#pragma once #include #include // xhci Capability Registers offset #define XHCI_CAPS_CAPLENGTH 0x00 // Cap 寄存器组的长度 #define XHCI_CAPS_RESERVED 0x01 #define XHCI_CAPS_HCIVERSION 0x02 // 接口版本号 #define XHCI_CAPS_HCSPARAMS1 0x04 #define XHCI_CAPS_HCSPARAMS2 0x08 #define XHCI_CAPS_HCSPARAMS3 0x0c #define XHCI_CAPS_HCCPARAMS1 0x10 // capability params 1 #define XHCI_CAPS_DBOFF 0x14 // Doorbell offset #define XHCI_CAPS_RTSOFF 0x18 // Runtime register space offset #define XHCI_CAPS_HCCPARAMS2 0x1c // capability params 2 struct xhci_caps_HCSPARAMS1_reg_t { unsigned max_slots : 8; // 最大插槽数 unsigned max_intrs : 11; // 最大中断数 unsigned reserved : 5; unsigned max_ports : 8; // 最大端口数 }__attribute__((packed)); /** * @brief xhci端口信息 * */ struct xhci_port_info_t { uint8_t flags; // port flags uint8_t paired_port_num; // 与当前端口所配对的另一个端口(相同物理接口的不同速度的port) uint8_t offset; // offset of this port within this protocal uint8_t reserved; } __attribute__((packed)); struct xhci_controller_t { struct pci_device_structure_general_device_t *pci_dev_hdr; // 指向pci header结构体的指针 int controller_id; // 操作系统给controller的编号 int vbase; // 虚拟地址base(bar0映射到的虚拟地址) struct xhci_port_info_t *ports; // 指向端口信息数组的指针 }; /** * @brief 初始化xhci控制器 * * @param header 指定控制器的pci device头部 */ void xhci_init(struct pci_device_structure_general_device_t *header);