diff options
| -rw-r--r-- | sys/dev/pci/pci.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/sys/dev/pci/pci.c b/sys/dev/pci/pci.c index 32b6032c8f5..d19037527b7 100644 --- a/sys/dev/pci/pci.c +++ b/sys/dev/pci/pci.c @@ -1,4 +1,4 @@ -/* $OpenBSD: pci.c,v 1.13 1998/08/22 17:59:04 rahnds Exp $ */ +/* $OpenBSD: pci.c,v 1.14 1998/10/29 18:11:53 csapuntz Exp $ */ /* $NetBSD: pci.c,v 1.31 1997/06/06 23:48:04 thorpej Exp $ */ /* @@ -231,6 +231,7 @@ pcisubmatch(parent, match, aux) { struct cfdata *cf = match; struct pci_attach_args *pa = aux; + int success; if (cf->pcicf_dev != PCI_UNK_DEV && cf->pcicf_dev != pa->pa_device) @@ -238,7 +239,25 @@ pcisubmatch(parent, match, aux) if (cf->pcicf_function != PCI_UNK_FUNCTION && cf->pcicf_function != pa->pa_function) return 0; - return ((*cf->cf_attach->ca_match)(parent, match, aux)); + + success = (*cf->cf_attach->ca_match)(parent, match, aux); + + /* My Dell BIOS does not enable certain non-critical PCI devices + for IO and memory cycles (e.g. network card). This is + the generic approach to fixing this problem. Basically, if + we support the card, then we enable its IO cycles. + */ + if (success) { + u_int32_t csr = pci_conf_read(pa->pa_pc, pa->pa_tag, + PCI_COMMAND_STATUS_REG); + + pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, + csr | PCI_COMMAND_MASTER_ENABLE | + PCI_COMMAND_IO_ENABLE | + PCI_COMMAND_MEM_ENABLE); + } + + return (success); } int |