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Differential D6605

Create parent bus_dma tags to mark the bus as cache-coherent
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Authored by andrew on May 27 2016, 1:20 PM.
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arm64
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rS301031: Mark the ThunderX and generic PCI drivers as cache-coherent when we know
Summary

This marks the PCIe drivers used on arm64 as cache-coherent when this is
the case. In the ThunxerX cases we hardcode them to be coherent, and
in the generic PCIe driver we check the dma-coherent FDT property to
find if they are coherent.

I have tested this on both Pass 1.1 and 2.0 ThunderX with extra KASSERTs
to check the dma tags are all marked as cache-coherent.

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rS FreeBSD src repository - subversion
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andrew updated this revision to Diff 16991.May 27 2016, 1:20 PM
andrew retitled this revision from to Create parent bus_dma tags to mark the bus as cache-coherent.
andrew updated this object.
andrew edited the test plan for this revision. (Show Details)
andrew added a reviewer: arm64.
andrew added a subscriber: emaste.
Herald added a subscriber: imp. · View Herald TranscriptMay 27 2016, 1:20 PM
Closed by commit rS301031: Mark the ThunderX and generic PCI drivers as cache-coherent when we know (authored by andrew). · Explain WhyMay 31 2016, 9:15 AM
This revision was automatically updated to reflect the committed changes.

Revision Contents
Changeset List

PathSize
head/
sys/
arm64/
cavium/
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1 line
27 lines
dev/
pci/
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35 lines

Diff 17141

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head/sys/arm64/cavium/thunder_pcie_fdt.c

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head/sys/arm64/cavium/thunder_pcie_pem.h

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head/sys/arm64/cavium/thunder_pcie_pem.c

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head/sys/dev/pci/pci_host_generic.h

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head/sys/dev/pci/pci_host_generic.c

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