diff options
| author | Pranjal Ramajor Asha Kanojiya <quic_pkanojiy@quicinc.com> | 2023-09-01 11:22:47 -0600 |
|---|---|---|
| committer | Jeffrey Hugo <quic_jhugo@quicinc.com> | 2023-09-22 09:58:49 -0600 |
| commit | 217b812364d360e1933d8485f063400e5dda7d66 (patch) | |
| tree | d02c292f695af31e07c2f3306bf675eb220e6188 /Documentation/accel | |
| parent | b2576f6cf6da6adde5c698aa281c883f2376b876 (diff) | |
| download | linux-217b812364d360e1933d8485f063400e5dda7d66.tar.gz linux-217b812364d360e1933d8485f063400e5dda7d66.tar.bz2 linux-217b812364d360e1933d8485f063400e5dda7d66.zip | |
accel/qaic: Add QAIC_DETACH_SLICE_BO IOCTL
Once a BO is attached with slicing configuration that BO can only be used
for that particular setting. With this new feature user can detach slicing
configuration off an already sliced BO and attach new slicing configuration
using QAIC_ATTACH_SLICE_BO.
This will support BO recycling.
detach_slice_bo() detaches slicing configuration from a BO. This new
helper function can also be used in release_dbc() as we are doing the
exact same thing.
Signed-off-by: Pranjal Ramajor Asha Kanojiya <quic_pkanojiy@quicinc.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
[jhugo: add documentation for new ioctl]
Signed-off-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230901172247.11410-8-quic_jhugo@quicinc.com
Diffstat (limited to 'Documentation/accel')
| -rw-r--r-- | Documentation/accel/qaic/qaic.rst | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/accel/qaic/qaic.rst b/Documentation/accel/qaic/qaic.rst index 72a70ab6e3a8..c88502383136 100644 --- a/Documentation/accel/qaic/qaic.rst +++ b/Documentation/accel/qaic/qaic.rst @@ -123,6 +123,16 @@ DRM_IOCTL_QAIC_PART_DEV AIC100 device and can be used for limiting a process to some subset of resources. +DRM_IOCTL_QAIC_DETACH_SLICE_BO + This IOCTL allows userspace to remove the slicing information from a BO that + was originally provided by a call to DRM_IOCTL_QAIC_ATTACH_SLICE_BO. This + is the inverse of DRM_IOCTL_QAIC_ATTACH_SLICE_BO. The BO must be idle for + DRM_IOCTL_QAIC_DETACH_SLICE_BO to be called. After a successful detach slice + operation the BO may have new slicing information attached with a new call + to DRM_IOCTL_QAIC_ATTACH_SLICE_BO. After detach slice, the BO cannot be + executed until after a new attach slice operation. Combining attach slice + and detach slice calls allows userspace to use a BO with multiple workloads. + Userspace Client Isolation ========================== |