| Message ID | 20200115205649.12971-1-brian@brkho.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | drm/msm: Add the MSM_WAIT_IOVA ioctl | expand |
On Wed, Jan 15, 2020 at 12:57 PM Brian Ho <brian@brkho.com> wrote: > > This patch set implements the MSM_WAIT_IOVA ioctl which lets > userspace sleep until the value at a given iova reaches a certain > condition. This is needed in turnip to implement the > VK_QUERY_RESULT_WAIT_BIT flag for vkGetQueryPoolResults. > > First, we add a GPU-wide wait queue that is signaled on all IRQs. > We can then wait on this wait queue inside MSM_WAIT_IOVA until the > condition is met. > > The corresponding merge request in mesa can be found at: > https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3279 > > Changes in v2: > * Updated cleanup logic on error > * Added a mask > * 32 bit values by default For the series: Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com> > Brian Ho (2): > drm/msm: Add a GPU-wide wait queue > drm/msm: Add MSM_WAIT_IOVA ioctl > > drivers/gpu/drm/msm/msm_drv.c | 61 +++++++++++++++++++++++++++++++++-- > drivers/gpu/drm/msm/msm_gpu.c | 4 +++ > drivers/gpu/drm/msm/msm_gpu.h | 3 ++ > include/uapi/drm/msm_drm.h | 14 ++++++++ > 4 files changed, 80 insertions(+), 2 deletions(-) > > -- > 2.25.0.rc1.283.g88dfdc4193-goog >
This patch set implements the MSM_WAIT_IOVA ioctl which lets userspace sleep until the value at a given iova reaches a certain condition. This is needed in turnip to implement the VK_QUERY_RESULT_WAIT_BIT flag for vkGetQueryPoolResults. First, we add a GPU-wide wait queue that is signaled on all IRQs. We can then wait on this wait queue inside MSM_WAIT_IOVA until the condition is met. The corresponding merge request in mesa can be found at: https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3279 Changes in v2: * Updated cleanup logic on error * Added a mask * 32 bit values by default Brian Ho (2): drm/msm: Add a GPU-wide wait queue drm/msm: Add MSM_WAIT_IOVA ioctl drivers/gpu/drm/msm/msm_drv.c | 61 +++++++++++++++++++++++++++++++++-- drivers/gpu/drm/msm/msm_gpu.c | 4 +++ drivers/gpu/drm/msm/msm_gpu.h | 3 ++ include/uapi/drm/msm_drm.h | 14 ++++++++ 4 files changed, 80 insertions(+), 2 deletions(-)