139 extern void scsi_finish_command(struct scsi_cmnd *cmd);
145 extern int scsi_init_io(struct scsi_cmnd *cmd, gfp_t gfp_mask);
146 extern void scsi_release_buffers(struct scsi_cmnd *cmd);
148 extern int scsi_dma_map(struct scsi_cmnd *cmd);
149 extern void scsi_dma_unmap(struct scsi_cmnd *cmd);
152 void scsi_free_command(gfp_t gfp_mask, struct scsi_cmnd *cmd);
154 static inline unsigned scsi_sg_count(struct scsi_cmnd *cmd)  in scsi_sg_count()  argument
156 	return cmd->sdb.table.nents;  in scsi_sg_count()
159 static inline struct scatterlist *scsi_sglist(struct scsi_cmnd *cmd)  in scsi_sglist()  argument
161 	return cmd->sdb.table.sgl;  in scsi_sglist()
164 static inline unsigned scsi_bufflen(struct scsi_cmnd *cmd)  in scsi_bufflen()  argument
166 	return cmd->sdb.length;  in scsi_bufflen()
169 static inline void scsi_set_resid(struct scsi_cmnd *cmd, int resid)  in scsi_set_resid()  argument
171 	cmd->sdb.resid = resid;  in scsi_set_resid()
174 static inline int scsi_get_resid(struct scsi_cmnd *cmd)  in scsi_get_resid()  argument
176 	return cmd->sdb.resid;  in scsi_get_resid()
179 #define scsi_for_each_sg(cmd, sg, nseg, __i)			\  argument
180 	for_each_sg(scsi_sglist(cmd), sg, nseg, __i)
182 static inline int scsi_bidi_cmnd(struct scsi_cmnd *cmd)  in scsi_bidi_cmnd()  argument
184 	return blk_bidi_rq(cmd->request) &&  in scsi_bidi_cmnd()
185 		(cmd->request->next_rq->special != NULL);  in scsi_bidi_cmnd()
188 static inline struct scsi_data_buffer *scsi_in(struct scsi_cmnd *cmd)  in scsi_in()  argument
190 	return scsi_bidi_cmnd(cmd) ?  in scsi_in()
191 		cmd->request->next_rq->special : &cmd->sdb;  in scsi_in()
194 static inline struct scsi_data_buffer *scsi_out(struct scsi_cmnd *cmd)  in scsi_out()  argument
196 	return &cmd->sdb;  in scsi_out()
199 static inline int scsi_sg_copy_from_buffer(struct scsi_cmnd *cmd,  in scsi_sg_copy_from_buffer()  argument
202 	return sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd),  in scsi_sg_copy_from_buffer()
206 static inline int scsi_sg_copy_to_buffer(struct scsi_cmnd *cmd,  in scsi_sg_copy_to_buffer()  argument
209 	return sg_copy_to_buffer(scsi_sglist(cmd), scsi_sg_count(cmd),  in scsi_sg_copy_to_buffer()
272 static inline unsigned scsi_prot_sg_count(struct scsi_cmnd *cmd)  in scsi_prot_sg_count()  argument
274 	return cmd->prot_sdb ? cmd->prot_sdb->table.nents : 0;  in scsi_prot_sg_count()
277 static inline struct scatterlist *scsi_prot_sglist(struct scsi_cmnd *cmd)  in scsi_prot_sglist()  argument
279 	return cmd->prot_sdb ? cmd->prot_sdb->table.sgl : NULL;  in scsi_prot_sglist()
282 static inline struct scsi_data_buffer *scsi_prot(struct scsi_cmnd *cmd)  in scsi_prot()  argument
284 	return cmd->prot_sdb;  in scsi_prot()
287 #define scsi_for_each_prot_sg(cmd, sg, nseg, __i)		\  argument
288 	for_each_sg(scsi_prot_sglist(cmd), sg, nseg, __i)
290 static inline void set_msg_byte(struct scsi_cmnd *cmd, char status)  in set_msg_byte()  argument
292 	cmd->result |= status << 8;  in set_msg_byte()
295 static inline void set_host_byte(struct scsi_cmnd *cmd, char status)  in set_host_byte()  argument
297 	cmd->result |= status << 16;  in set_host_byte()
300 static inline void set_driver_byte(struct scsi_cmnd *cmd, char status)  in set_driver_byte()  argument
302 	cmd->result |= status << 24;  in set_driver_byte()