Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / gpu / drm / qxl / qxl_dumb.c

diff --git a/kernel/drivers/gpu/drm/qxl/qxl_dumb.c b/kernel/drivers/gpu/drm/qxl/qxl_dumb.c
new file mode 100644 (file)
index 0000000..d34bb41
--- /dev/null
+++ b/kernel/drivers/gpu/drm/qxl/qxl_dumb.c
@@ -0,0 +1,86 @@
+/*
+ * Copyright 2013 Red Hat Inc.
+ *
+ * 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, sublicense,
+ * 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 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
+ *
+ * Authors: Dave Airlie
+ *          Alon Levy
+ */
+
+#include "qxl_drv.h"
+#include "qxl_object.h"
+
+/* dumb ioctls implementation */
+
+int qxl_mode_dumb_create(struct drm_file *file_priv,
+                           struct drm_device *dev,
+                           struct drm_mode_create_dumb *args)
+{
+       struct qxl_device *qdev = dev->dev_private;
+       struct qxl_bo *qobj;
+       uint32_t handle;
+       int r;
+       struct qxl_surface surf;
+       uint32_t pitch, format;
+       pitch = args->width * ((args->bpp + 1) / 8);
+       args->size = pitch * args->height;
+       args->size = ALIGN(args->size, PAGE_SIZE);
+
+       switch (args->bpp) {
+       case 16:
+               format = SPICE_SURFACE_FMT_16_565;
+               break;
+       case 32:
+               format = SPICE_SURFACE_FMT_32_xRGB;
+               break;
+       default:
+               return -EINVAL;
+       }
+         
+       surf.width = args->width;
+       surf.height = args->height;
+       surf.stride = pitch;
+       surf.format = format;
+       r = qxl_gem_object_create_with_handle(qdev, file_priv,
+                                             QXL_GEM_DOMAIN_VRAM,
+                                             args->size, &surf, &qobj,
+                                             &handle);
+       if (r)
+               return r;
+       args->pitch = pitch;
+       args->handle = handle;
+       return 0;
+}
+
+int qxl_mode_dumb_mmap(struct drm_file *file_priv,
+                      struct drm_device *dev,
+                      uint32_t handle, uint64_t *offset_p)
+{
+       struct drm_gem_object *gobj;
+       struct qxl_bo *qobj;
+
+       BUG_ON(!offset_p);
+       gobj = drm_gem_object_lookup(dev, file_priv, handle);
+       if (gobj == NULL)
+               return -ENOENT;
+       qobj = gem_to_qxl_bo(gobj);
+       *offset_p = qxl_bo_mmap_offset(qobj);
+       drm_gem_object_unreference_unlocked(gobj);
+       return 0;
+}