Messages in this thread | | | From | Anshuman Khandual <> | Subject | IOAT 4.0 driver not supported on Intel 5000 chipset | Date | Wed, 25 Jan 2017 11:16:26 +0530 |
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Hello Vinod/Dave,
I have an old X86 system with 'Intel(R) Xeon(R) CPU X5450' which has '5000 Series Chipset'. The latest mainline IOAT driver does not work on it. Dont see /sys/class/dma getting filled up with channel details even if I manually load both dca.ko followed by ioatdma.ko drivers after the system boots. As it was working on a old distro kernel like 3.10, did a git bisect to figure out that the support was removed for older IOAT HW around August 2015 with the following commits.
commit 85596a19478da5125f3471a0c474b3f05a78e390 Author: Dave Jiang <dave.jiang@intel.com> Date: Tue Aug 11 08:48:10 2015 -0700
dmaengine: ioatdma: remove ioat1 specific code
Cleaning up of ioat1 specific code as it is no longer supported
Signed-off-by: Dave Jiang <dave.jiang@intel.com> Acked-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
d73f277b329f46c13527c1090808421828671596 is the first bad commit commit d73f277b329f46c13527c1090808421828671596 Author: Dave Jiang <dave.jiang@intel.com> Date: Tue Aug 11 08:48:04 2015 -0700
dmaengine: ioatdma: deprecating and removal of old ioatdma devices
Removal of any devices that are ioatdma pre-3.0. This is the first step in attempting to clean up the ioatdma driver and remove hw no longer supported.
Signed-off-by: Dave Jiang <dave.jiang@intel.com> Acked-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
I intend to use the HW with mainline kernel. Is there any work around which can make it happen ?
Regards Anshuman
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