drm/msm: Remove vma use tracking

This was not strictly necessary, as page unpinning (ie. shrinker) only
cares about the resv.  It did give us some extra sanity checking for
userspace controlled iova, and was useful to catch issues on kernel and
userspace side when enabling userspace iova.  But if userspace screws
this up, it just corrupts it's own gpu buffers and/or gets iova faults.
So we can just let userspace shoot it's own foot and drop the extra per-
buffer SUBMIT overhead.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Patchwork: https://patchwork.freedesktop.org/patch/551023/

1 files changed, 1 insertions, 11 deletions

diff --git a/drivers/gpu/drm/msm/msm_gem.h b/drivers/gpu/drm/msm/msm_gem.h
index 2ddd896aac68..8ddef5443140 100644
--- a/drivers/gpu/drm/msm/msm_gem.h
+++ b/drivers/gpu/drm/msm/msm_gem.h
@@ -59,24 +59,16 @@ struct msm_fence_context;
 
 struct msm_gem_vma {
 	struct drm_mm_node node;
-	spinlock_t lock;
 	uint64_t iova;
 	struct msm_gem_address_space *aspace;
 	struct list_head list;    /* node in msm_gem_object::vmas */
 	bool mapped;
-	int inuse;
-	uint32_t fence_mask;
-	uint32_t fence[MSM_GPU_MAX_RINGS];
-	struct msm_fence_context *fctx[MSM_GPU_MAX_RINGS];
 };
 
 struct msm_gem_vma *msm_gem_vma_new(struct msm_gem_address_space *aspace);
 int msm_gem_vma_init(struct msm_gem_vma *vma, int size,
 		u64 range_start, u64 range_end);
-bool msm_gem_vma_inuse(struct msm_gem_vma *vma);
 void msm_gem_vma_purge(struct msm_gem_vma *vma);
-void msm_gem_vma_unpin(struct msm_gem_vma *vma);
-void msm_gem_vma_unpin_fenced(struct msm_gem_vma *vma, struct msm_fence_context *fctx);
 int msm_gem_vma_map(struct msm_gem_vma *vma, int prot, struct sg_table *sgt, int size);
 void msm_gem_vma_close(struct msm_gem_vma *vma);
 
@@ -298,15 +290,13 @@ struct msm_gem_submit {
 /* make sure these don't conflict w/ MSM_SUBMIT_BO_x */
 #define BO_VALID	0x8000	/* is current addr in cmdstream correct/valid? */
 #define BO_LOCKED	0x4000	/* obj lock is held */
-#define BO_OBJ_PINNED	0x2000	/* obj (pages) is pinned and on active list */
-#define BO_VMA_PINNED	0x1000	/* vma (virtual address) is pinned */
+#define BO_PINNED	0x2000	/* obj (pages) is pinned and on active list */
 		uint32_t flags;
 		union {
 			struct drm_gem_object *obj;
 			uint32_t handle;
 		};
 		uint64_t iova;
-		struct msm_gem_vma *vma;
 	} bos[];
 };