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-rw-r--r--drivers/dma-buf/dma-buf.c8
-rw-r--r--drivers/dma-buf/heaps/heap-helpers.c2
-rw-r--r--drivers/gpu/drm/drm_gem_cma_helper.c9
-rw-r--r--drivers/gpu/drm/drm_gem_shmem_helper.c3
-rw-r--r--drivers/gpu/drm/drm_prime.c6
-rw-r--r--drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c5
-rw-r--r--drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c2
-rw-r--r--drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c6
-rw-r--r--drivers/gpu/drm/i915/gem/selftests/mock_dmabuf.c4
-rw-r--r--drivers/gpu/drm/tegra/gem.c5
-rw-r--r--drivers/media/common/videobuf2/videobuf2-dma-contig.c3
-rw-r--r--drivers/media/common/videobuf2/videobuf2-dma-sg.c3
-rw-r--r--drivers/media/common/videobuf2/videobuf2-vmalloc.c6
-rw-r--r--include/drm/drm_prime.h2
-rw-r--r--include/linux/dma-buf-map.h32
-rw-r--r--include/linux/dma-buf.h4
16 files changed, 66 insertions, 34 deletions
diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
index 61bd24d21b38..a6ba4d598f0e 100644
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -1236,21 +1236,21 @@ EXPORT_SYMBOL_GPL(dma_buf_vmap);
/**
* dma_buf_vunmap - Unmap a vmap obtained by dma_buf_vmap.
* @dmabuf: [in] buffer to vunmap
- * @vaddr: [in] vmap to vunmap
+ * @map: [in] vmap pointer to vunmap
*/
-void dma_buf_vunmap(struct dma_buf *dmabuf, void *vaddr)
+void dma_buf_vunmap(struct dma_buf *dmabuf, struct dma_buf_map *map)
{
if (WARN_ON(!dmabuf))
return;
BUG_ON(dma_buf_map_is_null(&dmabuf->vmap_ptr));
BUG_ON(dmabuf->vmapping_counter == 0);
- BUG_ON(!dma_buf_map_is_vaddr(&dmabuf->vmap_ptr, vaddr));
+ BUG_ON(!dma_buf_map_is_equal(&dmabuf->vmap_ptr, map));
mutex_lock(&dmabuf->lock);
if (--dmabuf->vmapping_counter == 0) {
if (dmabuf->ops->vunmap)
- dmabuf->ops->vunmap(dmabuf, vaddr);
+ dmabuf->ops->vunmap(dmabuf, map);
dma_buf_map_clear(&dmabuf->vmap_ptr);
}
mutex_unlock(&dmabuf->lock);
diff --git a/drivers/dma-buf/heaps/heap-helpers.c b/drivers/dma-buf/heaps/heap-helpers.c
index 27e54d9c120c..e9fb2818f2d4 100644
--- a/drivers/dma-buf/heaps/heap-helpers.c
+++ b/drivers/dma-buf/heaps/heap-helpers.c
@@ -252,7 +252,7 @@ static int dma_heap_dma_buf_vmap(struct dma_buf *dmabuf, struct dma_buf_map *map
return 0;
}
-static void dma_heap_dma_buf_vunmap(struct dma_buf *dmabuf, void *vaddr)
+static void dma_heap_dma_buf_vunmap(struct dma_buf *dmabuf, struct dma_buf_map *map)
{
struct heap_helper_buffer *buffer = dmabuf->priv;
diff --git a/drivers/gpu/drm/drm_gem_cma_helper.c b/drivers/gpu/drm/drm_gem_cma_helper.c
index eb412e45f896..5e9d29961307 100644
--- a/drivers/gpu/drm/drm_gem_cma_helper.c
+++ b/drivers/gpu/drm/drm_gem_cma_helper.c
@@ -175,13 +175,12 @@ drm_gem_cma_create_with_handle(struct drm_file *file_priv,
*/
void drm_gem_cma_free_object(struct drm_gem_object *gem_obj)
{
- struct drm_gem_cma_object *cma_obj;
-
- cma_obj = to_drm_gem_cma_obj(gem_obj);
+ struct drm_gem_cma_object *cma_obj = to_drm_gem_cma_obj(gem_obj);
+ struct dma_buf_map map = DMA_BUF_MAP_INIT_VADDR(cma_obj->vaddr);
if (gem_obj->import_attach) {
if (cma_obj->vaddr)
- dma_buf_vunmap(gem_obj->import_attach->dmabuf, cma_obj->vaddr);
+ dma_buf_vunmap(gem_obj->import_attach->dmabuf, &map);
drm_prime_gem_destroy(gem_obj, cma_obj->sgt);
} else if (cma_obj->vaddr) {
dma_free_wc(gem_obj->dev->dev, cma_obj->base.size,
@@ -645,7 +644,7 @@ drm_gem_cma_prime_import_sg_table_vmap(struct drm_device *dev,
obj = drm_gem_cma_prime_import_sg_table(dev, attach, sgt);
if (IS_ERR(obj)) {
- dma_buf_vunmap(attach->dmabuf, map.vaddr);
+ dma_buf_vunmap(attach->dmabuf, &map);
return obj;
}
diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c
index ad10a57cfece..3c2e8cde69a8 100644
--- a/drivers/gpu/drm/drm_gem_shmem_helper.c
+++ b/drivers/gpu/drm/drm_gem_shmem_helper.c
@@ -337,6 +337,7 @@ EXPORT_SYMBOL(drm_gem_shmem_vmap);
static void drm_gem_shmem_vunmap_locked(struct drm_gem_shmem_object *shmem)
{
struct drm_gem_object *obj = &shmem->base;
+ struct dma_buf_map map = DMA_BUF_MAP_INIT_VADDR(shmem->vaddr);
if (WARN_ON_ONCE(!shmem->vmap_use_count))
return;
@@ -345,7 +346,7 @@ static void drm_gem_shmem_vunmap_locked(struct drm_gem_shmem_object *shmem)
return;
if (obj->import_attach)
- dma_buf_vunmap(obj->import_attach->dmabuf, shmem->vaddr);
+ dma_buf_vunmap(obj->import_attach->dmabuf, &map);
else
vunmap(shmem->vaddr);
diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c
index 2d75e58d21fe..4910c446db83 100644
--- a/drivers/gpu/drm/drm_prime.c
+++ b/drivers/gpu/drm/drm_prime.c
@@ -687,16 +687,16 @@ EXPORT_SYMBOL(drm_gem_dmabuf_vmap);
/**
* drm_gem_dmabuf_vunmap - dma_buf vunmap implementation for GEM
* @dma_buf: buffer to be unmapped
- * @vaddr: the virtual address of the buffer
+ * @map: the virtual address of the buffer
*
* Releases a kernel virtual mapping. This can be used as the
* &dma_buf_ops.vunmap callback. Calls into &drm_gem_object_funcs.vunmap for device specific handling.
*/
-void drm_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr)
+void drm_gem_dmabuf_vunmap(struct dma_buf *dma_buf, struct dma_buf_map *map)
{
struct drm_gem_object *obj = dma_buf->priv;
- drm_gem_vunmap(obj, vaddr);
+ drm_gem_vunmap(obj, map->vaddr);
}
EXPORT_SYMBOL(drm_gem_dmabuf_vunmap);
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
index 80a9fc143bbb..135fbff6fecf 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
@@ -70,9 +70,10 @@ void etnaviv_gem_prime_unpin(struct drm_gem_object *obj)
static void etnaviv_gem_prime_release(struct etnaviv_gem_object *etnaviv_obj)
{
+ struct dma_buf_map map = DMA_BUF_MAP_INIT_VADDR(etnaviv_obj->vaddr);
+
if (etnaviv_obj->vaddr)
- dma_buf_vunmap(etnaviv_obj->base.import_attach->dmabuf,
- etnaviv_obj->vaddr);
+ dma_buf_vunmap(etnaviv_obj->base.import_attach->dmabuf, &map);
/* Don't drop the pages for imported dmabuf, as they are not
* ours, just free the array we allocated:
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
index 77b363d3000b..fec0e1e3dc3e 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
@@ -96,7 +96,7 @@ static int i915_gem_dmabuf_vmap(struct dma_buf *dma_buf, struct dma_buf_map *map
return 0;
}
-static void i915_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr)
+static void i915_gem_dmabuf_vunmap(struct dma_buf *dma_buf, struct dma_buf_map *map)
{
struct drm_i915_gem_object *obj = dma_buf_to_obj(dma_buf);
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c
index 3aad7643b0b7..b6d43880b0c1 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c
@@ -152,7 +152,7 @@ static int igt_dmabuf_import(void *arg)
err = 0;
out_dma_map:
- dma_buf_vunmap(dmabuf, dma_map);
+ dma_buf_vunmap(dmabuf, &map);
out_obj:
i915_gem_object_put(obj);
out_dmabuf:
@@ -182,7 +182,7 @@ static int igt_dmabuf_import_ownership(void *arg)
}
memset(ptr, 0xc5, PAGE_SIZE);
- dma_buf_vunmap(dmabuf, ptr);
+ dma_buf_vunmap(dmabuf, &map);
obj = to_intel_bo(i915_gem_prime_import(&i915->drm, dmabuf));
if (IS_ERR(obj)) {
@@ -250,7 +250,7 @@ static int igt_dmabuf_export_vmap(void *arg)
memset(ptr, 0xc5, dmabuf->size);
err = 0;
- dma_buf_vunmap(dmabuf, ptr);
+ dma_buf_vunmap(dmabuf, &map);
out:
dma_buf_put(dmabuf);
return err;
diff --git a/drivers/gpu/drm/i915/gem/selftests/mock_dmabuf.c b/drivers/gpu/drm/i915/gem/selftests/mock_dmabuf.c
index dcae46441f7d..7dfef531f6d4 100644
--- a/drivers/gpu/drm/i915/gem/selftests/mock_dmabuf.c
+++ b/drivers/gpu/drm/i915/gem/selftests/mock_dmabuf.c
@@ -75,11 +75,11 @@ static int mock_dmabuf_vmap(struct dma_buf *dma_buf, struct dma_buf_map *map)
return 0;
}
-static void mock_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr)
+static void mock_dmabuf_vunmap(struct dma_buf *dma_buf, struct dma_buf_map *map)
{
struct mock_dmabuf *mock = to_mock(dma_buf);
- vm_unmap_ram(vaddr, mock->npages);
+ vm_unmap_ram(map->vaddr, mock->npages);
}
static int mock_dmabuf_mmap(struct dma_buf *dma_buf, struct vm_area_struct *vma)
diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c
index 2b6e06c7a2c5..5df577682878 100644
--- a/drivers/gpu/drm/tegra/gem.c
+++ b/drivers/gpu/drm/tegra/gem.c
@@ -149,11 +149,12 @@ static void *tegra_bo_mmap(struct host1x_bo *bo)
static void tegra_bo_munmap(struct host1x_bo *bo, void *addr)
{
struct tegra_bo *obj = host1x_to_tegra_bo(bo);
+ struct dma_buf_map map = DMA_BUF_MAP_INIT_VADDR(addr);
if (obj->vaddr)
return;
else if (obj->gem.import_attach)
- dma_buf_vunmap(obj->gem.import_attach->dmabuf, addr);
+ dma_buf_vunmap(obj->gem.import_attach->dmabuf, &map);
else
vunmap(addr);
}
@@ -663,7 +664,7 @@ static int tegra_gem_prime_vmap(struct dma_buf *buf, struct dma_buf_map *map)
return 0;
}
-static void tegra_gem_prime_vunmap(struct dma_buf *buf, void *vaddr)
+static void tegra_gem_prime_vunmap(struct dma_buf *buf, struct dma_buf_map *map)
{
}
diff --git a/drivers/media/common/videobuf2/videobuf2-dma-contig.c b/drivers/media/common/videobuf2/videobuf2-dma-contig.c
index 11428287bdf3..a1eb8279b113 100644
--- a/drivers/media/common/videobuf2/videobuf2-dma-contig.c
+++ b/drivers/media/common/videobuf2/videobuf2-dma-contig.c
@@ -648,6 +648,7 @@ static void vb2_dc_unmap_dmabuf(void *mem_priv)
{
struct vb2_dc_buf *buf = mem_priv;
struct sg_table *sgt = buf->dma_sgt;
+ struct dma_buf_map map = DMA_BUF_MAP_INIT_VADDR(buf->vaddr);
if (WARN_ON(!buf->db_attach)) {
pr_err("trying to unpin a not attached buffer\n");
@@ -660,7 +661,7 @@ static void vb2_dc_unmap_dmabuf(void *mem_priv)
}
if (buf->vaddr) {
- dma_buf_vunmap(buf->db_attach->dmabuf, buf->vaddr);
+ dma_buf_vunmap(buf->db_attach->dmabuf, &map);
buf->vaddr = NULL;
}
dma_buf_unmap_attachment(buf->db_attach, sgt, buf->dma_dir);
diff --git a/drivers/media/common/videobuf2/videobuf2-dma-sg.c b/drivers/media/common/videobuf2/videobuf2-dma-sg.c
index c51170e9c1b9..d5157e903e27 100644
--- a/drivers/media/common/videobuf2/videobuf2-dma-sg.c
+++ b/drivers/media/common/videobuf2/videobuf2-dma-sg.c
@@ -580,6 +580,7 @@ static void vb2_dma_sg_unmap_dmabuf(void *mem_priv)
{
struct vb2_dma_sg_buf *buf = mem_priv;
struct sg_table *sgt = buf->dma_sgt;
+ struct dma_buf_map map = DMA_BUF_MAP_INIT_VADDR(buf->vaddr);
if (WARN_ON(!buf->db_attach)) {
pr_err("trying to unpin a not attached buffer\n");
@@ -592,7 +593,7 @@ static void vb2_dma_sg_unmap_dmabuf(void *mem_priv)
}
if (buf->vaddr) {
- dma_buf_vunmap(buf->db_attach->dmabuf, buf->vaddr);
+ dma_buf_vunmap(buf->db_attach->dmabuf, &map);
buf->vaddr = NULL;
}
dma_buf_unmap_attachment(buf->db_attach, sgt, buf->dma_dir);
diff --git a/drivers/media/common/videobuf2/videobuf2-vmalloc.c b/drivers/media/common/videobuf2/videobuf2-vmalloc.c
index 7b68e2379c65..11ba0eb1315b 100644
--- a/drivers/media/common/videobuf2/videobuf2-vmalloc.c
+++ b/drivers/media/common/videobuf2/videobuf2-vmalloc.c
@@ -390,17 +390,19 @@ static int vb2_vmalloc_map_dmabuf(void *mem_priv)
static void vb2_vmalloc_unmap_dmabuf(void *mem_priv)
{
struct vb2_vmalloc_buf *buf = mem_priv;
+ struct dma_buf_map map = DMA_BUF_MAP_INIT_VADDR(buf->vaddr);
- dma_buf_vunmap(buf->dbuf, buf->vaddr);
+ dma_buf_vunmap(buf->dbuf, &map);
buf->vaddr = NULL;
}
static void vb2_vmalloc_detach_dmabuf(void *mem_priv)
{
struct vb2_vmalloc_buf *buf = mem_priv;
+ struct dma_buf_map map = DMA_BUF_MAP_INIT_VADDR(buf->vaddr);
if (buf->vaddr)
- dma_buf_vunmap(buf->dbuf, buf->vaddr);
+ dma_buf_vunmap(buf->dbuf, &map);
kfree(buf);
}
diff --git a/include/drm/drm_prime.h b/include/drm/drm_prime.h
index 3ee22639ff77..093f760cc131 100644
--- a/include/drm/drm_prime.h
+++ b/include/drm/drm_prime.h
@@ -84,7 +84,7 @@ void drm_gem_unmap_dma_buf(struct dma_buf_attachment *attach,
struct sg_table *sgt,
enum dma_data_direction dir);
int drm_gem_dmabuf_vmap(struct dma_buf *dma_buf, struct dma_buf_map *map);
-void drm_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr);
+void drm_gem_dmabuf_vunmap(struct dma_buf *dma_buf, struct dma_buf_map *map);
int drm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma);
int drm_gem_dmabuf_mmap(struct dma_buf *dma_buf, struct vm_area_struct *vma);
diff --git a/include/linux/dma-buf-map.h b/include/linux/dma-buf-map.h
index 5ae732d373eb..c173a4abf4ba 100644
--- a/include/linux/dma-buf-map.h
+++ b/include/linux/dma-buf-map.h
@@ -24,6 +24,16 @@ struct dma_buf_map {
};
/**
+ * DMA_BUF_MAP_INIT_VADDR - Initializes struct dma_buf_map to an address in system memory
+ * @vaddr: A system-memory address
+ */
+#define DMA_BUF_MAP_INIT_VADDR(vaddr_) \
+ { \
+ .vaddr = (vaddr_), \
+ .is_iomem = false, \
+ }
+
+/**
* dma_buf_map_set_vaddr - Sets a dma-buf mapping structure to an address in system memory
* @map: The dma-buf mapping structure
* @vaddr: A system-memory address
@@ -36,10 +46,26 @@ static inline void dma_buf_map_set_vaddr(struct dma_buf_map *map, void *vaddr)
map->is_iomem = false;
}
-/* API transition helper */
-static inline bool dma_buf_map_is_vaddr(const struct dma_buf_map *map, const void *vaddr)
+/**
+ * dma_buf_map_is_equal - Compares two dma-buf mapping structures for equality
+ * @lhs: The dma-buf mapping structure
+ * @rhs: A dma-buf mapping structure to compare with
+ *
+ * Two dma-buf mapping structures are equal if they both refer to the same type of memory
+ * and to the same address within that memory.
+ *
+ * Returns:
+ * True is both structures are equal, or false otherwise.
+ */
+static inline bool dma_buf_map_is_equal(const struct dma_buf_map *lhs,
+ const struct dma_buf_map *rhs)
{
- return !map->is_iomem && (map->vaddr == vaddr);
+ if (lhs->is_iomem != rhs->is_iomem)
+ return false;
+ else if (lhs->is_iomem)
+ return lhs->vaddr_iomem == rhs->vaddr_iomem;
+ else
+ return lhs->vaddr == rhs->vaddr;
}
/**
diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h
index 7237997cfa38..cf77cc15f4ba 100644
--- a/include/linux/dma-buf.h
+++ b/include/linux/dma-buf.h
@@ -267,7 +267,7 @@ struct dma_buf_ops {
int (*mmap)(struct dma_buf *, struct vm_area_struct *vma);
int (*vmap)(struct dma_buf *dmabuf, struct dma_buf_map *map);
- void (*vunmap)(struct dma_buf *, void *vaddr);
+ void (*vunmap)(struct dma_buf *dmabuf, struct dma_buf_map *map);
};
/**
@@ -504,5 +504,5 @@ int dma_buf_end_cpu_access(struct dma_buf *dma_buf,
int dma_buf_mmap(struct dma_buf *, struct vm_area_struct *,
unsigned long);
int dma_buf_vmap(struct dma_buf *dmabuf, struct dma_buf_map *map);
-void dma_buf_vunmap(struct dma_buf *dmabuf, void *vaddr);
+void dma_buf_vunmap(struct dma_buf *dmabuf, struct dma_buf_map *map);
#endif /* __DMA_BUF_H__ */
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-30 10:40:59 +0000