diff options
| author |   Felix Kuehling <Felix.Kuehling@amd.com> | 2018-04-10 17:33:05 -0400 |
|---|---|---|
| committer |   Oded Gabbay <oded.gabbay@gmail.com> | 2018-04-10 17:33:05 -0400 |
| commit | ef568db792e66216b48fd1567ff4a9d3bf9af866 (patch) | |
| tree | d760838f9ee71765d151a5e3132cbc9d1c3d1139 /drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c | |
| parent | drm/amdkfd: Clean up KFD_MMAP_ offset handling (diff) | |
| download | linux-dev-ef568db792e66216b48fd1567ff4a9d3bf9af866.tar.xz linux-dev-ef568db792e66216b48fd1567ff4a9d3bf9af866.zip | |
drm/amdkfd: Implement doorbell allocation for SOC15
Allocate doorbells according to the doorbell routing information on
SOC15 ASICs (Vega10 and later). On older ASICs we continue to use the
queue_id as the doorbell ID to maintain compatibility with the Thunk.
Signed-off-by: Shaoyun Liu <Shaoyun.Liu@amd.com>
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/amdkfd/kfd_doorbell.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c b/drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c index efc59dea563f..36c9269ea7c0 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c @@ -49,7 +49,7 @@ static unsigned int max_doorbell_slices; */ /* # of doorbell bytes allocated for each process. */ -static size_t kfd_doorbell_process_slice(struct kfd_dev *kfd) +size_t kfd_doorbell_process_slice(struct kfd_dev *kfd) { return roundup(kfd->device_info->doorbell_size * KFD_MAX_NUM_OF_QUEUES_PER_PROCESS, @@ -214,13 +214,9 @@ void write_kernel_doorbell(void __iomem *db, u32 value) } } -/* - * queue_ids are in the range [0,MAX_PROCESS_QUEUES) and are mapped 1:1 - * to doorbells with the process's doorbell page - */ -unsigned int kfd_queue_id_to_doorbell(struct kfd_dev *kfd, +unsigned int kfd_doorbell_id_to_offset(struct kfd_dev *kfd, struct kfd_process *process, - unsigned int queue_id) + unsigned int doorbell_id) { /* * doorbell_id_offset accounts for doorbells taken by KGD. @@ -231,7 +227,7 @@ unsigned int kfd_queue_id_to_doorbell(struct kfd_dev *kfd, return kfd->doorbell_id_offset + process->doorbell_index * kfd_doorbell_process_slice(kfd) / sizeof(u32) + - queue_id * kfd->device_info->doorbell_size / sizeof(u32); + doorbell_id * kfd->device_info->doorbell_size / sizeof(u32); } uint64_t kfd_get_number_elems(struct kfd_dev *kfd) |