diff options
Diffstat (limited to 'sys/dev/pci/pci.c')
| -rw-r--r-- | sys/dev/pci/pci.c | 30 |
1 files changed, 16 insertions, 14 deletions
diff --git a/sys/dev/pci/pci.c b/sys/dev/pci/pci.c index 12af24d0172..c073ac705f7 100644 --- a/sys/dev/pci/pci.c +++ b/sys/dev/pci/pci.c @@ -1,4 +1,4 @@ -/* $OpenBSD: pci.c,v 1.87 2010/12/04 17:08:20 miod Exp $ */ +/* $OpenBSD: pci.c,v 1.88 2010/12/30 00:58:22 kettenis Exp $ */ /* $NetBSD: pci.c,v 1.31 1997/06/06 23:48:04 thorpej Exp $ */ /* @@ -215,7 +215,7 @@ void pci_suspend(struct pci_softc *sc) { struct pci_dev *pd; - pcireg_t bhlc, csr; + pcireg_t bhlc; int i; LIST_FOREACH(pd, &sc->sc_devs, pd_next) { @@ -240,18 +240,7 @@ pci_suspend(struct pci_softc *sc) PCI_INTERRUPT_REG); if (pci_dopm) { - /* - * Place the device into D3. The PCI Power - * Management spec says we should disable I/O - * and memory space as well as bus mastering - * before we do so. - */ - csr = pd->pd_csr; - csr &= ~PCI_COMMAND_IO_ENABLE; - csr &= ~PCI_COMMAND_MEM_ENABLE; - csr &= ~PCI_COMMAND_MASTER_ENABLE; - pci_conf_write(sc->sc_pc, pd->pd_tag, - PCI_COMMAND_STATUS_REG, csr); + /* Place the device into D3. */ pd->pd_pmcsr_state = pci_get_powerstate(sc->sc_pc, pd->pd_tag); pci_set_powerstate(sc->sc_pc, pd->pd_tag, @@ -567,6 +556,19 @@ pci_set_powerstate(pci_chipset_tag_t pc, pcitag_t tag, int state) int offset; if (pci_get_capability(pc, tag, PCI_CAP_PWRMGMT, &offset, 0)) { + if (state == PCI_PMCSR_STATE_D3) { + /* + * The PCI Power Management spec says we + * should disable I/O and memory space as well + * as bus mastering before we place the device + * into D3. + */ + reg = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG); + reg &= ~PCI_COMMAND_IO_ENABLE; + reg &= ~PCI_COMMAND_MEM_ENABLE; + reg &= ~PCI_COMMAND_MASTER_ENABLE; + pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, reg); + } reg = pci_conf_read(pc, tag, offset + PCI_PMCSR); if ((reg & PCI_PMCSR_STATE_MASK) != state) { pci_conf_write(pc, tag, offset + PCI_PMCSR, |