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vfio/pci: Cache vendor and device ID 

Simplify access to commonly referenced PCI vendor and device ID by
caching it on the VFIOPCIDevice struct.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Alex Williamson 2015-09-23 13:04:49 -06:00
parent c9c5000991
commit ff635e3775
3 changed files with 11 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
hw/vfio/pci-quirks.c
View File

@ -19,12 +19,8 @@
/* Use uin32_t for vendor & device so PCI_ANY_ID expands and cannot match hw */
static bool vfio_pci_is(VFIOPCIDevice *vdev, uint32_t vendor, uint32_t device)
{
PCIDevice *pdev = &vdev->pdev;
return (vendor == PCI_ANY_ID ||
vendor == pci_get_word(pdev->config + PCI_VENDOR_ID)) &&
(device == PCI_ANY_ID ||
device == pci_get_word(pdev->config + PCI_DEVICE_ID));
return (vendor == PCI_ANY_ID || vendor == vdev->vendor_id) &&
(device == PCI_ANY_ID || device == vdev->device_id);
}
static bool vfio_is_vga(VFIOPCIDevice *vdev)
@ -1178,15 +1174,9 @@ out:
void vfio_setup_resetfn_quirk(VFIOPCIDevice *vdev)
{
PCIDevice *pdev = &vdev->pdev;
uint16_t vendor, device;
vendor = pci_get_word(pdev->config + PCI_VENDOR_ID);
device = pci_get_word(pdev->config + PCI_DEVICE_ID);
switch (vendor) {
switch (vdev->vendor_id) {
case 0x1002:
switch (device) {
switch (vdev->device_id) {
/* Bonaire */
case 0x6649: /* Bonaire [FirePro W5100] */
case 0x6650:

10
hw/vfio/pci.c
View File

@ -1221,17 +1221,14 @@ static int vfio_msix_early_setup(VFIOPCIDevice *vdev)
* specific quirk if the device is known or we have a broken configuration.
*/
if (msix->pba_offset >= vdev->bars[msix->pba_bar].region.size) {
PCIDevice *pdev = &vdev->pdev;
uint16_t vendor = pci_get_word(pdev->config + PCI_VENDOR_ID);
uint16_t device = pci_get_word(pdev->config + PCI_DEVICE_ID);
/*
* Chelsio T5 Virtual Function devices are encoded as 0x58xx for T5
* adapters. The T5 hardware returns an incorrect value of 0x8000 for
* the VF PBA offset while the BAR itself is only 8k. The correct value
* is 0x1000, so we hard code that here.
*/
if (vendor == PCI_VENDOR_ID_CHELSIO && (device & 0xff00) == 0x5800) {
if (vdev->vendor_id == PCI_VENDOR_ID_CHELSIO &&
(vdev->device_id & 0xff00) == 0x5800) {
msix->pba_offset = 0x1000;
} else {
error_report("vfio: Hardware reports invalid configuration, "
@ -2407,6 +2404,9 @@ static int vfio_initfn(PCIDevice *pdev)
/* QEMU can choose to expose the ROM or not */
memset(vdev->emulated_config_bits + PCI_ROM_ADDRESS, 0xff, 4);
vdev->vendor_id = pci_get_word(pdev->config + PCI_VENDOR_ID);
vdev->device_id = pci_get_word(pdev->config + PCI_DEVICE_ID);
/* QEMU can change multi-function devices to single function, or reverse */
vdev->emulated_config_bits[PCI_HEADER_TYPE] =
PCI_HEADER_TYPE_MULTI_FUNCTION;

2
hw/vfio/pci.h
View File

@ -116,6 +116,8 @@ typedef struct VFIOPCIDevice {
EventNotifier err_notifier;
EventNotifier req_notifier;
int (*resetfn)(struct VFIOPCIDevice *);
uint16_t vendor_id;
uint16_t device_id;
uint32_t features;
#define VFIO_FEATURE_ENABLE_VGA_BIT 0
#define VFIO_FEATURE_ENABLE_VGA (1 << VFIO_FEATURE_ENABLE_VGA_BIT)