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libvirt/src/util/pci.h

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implements dettach, reattach and reset for PCI devices * configure.in po/POTFILES.in src/Makefile.am src/libvirt_private.syms src/pci.c src/pci.h: Add implementations of dettach, reattach and reset for PCI devices, patch by Mark McLoughlin Daniel
2009-03-02 16:18:11 +00:00
/*
* Copyright (C) 2009 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Authors:
* Mark McLoughlin <markmc@redhat.com>
*/
#ifndef __VIR_PCI_H__
#define __VIR_PCI_H__
#include "internal.h"
typedef struct _pciDevice pciDevice;
Make pciDeviceList struct opaque * src/util/pci.c, src/util/pci.h: Make the pciDeviceList struct opaque to callers of the API. Add accessor methods for managing devices in the list * src/qemu/qemu_driver.c: Update to use APIs instead of directly accessing pciDeviceList fields
2009-10-27 17:30:16 +00:00
typedef struct _pciDeviceList pciDeviceList;
Simplify PCI hostdev prepare/re-attach using a pciDeviceList type The qemuPrepareHostDevices() and qemuDomainReAttachHostDevices() functions are clutter with a bunch of calls to pciGetDevice() and pciFreeDevice() obscuring the basic logic. Add a pciDeviceList type and add a qemuGetPciHostDeviceList() function to build a list from a domain definition. Use this in prepare/re-attach fto simplify things and eliminate the multiple pciGetDevice calls. This is especially useful because in the next patch we need to iterate the hostdevs list a third time and we also need a list type for keeping track of active devices. * src/pci.[ch]: add pciDeviceList type and also a per-device 'managed' property * src/libvirt_private.syms: export the new functions * src/qemu_driver.c: add qemuGetPciHostDeviceList() and re-write qemuPrepareHostDevices() and qemuDomainReAttachHostDevices() to use it
2009-08-17 14:05:23 +00:00
Remove conn parameter from PCI functions It was used for error reporting only.
2010-02-04 23:16:34 +00:00
pciDevice *pciGetDevice (unsigned domain,
implements dettach, reattach and reset for PCI devices * configure.in po/POTFILES.in src/Makefile.am src/libvirt_private.syms src/pci.c src/pci.h: Add implementations of dettach, reattach and reset for PCI devices, patch by Mark McLoughlin Daniel
2009-03-02 16:18:11 +00:00
unsigned bus,
unsigned slot,
unsigned function);
Remove conn parameter from PCI functions It was used for error reporting only.
2010-02-04 23:16:34 +00:00
void pciFreeDevice (pciDevice *dev);
int pciDettachDevice (pciDevice *dev);
int pciReAttachDevice (pciDevice *dev);
int pciResetDevice (pciDevice *dev,
Maintain a list of active PCI hostdevs and use it in pciResetDevice() As we start/shutdown guests, or hotplug/hot-unplug devices, we can add or delete devices as appropriate from a list of active devices. Then, in pciReset(), we can use this to determine whether its safe to reset a device as a side effect of resetting another device. * src/qemu_conf.h: add activePciHostdevs to qemud_driver * src/qemu_driver.c: maintain the activePciHostdevs list, and pass it to pciResetDevice() * src/pci.[ch]: pass the activeDevs list to pciResetDevice() and use it to determine whether a Secondary Bus Reset is safe
2009-08-17 14:05:23 +00:00
pciDeviceList *activeDevs);
Simplify PCI hostdev prepare/re-attach using a pciDeviceList type The qemuPrepareHostDevices() and qemuDomainReAttachHostDevices() functions are clutter with a bunch of calls to pciGetDevice() and pciFreeDevice() obscuring the basic logic. Add a pciDeviceList type and add a qemuGetPciHostDeviceList() function to build a list from a domain definition. Use this in prepare/re-attach fto simplify things and eliminate the multiple pciGetDevice calls. This is especially useful because in the next patch we need to iterate the hostdevs list a third time and we also need a list type for keeping track of active devices. * src/pci.[ch]: add pciDeviceList type and also a per-device 'managed' property * src/libvirt_private.syms: export the new functions * src/qemu_driver.c: add qemuGetPciHostDeviceList() and re-write qemuPrepareHostDevices() and qemuDomainReAttachHostDevices() to use it
2009-08-17 14:05:23 +00:00
void pciDeviceSetManaged(pciDevice *dev,
unsigned managed);
unsigned pciDeviceGetManaged(pciDevice *dev);
Remove conn parameter from PCI functions It was used for error reporting only.
2010-02-04 23:16:34 +00:00
pciDeviceList *pciDeviceListNew (void);
void pciDeviceListFree (pciDeviceList *list);
int pciDeviceListAdd (pciDeviceList *list,
Simplify PCI hostdev prepare/re-attach using a pciDeviceList type The qemuPrepareHostDevices() and qemuDomainReAttachHostDevices() functions are clutter with a bunch of calls to pciGetDevice() and pciFreeDevice() obscuring the basic logic. Add a pciDeviceList type and add a qemuGetPciHostDeviceList() function to build a list from a domain definition. Use this in prepare/re-attach fto simplify things and eliminate the multiple pciGetDevice calls. This is especially useful because in the next patch we need to iterate the hostdevs list a third time and we also need a list type for keeping track of active devices. * src/pci.[ch]: add pciDeviceList type and also a per-device 'managed' property * src/libvirt_private.syms: export the new functions * src/qemu_driver.c: add qemuGetPciHostDeviceList() and re-write qemuPrepareHostDevices() and qemuDomainReAttachHostDevices() to use it
2009-08-17 14:05:23 +00:00
pciDevice *dev);
Make pciDeviceList struct opaque * src/util/pci.c, src/util/pci.h: Make the pciDeviceList struct opaque to callers of the API. Add accessor methods for managing devices in the list * src/qemu/qemu_driver.c: Update to use APIs instead of directly accessing pciDeviceList fields
2009-10-27 17:30:16 +00:00
pciDevice * pciDeviceListGet (pciDeviceList *list,
int idx);
int pciDeviceListCount (pciDeviceList *list);
Remove conn parameter from PCI functions It was used for error reporting only.
2010-02-04 23:16:34 +00:00
pciDevice * pciDeviceListSteal (pciDeviceList *list,
Make pciDeviceList struct opaque * src/util/pci.c, src/util/pci.h: Make the pciDeviceList struct opaque to callers of the API. Add accessor methods for managing devices in the list * src/qemu/qemu_driver.c: Update to use APIs instead of directly accessing pciDeviceList fields
2009-10-27 17:30:16 +00:00
pciDevice *dev);
Remove conn parameter from PCI functions It was used for error reporting only.
2010-02-04 23:16:34 +00:00
void pciDeviceListDel (pciDeviceList *list,
Simplify PCI hostdev prepare/re-attach using a pciDeviceList type The qemuPrepareHostDevices() and qemuDomainReAttachHostDevices() functions are clutter with a bunch of calls to pciGetDevice() and pciFreeDevice() obscuring the basic logic. Add a pciDeviceList type and add a qemuGetPciHostDeviceList() function to build a list from a domain definition. Use this in prepare/re-attach fto simplify things and eliminate the multiple pciGetDevice calls. This is especially useful because in the next patch we need to iterate the hostdevs list a third time and we also need a list type for keeping track of active devices. * src/pci.[ch]: add pciDeviceList type and also a per-device 'managed' property * src/libvirt_private.syms: export the new functions * src/qemu_driver.c: add qemuGetPciHostDeviceList() and re-write qemuPrepareHostDevices() and qemuDomainReAttachHostDevices() to use it
2009-08-17 14:05:23 +00:00
pciDevice *dev);
pciDevice * pciDeviceListFind (pciDeviceList *list,
pciDevice *dev);
Check active domain hostdevs before allowing PCI reset If a PCI device reset causes other devices to be reset, allow it so long as those other devices are note assigned to another active domain. Note, we need to take the driver lock qemudNodeDeviceReset() because the check function will iterate over the domain list. * src/qemu_conf.c: add qemuCheckPciHostDevice() to iterate over active domains checking whether the affected device is assigned * src/pci.[ch]: add pciDeviceEquals() helper
2009-08-14 07:31:11 +00:00
Add helper APIs for iterating over PCI device resource files * src/pci.h, src/pci.c: Helper for iterating over PCI device resource files * src/libvirt_private.syms: Export pciDeviceFileIterate
2009-08-14 13:20:40 +00:00
/*
* Callback that will be invoked once for each file
* associated with / used for PCI host device access.
*
* Should return 0 if successfully processed, or
* -1 to indicate error and abort iteration
*/
typedef int (*pciDeviceFileActor)(virConnectPtr conn, pciDevice *dev,
const char *path, void *opaque);
int pciDeviceFileIterate(virConnectPtr conn,
pciDevice *dev,
pciDeviceFileActor actor,
void *opaque);
Remove conn parameter from PCI functions It was used for error reporting only.
2010-02-04 23:16:34 +00:00
int pciDeviceIsAssignable(pciDevice *dev,
Tests for ACS in PCIe switches New pciDeviceIsAssignable() function for checking whether a given PCI device can be assigned to a guest was added. Currently it only checks for ACS being enabled on all PCIe switches between root and the PCI device. In the future, it could be the right place to check whether a device is unbound or bound to a stub driver. Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
2009-12-22 17:21:15 +00:00
int strict_acs_check);
qemu: Fix race between device rebind and kvm cleanup Certain hypervisors (like qemu/kvm) map the PCI bar(s) on the host when doing device passthrough. This can lead to a race condition where the hypervisor is still cleaning up the device while libvirt is trying to re-attach it to the host device driver. To avoid this situation, we look through /proc/iomem, and if the hypervisor is still holding onto the bar (denoted by the string in the matcher variable), then we can wait around a bit for that to clear up. v2: Thanks to review by DV, make sure we wait the full timeout per-device Signed-off-by: Chris Lalancette <clalance@redhat.com>
2010-01-20 20:53:59 +00:00
int pciWaitForDeviceCleanup(pciDevice *dev, const char *matcher);
Tests for ACS in PCIe switches New pciDeviceIsAssignable() function for checking whether a given PCI device can be assigned to a guest was added. Currently it only checks for ACS being enabled on all PCIe switches between root and the PCI device. In the future, it could be the right place to check whether a device is unbound or bound to a stub driver. Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
2009-12-22 17:21:15 +00:00
implements dettach, reattach and reset for PCI devices * configure.in po/POTFILES.in src/Makefile.am src/libvirt_private.syms src/pci.c src/pci.h: Add implementations of dettach, reattach and reset for PCI devices, patch by Mark McLoughlin Daniel
2009-03-02 16:18:11 +00:00
#endif /* __VIR_PCI_H__ */
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