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pcie: Add endpoint capability initialization wrapper 

Fix the awkward API of mangling the caller specified PCIe type and
just provide an interface to initialize an endpoint device.  This
will pick either a regular endpoint or integrated endpoint based on
the bus and return pcie_cap_init to doing exactly what is asked.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Alex Williamson 2013-03-19 12:11:24 -06:00 committed by Michael S. Tsirkin
parent a5519b42cf
commit 6214e73cc5
3 changed files with 18 additions and 14 deletions
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29
hw/pci/pcie.c
View File

@ -48,19 +48,6 @@ int pcie_cap_init(PCIDevice *dev, uint8_t offset, uint8_t type, uint8_t port)
assert(pci_is_express(dev));
/*
* Mangle type to convert Endpoints to Root Complex Integrated Endpoints.
* Windows will report Code 10 (device cannot start) for regular Endpoints
* on the Root Complex.
*/
if (pci_bus_is_express(dev->bus) && pci_bus_is_root(dev->bus)) {
switch (type) {
case PCI_EXP_TYPE_ENDPOINT:
type = PCI_EXP_TYPE_RC_END;
break;
}
}
pos = pci_add_capability(dev, PCI_CAP_ID_EXP, offset,
PCI_EXP_VER2_SIZEOF);
if (pos < 0) {
@ -100,6 +87,22 @@ int pcie_cap_init(PCIDevice *dev, uint8_t offset, uint8_t type, uint8_t port)
return pos;
}
int pcie_endpoint_cap_init(PCIDevice *dev, uint8_t offset)
{
uint8_t type = PCI_EXP_TYPE_ENDPOINT;
/*
* Windows guests will report Code 10, device cannot start, if
* a regular Endpoint type is exposed on a root complex. These
* should instead be Root Complex Integrated Endpoints.
*/
if (pci_bus_is_express(dev->bus) && pci_bus_is_root(dev->bus)) {
type = PCI_EXP_TYPE_RC_END;
}
return pcie_cap_init(dev, offset, type, 0);
}
void pcie_cap_exit(PCIDevice *dev)
{
pci_del_capability(dev, PCI_CAP_ID_EXP, PCI_EXP_VER2_SIZEOF);

1
hw/pci/pcie.h
View File

@ -95,6 +95,7 @@ struct PCIExpressDevice {
/* PCI express capability helper functions */
int pcie_cap_init(PCIDevice *dev, uint8_t offset, uint8_t type, uint8_t port);
int pcie_endpoint_cap_init(PCIDevice *dev, uint8_t offset);
void pcie_cap_exit(PCIDevice *dev);
uint8_t pcie_cap_get_type(const PCIDevice *dev);
void pcie_cap_flags_set_vector(PCIDevice *dev, uint8_t vector);

2
hw/usb/hcd-xhci.c
View File

@ -3332,7 +3332,7 @@ static int usb_xhci_initfn(struct PCIDevice *dev)
PCI_BASE_ADDRESS_SPACE_MEMORY|PCI_BASE_ADDRESS_MEM_TYPE_64,
&xhci->mem);
ret = pcie_cap_init(&xhci->pci_dev, 0xa0, PCI_EXP_TYPE_ENDPOINT, 0);
ret = pcie_endpoint_cap_init(&xhci->pci_dev, 0xa0);
assert(ret >= 0);
if (xhci->flags & (1 << XHCI_FLAG_USE_MSI)) {