drivers/misc/vmw_vmci/vmci_doorbell.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * VMware VMCI Driver
   4  *
   5  * Copyright (C) 2012 VMware, Inc. All rights reserved.
   6  */
   7
   8 #ifndef VMCI_DOORBELL_H
   9 #define VMCI_DOORBELL_H
  10
  11 #include <linux/vmw_vmci_defs.h>
  12 #include <linux/types.h>
  13
  14 #include "vmci_driver.h"
  15
  16 /*
  17  * VMCINotifyResourceInfo: Used to create and destroy doorbells, and
  18  * generate a notification for a doorbell or queue pair.
  19  */
  20 struct vmci_dbell_notify_resource_info {
  21         struct vmci_handle handle;
  22         u16 resource;
  23         u16 action;
  24         s32 result;
  25 };
  26
  27 /*
  28  * Structure used for checkpointing the doorbell mappings. It is
  29  * written to the checkpoint as is, so changing this structure will
  30  * break checkpoint compatibility.
  31  */
  32 struct dbell_cpt_state {
  33         struct vmci_handle handle;
  34         u64 bitmap_idx;
  35 };
  36
  37 int vmci_dbell_host_context_notify(u32 src_cid, struct vmci_handle handle);
  38 int vmci_dbell_get_priv_flags(struct vmci_handle handle, u32 *priv_flags);
  39
  40 bool vmci_dbell_register_notification_bitmap(u64 bitmap_ppn);
  41 void vmci_dbell_scan_notification_entries(u8 *bitmap);
  42
  43 #endif /* VMCI_DOORBELL_H */