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| author | Thomas Petazzoni <thomas.petazzoni@bootlin.com> | 2019-02-20 10:48:41 +0100 |
|---|---|---|
| committer | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2019-02-22 10:51:14 +0000 |
| commit | 33776d059630e5045ea9ccf756c74de8f9cc86de (patch) | |
| tree | 72e9013567363a1e8473693b7573b1686951d7d8 /block | |
| parent | 59f81c35e0df840f7112cb296dde48df84a67c79 (diff) | |
| download | linux-33776d059630e5045ea9ccf756c74de8f9cc86de.tar.gz | |
PCI: pci-bridge-emul: Extend pci_bridge_emul_init() with flags
Depending on the capabilities of the PCI controller/platform, the
PCI-to-PCI bridge emulation behavior might need to be different. For
example, on platforms that use the pci-mvebu code, we currently don't
support prefetchable memory BARs, so the corresponding fields in the
PCI-to-PCI bridge configuration space should be read-only.
To implement this, extend pci_bridge_emul_init() to take a "flags"
argument, with currently one flag supported:
PCI_BRIDGE_EMUL_NO_PREFETCHABLE_BAR
that will make the prefetchable memory base and limit registers
read-only.
The pci-mvebu and pci-aardvark drivers are updated accordingly.
Fixes: 1f08673eef123 ("PCI: mvebu: Convert to PCI emulated bridge config space")
Reported-by: Luís Mendes <luis.p.mendes@gmail.com>
Reported-by: Leigh Brown <leigh@solinno.co.uk>
Tested-by: Leigh Brown <leigh@solinno.co.uk>
Tested-by: Luis Mendes <luis.p.mendes@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: stable@vger.kernel.org
Cc: Luís Mendes <luis.p.mendes@gmail.com>
Cc: Leigh Brown <leigh@solinno.co.uk>
Diffstat (limited to 'block')
0 files changed, 0 insertions, 0 deletions