[PATCH 1/2] drm/amd/display: setup system context in dm_init

[PATCH 1/2] drm/amd/display: setup system context in dm_init

[Yifan Zhang]

Change-Id: I831a5ade8b87c23d21a63d08cc4d338468769e2b
Signed-off-by: Yifan Zhang <yifan1.zhang@amd.com>
---
 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 61 +++++++++++++++++++
 1 file changed, 61 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 3cf4e08931bb..aaff8800c7a0 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -887,12 +887,67 @@ static void amdgpu_check_debugfs_connector_property_change(struct amdgpu_device
 	}
 }
 
+static void mmhub_read_system_context(struct amdgpu_device *adev, struct dc_phy_addr_space_config *pa_config)
+{
+	uint64_t pt_base;
+	uint32_t logical_addr_low;
+	uint32_t logical_addr_high;
+	uint32_t agp_base, agp_bot, agp_top;
+	PHYSICAL_ADDRESS_LOC page_table_start, page_table_end, page_table_base;
+
+	logical_addr_low  = min(adev->gmc.fb_start, adev->gmc.agp_start) >> 18;
+	pt_base = amdgpu_gmc_pd_addr(adev->gart.bo);
+
+	if (adev->apu_flags & AMD_APU_IS_RAVEN2)
+		/*
+		 * Raven2 has a HW issue that it is unable to use the vram which
+		 * is out of MC_VM_SYSTEM_APERTURE_HIGH_ADDR. So here is the
+		 * workaround that increase system aperture high address (add 1)
+		 * to get rid of the VM fault and hardware hang.
+		 */
+		logical_addr_high = max((adev->gmc.fb_end >> 18) + 0x1, adev->gmc.agp_end >> 18);
+	else
+		logical_addr_high = max(adev->gmc.fb_end, adev->gmc.agp_end) >> 18;
+
+	agp_base = 0;
+	agp_bot = adev->gmc.agp_start >> 24;
+	agp_top = adev->gmc.agp_end >> 24;
+
+
+	page_table_start.high_part = (u32)(adev->gmc.gart_start >> 44) & 0xF;
+	page_table_start.low_part = (u32)(adev->gmc.gart_start >> 12);
+	page_table_end.high_part = (u32)(adev->gmc.gart_end >> 44) & 0xF;
+	page_table_end.low_part = (u32)(adev->gmc.gart_end >> 12);
+	page_table_base.high_part = upper_32_bits(pt_base) & 0xF;
+	page_table_base.low_part = lower_32_bits(pt_base);
+
+	pa_config->system_aperture.start_addr = (uint64_t)logical_addr_low << 18;
+	pa_config->system_aperture.end_addr = (uint64_t)logical_addr_high << 18;
+
+	pa_config->system_aperture.agp_base = (uint64_t)agp_base << 24 ;
+	pa_config->system_aperture.agp_bot = (uint64_t)agp_bot << 24;
+	pa_config->system_aperture.agp_top = (uint64_t)agp_top << 24;
+
+	pa_config->system_aperture.fb_base = adev->gmc.fb_start;
+	pa_config->system_aperture.fb_offset = adev->gmc.aper_base;
+	pa_config->system_aperture.fb_top = adev->gmc.fb_end;
+
+	pa_config->gart_config.page_table_start_addr = page_table_start.quad_part << 12;
+	pa_config->gart_config.page_table_end_addr = page_table_end.quad_part << 12;
+	pa_config->gart_config.page_table_base_addr = page_table_base.quad_part;
+
+	pa_config->is_hvm_enabled = 0;
+
+}
+
+
 static int amdgpu_dm_init(struct amdgpu_device *adev)
 {
 	struct dc_init_data init_data;
 #ifdef CONFIG_DRM_AMD_DC_HDCP
 	struct dc_callback_init init_params;
 #endif
+	struct dc_phy_addr_space_config pa_config;
 	int r;
 
 	adev->dm.ddev = adev_to_drm(adev);
@@ -1040,6 +1095,12 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
 		goto error;
 	}
 
+	mmhub_read_system_context(adev, &pa_config);
+
+	// Call the DC init_memory func
+	dc_setup_system_context(adev->dm.dc, &pa_config);
+
+
 	DRM_DEBUG_DRIVER("KMS initialized.\n");
 
 	return 0;
-- 
2.17.1

_______________________________________________
amd-gfx mailing list
amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx

[PATCH 2/2] drm/amd/display: add S/G support for Renoir

[Yifan Zhang]

Change-Id: I382a5eac1002a6cb80500c08888e593cba95e2da
Signed-off-by: Yifan Zhang <yifan1.zhang@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_display.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
index 8e1d1aaead7c..9e92d2a070ac 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
@@ -528,6 +528,10 @@ uint32_t amdgpu_display_supported_domains(struct amdgpu_device *adev,
 			    (adev->apu_flags & AMD_APU_IS_PICASSO))
 				domain |= AMDGPU_GEM_DOMAIN_GTT;
 			break;
+		case CHIP_RENOIR:
+			domain |= AMDGPU_GEM_DOMAIN_GTT;
+			break;
+
 		default:
 			break;
 		}
-- 
2.17.1

_______________________________________________
amd-gfx mailing list
amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx

Re: [PATCH 1/2] drm/amd/display: setup system context in dm_init

[Kazlauskas, Nicholas]

On 2020-10-14 3:04 a.m., Yifan Zhang wrote:
> Change-Id: I831a5ade8b87c23d21a63d08cc4d338468769e2b
> Signed-off-by: Yifan Zhang <yifan1.zhang@amd.com>
> ---
>   .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 61 +++++++++++++++++++
>   1 file changed, 61 insertions(+)
> 
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> index 3cf4e08931bb..aaff8800c7a0 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> @@ -887,12 +887,67 @@ static void amdgpu_check_debugfs_connector_property_change(struct amdgpu_device
>   	}
>   }
>   
> +static void mmhub_read_system_context(struct amdgpu_device *adev, struct dc_phy_addr_space_config *pa_config)
> +{
> +	uint64_t pt_base;
> +	uint32_t logical_addr_low;
> +	uint32_t logical_addr_high;
> +	uint32_t agp_base, agp_bot, agp_top;
> +	PHYSICAL_ADDRESS_LOC page_table_start, page_table_end, page_table_base;
> +
> +	logical_addr_low  = min(adev->gmc.fb_start, adev->gmc.agp_start) >> 18;
> +	pt_base = amdgpu_gmc_pd_addr(adev->gart.bo);
> +
> +	if (adev->apu_flags & AMD_APU_IS_RAVEN2)
> +		/*
> +		 * Raven2 has a HW issue that it is unable to use the vram which
> +		 * is out of MC_VM_SYSTEM_APERTURE_HIGH_ADDR. So here is the
> +		 * workaround that increase system aperture high address (add 1)
> +		 * to get rid of the VM fault and hardware hang.
> +		 */
> +		logical_addr_high = max((adev->gmc.fb_end >> 18) + 0x1, adev->gmc.agp_end >> 18);
> +	else
> +		logical_addr_high = max(adev->gmc.fb_end, adev->gmc.agp_end) >> 18;
> +
> +	agp_base = 0;
> +	agp_bot = adev->gmc.agp_start >> 24;
> +	agp_top = adev->gmc.agp_end >> 24;
> +
> +
> +	page_table_start.high_part = (u32)(adev->gmc.gart_start >> 44) & 0xF;
> +	page_table_start.low_part = (u32)(adev->gmc.gart_start >> 12);
> +	page_table_end.high_part = (u32)(adev->gmc.gart_end >> 44) & 0xF;
> +	page_table_end.low_part = (u32)(adev->gmc.gart_end >> 12);
> +	page_table_base.high_part = upper_32_bits(pt_base) & 0xF;
> +	page_table_base.low_part = lower_32_bits(pt_base);
> +
> +	pa_config->system_aperture.start_addr = (uint64_t)logical_addr_low << 18;
> +	pa_config->system_aperture.end_addr = (uint64_t)logical_addr_high << 18;
> +
> +	pa_config->system_aperture.agp_base = (uint64_t)agp_base << 24 ;
> +	pa_config->system_aperture.agp_bot = (uint64_t)agp_bot << 24;
> +	pa_config->system_aperture.agp_top = (uint64_t)agp_top << 24;
> +
> +	pa_config->system_aperture.fb_base = adev->gmc.fb_start;
> +	pa_config->system_aperture.fb_offset = adev->gmc.aper_base;
> +	pa_config->system_aperture.fb_top = adev->gmc.fb_end;
> +
> +	pa_config->gart_config.page_table_start_addr = page_table_start.quad_part << 12;
> +	pa_config->gart_config.page_table_end_addr = page_table_end.quad_part << 12;
> +	pa_config->gart_config.page_table_base_addr = page_table_base.quad_part;
> +
> +	pa_config->is_hvm_enabled = 0;
> +
> +}
> +
> +
>   static int amdgpu_dm_init(struct amdgpu_device *adev)
>   {
>   	struct dc_init_data init_data;
>   #ifdef CONFIG_DRM_AMD_DC_HDCP
>   	struct dc_callback_init init_params;
>   #endif
> +	struct dc_phy_addr_space_config pa_config;
>   	int r;
>   
>   	adev->dm.ddev = adev_to_drm(adev);
> @@ -1040,6 +1095,12 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
>   		goto error;
>   	}
>   
> +	mmhub_read_system_context(adev, &pa_config);
> +
> +	// Call the DC init_memory func
> +	dc_setup_system_context(adev->dm.dc, &pa_config);
> +
> +

The dc_setup_system_context should come directly after dc_hardware_init().

With that fixed this series is

Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>

There's the vmid module as well that could be created after if needed 
but for s/g suport alone that's not necessary.

Regards,
Nicholas Kazlauskas

>   	DRM_DEBUG_DRIVER("KMS initialized.\n");
>   
>   	return 0;
> 

_______________________________________________
amd-gfx mailing list
amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx

Re: [PATCH 1/2] drm/amd/display: setup system context in dm_init

[Kazlauskas, Nicholas]

On 2020-10-14 9:20 a.m., Kazlauskas, Nicholas wrote:
> On 2020-10-14 3:04 a.m., Yifan Zhang wrote:
>> Change-Id: I831a5ade8b87c23d21a63d08cc4d338468769e2b
>> Signed-off-by: Yifan Zhang <yifan1.zhang@amd.com>
>> ---
>>   .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 61 +++++++++++++++++++
>>   1 file changed, 61 insertions(+)
>>
>> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c 
>> b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
>> index 3cf4e08931bb..aaff8800c7a0 100644
>> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
>> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
>> @@ -887,12 +887,67 @@ static void 
>> amdgpu_check_debugfs_connector_property_change(struct amdgpu_device
>>       }
>>   }
>> +static void mmhub_read_system_context(struct amdgpu_device *adev, 
>> struct dc_phy_addr_space_config *pa_config)
>> +{
>> +    uint64_t pt_base;
>> +    uint32_t logical_addr_low;
>> +    uint32_t logical_addr_high;
>> +    uint32_t agp_base, agp_bot, agp_top;
>> +    PHYSICAL_ADDRESS_LOC page_table_start, page_table_end, 
>> page_table_base;
>> +
>> +    logical_addr_low  = min(adev->gmc.fb_start, adev->gmc.agp_start) 
>> >> 18;
>> +    pt_base = amdgpu_gmc_pd_addr(adev->gart.bo);
>> +
>> +    if (adev->apu_flags & AMD_APU_IS_RAVEN2)
>> +        /*
>> +         * Raven2 has a HW issue that it is unable to use the vram which
>> +         * is out of MC_VM_SYSTEM_APERTURE_HIGH_ADDR. So here is the
>> +         * workaround that increase system aperture high address (add 1)
>> +         * to get rid of the VM fault and hardware hang.
>> +         */
>> +        logical_addr_high = max((adev->gmc.fb_end >> 18) + 0x1, 
>> adev->gmc.agp_end >> 18);
>> +    else
>> +        logical_addr_high = max(adev->gmc.fb_end, adev->gmc.agp_end) 
>> >> 18;
>> +
>> +    agp_base = 0;
>> +    agp_bot = adev->gmc.agp_start >> 24;
>> +    agp_top = adev->gmc.agp_end >> 24;
>> +
>> +
>> +    page_table_start.high_part = (u32)(adev->gmc.gart_start >> 44) & 
>> 0xF;
>> +    page_table_start.low_part = (u32)(adev->gmc.gart_start >> 12);
>> +    page_table_end.high_part = (u32)(adev->gmc.gart_end >> 44) & 0xF;
>> +    page_table_end.low_part = (u32)(adev->gmc.gart_end >> 12);
>> +    page_table_base.high_part = upper_32_bits(pt_base) & 0xF;
>> +    page_table_base.low_part = lower_32_bits(pt_base);
>> +
>> +    pa_config->system_aperture.start_addr = 
>> (uint64_t)logical_addr_low << 18;
>> +    pa_config->system_aperture.end_addr = (uint64_t)logical_addr_high 
>> << 18;
>> +
>> +    pa_config->system_aperture.agp_base = (uint64_t)agp_base << 24 ;
>> +    pa_config->system_aperture.agp_bot = (uint64_t)agp_bot << 24;
>> +    pa_config->system_aperture.agp_top = (uint64_t)agp_top << 24;
>> +
>> +    pa_config->system_aperture.fb_base = adev->gmc.fb_start;
>> +    pa_config->system_aperture.fb_offset = adev->gmc.aper_base;
>> +    pa_config->system_aperture.fb_top = adev->gmc.fb_end;
>> +
>> +    pa_config->gart_config.page_table_start_addr = 
>> page_table_start.quad_part << 12;
>> +    pa_config->gart_config.page_table_end_addr = 
>> page_table_end.quad_part << 12;
>> +    pa_config->gart_config.page_table_base_addr = 
>> page_table_base.quad_part;
>> +
>> +    pa_config->is_hvm_enabled = 0;
>> +
>> +}
>> +
>> +
>>   static int amdgpu_dm_init(struct amdgpu_device *adev)
>>   {
>>       struct dc_init_data init_data;
>>   #ifdef CONFIG_DRM_AMD_DC_HDCP
>>       struct dc_callback_init init_params;
>>   #endif
>> +    struct dc_phy_addr_space_config pa_config;
>>       int r;
>>       adev->dm.ddev = adev_to_drm(adev);
>> @@ -1040,6 +1095,12 @@ static int amdgpu_dm_init(struct amdgpu_device 
>> *adev)
>>           goto error;
>>       }
>> +    mmhub_read_system_context(adev, &pa_config);
>> +
>> +    // Call the DC init_memory func
>> +    dc_setup_system_context(adev->dm.dc, &pa_config);
>> +
>> +
> 
> The dc_setup_system_context should come directly after dc_hardware_init().
> 
> With that fixed this series is
> 
> Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
> 
> There's the vmid module as well that could be created after if needed 
> but for s/g suport alone that's not necessary.
> 
> Regards,
> Nicholas Kazlauskas

Actually, the commit messages could use some work too - would be good to 
have at least a brief why/how description.

Don't forget to drop the Change-Id as well.

Regards,
Nicholas Kazlauskas

> 
>>       DRM_DEBUG_DRIVER("KMS initialized.\n");
>>       return 0;
>>
> 
> _______________________________________________
> amd-gfx mailing list
> amd-gfx@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/amd-gfx 
> 

_______________________________________________
amd-gfx mailing list
amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx

Re: [PATCH 1/2] drm/amd/display: setup system context in dm_init

[Matt Coffin]

[-- Attachment #1: Type: text/plain, Size: 5499 bytes --]

Hello all,

I just bisected an issue introduced recently for me where I get screen
corruption before even getting a TTY, and it came down to this commit.

I've got a Navi10 card, and after this commit all that is displayed is a
blank screen (with some obvious corruption artifacts), before I even get
to a tty.

If you'd rather a GitLab issue, just let me know in a reply and I can
file one, but I thought it would be easier to ping those involved since
I already bisected the issue.

I've attached a log of a boot/shutdown sequence from this commit on
amd-staging-drm-next to aid with debugging.

Let me know if you need help reproducing, or fixing. I haven't had my
hands in the display/dc code at all yet, so it would take me some time
to ramp up but I'd be more than willing to help if necessary.

Thanks in advance,
Matt

On 10/14/20 7:20 AM, Kazlauskas, Nicholas wrote:
> On 2020-10-14 3:04 a.m., Yifan Zhang wrote:
>> Change-Id: I831a5ade8b87c23d21a63d08cc4d338468769e2b
>> Signed-off-by: Yifan Zhang <yifan1.zhang@amd.com>
>> ---
>>   .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 61 +++++++++++++++++++
>>   1 file changed, 61 insertions(+)
>>
>> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
>> b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
>> index 3cf4e08931bb..aaff8800c7a0 100644
>> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
>> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
>> @@ -887,12 +887,67 @@ static void
>> amdgpu_check_debugfs_connector_property_change(struct amdgpu_device
>>       }
>>   }
>>   +static void mmhub_read_system_context(struct amdgpu_device *adev,
>> struct dc_phy_addr_space_config *pa_config)
>> +{
>> +    uint64_t pt_base;
>> +    uint32_t logical_addr_low;
>> +    uint32_t logical_addr_high;
>> +    uint32_t agp_base, agp_bot, agp_top;
>> +    PHYSICAL_ADDRESS_LOC page_table_start, page_table_end,
>> page_table_base;
>> +
>> +    logical_addr_low  = min(adev->gmc.fb_start, adev->gmc.agp_start)
>> >> 18;
>> +    pt_base = amdgpu_gmc_pd_addr(adev->gart.bo);
>> +
>> +    if (adev->apu_flags & AMD_APU_IS_RAVEN2)
>> +        /*
>> +         * Raven2 has a HW issue that it is unable to use the vram which
>> +         * is out of MC_VM_SYSTEM_APERTURE_HIGH_ADDR. So here is the
>> +         * workaround that increase system aperture high address (add 1)
>> +         * to get rid of the VM fault and hardware hang.
>> +         */
>> +        logical_addr_high = max((adev->gmc.fb_end >> 18) + 0x1,
>> adev->gmc.agp_end >> 18);
>> +    else
>> +        logical_addr_high = max(adev->gmc.fb_end, adev->gmc.agp_end)
>> >> 18;
>> +
>> +    agp_base = 0;
>> +    agp_bot = adev->gmc.agp_start >> 24;
>> +    agp_top = adev->gmc.agp_end >> 24;
>> +
>> +
>> +    page_table_start.high_part = (u32)(adev->gmc.gart_start >> 44) &
>> 0xF;
>> +    page_table_start.low_part = (u32)(adev->gmc.gart_start >> 12);
>> +    page_table_end.high_part = (u32)(adev->gmc.gart_end >> 44) & 0xF;
>> +    page_table_end.low_part = (u32)(adev->gmc.gart_end >> 12);
>> +    page_table_base.high_part = upper_32_bits(pt_base) & 0xF;
>> +    page_table_base.low_part = lower_32_bits(pt_base);
>> +
>> +    pa_config->system_aperture.start_addr =
>> (uint64_t)logical_addr_low << 18;
>> +    pa_config->system_aperture.end_addr = (uint64_t)logical_addr_high
>> << 18;
>> +
>> +    pa_config->system_aperture.agp_base = (uint64_t)agp_base << 24 ;
>> +    pa_config->system_aperture.agp_bot = (uint64_t)agp_bot << 24;
>> +    pa_config->system_aperture.agp_top = (uint64_t)agp_top << 24;
>> +
>> +    pa_config->system_aperture.fb_base = adev->gmc.fb_start;
>> +    pa_config->system_aperture.fb_offset = adev->gmc.aper_base;
>> +    pa_config->system_aperture.fb_top = adev->gmc.fb_end;
>> +
>> +    pa_config->gart_config.page_table_start_addr =
>> page_table_start.quad_part << 12;
>> +    pa_config->gart_config.page_table_end_addr =
>> page_table_end.quad_part << 12;
>> +    pa_config->gart_config.page_table_base_addr =
>> page_table_base.quad_part;
>> +
>> +    pa_config->is_hvm_enabled = 0;
>> +
>> +}
>> +
>> +
>>   static int amdgpu_dm_init(struct amdgpu_device *adev)
>>   {
>>       struct dc_init_data init_data;
>>   #ifdef CONFIG_DRM_AMD_DC_HDCP
>>       struct dc_callback_init init_params;
>>   #endif
>> +    struct dc_phy_addr_space_config pa_config;
>>       int r;
>>         adev->dm.ddev = adev_to_drm(adev);
>> @@ -1040,6 +1095,12 @@ static int amdgpu_dm_init(struct amdgpu_device
>> *adev)
>>           goto error;
>>       }
>>   +    mmhub_read_system_context(adev, &pa_config);
>> +
>> +    // Call the DC init_memory func
>> +    dc_setup_system_context(adev->dm.dc, &pa_config);
>> +
>> +
> 
> The dc_setup_system_context should come directly after dc_hardware_init().
> 
> With that fixed this series is
> 
> Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
> 
> There's the vmid module as well that could be created after if needed
> but for s/g suport alone that's not necessary.
> 
> Regards,
> Nicholas Kazlauskas
> 
>>       DRM_DEBUG_DRIVER("KMS initialized.\n");
>>         return 0;
>>
> 
> _______________________________________________
> amd-gfx mailing list
> amd-gfx@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/amd-gfx



[-- Attachment #2: screen-corruption-before-tty.log.xz --]
[-- Type: application/x-xz, Size: 24404 bytes --]

[-- Attachment #3: Type: text/plain, Size: 154 bytes --]

_______________________________________________
amd-gfx mailing list
amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx