1 files changed, 44 insertions, 21 deletions

diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index eaf59134cb..6323c50837 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -273,6 +273,29 @@ static inline u8 ehci_encode_speed(enum usb_device_speed speed)
 	return QH_FULL_SPEED;
 }
 
+static void ehci_update_endpt2_dev_n_port(struct usb_device *dev,
+					  struct QH *qh)
+{
+	struct usb_device *ttdev;
+
+	if (dev->speed != USB_SPEED_LOW && dev->speed != USB_SPEED_FULL)
+		return;
+
+	/*
+	 * For full / low speed devices we need to get the devnum and portnr of
+	 * the tt, so of the first upstream usb-2 hub, there may be usb-1 hubs
+	 * in the tree before that one!
+	 */
+	ttdev = dev;
+	while (ttdev->parent && ttdev->parent->speed != USB_SPEED_HIGH)
+		ttdev = ttdev->parent;
+	if (!ttdev->parent)
+		return;
+
+	qh->qh_endpt2 |= cpu_to_hc32(QH_ENDPT2_PORTNUM(ttdev->portnr) |
+				     QH_ENDPT2_HUBADDR(ttdev->parent->devnum));
+}
+
 static int
 ehci_submit_async(struct usb_device *dev, unsigned long pipe, void *buffer,
 		   int length, struct devrequest *req)
@@ -390,10 +413,9 @@ ehci_submit_async(struct usb_device *dev, unsigned long pipe, void *buffer,
 		QH_ENDPT1_ENDPT(usb_pipeendpoint(pipe)) | QH_ENDPT1_I(0) |
 		QH_ENDPT1_DEVADDR(usb_pipedevice(pipe));
 	qh->qh_endpt1 = cpu_to_hc32(endpt);
-	endpt = QH_ENDPT2_MULT(1) | QH_ENDPT2_PORTNUM(dev->portnr) |
-		QH_ENDPT2_HUBADDR(dev->parent->devnum) |
-		QH_ENDPT2_UFCMASK(0) | QH_ENDPT2_UFSMASK(0);
+	endpt = QH_ENDPT2_MULT(1) | QH_ENDPT2_UFCMASK(0) | QH_ENDPT2_UFSMASK(0);
 	qh->qh_endpt2 = cpu_to_hc32(endpt);
+	ehci_update_endpt2_dev_n_port(dev, qh);
 	qh->qh_overlay.qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
 	qh->qh_overlay.qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
 
@@ -974,6 +996,7 @@ int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
 	 * Set up periodic list
 	 * Step 1: Parent QH for all periodic transfers.
 	 */
+	ehcic[index].periodic_schedules = 0;
 	periodic = &ehcic[index].periodic_queue;
 	memset(periodic, 0, sizeof(*periodic));
 	periodic->qh_link = cpu_to_hc32(QH_LINK_TERMINATE);
@@ -1132,8 +1155,6 @@ disable_periodic(struct ehci_ctrl *ctrl)
 	return 0;
 }
 
-static int periodic_schedules;
-
 struct int_queue *
 create_int_queue(struct usb_device *dev, unsigned long pipe, int queuesize,
 		 int elementsize, void *buffer)
@@ -1201,12 +1222,10 @@ create_int_queue(struct usb_device *dev, unsigned long pipe, int queuesize,
 			(1 << 0)); /* S-mask: microframe 0 */
 		if (dev->speed == USB_SPEED_LOW ||
 				dev->speed == USB_SPEED_FULL) {
-			debug("TT: port: %d, hub address: %d\n",
-				dev->portnr, dev->parent->devnum);
-			qh->qh_endpt2 |= cpu_to_hc32((dev->portnr << 23) |
-				(dev->parent->devnum << 16) |
-				(0x1c << 8)); /* C-mask: microframes 2-4 */
+			/* C-mask: microframes 2-4 */
+			qh->qh_endpt2 |= cpu_to_hc32((0x1c << 8));
 		}
+		ehci_update_endpt2_dev_n_port(dev, qh);
 
 		td->qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
 		td->qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
@@ -1258,7 +1277,7 @@ create_int_queue(struct usb_device *dev, unsigned long pipe, int queuesize,
 		debug("FATAL: periodic should never fail, but did");
 		goto fail3;
 	}
-	periodic_schedules++;
+	ctrl->periodic_schedules++;
 
 	debug("Exit create_int_queue\n");
 	return result;
@@ -1277,6 +1296,7 @@ fail1:
 void *poll_int_queue(struct usb_device *dev, struct int_queue *queue)
 {
 	struct QH *cur = queue->current;
+	struct qTD *cur_td;
 
 	/* depleted queue */
 	if (cur == NULL) {
@@ -1284,20 +1304,21 @@ void *poll_int_queue(struct usb_device *dev, struct int_queue *queue)
 		return NULL;
 	}
 	/* still active */
-	invalidate_dcache_range((uint32_t)cur,
-				ALIGN_END_ADDR(struct QH, cur, 1));
-	if (cur->qh_overlay.qt_token & cpu_to_hc32(0x80)) {
-		debug("Exit poll_int_queue with no completed intr transfer. "
-		      "token is %x\n", cur->qh_overlay.qt_token);
+	cur_td = &queue->tds[queue->current - queue->first];
+	invalidate_dcache_range((uint32_t)cur_td,
+				ALIGN_END_ADDR(struct qTD, cur_td, 1));
+	if (QT_TOKEN_GET_STATUS(hc32_to_cpu(cur_td->qt_token)) &
+			QT_TOKEN_STATUS_ACTIVE) {
+		debug("Exit poll_int_queue with no completed intr transfer. token is %x\n",
+		      hc32_to_cpu(cur_td->qt_token));
 		return NULL;
 	}
 	if (!(cur->qh_link & QH_LINK_TERMINATE))
 		queue->current++;
 	else
 		queue->current = NULL;
-	debug("Exit poll_int_queue with completed intr transfer. "
-	      "token is %x at %p (first at %p)\n", cur->qh_overlay.qt_token,
-	      &cur->qh_overlay.qt_token, queue->first);
+	debug("Exit poll_int_queue with completed intr transfer. token is %x at %p (first at %p)\n",
+	      hc32_to_cpu(cur_td->qt_token), cur, queue->first);
 	return cur->buffer;
 }
 
@@ -1313,7 +1334,7 @@ destroy_int_queue(struct usb_device *dev, struct int_queue *queue)
 		debug("FATAL: periodic should never fail, but did");
 		goto out;
 	}
-	periodic_schedules--;
+	ctrl->periodic_schedules--;
 
 	struct QH *cur = &ctrl->periodic_queue;
 	timeout = get_timer(0) + 500; /* abort after 500ms */
@@ -1322,6 +1343,8 @@ destroy_int_queue(struct usb_device *dev, struct int_queue *queue)
 		if (NEXT_QH(cur) == queue->first) {
 			debug("found candidate. removing from chain\n");
 			cur->qh_link = queue->last->qh_link;
+			flush_dcache_range((uint32_t)cur,
+					   ALIGN_END_ADDR(struct QH, cur, 1));
 			result = 0;
 			break;
 		}
@@ -1333,7 +1356,7 @@ destroy_int_queue(struct usb_device *dev, struct int_queue *queue)
 		}
 	}
 
-	if (periodic_schedules > 0) {
+	if (ctrl->periodic_schedules > 0) {
 		result = enable_periodic(ctrl);
 		if (result < 0)
 			debug("FATAL: periodic should never fail, but did");