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drm/amdkfd: disable IOMMUv2 support for Raven

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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.

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>
This commit is contained in:
Alex Deucher
2023-07-28 11:38:02 -04:00
parent 99c1501996
commit 2b4adeb34f
1 changed files with 0 additions and 7 deletions
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7
drivers/gpu/drm/amd/amdkfd/kfd_device.c
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@@ -194,11 +194,6 @@ 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))
@@ -292,7 +287,6 @@ 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):
@@ -300,7 +294,6 @@ 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;