[Qemu-devel] [PATCH 0/1] qemu:pci-assign: try to pci-assign.c

[Tiejun Chen]

As you know I'm working on supporting IGD passthrough.

Here we need load VGABIOS to work out IGD case. Obviously something may
be duplicated to kvm codes, we should unify some codes but looks its not
easy to finish that in short time. So as Michael suggestion, at least
we'd better split assigned_dev_load_option_rom to reuse on both kvm
and xen.

I don't finish all IGD stuff patches but here I'd like to post
some related codes to show how to use assigned_dev_load_option_rom()
lately.

+static int get_vgabios(XenPCIPassthroughState *s, void *ptr,
+                       XenHostPCIDevice *dev)
+{
+    int size = 0;
+
+    size = dev_load_option_rom(&s->dev, OBJECT(dev), ptr, dev->domain,
+                               dev->bus, dev->dev, dev->func);
+
+    return size;
+}
+
+int xen_pt_setup_vga(XenPCIPassthroughState *s, XenHostPCIDevice *dev)
+{
+    void *bios = NULL;
+    int bios_size = 0;
+    int rc = 0;
+
+    if (!is_vga_passthrough(dev)) {
+        return rc;
+    }
+
+    bios_size = get_vgabios(s, bios, dev);
+    if (!bios || !bios_size) {
+        XEN_PT_ERR(NULL, "VGA: getting VBIOS!\n");
+        rc = -1;
+        goto out;
+    }
...

----------------------------------------------------------------
Tiejun Chen (1):
      hw/pci-assign: split pci-assign.c

 hw/i386/kvm/pci-assign.c    | 170 
+++--------------------------------------------------------------------------------------------------------------------------------------
 include/hw/pci/pci_assign.h | 204 
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 207 insertions(+), 167 deletions(-)
 create mode 100644 include/hw/pci/pci_assign.h

Thanks
Tiejun