include/usb/msc_protocol.h

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#ifndef USB_MSC_PROTOCOL_H_INCLUDED
#define USB_MSC_PROTOCOL_H_INCLUDED

#include <types.h>

#define USB_INTERFACE_CLASS_MSC 8

enum usb_msc_interface_subclass {
        USB_MSC_SUBCLASS_RBC            = 0x01,
        USB_MSC_SUBCLASS_ATAPI          = 0x02,
        USB_MSC_SUBCLASS_QIC_157        = 0x03,
        USB_MSC_SUBCLASS_UFI            = 0x04,
        USB_MSC_SUBCLASS_SFF_8070I      = 0x05,
        USB_MSC_SUBCLASS_TRANSPARENT    = 0x06,
};

enum usb_msc_interface_protocol {
        USB_MSC_PROTOCOL_CBI            = 0x00, 
        USB_MSC_PROTOCOL_CBI_ALT        = 0x01, 
        USB_MSC_PROTOCOL_BULK           = 0x50, 
};

enum usb_msc_reqid {
        USB_MSC_REQ_BULK_RESET          = 0xff, 
        USB_MSC_REQ_GET_MAX_LUN         = 0xfe, 
};

struct usb_msc_cbw {
        le32_t  dCBWSignature;          
        le32_t  dCBWTag;                
        le32_t  dCBWDataTransferLength; 
        uint8_t bmCBWFlags;             
        uint8_t bCBWLUN;                
        uint8_t bCBWCBLength;           
        uint8_t CDB[16];                
} __packed;

#define USB_CBW_SIGNATURE       0x43425355      
#define USB_CBW_DIRECTION_IN    (1 << 7)        
#define USB_CBW_LUN_MASK        0x0f            
#define USB_CBW_LEN_MASK        0x1f            


struct usb_msc_csw {
        le32_t  dCSWSignature;          
        le32_t  dCSWTag;                
        le32_t  dCSWDataResidue;        
        uint8_t bCSWStatus;             
} __packed;

#define USB_CSW_SIGNATURE       0x53425355      
#define USB_CSW_STATUS_PASS     0x00            
#define USB_CSW_STATUS_FAIL     0x01            
#define USB_CSW_STATUS_PE       0x02            

#endif /* USB_MSC_PROTOCOL_H_INCLUDED */

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