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qemu: new functions to calculate/set device pciConnectFlags

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The lowest level function of this trio
(qemuDomainDeviceCalculatePCIConnectFlags()) aims to be the single
authority for the virDomainPCIConnectFlags to use for any given device
using a particular arch/machinetype/qemu-binary.

qemuDomainFillDevicePCIConnectFlags() sets info->pciConnectFlags in a
single device (unless it has no virDomainDeviceInfo, in which case
it's a NOP).

qemuDomainFillAllPCIConnectFlags() sets info->pciConnectFlags in all
devices that have a virDomainDeviceInfo

The latter two functions aren't called anywhere yet. This commit is
just making them available. Later patches will replace all the current
hodge-podge of flag settings with calls to this single authority.
This commit is contained in:
Laine Stump 2016-09-04 16:03:57 -04:00
parent 50adb8a660
commit bd776c2b09
2 changed files with 371 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
src/conf/device_conf.h
View File

@ -142,6 +142,11 @@ typedef struct _virDomainDeviceInfo {
/* bootIndex is only used for disk, network interface, hostdev
* and redirdev devices */
unsigned int bootIndex;
/* pciConnectFlags is only used internally during address
* assignment, never saved and never reported.
*/
int pciConnectFlags; /* enum virDomainPCIConnectFlags */
} virDomainDeviceInfo, *virDomainDeviceInfoPtr;

366
src/qemu/qemu_domain_address.c
View File

@ -409,6 +409,372 @@ qemuDomainAssignARMVirtioMMIOAddresses(virDomainDefPtr def,
}
/**
* qemuDomainDeviceCalculatePCIConnectFlags:
*
* @dev: The device to be checked
* @pcieFlags: flags to use for a known PCI Express device
* @virtioFlags: flags to use for a virtio device (properly vetted
* for the current qemu binary and arch/machinetype)
*
* Lowest level function to determine PCI connectFlags for a
* device. This function relies on the next higher-level function
* determining the value for pcieFlags and virtioFlags in advance -
* this is to make it more efficient to call multiple times.
*
* Returns appropriate virDomainPCIConnectFlags for this device in
* this domain, or 0 if the device doesn't connect using PCI. There
* is no failure.
*/
static virDomainPCIConnectFlags
qemuDomainDeviceCalculatePCIConnectFlags(virDomainDeviceDefPtr dev,
virDomainPCIConnectFlags pcieFlags
ATTRIBUTE_UNUSED,
virDomainPCIConnectFlags virtioFlags
ATTRIBUTE_UNUSED)
{
virDomainPCIConnectFlags pciFlags = (VIR_PCI_CONNECT_TYPE_PCI_DEVICE |
VIR_PCI_CONNECT_HOTPLUGGABLE);
switch ((virDomainDeviceType) dev->type) {
case VIR_DOMAIN_DEVICE_CONTROLLER: {
virDomainControllerDefPtr cont = dev->data.controller;
switch ((virDomainControllerType) cont->type) {
case VIR_DOMAIN_CONTROLLER_TYPE_PCI:
return virDomainPCIControllerModelToConnectType(cont->model);
case VIR_DOMAIN_CONTROLLER_TYPE_SATA:
return pciFlags;
case VIR_DOMAIN_CONTROLLER_TYPE_USB:
switch ((virDomainControllerModelUSB) cont->model) {
case VIR_DOMAIN_CONTROLLER_MODEL_USB_NEC_XHCI:
return pciFlags;
case VIR_DOMAIN_CONTROLLER_MODEL_USB_EHCI:
case VIR_DOMAIN_CONTROLLER_MODEL_USB_ICH9_EHCI1:
case VIR_DOMAIN_CONTROLLER_MODEL_USB_ICH9_UHCI1:
case VIR_DOMAIN_CONTROLLER_MODEL_USB_ICH9_UHCI2:
case VIR_DOMAIN_CONTROLLER_MODEL_USB_ICH9_UHCI3:
case VIR_DOMAIN_CONTROLLER_MODEL_USB_VT82C686B_UHCI:
case VIR_DOMAIN_CONTROLLER_MODEL_USB_PIIX3_UHCI:
case VIR_DOMAIN_CONTROLLER_MODEL_USB_PIIX4_UHCI:
case VIR_DOMAIN_CONTROLLER_MODEL_USB_PCI_OHCI:
return pciFlags;
case VIR_DOMAIN_CONTROLLER_MODEL_USB_QUSB1: /* xen only */
case VIR_DOMAIN_CONTROLLER_MODEL_USB_QUSB2: /* xen only */
case VIR_DOMAIN_CONTROLLER_MODEL_USB_NONE:
case VIR_DOMAIN_CONTROLLER_MODEL_USB_LAST:
/* should be 0 */
return pciFlags;
}
case VIR_DOMAIN_CONTROLLER_TYPE_IDE:
case VIR_DOMAIN_CONTROLLER_TYPE_SCSI:
case VIR_DOMAIN_CONTROLLER_TYPE_VIRTIO_SERIAL:
return pciFlags;
case VIR_DOMAIN_CONTROLLER_TYPE_FDC:
case VIR_DOMAIN_CONTROLLER_TYPE_CCID:
case VIR_DOMAIN_CONTROLLER_TYPE_LAST:
/* should be 0 */
return pciFlags;
}
}
case VIR_DOMAIN_DEVICE_FS:
/* the only type of filesystem so far is virtio-9p-pci */
return pciFlags;
case VIR_DOMAIN_DEVICE_NET: {
virDomainNetDefPtr net = dev->data.net;
/* NB: a type='hostdev' will use PCI, but its
* address is assigned when we're assigning the
* addresses for other hostdev devices.
*/
if (net->type == VIR_DOMAIN_NET_TYPE_HOSTDEV ||
STREQ(net->model, "usb-net")) {
/* should be 0 */
return pciFlags;
}
return pciFlags;
}
case VIR_DOMAIN_DEVICE_SOUND:
switch ((virDomainSoundModel) dev->data.sound->model) {
case VIR_DOMAIN_SOUND_MODEL_ES1370:
case VIR_DOMAIN_SOUND_MODEL_AC97:
case VIR_DOMAIN_SOUND_MODEL_ICH6:
case VIR_DOMAIN_SOUND_MODEL_ICH9:
return pciFlags;
case VIR_DOMAIN_SOUND_MODEL_SB16:
case VIR_DOMAIN_SOUND_MODEL_PCSPK:
case VIR_DOMAIN_SOUND_MODEL_USB:
case VIR_DOMAIN_SOUND_MODEL_LAST:
/* should be 0 */
return pciFlags;
}
case VIR_DOMAIN_DEVICE_DISK:
switch ((virDomainDiskBus) dev->data.disk->bus) {
case VIR_DOMAIN_DISK_BUS_VIRTIO:
return pciFlags; /* only virtio disks use PCI */
case VIR_DOMAIN_DISK_BUS_IDE:
case VIR_DOMAIN_DISK_BUS_FDC:
case VIR_DOMAIN_DISK_BUS_SCSI:
case VIR_DOMAIN_DISK_BUS_XEN:
case VIR_DOMAIN_DISK_BUS_USB:
case VIR_DOMAIN_DISK_BUS_UML:
case VIR_DOMAIN_DISK_BUS_SATA:
case VIR_DOMAIN_DISK_BUS_SD:
case VIR_DOMAIN_DISK_BUS_LAST:
/* should be 0 */
return pciFlags;
}
case VIR_DOMAIN_DEVICE_HOSTDEV:
return pciFlags;
case VIR_DOMAIN_DEVICE_MEMBALLOON:
switch ((virDomainMemballoonModel) dev->data.memballoon->model) {
case VIR_DOMAIN_MEMBALLOON_MODEL_VIRTIO:
return pciFlags;
case VIR_DOMAIN_MEMBALLOON_MODEL_XEN:
case VIR_DOMAIN_MEMBALLOON_MODEL_NONE:
case VIR_DOMAIN_MEMBALLOON_MODEL_LAST:
/* should be 0 (not PCI) */
return pciFlags;
}
case VIR_DOMAIN_DEVICE_RNG:
switch ((virDomainRNGModel) dev->data.rng->model) {
case VIR_DOMAIN_RNG_MODEL_VIRTIO:
return pciFlags;
case VIR_DOMAIN_RNG_MODEL_LAST:
/* should be 0 */
return pciFlags;
}
case VIR_DOMAIN_DEVICE_WATCHDOG:
/* only one model connects using PCI */
switch ((virDomainWatchdogModel) dev->data.watchdog->model) {
case VIR_DOMAIN_WATCHDOG_MODEL_I6300ESB:
return pciFlags;
case VIR_DOMAIN_WATCHDOG_MODEL_IB700:
case VIR_DOMAIN_WATCHDOG_MODEL_DIAG288:
case VIR_DOMAIN_WATCHDOG_MODEL_LAST:
/* should be 0 */
return pciFlags;
}
case VIR_DOMAIN_DEVICE_VIDEO:
switch ((virDomainVideoType) dev->data.video->type) {
case VIR_DOMAIN_VIDEO_TYPE_VIRTIO:
case VIR_DOMAIN_VIDEO_TYPE_VGA:
case VIR_DOMAIN_VIDEO_TYPE_CIRRUS:
case VIR_DOMAIN_VIDEO_TYPE_VMVGA:
case VIR_DOMAIN_VIDEO_TYPE_XEN:
case VIR_DOMAIN_VIDEO_TYPE_VBOX:
case VIR_DOMAIN_VIDEO_TYPE_QXL:
case VIR_DOMAIN_VIDEO_TYPE_PARALLELS:
return pciFlags;
case VIR_DOMAIN_VIDEO_TYPE_LAST:
/* should be 0 */
return pciFlags;
}
case VIR_DOMAIN_DEVICE_SHMEM:
return pciFlags;
case VIR_DOMAIN_DEVICE_INPUT:
switch ((virDomainInputBus) dev->data.input->bus) {
case VIR_DOMAIN_INPUT_BUS_VIRTIO:
return pciFlags;
case VIR_DOMAIN_INPUT_BUS_PS2:
case VIR_DOMAIN_INPUT_BUS_USB:
case VIR_DOMAIN_INPUT_BUS_XEN:
case VIR_DOMAIN_INPUT_BUS_PARALLELS:
case VIR_DOMAIN_INPUT_BUS_LAST:
/* should be 0 */
return pciFlags;
}
case VIR_DOMAIN_DEVICE_CHR:
switch ((virDomainChrSerialTargetType) dev->data.chr->targetType) {
case VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_PCI:
return pciFlags;
case VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_ISA:
case VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_USB:
case VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_LAST:
/* should be 0 */
return pciFlags;
}
/* These devices don't ever connect with PCI */
case VIR_DOMAIN_DEVICE_NVRAM:
case VIR_DOMAIN_DEVICE_TPM:
case VIR_DOMAIN_DEVICE_PANIC:
case VIR_DOMAIN_DEVICE_MEMORY:
case VIR_DOMAIN_DEVICE_HUB:
case VIR_DOMAIN_DEVICE_REDIRDEV:
case VIR_DOMAIN_DEVICE_SMARTCARD:
/* These devices don't even have a DeviceInfo */
case VIR_DOMAIN_DEVICE_LEASE:
case VIR_DOMAIN_DEVICE_GRAPHICS:
case VIR_DOMAIN_DEVICE_IOMMU:
case VIR_DOMAIN_DEVICE_LAST:
case VIR_DOMAIN_DEVICE_NONE:
/* should be 0 */
return pciFlags;
}
/* We can never get here, because all cases are covered in the
* switch, and they all return, but the compiler will still
* complain "control reaches end of non-void function" unless
* we add the following return.
*/
return 0;
}
typedef struct {
virDomainPCIConnectFlags virtioFlags;
virDomainPCIConnectFlags pcieFlags;
} qemuDomainFillDevicePCIConnectFlagsIterData;
/**
* qemuDomainFillDevicePCIConnectFlagsIterInit:
*
* Initialize the iterator data that is used when calling
* qemuDomainCalculateDevicePCIConnectFlags().
*/
static void
qemuDomainFillDevicePCIConnectFlagsIterInit(virDomainDefPtr def,
virQEMUCapsPtr qemuCaps,
qemuDomainFillDevicePCIConnectFlagsIterData *data)
{
if (qemuDomainMachineHasPCIeRoot(def)) {
data->pcieFlags = (VIR_PCI_CONNECT_TYPE_PCIE_DEVICE |
VIR_PCI_CONNECT_HOTPLUGGABLE);
} else {
data->pcieFlags = (VIR_PCI_CONNECT_TYPE_PCI_DEVICE |
VIR_PCI_CONNECT_HOTPLUGGABLE);
}
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_PCI_DISABLE_LEGACY)) {
data->virtioFlags = data->pcieFlags;
} else {
data->virtioFlags = (VIR_PCI_CONNECT_TYPE_PCI_DEVICE |
VIR_PCI_CONNECT_HOTPLUGGABLE);
}
}
/**
* qemuDomainFillDevicePCIConnectFlagsIter:
*
* @def: the entire DomainDef
* @dev: The device to be checked
* @info: virDomainDeviceInfo within the device
* @opaque: points to iterator data setup beforehand.
*
* Sets the pciConnectFlags for a single device's info. Has properly
* formatted arguments to be called by virDomainDeviceInfoIterate().
*
* Always returns 0 - there is no failure.
*/
static int
qemuDomainFillDevicePCIConnectFlagsIter(virDomainDefPtr def ATTRIBUTE_UNUSED,
virDomainDeviceDefPtr dev,
virDomainDeviceInfoPtr info,
void *opaque)
{
qemuDomainFillDevicePCIConnectFlagsIterData *data = opaque;
info->pciConnectFlags
= qemuDomainDeviceCalculatePCIConnectFlags(dev, data->pcieFlags,
data->virtioFlags);
return 0;
}
/**
* qemuDomainFillAllPCIConnectFlags:
*
* @def: the entire DomainDef
* @qemuCaps: as you'd expect
*
* Set the info->pciConnectFlags for all devices in the domain.
*
* Returns 0 on success or -1 on failure (the only possibility of
* failure would be some internal problem with
* virDomainDeviceInfoIterate())
*/
static int ATTRIBUTE_UNUSED
qemuDomainFillAllPCIConnectFlags(virDomainDefPtr def,
virQEMUCapsPtr qemuCaps)
{
qemuDomainFillDevicePCIConnectFlagsIterData data;
qemuDomainFillDevicePCIConnectFlagsIterInit(def, qemuCaps, &data);
return virDomainDeviceInfoIterate(def,
qemuDomainFillDevicePCIConnectFlagsIter,
&data);
}
/**
* qemuDomainFillDevicePCIConnectFlags:
*
* @def: the entire DomainDef
* @dev: The device to be checked
* @qemuCaps: as you'd expect
*
* Set the info->pciConnectFlags for a single device.
*
* No return value.
*/
static void ATTRIBUTE_UNUSED
qemuDomainFillDevicePCIConnectFlags(virDomainDefPtr def,
virDomainDeviceDefPtr dev,
virQEMUCapsPtr qemuCaps)
{
virDomainDeviceInfoPtr info = virDomainDeviceGetInfo(dev);
if (info) {
/* qemuDomainDeviceCalculatePCIConnectFlags() is called with
* the data setup in the ...IterData by ...IterInit() rather
* than setting the values directly here. It may seem like
* pointless posturing, but it's done this way to eliminate
* duplicated setup code while allowing more efficient
* operation when it's being done repeatedly with the device
* iterator (since qemuDomainFillAllPCIConnectFlags() only
* calls ...IterInit() once for all devices).
*/
qemuDomainFillDevicePCIConnectFlagsIterData data;
qemuDomainFillDevicePCIConnectFlagsIterInit(def, qemuCaps, &data);
info->pciConnectFlags
= qemuDomainDeviceCalculatePCIConnectFlags(dev, data.pcieFlags,
data.virtioFlags);
}
}
static int
qemuDomainPCIAddressReserveNextAddr(virDomainPCIAddressSetPtr addrs,
virDomainDeviceInfoPtr dev,