diff options
| author | Gerd Hoffmann <kraxel@redhat.com> | 2012-05-11 10:02:53 +0200 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2012-06-07 10:02:20 +0200 |
| commit | 40141d12de84b67528354ec88075f66f5afd0cc7 (patch) | |
| tree | b2764bc4e8d2bf0ac9a02bb44b6534a51b16622c /hw | |
| parent | 9a16c5950d9ce38671a1ac259dcde3e707767922 (diff) | |
uhci: make bandwidth tunable
Add a property for the uhci bandwidth. Can be used to make uhci
emulation run faster than real hardware.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/usb/hcd-uhci.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/hw/usb/hcd-uhci.c b/hw/usb/hcd-uhci.c index 91bcc7e358..2e7c8f96a9 100644 --- a/hw/usb/hcd-uhci.c +++ b/hw/usb/hcd-uhci.c @@ -133,6 +133,7 @@ struct UHCIState { QEMUTimer *frame_timer; QEMUBH *bh; uint32_t frame_bytes; + uint32_t frame_bandwidth; UHCIPort ports[NB_PORTS]; /* Interrupts that should be raised at the end of the current frame. */ @@ -908,7 +909,7 @@ static void uhci_async_complete(USBPort *port, USBPacket *packet) uhci_async_free(async); } else { async->done = 1; - if (s->frame_bytes < 1280) { + if (s->frame_bytes < s->frame_bandwidth) { qemu_bh_schedule(s->bh); } } @@ -1007,7 +1008,7 @@ static void uhci_process_frame(UHCIState *s) qhdb_reset(&qhdb); for (cnt = FRAME_MAX_LOOPS; is_valid(link) && cnt; cnt--) { - if (s->frame_bytes >= 1280) { + if (s->frame_bytes >= s->frame_bandwidth) { /* We've reached the usb 1.1 bandwidth, which is 1280 bytes/frame, stop processing */ trace_usb_uhci_frame_stop_bandwidth(); @@ -1258,6 +1259,7 @@ static int usb_uhci_exit(PCIDevice *dev) static Property uhci_properties[] = { DEFINE_PROP_STRING("masterbus", UHCIState, masterbus), DEFINE_PROP_UINT32("firstport", UHCIState, firstport, 0), + DEFINE_PROP_UINT32("bandwidth", UHCIState, frame_bandwidth, 1280), DEFINE_PROP_END_OF_LIST(), }; |