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Linux Kernel Seeing Thunderbolt Improvements That Will Help Older Apple Hardware

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  • Linux Kernel Seeing Thunderbolt Improvements That Will Help Older Apple Hardware

    Phoronix: Linux Kernel Seeing Thunderbolt Improvements That Will Help Older Apple Hardware

    A set of 28 patches posted today by Intel Linux developer Mika Westerberg would improve the kernel's Thunderbolt software connection manager and particularly help older Apple hardware...

    http://www.phoronix.com/scan.php?pag...-Conn-Mgr-Work

  • #2
    One notable omission in the Thunderbolt stack on Linux: the Redwood Ridge (DSL4410) chip on my Supermicro X10SAT. Even that patch set seems to miss any mention of Redwood Ridge. The BIOS supports several security modes, but the only mode that works with Linux is Legacy (i.e. insecure) mode.

    Code:
    0e:00.0 System peripheral [0880]: Intel Corporation DSL4410 Thunderbolt NHI [Redwood Ridge 2C 2013] [8086:1566]
        Subsystem: Device [2222:1111]
        Flags: fast devsel, IRQ 16
        Memory at ee000000 (32-bit, non-prefetchable) [size=256K]
        Memory at ee040000 (32-bit, non-prefetchable) [size=4K]
        Capabilities: [80] Power Management version 3
        Capabilities: [88] MSI: Enable- Count=1/1 Maskable- 64bit+
        Capabilities: [c0] Express Endpoint, MSI 00
        Capabilities: [a0] MSI-X: Enable- Count=16 Masked-
        Capabilities: [100] Device Serial Number 01-00-00-00-00-<redacted three pairs of digits>
        Capabilities: [200] Advanced Error Reporting
        Capabilities: [300] Virtual Channel
        Capabilities: [400] Power Budgeting <?>
        Capabilities: [500] Vendor Specific Information: ID=1234 Rev=1 Len=050 <?>
        Capabilities: [600] Latency Tolerance Reporting

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