HelenOS sources

XHCI_GET_CTX_FIELD  187 uspace/drv/bus/usb/xhci/hw_struct/context.h     ((xhci_ep_ctx_t *)   XHCI_GET_CTX_FIELD(device, (dev_ctx), (hc), (dci)))
XHCI_GET_CTX_FIELD  189 uspace/drv/bus/usb/xhci/hw_struct/context.h     ((xhci_slot_ctx_t *) XHCI_GET_CTX_FIELD(device, (dev_ctx), (hc), 0))
XHCI_GET_CTX_FIELD  261 uspace/drv/bus/usb/xhci/hw_struct/context.h     ((xhci_input_ctrl_ctx_t *) XHCI_GET_CTX_FIELD(input, (ictx), (hc), 0))
XHCI_GET_CTX_FIELD  263 uspace/drv/bus/usb/xhci/hw_struct/context.h     ((xhci_device_ctx_t *) XHCI_GET_CTX_FIELD(input, (ictx), (hc), 1))
HelenOS homepage, sources at GitHub