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/* 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__ */
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