static void
ata_dmaalloc(device_t dev)
{
struct ata_channel *ch = device_get_softc(dev);
struct ata_dc_cb_args dcba;
int i;
/* alloc and setup needed dma slots */
bzero(ch->dma.slot, sizeof(struct ata_dmaslot) * ATA_DMA_SLOTS);
for (i = 0; i < ch->dma.dma_slots; i++) {
struct ata_dmaslot *slot = &ch->dma.slot[i];
if (bus_dma_tag_create(ch->dma.dmatag, PAGE_SIZE, PAGE_SIZE,
ch->dma.max_address, BUS_SPACE_MAXADDR,
NULL, NULL, PAGE_SIZE, 1, PAGE_SIZE,
0, NULL, NULL, &slot->sg_tag)) {
device_printf(ch->dev, "FAILURE - create sg_tag\n");
goto error;
}
if (bus_dmamem_alloc(slot->sg_tag, (void **)&slot->sg, BUS_DMA_WAITOK,
&slot->sg_map)) {
device_printf(ch->dev, "FAILURE - alloc sg_map\n");
goto error;
}
if (bus_dmamap_load(slot->sg_tag, slot->sg_map, slot->sg, MAXTABSZ,
ata_dmasetupc_cb, &dcba, 0) || dcba.error) {
device_printf(ch->dev, "FAILURE - load sg\n");
goto error;
}
slot->sg_bus = dcba.maddr;
if (bus_dma_tag_create(ch->dma.dmatag,
ch->dma.alignment, ch->dma.boundary,
ch->dma.max_address, BUS_SPACE_MAXADDR,
NULL, NULL, ch->dma.max_iosize,
ATA_DMA_ENTRIES, ch->dma.segsize,
BUS_DMA_ALLOCNOW, NULL, NULL, &slot->data_tag)) {
device_printf(ch->dev, "FAILURE - create data_tag\n");
goto error;
}
if (bus_dmamap_create(slot->data_tag, 0, &slot->data_map)) {
device_printf(ch->dev, "FAILURE - create data_map\n");
goto error;
}
}
return;
error:
device_printf(dev, "WARNING - DMA allocation failed, disabling DMA\n");
ata_dmafree(dev);
}
static void
ata_dmaalloc(device_t dev)
{
struct ata_channel *ch = device_get_softc(dev);
struct ata_dc_cb_args ccba;
if (bus_dma_tag_create(NULL, ch->dma->alignment, 0,
ch->dma->max_address, BUS_SPACE_MAXADDR,
NULL, NULL, ch->dma->max_iosize,
ATA_DMA_ENTRIES, ch->dma->segsize,
0, &ch->dma->dmatag))
goto error;
if (bus_dma_tag_create(ch->dma->dmatag, PAGE_SIZE, PAGE_SIZE,
ch->dma->max_address, BUS_SPACE_MAXADDR,
NULL, NULL, MAXTABSZ, 1, MAXTABSZ,
0, &ch->dma->sg_tag))
goto error;
if (bus_dma_tag_create(ch->dma->dmatag,ch->dma->alignment,ch->dma->boundary,
ch->dma->max_address, BUS_SPACE_MAXADDR,
NULL, NULL, ch->dma->max_iosize,
ATA_DMA_ENTRIES, ch->dma->segsize,
0, &ch->dma->data_tag))
goto error;
if (bus_dmamem_alloc(ch->dma->sg_tag, (void **)&ch->dma->sg, 0,
&ch->dma->sg_map))
goto error;
if (bus_dmamap_load(ch->dma->sg_tag, ch->dma->sg_map, ch->dma->sg,
MAXTABSZ, ata_dmasetupc_cb, &ccba, 0) || ccba.error) {
bus_dmamem_free(ch->dma->sg_tag, ch->dma->sg, ch->dma->sg_map);
goto error;
}
ch->dma->sg_bus = ccba.maddr;
if (bus_dmamap_create(ch->dma->data_tag, 0, &ch->dma->data_map))
goto error;
if (bus_dma_tag_create(ch->dma->dmatag, PAGE_SIZE, 64 * 1024,
ch->dma->max_address, BUS_SPACE_MAXADDR,
NULL, NULL, MAXWSPCSZ, 1, MAXWSPCSZ,
0, &ch->dma->work_tag))
goto error;
if (bus_dmamem_alloc(ch->dma->work_tag, (void *)&ch->dma->work, 0,
(void *)&ch->dma->work_map))
goto error;
if (bus_dmamap_load(ch->dma->work_tag, ch->dma->work_map,ch->dma->work,
MAXWSPCSZ, ata_dmasetupc_cb, &ccba, 0) || ccba.error) {
bus_dmamem_free(ch->dma->work_tag,ch->dma->work, ch->dma->work_map);
goto error;
}
ch->dma->work_bus = ccba.maddr;
return;
error:
device_printf(dev, "WARNING - DMA allocation failed, disabling DMA\n");
ata_dmafree(dev);
kfree(ch->dma, M_ATADMA);
ch->dma = NULL;
}