On Mon, 27 Jan 2014, John Baldwin wrote:
> Author: jhb
> Date: Mon Jan 27 19:49:52 2014
> New Revision: 261216
> URL: http://svnweb.freebsd.org/changeset/base/261216
>
> Log:
> Explicitly enable I/O and memory decoding in the bridge's command register
> when activating an I/O or memory window on the CardBus bridge.
This fixes some, but not all of my machines. One in particular, a Toshiba
M5 laptop, remains broken by r254263 even with this change. Specificaly,
the laptop does not notice when a card is inserted.
The attached minimal patch gets things working again, though I don't know
if is the correct fix or if a more involved fix is required.
dmesg before and after that patch:
http://people.freebsd.org/~gavin/m5-dmesg-before.txt
http://people.freebsd.org/~gavin/m5-dmesg-after.txt
The only difference is the cbb register dump, the one bit that I am
setting in the patch.
Thanks,
Gavin
Index: /usr/src/sys/dev/pccbb/pccbb_pci.c
===================================================================
--- /usr/src/sys/dev/pccbb/pccbb_pci.c (revision 261352)
+++ /usr/src/sys/dev/pccbb/pccbb_pci.c (working copy)
@@ -472,6 +472,7 @@
/* Enable memory access */
pci_enable_busmaster(sc->dev);
+ PCI_MASK_CONFIG(sc->dev, PCIR_COMMAND, | PCIM_CMD_PORTEN, 2);
/* disable Legacy IO */
switch (sc->chipset) {
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