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Bug #12351

Remove the 32bit DMA restrictions in the emlxs driver

Added by Paul Winder 30 days ago. Updated 12 days ago.

Status:
Closed
Priority:
Normal
Assignee:
Paul Winder
Category:
driver - device drivers
Start date:
Due date:
% Done:

100%

Estimated time:
Difficulty:
Medium
Tags:

Description

The emlxs driver explicitly restricts DMA memory allocations to 32 bit addresses.

Yet, the driver uses the full high/low address support for physical addresses, it just restricts the allocation to low addresses. I suspect this is a misconception inherited from when Illumos was restricted to <4G PCI addresses.

Along with #12350, I have been running with this restriction removed.

History

#1

Updated by Electric Monk 12 days ago

  • % Done changed from 90 to 100
  • Status changed from In Progress to Closed

git commit a3170057524922242772a15fbeb3e91f5f8d4744

commit  a3170057524922242772a15fbeb3e91f5f8d4744
Author: Paul Winder <pwinder@racktopsystems.com>
Date:   2020-03-16T14:49:02.000Z

    12350 Add support for Emulex LPe31000 and LPe32000 fibre channel chipsets
    12351 Remove the 32bit DMA restrictions in the emlxs driver
    Reviewed by: Garrett D'Amore <gdamore@racktopsystems.com>
    Reviewed by: Albert Lee <alee@racktopsystems.com>
    Reviewed by: Andy Fiddaman <omnios@citrus-it.co.uk>
    Reviewed by: Toomas Soome <tsoome@me.com>
    Reviewed by: Robert Mustacchi <rm@fingolfin.org>
    Approved by: Dan McDonald <danmcd@joyent.com>

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