104 struct  dmc_command {  struct
108 	struct	dmc_command *qp_next;	/* next command on queue */  argument
158 	struct	dmc_command sc_cmdbuf[NCMDS];
159 	struct	dmc_command *sc_qhead;	/* head of command queue */
160 	struct	dmc_command *sc_qtail;	/* tail of command queue */
161 	struct	dmc_command *sc_qactive;	/* command in progress */
162 	struct	dmc_command *sc_qfreeh;	/* head of list of free cmd buffers */
163 	struct	dmc_command *sc_qfreet;	/* tail of list of free cmd buffers */
199 	if ((tail) == (struct dmc_command *) 0) \
207 	(qp)->qp_next = (struct dmc_command *) 0; \
212 	if ((head) == (struct dmc_command *) 0)\
306 	struct dmc_command *qp;  in dmcinit()
378 		(struct dmc_command *)0;  in dmcinit()
466 	struct dmc_command *qp;  in dmcload()
472 	if ((qp = sc->sc_qfreeh) == (struct dmc_command *)0)  in dmcload()
504 	struct dmc_command *qp;  in dmcrint()
507 	if ((qp = sc->sc_qactive) == (struct dmc_command *) 0) {  in dmcrint()
525 		if ((sc->sc_qactive = sc->sc_qhead) == (struct dmc_command *)0)  in dmcrint()