diff options
| author | Federico G. Schwindt <fgsch@cvs.openbsd.org> | 2007-10-21 12:43:26 +0000 |
|---|---|---|
| committer | Federico G. Schwindt <fgsch@cvs.openbsd.org> | 2007-10-21 12:43:26 +0000 |
| commit | c68f32e747f94f99acd731da4ce88128f3a3f708 (patch) | |
| tree | 29b156cd950372ee6a9123f2ab44174f8e9510d9 /sys/dev/pci/cs4280.c | |
| parent | b0690652c0162f80e4f038c62342f61912eba959 (diff) | |
bring device back from power save mode if needed. fixes a problem reported
by Rodolfo Gouveia <rgouveia at cosmico dot net> on bugs@
Diffstat (limited to 'sys/dev/pci/cs4280.c')
| -rw-r--r-- | sys/dev/pci/cs4280.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/sys/dev/pci/cs4280.c b/sys/dev/pci/cs4280.c index cd2b61a0fb4..baefecfbf41 100644 --- a/sys/dev/pci/cs4280.c +++ b/sys/dev/pci/cs4280.c @@ -1,4 +1,4 @@ -/* $OpenBSD: cs4280.c,v 1.26 2007/08/01 21:37:21 miod Exp $ */ +/* $OpenBSD: cs4280.c,v 1.27 2007/10/21 12:43:25 fgsch Exp $ */ /* $NetBSD: cs4280.c,v 1.5 2000/06/26 04:56:23 simonb Exp $ */ /* @@ -604,6 +604,8 @@ cs4280_attach(parent, self, aux) char const *intrstr; pci_intr_handle_t ih; u_int32_t mem; + pcireg_t pmode; + int pmreg; /* Map I/O register */ if (pci_mapreg_map(pa, CSCC_PCI_BA0, @@ -621,6 +623,16 @@ cs4280_attach(parent, self, aux) sc->sc_dmatag = pa->pa_dmat; + /* Get out of power save mode if needed. */ + if (pci_get_capability(pc, pa->pa_tag, PCI_CAP_PWRMGMT, &pmreg, 0)) { + pmode = pci_conf_read(pc, pa->pa_tag, pmreg + PCI_PMCSR); + if ((pmode & PCI_PMCSR_STATE_MASK) != PCI_PMCSR_STATE_D0) { + pci_conf_write(pc, pa->pa_tag, pmreg + PCI_PMCSR, + (pmode & ~PCI_PMCSR_STATE_MASK) | + PCI_PMCSR_STATE_D0); + } + } + /* LATENCY_TIMER setting */ mem = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_BHLC_REG); if ( PCI_LATTIMER(mem) < 32 ) { |