136 #define HOSTDATA(host) ((struct aha1542_hostdata *) &host->hostdata)  macro
410 	mb = HOSTDATA(shost)->mb;  in aha1542_intr_handle()
411 	ccb = HOSTDATA(shost)->ccb;  in aha1542_intr_handle()
453 		mbi = HOSTDATA(shost)->aha1542_last_mbi_used + 1;  in aha1542_intr_handle()
463 		} while (mbi != HOSTDATA(shost)->aha1542_last_mbi_used);  in aha1542_intr_handle()
480 		HOSTDATA(shost)->aha1542_last_mbi_used = mbi;  in aha1542_intr_handle()
498 		SCtmp = HOSTDATA(shost)->SCint[mbo];  in aha1542_intr_handle()
551 		HOSTDATA(shost)->SCint[mbo] = NULL;	/* This effectively frees up the mailbox slot, as  in aha1542_intr_handle()
573 	mb = HOSTDATA(SCpnt->device->host)->mb;  in aha1542_queuecommand_lck()
574 	ccb = HOSTDATA(SCpnt->device->host)->ccb;  in aha1542_queuecommand_lck()
618 	mbo = HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used + 1;  in aha1542_queuecommand_lck()
623 		if (mb[mbo].status == 0 && HOSTDATA(SCpnt->device->host)->SCint[mbo] == NULL)  in aha1542_queuecommand_lck()
628 	} while (mbo != HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used);  in aha1542_queuecommand_lck()
630 	if (mb[mbo].status || HOSTDATA(SCpnt->device->host)->SCint[mbo])  in aha1542_queuecommand_lck()
633 …HOSTDATA(SCpnt->device->host)->SCint[mbo] = SCpnt;	/* This will effectively prevent someone else f…  in aha1542_queuecommand_lck()
636 	HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used = mbo;  in aha1542_queuecommand_lck()
670 			HOSTDATA(SCpnt->device->host)->SCint[mbo] = NULL;  in aha1542_queuecommand_lck()
729 	mb = HOSTDATA(shpnt)->mb;  in DEF_SCSI_QCMD()
730 	ccb = HOSTDATA(shpnt)->ccb;  in DEF_SCSI_QCMD()
1133 			HOSTDATA(shpnt)->bios_translation = trans;  in aha1542_detect()
1136 			HOSTDATA(shpnt)->aha1542_last_mbi_used = (2 * AHA1542_MAILBOXES - 1);  in aha1542_detect()
1137 			HOSTDATA(shpnt)->aha1542_last_mbo_used = (AHA1542_MAILBOXES - 1);  in aha1542_detect()
1138 			memset(HOSTDATA(shpnt)->SCint, 0, sizeof(HOSTDATA(shpnt)->SCint));  in aha1542_detect()
1206 		if (HOSTDATA(shost)->SCint[i] &&  in aha1542_restart()
1207 		    !(HOSTDATA(shost)->SCint[i]->device->soft_reset)) {  in aha1542_restart()
1209 			HOSTDATA(shost)->mb[i].status = 1;	/* Indicate ready to restart... */  in aha1542_restart()
1236 	ccb = HOSTDATA(SCpnt->device->host)->ccb;  in aha1542_dev_reset()
1237 	mb = HOSTDATA(SCpnt->device->host)->mb;  in aha1542_dev_reset()
1240 	mbo = HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used + 1;  in aha1542_dev_reset()
1245 		if (mb[mbo].status == 0 && HOSTDATA(SCpnt->device->host)->SCint[mbo] == NULL)  in aha1542_dev_reset()
1250 	} while (mbo != HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used);  in aha1542_dev_reset()
1252 	if (mb[mbo].status || HOSTDATA(SCpnt->device->host)->SCint[mbo])  in aha1542_dev_reset()
1255 	HOSTDATA(SCpnt->device->host)->SCint[mbo] = SCpnt;	/* This will effectively  in aha1542_dev_reset()
1259 	HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used = mbo;  in aha1542_dev_reset()
1302 		if (HOSTDATA(SCpnt->host)->SCint[i] &&  in aha1542_dev_reset()
1303 		    HOSTDATA(SCpnt->host)->SCint[i]->target == SCpnt->target) {  in aha1542_dev_reset()
1305 			SCtmp = HOSTDATA(SCpnt->host)->SCint[i];  in aha1542_dev_reset()
1308 			HOSTDATA(SCpnt->host)->SCint[i] = NULL;  in aha1542_dev_reset()
1309 			HOSTDATA(SCpnt->host)->mb[i].status = 0;  in aha1542_dev_reset()
1353 		if (HOSTDATA(SCpnt->device->host)->SCint[i] != NULL) {  in aha1542_bus_reset()
1355 			SCtmp = HOSTDATA(SCpnt->device->host)->SCint[i];  in aha1542_bus_reset()
1369 			HOSTDATA(SCpnt->device->host)->SCint[i] = NULL;  in aha1542_bus_reset()
1370 			HOSTDATA(SCpnt->device->host)->mb[i].status = 0;  in aha1542_bus_reset()
1422 		if (HOSTDATA(SCpnt->device->host)->SCint[i] != NULL) {  in aha1542_host_reset()
1424 			SCtmp = HOSTDATA(SCpnt->device->host)->SCint[i];  in aha1542_host_reset()
1437 			HOSTDATA(SCpnt->device->host)->SCint[i] = NULL;  in aha1542_host_reset()
1438 			HOSTDATA(SCpnt->device->host)->mb[i].status = 0;  in aha1542_host_reset()
1468 	mb = HOSTDATA(SCpnt->host)->mb;
1469 	mbi = HOSTDATA(SCpnt->host)->aha1542_last_mbi_used + 1;
1479 	} while (mbi != HOSTDATA(SCpnt->host)->aha1542_last_mbi_used);
1492 		if (HOSTDATA(SCpnt->host)->SCint[i]) {
1493 			if (HOSTDATA(SCpnt->host)->SCint[i] == SCpnt) {
1498 				if (HOSTDATA(SCpnt->host)->mb[i].status) {
1514 		if (SCpnt == HOSTDATA(SCpnt->host)->SCint[mbo]) {
1575 			if (HOSTDATA(SCpnt->host)->SCint[i] != NULL) {
1577 				SCtmp = HOSTDATA(SCpnt->host)->SCint[i];
1584 				HOSTDATA(SCpnt->host)->SCint[i] = NULL;
1585 				HOSTDATA(SCpnt->host)->mb[i].status = 0;
1603 			if (HOSTDATA(SCpnt->host)->SCint[i] == SCpnt) {
1604 				HOSTDATA(SCpnt->host)->ccb[i].op = 0x81;	/* BUS DEVICE RESET */
1618 					if (HOSTDATA(SCpnt->host)->SCint[i] &&
1619 					    HOSTDATA(SCpnt->host)->SCint[i]->target == SCpnt->target) {
1621 						SCtmp = HOSTDATA(SCpnt->host)->SCint[i];
1628 						HOSTDATA(SCpnt->host)->SCint[i] = NULL;
1629 						HOSTDATA(SCpnt->host)->mb[i].status = 0;
1647 	translation_algorithm = HOSTDATA(sdev->host)->bios_translation;  in aha1542_biosparam()