PCI: mvebu: Obey bridge PCI_COMMAND_MEM and PCI_COMMAND_IO bits

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When PCI_COMMAND_MEMORY/PCI_COMMAND_IO are cleared, the bridge should not
allocate windows or even look at the window limit/base registers.

Otherwise we may set up bogus windows while the PCI core code performs
discovery.  The core will leave PCI_COMMAND_IO cleared if it doesn't need
an IO window.

Have mvebu_pcie_handle_*_change respect the bits, and call the change
function whenever the bits changes.

Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Jason Cooper <jason@lakedaemon.net>

...

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Jason Gunthorpe 2013-11-26 11:02:54 -07:00 • committed by Bjorn Helgaas

parent 2850b05c96

commit 43a16f9444

1 changed files with 12 additions and 2 deletions

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drivers/pci/host/pci-mvebu.c

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