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path: root/drivers/ntb/hw/intel/ntb_hw_gen4.c
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2022-08-09ntb: intel: add GNR support for Intel PCIe gen5 NTBDave Jiang
Add Intel Granite Rapids NTB PCI device ID and related enabling. Expectation is same hardware interface as Saphire Rapids Xeon platforms. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Acked-by: Allen Hubbe <allenbh@gmail.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
2022-01-28ntb: intel: fix port config status offset for SPRDave Jiang
The field offset for port configuration status on SPR has been changed to bit 14 from ICX where it resides at bit 12. By chance link status detection continued to work on SPR. This is due to bit 12 being a configuration bit which is in sync with the status bit. Fix this by checking for a SPR device and checking correct status bit. Fixes: 26bfe3d0b227 ("ntb: intel: Add Icelake (gen4) support for Intel NTB") Tested-by: Jerry Dai <jerry.dai@intel.com> Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
2020-12-06ntb: intel: add Intel NTB LTR vendor support for gen4 NTBDave Jiang
Intel NTB device has custom LTR management that is not compliant with the PCIe standard. Add support to set LTR status triggered by link status change. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
2020-06-05ntb: intel: fix static declarationDave Jiang
intel_ntb4_link_disable() missing static declaration. Reported-by: kbuild test robot <lkp@intel.com> Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
2020-06-05ntb: intel: add hw workaround for NTB BAR alignmentDave Jiang
Add NTB_HWERR_BAR_ALIGN hw errata flag to work around issue where the aligment for the XLAT base must be BAR size aligned rather than 4k page aligned. On ICX platform, the XLAT base can be 4k page size aligned rather than BAR size aligned unlike the previous gen Intel NTB. However, a silicon errata prevented this from working as expected and a workaround is introduced to resolve the issue. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
2020-04-20ntb: intel: Add Icelake (gen4) support for Intel NTBDave Jiang
Adding 4th generation Intel NTB support bits. There are a lot of common parts that the gen4 NTB has with gen3 NTB on Skylake. The commonalities are reused in gen4 Icelake NTB. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>