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drm/amdgpu: Add doorbell routing info to kgd2kfd_shared_resources

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This is needed for Vega10 and later ASICs to let KFD know which
doorbells can be used for SDMA and CP queues respectively.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This commit is contained in:
Felix Kuehling
2018-04-10 17:33:02 -04:00
committed by Oded Gabbay
parent d5a114a6c5
commit 642a0e8026
2 changed files with 37 additions and 0 deletions
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22
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
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@@ -179,6 +179,28 @@ void amdgpu_amdkfd_device_init(struct amdgpu_device *adev)
&gpu_resources.doorbell_physical_address,
&gpu_resources.doorbell_aperture_size,
&gpu_resources.doorbell_start_offset);
if (adev->asic_type >= CHIP_VEGA10) {
/* On SOC15 the BIF is involved in routing
* doorbells using the low 12 bits of the
* address. Communicate the assignments to
* KFD. KFD uses two doorbell pages per
* process in case of 64-bit doorbells so we
* can use each doorbell assignment twice.
*/
gpu_resources.sdma_doorbell[0][0] =
AMDGPU_DOORBELL64_sDMA_ENGINE0;
gpu_resources.sdma_doorbell[0][1] =
AMDGPU_DOORBELL64_sDMA_ENGINE0 + 0x200;
gpu_resources.sdma_doorbell[1][0] =
AMDGPU_DOORBELL64_sDMA_ENGINE1;
gpu_resources.sdma_doorbell[1][1] =
AMDGPU_DOORBELL64_sDMA_ENGINE1 + 0x200;
/* Doorbells 0x0f0-0ff and 0x2f0-2ff are reserved for
* SDMA, IH and VCN. So don't use them for the CP.
*/
gpu_resources.reserved_doorbell_mask = 0x1f0;
gpu_resources.reserved_doorbell_val = 0x0f0;
}
kgd2kfd->device_init(adev->kfd, &gpu_resources);
}