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drm: msm: Switch to use drm_gem_object reservation_object

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Now that the base struct drm_gem_object has a reservation_object, use it
and remove the private BO one.

We can't use the drm_gem_reservation_object_wait() helper for MSM
because (in theory) msm_gem_cpu_prep() will also do some cache
maintenance on the GEM object.

Cc: David Airlie <airlied@linux.ie>
Cc: linux-arm-msm@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Cc: freedreno@lists.freedesktop.org
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Rob Clark <robdclark@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190202154158.10443-4-robh@kernel.org
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
This commit is contained in:
Rob Herring 2019-02-02 09:41:56 -06:00 committed by Maxime Ripard
parent fa238ea166
commit dd55cf6929
No known key found for this signature in database
GPG key ID: E3EF0D6F671851C5
5 changed files with 13 additions and 31 deletions
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1
drivers/gpu/drm/msm/msm_drv.c
View file

@ -1085,7 +1085,6 @@ static struct drm_driver msm_driver = {
.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
.gem_prime_export = drm_gem_prime_export,
.gem_prime_import = drm_gem_prime_import,
.gem_prime_res_obj = msm_gem_prime_res_obj,
.gem_prime_pin = msm_gem_prime_pin,
.gem_prime_unpin = msm_gem_prime_unpin,
.gem_prime_get_sg_table = msm_gem_prime_get_sg_table,

1
drivers/gpu/drm/msm/msm_drv.h
View file

@ -299,7 +299,6 @@ struct sg_table *msm_gem_prime_get_sg_table(struct drm_gem_object *obj);
void *msm_gem_prime_vmap(struct drm_gem_object *obj);
void msm_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
int msm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma);
struct reservation_object *msm_gem_prime_res_obj(struct drm_gem_object *obj);
struct drm_gem_object *msm_gem_prime_import_sg_table(struct drm_device *dev,
struct dma_buf_attachment *attach, struct sg_table *sg);
int msm_gem_prime_pin(struct drm_gem_object *obj);

27
drivers/gpu/drm/msm/msm_gem.c
View file

@ -668,14 +668,13 @@ void msm_gem_vunmap(struct drm_gem_object *obj, enum msm_gem_lock subclass)
int msm_gem_sync_object(struct drm_gem_object *obj,
struct msm_fence_context *fctx, bool exclusive)
{
struct msm_gem_object *msm_obj = to_msm_bo(obj);
struct reservation_object_list *fobj;
struct dma_fence *fence;
int i, ret;
fobj = reservation_object_get_list(msm_obj->resv);
fobj = reservation_object_get_list(obj->resv);
if (!fobj || (fobj->shared_count == 0)) {
fence = reservation_object_get_excl(msm_obj->resv);
fence = reservation_object_get_excl(obj->resv);
/* don't need to wait on our own fences, since ring is fifo */
if (fence && (fence->context != fctx->context)) {
ret = dma_fence_wait(fence, true);
@ -689,7 +688,7 @@ int msm_gem_sync_object(struct drm_gem_object *obj,
for (i = 0; i < fobj->shared_count; i++) {
fence = rcu_dereference_protected(fobj->shared[i],
reservation_object_held(msm_obj->resv));
reservation_object_held(obj->resv));
if (fence->context != fctx->context) {
ret = dma_fence_wait(fence, true);
if (ret)
@ -707,9 +706,9 @@ void msm_gem_move_to_active(struct drm_gem_object *obj,
WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED);
msm_obj->gpu = gpu;
if (exclusive)
reservation_object_add_excl_fence(msm_obj->resv, fence);
reservation_object_add_excl_fence(obj->resv, fence);
else
reservation_object_add_shared_fence(msm_obj->resv, fence);
reservation_object_add_shared_fence(obj->resv, fence);
list_del_init(&msm_obj->mm_list);
list_add_tail(&msm_obj->mm_list, &gpu->active_list);
}
@ -729,13 +728,12 @@ void msm_gem_move_to_inactive(struct drm_gem_object *obj)
int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout)
{
struct msm_gem_object *msm_obj = to_msm_bo(obj);
bool write = !!(op & MSM_PREP_WRITE);
unsigned long remain =
op & MSM_PREP_NOSYNC ? 0 : timeout_to_jiffies(timeout);
long ret;
ret = reservation_object_wait_timeout_rcu(msm_obj->resv, write,
ret = reservation_object_wait_timeout_rcu(obj->resv, write,
true, remain);
if (ret == 0)
return remain == 0 ? -EBUSY : -ETIMEDOUT;
@ -767,7 +765,7 @@ static void describe_fence(struct dma_fence *fence, const char *type,
void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m)
{
struct msm_gem_object *msm_obj = to_msm_bo(obj);
struct reservation_object *robj = msm_obj->resv;
struct reservation_object *robj = obj->resv;
struct reservation_object_list *fobj;
struct dma_fence *fence;
struct msm_gem_vma *vma;
@ -879,9 +877,6 @@ void msm_gem_free_object(struct drm_gem_object *obj)
put_pages(obj);
}
if (msm_obj->resv == &msm_obj->_resv)
reservation_object_fini(msm_obj->resv);
drm_gem_object_release(obj);
mutex_unlock(&msm_obj->lock);
@ -941,12 +936,8 @@ static int msm_gem_new_impl(struct drm_device *dev,
msm_obj->flags = flags;
msm_obj->madv = MSM_MADV_WILLNEED;
if (resv) {
msm_obj->resv = resv;
} else {
msm_obj->resv = &msm_obj->_resv;
reservation_object_init(msm_obj->resv);
}
if (resv)
msm_obj->base.resv = resv;
INIT_LIST_HEAD(&msm_obj->submit_entry);
INIT_LIST_HEAD(&msm_obj->vmas);

7
drivers/gpu/drm/msm/msm_gem_prime.c
View file

@ -70,10 +70,3 @@ void msm_gem_prime_unpin(struct drm_gem_object *obj)
if (!obj->import_attach)
msm_gem_put_pages(obj);
}
struct reservation_object *msm_gem_prime_res_obj(struct drm_gem_object *obj)
{
struct msm_gem_object *msm_obj = to_msm_bo(obj);
return msm_obj->resv;
}

8
drivers/gpu/drm/msm/msm_gem_submit.c
View file

@ -173,7 +173,7 @@ static void submit_unlock_unpin_bo(struct msm_gem_submit *submit,
msm_gem_unpin_iova(&msm_obj->base, submit->gpu->aspace);
if (submit->bos[i].flags & BO_LOCKED)
ww_mutex_unlock(&msm_obj->resv->lock);
ww_mutex_unlock(&msm_obj->base.resv->lock);
if (backoff && !(submit->bos[i].flags & BO_VALID))
submit->bos[i].iova = 0;
@ -196,7 +196,7 @@ static int submit_lock_objects(struct msm_gem_submit *submit)
contended = i;
if (!(submit->bos[i].flags & BO_LOCKED)) {
ret = ww_mutex_lock_interruptible(&msm_obj->resv->lock,
ret = ww_mutex_lock_interruptible(&msm_obj->base.resv->lock,
&submit->ticket);
if (ret)
goto fail;
@ -218,7 +218,7 @@ static int submit_lock_objects(struct msm_gem_submit *submit)
if (ret == -EDEADLK) {
struct msm_gem_object *msm_obj = submit->bos[contended].obj;
/* we lost out in a seqno race, lock and retry.. */
ret = ww_mutex_lock_slow_interruptible(&msm_obj->resv->lock,
ret = ww_mutex_lock_slow_interruptible(&msm_obj->base.resv->lock,
&submit->ticket);
if (!ret) {
submit->bos[contended].flags |= BO_LOCKED;
@ -244,7 +244,7 @@ static int submit_fence_sync(struct msm_gem_submit *submit, bool no_implicit)
* strange place to call it. OTOH this is a
* convenient can-fail point to hook it in.
*/
ret = reservation_object_reserve_shared(msm_obj->resv,
ret = reservation_object_reserve_shared(msm_obj->base.resv,
1);
if (ret)
return ret;