| Message ID | 20230901172247.11410-7-quic_jhugo@quicinc.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | accel/qaic: Extend uAPI to support undoing ATTACH_SLICE_BO | expand |
On Fri, Sep 01, 2023 at 11:22:46AM -0600, Jeffrey Hugo wrote: > From: Pranjal Ramajor Asha Kanojiya <quic_pkanojiy@quicinc.com> > > This makes sure that we have a single place to initialize and > re-initialize BO. > > Use this new API to cleanup release_dbc() > > We will need this for next patch to detach slicing to a BO. > > Signed-off-by: Pranjal Ramajor Asha Kanojiya <quic_pkanojiy@quicinc.com> > Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com> > Signed-off-by: Jeffrey Hugo <quic_jhugo@quicinc.com> > --- > drivers/accel/qaic/qaic_data.c | 20 ++++++++++++++------ > 1 file changed, 14 insertions(+), 6 deletions(-) > > diff --git a/drivers/accel/qaic/qaic_data.c b/drivers/accel/qaic/qaic_data.c > index 6e44e00937af..2acb9dbac88b 100644 > --- a/drivers/accel/qaic/qaic_data.c > +++ b/drivers/accel/qaic/qaic_data.c > @@ -635,6 +635,18 @@ static const struct drm_gem_object_funcs qaic_gem_funcs = { > .vm_ops = &drm_vm_ops, > }; > > +static void qaic_init_bo(struct qaic_bo *bo, bool reinit) > +{ > + if (reinit) { > + bo->sliced = false; > + reinit_completion(&bo->xfer_done); > + } else { > + init_completion(&bo->xfer_done); > + } > + complete_all(&bo->xfer_done); Why do you need complete_all() here ? Regards Stanislaw
On 9/17/2023 2:48 AM, Stanislaw Gruszka wrote: > On Fri, Sep 01, 2023 at 11:22:46AM -0600, Jeffrey Hugo wrote: >> From: Pranjal Ramajor Asha Kanojiya <quic_pkanojiy@quicinc.com> >> >> This makes sure that we have a single place to initialize and >> re-initialize BO. >> >> Use this new API to cleanup release_dbc() >> >> We will need this for next patch to detach slicing to a BO. >> >> Signed-off-by: Pranjal Ramajor Asha Kanojiya <quic_pkanojiy@quicinc.com> >> Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com> >> Signed-off-by: Jeffrey Hugo <quic_jhugo@quicinc.com> >> --- >> drivers/accel/qaic/qaic_data.c | 20 ++++++++++++++------ >> 1 file changed, 14 insertions(+), 6 deletions(-) >> >> diff --git a/drivers/accel/qaic/qaic_data.c b/drivers/accel/qaic/qaic_data.c >> index 6e44e00937af..2acb9dbac88b 100644 >> --- a/drivers/accel/qaic/qaic_data.c >> +++ b/drivers/accel/qaic/qaic_data.c >> @@ -635,6 +635,18 @@ static const struct drm_gem_object_funcs qaic_gem_funcs = { >> .vm_ops = &drm_vm_ops, >> }; >> >> +static void qaic_init_bo(struct qaic_bo *bo, bool reinit) >> +{ >> + if (reinit) { >> + bo->sliced = false; >> + reinit_completion(&bo->xfer_done); >> + } else { >> + init_completion(&bo->xfer_done); >> + } >> + complete_all(&bo->xfer_done); > Why do you need complete_all() here ? This is moved from qaic_alloc_init_bo(). This puts the BO in a state where the wait_exec ioctl will fall through and return if userspace immediately calls it after allocating the BO, prior to submitting the BO to hardware. Otherwise we need a special, one off check to see that the BO was never submitted to the hardware and handle that edge case. -Jeff
diff --git a/drivers/accel/qaic/qaic_data.c b/drivers/accel/qaic/qaic_data.c index 6e44e00937af..2acb9dbac88b 100644 --- a/drivers/accel/qaic/qaic_data.c +++ b/drivers/accel/qaic/qaic_data.c @@ -635,6 +635,18 @@ static const struct drm_gem_object_funcs qaic_gem_funcs = { .vm_ops = &drm_vm_ops, }; +static void qaic_init_bo(struct qaic_bo *bo, bool reinit) +{ + if (reinit) { + bo->sliced = false; + reinit_completion(&bo->xfer_done); + } else { + init_completion(&bo->xfer_done); + } + complete_all(&bo->xfer_done); + INIT_LIST_HEAD(&bo->slices); +} + static struct qaic_bo *qaic_alloc_init_bo(void) { struct qaic_bo *bo; @@ -643,9 +655,7 @@ static struct qaic_bo *qaic_alloc_init_bo(void) if (!bo) return ERR_PTR(-ENOMEM); - INIT_LIST_HEAD(&bo->slices); - init_completion(&bo->xfer_done); - complete_all(&bo->xfer_done); + qaic_init_bo(bo, false); return bo; } @@ -1880,9 +1890,7 @@ void release_dbc(struct qaic_device *qdev, u32 dbc_id) list_for_each_entry_safe(bo, bo_temp, &dbc->bo_lists, bo_list) { qaic_free_slices_bo(bo); qaic_unprepare_bo(qdev, bo); - bo->sliced = false; - INIT_LIST_HEAD(&bo->slices); - init_completion(&bo->xfer_done); + qaic_init_bo(bo, true); list_del(&bo->bo_list); }