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-rw-r--r--drivers/dma-buf/dma-buf.c28
-rw-r--r--drivers/dma-buf/heaps/heap-helpers.c8
-rw-r--r--drivers/gpu/drm/drm_gem_cma_helper.c13
-rw-r--r--drivers/gpu/drm/drm_gem_shmem_helper.c14
-rw-r--r--drivers/gpu/drm/drm_prime.c9
-rw-r--r--drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c8
-rw-r--r--drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c11
-rw-r--r--drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c12
-rw-r--r--drivers/gpu/drm/i915/gem/selftests/mock_dmabuf.c10
-rw-r--r--drivers/gpu/drm/tegra/gem.c18
-rw-r--r--drivers/media/common/videobuf2/videobuf2-dma-contig.c14
-rw-r--r--drivers/media/common/videobuf2/videobuf2-dma-sg.c16
-rw-r--r--drivers/media/common/videobuf2/videobuf2-vmalloc.c15
-rw-r--r--drivers/misc/fastrpc.c6
-rw-r--r--include/drm/drm_prime.h3
-rw-r--r--include/linux/dma-buf-map.h13
-rw-r--r--include/linux/dma-buf.h6
17 files changed, 143 insertions, 61 deletions
diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
index 5e849ca241a0..61bd24d21b38 100644
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -1186,46 +1186,50 @@ EXPORT_SYMBOL_GPL(dma_buf_mmap);
* dma_buf_vmap - Create virtual mapping for the buffer object into kernel
* address space. Same restrictions as for vmap and friends apply.
* @dmabuf: [in] buffer to vmap
+ * @map: [out] returns the vmap pointer
*
* This call may fail due to lack of virtual mapping address space.
* These calls are optional in drivers. The intended use for them
* is for mapping objects linear in kernel space for high use objects.
* Please attempt to use kmap/kunmap before thinking about these interfaces.
*
- * Returns NULL on error.
+ * Returns 0 on success, or a negative errno code otherwise.
*/
-void *dma_buf_vmap(struct dma_buf *dmabuf)
+int dma_buf_vmap(struct dma_buf *dmabuf, struct dma_buf_map *map)
{
- void *ptr;
+ struct dma_buf_map ptr;
+ int ret = 0;
+
+ dma_buf_map_clear(map);
if (WARN_ON(!dmabuf))
- return NULL;
+ return -EINVAL;
if (!dmabuf->ops->vmap)
- return NULL;
+ return -EINVAL;
mutex_lock(&dmabuf->lock);
if (dmabuf->vmapping_counter) {
dmabuf->vmapping_counter++;
BUG_ON(dma_buf_map_is_null(&dmabuf->vmap_ptr));
- ptr = dmabuf->vmap_ptr.vaddr;
+ *map = dmabuf->vmap_ptr;
goto out_unlock;
}
BUG_ON(dma_buf_map_is_set(&dmabuf->vmap_ptr));
- ptr = dmabuf->ops->vmap(dmabuf);
- if (WARN_ON_ONCE(IS_ERR(ptr)))
- ptr = NULL;
- if (!ptr)
+ ret = dmabuf->ops->vmap(dmabuf, &ptr);
+ if (WARN_ON_ONCE(ret))
goto out_unlock;
- dmabuf->vmap_ptr.vaddr = ptr;
+ dmabuf->vmap_ptr = ptr;
dmabuf->vmapping_counter = 1;
+ *map = dmabuf->vmap_ptr;
+
out_unlock:
mutex_unlock(&dmabuf->lock);
- return ptr;
+ return ret;
}
EXPORT_SYMBOL_GPL(dma_buf_vmap);
diff --git a/drivers/dma-buf/heaps/heap-helpers.c b/drivers/dma-buf/heaps/heap-helpers.c
index 9f964ca3f59c..27e54d9c120c 100644
--- a/drivers/dma-buf/heaps/heap-helpers.c
+++ b/drivers/dma-buf/heaps/heap-helpers.c
@@ -236,7 +236,7 @@ static int dma_heap_dma_buf_end_cpu_access(struct dma_buf *dmabuf,
return 0;
}
-static void *dma_heap_dma_buf_vmap(struct dma_buf *dmabuf)
+static int dma_heap_dma_buf_vmap(struct dma_buf *dmabuf, struct dma_buf_map *map)
{
struct heap_helper_buffer *buffer = dmabuf->priv;
void *vaddr;
@@ -245,7 +245,11 @@ static void *dma_heap_dma_buf_vmap(struct dma_buf *dmabuf)
vaddr = dma_heap_buffer_vmap_get(buffer);
mutex_unlock(&buffer->lock);
- return vaddr;
+ if (!vaddr)
+ return -ENOMEM;
+ dma_buf_map_set_vaddr(map, vaddr);
+
+ return 0;
}
static void dma_heap_dma_buf_vunmap(struct dma_buf *dmabuf, void *vaddr)
diff --git a/drivers/gpu/drm/drm_gem_cma_helper.c b/drivers/gpu/drm/drm_gem_cma_helper.c
index 1e5b389c435c..eb412e45f896 100644
--- a/drivers/gpu/drm/drm_gem_cma_helper.c
+++ b/drivers/gpu/drm/drm_gem_cma_helper.c
@@ -634,22 +634,23 @@ drm_gem_cma_prime_import_sg_table_vmap(struct drm_device *dev,
{
struct drm_gem_cma_object *cma_obj;
struct drm_gem_object *obj;
- void *vaddr;
+ struct dma_buf_map map;
+ int ret;
- vaddr = dma_buf_vmap(attach->dmabuf);
- if (!vaddr) {
+ ret = dma_buf_vmap(attach->dmabuf, &map);
+ if (ret) {
DRM_ERROR("Failed to vmap PRIME buffer\n");
- return ERR_PTR(-ENOMEM);
+ return ERR_PTR(ret);
}
obj = drm_gem_cma_prime_import_sg_table(dev, attach, sgt);
if (IS_ERR(obj)) {
- dma_buf_vunmap(attach->dmabuf, vaddr);
+ dma_buf_vunmap(attach->dmabuf, map.vaddr);
return obj;
}
cma_obj = to_drm_gem_cma_obj(obj);
- cma_obj->vaddr = vaddr;
+ cma_obj->vaddr = map.vaddr;
return obj;
}
diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c
index 0a952f27c184..ad10a57cfece 100644
--- a/drivers/gpu/drm/drm_gem_shmem_helper.c
+++ b/drivers/gpu/drm/drm_gem_shmem_helper.c
@@ -261,13 +261,16 @@ EXPORT_SYMBOL(drm_gem_shmem_unpin);
static void *drm_gem_shmem_vmap_locked(struct drm_gem_shmem_object *shmem)
{
struct drm_gem_object *obj = &shmem->base;
- int ret;
+ struct dma_buf_map map;
+ int ret = 0;
if (shmem->vmap_use_count++ > 0)
return shmem->vaddr;
if (obj->import_attach) {
- shmem->vaddr = dma_buf_vmap(obj->import_attach->dmabuf);
+ ret = dma_buf_vmap(obj->import_attach->dmabuf, &map);
+ if (!ret)
+ shmem->vaddr = map.vaddr;
} else {
pgprot_t prot = PAGE_KERNEL;
@@ -279,11 +282,12 @@ static void *drm_gem_shmem_vmap_locked(struct drm_gem_shmem_object *shmem)
prot = pgprot_writecombine(prot);
shmem->vaddr = vmap(shmem->pages, obj->size >> PAGE_SHIFT,
VM_MAP, prot);
+ if (!shmem->vaddr)
+ ret = -ENOMEM;
}
- if (!shmem->vaddr) {
- DRM_DEBUG_KMS("Failed to vmap pages\n");
- ret = -ENOMEM;
+ if (ret) {
+ DRM_DEBUG_KMS("Failed to vmap pages, error %d\n", ret);
goto err_put_pages;
}
diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c
index 194784a5b344..2d75e58d21fe 100644
--- a/drivers/gpu/drm/drm_prime.c
+++ b/drivers/gpu/drm/drm_prime.c
@@ -662,22 +662,25 @@ EXPORT_SYMBOL(drm_gem_unmap_dma_buf);
/**
* drm_gem_dmabuf_vmap - dma_buf vmap implementation for GEM
* @dma_buf: buffer to be mapped
+ * @map: the virtual address of the buffer
*
* Sets up a kernel virtual mapping. This can be used as the &dma_buf_ops.vmap
* callback. Calls into &drm_gem_object_funcs.vmap for device specific handling.
*
* Returns the kernel virtual address or NULL on failure.
*/
-void *drm_gem_dmabuf_vmap(struct dma_buf *dma_buf)
+int drm_gem_dmabuf_vmap(struct dma_buf *dma_buf, struct dma_buf_map *map)
{
struct drm_gem_object *obj = dma_buf->priv;
void *vaddr;
vaddr = drm_gem_vmap(obj);
if (IS_ERR(vaddr))
- vaddr = NULL;
+ return PTR_ERR(vaddr);
- return vaddr;
+ dma_buf_map_set_vaddr(map, vaddr);
+
+ return 0;
}
EXPORT_SYMBOL(drm_gem_dmabuf_vmap);
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
index 4aa3426a9ba4..80a9fc143bbb 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
@@ -85,9 +85,15 @@ static void etnaviv_gem_prime_release(struct etnaviv_gem_object *etnaviv_obj)
static void *etnaviv_gem_prime_vmap_impl(struct etnaviv_gem_object *etnaviv_obj)
{
+ struct dma_buf_map map;
+ int ret;
+
lockdep_assert_held(&etnaviv_obj->lock);
- return dma_buf_vmap(etnaviv_obj->base.import_attach->dmabuf);
+ ret = dma_buf_vmap(etnaviv_obj->base.import_attach->dmabuf, &map);
+ if (ret)
+ return NULL;
+ return map.vaddr;
}
static int etnaviv_gem_prime_mmap_obj(struct etnaviv_gem_object *etnaviv_obj,
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
index 27fddc22a7c6..77b363d3000b 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
@@ -82,11 +82,18 @@ static void i915_gem_unmap_dma_buf(struct dma_buf_attachment *attachment,
i915_gem_object_unpin_pages(obj);
}
-static void *i915_gem_dmabuf_vmap(struct dma_buf *dma_buf)
+static int i915_gem_dmabuf_vmap(struct dma_buf *dma_buf, struct dma_buf_map *map)
{
struct drm_i915_gem_object *obj = dma_buf_to_obj(dma_buf);
+ void *vaddr;
- return i915_gem_object_pin_map(obj, I915_MAP_WB);
+ vaddr = i915_gem_object_pin_map(obj, I915_MAP_WB);
+ if (IS_ERR(vaddr))
+ return PTR_ERR(vaddr);
+
+ dma_buf_map_set_vaddr(map, vaddr);
+
+ return 0;
}
static void i915_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr)
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 0845ce1ae37c..3aad7643b0b7 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c
@@ -82,6 +82,7 @@ static int igt_dmabuf_import(void *arg)
struct drm_i915_gem_object *obj;
struct dma_buf *dmabuf;
void *obj_map, *dma_map;
+ struct dma_buf_map map;
u32 pattern[] = { 0, 0xaa, 0xcc, 0x55, 0xff };
int err, i;
@@ -110,7 +111,8 @@ static int igt_dmabuf_import(void *arg)
goto out_obj;
}
- dma_map = dma_buf_vmap(dmabuf);
+ err = dma_buf_vmap(dmabuf, &map);
+ dma_map = err ? NULL : map.vaddr;
if (!dma_map) {
pr_err("dma_buf_vmap failed\n");
err = -ENOMEM;
@@ -163,6 +165,7 @@ static int igt_dmabuf_import_ownership(void *arg)
struct drm_i915_private *i915 = arg;
struct drm_i915_gem_object *obj;
struct dma_buf *dmabuf;
+ struct dma_buf_map map;
void *ptr;
int err;
@@ -170,7 +173,8 @@ static int igt_dmabuf_import_ownership(void *arg)
if (IS_ERR(dmabuf))
return PTR_ERR(dmabuf);
- ptr = dma_buf_vmap(dmabuf);
+ err = dma_buf_vmap(dmabuf, &map);
+ ptr = err ? NULL : map.vaddr;
if (!ptr) {
pr_err("dma_buf_vmap failed\n");
err = -ENOMEM;
@@ -212,6 +216,7 @@ static int igt_dmabuf_export_vmap(void *arg)
struct drm_i915_private *i915 = arg;
struct drm_i915_gem_object *obj;
struct dma_buf *dmabuf;
+ struct dma_buf_map map;
void *ptr;
int err;
@@ -228,7 +233,8 @@ static int igt_dmabuf_export_vmap(void *arg)
}
i915_gem_object_put(obj);
- ptr = dma_buf_vmap(dmabuf);
+ err = dma_buf_vmap(dmabuf, &map);
+ ptr = err ? NULL : map.vaddr;
if (!ptr) {
pr_err("dma_buf_vmap failed\n");
err = -ENOMEM;
diff --git a/drivers/gpu/drm/i915/gem/selftests/mock_dmabuf.c b/drivers/gpu/drm/i915/gem/selftests/mock_dmabuf.c
index debaf7b18ab5..dcae46441f7d 100644
--- a/drivers/gpu/drm/i915/gem/selftests/mock_dmabuf.c
+++ b/drivers/gpu/drm/i915/gem/selftests/mock_dmabuf.c
@@ -62,11 +62,17 @@ static void mock_dmabuf_release(struct dma_buf *dma_buf)
kfree(mock);
}
-static void *mock_dmabuf_vmap(struct dma_buf *dma_buf)
+static int mock_dmabuf_vmap(struct dma_buf *dma_buf, struct dma_buf_map *map)
{
struct mock_dmabuf *mock = to_mock(dma_buf);
+ void *vaddr;
- return vm_map_ram(mock->pages, mock->npages, 0);
+ vaddr = vm_map_ram(mock->pages, mock->npages, 0);
+ if (!vaddr)
+ return -ENOMEM;
+ dma_buf_map_set_vaddr(map, vaddr);
+
+ return 0;
}
static void mock_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr)
diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c
index d481dea4738d..2b6e06c7a2c5 100644
--- a/drivers/gpu/drm/tegra/gem.c
+++ b/drivers/gpu/drm/tegra/gem.c
@@ -132,14 +132,18 @@ static void tegra_bo_unpin(struct device *dev, struct sg_table *sgt)
static void *tegra_bo_mmap(struct host1x_bo *bo)
{
struct tegra_bo *obj = host1x_to_tegra_bo(bo);
+ struct dma_buf_map map;
+ int ret;
- if (obj->vaddr)
+ if (obj->vaddr) {
return obj->vaddr;
- else if (obj->gem.import_attach)
- return dma_buf_vmap(obj->gem.import_attach->dmabuf);
- else
+ } else if (obj->gem.import_attach) {
+ ret = dma_buf_vmap(obj->gem.import_attach->dmabuf, &map);
+ return ret ? NULL : map.vaddr;
+ } else {
return vmap(obj->pages, obj->num_pages, VM_MAP,
pgprot_writecombine(PAGE_KERNEL));
+ }
}
static void tegra_bo_munmap(struct host1x_bo *bo, void *addr)
@@ -649,12 +653,14 @@ static int tegra_gem_prime_mmap(struct dma_buf *buf, struct vm_area_struct *vma)
return __tegra_gem_mmap(gem, vma);
}
-static void *tegra_gem_prime_vmap(struct dma_buf *buf)
+static int tegra_gem_prime_vmap(struct dma_buf *buf, struct dma_buf_map *map)
{
struct drm_gem_object *gem = buf->priv;
struct tegra_bo *bo = to_tegra_bo(gem);
- return bo->vaddr;
+ dma_buf_map_set_vaddr(map, bo->vaddr);
+
+ return 0;
}
static void tegra_gem_prime_vunmap(struct dma_buf *buf, void *vaddr)
diff --git a/drivers/media/common/videobuf2/videobuf2-dma-contig.c b/drivers/media/common/videobuf2/videobuf2-dma-contig.c
index ec3446cc45b8..11428287bdf3 100644
--- a/drivers/media/common/videobuf2/videobuf2-dma-contig.c
+++ b/drivers/media/common/videobuf2/videobuf2-dma-contig.c
@@ -81,9 +81,13 @@ static void *vb2_dc_cookie(void *buf_priv)
static void *vb2_dc_vaddr(void *buf_priv)
{
struct vb2_dc_buf *buf = buf_priv;
+ struct dma_buf_map map;
+ int ret;
- if (!buf->vaddr && buf->db_attach)
- buf->vaddr = dma_buf_vmap(buf->db_attach->dmabuf);
+ if (!buf->vaddr && buf->db_attach) {
+ ret = dma_buf_vmap(buf->db_attach->dmabuf, &map);
+ buf->vaddr = ret ? NULL : map.vaddr;
+ }
return buf->vaddr;
}
@@ -365,11 +369,13 @@ vb2_dc_dmabuf_ops_end_cpu_access(struct dma_buf *dbuf,
return 0;
}
-static void *vb2_dc_dmabuf_ops_vmap(struct dma_buf *dbuf)
+static int vb2_dc_dmabuf_ops_vmap(struct dma_buf *dbuf, struct dma_buf_map *map)
{
struct vb2_dc_buf *buf = dbuf->priv;
- return buf->vaddr;
+ dma_buf_map_set_vaddr(map, buf->vaddr);
+
+ return 0;
}
static int vb2_dc_dmabuf_ops_mmap(struct dma_buf *dbuf,
diff --git a/drivers/media/common/videobuf2/videobuf2-dma-sg.c b/drivers/media/common/videobuf2/videobuf2-dma-sg.c
index 0a40e00f0d7e..c51170e9c1b9 100644
--- a/drivers/media/common/videobuf2/videobuf2-dma-sg.c
+++ b/drivers/media/common/videobuf2/videobuf2-dma-sg.c
@@ -300,14 +300,18 @@ static void vb2_dma_sg_put_userptr(void *buf_priv)
static void *vb2_dma_sg_vaddr(void *buf_priv)
{
struct vb2_dma_sg_buf *buf = buf_priv;
+ struct dma_buf_map map;
+ int ret;
BUG_ON(!buf);
if (!buf->vaddr) {
- if (buf->db_attach)
- buf->vaddr = dma_buf_vmap(buf->db_attach->dmabuf);
- else
+ if (buf->db_attach) {
+ ret = dma_buf_vmap(buf->db_attach->dmabuf, &map);
+ buf->vaddr = ret ? NULL : map.vaddr;
+ } else {
buf->vaddr = vm_map_ram(buf->pages, buf->num_pages, -1);
+ }
}
/* add offset in case userptr is not page-aligned */
@@ -489,11 +493,13 @@ vb2_dma_sg_dmabuf_ops_end_cpu_access(struct dma_buf *dbuf,
return 0;
}
-static void *vb2_dma_sg_dmabuf_ops_vmap(struct dma_buf *dbuf)
+static int vb2_dma_sg_dmabuf_ops_vmap(struct dma_buf *dbuf, struct dma_buf_map *map)
{
struct vb2_dma_sg_buf *buf = dbuf->priv;
- return vb2_dma_sg_vaddr(buf);
+ dma_buf_map_set_vaddr(map, buf->vaddr);
+
+ return 0;
}
static int vb2_dma_sg_dmabuf_ops_mmap(struct dma_buf *dbuf,
diff --git a/drivers/media/common/videobuf2/videobuf2-vmalloc.c b/drivers/media/common/videobuf2/videobuf2-vmalloc.c
index c66fda4a65e4..7b68e2379c65 100644
--- a/drivers/media/common/videobuf2/videobuf2-vmalloc.c
+++ b/drivers/media/common/videobuf2/videobuf2-vmalloc.c
@@ -318,11 +318,13 @@ static void vb2_vmalloc_dmabuf_ops_release(struct dma_buf *dbuf)
vb2_vmalloc_put(dbuf->priv);
}
-static void *vb2_vmalloc_dmabuf_ops_vmap(struct dma_buf *dbuf)
+static int vb2_vmalloc_dmabuf_ops_vmap(struct dma_buf *dbuf, struct dma_buf_map *map)
{
struct vb2_vmalloc_buf *buf = dbuf->priv;
- return buf->vaddr;
+ dma_buf_map_set_vaddr(map, buf->vaddr);
+
+ return 0;
}
static int vb2_vmalloc_dmabuf_ops_mmap(struct dma_buf *dbuf,
@@ -374,10 +376,15 @@ static struct dma_buf *vb2_vmalloc_get_dmabuf(void *buf_priv, unsigned long flag
static int vb2_vmalloc_map_dmabuf(void *mem_priv)
{
struct vb2_vmalloc_buf *buf = mem_priv;
+ struct dma_buf_map map;
+ int ret;
- buf->vaddr = dma_buf_vmap(buf->dbuf);
+ ret = dma_buf_vmap(buf->dbuf, &map);
+ if (ret)
+ return -EFAULT;
+ buf->vaddr = map.vaddr;
- return buf->vaddr ? 0 : -EFAULT;
+ return 0;
}
static void vb2_vmalloc_unmap_dmabuf(void *mem_priv)
diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index 7939c55daceb..b39e198533f0 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -581,11 +581,13 @@ static void fastrpc_dma_buf_detatch(struct dma_buf *dmabuf,
kfree(a);
}
-static void *fastrpc_vmap(struct dma_buf *dmabuf)
+static int fastrpc_vmap(struct dma_buf *dmabuf, struct dma_buf_map *map)
{
struct fastrpc_buf *buf = dmabuf->priv;
- return buf->virt;
+ dma_buf_map_set_vaddr(map, buf->virt);
+
+ return 0;
}
static int fastrpc_mmap(struct dma_buf *dmabuf,
diff --git a/include/drm/drm_prime.h b/include/drm/drm_prime.h
index bf141e74a1c2..3ee22639ff77 100644
--- a/include/drm/drm_prime.h
+++ b/include/drm/drm_prime.h
@@ -54,6 +54,7 @@ struct device;
struct dma_buf_export_info;
struct dma_buf;
struct dma_buf_attachment;
+struct dma_buf_map;
enum dma_data_direction;
@@ -82,7 +83,7 @@ struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment *attach,
void drm_gem_unmap_dma_buf(struct dma_buf_attachment *attach,
struct sg_table *sgt,
enum dma_data_direction dir);
-void *drm_gem_dmabuf_vmap(struct dma_buf *dma_buf);
+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);
int drm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma);
diff --git a/include/linux/dma-buf-map.h b/include/linux/dma-buf-map.h
index 00143c88feb6..5ae732d373eb 100644
--- a/include/linux/dma-buf-map.h
+++ b/include/linux/dma-buf-map.h
@@ -23,6 +23,19 @@ struct dma_buf_map {
bool is_iomem;
};
+/**
+ * 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
+ *
+ * Sets the address and clears the I/O-memory flag.
+ */
+static inline void dma_buf_map_set_vaddr(struct dma_buf_map *map, void *vaddr)
+{
+ map->vaddr = 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)
{
diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h
index fcc2ddfb6d18..7237997cfa38 100644
--- a/include/linux/dma-buf.h
+++ b/include/linux/dma-buf.h
@@ -266,7 +266,7 @@ struct dma_buf_ops {
*/
int (*mmap)(struct dma_buf *, struct vm_area_struct *vma);
- void *(*vmap)(struct dma_buf *);
+ int (*vmap)(struct dma_buf *dmabuf, struct dma_buf_map *map);
void (*vunmap)(struct dma_buf *, void *vaddr);
};
@@ -503,6 +503,6 @@ int dma_buf_end_cpu_access(struct dma_buf *dma_buf,
int dma_buf_mmap(struct dma_buf *, struct vm_area_struct *,
unsigned long);
-void *dma_buf_vmap(struct dma_buf *);
-void dma_buf_vunmap(struct dma_buf *, void *vaddr);
+int dma_buf_vmap(struct dma_buf *dmabuf, struct dma_buf_map *map);
+void dma_buf_vunmap(struct dma_buf *dmabuf, void *vaddr);
#endif /* __DMA_BUF_H__ */
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