_TPL1_NC_MODE_HBB, 2);

	sp_ncmode  = FIELD_PREP(REG_A6XX_TPL1_NC_MODE_HBB, 2);

	uchemode  = FIELD_PREP(REG_A6XX_UCHE_MODE_CNTL_HBB, 2);
} else if adreno_is_a650(adreno_gpu)) {
	rb_ncmode = FIELD_PREP(REG_A6XX_RB_NC_MODE_CNTL_AMSBC, 1);
	rb_ncmode |= FIELD_PREP(REG_A6XX_RB_NC_MODE_CNTL_HBB, 3);
	rb_ncmode |= FIELD_PREP(REG_A6XX_RB_NC_MODE_CNTL_RGB565, 1);

	tpl1_ncmode  = FIELD_PREP(REG_A6XX_TPL1_NC_MODE_HBB, 3);

	sp_ncmode  = FIELD_PREP(REG_A6XX_TPL1_NC_MODE_HBB, 3);
	sp_ncmode  |= FIELD_PREP(REG_A6XX_TPL1_NC_MODE_UAVFLAGPRD_INV, 2);

	uchemode  = FIELD_PREP(REG_A6XX_UCHE_MODE_CNTL_HBB, 2);
}

I'm not sure if that is any clearer or not. Perhaps this is a problem for the
next person to add a new target. Regardless the code is programming the
hardware correctly so...

Reviewed-by: Jordan Crouse <jcrouse@codeaurora.org>


> +	if (adreno_is_a640(adreno_gpu))
> +		amsbc = 1;
> +
> +	if (adreno_is_a650(adreno_gpu)) {
> +		/* TODO: get ddr type from bootloader and use 2 for LPDDR4 */
> +		lower_bit = 3;
> +		amsbc = 1;
> +		rgb565_predicator = 1;
> +		uavflagprd_inv = 2;
> +	}
> +
> +	gpu_write(gpu, REG_A6XX_RB_NC_MODE_CNTL,
> +		rgb565_predicator << 11 | amsbc << 4 | lower_bit << 1);
> +	gpu_write(gpu, REG_A6XX_TPL1_NC_MODE_CNTL, lower_bit << 1);
> +	gpu_write(gpu, REG_A6XX_SP_NC_MODE_CNTL,
> +		uavflagprd_inv >> 4 | lower_bit << 1);
> +	gpu_write(gpu, REG_A6XX_UCHE_MODE_CNTL, lower_bit << 21);
> +}
> +
>  static int a6xx_cp_init(struct msm_gpu *gpu)
>  {
>  	struct msm_ringbuffer *ring = gpu->rb[0];
> @@ -478,12 +509,7 @@ static int a6xx_hw_init(struct msm_gpu *gpu)
>  	/* Select CP0 to always count cycles */
>  	gpu_write(gpu, REG_A6XX_CP_PERFCTR_CP_SEL_0, PERF_CP_ALWAYS_COUNT);
>  
> -	if (adreno_is_a630(adreno_gpu)) {
> -		gpu_write(gpu, REG_A6XX_RB_NC_MODE_CNTL, 2 << 1);
> -		gpu_write(gpu, REG_A6XX_TPL1_NC_MODE_CNTL, 2 << 1);
> -		gpu_write(gpu, REG_A6XX_SP_NC_MODE_CNTL, 2 << 1);
> -		gpu_write(gpu, REG_A6XX_UCHE_MODE_CNTL, 2 << 21);
> -	}
> +	a6xx_set_ubwc_config(gpu);
>  
>  	/* Enable fault detection */
>  	gpu_write(gpu, REG_A6XX_RBBM_INTERFACE_HANG_INT_CNTL,
> -- 
> 2.26.1
> 

-- 
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project

^ permalink raw reply	[flat|nested] 4+ messages in thread
* Re: [PATCH] drm/msm/a6xx: set ubwc config for A640 and A650
@ 2020-05-26 16:40   ` Jordan Crouse
  0 siblings, 0 replies; 4+ messages in thread
From: Jordan Crouse @ 2020-05-26 16:40 UTC (permalink / raw)
  To: Jonathan Marek
  Cc: David Airlie, freedreno, Sharat Masetty, Akhil P Oommen,
	open list:DRM DRIVER FOR MSM ADRENO GPU, open list,
	open list:DRM DRIVER FOR MSM ADRENO GPU, Sean Paul

On Mon, May 25, 2020 at 11:25:13PM -0400, Jonathan Marek wrote:
> This is required for A640 and A650 to be able to share UBWC-compressed
> images with other HW such as display, which expect this configuration.

> Signed-off-by: Jonathan Marek <jonathan@marek.ca>
> ---
>  drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 38 ++++++++++++++++++++++-----
>  1 file changed, 32 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
> index 6f335ae179c8..aa004a261277 100644
> --- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
> +++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
> @@ -289,6 +289,37 @@ static void a6xx_set_hwcg(struct msm_gpu *gpu, bool state)
>  	gpu_write(gpu, REG_A6XX_RBBM_CLOCK_CNTL, state ? 0x8aa8aa02 : 0);
>  }
>  
> +static void a6xx_set_ubwc_config(struct msm_gpu *gpu)
> +{
> +	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
> +	u32 lower_bit = 2;
> +	u32 amsbc = 0;
> +	u32 rgb565_predicator = 0;
> +	u32 uavflagprd_inv = 0;
> +

This hardware design has the amazing ability to make me sad every time I see it.

> +	/* a618 is using the hw default values */
> +	if (adreno_is_a618(adreno_gpu))
> +		return;
> +
I've been a recent convert to the cult of <linux/bitfields.h> and FIELD_PREP()
could help, maybe?

if (adreno_is_a640(adreno_gpu)) {
	rb_ncmode = FIELD_PREP(REG_A6XX_RB_NC_MODE_CNTL_AMSBC, 1);
	rb_ncmode |= FIELD_PREP(REG_A6XX_RB_NC_MODE_CNTL_HBB, 2);

	tpl1_ncmode  = FIELD_PREP(REG_A6XX_TPL1_NC_MODE_HBB, 2);

	sp_ncmode  = FIELD_PREP(REG_A6XX_TPL1_NC_MODE_HBB, 2);

	uchemode  = FIELD_PREP(REG_A6XX_UCHE_MODE_CNTL_HBB, 2);
} else if adreno_is_a650(adreno_gpu)) {
	rb_ncmode = FIELD_PREP(REG_A6XX_RB_NC_MODE_CNTL_AMSBC, 1);
	rb_ncmode |= FIELD_PREP(REG_A6XX_RB_NC_MODE_CNTL_HBB, 3);
	rb_ncmode |= FIELD_PREP(REG_A6XX_RB_NC_MODE_CNTL_RGB565, 1);

	tpl1_ncmode  = FIELD_PREP(REG_A6XX_TPL1_NC_MODE_HBB, 3);

	sp_ncmode  = FIELD_PREP(REG_A6XX_TPL1_NC_MODE_HBB, 3);
	sp_ncmode  |= FIELD_PREP(REG_A6XX_TPL1_NC_MODE_UAVFLAGPRD_INV, 2);

	uchemode  = FIELD_PREP(REG_A6XX_UCHE_MODE_CNTL_HBB, 2);
}

I'm not sure if that is any clearer or not. Perhaps this is a problem for the
next person to add a new target. Regardless the code is programming the
hardware correctly so...

Reviewed-by: Jordan Crouse <jcrouse@codeaurora.org>


> +	if (adreno_is_a640(adreno_gpu))
> +		amsbc = 1;
> +
> +	if (adreno_is_a650(adreno_gpu)) {
> +		/* TODO: get ddr type from bootloader and use 2 for LPDDR4 */
> +		lower_bit = 3;
> +		amsbc = 1;
> +		rgb565_predicator = 1;
> +		uavflagprd_inv = 2;
> +	}
> +
> +	gpu_write(gpu, REG_A6XX_RB_NC_MODE_CNTL,
> +		rgb565_predicator << 11 | amsbc << 4 | lower_bit << 1);
> +	gpu_write(gpu, REG_A6XX_TPL1_NC_MODE_CNTL, lower_bit << 1);
> +	gpu_write(gpu, REG_A6XX_SP_NC_MODE_CNTL,
> +		uavflagprd_inv >> 4 | lower_bit << 1);
> +	gpu_write(gpu, REG_A6XX_UCHE_MODE_CNTL, lower_bit << 21);
> +}
> +
>  static int a6xx_cp_init(struct msm_gpu *gpu)
>  {
>  	struct msm_ringbuffer *ring = gpu->rb[0];
> @@ -478,12 +509,7 @@ static int a6xx_hw_init(struct msm_gpu *gpu)
>  	/* Select CP0 to always count cycles */
>  	gpu_write(gpu, REG_A6XX_CP_PERFCTR_CP_SEL_0, PERF_CP_ALWAYS_COUNT);
>  
> -	if (adreno_is_a630(adreno_gpu)) {
> -		gpu_write(gpu, REG_A6XX_RB_NC_MODE_CNTL, 2 << 1);
> -		gpu_write(gpu, REG_A6XX_TPL1_NC_MODE_CNTL, 2 << 1);
> -		gpu_write(gpu, REG_A6XX_SP_NC_MODE_CNTL, 2 << 1);
> -		gpu_write(gpu, REG_A6XX_UCHE_MODE_CNTL, 2 << 21);
> -	}
> +	a6xx_set_ubwc_config(gpu);
>  
>  	/* Enable fault detection */
>  	gpu_write(gpu, REG_A6XX_RBBM_INTERFACE_HANG_INT_CNTL,
> -- 
> 2.26.1
> 

-- 
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

^ permalink raw reply	[flat|nested] 4+ messages in thread
end of thread, other threads:[~2020-05-26 16:41 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-05-26  3:25 [PATCH] drm/msm/a6xx: set ubwc config for A640 and A650 Jonathan Marek
2020-05-26  3:25 ` Jonathan Marek
2020-05-26 16:40 ` Jordan Crouse
2020-05-26 16:40   ` Jordan Crouse

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