From: Rob Clark robdclark@chromium.org
There was only a single user, which could just as easily stash the iova when pinning.
v2: fix prepare->prepare->cleanup->cleanup sequences
Signed-off-by: Rob Clark robdclark@chromium.org Reviewed-by: Dmitry Baryshkov dmitry.baryshkov@linaro.org --- drivers/gpu/drm/msm/msm_fb.c | 20 ++++++++++++++------ drivers/gpu/drm/msm/msm_gem.c | 16 ---------------- drivers/gpu/drm/msm/msm_gem.h | 2 -- 3 files changed, 14 insertions(+), 24 deletions(-)
diff --git a/drivers/gpu/drm/msm/msm_fb.c b/drivers/gpu/drm/msm/msm_fb.c index 7137492fe78e..362775ae50af 100644 --- a/drivers/gpu/drm/msm/msm_fb.c +++ b/drivers/gpu/drm/msm/msm_fb.c @@ -21,6 +21,10 @@ struct msm_framebuffer {
/* Count of # of attached planes which need dirtyfb: */ refcount_t dirtyfb; + + /* Framebuffer per-plane address, if pinned, else zero: */ + uint64_t iova[DRM_FORMAT_MAX_PLANES]; + atomic_t prepare_count; }; #define to_msm_framebuffer(x) container_of(x, struct msm_framebuffer, base)
@@ -76,14 +80,16 @@ int msm_framebuffer_prepare(struct drm_framebuffer *fb, { struct msm_framebuffer *msm_fb = to_msm_framebuffer(fb); int ret, i, n = fb->format->num_planes; - uint64_t iova;
if (needs_dirtyfb) refcount_inc(&msm_fb->dirtyfb);
+ atomic_inc(&msm_fb->prepare_count); + for (i = 0; i < n; i++) { - ret = msm_gem_get_and_pin_iova(fb->obj[i], aspace, &iova); - drm_dbg_state(fb->dev, "FB[%u]: iova[%d]: %08llx (%d)", fb->base.id, i, iova, ret); + ret = msm_gem_get_and_pin_iova(fb->obj[i], aspace, &msm_fb->iova[i]); + drm_dbg_state(fb->dev, "FB[%u]: iova[%d]: %08llx (%d)", + fb->base.id, i, msm_fb->iova[i], ret); if (ret) return ret; } @@ -103,14 +109,16 @@ void msm_framebuffer_cleanup(struct drm_framebuffer *fb,
for (i = 0; i < n; i++) msm_gem_unpin_iova(fb->obj[i], aspace); + + if (!atomic_dec_return(&msm_fb->prepare_count)) + memset(msm_fb->iova, 0, sizeof(msm_fb->iova)); }
uint32_t msm_framebuffer_iova(struct drm_framebuffer *fb, struct msm_gem_address_space *aspace, int plane) { - if (!fb->obj[plane]) - return 0; - return msm_gem_iova(fb->obj[plane], aspace) + fb->offsets[plane]; + struct msm_framebuffer *msm_fb = to_msm_framebuffer(fb); + return msm_fb->iova[plane]; }
struct drm_gem_object *msm_framebuffer_bo(struct drm_framebuffer *fb, int plane) diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c index f4b68bb28a4d..deafae6feaa8 100644 --- a/drivers/gpu/drm/msm/msm_gem.c +++ b/drivers/gpu/drm/msm/msm_gem.c @@ -509,22 +509,6 @@ int msm_gem_get_iova(struct drm_gem_object *obj, return ret; }
-/* get iova without taking a reference, used in places where you have - * already done a 'msm_gem_get_and_pin_iova' or 'msm_gem_get_iova' - */ -uint64_t msm_gem_iova(struct drm_gem_object *obj, - struct msm_gem_address_space *aspace) -{ - struct msm_gem_vma *vma; - - msm_gem_lock(obj); - vma = lookup_vma(obj, aspace); - msm_gem_unlock(obj); - GEM_WARN_ON(!vma); - - return vma ? vma->iova : 0; -} - /* * Locked variant of msm_gem_unpin_iova() */ diff --git a/drivers/gpu/drm/msm/msm_gem.h b/drivers/gpu/drm/msm/msm_gem.h index 090c3b1a6d9a..772de010a669 100644 --- a/drivers/gpu/drm/msm/msm_gem.h +++ b/drivers/gpu/drm/msm/msm_gem.h @@ -142,8 +142,6 @@ int msm_gem_get_and_pin_iova_locked(struct drm_gem_object *obj, struct msm_gem_address_space *aspace, uint64_t *iova); int msm_gem_get_and_pin_iova(struct drm_gem_object *obj, struct msm_gem_address_space *aspace, uint64_t *iova); -uint64_t msm_gem_iova(struct drm_gem_object *obj, - struct msm_gem_address_space *aspace); void msm_gem_unpin_iova_locked(struct drm_gem_object *obj, struct msm_gem_address_space *aspace); void msm_gem_unpin_iova(struct drm_gem_object *obj,