67     struct ata_channel *ch = device_get_softc(dev);  in ata_dmainit()  local
70     if (ch->dma.alloc == NULL)  in ata_dmainit()
71 	ch->dma.alloc = ata_dmaalloc;  in ata_dmainit()
72     if (ch->dma.free == NULL)  in ata_dmainit()
73 	ch->dma.free = ata_dmafree;  in ata_dmainit()
74     if (ch->dma.setprd == NULL)  in ata_dmainit()
75 	ch->dma.setprd = ata_dmasetprd;  in ata_dmainit()
76     if (ch->dma.load == NULL)  in ata_dmainit()
77 	ch->dma.load = ata_dmaload;  in ata_dmainit()
78     if (ch->dma.unload == NULL)  in ata_dmainit()
79 	ch->dma.unload = ata_dmaunload;  in ata_dmainit()
80     if (ch->dma.alignment == 0)  in ata_dmainit()
81 	ch->dma.alignment = 2;  in ata_dmainit()
82     if (ch->dma.boundary == 0)  in ata_dmainit()
83 	ch->dma.boundary = 65536;  in ata_dmainit()
84     if (ch->dma.segsize == 0)  in ata_dmainit()
85 	ch->dma.segsize = 65536;  in ata_dmainit()
86     if (ch->dma.max_iosize == 0)  in ata_dmainit()
87 	ch->dma.max_iosize = (ATA_DMA_ENTRIES - 1) * PAGE_SIZE;  in ata_dmainit()
88     if (ch->dma.max_address == 0)  in ata_dmainit()
89 	ch->dma.max_address = BUS_SPACE_MAXADDR_32BIT;  in ata_dmainit()
90     if (ch->dma.dma_slots == 0)  in ata_dmainit()
91 	ch->dma.dma_slots = 1;  in ata_dmainit()
93     if (bus_dma_tag_create(bus_get_dma_tag(dev), ch->dma.alignment, 0,  in ata_dmainit()
94 			   ch->dma.max_address, BUS_SPACE_MAXADDR,  in ata_dmainit()
95 			   NULL, NULL, ch->dma.max_iosize,  in ata_dmainit()
96 			   ATA_DMA_ENTRIES, ch->dma.segsize,  in ata_dmainit()
97 			   0, NULL, NULL, &ch->dma.dmatag))  in ata_dmainit()
100     if (bus_dma_tag_create(ch->dma.dmatag, PAGE_SIZE, 64 * 1024,  in ata_dmainit()
101 			   ch->dma.max_address, BUS_SPACE_MAXADDR,  in ata_dmainit()
103 			   0, NULL, NULL, &ch->dma.work_tag))  in ata_dmainit()
106     if (bus_dmamem_alloc(ch->dma.work_tag, (void **)&ch->dma.work,  in ata_dmainit()
108 			 &ch->dma.work_map))  in ata_dmainit()
111     if (bus_dmamap_load(ch->dma.work_tag, ch->dma.work_map, ch->dma.work,  in ata_dmainit()
114 	bus_dmamem_free(ch->dma.work_tag, ch->dma.work, ch->dma.work_map);  in ata_dmainit()
117     ch->dma.work_bus = dcba.maddr;  in ata_dmainit()
128     struct ata_channel *ch = device_get_softc(dev);  in ata_dmafini()  local
130     if (ch->dma.work_bus) {  in ata_dmafini()
131 	bus_dmamap_unload(ch->dma.work_tag, ch->dma.work_map);  in ata_dmafini()
132 	bus_dmamem_free(ch->dma.work_tag, ch->dma.work, ch->dma.work_map);  in ata_dmafini()
133 	ch->dma.work_bus = 0;  in ata_dmafini()
134 	ch->dma.work = NULL;  in ata_dmafini()
136     if (ch->dma.work_tag) {  in ata_dmafini()
137 	bus_dma_tag_destroy(ch->dma.work_tag);  in ata_dmafini()
138 	ch->dma.work_tag = NULL;  in ata_dmafini()
140     if (ch->dma.dmatag) {  in ata_dmafini()
141 	bus_dma_tag_destroy(ch->dma.dmatag);  in ata_dmafini()
142 	ch->dma.dmatag = NULL;  in ata_dmafini()
158     struct ata_channel *ch = device_get_softc(dev);  in ata_dmaalloc()  local
163     bzero(ch->dma.slot, sizeof(struct ata_dmaslot) * ATA_DMA_SLOTS);  in ata_dmaalloc()
164     for (i = 0; i < ch->dma.dma_slots; i++) {  in ata_dmaalloc()
165 	struct ata_dmaslot *slot = &ch->dma.slot[i];  in ata_dmaalloc()
167 	if (bus_dma_tag_create(ch->dma.dmatag, PAGE_SIZE, PAGE_SIZE,  in ata_dmaalloc()
168 			       ch->dma.max_address, BUS_SPACE_MAXADDR,  in ata_dmaalloc()
171             device_printf(ch->dev, "FAILURE - create sg_tag\n");  in ata_dmaalloc()
177 	    device_printf(ch->dev, "FAILURE - alloc sg_map\n");  in ata_dmaalloc()
183 	    device_printf(ch->dev, "FAILURE - load sg\n");  in ata_dmaalloc()
188 	if (bus_dma_tag_create(ch->dma.dmatag,  in ata_dmaalloc()
189 			       ch->dma.alignment, ch->dma.boundary,  in ata_dmaalloc()
190                                ch->dma.max_address, BUS_SPACE_MAXADDR,  in ata_dmaalloc()
191                                NULL, NULL, ch->dma.max_iosize,  in ata_dmaalloc()
192                                ATA_DMA_ENTRIES, ch->dma.segsize,  in ata_dmaalloc()
194 	    device_printf(ch->dev, "FAILURE - create data_tag\n");  in ata_dmaalloc()
199 	    device_printf(ch->dev, "FAILURE - create data_map\n");  in ata_dmaalloc()
214     struct ata_channel *ch = device_get_softc(dev);  in ata_dmafree()  local
219 	struct ata_dmaslot *slot = &ch->dma.slot[i];  in ata_dmafree()
266     struct ata_channel *ch = device_get_softc(request->parent);  in ata_dmaload()  local
282     if (request->bytecount & (ch->dma.alignment - 1)) {  in ata_dmaload()
285 		      request->bytecount, ch->dma.alignment);  in ata_dmaload()
288     if (request->bytecount > ch->dma.max_iosize) {  in ata_dmaload()
291 		      request->bytecount, ch->dma.max_iosize);  in ata_dmaload()
296     request->dma = &ch->dma.slot[0];  in ata_dmaload()
306 				ch->dma.setprd, &dspa, BUS_DMA_NOWAIT);  in ata_dmaload()
310 				ch->dma.setprd, &dspa, BUS_DMA_NOWAIT);  in ata_dmaload()