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path: root/drivers/iommu/ipmmu-vmsa.c
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2015-01-05iommu/ipmmu-vmsa: Change IOMMU_EXEC to IOMMU_NOEXECLaurent Pinchart1-3/+3
Commit a720b41c41f5a7e4 ("iommu/arm-smmu: change IOMMU_EXEC to IOMMU_NOEXEC") has inverted and replaced the IOMMU_EXEC flag with IOMMU_NOEXEC. Update the driver accordingly. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-12-14Merge tag 'driver-core-3.19-rc1' of ↵Linus Torvalds1-1/+0
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core update from Greg KH: "Here's the set of driver core patches for 3.19-rc1. They are dominated by the removal of the .owner field in platform drivers. They touch a lot of files, but they are "simple" changes, just removing a line in a structure. Other than that, a few minor driver core and debugfs changes. There are some ath9k patches coming in through this tree that have been acked by the wireless maintainers as they relied on the debugfs changes. Everything has been in linux-next for a while" * tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits) Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries" fs: debugfs: add forward declaration for struct device type firmware class: Deletion of an unnecessary check before the function call "vunmap" firmware loader: fix hung task warning dump devcoredump: provide a one-way disable function device: Add dev_<level>_once variants ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries ath: use seq_file api for ath9k debugfs files debugfs: add helper function to create device related seq_file drivers/base: cacheinfo: remove noisy error boot message Revert "core: platform: add warning if driver has no owner" drivers: base: support cpu cache information interface to userspace via sysfs drivers: base: add cpu_device_create to support per-cpu devices topology: replace custom attribute macros with standard DEVICE_ATTR* cpumask: factor out show_cpumap into separate helper function driver core: Fix unbalanced device reference in drivers_probe driver core: fix race with userland in device_add() sysfs/kernfs: make read requests on pre-alloc files use the buffer. sysfs/kernfs: allow attributes to request write buffer be pre-allocated. fs: sysfs: return EGBIG on write if offset is larger than file size ...
2014-12-02Merge branches 'arm/omap', 'arm/msm', 'arm/rockchip', 'arm/renesas', ↵Joerg Roedel1-1/+2
'arm/smmu', 'x86/vt-d', 'x86/amd' and 'core' into next Conflicts: drivers/iommu/arm-smmu.c
2014-11-04iommu/ipmmu-vmsa: Return proper error if devm_request_irq failsAxel Lin1-1/+1
Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-11-04iommu: Add iommu_map_sg() functionOlav Haugan1-0/+1
Mapping and unmapping are more often than not in the critical path. map_sg allows IOMMU driver implementations to optimize the process of mapping buffers into the IOMMU page tables. Instead of mapping a buffer one page at a time and requiring potentially expensive TLB operations for each page, this function allows the driver to map all pages in one go and defer TLB maintenance until after all pages have been mapped. Additionally, the mapping operation would be faster in general since clients does not have to keep calling map API over and over again for each physically contiguous chunk of memory that needs to be mapped to a virtually contiguous region. Signed-off-by: Olav Haugan <ohaugan@codeaurora.org> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-10-20iommu: drop owner assignment from platform_driversWolfram Sang1-1/+0
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-07-07iommu: Constify struct iommu_opsThierry Reding1-1/+1
This structure is read-only data and should never be modified. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-05-26arm/ipmmu-vmsa: Fix compile errorJoerg Roedel1-1/+1
The function arm_iommu_create_mapping lost the order parameter. Remove it from this IOMMU driver too to make it build. Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-05-26iommu/ipmmu-vmsa: Support clearing mappingsLaurent Pinchart1-4/+186
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-05-26iommu/ipmmu-vmsa: Remove stage 2 PTE bits definitionsLaurent Pinchart1-8/+0
We don't support stage 2 translation yet. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-05-26iommu/ipmmu-vmsa: Support 2MB mappingsLaurent Pinchart1-3/+29
Add support for 2MB block mappings at the PMD level. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-05-26iommu/ipmmu-vmsa: Rewrite page table managementLaurent Pinchart1-107/+86
The IOMMU core will only call us with page sizes advertized as supported by the driver. We can thus simplify the code by removing loops over PGD and PMD entries. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-05-26iommu/ipmmu-vmsa: PMD is never folded, PUD always isLaurent Pinchart1-57/+9
The driver only supports the 3-level long descriptor format that has no PUD and always has a PMD. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-05-26iommu/ipmmu-vmsa: Set the PTE contiguous hint bit when possibleLaurent Pinchart1-3/+40
The contiguous hint bit signals to the IOMMU that a range of 16 PTEs refer to physically contiguous memory. It improves performances by dividing the number of TLB lookups by 16, effectively implementing 64kB page sizes. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-05-26iommu/ipmmu-vmsa: Define driver-specific page directory sizesLaurent Pinchart1-5/+10
The PTRS_PER_(PUD|PGD|PMD|PTE) macros evaluate to different values depending on whether LPAE is enabled. The IPMMU driver uses a long descriptor format regardless of LPAE, making those macros mismatch the IPMMU configuration on non-LPAE systems. Replace the macros by driver-specific versions that always evaluate to the right value. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-05-26iommu/ipmmu-vmsa: Fix the supported page sizesLaurent Pinchart1-1/+1
The hardware supports 2MB page sizes, not 1MB. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-05-26iommu/ipmmu-vmsa: Refactor micro-TLB lookupLaurent Pinchart1-40/+52
Cache the micro-TLB number in archdata allocated in the .add_device handler instead of looking it up when the deviced is attached and detached. This simplifies the .attach_dev and .detach_dev operations and prepares for DT support. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-05-26iommu: Add driver for Renesas VMSA-compatible IPMMULaurent Pinchart1-0/+1070
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
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