153 	volatile struct iscp_struct	*iscp;	/* volatile is important */  member
229 	p->iscp = (struct iscp_struct *) iscp_addr;  in check586()
230 	memset((char *)p->iscp,0, sizeof(struct iscp_struct));  in check586()
232 	p->scp->iscp = make24(p->iscp);  in check586()
233 	p->iscp->busy = 1;  in check586()
239 	if(p->iscp->busy) /* i82586 clears 'busy' after successful init */  in check586()
256 	p->iscp	= (struct iscp_struct *) dvma_btov(dev->mem_start);  in alloc586()
257 	p->scb  = (struct scb_struct *)  ((char *)p->iscp + sizeof(struct iscp_struct));  in alloc586()
259 	memset((char *) p->iscp,0,sizeof(struct iscp_struct));  in alloc586()
262 	p->scp->iscp = make24(p->iscp);  in alloc586()
264 	p->iscp->scb_offset = make16(p->scb);  in alloc586()
265 	p->iscp->scb_base = make24(dvma_btov(dev->mem_start));  in alloc586()
267 	p->iscp->busy = 1;  in alloc586()
273 	if(p->iscp->busy)  in alloc586()
430 		int len = ((char *) p->iscp - (char *) ptr - 8) / 6;  in init586()