void
ata_dbdma_dmainit(device_t dev)
{
struct ata_dbdma_channel *sc = device_get_softc(dev);
int error;
error = dbdma_allocate_channel(sc->dbdma_regs, sc->dbdma_offset,
bus_get_dma_tag(dev), 256, &sc->dbdma);
dbdma_set_wait_selector(sc->dbdma,1 << 7, 1 << 7);
dbdma_insert_stop(sc->dbdma,0);
sc->next_dma_slot=1;
sc->sc_ch.dma.start = ata_dbdma_start;
sc->sc_ch.dma.stop = ata_dbdma_stop;
sc->sc_ch.dma.load = ata_dbdma_load;
sc->sc_ch.dma.reset = ata_dbdma_reset;
/*
* DBDMA's field for transfer size is 16 bits. This will overflow
* if we try to do a 64K transfer, so stop short of 64K.
*/
sc->sc_ch.dma.segsize = 126 * DEV_BSIZE;
ata_dmainit(dev);
sc->sc_ch.hw.status = ata_dbdma_status;
mtx_init(&sc->dbdma_mtx, "ATA DBDMA", NULL, MTX_DEF);
}
void
ata_pci_dmainit(device_t dev)
{
struct ata_channel *ch = device_get_softc(dev);
ata_dmainit(dev);
ch->dma.start = ata_pci_dmastart;
ch->dma.stop = ata_pci_dmastop;
ch->dma.reset = ata_pci_dmareset;
}
static void
ata_siiprb_dmainit(device_t dev)
{
struct ata_channel *ch = device_get_softc(dev);
/* note start and stop are not used here */
ch->dma.setprd = ata_siiprb_dmasetprd;
ch->dma.max_address = BUS_SPACE_MAXADDR;
ch->dma.max_iosize = (ATA_SIIPRB_DMA_ENTRIES - 1) * PAGE_SIZE;
ata_dmainit(dev);
}
static int
sata_channel_attach(device_t dev)
{
struct sata_softc *sc;
struct ata_channel *ch;
uint64_t work;
int error, i;
sc = device_get_softc(device_get_parent(dev));
ch = device_get_softc(dev);
if (ch->attached)
return (0);
ch->dev = dev;
ch->unit = device_get_unit(dev);
ch->flags |= ATA_USE_16BIT | ATA_NO_SLAVE | ATA_SATA;
/* Set legacy ATA resources. */
for (i = ATA_DATA; i <= ATA_COMMAND; i++) {
ch->r_io[i].res = sc->sc_mem_res;
ch->r_io[i].offset = SATA_SHADOWR_BASE(ch->unit) + (i << 2);
}
ch->r_io[ATA_CONTROL].res = sc->sc_mem_res;
ch->r_io[ATA_CONTROL].offset = SATA_SHADOWR_CONTROL(ch->unit);
ch->r_io[ATA_IDX_ADDR].res = sc->sc_mem_res;
ata_default_registers(dev);
/* Set SATA resources. */
ch->r_io[ATA_SSTATUS].res = sc->sc_mem_res;
ch->r_io[ATA_SSTATUS].offset = SATA_SATA_SSTATUS(ch->unit);
ch->r_io[ATA_SERROR].res = sc->sc_mem_res;
ch->r_io[ATA_SERROR].offset = SATA_SATA_SERROR(ch->unit);
ch->r_io[ATA_SCONTROL].res = sc->sc_mem_res;
ch->r_io[ATA_SCONTROL].offset = SATA_SATA_SCONTROL(ch->unit);
ata_generic_hw(dev);
ch->hw.begin_transaction = sata_channel_begin_transaction;
ch->hw.end_transaction = sata_channel_end_transaction;
ch->hw.status = sata_channel_status;
/* Set DMA resources */
ata_dmainit(dev);
ch->dma.setprd = sata_channel_dmasetprd;
/* Clear work area */
KASSERT(sc->sc_edma_qlen * (sizeof(struct sata_crqb) +
sizeof(struct sata_crpb)) <= ch->dma.max_iosize,
("insufficient DMA memory for request/response queues.\n"));
bzero(ch->dma.work, sc->sc_edma_qlen * (sizeof(struct sata_crqb) +
sizeof(struct sata_crpb)));
bus_dmamap_sync(ch->dma.work_tag, ch->dma.work_map,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
/* Turn off EDMA engine */
error = sata_edma_ctrl(dev, 0);
if (error) {
ata_dmafini(dev);
return (error);
}
/*
* Initialize EDMA engine:
* - Native Command Queuing off,
* - Non-Queued operation,
* - Host Queue Cache enabled.
*/
SATA_OUTL(sc, SATA_EDMA_CFG(ch->unit), SATA_EDMA_CFG_HQCACHE |
(sc->sc_version == 1) ? SATA_EDMA_CFG_QL128 : 0);
/* Set request queue pointers */
work = ch->dma.work_bus;
SATA_OUTL(sc, SATA_EDMA_REQBAHR(ch->unit), work >> 32);
SATA_OUTL(sc, SATA_EDMA_REQIPR(ch->unit), work & 0xFFFFFFFF);
SATA_OUTL(sc, SATA_EDMA_REQOPR(ch->unit), work & 0xFFFFFFFF);
/* Set response queue pointers */
work += sc->sc_edma_qlen * sizeof(struct sata_crqb);
SATA_OUTL(sc, SATA_EDMA_RESBAHR(ch->unit), work >> 32);
SATA_OUTL(sc, SATA_EDMA_RESIPR(ch->unit), work & 0xFFFFFFFF);
SATA_OUTL(sc, SATA_EDMA_RESOPR(ch->unit), work & 0xFFFFFFFF);
/* Clear any outstanding interrupts */
ATA_IDX_OUTL(ch, ATA_SERROR, ATA_IDX_INL(ch, ATA_SERROR));
SATA_OUTL(sc, SATA_SATA_FISICR(ch->unit), 0);
SATA_OUTL(sc, SATA_EDMA_IECR(ch->unit), 0);
SATA_OUTL(sc, SATA_ICR,
~(SATA_ICR_DEV(ch->unit) | SATA_ICR_DMADONE(ch->unit)));
/* Umask channel interrupts */
SATA_OUTL(sc, SATA_EDMA_IEMR(ch->unit), 0xFFFFFFFF);
SATA_OUTL(sc, SATA_MIMR, SATA_INL(sc, SATA_MIMR) |
SATA_MICR_DONE(ch->unit) | SATA_MICR_DMADONE(ch->unit) |
SATA_MICR_ERR(ch->unit));
ch->attached = 1;
return (ata_attach(dev));
}
