[PATCH v1] usb: Add read support for HCIVERSION register to XHCI

[Cameron Esfahani]

macOS will read HCIVERSION separate from CAPLENGTH.  Add a distinct
handler for that register.

Signed-off-by: Cameron Esfahani <address@hidden>
---
 hw/usb/hcd-xhci.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c
index b330e36fe6..061f8438de 100644
--- a/hw/usb/hcd-xhci.c
+++ b/hw/usb/hcd-xhci.c
@@ -2739,6 +2739,9 @@ static uint64_t xhci_cap_read(void *ptr, hwaddr reg, 
unsigned size)
     case 0x00: /* HCIVERSION, CAPLENGTH */
         ret = 0x01000000 | LEN_CAP;
         break;
+    case 0x02: /* HCIVERSION */
+        ret = 0x0100;
+        break;
     case 0x04: /* HCSPARAMS 1 */
         ret = ((xhci->numports_2+xhci->numports_3)<<24)
             | (xhci->numintrs<<8) | xhci->numslots;
-- 
2.24.0