WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

[Xen-devel] [PATCH 4/7] xen: Utilize the restore_msi_irqs hook.

to make a hypercall to restore the vectors in the MSI/MSI-X
configuration space.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
---
 arch/x86/pci/xen.c              |   12 ++++++++++++
 include/xen/interface/physdev.h |    7 +++++++
 2 files changed, 19 insertions(+), 0 deletions(-)

diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c
index f567965..f140999 100644
--- a/arch/x86/pci/xen.c
+++ b/arch/x86/pci/xen.c
@@ -241,6 +241,17 @@ static int xen_initdom_setup_msi_irqs(struct pci_dev *dev, 
int nvec, int type)
 out:
        return ret;
 }
+
+static void xen_initdom_restore_msi_irqs(struct pci_dev *dev, int irq)
+{
+       int ret = 0;
+       struct physdev_restore_msi restore;
+
+       restore.bus = dev->bus->number;
+       restore.devfn = dev->devfn;
+       ret = HYPERVISOR_physdev_op(PHYSDEVOP_restore_msi, &restore);
+       WARN(ret && ret != -ENOSYS, "restore_msi -> %d\n", ret);
+}
 #endif
 #endif
 
@@ -458,6 +469,7 @@ static int __init pci_xen_initial_domain(void)
 #ifdef CONFIG_PCI_MSI
        x86_msi.setup_msi_irqs = xen_initdom_setup_msi_irqs;
        x86_msi.teardown_msi_irq = xen_teardown_msi_irq;
+       x86_msi.restore_msi_irqs = xen_initdom_restore_msi_irqs;
 #endif
        xen_setup_acpi_sci();
        __acpi_register_gsi = acpi_register_gsi_xen;
diff --git a/include/xen/interface/physdev.h b/include/xen/interface/physdev.h
index 534cac8..44aefa9 100644
--- a/include/xen/interface/physdev.h
+++ b/include/xen/interface/physdev.h
@@ -144,6 +144,13 @@ struct physdev_manage_pci {
        uint8_t devfn;
 };
 
+#define PHYSDEVOP_restore_msi            19
+struct physdev_restore_msi {
+       /* IN */
+       uint8_t bus;
+       uint8_t devfn;
+};
+
 #define PHYSDEVOP_manage_pci_add_ext   20
 struct physdev_manage_pci_ext {
        /* IN */
-- 
1.7.4.1


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel