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| author | Jay Cornwall <jay.cornwall@amd.com> | 2015-01-19 11:47:34 -0600 |
|---|---|---|
| committer | Oded Gabbay <oded.gabbay@amd.com> | 2015-01-19 11:47:34 -0600 |
| commit | d752f95e55ed36648fc2bcbca348f5113920c357 (patch) | |
| tree | 15b70eedfca815c542742354c5099e9c760984d7 /drivers/gpu/drm/imx/imx-tve.c | |
| parent | b6819cec29cc0088e7398db9ed8377ab8328e012 (diff) | |
| download | linux-d752f95e55ed36648fc2bcbca348f5113920c357.tar.gz linux-d752f95e55ed36648fc2bcbca348f5113920c357.tar.bz2 linux-d752f95e55ed36648fc2bcbca348f5113920c357.zip | |
drm/amdkfd: Preserve CP_MQD_IQ_RPTR internal state
CP microcode uses undocumented bits in this register to record queue
state information. The KFD zeroes these bits in update_mqd, when invoked
through the UPDATE_QUEUE ioctl, causing incoherent state when the ioctl
is used to successively unmap and map a queue.
Since the queue type cannot be changed in this path, move the MQD write
to init_mqd.
Signed-off-by: Jay Cornwall <jay.cornwall@amd.com>
Reviewed-by: Ben Goz <ben.goz@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
Diffstat (limited to 'drivers/gpu/drm/imx/imx-tve.c')
0 files changed, 0 insertions, 0 deletions