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#include <sys/usb/usba.h> int usb_get_status(dev_info_t *dip, usb_pipe_handle_t pipe_handle, uint_t request_type, uint_t which, uint16_t *status, usb_flags_t flags);
Solaris DDI specific (Solaris DDI)
dip
Pointer to device's dev_info structure.
pipe_handle
Default control pipe handle on which request is made.
request_type
bmRequestType. Either: USB_DEV_REQ_RCPT_DEV \(em Get device status. USB_DEV_REQ_RCPT_IF \(em Get interface status. USB_DEV_REQ_RCPT_EP \(em Get endpoint status.
which
Device, interface or endpoint from which to get status. Either number of interface or endpoint, or 0 if device status requested.
status
Address into which the status is written.
flags
None are recognized.
The usb_get_status() function returns the status of a device, interface or endpoint. All status requests use the default control pipe. Length of data returned is USB_GET_STATUS_LEN bytes. Always block and wait for resources if not available, regardless of the flags argument.
When the request_type recipient is USB_DEV_REQ_RCPT_DEV, device status is requested. Status returned includes bits for USB_DEV_SLF_PWRD_STATUS (device is currently self-powered) and USB_DEV_RWAKEUP_STATUS (device has remote wakeup enabled). A set bit indicates the corresponding status.
When the request_type is USB_DEV_REQ_RCPT_EP, endpoint status is requested. Status returned includes bits for USB_EP_HALT_STATUS (endpoint is halted). A set bit indicates the corresponding status.
When the request_type is USB_DEV_REQ_RCPT_IF, interface status is requested and USB_IF_STATUS (zero) is returned.
USB_SUCCESS
Status returned successfully in the status argument.
USB_INVALID_ARGS
USB_INVALID_PIPE
Pipe handle is NULL.
USB_FAILURE
Status not returned successfully.
May be called from user or kernel context.
uint16_t status;
if (usb_get_status(
dip, pipe_handle, USB_DEV_REQ_RCPT_DEV, 0 &status, 0) ==
USB_SUCCESS) {
if (status & USB_DEV_SLF_PWRD_STATUS) {
cmn_err (CE_WARN,
"%s%d: USB device is running on its own power.",
ddi_driver_name(dip), ddi_get_instance(dip));
}
}
See attributes(5) for descriptions of the following attributes:
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| Architecture | PCI-based systems |
| Interface stability | Committed |
attributes(5), usb_clr_feature(9F), usb_get_alt_if(9F), usb_pipe_get_state(9F), usb_get_cfg(9F),