1685a6bf8SThomas Gleixner /* SPDX-License-Identifier: GPL-2.0-only */
283e2ec76SGeorge Zhang /*
383e2ec76SGeorge Zhang  * VMware VMCI Driver
483e2ec76SGeorge Zhang  *
583e2ec76SGeorge Zhang  * Copyright (C) 2012 VMware, Inc. All rights reserved.
683e2ec76SGeorge Zhang  */
783e2ec76SGeorge Zhang 
883e2ec76SGeorge Zhang #ifndef VMCI_DOORBELL_H
983e2ec76SGeorge Zhang #define VMCI_DOORBELL_H
1083e2ec76SGeorge Zhang 
1183e2ec76SGeorge Zhang #include <linux/vmw_vmci_defs.h>
1283e2ec76SGeorge Zhang #include <linux/types.h>
1383e2ec76SGeorge Zhang 
1483e2ec76SGeorge Zhang #include "vmci_driver.h"
1583e2ec76SGeorge Zhang 
1683e2ec76SGeorge Zhang /*
1783e2ec76SGeorge Zhang  * VMCINotifyResourceInfo: Used to create and destroy doorbells, and
1883e2ec76SGeorge Zhang  * generate a notification for a doorbell or queue pair.
1983e2ec76SGeorge Zhang  */
2083e2ec76SGeorge Zhang struct vmci_dbell_notify_resource_info {
2183e2ec76SGeorge Zhang 	struct vmci_handle handle;
2283e2ec76SGeorge Zhang 	u16 resource;
2383e2ec76SGeorge Zhang 	u16 action;
2483e2ec76SGeorge Zhang 	s32 result;
2583e2ec76SGeorge Zhang };
2683e2ec76SGeorge Zhang 
2783e2ec76SGeorge Zhang /*
2883e2ec76SGeorge Zhang  * Structure used for checkpointing the doorbell mappings. It is
2983e2ec76SGeorge Zhang  * written to the checkpoint as is, so changing this structure will
3083e2ec76SGeorge Zhang  * break checkpoint compatibility.
3183e2ec76SGeorge Zhang  */
3283e2ec76SGeorge Zhang struct dbell_cpt_state {
3383e2ec76SGeorge Zhang 	struct vmci_handle handle;
3483e2ec76SGeorge Zhang 	u64 bitmap_idx;
3583e2ec76SGeorge Zhang };
3683e2ec76SGeorge Zhang 
3783e2ec76SGeorge Zhang int vmci_dbell_host_context_notify(u32 src_cid, struct vmci_handle handle);
3883e2ec76SGeorge Zhang int vmci_dbell_get_priv_flags(struct vmci_handle handle, u32 *priv_flags);
3983e2ec76SGeorge Zhang 
40f2db7361SVishnu DASA bool vmci_dbell_register_notification_bitmap(u64 bitmap_ppn);
4183e2ec76SGeorge Zhang void vmci_dbell_scan_notification_entries(u8 *bitmap);
4283e2ec76SGeorge Zhang 
4383e2ec76SGeorge Zhang #endif /* VMCI_DOORBELL_H */
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