Commit Graph

12 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
Joerg Roedel 720b0cef71 arm/ipmmu-vmsa: Fix compile error
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>
2014-05-26 13:18:18 +02:00
Laurent Pinchart 004c5b32fa iommu/ipmmu-vmsa: Support clearing mappings
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-05-26 11:22:26 +02:00
Laurent Pinchart bec0ca0333 iommu/ipmmu-vmsa: Remove stage 2 PTE bits definitions
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>
2014-05-26 11:22:25 +02:00
Laurent Pinchart dda7c2e4d3 iommu/ipmmu-vmsa: Support 2MB mappings
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>
2014-05-26 11:22:25 +02:00
Laurent Pinchart 9009f25659 iommu/ipmmu-vmsa: Rewrite page table management
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>
2014-05-26 11:22:24 +02:00
Laurent Pinchart 14e5123ee9 iommu/ipmmu-vmsa: PMD is never folded, PUD always is
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>
2014-05-26 11:22:24 +02:00
Laurent Pinchart 4ee3cc9c4a iommu/ipmmu-vmsa: Set the PTE contiguous hint bit when possible
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>
2014-05-26 11:22:24 +02:00
Laurent Pinchart bc28191b16 iommu/ipmmu-vmsa: Define driver-specific page directory sizes
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>
2014-05-26 11:22:23 +02:00
Laurent Pinchart 251dac410d iommu/ipmmu-vmsa: Fix the supported page sizes
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>
2014-05-26 11:22:23 +02:00
Laurent Pinchart 192d204570 iommu/ipmmu-vmsa: Refactor micro-TLB lookup
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>
2014-05-26 11:18:22 +02:00
Laurent Pinchart d25a2a16f0 iommu: Add driver for Renesas VMSA-compatible IPMMU
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-05-26 11:18:21 +02:00