diff options
Diffstat (limited to 'common/usb.c')
| -rw-r--r-- | common/usb.c | 432 |
1 files changed, 2 insertions, 430 deletions
diff --git a/common/usb.c b/common/usb.c index de312124b..81dcbe281 100644 --- a/common/usb.c +++ b/common/usb.c @@ -82,11 +82,6 @@ char usb_started; /* flag for the started/stopped USB status */ */ static void usb_scan_devices(void); -static int usb_hub_probe(struct usb_device *dev, int ifnum); -static void usb_hub_reset(void); -static int hub_port_reset(struct usb_device *dev, int port, - unsigned short *portstat); - /*********************************************************************** * wait_ms */ @@ -765,7 +760,7 @@ struct usb_device *usb_get_dev_index(int index) /* returns a pointer of a new device structure or NULL, if * no device struct is available */ -static struct usb_device *usb_alloc_new_device(void) +struct usb_device *usb_alloc_new_device(void) { int i; USB_PRINTF("New Device %d\n", dev_index); @@ -791,7 +786,7 @@ static struct usb_device *usb_alloc_new_device(void) * * Returns 0 for success, != 0 for error. */ -static int usb_new_device(struct usb_device *dev) +int usb_new_device(struct usb_device *dev) { int addr, err; int tmp; @@ -979,427 +974,4 @@ static void usb_scan_devices(void) USB_PRINTF("scan end\n"); } - -/**************************************************************************** - * HUB "Driver" - * Probes device for being a hub and configurate it - */ - -static struct usb_hub_device hub_dev[USB_MAX_HUB]; -static int usb_hub_index; - - -static int usb_get_hub_descriptor(struct usb_device *dev, void *data, int size) -{ - return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), - USB_REQ_GET_DESCRIPTOR, USB_DIR_IN | USB_RT_HUB, - USB_DT_HUB << 8, 0, data, size, USB_CNTL_TIMEOUT); -} - -static int usb_clear_hub_feature(struct usb_device *dev, int feature) -{ - return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), - USB_REQ_CLEAR_FEATURE, USB_RT_HUB, feature, - 0, NULL, 0, USB_CNTL_TIMEOUT); -} - -static int usb_clear_port_feature(struct usb_device *dev, int port, int feature) -{ - return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), - USB_REQ_CLEAR_FEATURE, USB_RT_PORT, feature, - port, NULL, 0, USB_CNTL_TIMEOUT); -} - -static int usb_set_port_feature(struct usb_device *dev, int port, int feature) -{ - return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), - USB_REQ_SET_FEATURE, USB_RT_PORT, feature, - port, NULL, 0, USB_CNTL_TIMEOUT); -} - -static int usb_get_hub_status(struct usb_device *dev, void *data) -{ - return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), - USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_HUB, 0, 0, - data, sizeof(struct usb_hub_status), USB_CNTL_TIMEOUT); -} - -static int usb_get_port_status(struct usb_device *dev, int port, void *data) -{ - return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), - USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_PORT, 0, port, - data, sizeof(struct usb_hub_status), USB_CNTL_TIMEOUT); -} - - -static void usb_hub_power_on(struct usb_hub_device *hub) -{ - int i; - struct usb_device *dev; - - 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_ms(hub->desc.bPwrOn2PwrGood * 2); - } -} - -static void usb_hub_reset(void) -{ - usb_hub_index = 0; -} - -static struct usb_hub_device *usb_hub_allocate(void) -{ - if (usb_hub_index < USB_MAX_HUB) - return &hub_dev[usb_hub_index++]; - - printf("ERROR: USB_MAX_HUB (%d) reached\n", USB_MAX_HUB); - return NULL; -} - -#define MAX_TRIES 5 - -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"; -} - -static int hub_port_reset(struct usb_device *dev, int port, - unsigned short *portstat) -{ - int tries; - struct usb_port_status portsts; - unsigned short portstatus, portchange; - - USB_HUB_PRINTF("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); - wait_ms(200); - - if (usb_get_port_status(dev, port + 1, &portsts) < 0) { - USB_HUB_PRINTF("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; - - if (portstatus & USB_PORT_STAT_ENABLE) - break; - - wait_ms(200); - } - - 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; - } - - usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_RESET); - *portstat = portstatus; - return 0; -} - - -void usb_hub_port_connect_change(struct usb_device *dev, int port) -{ - struct usb_device *usb; - struct usb_port_status portsts; - unsigned short portstatus; - - /* Check status */ - if (usb_get_port_status(dev, port + 1, &portsts) < 0) { - USB_HUB_PRINTF("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)); - - /* 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"); - /* Return now if nothing is connected */ - if (!(portstatus & USB_PORT_STAT_CONNECTION)) - return; - } - wait_ms(200); - - /* Reset the port */ - if (hub_port_reset(dev, port, &portstatus) < 0) { - printf("cannot reset port %i!?\n", port + 1); - return; - } - - wait_ms(200); - - /* Allocate a new device struct for it */ - usb = usb_alloc_new_device(); - - if (portstatus & USB_PORT_STAT_HIGH_SPEED) - usb->speed = USB_SPEED_HIGH; - else if (portstatus & USB_PORT_STAT_LOW_SPEED) - usb->speed = USB_SPEED_LOW; - else - usb->speed = USB_SPEED_FULL; - - dev->children[port] = usb; - usb->parent = dev; - usb->portnr = port + 1; - /* 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_clear_port_feature(dev, port + 1, USB_PORT_FEAT_ENABLE); - } -} - - -static int usb_hub_configure(struct usb_device *dev) -{ - int i; - unsigned char buffer[USB_BUFSIZ], *bitmap; - struct usb_hub_descriptor *descriptor; - struct usb_hub_device *hub; -#ifdef USB_HUB_DEBUG - struct usb_hub_status *hubsts; -#endif - - /* "allocate" Hub device */ - hub = usb_hub_allocate(); - if (hub == NULL) - return -1; - 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); - 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; - } - - 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); - return -1; - } - memcpy((unsigned char *)&hub->desc, buffer, descriptor->bLength); - /* adjust 16bit values */ - hub->desc.wHubCharacteristics = - le16_to_cpu(descriptor->wHubCharacteristics); - /* set the bitmap */ - bitmap = (unsigned char *)&hub->desc.DeviceRemovable[0]; - /* devices not removable by default */ - memset(bitmap, 0xff, (USB_MAXCHILDREN+1+7)/8); - bitmap = (unsigned char *)&hub->desc.PortPowerCtrlMask[0]; - memset(bitmap, 0xff, (USB_MAXCHILDREN+1+7)/8); /* PowerMask = 1B */ - - for (i = 0; i < ((hub->desc.bNbrPorts + 1 + 7)/8); i++) - hub->desc.DeviceRemovable[i] = descriptor->DeviceRemovable[i]; - - for (i = 0; i < ((hub->desc.bNbrPorts + 1 + 7)/8); i++) - hub->desc.PortPowerCtrlMask[i] = descriptor->PortPowerCtrlMask[i]; - - dev->maxchild = descriptor->bNbrPorts; - USB_HUB_PRINTF("%d ports detected\n", dev->maxchild); - - switch (hub->desc.wHubCharacteristics & HUB_CHAR_LPSM) { - case 0x00: - USB_HUB_PRINTF("ganged power switching\n"); - break; - case 0x01: - USB_HUB_PRINTF("individual port power switching\n"); - break; - case 0x02: - case 0x03: - USB_HUB_PRINTF("unknown reserved power switching mode\n"); - break; - } - - if (hub->desc.wHubCharacteristics & HUB_CHAR_COMPOUND) - USB_HUB_PRINTF("part of a compound device\n"); - else - USB_HUB_PRINTF("standalone hub\n"); - - switch (hub->desc.wHubCharacteristics & HUB_CHAR_OCPM) { - case 0x00: - USB_HUB_PRINTF("global over-current protection\n"); - break; - case 0x08: - USB_HUB_PRINTF("individual port over-current protection\n"); - break; - case 0x10: - case 0x18: - USB_HUB_PRINTF("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); - - 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" : ""); - - if (sizeof(struct usb_hub_status) > USB_BUFSIZ) { - USB_HUB_PRINTF("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); - return -1; - } - -#ifdef USB_HUB_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 "); - usb_hub_power_on(hub); - - for (i = 0; i < dev->maxchild; i++) { - struct usb_port_status portsts; - unsigned short portstatus, portchange; - - if (usb_get_port_status(dev, i + 1, &portsts) < 0) { - USB_HUB_PRINTF("get_port_status failed\n"); - 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); - - if (portchange & USB_PORT_STAT_C_CONNECTION) { - USB_HUB_PRINTF("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); - usb_clear_port_feature(dev, i + 1, - USB_PORT_FEAT_C_ENABLE); - - /* 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); - } - } - if (portstatus & USB_PORT_STAT_SUSPEND) { - USB_HUB_PRINTF("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); - 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); - usb_clear_port_feature(dev, i + 1, - USB_PORT_FEAT_C_RESET); - } - } /* end for i all ports */ - - return 0; -} - -static int usb_hub_probe(struct usb_device *dev, int ifnum) -{ - struct usb_interface *iface; - struct usb_endpoint_descriptor *ep; - int ret; - - iface = &dev->config.if_desc[ifnum]; - /* Is it a hub? */ - if (iface->desc.bInterfaceClass != USB_CLASS_HUB) - return 0; - /* Some hubs have a subclass of 1, which AFAICT according to the */ - /* specs is not defined, but it works */ - if ((iface->desc.bInterfaceSubClass != 0) && - (iface->desc.bInterfaceSubClass != 1)) - return 0; - /* Multiple endpoints? What kind of mutant ninja-hub is this? */ - if (iface->desc.bNumEndpoints != 1) - return 0; - ep = &iface->ep_desc[0]; - /* Output endpoint? Curiousier and curiousier.. */ - if (!(ep->bEndpointAddress & USB_DIR_IN)) - return 0; - /* If it's not an interrupt endpoint, we'd better punt! */ - if ((ep->bmAttributes & 3) != 3) - return 0; - /* We found a hub */ - USB_HUB_PRINTF("USB hub found\n"); - ret = usb_hub_configure(dev); - return ret; -} - /* EOF */ |