--- /dev/null
+/**************************************************************************
+ *
+ * Based on drivers/gpu/drm/vmwgfx/vmwgfx_prime.c
+ *
+ * Copyright © 2013 VMware, Inc., Palo Alto, CA., USA
+ * Copyright © 2014 Samsung Electronics Co., Ltd.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+#include "vigs_gem.h"
+#include <linux/dma-buf.h>
+
+static int vigs_dmabuf_attach(struct dma_buf *dma_buf,
+ struct device *target_dev,
+ struct dma_buf_attachment *attach)
+{
+ DRM_DEBUG_PRIME("enter");
+
+ return -ENOSYS;
+}
+
+static void vigs_dmabuf_detach(struct dma_buf *dma_buf,
+ struct dma_buf_attachment *attach)
+{
+ DRM_DEBUG_PRIME("enter");
+}
+
+static struct sg_table *vigs_dmabuf_map(struct dma_buf_attachment *attach,
+ enum dma_data_direction dir)
+{
+ DRM_DEBUG_PRIME("enter");
+
+ return ERR_PTR(-ENOSYS);
+}
+
+static void vigs_dmabuf_unmap(struct dma_buf_attachment *attach,
+ struct sg_table *sgb,
+ enum dma_data_direction dir)
+{
+ DRM_DEBUG_PRIME("enter");
+}
+
+static void *vigs_dmabuf_kmap(struct dma_buf *dma_buf,
+ unsigned long page_num)
+{
+ DRM_DEBUG_PRIME("enter");
+
+ return NULL;
+}
+
+static void *vigs_dmabuf_kmap_atomic(struct dma_buf *dma_buf,
+ unsigned long page_num)
+{
+ DRM_DEBUG_PRIME("enter");
+
+ return NULL;
+}
+
+static void vigs_dmabuf_kunmap(struct dma_buf *dma_buf,
+ unsigned long page_num,
+ void *addr)
+{
+ DRM_DEBUG_PRIME("enter");
+}
+
+static void vigs_dmabuf_kunmap_atomic(struct dma_buf *dma_buf,
+ unsigned long page_num,
+ void *addr)
+{
+ DRM_DEBUG_PRIME("enter");
+}
+
+static int vigs_dmabuf_mmap(struct dma_buf *dma_buf,
+ struct vm_area_struct *vma)
+{
+ DRM_DEBUG_PRIME("enter");
+
+ return -ENOSYS;
+}
+
+static void *vigs_dmabuf_vmap(struct dma_buf *dma_buf)
+{
+ DRM_DEBUG_PRIME("enter");
+
+ return NULL;
+}
+
+static void vigs_dmabuf_vunmap(struct dma_buf *dma_buf,
+ void *vaddr)
+{
+ DRM_DEBUG_PRIME("enter");
+}
+
+static int vigs_dmabuf_begin_cpu_access(struct dma_buf *dma_buf,
+ size_t start,
+ size_t length,
+ enum dma_data_direction direction)
+{
+ DRM_DEBUG_PRIME("enter");
+
+ return 0;
+}
+
+static void vigs_dmabuf_end_cpu_access(struct dma_buf *dma_buf,
+ size_t start,
+ size_t length,
+ enum dma_data_direction direction)
+{
+ DRM_DEBUG_PRIME("enter");
+}
+
+const struct dma_buf_ops vigs_dmabuf_ops = {
+ .attach = vigs_dmabuf_attach,
+ .detach = vigs_dmabuf_detach,
+ .map_dma_buf = vigs_dmabuf_map,
+ .unmap_dma_buf = vigs_dmabuf_unmap,
+ .release = drm_gem_dmabuf_release,
+ .kmap = vigs_dmabuf_kmap,
+ .kmap_atomic = vigs_dmabuf_kmap_atomic,
+ .kunmap = vigs_dmabuf_kunmap,
+ .kunmap_atomic = vigs_dmabuf_kunmap_atomic,
+ .mmap = vigs_dmabuf_mmap,
+ .vmap = vigs_dmabuf_vmap,
+ .vunmap = vigs_dmabuf_vunmap,
+ .begin_cpu_access = vigs_dmabuf_begin_cpu_access,
+ .end_cpu_access = vigs_dmabuf_end_cpu_access,
+};
+
+int vigs_prime_handle_to_fd(struct drm_device *dev,
+ struct drm_file *file_priv,
+ uint32_t handle,
+ uint32_t flags,
+ int *prime_fd)
+{
+ DRM_DEBUG_PRIME("enter");
+
+ return drm_gem_prime_handle_to_fd(dev, file_priv, handle, flags, prime_fd);
+}
+
+int vigs_prime_fd_to_handle(struct drm_device *dev,
+ struct drm_file *file_priv,
+ int fd,
+ uint32_t *handle)
+{
+ DRM_DEBUG_PRIME("enter");
+
+ return drm_gem_prime_fd_to_handle(dev, file_priv, fd, handle);
+}
+
+struct dma_buf *vigs_dmabuf_prime_export(struct drm_device *dev,
+ struct drm_gem_object *gem_obj,
+ int flags)
+{
+ struct vigs_gem_object *vigs_gem = gem_to_vigs_gem(gem_obj);
+
+ DRM_DEBUG_PRIME("enter");
+
+ return dma_buf_export(gem_obj,
+ &vigs_dmabuf_ops,
+ vigs_gem_size(vigs_gem),
+ flags);
+}
+
+struct drm_gem_object *vigs_dmabuf_prime_import(struct drm_device *dev,
+ struct dma_buf *dma_buf)
+{
+ struct drm_gem_object *obj;
+
+ DRM_DEBUG_PRIME("enter");
+
+ if (dma_buf->ops == &vigs_dmabuf_ops) {
+ obj = dma_buf->priv;
+
+ if (obj->dev == dev) {
+ /*
+ * Importing dmabuf exported from our own gem increases
+ * refcount on gem itself instead of f_count of dmabuf.
+ */
+ drm_gem_object_reference(obj);
+ return obj;
+ }
+ }
+
+ return ERR_PTR(-ENOSYS);
+}
+++ /dev/null
-/**************************************************************************
- *
- * Based on drivers/gpu/drm/vmwgfx/vmwgfx_prime.c
- *
- * Copyright © 2013 VMware, Inc., Palo Alto, CA., USA
- * Copyright © 2014 Samsung Electronics Co., Ltd.
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
- * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
- * USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- **************************************************************************/
-
-#include <linux/dma-buf.h>
-#include <drm/ttm/ttm_object.h>
-
-/*
- * DMA-BUF attach- and mapping methods. No need to implement
- * these until we have other virtual devices use them.
- */
-
-static int vigs_prime_map_attach(struct dma_buf *dma_buf,
- struct device *target_dev,
- struct dma_buf_attachment *attach)
-{
- return -ENOSYS;
-}
-
-static void vigs_prime_map_detach(struct dma_buf *dma_buf,
- struct dma_buf_attachment *attach)
-{
-}
-
-static struct sg_table *vigs_prime_map_dma_buf(struct dma_buf_attachment *attach,
- enum dma_data_direction dir)
-{
- return ERR_PTR(-ENOSYS);
-}
-
-static void vigs_prime_unmap_dma_buf(struct dma_buf_attachment *attach,
- struct sg_table *sgb,
- enum dma_data_direction dir)
-{
-}
-
-static void *vigs_prime_dmabuf_vmap(struct dma_buf *dma_buf)
-{
- return NULL;
-}
-
-static void vigs_prime_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr)
-{
-}
-
-static void *vigs_prime_dmabuf_kmap_atomic(struct dma_buf *dma_buf,
- unsigned long page_num)
-{
- return NULL;
-}
-
-static void vigs_prime_dmabuf_kunmap_atomic(struct dma_buf *dma_buf,
- unsigned long page_num, void *addr)
-{
-
-}
-static void *vigs_prime_dmabuf_kmap(struct dma_buf *dma_buf,
- unsigned long page_num)
-{
- return NULL;
-}
-
-static void vigs_prime_dmabuf_kunmap(struct dma_buf *dma_buf,
- unsigned long page_num, void *addr)
-{
-
-}
-
-static int vigs_prime_dmabuf_mmap(struct dma_buf *dma_buf,
- struct vm_area_struct *vma)
-{
- WARN_ONCE(true, "Attempted use of dmabuf mmap. Bad.\n");
- return -ENOSYS;
-}
-
-const struct dma_buf_ops vigs_prime_dmabuf_ops = {
- .attach = vigs_prime_map_attach,
- .detach = vigs_prime_map_detach,
- .map_dma_buf = vigs_prime_map_dma_buf,
- .unmap_dma_buf = vigs_prime_unmap_dma_buf,
- .release = NULL,
- .kmap = vigs_prime_dmabuf_kmap,
- .kmap_atomic = vigs_prime_dmabuf_kmap_atomic,
- .kunmap = vigs_prime_dmabuf_kunmap,
- .kunmap_atomic = vigs_prime_dmabuf_kunmap_atomic,
- .mmap = vigs_prime_dmabuf_mmap,
- .vmap = vigs_prime_dmabuf_vmap,
- .vunmap = vigs_prime_dmabuf_vunmap,
-};
projects / sdk / emulator / emulator-kernel.git / commitdiff