/*
- *
* Most of this source has been derived from the Linux USB
* project:
* (C) Copyright Linus Torvalds 1999
* Adapted for U-Boot:
* (C) Copyright 2001 Denis Peter, MPL AG Switzerland
*
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- *
+ * SPDX-License-Identifier: GPL-2.0+
*/
/****************************************************************************
#include <asm/4xx_pci.h>
#endif
-#ifdef DEBUG
-#define USB_DEBUG 1
-#define USB_HUB_DEBUG 1
-#else
-#define USB_DEBUG 0
-#define USB_HUB_DEBUG 0
-#endif
-
-#define USB_PRINTF(fmt, args...) debug_cond(USB_DEBUG, fmt, ##args)
-#define USB_HUB_PRINTF(fmt, args...) debug_cond(USB_HUB_DEBUG, fmt, ##args)
-
#define USB_BUFSIZ 512
static struct usb_hub_device hub_dev[USB_MAX_HUB];
static int usb_hub_index;
+__weak void usb_hub_reset_devices(int port)
+{
+ return;
+}
static int usb_get_hub_descriptor(struct usb_device *dev, void *data, int size)
{
unsigned pgood_delay = hub->desc.bPwrOn2PwrGood * 2;
dev = hub->pusb_dev;
- /* Enable power to the ports */
- USB_HUB_PRINTF("enabling power on all ports\n");
+
+ debug("enabling power on all ports\n");
for (i = 0; i < dev->maxchild; i++) {
usb_set_port_feature(dev, i + 1, USB_PORT_FEAT_POWER);
- USB_HUB_PRINTF("port %d returns %lX\n", i + 1, dev->status);
+ debug("port %d returns %lX\n", i + 1, dev->status);
}
- /* Wait at least 100 msec for power to become stable */
- mdelay(max(pgood_delay, (unsigned)100));
+ /*
+ * Wait for power to become stable,
+ * plus spec-defined max time for device to connect
+ */
+ mdelay(pgood_delay + 1000);
}
void usb_hub_reset(void)
static inline char *portspeed(int portstatus)
{
- if (portstatus & (1 << USB_PORT_FEAT_HIGHSPEED))
- return "480 Mb/s";
- else if (portstatus & (1 << USB_PORT_FEAT_LOWSPEED))
- return "1.5 Mb/s";
- else
- return "12 Mb/s";
+ char *speed_str;
+
+ switch (portstatus & USB_PORT_STAT_SPEED_MASK) {
+ case USB_PORT_STAT_SUPER_SPEED:
+ speed_str = "5 Gb/s";
+ break;
+ case USB_PORT_STAT_HIGH_SPEED:
+ speed_str = "480 Mb/s";
+ break;
+ case USB_PORT_STAT_LOW_SPEED:
+ speed_str = "1.5 Mb/s";
+ break;
+ default:
+ speed_str = "12 Mb/s";
+ break;
+ }
+
+ return speed_str;
}
int hub_port_reset(struct usb_device *dev, int port,
ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1);
unsigned short portstatus, portchange;
- USB_HUB_PRINTF("hub_port_reset: resetting port %d...\n", port);
+ debug("hub_port_reset: resetting port %d...\n", port);
for (tries = 0; tries < MAX_TRIES; tries++) {
usb_set_port_feature(dev, port + 1, USB_PORT_FEAT_RESET);
mdelay(200);
if (usb_get_port_status(dev, port + 1, portsts) < 0) {
- USB_HUB_PRINTF("get_port_status failed status %lX\n",
- dev->status);
+ debug("get_port_status failed status %lX\n",
+ dev->status);
return -1;
}
portstatus = le16_to_cpu(portsts->wPortStatus);
portchange = le16_to_cpu(portsts->wPortChange);
- USB_HUB_PRINTF("portstatus %x, change %x, %s\n",
- portstatus, portchange,
- portspeed(portstatus));
-
- USB_HUB_PRINTF("STAT_C_CONNECTION = %d STAT_CONNECTION = %d" \
- " USB_PORT_STAT_ENABLE %d\n",
- (portchange & USB_PORT_STAT_C_CONNECTION) ? 1 : 0,
- (portstatus & USB_PORT_STAT_CONNECTION) ? 1 : 0,
- (portstatus & USB_PORT_STAT_ENABLE) ? 1 : 0);
-
- if ((portchange & USB_PORT_STAT_C_CONNECTION) ||
- !(portstatus & USB_PORT_STAT_CONNECTION))
- return -1;
+ debug("portstatus %x, change %x, %s\n", portstatus, portchange,
+ portspeed(portstatus));
+
+ debug("STAT_C_CONNECTION = %d STAT_CONNECTION = %d" \
+ " USB_PORT_STAT_ENABLE %d\n",
+ (portchange & USB_PORT_STAT_C_CONNECTION) ? 1 : 0,
+ (portstatus & USB_PORT_STAT_CONNECTION) ? 1 : 0,
+ (portstatus & USB_PORT_STAT_ENABLE) ? 1 : 0);
+
+ /*
+ * Perhaps we should check for the following here:
+ * - C_CONNECTION hasn't been set.
+ * - CONNECTION is still set.
+ *
+ * Doing so would ensure that the device is still connected
+ * to the bus, and hasn't been unplugged or replaced while the
+ * USB bus reset was going on.
+ *
+ * However, if we do that, then (at least) a San Disk Ultra
+ * USB 3.0 16GB device fails to reset on (at least) an NVIDIA
+ * Tegra Jetson TK1 board. For some reason, the device appears
+ * to briefly drop off the bus when this second bus reset is
+ * executed, yet if we retry this loop, it'll eventually come
+ * back after another reset or two.
+ */
if (portstatus & USB_PORT_STAT_ENABLE)
break;
}
if (tries == MAX_TRIES) {
- USB_HUB_PRINTF("Cannot enable port %i after %i retries, " \
- "disabling port.\n", port + 1, MAX_TRIES);
- USB_HUB_PRINTF("Maybe the USB cable is bad?\n");
+ debug("Cannot enable port %i after %i retries, " \
+ "disabling port.\n", port + 1, MAX_TRIES);
+ debug("Maybe the USB cable is bad?\n");
return -1;
}
/* Check status */
if (usb_get_port_status(dev, port + 1, portsts) < 0) {
- USB_HUB_PRINTF("get_port_status failed\n");
+ debug("get_port_status failed\n");
return;
}
portstatus = le16_to_cpu(portsts->wPortStatus);
- USB_HUB_PRINTF("portstatus %x, change %x, %s\n",
- portstatus,
- le16_to_cpu(portsts->wPortChange),
- portspeed(portstatus));
+ debug("portstatus %x, change %x, %s\n",
+ portstatus,
+ le16_to_cpu(portsts->wPortChange),
+ portspeed(portstatus));
/* Clear the connection change status */
usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_CONNECTION);
/* Disconnect any existing devices under this port */
if (((!(portstatus & USB_PORT_STAT_CONNECTION)) &&
(!(portstatus & USB_PORT_STAT_ENABLE))) || (dev->children[port])) {
- USB_HUB_PRINTF("usb_disconnect(&hub->children[port]);\n");
+ debug("usb_disconnect(&hub->children[port]);\n");
/* Return now if nothing is connected */
if (!(portstatus & USB_PORT_STAT_CONNECTION))
return;
mdelay(200);
/* Allocate a new device struct for it */
- usb = usb_alloc_new_device();
+ usb = usb_alloc_new_device(dev->controller);
- if (portstatus & USB_PORT_STAT_HIGH_SPEED)
+ switch (portstatus & USB_PORT_STAT_SPEED_MASK) {
+ case USB_PORT_STAT_SUPER_SPEED:
+ usb->speed = USB_SPEED_SUPER;
+ break;
+ case USB_PORT_STAT_HIGH_SPEED:
usb->speed = USB_SPEED_HIGH;
- else if (portstatus & USB_PORT_STAT_LOW_SPEED)
+ break;
+ case USB_PORT_STAT_LOW_SPEED:
usb->speed = USB_SPEED_LOW;
- else
+ break;
+ default:
usb->speed = USB_SPEED_FULL;
+ break;
+ }
dev->children[port] = usb;
usb->parent = dev;
/* Run it through the hoops (find a driver, etc) */
if (usb_new_device(usb)) {
/* Woops, disable the port */
- USB_HUB_PRINTF("hub: disabling port %d\n", port + 1);
+ usb_free_device();
+ dev->children[port] = NULL;
+ debug("hub: disabling port %d\n", port + 1);
usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_ENABLE);
}
}
static int usb_hub_configure(struct usb_device *dev)
{
- int i;
+ int i, length;
ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, USB_BUFSIZ);
unsigned char *bitmap;
short hubCharacteristics;
struct usb_hub_descriptor *descriptor;
struct usb_hub_device *hub;
-#ifdef USB_HUB_DEBUG
- struct usb_hub_status *hubsts;
-#endif
+ __maybe_unused struct usb_hub_status *hubsts;
/* "allocate" Hub device */
hub = usb_hub_allocate();
hub->pusb_dev = dev;
/* Get the the hub descriptor */
if (usb_get_hub_descriptor(dev, buffer, 4) < 0) {
- USB_HUB_PRINTF("usb_hub_configure: failed to get hub " \
- "descriptor, giving up %lX\n", dev->status);
+ debug("usb_hub_configure: failed to get hub " \
+ "descriptor, giving up %lX\n", dev->status);
return -1;
}
descriptor = (struct usb_hub_descriptor *)buffer;
- /* silence compiler warning if USB_BUFSIZ is > 256 [= sizeof(char)] */
- i = descriptor->bLength;
- if (i > USB_BUFSIZ) {
- USB_HUB_PRINTF("usb_hub_configure: failed to get hub " \
- "descriptor - too long: %d\n",
- descriptor->bLength);
- return -1;
- }
+ length = min(descriptor->bLength, sizeof(struct usb_hub_descriptor));
- if (usb_get_hub_descriptor(dev, buffer, descriptor->bLength) < 0) {
- USB_HUB_PRINTF("usb_hub_configure: failed to get hub " \
- "descriptor 2nd giving up %lX\n", dev->status);
+ if (usb_get_hub_descriptor(dev, buffer, length) < 0) {
+ debug("usb_hub_configure: failed to get hub " \
+ "descriptor 2nd giving up %lX\n", dev->status);
return -1;
}
- memcpy((unsigned char *)&hub->desc, buffer, descriptor->bLength);
+ memcpy((unsigned char *)&hub->desc, buffer, length);
/* adjust 16bit values */
put_unaligned(le16_to_cpu(get_unaligned(
&descriptor->wHubCharacteristics)),
hub->desc.PortPowerCtrlMask[i] = descriptor->PortPowerCtrlMask[i];
dev->maxchild = descriptor->bNbrPorts;
- USB_HUB_PRINTF("%d ports detected\n", dev->maxchild);
+ debug("%d ports detected\n", dev->maxchild);
hubCharacteristics = get_unaligned(&hub->desc.wHubCharacteristics);
switch (hubCharacteristics & HUB_CHAR_LPSM) {
case 0x00:
- USB_HUB_PRINTF("ganged power switching\n");
+ debug("ganged power switching\n");
break;
case 0x01:
- USB_HUB_PRINTF("individual port power switching\n");
+ debug("individual port power switching\n");
break;
case 0x02:
case 0x03:
- USB_HUB_PRINTF("unknown reserved power switching mode\n");
+ debug("unknown reserved power switching mode\n");
break;
}
if (hubCharacteristics & HUB_CHAR_COMPOUND)
- USB_HUB_PRINTF("part of a compound device\n");
+ debug("part of a compound device\n");
else
- USB_HUB_PRINTF("standalone hub\n");
+ debug("standalone hub\n");
switch (hubCharacteristics & HUB_CHAR_OCPM) {
case 0x00:
- USB_HUB_PRINTF("global over-current protection\n");
+ debug("global over-current protection\n");
break;
case 0x08:
- USB_HUB_PRINTF("individual port over-current protection\n");
+ debug("individual port over-current protection\n");
break;
case 0x10:
case 0x18:
- USB_HUB_PRINTF("no over-current protection\n");
+ debug("no over-current protection\n");
break;
}
- USB_HUB_PRINTF("power on to power good time: %dms\n",
- descriptor->bPwrOn2PwrGood * 2);
- USB_HUB_PRINTF("hub controller current requirement: %dmA\n",
- descriptor->bHubContrCurrent);
+ debug("power on to power good time: %dms\n",
+ descriptor->bPwrOn2PwrGood * 2);
+ debug("hub controller current requirement: %dmA\n",
+ descriptor->bHubContrCurrent);
for (i = 0; i < dev->maxchild; i++)
- USB_HUB_PRINTF("port %d is%s removable\n", i + 1,
- hub->desc.DeviceRemovable[(i + 1) / 8] & \
- (1 << ((i + 1) % 8)) ? " not" : "");
+ debug("port %d is%s removable\n", i + 1,
+ hub->desc.DeviceRemovable[(i + 1) / 8] & \
+ (1 << ((i + 1) % 8)) ? " not" : "");
if (sizeof(struct usb_hub_status) > USB_BUFSIZ) {
- USB_HUB_PRINTF("usb_hub_configure: failed to get Status - " \
- "too long: %d\n", descriptor->bLength);
+ debug("usb_hub_configure: failed to get Status - " \
+ "too long: %d\n", descriptor->bLength);
return -1;
}
if (usb_get_hub_status(dev, buffer) < 0) {
- USB_HUB_PRINTF("usb_hub_configure: failed to get Status %lX\n",
- dev->status);
+ debug("usb_hub_configure: failed to get Status %lX\n",
+ dev->status);
return -1;
}
-#ifdef USB_HUB_DEBUG
+#ifdef DEBUG
hubsts = (struct usb_hub_status *)buffer;
#endif
- USB_HUB_PRINTF("get_hub_status returned status %X, change %X\n",
- le16_to_cpu(hubsts->wHubStatus),
- le16_to_cpu(hubsts->wHubChange));
- USB_HUB_PRINTF("local power source is %s\n",
- (le16_to_cpu(hubsts->wHubStatus) & HUB_STATUS_LOCAL_POWER) ? \
- "lost (inactive)" : "good");
- USB_HUB_PRINTF("%sover-current condition exists\n",
- (le16_to_cpu(hubsts->wHubStatus) & HUB_STATUS_OVERCURRENT) ? \
- "" : "no ");
+
+ debug("get_hub_status returned status %X, change %X\n",
+ le16_to_cpu(hubsts->wHubStatus),
+ le16_to_cpu(hubsts->wHubChange));
+ debug("local power source is %s\n",
+ (le16_to_cpu(hubsts->wHubStatus) & HUB_STATUS_LOCAL_POWER) ? \
+ "lost (inactive)" : "good");
+ debug("%sover-current condition exists\n",
+ (le16_to_cpu(hubsts->wHubStatus) & HUB_STATUS_OVERCURRENT) ? \
+ "" : "no ");
usb_hub_power_on(hub);
+ /*
+ * Reset any devices that may be in a bad state when applying
+ * the power. This is a __weak function. Resetting of the devices
+ * should occur in the board file of the device.
+ */
+ for (i = 0; i < dev->maxchild; i++)
+ usb_hub_reset_devices(i + 1);
+
for (i = 0; i < dev->maxchild; i++) {
ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1);
unsigned short portstatus, portchange;
+ int ret;
+ ulong start = get_timer(0);
+
+ /*
+ * Wait for (whichever finishes first)
+ * - A maximum of 10 seconds
+ * This is a purely observational value driven by connecting
+ * a few broken pen drives and taking the max * 1.5 approach
+ * - connection_change and connection state to report same
+ * state
+ */
+ do {
+ ret = usb_get_port_status(dev, i + 1, portsts);
+ if (ret < 0) {
+ debug("get_port_status failed\n");
+ break;
+ }
+
+ portstatus = le16_to_cpu(portsts->wPortStatus);
+ portchange = le16_to_cpu(portsts->wPortChange);
+
+ if ((portchange & USB_PORT_STAT_C_CONNECTION) ==
+ (portstatus & USB_PORT_STAT_CONNECTION))
+ break;
+
+ } while (get_timer(start) < CONFIG_SYS_HZ * 10);
- if (usb_get_port_status(dev, i + 1, portsts) < 0) {
- USB_HUB_PRINTF("get_port_status failed\n");
+ if (ret < 0)
continue;
- }
- portstatus = le16_to_cpu(portsts->wPortStatus);
- portchange = le16_to_cpu(portsts->wPortChange);
- USB_HUB_PRINTF("Port %d Status %X Change %X\n",
- i + 1, portstatus, portchange);
+ debug("Port %d Status %X Change %X\n",
+ i + 1, portstatus, portchange);
if (portchange & USB_PORT_STAT_C_CONNECTION) {
- USB_HUB_PRINTF("port %d connection change\n", i + 1);
+ debug("port %d connection change\n", i + 1);
usb_hub_port_connect_change(dev, i);
}
if (portchange & USB_PORT_STAT_C_ENABLE) {
- USB_HUB_PRINTF("port %d enable change, status %x\n",
- i + 1, portstatus);
+ debug("port %d enable change, status %x\n",
+ i + 1, portstatus);
usb_clear_port_feature(dev, i + 1,
USB_PORT_FEAT_C_ENABLE);
-
+ /*
+ * The following hack causes a ghost device problem
+ * to Faraday EHCI
+ */
+#ifndef CONFIG_USB_EHCI_FARADAY
/* EM interference sometimes causes bad shielded USB
* devices to be shutdown by the hub, this hack enables
* them again. Works at least with mouse driver */
if (!(portstatus & USB_PORT_STAT_ENABLE) &&
(portstatus & USB_PORT_STAT_CONNECTION) &&
((dev->children[i]))) {
- USB_HUB_PRINTF("already running port %i " \
- "disabled by hub (EMI?), " \
- "re-enabling...\n", i + 1);
- usb_hub_port_connect_change(dev, i);
+ debug("already running port %i " \
+ "disabled by hub (EMI?), " \
+ "re-enabling...\n", i + 1);
+ usb_hub_port_connect_change(dev, i);
}
+#endif
}
if (portstatus & USB_PORT_STAT_SUSPEND) {
- USB_HUB_PRINTF("port %d suspend change\n", i + 1);
+ debug("port %d suspend change\n", i + 1);
usb_clear_port_feature(dev, i + 1,
USB_PORT_FEAT_SUSPEND);
}
if (portchange & USB_PORT_STAT_C_OVERCURRENT) {
- USB_HUB_PRINTF("port %d over-current change\n", i + 1);
+ debug("port %d over-current change\n", i + 1);
usb_clear_port_feature(dev, i + 1,
USB_PORT_FEAT_C_OVER_CURRENT);
usb_hub_power_on(hub);
}
if (portchange & USB_PORT_STAT_C_RESET) {
- USB_HUB_PRINTF("port %d reset change\n", i + 1);
+ debug("port %d reset change\n", i + 1);
usb_clear_port_feature(dev, i + 1,
USB_PORT_FEAT_C_RESET);
}
if ((ep->bmAttributes & 3) != 3)
return 0;
/* We found a hub */
- USB_HUB_PRINTF("USB hub found\n");
+ debug("USB hub found\n");
ret = usb_hub_configure(dev);
return ret;
}
projects / karo-tx-uboot.git / blobdiff