diff options
| author | Felix Kuehling <Felix.Kuehling@amd.com> | 2018-04-10 17:33:02 -0400 |
|---|---|---|
| committer | Oded Gabbay <oded.gabbay@gmail.com> | 2018-04-10 17:33:02 -0400 |
| commit | 642a0e80262af8e9d5b8129e2149c670ab3bb4b8 (patch) | |
| tree | a8ce3602019068857bdda90b7c251f9c5fbd7b70 /drivers/gpu/drm/amd/include/kgd_kfd_interface.h | |
| parent | d5a114a6c5f7fa41da338e0134fccf3f25723fbd (diff) | |
drm/amdgpu: Add doorbell routing info to kgd2kfd_shared_resources
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>
Diffstat (limited to 'drivers/gpu/drm/amd/include/kgd_kfd_interface.h')
| -rw-r--r-- | drivers/gpu/drm/amd/include/kgd_kfd_interface.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/include/kgd_kfd_interface.h b/drivers/gpu/drm/amd/include/kgd_kfd_interface.h index 7cf35068866f..5733fbee07f7 100644 --- a/drivers/gpu/drm/amd/include/kgd_kfd_interface.h +++ b/drivers/gpu/drm/amd/include/kgd_kfd_interface.h @@ -100,6 +100,21 @@ struct kgd2kfd_shared_resources { /* Bit n == 1 means Queue n is available for KFD */ DECLARE_BITMAP(queue_bitmap, KGD_MAX_QUEUES); + /* Doorbell assignments (SOC15 and later chips only). Only + * specific doorbells are routed to each SDMA engine. Others + * are routed to IH and VCN. They are not usable by the CP. + * + * Any doorbell number D that satisfies the following condition + * is reserved: (D & reserved_doorbell_mask) == reserved_doorbell_val + * + * KFD currently uses 1024 (= 0x3ff) doorbells per process. If + * doorbells 0x0f0-0x0f7 and 0x2f-0x2f7 are reserved, that means + * mask would be set to 0x1f8 and val set to 0x0f0. + */ + unsigned int sdma_doorbell[2][2]; + unsigned int reserved_doorbell_mask; + unsigned int reserved_doorbell_val; + /* Base address of doorbell aperture. */ phys_addr_t doorbell_physical_address; |