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| author | Thomas Huth <thuth@redhat.com> | 2017-07-14 11:45:54 +0200 |
|---|---|---|
| committer | Alexey Kardashevskiy <aik@ozlabs.ru> | 2017-07-21 15:03:29 +1000 |
| commit | c4dd5b62f0d027dc653888f6e049bbb77f832cc4 (patch) | |
| tree | e62734f4d30d25503c3e79824d1c3d524d356ea8 /slof | |
| parent | 206cff5fc88231d06ec2465873814da1f85e2b00 (diff) | |
| download | SLOF-c4dd5b62f0d027dc653888f6e049bbb77f832cc4.zip SLOF-c4dd5b62f0d027dc653888f6e049bbb77f832cc4.tar.gz SLOF-c4dd5b62f0d027dc653888f6e049bbb77f832cc4.tar.bz2 | |
pci: Avoid 32-bit prefetchable memory area if possible
PCI bridges can only have one prefetchable memory area. If we are
already using 64-bit prefetchable memory regions, we can not use
a dedicated 32-bit prefetchable memory region anymore. In that
case the 32-bit BARs should all be located in the 32-bit non-
prefetchable memory space instead.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Diffstat (limited to 'slof')
| -rw-r--r-- | slof/fs/pci-properties.fs | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/slof/fs/pci-properties.fs b/slof/fs/pci-properties.fs index b7bb534..6f8f013 100644 --- a/slof/fs/pci-properties.fs +++ b/slof/fs/pci-properties.fs @@ -159,7 +159,12 @@ \ Setup a prefetchable 32bit BAR and return its size : assign-mem32-bar ( bar-addr -- 4 ) dup pci-bar-size-mem32 \ fetch size - pci-next-mem \ var to change + \ Do we have a dedicated 32-bit prefetchable area? If not, use MMIO + pci-next-mem @ IF + pci-next-mem + ELSE + pci-next-mmio + THEN assign-bar-value32 \ and set it all ; |