Commit Graph

5 Commits

Author SHA1 Message Date
Thierry Reding
b22f6434cf iommu: Constify struct iommu_ops
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>
2014-07-07 10:36:59 +02:00
Marek Szyprowski
68efd7d2fb arm: dma-mapping: remove order parameter from arm_iommu_create_mapping()
The 'order' parameter for IOMMU-aware dma-mapping implementation was
introduced mainly as a hack to reduce size of the bitmap used for
tracking IO virtual address space. Since now it is possible to dynamically
resize the bitmap, this hack is not needed and can be removed without any
impact on the client devices. This way the parameters for
arm_iommu_create_mapping() becomes much easier to understand. 'size'
parameter now means the maximum supported IO address space size.

The code will allocate (resize) bitmap in chunks, ensuring that a single
chunk is not larger than a single memory page to avoid unreliable
allocations of size larger than PAGE_SIZE in atomic context.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
2014-02-28 11:55:18 +01:00
Laurent Pinchart
dc89f797ab iommu/shmobile: Allocate archdata with kzalloc()
The archdata attached_list field isn't initialized, leading to random
crashes when accessed. Use kzalloc() to allocate the whole structure and
make sure all fields get initialized properly.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
2014-01-07 15:35:25 +01:00
Varun Sethi
bb5547acfc iommu/fsl: Make iova dma_addr_t in the iommu_iova_to_phys API.
This is required in case of PAMU, as it can support a window size of up
to 64G (even on 32bit).

Signed-off-by: Varun Sethi <Varun.Sethi@freescale.com>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-04-02 18:20:53 +02:00
Hideki EIRAKU
c2c460f7c1 iommu/shmobile: Add iommu driver for Renesas IPMMU modules
This is the Renesas IPMMU driver and IOMMU API implementation.

The IPMMU module supports the MMU function and the PMB function.  The
MMU function provides address translation by pagetable compatible with
ARMv6.  The PMB function provides address translation including
tile-linear translation.  This patch implements the MMU function.

The iommu driver does not register a platform driver directly because:
- the register space of the MMU function and the PMB function
  have a common register (used for settings flush), so they should ideally
  have a way to appropriately share this register.
- the MMU function uses the IOMMU API while the PMB function does not.
- the two functions may be used independently.

Signed-off-by: Hideki EIRAKU <hdk@igel.co.jp>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-02-06 10:57:25 +01:00