include/hw/remote/iohub.h

   1 /*
   2  * IO Hub for remote device
   3  *
   4  * Copyright © 2018, 2021 Oracle and/or its affiliates.
   5  *
   6  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   7  * See the COPYING file in the top-level directory.
   8  *
   9  */
  10
  11 #ifndef REMOTE_IOHUB_H
  12 #define REMOTE_IOHUB_H
  13
  14 #include "hw/pci/pci.h"
  15 #include "qemu/event_notifier.h"
  16 #include "qemu/thread-posix.h"
  17 #include "hw/remote/mpqemu-link.h"
  18
  19 #define REMOTE_IOHUB_NB_PIRQS    PCI_DEVFN_MAX
  20
  21 typedef struct ResampleToken {
  22     void *iohub;
  23     int pirq;
  24 } ResampleToken;
  25
  26 typedef struct RemoteIOHubState {
  27     PCIDevice d;
  28     EventNotifier irqfds[REMOTE_IOHUB_NB_PIRQS];
  29     EventNotifier resamplefds[REMOTE_IOHUB_NB_PIRQS];
  30     unsigned int irq_level[REMOTE_IOHUB_NB_PIRQS];
  31     ResampleToken token[REMOTE_IOHUB_NB_PIRQS];
  32     QemuMutex irq_level_lock[REMOTE_IOHUB_NB_PIRQS];
  33 } RemoteIOHubState;
  34
  35 int remote_iohub_map_irq(PCIDevice *pci_dev, int intx);
  36 void remote_iohub_set_irq(void *opaque, int pirq, int level);
  37 void process_set_irqfd_msg(PCIDevice *pci_dev, MPQemuMsg *msg);
  38
  39 void remote_iohub_init(RemoteIOHubState *iohub);
  40 void remote_iohub_finalize(RemoteIOHubState *iohub);
  41
  42 #endif