[SeaBIOS] [PATCH 2/2] usb-xhci: use hub portmap

[Gerd Hoffmann]

xhci controllers have two virtual ports per (usb3 capable) physical
port, one for usb2 and one for usb3 devices.  Add a hub portmap callback
to map the virtual ports to physical ports.  For now assume we simply
have the same number of usb2 and usb3 ports.

Signed-off-by: Gerd Hoffmann <kraxel at redhat.com>
---
 src/hw/usb-xhci.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/hw/usb-xhci.c b/src/hw/usb-xhci.c
index 69954b9d8d..803822aece 100644
--- a/src/hw/usb-xhci.c
+++ b/src/hw/usb-xhci.c
@@ -374,6 +374,16 @@ xhci_hub_reset(struct usbhub_s *hub, u32 port)
     return rc;
 }
 
+static int
+xhci_hub_portmap(struct usbhub_s *hub, u32 port)
+{
+    struct usb_xhci_s *xhci = container_of(hub->cntl, struct usb_xhci_s, usb);
+
+    // we don't parse the extended capabilities, so we take a shortcut
+    // here and assumes we have the same number of usb2 and usb3 ports
+    return port % (xhci->ports/2) + 1;
+}
+
 static void
 xhci_hub_disconnect(struct usbhub_s *hub, u32 port)
 {
@@ -383,6 +393,7 @@ xhci_hub_disconnect(struct usbhub_s *hub, u32 port)
 static struct usbhub_op_s xhci_hub_ops = {
     .detect = xhci_hub_detect,
     .reset = xhci_hub_reset,
+    .portmap = xhci_hub_portmap,
     .disconnect = xhci_hub_disconnect,
 };
 
-- 
2.9.3