33c33
< * $FreeBSD: head/sys/dev/aic7xxx/ahc_pci.c 71717 2001-01-27 20:54:24Z gibbs $
---
> * $FreeBSD: head/sys/dev/aic7xxx/ahc_pci.c 74094 2001-03-11 06:34:17Z gibbs $
215a216,250
>
> void
> ahc_power_state_change(struct ahc_softc *ahc, ahc_power_state new_state)
> {
> uint32_t cap;
> u_int cap_offset;
>
> /*
> * Traverse the capability list looking for
> * the power management capability.
> */
> cap = 0;
> cap_offset = ahc_pci_read_config(ahc->dev_softc,
> PCIR_CAP_PTR, /*bytes*/1);
> while (cap_offset != 0) {
>
> cap = ahc_pci_read_config(ahc->dev_softc,
> cap_offset, /*bytes*/4);
> if ((cap & 0xFF) == 1
> && ((cap >> 16) & 0x3) > 0) {
> uint32_t pm_control;
>
> pm_control = ahc_pci_read_config(ahc->dev_softc,
> cap_offset + 4,
> /*bytes*/4);
> pm_control &= ~0x3;
> pm_control |= new_state;
> ahc_pci_write_config(ahc->dev_softc,
> cap_offset + 4,
> pm_control, /*bytes*/2);
> break;
> }
> cap_offset = (cap >> 8) & 0xFF;
> }
> }