diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/1991-drm-amdgpu-gmc9-set-vram_width-properly-for-SR-IOV.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/1991-drm-amdgpu-gmc9-set-vram_width-properly-for-SR-IOV.patch | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/1991-drm-amdgpu-gmc9-set-vram_width-properly-for-SR-IOV.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/1991-drm-amdgpu-gmc9-set-vram_width-properly-for-SR-IOV.patch new file mode 100644 index 00000000..ac62cbdc --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/1991-drm-amdgpu-gmc9-set-vram_width-properly-for-SR-IOV.patch @@ -0,0 +1,42 @@ +From f1c08cd5c424814dd37cb1efa97aad069dddec5b Mon Sep 17 00:00:00 2001 +From: Alex Deucher <alexander.deucher@amd.com> +Date: Fri, 17 May 2019 09:31:43 -0500 +Subject: [PATCH 1991/2940] drm/amdgpu/gmc9: set vram_width properly for SR-IOV + +For SR-IOV, vram_width can't be read from ATOM as +RAVEN, and DF related registers is not readable, so hardcord +is the only way to set the correct vram_width. + +Reviewed-by: Yintian Tao <yttao@amd.com> +Signed-off-by: Trigger Huang <Trigger.Huang@amd.com> +Signed-off-by: Yintian Tao <yttao@amd.com> +Signed-off-by: Alex Deucher <alexander.deucher@amd.com> +--- + drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 10 +++++++++- + 1 file changed, 9 insertions(+), 1 deletion(-) + +diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c +index e04975170f83..2d6fb6dff58c 100644 +--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c ++++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c +@@ -832,8 +832,16 @@ static int gmc_v9_0_mc_init(struct amdgpu_device *adev) + int chansize, numchan; + int r; + +- if (amdgpu_emu_mode != 1) ++ if (amdgpu_sriov_vf(adev)) { ++ /* For Vega10 SR-IOV, vram_width can't be read from ATOM as RAVEN, ++ * and DF related registers is not readable, seems hardcord is the ++ * only way to set the correct vram_width ++ */ ++ adev->gmc.vram_width = 2048; ++ } else if (amdgpu_emu_mode != 1) { + adev->gmc.vram_width = amdgpu_atomfirmware_get_vram_width(adev); ++ } ++ + if (!adev->gmc.vram_width) { + /* hbm memory channel size */ + if (adev->flags & AMD_IS_APU) +-- +2.17.1 + |