| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| |
| #ifndef __DEVICE_XHCI_H__ |
| #define __DEVICE_XHCI_H__ |
| |
| #include <types.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 |
| |
| /* Status flags */ |
| /* Wake on disconnect enable */ |
| #define XHCI_STATUS_WDE BIT(26) |
| /* Wake on connect enable */ |
| #define XHCI_STATUS_WCE BIT(25) |
| /* Port link status change */ |
| #define XHCI_STATUS_PLC BIT(22) |
| /* Connect status change */ |
| #define XHCI_STATUS_CSC BIT(17) |
| /* Port link status */ |
| #define XHCI_STATUS_PLS_SHIFT 5 |
| #define XHCI_STATUS_PLS_MASK (0xf << XHCI_STATUS_PLS_SHIFT) |
| #define XHCI_STATUS_PLS_RESUME (15 << XHCI_STATUS_PLS_SHIFT) |
| |
| static inline bool xhci_portsc_csc(uint32_t port_status) |
| { |
| return port_status & XHCI_STATUS_CSC; |
| } |
| |
| static inline bool xhci_portsc_wake_capable(uint32_t port_status) |
| { |
| return (port_status & XHCI_STATUS_WCE) | |
| (port_status & XHCI_STATUS_WDE); |
| } |
| |
| static inline bool xhci_portsc_plc(uint32_t port_status) |
| { |
| return port_status & XHCI_STATUS_PLC; |
| } |
| |
| static inline bool xhci_portsc_resume(uint32_t port_status) |
| { |
| return (port_status & XHCI_STATUS_PLS_MASK) == XHCI_STATUS_PLS_RESUME; |
| } |
| |
| |
| 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__ */ |