USB: Add USB 3.0 roothub support to USB core.
Add USB 3.0 root hub descriptors. This is a kludge because I reused the old
USB 2.0 descriptors, instead of using the new USB 3.0 hub descriptors with
endpoint companion descriptors and other descriptors. I did this because I
wasn't ready to add USB 3.0 hub changes to khubd. For now, a USB 3.0 roothub
looks like a USB 2.0 roothub, with a higher speed.
USB 3.0 hubs have no transaction translator (TT).
Make USB core debugging handle super speed ports.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 120bb56..823744d 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -128,6 +128,27 @@
#define KERNEL_REL ((LINUX_VERSION_CODE >> 16) & 0x0ff)
#define KERNEL_VER ((LINUX_VERSION_CODE >> 8) & 0x0ff)
+/* usb 3.0 root hub device descriptor */
+static const u8 usb3_rh_dev_descriptor[18] = {
+ 0x12, /* __u8 bLength; */
+ 0x01, /* __u8 bDescriptorType; Device */
+ 0x00, 0x03, /* __le16 bcdUSB; v3.0 */
+
+ 0x09, /* __u8 bDeviceClass; HUB_CLASSCODE */
+ 0x00, /* __u8 bDeviceSubClass; */
+ 0x03, /* __u8 bDeviceProtocol; USB 3.0 hub */
+ 0x09, /* __u8 bMaxPacketSize0; 2^9 = 512 Bytes */
+
+ 0x6b, 0x1d, /* __le16 idVendor; Linux Foundation */
+ 0x02, 0x00, /* __le16 idProduct; device 0x0002 */
+ KERNEL_VER, KERNEL_REL, /* __le16 bcdDevice */
+
+ 0x03, /* __u8 iManufacturer; */
+ 0x02, /* __u8 iProduct; */
+ 0x01, /* __u8 iSerialNumber; */
+ 0x01 /* __u8 bNumConfigurations; */
+};
+
/* usb 2.0 root hub device descriptor */
static const u8 usb2_rh_dev_descriptor [18] = {
0x12, /* __u8 bLength; */
@@ -273,6 +294,47 @@
0x0c /* __u8 ep_bInterval; (256ms -- usb 2.0 spec) */
};
+static const u8 ss_rh_config_descriptor[] = {
+ /* one configuration */
+ 0x09, /* __u8 bLength; */
+ 0x02, /* __u8 bDescriptorType; Configuration */
+ 0x19, 0x00, /* __le16 wTotalLength; FIXME */
+ 0x01, /* __u8 bNumInterfaces; (1) */
+ 0x01, /* __u8 bConfigurationValue; */
+ 0x00, /* __u8 iConfiguration; */
+ 0xc0, /* __u8 bmAttributes;
+ Bit 7: must be set,
+ 6: Self-powered,
+ 5: Remote wakeup,
+ 4..0: resvd */
+ 0x00, /* __u8 MaxPower; */
+
+ /* one interface */
+ 0x09, /* __u8 if_bLength; */
+ 0x04, /* __u8 if_bDescriptorType; Interface */
+ 0x00, /* __u8 if_bInterfaceNumber; */
+ 0x00, /* __u8 if_bAlternateSetting; */
+ 0x01, /* __u8 if_bNumEndpoints; */
+ 0x09, /* __u8 if_bInterfaceClass; HUB_CLASSCODE */
+ 0x00, /* __u8 if_bInterfaceSubClass; */
+ 0x00, /* __u8 if_bInterfaceProtocol; */
+ 0x00, /* __u8 if_iInterface; */
+
+ /* one endpoint (status change endpoint) */
+ 0x07, /* __u8 ep_bLength; */
+ 0x05, /* __u8 ep_bDescriptorType; Endpoint */
+ 0x81, /* __u8 ep_bEndpointAddress; IN Endpoint 1 */
+ 0x03, /* __u8 ep_bmAttributes; Interrupt */
+ /* __le16 ep_wMaxPacketSize; 1 + (MAX_ROOT_PORTS / 8)
+ * see hub.c:hub_configure() for details. */
+ (USB_MAXCHILDREN + 1 + 7) / 8, 0x00,
+ 0x0c /* __u8 ep_bInterval; (256ms -- usb 2.0 spec) */
+ /*
+ * All 3.0 hubs should have an endpoint companion descriptor,
+ * but we're ignoring that for now. FIXME?
+ */
+};
+
/*-------------------------------------------------------------------------*/
/*
@@ -426,7 +488,9 @@
case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
switch (wValue & 0xff00) {
case USB_DT_DEVICE << 8:
- if (hcd->driver->flags & HCD_USB2)
+ if (hcd->driver->flags & HCD_USB3)
+ bufp = usb3_rh_dev_descriptor;
+ else if (hcd->driver->flags & HCD_USB2)
bufp = usb2_rh_dev_descriptor;
else if (hcd->driver->flags & HCD_USB11)
bufp = usb11_rh_dev_descriptor;
@@ -437,7 +501,10 @@
patch_protocol = 1;
break;
case USB_DT_CONFIG << 8:
- if (hcd->driver->flags & HCD_USB2) {
+ if (hcd->driver->flags & HCD_USB3) {
+ bufp = ss_rh_config_descriptor;
+ len = sizeof ss_rh_config_descriptor;
+ } else if (hcd->driver->flags & HCD_USB2) {
bufp = hs_rh_config_descriptor;
len = sizeof hs_rh_config_descriptor;
} else {