drivers/bus/SCSI.h

21 	  because of generalized data structure
26 	Something about requests involving data transfer: you can either specify
27 	the virtual address in <data> of CCB (in which case it must be continuous),
29 	<sg_list>/<sg_count>. If <sg_list> is non-Null, <data> is ignored.
32 	to contain physical addresses. For obvious reason, the data buffer specified
33 	by <sg_list> must be locked, but <data> doesn't need to be.
38 	<data> or <sg_list>, in the latter <sg_list> only.
40 	The SCSI bus manager takes care that the controller can access the data
49 	<data> is a safe bet.
101 #define SCSI_MAX_SENSE_SIZE	64	// max size of sense data
102 #define SCSI_SIM_PRIV	1536	// SIM private data; this may be a bit much but
127 	uint8		cdb[SCSI_MAX_CDB_SIZE];  // command data block
132 	uchar		*data;				// pointer to data
135 	uint32		data_length;		// length of data
136 	int32		data_resid;			// data transfer residual length: 2's comp
139 	uchar		sense[SCSI_MAX_SENSE_SIZE]; // autosense data
144 	bool		buffered : 1;		// data is buffered to make it DMA safe
152 	// original data before command emulation was applied
159 	// private SIM data
161 	uchar		sim_priv[SCSI_SIM_PRIV];	/* SIM private data area */
205 #define SCSI_AUTOSNS_VALID		0x80	/* Autosense data valid for target */
215 #define SCSI_DIR_NONE			0x000000C0	/* Data direction (11: no data) */
220 #define SCSI_DMA_SAFE			0x00000008	// set if data buffer is DMA approved
223 #define SCSI_INITIATE_SYNC		0x00004000	/* Attempt Sync data xfer, and SDTR */
256 	uint32		sim_priv;				/* Size of SIM private data area */
278 // device inquiry data (raw scsi_res_inquiry)
313 	// you don't need to provide a S/G list nor have to lock data