163     bzero(ch->dma.slot, sizeof(struct ata_dmaslot) * ATA_DMA_SLOTS);  in ata_dmaalloc()
165 	struct ata_dmaslot *slot = &ch->dma.slot[i];  in ata_dmaalloc()  local
170 			       0, NULL, NULL, &slot->sg_tag)) {  in ata_dmaalloc()
175 	if (bus_dmamem_alloc(slot->sg_tag, (void **)&slot->sg, BUS_DMA_WAITOK,  in ata_dmaalloc()
176 			     &slot->sg_map)) {  in ata_dmaalloc()
181 	if (bus_dmamap_load(slot->sg_tag, slot->sg_map, slot->sg, MAXTABSZ,  in ata_dmaalloc()
186 	slot->sg_bus = dcba.maddr;  in ata_dmaalloc()
193                                BUS_DMA_ALLOCNOW, NULL, NULL, &slot->data_tag)) {  in ata_dmaalloc()
198 	if (bus_dmamap_create(slot->data_tag, 0, &slot->data_map)) {  in ata_dmaalloc()
219 	struct ata_dmaslot *slot = &ch->dma.slot[i];  in ata_dmafree()  local
221 	if (slot->sg_bus) {  in ata_dmafree()
222             bus_dmamap_unload(slot->sg_tag, slot->sg_map);  in ata_dmafree()
223             slot->sg_bus = 0;  in ata_dmafree()
225 	if (slot->sg) {  in ata_dmafree()
226             bus_dmamem_free(slot->sg_tag, slot->sg, slot->sg_map);  in ata_dmafree()
227             slot->sg = NULL;  in ata_dmafree()
229 	if (slot->data_map) {  in ata_dmafree()
230             bus_dmamap_destroy(slot->data_tag, slot->data_map);  in ata_dmafree()
231             slot->data_map = NULL;  in ata_dmafree()
233 	if (slot->sg_tag) {  in ata_dmafree()
234             bus_dma_tag_destroy(slot->sg_tag);  in ata_dmafree()
235             slot->sg_tag = NULL;  in ata_dmafree()
237 	if (slot->data_tag) {  in ata_dmafree()
238             bus_dma_tag_destroy(slot->data_tag);  in ata_dmafree()
239             slot->data_tag = NULL;  in ata_dmafree()
295     /* set our slot. XXX SOS NCQ will change that */  in ata_dmaload()
296     request->dma = &ch->dma.slot[0];  in ata_dmaload()