v4.19.13 snapshot.
diff --git a/include/linux/dca.h b/include/linux/dca.h
new file mode 100644
index 0000000..ad956c2
--- /dev/null
+++ b/include/linux/dca.h
@@ -0,0 +1,82 @@
+/*
+ * Copyright(c) 2007 - 2009 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59
+ * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * The full GNU General Public License is included in this distribution in the
+ * file called COPYING.
+ */
+#ifndef DCA_H
+#define DCA_H
+
+#include <linux/pci.h>
+
+/* DCA Provider API */
+
+/* DCA Notifier Interface */
+void dca_register_notify(struct notifier_block *nb);
+void dca_unregister_notify(struct notifier_block *nb);
+
+#define DCA_PROVIDER_ADD 0x0001
+#define DCA_PROVIDER_REMOVE 0x0002
+
+struct dca_provider {
+ struct list_head node;
+ const struct dca_ops *ops;
+ struct device *cd;
+ int id;
+};
+
+struct dca_domain {
+ struct list_head node;
+ struct list_head dca_providers;
+ struct pci_bus *pci_rc;
+};
+
+struct dca_ops {
+ int (*add_requester) (struct dca_provider *, struct device *);
+ int (*remove_requester) (struct dca_provider *, struct device *);
+ u8 (*get_tag) (struct dca_provider *, struct device *,
+ int cpu);
+ int (*dev_managed) (struct dca_provider *, struct device *);
+};
+
+struct dca_provider *alloc_dca_provider(const struct dca_ops *ops,
+ int priv_size);
+void free_dca_provider(struct dca_provider *dca);
+int register_dca_provider(struct dca_provider *dca, struct device *dev);
+void unregister_dca_provider(struct dca_provider *dca, struct device *dev);
+
+static inline void *dca_priv(struct dca_provider *dca)
+{
+ return (void *)dca + sizeof(struct dca_provider);
+}
+
+/* Requester API */
+#define DCA_GET_TAG_TWO_ARGS
+int dca_add_requester(struct device *dev);
+int dca_remove_requester(struct device *dev);
+u8 dca_get_tag(int cpu);
+u8 dca3_get_tag(struct device *dev, int cpu);
+
+/* internal stuff */
+int __init dca_sysfs_init(void);
+void __exit dca_sysfs_exit(void);
+int dca_sysfs_add_provider(struct dca_provider *dca, struct device *dev);
+void dca_sysfs_remove_provider(struct dca_provider *dca);
+int dca_sysfs_add_req(struct dca_provider *dca, struct device *dev, int slot);
+void dca_sysfs_remove_req(struct dca_provider *dca, int slot);
+
+#endif /* DCA_H */