dev/ata/ata-dma.c

68     struct ata_channel *ch = device_get_softc(dev);
71     if (ch->dma.alloc == NULL)
72 	ch->dma.alloc = ata_dmaalloc;
73     if (ch->dma.free == NULL)
74 	ch->dma.free = ata_dmafree;
75     if (ch->dma.setprd == NULL)
76 	ch->dma.setprd = ata_dmasetprd;
77     if (ch->dma.load == NULL)
78 	ch->dma.load = ata_dmaload;
79     if (ch->dma.unload == NULL)
80 	ch->dma.unload = ata_dmaunload;
81     if (ch->dma.alignment == 0)
82 	ch->dma.alignment = 2;
83     if (ch->dma.boundary == 0)
84 	ch->dma.boundary = 65536;
85     if (ch->dma.segsize == 0)
86 	ch->dma.segsize = 65536;
87     if (ch->dma.max_iosize == 0)
88 	ch->dma.max_iosize = MIN((ATA_DMA_ENTRIES - 1) * PAGE_SIZE, MAXPHYS);
89     if (ch->dma.max_address == 0)
90 	ch->dma.max_address = BUS_SPACE_MAXADDR_32BIT;
91     if (ch->dma.dma_slots == 0)
92 	ch->dma.dma_slots = 1;
94     if (bus_dma_tag_create(bus_get_dma_tag(dev), ch->dma.alignment, 0,
95 			   ch->dma.max_address, BUS_SPACE_MAXADDR,
96 			   NULL, NULL, ch->dma.max_iosize,
97 			   ATA_DMA_ENTRIES, ch->dma.segsize,
98 			   0, NULL, NULL, &ch->dma.dmatag))
101     if (bus_dma_tag_create(ch->dma.dmatag, PAGE_SIZE, 64 * 1024,
102 			   ch->dma.max_address, BUS_SPACE_MAXADDR,
104 			   0, NULL, NULL, &ch->dma.work_tag))
107     if (bus_dmamem_alloc(ch->dma.work_tag, (void **)&ch->dma.work,
109 			 &ch->dma.work_map))
112     if (bus_dmamap_load(ch->dma.work_tag, ch->dma.work_map, ch->dma.work,
115 	bus_dmamem_free(ch->dma.work_tag, ch->dma.work, ch->dma.work_map);
118     ch->dma.work_bus = dcba.maddr;
129     struct ata_channel *ch = device_get_softc(dev);
131     if (ch->dma.work_bus) {
132 	bus_dmamap_unload(ch->dma.work_tag, ch->dma.work_map);
133 	bus_dmamem_free(ch->dma.work_tag, ch->dma.work, ch->dma.work_map);
134 	ch->dma.work_bus = 0;
135 	ch->dma.work = NULL;
137     if (ch->dma.work_tag) {
138 	bus_dma_tag_destroy(ch->dma.work_tag);
139 	ch->dma.work_tag = NULL;
141     if (ch->dma.dmatag) {
142 	bus_dma_tag_destroy(ch->dma.dmatag);
143 	ch->dma.dmatag = NULL;
159     struct ata_channel *ch = device_get_softc(dev);
164     bzero(ch->dma.slot, sizeof(struct ata_dmaslot) * ATA_DMA_SLOTS);
165     for (i = 0; i < ch->dma.dma_slots; i++) {
166 	struct ata_dmaslot *slot = &ch->dma.slot[i];
168 	if (bus_dma_tag_create(ch->dma.dmatag, PAGE_SIZE, PAGE_SIZE,
169 			       ch->dma.max_address, BUS_SPACE_MAXADDR,
172             device_printf(ch->dev, "FAILURE - create sg_tag\n");
178 	    device_printf(ch->dev, "FAILURE - alloc sg_map\n");
184 	    device_printf(ch->dev, "FAILURE - load sg\n");
189 	if (bus_dma_tag_create(ch->dma.dmatag,
190 			       ch->dma.alignment, ch->dma.boundary,
191                                ch->dma.max_address, BUS_SPACE_MAXADDR,
192                                NULL, NULL, ch->dma.max_iosize,
193                                ATA_DMA_ENTRIES, ch->dma.segsize,
195 	    device_printf(ch->dev, "FAILURE - create data_tag\n");
200 	    device_printf(ch->dev, "FAILURE - create data_map\n");
215     struct ata_channel *ch = device_get_softc(dev);
220 	struct ata_dmaslot *slot = &ch->dma.slot[i];
267     struct ata_channel *ch = device_get_softc(request->parent);
283     if (request->bytecount & (ch->dma.alignment - 1)) {
286 		      request->bytecount, ch->dma.alignment);
289     if (request->bytecount > ch->dma.max_iosize) {
292 		      request->bytecount, ch->dma.max_iosize);
297     request->dma = &ch->dma.slot[0];
307 				ch->dma.setprd, &dspa, BUS_DMA_NOWAIT);
311 				ch->dma.setprd, &dspa, BUS_DMA_NOWAIT);