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path: root/drivers/gpu/drm/vmwgfx/vmwgfx_system_manager.c
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Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_system_manager.c')
-rw-r--r--drivers/gpu/drm/vmwgfx/vmwgfx_system_manager.c90
1 files changed, 90 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_system_manager.c b/drivers/gpu/drm/vmwgfx/vmwgfx_system_manager.c
new file mode 100644
index 000000000000..b0005b03a617
--- /dev/null
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_system_manager.c
@@ -0,0 +1,90 @@
+/* SPDX-License-Identifier: GPL-2.0 OR MIT */
+/*
+ * Copyright 2021 VMware, 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 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.
+ *
+ */
+
+#include "vmwgfx_drv.h"
+
+#include <drm/ttm/ttm_bo_driver.h>
+#include <drm/ttm/ttm_device.h>
+#include <drm/ttm/ttm_placement.h>
+#include <drm/ttm/ttm_resource.h>
+#include <linux/slab.h>
+
+
+static int vmw_sys_man_alloc(struct ttm_resource_manager *man,
+ struct ttm_buffer_object *bo,
+ const struct ttm_place *place,
+ struct ttm_resource **res)
+{
+ *res = kzalloc(sizeof(**res), GFP_KERNEL);
+ if (!*res)
+ return -ENOMEM;
+
+ ttm_resource_init(bo, place, *res);
+ return 0;
+}
+
+static void vmw_sys_man_free(struct ttm_resource_manager *man,
+ struct ttm_resource *res)
+{
+ kfree(res);
+}
+
+static const struct ttm_resource_manager_func vmw_sys_manager_func = {
+ .alloc = vmw_sys_man_alloc,
+ .free = vmw_sys_man_free,
+};
+
+int vmw_sys_man_init(struct vmw_private *dev_priv)
+{
+ struct ttm_device *bdev = &dev_priv->bdev;
+ struct ttm_resource_manager *man =
+ kzalloc(sizeof(*man), GFP_KERNEL);
+
+ if (!man)
+ return -ENOMEM;
+
+ man->use_tt = true;
+ man->func = &vmw_sys_manager_func;
+
+ ttm_resource_manager_init(man, 0);
+ ttm_set_driver_manager(bdev, VMW_PL_SYSTEM, man);
+ ttm_resource_manager_set_used(man, true);
+ return 0;
+}
+
+void vmw_sys_man_fini(struct vmw_private *dev_priv)
+{
+ struct ttm_resource_manager *man = ttm_manager_type(&dev_priv->bdev,
+ VMW_PL_SYSTEM);
+
+ ttm_resource_manager_evict_all(&dev_priv->bdev, man);
+
+ ttm_resource_manager_set_used(man, false);
+ ttm_resource_manager_cleanup(man);
+
+ ttm_set_driver_manager(&dev_priv->bdev, VMW_PL_SYSTEM, NULL);
+ kfree(man);
+}