|  | @@ -1,9 +1,52 @@
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				|  |  |  #pragma once
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				|  |  |  #include <driver/usb/usb.h>
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				|  |  | +#include <driver/pci/pci.h>
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				|  |  | +
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				|  |  | +// xhci Capability Registers offset
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				|  |  | +#define XHCI_CAPS_CAPLENGTH 0x00 // Cap 寄存器组的长度
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				|  |  | +#define XHCI_CAPS_RESERVED 0x01
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				|  |  | +#define XHCI_CAPS_HCIVERSION 0x02 // 接口版本号
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				|  |  | +#define XHCI_CAPS_HCSPARAMS1 0x04
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				|  |  | +#define XHCI_CAPS_HCSPARAMS2 0x08
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				|  |  | +#define XHCI_CAPS_HCSPARAMS3 0x0c
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				|  |  | +#define XHCI_CAPS_HCCPARAMS1 0x10 // capability params 1
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				|  |  | +#define XHCI_CAPS_DBOFF 0x14      // Doorbell offset
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				|  |  | +#define XHCI_CAPS_RTSOFF 0x18     // Runtime register space offset
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				|  |  | +#define XHCI_CAPS_HCCPARAMS2 0x1c // capability params 2
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				|  |  | +
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				|  |  | +
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				|  |  | +struct xhci_caps_HCSPARAMS1_reg_t
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				|  |  | +{
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				|  |  | +    unsigned max_slots : 8;  // 最大插槽数
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				|  |  | +    unsigned max_intrs : 11; // 最大中断数
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				|  |  | +    unsigned reserved : 5;
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				|  |  | +    unsigned max_ports : 8; // 最大端口数
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				|  |  | +}__attribute__((packed));
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				|  |  | +
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				|  |  | +
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				|  |  | +/**
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				|  |  | + * @brief xhci端口信息
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				|  |  | + *
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				|  |  | + */
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				|  |  | +struct xhci_port_info_t
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				|  |  | +{
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				|  |  | +    uint8_t flags;           // port flags
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				|  |  | +    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)
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				|  |  | +    uint8_t offset;          // offset of this port within this protocal
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				|  |  | +    uint8_t reserved;
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				|  |  | +} __attribute__((packed));
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				|  |  | +
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				|  |  | +struct xhci_controller_t
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				|  |  | +{
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				|  |  | +    struct pci_device_structure_general_device_t *pci_dev_hdr; // 指向pci header结构体的指针
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				|  |  | +    int controller_id;                                         // 操作系统给controller的编号
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				|  |  | +    int vbase;                                                 // 虚拟地址base(bar0映射到的虚拟地址)
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				|  |  | +    struct xhci_port_info_t *ports;                            // 指向端口信息数组的指针
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				|  |  | +};
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				|  |  |  
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				|  |  |  /**
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				|  |  |   * @brief 初始化xhci控制器
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				|  |  | - * 
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				|  |  | + *
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				|  |  |   * @param header 指定控制器的pci device头部
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				|  |  |   */
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				|  |  | -void xhci_init(struct pci_device_structure_header_t *header);
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				|  |  | +void xhci_init(struct pci_device_structure_general_device_t *header);
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