diff options
Diffstat (limited to 'src/include/device/xhci.h')
-rw-r--r-- | src/include/device/xhci.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/src/include/device/xhci.h b/src/include/device/xhci.h new file mode 100644 index 0000000000..25f950be2e --- /dev/null +++ b/src/include/device/xhci.h @@ -0,0 +1,57 @@ +/* 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)); + +void xhci_print_supported_protocol(const struct xhci_supported_protocol *supported_protocol); + +#endif /* __DEVICE_XHCI_H__ */ |