Attachment 136321 Details for Bug 104275 – DC scatter gather patch

[patch] DC scatter gather patch

0001-drm-amd-display-Enable-VM-support-only-on-APUs-newer.patch (text/plain), 1.43 KB, created by Harry Wentland on 2017-12-20 14:31:03 UTC

(hide)

Description:

Filename:

MIME Type:

Creator: Harry Wentland

Created: 2017-12-20 14:31:03 UTC

Size: 1.43 KB

patch

obsolete

>From e18c815152986dd15dd7c4362905513f585114b5 Mon Sep 17 00:00:00 2001
>From: Harry Wentland <harry.wentland@amd.com>
>Date: Mon, 30 Oct 2017 13:41:51 -0400
>Subject: [PATCH] drm/amd/display: Enable VM support only on APUs newer than CZ
>
>VM support is only available for CZ and newer APUs. Trying to
>enable it for dGPU will blow up in DC.
>
>v2: Don't enable gpu_vm_support for Raven yet since it leads to
>    a black screen. Need to debug this further before enabling.
>
>Signed-off-by: Harry Wentland <harry.wentland@amd.com>
>Suggested-by: Alex Deucher <alexander.deucher@amd.com>
>CC: Christian Koenig <christian.koenig@amd.com>
>---
> drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 9 +++++++++
> 1 file changed, 9 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 4d1b90f1f4ab..53ccbc3b5a75 100644
>--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
>+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
>@@ -427,6 +427,15 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
> 		amdgpu_dm_initialize_fbc(adev);
> 	init_data.fbc_gpu_addr = adev->dm.compressor.gpu_addr;
> #endif
>+
>+	/*
>+	 * TODO debug why this doesn't work on Raven
>+	 */
>+	if (adev->flags & AMD_IS_APU &&
>+	    adev->asic_type >= CHIP_CARRIZO &&
>+	    adev->asic_type < CHIP_RAVEN)
>+		init_data.flags.gpu_vm_support = true;
>+
> 	/* Display Core create. */
> 	adev->dm.dc = dc_create(&init_data);
> 
>-- 
>2.14.1
>

Actions: View | Splinter Review

Attachments on bug 104275: 136186 | 136187 | 136191 | 136321

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.