static void usbhub_reset_device(usbdev_t *dev,int port,usb_port_status_t *portstatus)
{
console_log("USB: Resetting device on bus %d port %d",dev->ud_bus->ub_num,port);
#ifndef _CFE_
fflush(stdout);
#endif
usbhub_set_port_feature(dev,port,USB_PORT_FEATURE_RESET);
usbhub_get_port_status(dev,port,portstatus);
for (;;) {
usbhub_get_port_status(dev,port,portstatus);
if ((GETUSBFIELD((portstatus),wPortStatus) & USB_PORT_STATUS_RESET) == 0) break;
usb_delay_ms(dev->ud_bus,250);
}
usb_delay_ms(dev->ud_bus,250);
usbhub_clear_port_feature(dev,port,USB_PORT_FEATURE_C_PORT_RESET);
}
static void usbhub_scan_ports(usbdev_t *dev,void *arg)
{
uint16_t current;
uint16_t changed;
usbhub_softc_t *softc;
int idx;
int res;
int len;
uint8_t *buf;
usbdev_t *newdev;
usb_driver_t *newdrv;
int addr;
usb_port_status_t *portstatus;
usb_config_descr_t cfgdescr;
unsigned int powerondelay;
if (!IS_HUB(dev)) return; /* should not happen. */
portstatus = usb_dma_alloc(sizeof(usb_port_status_t));
if (portstatus == NULL) return;
/*
* We know this is a hub. Get the softc back.
*/
softc = (usbhub_softc_t *) dev->ud_private;
powerondelay = ((unsigned int) softc->uhub_descr.bPowerOnToPowerGood)*2 + 20;
/*
* Turn on the power to the ports whose power is not yet on.
*/
for (idx = 0; idx < softc->uhub_nports; idx++) {
usbhub_get_port_status(dev,idx+1,portstatus);
current = GETUSBFIELD(portstatus,wPortStatus);
changed = GETUSBFIELD(portstatus,wPortChange);
if (usb_noisy > 1) {
printf("BeforePowerup: port %d status %04X changed %04X\n",idx+1,current,changed);
}
if (!(current & USB_PORT_STATUS_POWER)) {
if (usb_noisy > 1) console_log("USB: Powering up bus %d port %d",
dev->ud_bus->ub_num,idx+1);
usbhub_set_port_feature(dev,idx+1,USB_PORT_FEATURE_POWER);
usb_delay_ms(dev->ud_bus,powerondelay);
}
}
/*
* Begin exploration at this level.
*/
for (idx = 0; idx < softc->uhub_nports; idx++) {
usbhub_get_port_status(dev,idx+1,portstatus);
current = GETUSBFIELD(portstatus,wPortStatus);
changed = GETUSBFIELD(portstatus,wPortChange);
if (usb_noisy > 0) {
printf("USB: Explore: Bus %d Hub %d port %d status %04X changed %04X\n",
dev->ud_bus->ub_num,
dev->ud_address,idx+1,current,changed);
usb_dbg_dumpportstatus(idx+1,portstatus,1);
}
// if (changed & USB_PORT_STATUS_RESET) {
// usbhub_clear_port_feature(dev,idx+1,USB_PORT_FEATURE_C_PORT_RESET);
// }
if (changed & USB_PORT_STATUS_ENABLED) {
usbhub_clear_port_feature(dev,idx+1,USB_PORT_FEATURE_C_PORT_ENABLE);
}
if (changed & USB_PORT_STATUS_CONNECT) {
/*
* A device was either connected or disconnected.
* Clear the status change first.
*/
usbhub_clear_port_feature(dev,idx+1,USB_PORT_FEATURE_C_PORT_CONNECTION);
if (current & USB_PORT_STATUS_CONNECT) {
/*
* The device has been CONNECTED.
*/
console_log("USB: New device connected to bus %d hub %d port %d",
dev->ud_bus->ub_num,
dev->ud_address,idx+1);
/*
* Reset the device. Reuse our old port status structure
* so we get the latest status. Some devices do not report
* lowspeed until they are reset.
*/
usbhub_reset_device(dev,idx+1,portstatus);
current = GETUSBFIELD(portstatus,wPortStatus);
changed = GETUSBFIELD(portstatus,wPortChange);
/*
* Create a device for this port.
*/
newdev = usb_create_device(dev->ud_bus,(current & USB_PORT_STATUS_LOWSPD) ? 1 : 0);
/*
* Get the device descriptor.
*/
res = usb_get_device_descriptor(newdev,&newdev->ud_devdescr,TRUE);
if (usb_noisy > 1) usb_dbg_dumpdescriptors(newdev,(uint8_t *) &(newdev->ud_devdescr),8);
/*
* Set up the max packet size for the control endpoint,
* then get the rest of the descriptor.
*/
usb_set_ep0mps(newdev,newdev->ud_devdescr.bMaxPacketSize0);
res = usb_get_device_descriptor(newdev,&newdev->ud_devdescr,FALSE);
/*
* Obtain a new address and set the address of the
* root hub to this address.
*/
addr = usb_new_address(newdev->ud_bus);
res = usb_set_address(newdev,addr);
/*
* Get the configuration descriptor and all the
* associated interface and endpoint descriptors.
*/
res = usb_get_config_descriptor(newdev,&cfgdescr,0,
sizeof(usb_config_descr_t));
if (res != sizeof(usb_config_descr_t)) {
printf("[a] usb_get_config_descriptor returns %d\n",res);
}
len = GETUSBFIELD(&cfgdescr,wTotalLength);
buf = usb_dma_alloc(len);
res = usb_get_config_descriptor(newdev,(usb_config_descr_t *)buf,0,len);
if (res != len) {
printf("[b] usb_get_config_descriptor returns %d\n",res);
}
newdev->ud_cfgdescr = (usb_config_descr_t *) buf;
if (usb_noisy > 1) usb_dbg_dumpdescriptors(newdev,buf,len);
/*
* Point the hub at the devices it owns
*/
softc->uhub_devices[idx] = newdev;
/*
* Find the driver for this. It had better be the hub
* driver.
*/
newdrv = usb_find_driver(newdev);
/*
* Call the attach method.
*/
if (newdrv) {
newdev->ud_drv = newdrv; /* remember driver dispatch in device */
(*(newdrv->udrv_attach))(newdev,newdrv);
}
}
else {
/*
* The device has been DISCONNECTED.
*/
console_log("USB: Device disconnected from bus %d hub %d port %d",
dev->ud_bus->ub_num,
dev->ud_address,idx+1);
/*
* Recover pointer to device below hub and clear
* this pointer.
*/
newdev = softc->uhub_devices[idx]; /* Get device pointer */
usbhub_markdetached(newdev); /* mark device and all subordinate
devices as "removing" */
softc->uhub_devices[idx] = NULL; /* remove device from hub */
/*
* Deassign the USB device's address and then
* call detach method to free resources. Devices that
* do not have drivers will not have any methods.
*/
if (newdev) {
if (newdev->ud_drv) {
/* close open pipes, cancel reqs */
usb_destroy_all_pipes(newdev);
/*
* Try to process the done queue. This will complete any
* requests that made it out of the pipes while we were
* doing the stuff above.
*/
usb_poll(newdev->ud_bus);
/* Call detach method, clean up device softc */
(*(newdev->ud_drv->udrv_detach))(newdev);
}
else {
if (usb_noisy > 0) {
console_log("USB: Detached device on bus %d hub %d port %d "
"has no methods",
dev->ud_bus->ub_num,
dev->ud_address,idx+1);
}
}
if (newdev->ud_cfgdescr) usb_dma_free(newdev->ud_cfgdescr);
usb_destroy_device(newdev);
}
}
}
}
usb_dma_free(portstatus);
/*
* Queue up a request for the interrupt pipe. This will catch further
* changes at this port.
*/
usbhub_queue_intreq(dev,softc);
}