/* SPDX-License-Identifier: GPL-2.0-or-later */ #ifndef __DEVICE_XHCI_H__ #define __DEVICE_XHCI_H__ #include <stdint.h> #include <device/device.h> #include <commonlib/bsd/cb_err.h> #define XHCI_HCCPARAMS1_XECP 0x12 #define XHCI_ECP_CAP_ID_LEGACY 1 #define XHCI_ECP_CAP_ID_SUPP 2 struct xhci_supported_protocol { union { uint32_t reg0; struct { uint32_t cap_id : 8; uint32_t next_ptr : 8; uint32_t minor_rev : 8; uint32_t major_rev : 8; }; }; union { uint32_t reg1; char name[4]; }; union { uint32_t reg2; struct { uint32_t port_offset : 8; uint32_t port_count : 8; uint32_t reserved : 12; uint32_t protocol_speed_id_count : 4; }; }; }; struct xhci_ext_cap { uint32_t cap_id; /* cap_id is used to select the correct struct in the union. */ union { struct xhci_supported_protocol supported_protocol; }; }; /** * Iterates over the xHCI Extended Capabilities List. */ enum cb_err xhci_for_each_ext_cap(const struct device *device, void *context, void (*callback)(void *context, const struct xhci_ext_cap *cap)); /** * Helper method that iterates over only the USB supported capabilities structures in the * xHCI Extended Capabilities List. */ enum cb_err xhci_for_each_supported_usb_cap( const struct device *device, void *context, void (*callback)(void *context, const struct xhci_supported_protocol *data)); void xhci_print_supported_protocol(const struct xhci_supported_protocol *supported_protocol); #endif /* __DEVICE_XHCI_H__ */