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Altera_Forum
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12 years ago

Resource Collisions when installing PCIe DD

Does anyone know what this could mean ? Jan 1 00:30:22 linaro-developer kernel: [ 1822.434579] PCI: Device 0000:01:00.0 not available because of resource collisions I have the sample SG ...
Altera_Forum's avatar
Altera_Forum
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11 years ago

BAR registers are typically for access to small regions, eg., typically no more than 1MB regions (20-bits). Any larger than this, and a lot of PCs will not even boot, eg., your 32-bit BAR is asking for a 4GB region in the host memory map. If that host is 32-bits ... well ... that ain't going to happen :)

Try smaller BAR regions and see if that helps.

Ignore any arguments in favor of large BARs, that discussion can come after you resolve this issue :)

Cheers,

Dave