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| author | Randy Vinson <rvinson@mvista.com> | 2006-10-12 13:36:23 -0700 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-10-16 15:53:30 +1000 |
| commit | 60b2a46cd60c54bd6551ddfa01f0aab08ca58a5d (patch) | |
| tree | 7eeea9f0b7419b19e1292a563dd6415fddf5122c | |
| parent | 8ba738c2bb8fb83c0c99f680444d3ffd4c178ca2 (diff) | |
| download | linux-3.10-60b2a46cd60c54bd6551ddfa01f0aab08ca58a5d.tar.gz linux-3.10-60b2a46cd60c54bd6551ddfa01f0aab08ca58a5d.tar.bz2 linux-3.10-60b2a46cd60c54bd6551ddfa01f0aab08ca58a5d.zip | |
[POWERPC] Fix IO Window Updates on P2P bridges.
When update_bridge_base() updates the IO window on a PCI-to-PCI
bridge, it fails to zero the upper 16 bits of the base and limit
registers if the window size is less than 64K. This fixes it.
Signed-off-by: Paul Mackerras <paulus@samba.org>
| -rw-r--r-- | arch/powerpc/kernel/pci_32.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/arch/powerpc/kernel/pci_32.c b/arch/powerpc/kernel/pci_32.c index 9b49f8691d2..0d9ff72e285 100644 --- a/arch/powerpc/kernel/pci_32.c +++ b/arch/powerpc/kernel/pci_32.c @@ -441,14 +441,14 @@ update_bridge_base(struct pci_bus *bus, int i) end = res->end - off; io_base_lo = (start >> 8) & PCI_IO_RANGE_MASK; io_limit_lo = (end >> 8) & PCI_IO_RANGE_MASK; - if (end > 0xffff) { - pci_write_config_word(dev, PCI_IO_BASE_UPPER16, - start >> 16); - pci_write_config_word(dev, PCI_IO_LIMIT_UPPER16, - end >> 16); + if (end > 0xffff) io_base_lo |= PCI_IO_RANGE_TYPE_32; - } else + else io_base_lo |= PCI_IO_RANGE_TYPE_16; + pci_write_config_word(dev, PCI_IO_BASE_UPPER16, + start >> 16); + pci_write_config_word(dev, PCI_IO_LIMIT_UPPER16, + end >> 16); pci_write_config_byte(dev, PCI_IO_BASE, io_base_lo); pci_write_config_byte(dev, PCI_IO_LIMIT, io_limit_lo); |