linux-toradex.git/include/linux/iova.h, branch v4.6-rc3 Linux kernel for Apalis and Colibri modules iommu: iova: Move iova cache management to the iova library 2015-07-28T14:47:58+00:00 Sakari Ailus sakari.ailus@linux.intel.com 2015-07-13T11:31:28+00:00 ae1ff3d623905947158fd3394854c23026337810 This is necessary to separate intel-iommu from the iova library. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> 
This is necessary to separate intel-iommu from the iova library.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
iommu: Make IOVA domain page size explicit 2015-01-19T13:55:22+00:00 Robin Murphy robin.murphy@arm.com 2015-01-12T17:51:16+00:00 0fb5fe874c42942e16c450ae05da453e13a1c09e Systems may contain heterogeneous IOMMUs supporting differing minimum page sizes, which may also not be common with the CPU page size. Thus it is practical to have an explicit notion of IOVA granularity to simplify handling of mapping and allocation constraints. As an initial step, move the IOVA page granularity from an implicit compile-time constant to a per-domain property so we can make use of it in IOVA domain context at runtime. To keep the abstraction tidy, extend the little API of inline iova_* helpers to parallel some of the equivalent PAGE_* macros. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de> 
Systems may contain heterogeneous IOMMUs supporting differing minimum
page sizes, which may also not be common with the CPU page size.
Thus it is practical to have an explicit notion of IOVA granularity
to simplify handling of mapping and allocation constraints.

As an initial step, move the IOVA page granularity from an implicit
compile-time constant to a per-domain property so we can make use
of it in IOVA domain context at runtime. To keep the abstraction tidy,
extend the little API of inline iova_* helpers to parallel some of the
equivalent PAGE_* macros.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
iommu: Make IOVA domain low limit flexible 2015-01-19T13:55:22+00:00 Robin Murphy robin.murphy@arm.com 2015-01-12T17:51:15+00:00 1b72250076dde4276acecf3a7da722b185703e78 To share the IOVA allocator with other architectures, it needs to accommodate more general aperture restrictions; move the lower limit from a compile-time constant to a runtime domain property to allow IOVA domains with different requirements to co-exist. Also reword the slightly unclear description of alloc_iova since we're touching it anyway. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de> 
To share the IOVA allocator with other architectures, it needs to
accommodate more general aperture restrictions; move the lower limit
from a compile-time constant to a runtime domain property to allow
IOVA domains with different requirements to co-exist.

Also reword the slightly unclear description of alloc_iova since we're
touching it anyway.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
iommu: Consolidate IOVA allocator code 2015-01-19T13:55:22+00:00 Robin Murphy robin.murphy@arm.com 2015-01-12T17:51:14+00:00 85b4545629663486b7f71047ce3b54fa0ad3eb28 In order to share the IOVA allocator with other architectures, break the unnecssary dependency on the Intel IOMMU driver and move the remaining IOVA internals to iova.c Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de> 
In order to share the IOVA allocator with other architectures, break
the unnecssary dependency on the Intel IOMMU driver and move the
remaining IOVA internals to iova.c

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
iommu/vt-d: Introduce helper function iova_size() to improve code readability 2014-07-23T14:04:47+00:00 Jiang Liu jiang.liu@linux.intel.com 2014-07-11T06:19:36+00:00 a156ef99e874f3701367cc192aa604bcf8c0a236 Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Signed-off-by: Joerg Roedel <jroedel@suse.de> 
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
iommu/vt-d: Update IOMMU state when memory hotplug happens 2014-03-04T16:51:06+00:00 Jiang Liu jiang.liu@linux.intel.com 2014-02-19T06:07:37+00:00 75f05569d0e51f6332a291c82abbeb7c8262e32d If static identity domain is created, IOMMU driver needs to update si_domain page table when memory hotplug event happens. Otherwise PCI device DMA operations can't access the hot-added memory regions. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Signed-off-by: Joerg Roedel <joro@8bytes.org> 
If static identity domain is created, IOMMU driver needs to update
si_domain page table when memory hotplug event happens. Otherwise
PCI device DMA operations can't access the hot-added memory regions.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
intel-iommu: Remove superfluous iova_alloc_lock from IOVA code 2009-07-15T07:17:02+00:00 David Woodhouse David.Woodhouse@intel.com 2009-07-08T14:23:30+00:00 3d39cecc4841e8d4c4abdb401d10180f5faaded0 We only ever obtain this lock immediately before the iova_rbtree_lock, and release it immediately after the iova_rbtree_lock. So ditch it and just use iova_rbtree_lock. [v2: Remove the lockdep bits this time too] Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> 
We only ever obtain this lock immediately before the iova_rbtree_lock,
and release it immediately after the iova_rbtree_lock. So ditch it and
just use iova_rbtree_lock.

[v2: Remove the lockdep bits this time too]
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
VT-d: Changes to support KVM 2008-10-15T12:24:08+00:00 Kay, Allen M allen.m.kay@intel.com 2008-09-09T15:37:29+00:00 387179464257921eb9aa3d15cc3ff194f6945a7c This patch extends the VT-d driver to support KVM [Ben: fixed memory pinning] [avi: move dma_remapping.h as well] Signed-off-by: Kay, Allen M <allen.m.kay@intel.com> Signed-off-by: Weidong Han <weidong.han@intel.com> Signed-off-by: Ben-Ami Yassour <benami@il.ibm.com> Signed-off-by: Amit Shah <amit.shah@qumranet.com> Acked-by: Mark Gross <mgross@linux.intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com> 
This patch extends the VT-d driver to support KVM

[Ben: fixed memory pinning]
[avi: move dma_remapping.h as well]

Signed-off-by: Kay, Allen M <allen.m.kay@intel.com>
Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: Ben-Ami Yassour <benami@il.ibm.com>
Signed-off-by: Amit Shah <amit.shah@qumranet.com>
Acked-by: Mark Gross <mgross@linux.intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>