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authorGerd Hoffmann <kraxel@redhat.com>2013-05-06 13:12:16 +0200
committerGerd Hoffmann <kraxel@redhat.com>2013-05-07 11:34:02 +0200
commitc3268cc1135f41264cd26bcb269b3414d3c11453 (patch)
treea1b19fe74bcacccb4aecab0cf3f6a491c7a076e0
parent95efb20c714800de7eaf991f19dab6e7a29d5364 (diff)
downloadqemu-arm-c3268cc1135f41264cd26bcb269b3414d3c11453.tar.gz
usb-host: add usb_host_full_speed_compat
Alloes to pass through usb2 devices on usb1 host controllers if possible. Brings the libusb implementation to feature-parity with the linux usbfs code, so the usb-host implementation in 1.5 (libusb) doesn't regress compared to 1.4 (usbfs). Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
-rw-r--r--hw/usb/host-libusb.c40
1 files changed, 37 insertions, 3 deletions
diff --git a/hw/usb/host-libusb.c b/hw/usb/host-libusb.c
index ee67c4c23e..f3de4591fd 100644
--- a/hw/usb/host-libusb.c
+++ b/hw/usb/host-libusb.c
@@ -667,6 +667,42 @@ static void usb_host_iso_data_out(USBHostDevice *s, USBPacket *p)
/* ------------------------------------------------------------------------ */
+static bool usb_host_full_speed_compat(USBHostDevice *s)
+{
+ struct libusb_config_descriptor *conf;
+ const struct libusb_interface_descriptor *intf;
+ const struct libusb_endpoint_descriptor *endp;
+ uint8_t type;
+ int rc, c, i, a, e;
+
+ for (c = 0;; c++) {
+ rc = libusb_get_config_descriptor(s->dev, c, &conf);
+ if (rc != 0) {
+ break;
+ }
+ for (i = 0; i < conf->bNumInterfaces; i++) {
+ for (a = 0; a < conf->interface[i].num_altsetting; a++) {
+ intf = &conf->interface[i].altsetting[a];
+ for (e = 0; e < intf->bNumEndpoints; e++) {
+ endp = &intf->endpoint[e];
+ type = endp->bmAttributes & 0x3;
+ switch (type) {
+ case 0x01: /* ISO */
+ return false;
+ case 0x03: /* INTERRUPT */
+ if (endp->wMaxPacketSize > 64) {
+ return false;
+ }
+ break;
+ }
+ }
+ }
+ }
+ libusb_free_config_descriptor(conf);
+ }
+ return true;
+}
+
static void usb_host_ep_update(USBHostDevice *s)
{
static const char *tname[] = {
@@ -758,11 +794,9 @@ static int usb_host_open(USBHostDevice *s, libusb_device *dev)
udev->speed = speed_map[libusb_get_device_speed(dev)];
udev->speedmask = (1 << udev->speed);
-#if 0
- if (udev->speed == USB_SPEED_HIGH && usb_linux_full_speed_compat(dev)) {
+ if (udev->speed == USB_SPEED_HIGH && usb_host_full_speed_compat(s)) {
udev->speedmask |= USB_SPEED_MASK_FULL;
}
-#endif
if (s->ddesc.iProduct) {
libusb_get_string_descriptor_ascii(s->dh, s->ddesc.iProduct,