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- Probe number of IT/IR DMA contexts as specified in OHCI spec.

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This commit is contained in:
Hidetoshi Shimokawa 2003-01-29 15:32:35 +00:00
parent 501901c61d
commit 7054e8482e
1 changed files with 9 additions and 9 deletions
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18
sys/dev/firewire/fwohci.c
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@ -586,15 +586,15 @@ fwohci_init(struct fwohci_softc *sc, device_t dev)
device_printf(dev, "OHCI version %x.%x (ROM=%d)\n",
(reg>>16) & 0xff, reg & 0xff, (reg>>24) & 1);
/* XXX: Available Isochrounous DMA channel probe */
for( i = 0 ; i < 0x20 ; i ++ ){
OWRITE(sc, OHCI_IRCTL(i), OHCI_CNTL_DMA_RUN);
reg = OREAD(sc, OHCI_IRCTL(i));
if(!(reg & OHCI_CNTL_DMA_RUN)) break;
OWRITE(sc, OHCI_ITCTL(i), OHCI_CNTL_DMA_RUN);
reg = OREAD(sc, OHCI_ITCTL(i));
if(!(reg & OHCI_CNTL_DMA_RUN)) break;
}
/* Available Isochrounous DMA channel probe */
OWRITE(sc, OHCI_IT_MASK, 0xffffffff);
OWRITE(sc, OHCI_IR_MASK, 0xffffffff);
reg = OREAD(sc, OHCI_IT_MASK) & OREAD(sc, OHCI_IR_MASK);
OWRITE(sc, OHCI_IT_MASKCLR, 0xffffffff);
OWRITE(sc, OHCI_IR_MASKCLR, 0xffffffff);
for (i = 0; i < 0x20; i++)
if ((reg & (1 << i)) == 0)
break;
sc->fc.nisodma = i;
device_printf(dev, "No. of Isochronous channel is %d.\n", i);