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- /*
- * mass storage transport protocols and subclasses,
- * from usb mass storage class specification overview rev 1.2
- */
- typedef struct Umsc Umsc;
- typedef struct Ums Ums;
- typedef struct Cbw Cbw; /* command block wrapper */
- typedef struct Csw Csw; /* command status wrapper */
- enum
- {
- Protocbi = 0, /* control/bulk/interrupt; mainly floppies */
- Protocb = 1, /* " with no interrupt; mainly floppies */
- Protobulk = 0x50, /* bulk only */
- Subrbc = 1, /* reduced blk cmds */
- Subatapi = 2, /* cd/dvd using sff-8020i or mmc-2 cmd blks */
- Subqic = 3, /* QIC-157 tapes */
- Subufi = 4, /* floppy */
- Sub8070 = 5, /* removable media, atapi-like */
- Subscsi = 6, /* scsi transparent cmd set */
- Subisd200 = 7, /* ISD200 ATA */
- Subdev = 0xff, /* use device's value */
- Umsreset = 0xFF,
- Getmaxlun = 0xFE,
- MaxIOsize = 256*1024, /* max. I/O size */
- // Maxlun = 256,
- Maxlun = 32,
- CMreset = 1,
- Pcmd = 0,
- Pdata,
- Pstatus,
- CbwLen = 31,
- CbwDataIn = 0x80,
- CbwDataOut = 0x00,
- CswLen = 13,
- CswOk = 0,
- CswFailed = 1,
- CswPhaseErr = 2,
- };
- /* these are 600 bytes each; ScsiReq is not tiny */
- struct Umsc
- {
- ScsiReq;
- uvlong blocks;
- vlong capacity;
- uchar rawcmd[10];
- uchar phase;
- char *inq;
- Ums *ums;
- Usbfs fs;
- };
- struct Ums
- {
- QLock;
- Dev *dev;
- Dev *epin;
- Dev *epout;
- Umsc *lun;
- uchar maxlun;
- int seq;
- int nerrs;
- };
- /*
- * USB transparent SCSI devices
- */
- struct Cbw
- {
- char signature[4]; /* "USBC" */
- long tag;
- long datalen;
- uchar flags;
- uchar lun;
- uchar len;
- char command[16];
- };
- struct Csw
- {
- char signature[4]; /* "USBS" */
- long tag;
- long dataresidue;
- uchar status;
- };
- int diskmain(Dev*, int, char**);
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