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-----Original Message----- From: Sasha Levin sashal@kernel.org Sent: Tuesday, August 22, 2023 7:36 AM To: linux-kernel@vger.kernel.org; stable@vger.kernel.org Cc: Deucher, Alexander Alexander.Deucher@amd.com; Kuehling, Felix Felix.Kuehling@amd.com; Koenig, Christian Christian.Koenig@amd.com; Mike Lothian mike@fireburn.co.uk; Sasha Levin sashal@kernel.org; Pan, Xinhui Xinhui.Pan@amd.com; airlied@gmail.com; daniel@ffwll.ch; amd- gfx@lists.freedesktop.org; dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 6.4 11/11] drm/amdkfd: disable IOMMUv2 support for Raven
From: Alex Deucher alexander.deucher@amd.com
[ Upstream commit 091ae5473f96ced844af6ba39b94757359b12348 ]
Use the dGPU path instead. There were a lot of platform issues with IOMMU in general on these chips due to windows not enabling IOMMU at the time. The dGPU path has been used for a long time with newer APUs and works fine. This also paves the way to simplify the driver significantly.
This is not needed for stable.
Alex
Reviewed-by: Felix Kuehling Felix.Kuehling@amd.com Acked-by: Christian König christian.koenig@amd.com Tested-by: Mike Lothian mike@fireburn.co.uk Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org
drivers/gpu/drm/amd/amdkfd/kfd_device.c | 7 ------- 1 file changed, 7 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device.c b/drivers/gpu/drm/amd/amdkfd/kfd_device.c index 9c8197573dee7..224e057d2dbbf 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_device.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device.c @@ -185,11 +185,6 @@ static void kfd_device_info_init(struct kfd_dev *kfd,
kfd_device_info_set_event_interrupt_class(kfd);
/* Raven */if (gc_version == IP_VERSION(9, 1, 0) ||gc_version == IP_VERSION(9, 2, 2))kfd->device_info.needs_iommu_device = true;if (gc_version < IP_VERSION(11, 0, 0)) { /* Navi2x+, Navi1x+ */ if (gc_version == IP_VERSION(10, 3, 6)) @@ -283,7+278,6 @@ struct kfd_dev *kgd2kfd_probe(struct amdgpu_device *adev, bool vf) gfx_target_version = 90000; f2g = &gfx_v9_kfd2kgd; break; -#ifdef KFD_SUPPORT_IOMMU_V2 /* Raven */ case IP_VERSION(9, 1, 0): case IP_VERSION(9, 2, 2): @@ -291,7 +285,6 @@ struct kfd_dev *kgd2kfd_probe(struct amdgpu_device *adev, bool vf) if (!vf) f2g = &gfx_v9_kfd2kgd; break; -#endif /* Vega12 */ case IP_VERSION(9, 2, 1): gfx_target_version = 90004; -- 2.40.1