diff options
| author | Felix Kuehling | 2018-03-15 22:27:52 +0100 |
|---|---|---|
| committer | Oded Gabbay | 2018-03-15 22:27:52 +0100 |
| commit | 0fc8011f89feb8b2c3008583b777d097e1974660 (patch) | |
| tree | 77c0a44e6e9cefad545fc45141680b3b3b1dc7e1 /drivers/gpu/drm/amd/amdkfd/kfd_priv.h | |
| parent | drm/amdkfd: Add ioctls for GPUVM memory management (diff) | |
| download | kernel-qcow2-linux-0fc8011f89feb8b2c3008583b777d097e1974660.tar.gz kernel-qcow2-linux-0fc8011f89feb8b2c3008583b777d097e1974660.tar.xz kernel-qcow2-linux-0fc8011f89feb8b2c3008583b777d097e1974660.zip | |
drm/amdkfd: Kmap event page for dGPUs
The events page must be accessible in user mode by the GPU and CPU
as well as in kernel mode by the CPU. On dGPUs user mode virtual
addresses are managed by the Thunk's GPU memory allocation code.
Therefore we can't allocate the memory in kernel mode like we do
on APUs. But KFD still needs to map the memory for kernel access.
To facilitate this, the Thunk provides the buffer handle of the
events page to KFD when creating the first event.
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 | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h index 1542807373d7..aa9386356587 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h +++ b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h @@ -866,6 +866,8 @@ void kfd_signal_iommu_event(struct kfd_dev *dev, void kfd_signal_hw_exception_event(unsigned int pasid); int kfd_set_event(struct kfd_process *p, uint32_t event_id); int kfd_reset_event(struct kfd_process *p, uint32_t event_id); +int kfd_event_page_set(struct kfd_process *p, void *kernel_address, + uint64_t size); int kfd_event_create(struct file *devkfd, struct kfd_process *p, uint32_t event_type, bool auto_reset, uint32_t node_id, uint32_t *event_id, uint32_t *event_trigger_data, |