PCI/ERR: Cache RCEC EA Capability offset in pci_init_capabilities()

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Extend support for Root Complex Event Collectors by decoding and caching
the RCEC Endpoint Association Extended Capabilities when enumerating. Use
that cached information for later error source reporting. See PCIe r5.0,
sec 7.9.10.

Co-developed-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Link: https://lore.kernel.org/r/20201121001036.8560-4-sean.v.kelley@intel.com
Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> # non-native/no RCEC
Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Signed-off-by: Sean V Kelley <sean.v.kelley@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

...

This commit is contained in:

Sean V Kelley 2020-11-20 16:10:24 -08:00 • committed by Bjorn Helgaas

parent c9d659b607

commit 9065563198

5 changed files with 83 additions and 1 deletions

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17

drivers/pci/pci.h

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2

drivers/pci/pcie/Makefile

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59

drivers/pci/pcie/rcec.c

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2

drivers/pci/probe.c

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4

include/linux/pci.h

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