1 files changed, 134 insertions, 0 deletions
diff --git a/xorg-server/hw/xfree86/drivers/modesetting/dumb_bo.c b/xorg-server/hw/xfree86/drivers/modesetting/dumb_bo.c
new file mode 100644
index 000000000..58d420e07
--- /dev/null
+++ b/xorg-server/hw/xfree86/drivers/modesetting/dumb_bo.c
@@ -0,0 +1,134 @@
+/*
+ * Copyright © 2007 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 (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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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 <airlied@redhat.com>
+ *
+ */
+
+#include "dumb_bo.h"
+
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <unistd.h>
+#include <xf86drm.h>
+
+struct dumb_bo *
+dumb_bo_create(int fd,
+               const unsigned width, const unsigned height, const unsigned bpp)
+{
+    struct drm_mode_create_dumb arg;
+    struct dumb_bo *bo;
+    int ret;
+
+    bo = calloc(1, sizeof(*bo));
+    if (!bo)
+        return NULL;
+
+    memset(&arg, 0, sizeof(arg));
+    arg.width = width;
+    arg.height = height;
+    arg.bpp = bpp;
+
+    ret = drmIoctl(fd, DRM_IOCTL_MODE_CREATE_DUMB, &arg);
+    if (ret)
+        goto err_free;
+
+    bo->handle = arg.handle;
+    bo->size = arg.size;
+    bo->pitch = arg.pitch;
+
+    return bo;
+ err_free:
+    free(bo);
+    return NULL;
+}
+
+int
+dumb_bo_map(int fd, struct dumb_bo *bo)
+{
+    struct drm_mode_map_dumb arg;
+    int ret;
+    void *map;
+
+    if (bo->ptr) {
+        return 0;
+    }
+
+    memset(&arg, 0, sizeof(arg));
+    arg.handle = bo->handle;
+
+    ret = drmIoctl(fd, DRM_IOCTL_MODE_MAP_DUMB, &arg);
+    if (ret)
+        return ret;
+
+    map = mmap(0, bo->size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, arg.offset);
+    if (map == MAP_FAILED)
+        return -errno;
+
+    bo->ptr = map;
+    return 0;
+}
+
+int
+dumb_bo_destroy(int fd, struct dumb_bo *bo)
+{
+    struct drm_mode_destroy_dumb arg;
+    int ret;
+
+    if (bo->ptr) {
+        munmap(bo->ptr, bo->size);
+        bo->ptr = NULL;
+    }
+
+    memset(&arg, 0, sizeof(arg));
+    arg.handle = bo->handle;
+    ret = drmIoctl(fd, DRM_IOCTL_MODE_DESTROY_DUMB, &arg);
+    if (ret)
+        return -errno;
+
+    free(bo);
+    return 0;
+}
+
+struct dumb_bo *
+dumb_get_bo_from_fd(int fd, int handle, int pitch, int size)
+{
+    struct dumb_bo *bo;
+    int ret;
+
+    bo = calloc(1, sizeof(*bo));
+    if (!bo)
+        return NULL;
+
+    ret = drmPrimeFDToHandle(fd, handle, &bo->handle);
+    if (ret) {
+        free(bo);
+        return NULL;
+    }
+    bo->pitch = pitch;
+    bo->size = size;
+    return bo;
+}