From patchwork Fri Nov 19 23:20:56 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [v3,8/9] device-assignment: Make use of config_map Date: Fri, 19 Nov 2010 13:20:56 -0000 From: Alex Williamson X-Patchwork-Id: 72330 Message-Id: <20101119232045.22162.31257.stgit@s20.home> To: kvm@vger.kernel.org, mst@redhat.com Cc: chrisw@redhat.com, alex.williamson@redhat.com, qemu-devel@nongnu.org We can figure out the capability being touched much more quickly and efficiently with the config_map. Use it. Signed-off-by: Alex Williamson --- hw/device-assignment.c | 32 +++++++++++++++++++------------- 1 files changed, 19 insertions(+), 13 deletions(-) diff --git a/hw/device-assignment.c b/hw/device-assignment.c index 970ffa1..832c236 100644 --- a/hw/device-assignment.c +++ b/hw/device-assignment.c @@ -1254,28 +1254,34 @@ static void assigned_dev_update_msix(PCIDevice *pci_dev, unsigned int ctrl_pos) static void assigned_device_pci_cap_write_config(PCIDevice *pci_dev, uint32_t address, uint32_t val, int len) { - AssignedDevice *assigned_dev = container_of(pci_dev, AssignedDevice, dev); + uint8_t cap_id = pci_dev->config_map[address]; pci_default_write_config(pci_dev, address, val, len); + switch (cap_id) { #ifdef KVM_CAP_IRQ_ROUTING + case PCI_CAP_ID_MSI: #ifdef KVM_CAP_DEVICE_MSI - if (assigned_dev->cap.available & ASSIGNED_DEVICE_CAP_MSI) { - int pos = pci_find_capability(pci_dev, PCI_CAP_ID_MSI); - if (ranges_overlap(address, len, pos + PCI_MSI_FLAGS, 1)) { - assigned_dev_update_msi(pci_dev, pos + PCI_MSI_FLAGS); + { + uint8_t cap = pci_find_capability(pci_dev, cap_id); + if (ranges_overlap(address - cap, len, PCI_MSI_FLAGS, 1)) { + assigned_dev_update_msi(pci_dev, cap + PCI_MSI_FLAGS); + } } - } #endif + break; + + case PCI_CAP_ID_MSIX: #ifdef KVM_CAP_DEVICE_MSIX - if (assigned_dev->cap.available & ASSIGNED_DEVICE_CAP_MSIX) { - int pos = pci_find_capability(pci_dev, PCI_CAP_ID_MSIX); - if (ranges_overlap(address, len, pos + PCI_MSIX_FLAGS + 1, 1)) { - assigned_dev_update_msix(pci_dev, pos + PCI_MSIX_FLAGS); - } - } + { + uint8_t cap = pci_find_capability(pci_dev, cap_id); + if (ranges_overlap(address - cap, len, PCI_MSIX_FLAGS + 1, 1)) { + assigned_dev_update_msix(pci_dev, cap + PCI_MSIX_FLAGS); + } + } #endif + break; #endif - return; + } } static int assigned_device_pci_cap_init(PCIDevice *pci_dev)