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qemu: Add PCI-Express root to ARM virt machine

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Here we assume that if qemu supports generic PCI host controller,
it is a part of virt machine and can be used for adding PCI devices.

In qemu this is actually a PCIe bus, so we also declare multibus
capability so that 0'th bus is specified to qemu correctly as 'pcie.0'

Signed-off-by: Pavel Fedin <p.fedin@samsung.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This commit is contained in:
Pavel Fedin 2015-07-17 14:27:45 +03:00 committed by Michal Privoznik
parent 8a482abf75
commit e8d5517254
2 changed files with 39 additions and 18 deletions
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8
src/qemu/qemu_capabilities.c
View File

@ -2138,6 +2138,14 @@ bool virQEMUCapsHasPCIMultiBus(virQEMUCapsPtr qemuCaps,
return false;
}
if (ARCH_IS_ARM(def->os.arch)) {
/* If 'virt' supports PCI, it supports multibus.
* No extra conditions here for simplicity.
*/
if (STREQ(def->os.machine, "virt"))
return true;
}
return false;
}

49
src/qemu/qemu_domain.c
View File

@ -981,8 +981,10 @@ virDomainXMLNamespace virQEMUDriverDomainXMLNamespace = {
static int
qemuDomainDefPostParse(virDomainDefPtr def,
virCapsPtr caps,
void *opaque ATTRIBUTE_UNUSED)
void *opaque)
{
virQEMUDriverPtr driver = opaque;
virQEMUCapsPtr qemuCaps = NULL;
bool addDefaultUSB = true;
bool addImplicitSATA = false;
bool addPCIRoot = false;
@ -991,17 +993,24 @@ qemuDomainDefPostParse(virDomainDefPtr def,
bool addDefaultUSBKBD = false;
bool addDefaultUSBMouse = false;
bool addPanicDevice = false;
int ret = -1;
if (def->os.bootloader || def->os.bootloaderArgs) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("bootloader is not supported by QEMU"));
return -1;
return ret;
}
/* check for emulator and create a default one if needed */
if (!def->emulator &&
!(def->emulator = virDomainDefGetDefaultEmulator(def, caps)))
return -1;
return ret;
/* This condition is actually a (temporary) hack for test suite which
* does not create capabilities cache */
if (driver && driver->qemuCapsCache)
qemuCaps = virQEMUCapsCacheLookup(driver->qemuCapsCache, def->emulator);
/* Add implicit PCI root controller if the machine has one */
switch (def->os.arch) {
@ -1030,13 +1039,14 @@ qemuDomainDefPostParse(virDomainDefPtr def,
break;
case VIR_ARCH_ARMV7L:
addDefaultUSB = false;
addDefaultMemballoon = false;
break;
case VIR_ARCH_AARCH64:
addDefaultUSB = false;
addDefaultMemballoon = false;
break;
addDefaultUSB = false;
addDefaultMemballoon = false;
if (STREQ(def->os.machine, "virt") ||
STRPREFIX(def->os.machine, "virt-")) {
addPCIeRoot = virQEMUCapsGet(qemuCaps, QEMU_CAPS_OBJECT_GPEX);
}
break;
case VIR_ARCH_PPC64:
case VIR_ARCH_PPC64LE:
@ -1076,18 +1086,18 @@ qemuDomainDefPostParse(virDomainDefPtr def,
if (addDefaultUSB &&
virDomainDefMaybeAddController(
def, VIR_DOMAIN_CONTROLLER_TYPE_USB, 0, -1) < 0)
return -1;
goto cleanup;
if (addImplicitSATA &&
virDomainDefMaybeAddController(
def, VIR_DOMAIN_CONTROLLER_TYPE_SATA, 0, -1) < 0)
return -1;
goto cleanup;
if (addPCIRoot &&
virDomainDefMaybeAddController(
def, VIR_DOMAIN_CONTROLLER_TYPE_PCI, 0,
VIR_DOMAIN_CONTROLLER_MODEL_PCI_ROOT) < 0)
return -1;
goto cleanup;
/* When a machine has a pcie-root, make sure that there is always
* a dmi-to-pci-bridge controller added as bus 1, and a pci-bridge
@ -1103,14 +1113,14 @@ qemuDomainDefPostParse(virDomainDefPtr def,
virDomainDefMaybeAddController(
def, VIR_DOMAIN_CONTROLLER_TYPE_PCI, 2,
VIR_DOMAIN_CONTROLLER_MODEL_PCI_BRIDGE) < 0) {
return -1;
goto cleanup;
}
}
if (addDefaultMemballoon && !def->memballoon) {
virDomainMemballoonDefPtr memballoon;
if (VIR_ALLOC(memballoon) < 0)
return -1;
goto cleanup;
memballoon->model = VIR_DOMAIN_MEMBALLOON_MODEL_VIRTIO;
def->memballoon = memballoon;
@ -1121,24 +1131,27 @@ qemuDomainDefPostParse(virDomainDefPtr def,
virDomainDefMaybeAddInput(def,
VIR_DOMAIN_INPUT_TYPE_KBD,
VIR_DOMAIN_INPUT_BUS_USB) < 0)
return -1;
goto cleanup;
if (addDefaultUSBMouse &&
def->ngraphics > 0 &&
virDomainDefMaybeAddInput(def,
VIR_DOMAIN_INPUT_TYPE_MOUSE,
VIR_DOMAIN_INPUT_BUS_USB) < 0)
return -1;
goto cleanup;
if (addPanicDevice && !def->panic) {
virDomainPanicDefPtr panic;
if (VIR_ALLOC(panic) < 0)
return -1;
goto cleanup;
def->panic = panic;
}
return 0;
ret = 0;
cleanup:
virObjectUnref(qemuCaps);
return ret;
}
static const char *