drm/tegra: Delete host1x_bo_ops->k(un)map

It doesn't have any callers anymore.

Aside: The ->mmap/munmap hooks have a bit a confusing name, they don't
do userspace mmaps, but a kernel vmap. I think most places use vmap
for this, except ttm, which uses kmap for vmap for added confusion.
mmap seems entirely for userspace mappings set up through mmap(2)
syscall.

Reviewed-by: Thierry Reding <treding@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Acked-by: Sumit Semwal <sumit.semwal@linaro.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Jonathan Hunter <jonathanh@nvidia.com>
Cc: linux-tegra@vger.kernel.org
Link: https://patchwork.freedesktop.org/patch/msgid/20191118103536.17675-3-daniel.vetter@ffwll.ch

diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c
index fb7667c..0c55df2 100644 (file)
--- a/drivers/gpu/drm/tegra/gem.c
+++ b/drivers/gpu/drm/tegra/gem.c
@@ -65,32 +65,6 @@ static void tegra_bo_munmap(struct host1x_bo *bo, void *addr)
                vunmap(addr);
 }
 
-static void *tegra_bo_kmap(struct host1x_bo *bo, unsigned int page)
-{
-       struct tegra_bo *obj = host1x_to_tegra_bo(bo);
-
-       if (obj->vaddr)
-               return obj->vaddr + page * PAGE_SIZE;
-       else if (obj->gem.import_attach)
-               return dma_buf_kmap(obj->gem.import_attach->dmabuf, page);
-       else
-               return vmap(obj->pages + page, 1, VM_MAP,
-                           pgprot_writecombine(PAGE_KERNEL));
-}
-
-static void tegra_bo_kunmap(struct host1x_bo *bo, unsigned int page,
-                           void *addr)
-{
-       struct tegra_bo *obj = host1x_to_tegra_bo(bo);
-
-       if (obj->vaddr)
-               return;
-       else if (obj->gem.import_attach)
-               dma_buf_kunmap(obj->gem.import_attach->dmabuf, page, addr);
-       else
-               vunmap(addr);
-}
-
 static struct host1x_bo *tegra_bo_get(struct host1x_bo *bo)
 {
        struct tegra_bo *obj = host1x_to_tegra_bo(bo);
@@ -107,8 +81,6 @@ static const struct host1x_bo_ops tegra_bo_ops = {
        .unpin = tegra_bo_unpin,
        .mmap = tegra_bo_mmap,
        .munmap = tegra_bo_munmap,
-       .kmap = tegra_bo_kmap,
-       .kunmap = tegra_bo_kunmap,
 };
 
 static int tegra_bo_iommu_map(struct tegra_drm *tegra, struct tegra_bo *bo)

diff --git a/include/linux/host1x.h b/include/linux/host1x.h
index e6eea45..d11e89d 100644 (file)
--- a/include/linux/host1x.h
+++ b/include/linux/host1x.h
@@ -68,8 +68,6 @@ struct host1x_bo_ops {
        void (*unpin)(struct host1x_bo *bo, struct sg_table *sgt);
        void *(*mmap)(struct host1x_bo *bo);
        void (*munmap)(struct host1x_bo *bo, void *addr);
-       void *(*kmap)(struct host1x_bo *bo, unsigned int pagenum);
-       void (*kunmap)(struct host1x_bo *bo, unsigned int pagenum, void *addr);
 };
 
 struct host1x_bo {
@@ -113,17 +111,6 @@ static inline void host1x_bo_munmap(struct host1x_bo *bo, void *addr)
        bo->ops->munmap(bo, addr);
 }
 
-static inline void *host1x_bo_kmap(struct host1x_bo *bo, unsigned int pagenum)
-{
-       return bo->ops->kmap(bo, pagenum);
-}
-
-static inline void host1x_bo_kunmap(struct host1x_bo *bo,
-                                   unsigned int pagenum, void *addr)
-{
-       bo->ops->kunmap(bo, pagenum, addr);
-}
-
 /*
  * host1x syncpoints
  */