diff options
| author |   Felix Kuehling <Felix.Kuehling@amd.com> | 2018-03-15 17:27:47 -0400 |
|---|---|---|
| committer |   Oded Gabbay <oded.gabbay@gmail.com> | 2018-03-15 17:27:47 -0400 |
| commit | d01994c24cb28b6f200138d98cbfc17b6bd967c5 (patch) | |
| tree | 6bacdad358066399fc98d53670467c3a413b1ba2 /drivers/gpu/drm/amd/amdkfd/kfd_priv.h | |
| parent | drm/amdkfd: Remove limit on number of GPUs (diff) | |
| download | linux-dev-d01994c24cb28b6f200138d98cbfc17b6bd967c5.tar.xz linux-dev-d01994c24cb28b6f200138d98cbfc17b6bd967c5.zip | |
drm/amdkfd: Aperture setup for dGPUs
Set up the GPUVM aperture for SVM (shared virtual memory) that allows
sharing a part of virtual address space between GPUs and CPUs.
Report the size of the GPUVM aperture that is supported by KGD accurately.
The low part of the GPUVM aperture is reserved for kernel use. This is
for kernel-allocated buffers that are only accessed on the GPU:
- CWSR trap handler
- IB for submitting commands in user-mode context from kernel mode
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd/kfd_priv.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_priv.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h index 014d608226d5..0d5d924b31ef 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h +++ b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h @@ -488,8 +488,12 @@ struct qcm_process_device { /* CWSR memory */ void *cwsr_kaddr; + uint64_t cwsr_base; uint64_t tba_addr; uint64_t tma_addr; + + /* IB memory */ + uint64_t ib_base; }; /* KFD Memory Eviction */ |