linux-stable.git/include/linux/intel-iommu.h, branch v5.2.20

iommu/vt-d: Remove global page flush support

2019-09-21T05:18:48+00:00

[ Upstream commit 8744daf4b0699b724ee0a56b313a6c0c4ea289e3 ]

Global pages support is removed from VT-d spec 3.0. Since global pages G
flag only affects first-level paging structures and because DMA request
with PASID are only supported by VT-d spec. 3.0 and onward, we can
safely remove global pages support.

For kernel shared virtual address IOTLB invalidation, PASID
granularity and page selective within PASID will be used. There is
no global granularity supported. Without this fix, IOTLB invalidation
will cause invalid descriptor error in the queued invalidation (QI)
interface.

Fixes: 1c4f88b7f1f9 ("iommu/vt-d: Shared virtual address in scalable mode")
Reported-by: Sanjay K Kumar 
Signed-off-by: Jacob Pan 
Signed-off-by: Joerg Roedel 
Signed-off-by: Sasha Levin

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 320

2019-06-05T15:37:05+00:00

Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms and conditions of the gnu general public license
  version 2 as published by the free software foundation this program
  is distributed in the hope it will be useful but without any
  warranty without even the implied warranty of merchantability or
  fitness for a particular purpose see the gnu general public license
  for more details you should have received a copy of the gnu general
  public license along with this program if not write to the free
  software foundation inc 59 temple place suite 330 boston ma 02111
  1307 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 33 file(s).

Signed-off-by: Thomas Gleixner 
Reviewed-by: Allison Randal 
Reviewed-by: Kate Stewart 
Reviewed-by: Alexios Zavras 
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190530000435.254582722@linutronix.de
Signed-off-by: Greg Kroah-Hartman

iommu/vt-d: Aux-domain specific domain attach/detach

2019-04-11T15:15:48+00:00

When multiple domains per device has been enabled by the
device driver, the device will tag the default PASID for
the domain to all DMA traffics out of the subset of this
device; and the IOMMU should translate the DMA requests
in PASID granularity.

This adds the intel_iommu_aux_attach/detach_device() ops
to support managing PASID granular translation structures
when the device driver has enabled multiple domains per
device.

Cc: Ashok Raj 
Cc: Jacob Pan 
Cc: Kevin Tian 
Signed-off-by: Sanjay Kumar 
Signed-off-by: Liu Yi L 
Signed-off-by: Lu Baolu 
Signed-off-by: Joerg Roedel

iommu/vt-d: Add per-device IOMMU feature ops entries

2019-04-11T15:15:48+00:00

This adds the iommu ops entries for aux-domain per-device
feature query and enable/disable.

Cc: Ashok Raj 
Cc: Jacob Pan 
Cc: Kevin Tian 
Signed-off-by: Sanjay Kumar 
Signed-off-by: Liu Yi L 
Signed-off-by: Lu Baolu 
Signed-off-by: Joerg Roedel

iommu/vt-d: Make intel_iommu_enable_pasid() more generic

2019-04-11T15:15:48+00:00

This moves intel_iommu_enable_pasid() out of the scope of
CONFIG_INTEL_IOMMU_SVM with more and more features requiring
pasid function.

Cc: Ashok Raj 
Cc: Jacob Pan 
Cc: Kevin Tian 
Signed-off-by: Lu Baolu 
Signed-off-by: Joerg Roedel

iommu/vt-d: Support page request in scalable mode

2019-01-11T12:10:03+00:00

VT-d Rev3.0 has made a few changes to the page request interface,

1. widened PRQ descriptor from 128 bits to 256 bits;
2. removed streaming response type;
3. introduced private data that requires page response even the
   request is not last request in group (LPIG).

This is a supplement to commit 1c4f88b7f1f92 ("iommu/vt-d: Shared
virtual address in scalable mode") and makes the svm code compliant
with VT-d Rev3.0.

Cc: Ashok Raj 
Cc: Liu Yi L 
Cc: Kevin Tian 
Signed-off-by: Jacob Pan 
Fixes: 1c4f88b7f1f92 ("iommu/vt-d: Shared virtual address in scalable mode")
Signed-off-by: Lu Baolu 
Signed-off-by: Joerg Roedel

iommu/vt-d: Remove deferred invalidation

2018-12-11T09:46:00+00:00

Deferred invalidation is an ECS specific feature. It will not be
supported when IOMMU works in scalable mode. As we deprecated the
ECS support, remove deferred invalidation and cleanup the code.

Cc: Ashok Raj 
Cc: Jacob Pan 
Cc: Kevin Tian 
Cc: Liu Yi L 
Cc: Sanjay Kumar 
Signed-off-by: Lu Baolu 
Reviewed-by: Ashok Raj 
Signed-off-by: Joerg Roedel

iommu/vt-d: Shared virtual address in scalable mode

2018-12-11T09:46:00+00:00

This patch enables the current SVA (Shared Virtual Address)
implementation to work in the scalable mode.

Cc: Ashok Raj 
Cc: Jacob Pan 
Cc: Kevin Tian 
Signed-off-by: Sanjay Kumar 
Signed-off-by: Liu Yi L 
Signed-off-by: Lu Baolu 
Reviewed-by: Ashok Raj 
Signed-off-by: Joerg Roedel

iommu/vt-d: Add first level page table interface

2018-12-11T09:45:59+00:00

This adds an interface to setup the PASID entries for first
level page table translation.

Cc: Ashok Raj 
Cc: Jacob Pan 
Cc: Kevin Tian 
Signed-off-by: Sanjay Kumar 
Signed-off-by: Liu Yi L 
Signed-off-by: Lu Baolu 
Reviewed-by: Ashok Raj 
Signed-off-by: Joerg Roedel

iommu/vt-d: Setup context and enable RID2PASID support

2018-12-11T09:45:59+00:00

This patch enables the translation for requests without PASID in
the scalable mode by setting up the root and context entries.

Cc: Ashok Raj 
Cc: Jacob Pan 
Cc: Kevin Tian 
Signed-off-by: Sanjay Kumar 
Signed-off-by: Liu Yi L 
Signed-off-by: Lu Baolu 
Reviewed-by: Ashok Raj 
Signed-off-by: Joerg Roedel