From: Simon Glass <sjg@chromium.org>
Date: Mon, 7 Feb 2011 22:42:16 +0000 (-0800)
Subject: Fix EHCI usb submit timeout and unify with OHCI
X-Git-Tag: v2011.03-rc2~53
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=96820a35873b4c005f732432c6a168decc9d22b9;p=oweals%2Fu-boot.git

Fix EHCI usb submit timeout and unify with OHCI

Changed both to use a common timeout for URB submission, since they were using
different values and EHCI's was too short.

Also fixed EHCI to actually check if urb submission succeeded, rather than
silently continuing into the weeds.

Change-Id: I7f71499ffaa05187d8e5618db2419e1606007b82

Signed-off-by: Simon Glass <sjg@chromium.org>
---

diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 6eb38a4131..70c02c9deb 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -319,6 +319,7 @@ ehci_submit_async(struct usb_device *dev, unsigned long pipe, void *buffer,
 	uint32_t endpt, token, usbsts;
 	uint32_t c, toggle;
 	uint32_t cmd;
+	int timeout;
 	int ret = 0;
 
 	debug("dev=%p, pipe=%lx, buffer=%p, length=%d, req=%p\n", dev, pipe,
@@ -447,6 +448,7 @@ ehci_submit_async(struct usb_device *dev, unsigned long pipe, void *buffer,
 	/* Wait for TDs to be processed. */
 	ts = get_timer(0);
 	vtd = td;
+	timeout = USB_TIMEOUT_MS(pipe);
 	do {
 		/* Invalidate dcache */
 		ehci_invalidate_dcache(&qh_list);
@@ -454,7 +456,13 @@ ehci_submit_async(struct usb_device *dev, unsigned long pipe, void *buffer,
 		if (!(token & 0x80))
 			break;
 		WATCHDOG_RESET();
-	} while (get_timer(ts) < CONFIG_SYS_HZ);
+	} while (get_timer(ts) < timeout);
+
+	/* Check that the TD processing happened */
+	if (token & 0x80) {
+		printf("EHCI timed out on TD - token=%#x\n", token);
+		goto fail;
+	}
 
 	/* Disable async schedule. */
 	cmd = ehci_readl(&hcor->or_usbcmd);
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index d246978962..bc8bb2061b 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -1524,12 +1524,7 @@ int submit_common_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 	/* ohci_dump_status(&gohci); */
 #endif
 
-	/* allow more time for a BULK device to react - some are slow */
-#define BULK_TO	 5000	/* timeout in milliseconds */
-	if (usb_pipebulk(pipe))
-		timeout = BULK_TO;
-	else
-		timeout = 1000;
+	timeout = USB_TIMEOUT_MS(pipe);
 
 	/* wait for it to complete */
 	for (;;) {
diff --git a/include/usb.h b/include/usb.h
index afd65e3180..98576b73a4 100644
--- a/include/usb.h
+++ b/include/usb.h
@@ -42,6 +42,12 @@
 
 #define USB_CNTL_TIMEOUT 100 /* 100ms timeout */
 
+/*
+ * This is the timeout to allow for submitting an urb in ms. We allow more
+ * time for a BULK device to react - some are slow.
+ */
+#define USB_TIMEOUT_MS(pipe) (usb_pipebulk(pipe) ? 5000 : 100)
+
 /* device request (setup) */
 struct devrequest {
 	unsigned char	requesttype;