static void usb_hub_power_on(struct usb_hub_device *hub)
{
int i;
struct usb_device *dev;
unsigned pgood_delay = hub->desc.bPwrOn2PwrGood * 2;
dev = hub->pusb_dev;
/*
* Enable power to the ports:
* Here we Power-cycle the ports: aka,
* turning them off and turning on again.
*/
for (i = 0; i < dev->maxchild; i++) {
usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_POWER);
dev_dbg(&dev->dev, "port %d returns %lX\n", i + 1, dev->status);
}
/* Wait at least 2 * bPwrOn2PwrGood for PP to change */
mdelay(pgood_delay);
/* Enable power to the ports */
dev_dbg(&dev->dev, "enabling power on all ports\n");
for (i = 0; i < dev->maxchild; i++) {
usb_set_port_feature(dev, i + 1, USB_PORT_FEAT_POWER);
dev_dbg(&dev->dev, "port %d returns %lX\n", i + 1, dev->status);
}
/* power on is encoded in 2ms increments -> times 2 for the actual delay */
mdelay(pgood_delay + 1000);
}
static int usb_hub_port_reset(USB_DEV_T *hub, int port,
USB_DEV_T *dev, uint32_t delay)
{
int i;
USB_info("usb_hub_port_reset: hub:%d, port:%d dev:%x\n", hub->devnum, port + 1, (int)dev);
/* Reset the port */
for(i = 0; i < HUB_RESET_TRIES; i++) /* retry loop */
{
usb_set_port_feature(hub, port + 1, USB_PORT_FEAT_RESET);
/* return success if the port reset OK */
if(!usb_hub_port_wait_reset(hub, port, dev, delay))
{
usb_clear_port_feature(hub, port + 1, USB_PORT_FEAT_C_RESET);
return 0;
}
USB_error("port %d of hub %d not enabled, %dth trying reset again...\n", port + 1, hub->devnum, i);
delay = HUB_LONG_RESET_TIME;
}
USB_error("Cannot enable port %i of hub %d, disabling port.\n", port + 1, hub->devnum);
USB_error("Error - Maybe the USB cable is bad?\n");
return -1;
}
/* return: -1 on error, 0 on success, 1 on disconnect. */
static int usb_hub_port_reset(struct usb_device *hub, int port,
struct usb_device *dev, unsigned int delay)
{
int i, status;
usb_enable_pci_slot1_frame(__LINE__); // Ed Lai 2005/06/25
/* Reset the port */
for (i = 0; i < HUB_RESET_TRIES; i++) {
usb_set_port_feature(hub, port + 1, USB_PORT_FEAT_RESET);
/* return on disconnect or reset */
status = usb_hub_port_wait_reset(hub, port, dev, delay);
if (status != -1) {
usb_clear_port_feature(hub, port + 1, USB_PORT_FEAT_C_RESET);
return status;
}
dbg("port %d of hub %d not enabled, trying reset again...",
port + 1, hub->devnum);
delay = HUB_LONG_RESET_TIME;
}
err("Cannot enable port %i of hub %d, disabling port.",
port + 1, hub->devnum);
err("Maybe the USB cable is bad?");
return -1;
}
static int usb_hub_port_reset(struct usb_device *hub, int port,
struct usb_device *dev, unsigned int delay)
{
int i;
/* Reset the port */
for (i = 0; i < HUB_RESET_TRIES; i++) {
usb_set_port_feature(hub, port + 1, USB_PORT_FEAT_RESET);
/* return success if the port reset OK */
if (!usb_hub_port_wait_reset(hub, port, dev, delay)) {
usb_clear_port_feature(hub, port + 1, USB_PORT_FEAT_C_RESET);
return 0;
}
dbg("port %d of hub %d not enabled, trying reset again...",
port + 1, hub->devnum);
delay = HUB_LONG_RESET_TIME;
}
err("Cannot enable port %i of hub %d, disabling port.",
port + 1, hub->devnum);
err("Maybe the USB cable is bad?");
return -1;
}
/* return: -1 on error, 0 on success, 1 on disconnect. */
static int usb_hub_port_reset(struct usb_device *hub, int port,
struct usb_device *dev, unsigned int delay)
{
int i, status;
/* Reset the port */
for (i = 0; i < HUB_RESET_TRIES; i++) {
usb_set_port_feature(hub, port + 1, USB_PORT_FEAT_RESET);
/* return on disconnect or reset */
status = usb_hub_port_wait_reset(hub, port, dev, delay);
if (status != -1) {
usb_clear_port_feature(hub, port + 1, USB_PORT_FEAT_C_RESET);
return status;
}
dbg("port %d of hub %d not enabled, trying reset again...",
port + 1, hub->devnum);
delay = HUB_LONG_RESET_TIME;
}
//2005-01-21 by kanki for fixing usb loop issue (temporary solution from broadcom)
//err("Cannot enable port %i of hub %d, disabling port.",
// port + 1, hub->devnum);
//err("Maybe the USB cable is bad?");
return -1;
}
static void usb_hub_power_on(struct usb_hub_device *hub)
{
int i;
struct usb_device *dev;
unsigned pgood_delay = hub->desc.bPwrOn2PwrGood * 2;
const char *env;
dev = hub->pusb_dev;
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);
debug("port %d returns %lX\n", i + 1, dev->status);
}
/*
* Wait for power to become stable,
* plus spec-defined max time for device to connect
* but allow this time to be increased via env variable as some
* devices break the spec and require longer warm-up times
*/
env = getenv("usb_pgood_delay");
if (env)
pgood_delay = max(pgood_delay,
(unsigned)simple_strtol(env, NULL, 0));
debug("pgood_delay=%dms\n", pgood_delay);
mdelay(pgood_delay + 1000);
}
/* return: -1 on error, 0 on success, 1 on disconnect. */
static int usb_hub_port_reset(struct usb_device *hub, int port,
struct usb_device *dev, unsigned int delay)
{
int i, status;
/* Reset the port */
for (i = 0; i < HUB_RESET_TRIES; i++) {
usb_set_port_feature(hub, port + 1, USB_PORT_FEAT_RESET);
/* return on disconnect or reset */
status = usb_hub_port_wait_reset(hub, port, dev, delay);
// !!TB - dd-wrt fix for USB 2.0
if (status == 0) {
/* TRSTRCY = 10 ms; plus some extra */
wait_ms(10 + 40);
}
if (status != -1) {
usb_clear_port_feature(hub, port + 1, USB_PORT_FEAT_C_RESET);
return status;
}
dbg("port %d of hub %d not enabled, trying reset again...",
port + 1, hub->devnum);
delay = HUB_LONG_RESET_TIME;
}
err("Cannot enable port %i of hub %d, disabling port.",
port + 1, hub->devnum);
err("Maybe the USB cable is bad?");
return -1;
}
/* return: -1 on error, 0 on success, 1 on disconnect. */
static int usb_hub_port_reset(struct usb_device *hub, int port,
struct usb_device *dev, unsigned int delay)
{
int i, status;
DBG_HOST_HUB("### >>> Enter hub.c file --> usb_hub_port_reset function \n");
/* Reset the port */
for (i = 0; i < HUB_RESET_TRIES; i++) {
usb_set_port_feature(hub, port + 1, USB_PORT_FEAT_RESET);
/* return on disconnect or reset */
status = usb_hub_port_wait_reset(hub, port, dev, delay);
if (status != -1) {
usb_clear_port_feature(hub, port + 1, USB_PORT_FEAT_C_RESET);
return status;
}
dbg("port %d of hub %d not enabled, trying reset again...",
port + 1, hub->devnum);
delay = HUB_LONG_RESET_TIME;
}
err("Cannot enable port %i of hub %d, disabling port.",
port + 1, hub->devnum);
err("Maybe the USB cable is bad?");
return -1;
}
static void usb_hub_power_on(struct usb_hub_device *hub)
{
int i;
struct usb_device *dev;
unsigned pgood_delay = hub->desc.bPwrOn2PwrGood * 2;
ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1);
unsigned short portstatus;
int ret;
dev = hub->pusb_dev;
/*
* Enable power to the ports:
* Here we Power-cycle the ports: aka,
* turning them off and turning on again.
*/
debug("enabling power on all ports\n");
for (i = 0; i < dev->maxchild; i++) {
usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_POWER);
debug("port %d returns %lX\n", i + 1, dev->status);
}
/* Wait at least 2*bPwrOn2PwrGood for PP to change */
mdelay(pgood_delay);
for (i = 0; i < dev->maxchild; i++) {
ret = usb_get_port_status(dev, i + 1, portsts);
if (ret < 0) {
debug("port %d: get_port_status failed\n", i + 1);
return;
}
/*
* Check to confirm the state of Port Power:
* xHCI says "After modifying PP, s/w shall read
* PP and confirm that it has reached the desired state
* before modifying it again, undefined behavior may occur
* if this procedure is not followed".
* EHCI doesn't say anything like this, but no harm in keeping
* this.
*/
portstatus = le16_to_cpu(portsts->wPortStatus);
if (portstatus & (USB_PORT_STAT_POWER << 1)) {
debug("port %d: Port power change failed\n", i + 1);
return;
}
}
for (i = 0; i < dev->maxchild; i++) {
usb_set_port_feature(dev, i + 1, USB_PORT_FEAT_POWER);
debug("port %d returns %lX\n", i + 1, dev->status);
}
/* Wait for power to become stable */
mdelay(max(pgood_delay, CONFIG_USB_HUB_MIN_POWER_ON_DELAY));
}
static void usb_hub_power_on(struct usb_hub *hub)
{
int i;
/* Enable power to the ports */
dbg("enabling power on all ports");
for (i = 0; i < hub->descriptor->bNbrPorts; i++)
usb_set_port_feature(hub->dev, i + 1, USB_PORT_FEAT_POWER);
/* Wait for power to be enabled */
wait_ms(hub->descriptor->bPwrOn2PwrGood * 2);
}
int hub_port_reset(struct usb_device *dev, int port,
unsigned short *portstat)
{
int tries;
struct usb_port_status portsts;
unsigned short portstatus, portchange;
dev_dbg(&dev->dev, "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) {
dev_dbg(&dev->dev, "get_port_status failed status %lX\n",
dev->status);
return -1;
}
portstatus = le16_to_cpu(portsts.wPortStatus);
portchange = le16_to_cpu(portsts.wPortChange);
dev_dbg(&dev->dev, "portstatus %x, change %x, %s\n",
portstatus, portchange,
portspeed(portstatus));
dev_dbg(&dev->dev, "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;
if (portstatus & USB_PORT_STAT_ENABLE)
break;
mdelay(200);
}
if (tries == MAX_TRIES) {
dev_dbg(&dev->dev, "Cannot enable port %i after %i retries, " \
"disabling port.\n", port + 1, MAX_TRIES);
dev_dbg(&dev->dev, "Maybe the USB cable is bad?\n");
return -1;
}
usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_RESET);
*portstat = portstatus;
return 0;
}
static void usb_hub_power_on(struct usb_hub *hub)
{
int i;
unsigned pgood_delay = hub->descriptor->bPwrOn2PwrGood * 2;
/* Enable power to the ports */
dbg("enabling power on all ports");
for (i = 0; i < hub->descriptor->bNbrPorts; i++)
usb_set_port_feature(hub->dev, i + 1, USB_PORT_FEAT_POWER);
/* Wait at least 100 msec for power to become stable */
wait_ms(max(pgood_delay, (unsigned) 100));
}
static void usb_hub_power_on(USB_HUB_T *hub)
{
int i;
/* Enable power to the ports */
for(i = 0; i < hub->descriptor.bNbrPorts; i++)
{
USB_info("enable port:%d of hub:%d\n", i + 1, hub->dev->devnum);
usb_set_port_feature(hub->dev, i + 1, USB_PORT_FEAT_POWER);
}
/* Wait for power to be enabled */
usbh_mdelay(hub->descriptor.bPwrOn2PwrGood * 2);
}
static void usb_hub_power_on(struct usb_hub_device *hub)
{
int i;
struct usb_device *dev;
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");
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);
}
/* Wait at least 100 msec for power to become stable */
mdelay(max(pgood_delay, (unsigned)100));
}
static void usb_hub_power_on(struct usb_hub_device *hub)
{
int i;
struct usb_device *dev;
unsigned pgood_delay = hub->desc.bPwrOn2PwrGood * 2;
dev = hub->pusb_dev;
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);
debug("port %d returns %lX\n", i + 1, dev->status);
}
/*
* Wait for power to become stable,
* plus spec-defined max time for device to connect
*/
mdelay(pgood_delay + 1000);
}
int hub_port_reset(struct usb_device *dev, int port,
unsigned short *portstat)
{
int tries;
ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1);
unsigned short portstatus, portchange;
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) {
debug("get_port_status failed status %lX\n",
dev->status);
return -1;
}
portstatus = le16_to_cpu(portsts->wPortStatus);
portchange = le16_to_cpu(portsts->wPortChange);
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;
mdelay(200);
}
if (tries == MAX_TRIES) {
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;
}
usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_RESET);
*portstat = portstatus;
return 0;
}
int hub_port_reset(struct usb_device *dev, int port,
unsigned short *portstat)
{
int tries, status;
unsigned delay = HUB_SHORT_RESET_TIME;
int oldspeed = dev->speed;
/* root hub ports have a slightly longer reset period
* (from USB 2.0 spec, section 7.1.7.5)
*/
if (!dev->parent) {
delay = HUB_ROOT_RESET_TIME;
}
/* Some low speed devices have problems with the quick delay, so */
/* be a bit pessimistic with those devices. RHbug #23670 */
if (oldspeed == USB_SPEED_LOW)
delay = HUB_LONG_RESET_TIME;
USB_HUB_PRINTF("hub_port_reset: resetting port %d...\n", port);
for (tries = 0; tries < MAX_TRIES; tries++) {
status = usb_set_port_feature(dev, port + 1, USB_PORT_FEAT_RESET);
if (status)
USB_HUB_PRINTF("cannot reset port %d (err = %d)\n",
port, status);
else {
status = hub_port_wait_reset(dev, port, delay,
portstat);
if (status && status != -ENOTCONN)
USB_HUB_PRINTF("port_wait_reset: err = %d\n",
status);
}
/* return on disconnect or reset */
switch (status) {
case 0:
/* TRSTRCY = 10 ms; plus some extra */
mdelay(10 + 40);
/* FALL THROUGH */
case -1:
case -ENOTCONN:
/* we have finished trying to reset, so return */
usb_clear_port_feature(dev,
port + 1, USB_PORT_FEAT_C_RESET);
return 0;
}
USB_HUB_PRINTF (
"port %d not enabled, trying reset again...\n",
port);
delay = HUB_LONG_RESET_TIME;
}
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");
return -1;
}
return 0;
}