diff options
| author | Per Fogelstrom <pefo@cvs.openbsd.org> | 1997-10-10 10:56:42 +0000 |
|---|---|---|
| committer | Per Fogelstrom <pefo@cvs.openbsd.org> | 1997-10-10 10:56:42 +0000 |
| commit | de0429a09cb344980883e035261f491cb109060b (patch) | |
| tree | c69c51037fbee23bac524afde3f98d50ca43305f | |
| parent | 0869c3b92ec01e5f365bb8e5ed9f02173bd2a272 (diff) | |
Add a special fix for OpenFirmware Power PC PCI. It seems that OFW shuts
down the HW by disabling it when closing the device. So we have to make
sure that the board is configured to respond to memory accesses.
| -rw-r--r-- | sys/dev/pci/pci.c | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/sys/dev/pci/pci.c b/sys/dev/pci/pci.c index 29c9e453a5f..f36ec26d655 100644 --- a/sys/dev/pci/pci.c +++ b/sys/dev/pci/pci.c @@ -1,4 +1,4 @@ -/* $OpenBSD: pci.c,v 1.6 1997/01/24 19:34:15 niklas Exp $ */ +/* $OpenBSD: pci.c,v 1.7 1997/10/10 10:56:41 pefo Exp $ */ /* $NetBSD: pci.c,v 1.26 1996/12/05 01:25:30 cgd Exp $ */ /* @@ -263,6 +263,20 @@ pci_io_find(pc, pcitag, reg, iobasep, iosizep) if (iosizep != NULL) *iosizep = PCI_MAPREG_IO_SIZE(sizedata); +#ifdef powerpc + /* + * Open Firmware (yuck) shuts down devices before entering a + * program so we need to bring them back 'online' to respond + * to bus accesses... + */ + s = splhigh(); + sizedata = pci_conf_read(pc, pcitag, PCI_COMMAND_STATUS_REG); + sizedata |= (PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_IO_ENABLE | + PCI_COMMAND_PARITY_ENABLE | PCI_COMMAND_SERR_ENABLE); + pci_conf_write(pc, pcitag, PCI_COMMAND_STATUS_REG, sizedata); + splx(s); +#endif + return (0); } @@ -321,6 +335,20 @@ pci_mem_find(pc, pcitag, reg, membasep, memsizep, cacheablep) if (cacheablep != NULL) *cacheablep = PCI_MAPREG_MEM_CACHEABLE(addrdata); +#ifdef power4e + /* + * Open Firmware (yuck) shuts down devices before entering a + * program so we need to bring them back 'online' to respond + * to bus accesses... + */ + s = splhigh(); + sizedata = pci_conf_read(pc, pcitag, PCI_COMMAND_STATUS_REG); + sizedata |= (PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_MEM_ENABLE | + PCI_COMMAND_PARITY_ENABLE | PCI_COMMAND_SERR_ENABLE); + pci_conf_write(pc, pcitag, PCI_COMMAND_STATUS_REG, sizedata); + splx(s); +#endif + return 0; } |