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multi-process: setup PCI host bridge for remote device

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PCI host bridge is setup for the remote device process. It is
implemented using remote-pcihost object. It is an extension of the PCI
host bridge setup by QEMU.
Remote-pcihost configures a PCI bus which could be used by the remote
PCI device to latch on to.

Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Signed-off-by: John G Johnson <john.g.johnson@oracle.com>
Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 0871ba857abb2eafacde07e7fe66a3f12415bfb2.1611938319.git.jag.raman@oracle.com

[Added PCI_EXPRESS condition in hw/remote/Kconfig since remote-pcihost
needs PCIe. This solves "make check" failure on s390x. Fix suggested by
Philippe Mathieu-Daudé <philmd@redhat.com> and Thomas Huth
<thuth@redhat.com>.
--Stefan]

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Jagannathan Raman 2021-01-29 11:46:06 -05:00 • committed by Stefan Hajnoczi
parent 3090de695b
commit 6fbd84d632
6 changed files with 112 additions and 1 deletions
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29
include/hw/pci-host/remote.h Normal file
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/*
* PCI Host for remote device
*
* Copyright © 2018, 2021 Oracle and/or its affiliates.
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*
*/
#ifndef REMOTE_PCIHOST_H
#define REMOTE_PCIHOST_H
#include "exec/memory.h"
#include "hw/pci/pcie_host.h"
#define TYPE_REMOTE_PCIHOST "remote-pcihost"
OBJECT_DECLARE_SIMPLE_TYPE(RemotePCIHost, REMOTE_PCIHOST)
struct RemotePCIHost {
/*< private >*/
PCIExpressHost parent_obj;
/*< public >*/
MemoryRegion *mr_pci_mem;
MemoryRegion *mr_sys_io;
};
#endif