diff options
| author | Felix Kuehling <Felix.Kuehling@amd.com> | 2018-04-11 00:33:05 +0300 |
|---|---|---|
| committer | Oded Gabbay <oded.gabbay@gmail.com> | 2018-04-11 00:33:05 +0300 |
| commit | ef568db792e66216b48fd1567ff4a9d3bf9af866 (patch) | |
| tree | d760838f9ee71765d151a5e3132cbc9d1c3d1139 /drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | |
| parent | df03ef9342ce09985210679a734f88a269c19ff5 (diff) | |
| download | linux-ef568db792e66216b48fd1567ff4a9d3bf9af866.tar.xz | |
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_chardev.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c index 519c7b1854b2..5694fbead9a5 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c @@ -295,6 +295,13 @@ static int kfd_ioctl_create_queue(struct file *filep, struct kfd_process *p, args->doorbell_offset = KFD_MMAP_TYPE_DOORBELL; args->doorbell_offset |= KFD_MMAP_GPU_ID(args->gpu_id); args->doorbell_offset <<= PAGE_SHIFT; + if (KFD_IS_SOC15(dev->device_info->asic_family)) + /* On SOC15 ASICs, doorbell allocation must be + * per-device, and independent from the per-process + * queue_id. Return the doorbell offset within the + * doorbell aperture to user mode. + */ + args->doorbell_offset |= q_properties.doorbell_off; mutex_unlock(&p->mutex); |