vmwgfx: add dumb ioctl support

Testing and works with the -modesetting driver,

Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
index 33bfc20..ba2c35d 100644 (file)
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -1155,6 +1155,11 @@ static struct drm_driver driver = {
        .open = vmw_driver_open,
        .preclose = vmw_preclose,
        .postclose = vmw_postclose,
+
+       .dumb_create = vmw_dumb_create,
+       .dumb_map_offset = vmw_dumb_map_offset,
+       .dumb_destroy = vmw_dumb_destroy,
+
        .fops = &vmwgfx_driver_fops,
        .name = VMWGFX_DRIVER_NAME,
        .desc = VMWGFX_DRIVER_DESC,

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
index d0f2c07..29c984f 100644 (file)
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
@@ -645,6 +645,16 @@ int vmw_kms_readback(struct vmw_private *dev_priv,
 int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data,
                                struct drm_file *file_priv);
 
+int vmw_dumb_create(struct drm_file *file_priv,
+                   struct drm_device *dev,
+                   struct drm_mode_create_dumb *args);
+
+int vmw_dumb_map_offset(struct drm_file *file_priv,
+                       struct drm_device *dev, uint32_t handle,
+                       uint64_t *offset);
+int vmw_dumb_destroy(struct drm_file *file_priv,
+                    struct drm_device *dev,
+                    uint32_t handle);
 /**
  * Overlay control - vmwgfx_overlay.c
  */

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
index 22bf9a2..2c6ffe0 100644 (file)
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
@@ -1917,3 +1917,76 @@ err_ref:
        vmw_resource_unreference(&res);
        return ret;
 }
+
+
+int vmw_dumb_create(struct drm_file *file_priv,
+                   struct drm_device *dev,
+                   struct drm_mode_create_dumb *args)
+{
+       struct vmw_private *dev_priv = vmw_priv(dev);
+       struct vmw_master *vmaster = vmw_master(file_priv->master);
+       struct vmw_user_dma_buffer *vmw_user_bo;
+       struct ttm_buffer_object *tmp;
+       int ret;
+
+       args->pitch = args->width * ((args->bpp + 7) / 8);
+       args->size = args->pitch * args->height;
+
+       vmw_user_bo = kzalloc(sizeof(*vmw_user_bo), GFP_KERNEL);
+       if (vmw_user_bo == NULL)
+               return -ENOMEM;
+
+       ret = ttm_read_lock(&vmaster->lock, true);
+       if (ret != 0) {
+               kfree(vmw_user_bo);
+               return ret;
+       }
+
+       ret = vmw_dmabuf_init(dev_priv, &vmw_user_bo->dma, args->size,
+                             &vmw_vram_sys_placement, true,
+                             &vmw_user_dmabuf_destroy);
+       if (ret != 0)
+               goto out_no_dmabuf;
+
+       tmp = ttm_bo_reference(&vmw_user_bo->dma.base);
+       ret = ttm_base_object_init(vmw_fpriv(file_priv)->tfile,
+                                  &vmw_user_bo->base,
+                                  false,
+                                  ttm_buffer_type,
+                                  &vmw_user_dmabuf_release, NULL);
+       if (unlikely(ret != 0))
+               goto out_no_base_object;
+
+       args->handle = vmw_user_bo->base.hash.key;
+
+out_no_base_object:
+       ttm_bo_unref(&tmp);
+out_no_dmabuf:
+       ttm_read_unlock(&vmaster->lock);
+       return ret;
+}
+
+int vmw_dumb_map_offset(struct drm_file *file_priv,
+                       struct drm_device *dev, uint32_t handle,
+                       uint64_t *offset)
+{
+       struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
+       struct vmw_dma_buffer *out_buf;
+       int ret;
+
+       ret = vmw_user_dmabuf_lookup(tfile, handle, &out_buf);
+       if (ret != 0)
+               return -EINVAL;
+
+       *offset = out_buf->base.addr_space_offset;
+       vmw_dmabuf_unreference(&out_buf);
+       return 0;
+}
+
+int vmw_dumb_destroy(struct drm_file *file_priv,
+                    struct drm_device *dev,
+                    uint32_t handle)
+{
+       return ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile,
+                                        handle, TTM_REF_USAGE);
+}