From 067e75b3d786b6bd7863e86f9a8025284be87ac8 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Fri, 17 May 2019 09:31:43 -0500 Subject: [PATCH] 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 Signed-off-by: Trigger Huang Signed-off-by: Yintian Tao Signed-off-by: Alex Deucher --- 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 4e6fcaeb1303..3b7370d914a5 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c @@ -813,8 +813,16 @@ 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) -- 2.30.2