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| author |   Huang Rui <ray.huang@amd.com> | 2020-08-18 14:54:23 +0800 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2020-08-26 16:40:17 -0400 |
| commit | 6127896f4a272578a62d1b439e86e64721296d65 (patch) | |
| tree | 784476ea5dfda74a5d9772c0ccb9c6861b10ec6d /drivers/gpu/drm/amd/amdkfd/kfd_device.c | |
| parent | drm/amd/pm: correct Vega20 swctf limit setting (diff) | |
| download | linux-dev-6127896f4a272578a62d1b439e86e64721296d65.tar.xz linux-dev-6127896f4a272578a62d1b439e86e64721296d65.zip | |
drm/amdkfd: implement the dGPU fallback path for apu (v6)
We still have a few iommu issues which need to address, so force raven
as "dgpu" path for the moment.
This is to add the fallback path to bypass IOMMU if IOMMU v2 is disabled
or ACPI CRAT table not correct.
v2: Use ignore_crat parameter to decide whether it will go with IOMMUv2.
v3: Align with existed thunk, don't change the way of raven, only renoir
will use "dgpu" path by default.
v4: don't update global ignore_crat in the driver, and revise fallback
function if CRAT is broken.
v5: refine acpi crat good but no iommu support case, and rename the
title.
v6: fix the issue of dGPU initialized firstly, just modify the report
value in the node_show().
Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd/kfd_device.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_device.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device.c b/drivers/gpu/drm/amd/amdkfd/kfd_device.c index d5e790f046b4..b15b620e731b 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_device.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device.c @@ -116,6 +116,7 @@ static const struct kfd_device_info carrizo_device_info = { .num_xgmi_sdma_engines = 0, .num_sdma_queues_per_engine = 2, }; +#endif static const struct kfd_device_info raven_device_info = { .asic_family = CHIP_RAVEN, @@ -134,7 +135,6 @@ static const struct kfd_device_info raven_device_info = { .num_xgmi_sdma_engines = 0, .num_sdma_queues_per_engine = 2, }; -#endif static const struct kfd_device_info hawaii_device_info = { .asic_family = CHIP_HAWAII, @@ -738,6 +738,9 @@ bool kgd2kfd_device_init(struct kfd_dev *kfd, goto gws_error; } + /* If CRAT is broken, won't set iommu enabled */ + kfd_double_confirm_iommu_support(kfd); + if (kfd_iommu_device_init(kfd)) { dev_err(kfd_device, "Error initializing iommuv2\n"); goto device_iommu_error; |