Do not return a context pointer if the context does not
have driver data associated with it to ensure that IOMMU
functions fail gracefully on targets where the IOMMU
hardware could not be found.
Change-Id: Ibf915251a4a133c2baaf9fb5b01145fb3c419347
Signed-off-by: Stepan Moskovchenko <stepanm@codeaurora.org>
SMMU v2 is based off the ARM SMMU architecture specification.
The SMMUs primary purpose is to provide virtual address translation
and abstract the physical view of system memory. In doing so,
discontiguous physical memory appears virtually contiguous to
hardware cores.
The SMMU instances are now represented in device tree with each
instance having multiple translation context banks.
Change-Id: If4733500e5226984d26f1c8a97ae98603c2f75f9
Signed-off-by: Sathish Ambley <sambley@codeaurora.org>
Provide the ability to report IOMMU fault events through
the IOMMU API. The driver will fall back on the previous
behavior of printing the fault information registers if no
domain fault handler is registered, or if the handler
returns -ENOSYS.
Change-Id: I9144e9b4bba117b67c7d81609e986ea716b34882
Signed-off-by: Stepan Moskovchenko <stepanm@codeaurora.org>
Fail to look up IOMMU context devices if there is no driver
data associated with them, as this would imply that the
device did not pass the hardware sanity check.
Change-Id: If2998a96dea9342850092344c4ad70eebf965229
Signed-off-by: Stepan Moskovchenko <stepanm@codeaurora.org>
Support for the proprietary clk_set_min_rate() API is being removed from
the clock driver. Replace it with a clk_round_rate() and clk_set_rate().
Change-Id: Icd62a8768d99cf007cf899c705626f8eacbaa7c8
Signed-off-by: Matt Wagantall <mattw@codeaurora.org>
A threaded interrupt handler for IOMMU page faults will
allow the use of the new clock APIs from the interrupt
handler.
Change-Id: I381df3974daa7fbc4bc4ec0558434959597b4f24
Signed-off-by: Stepan Moskovchenko <stepanm@codeaurora.org>
With the secure environment configuration in place, switch
to using the non-secure interrupts for page faults.
Change-Id: I133e82b5c3c10a408fb0894abfe81621fd2cdfd7
Signed-off-by: Stepan Moskovchenko <stepanm@codeaurora.org>
Add a new platform data in iommu devices to indicate whether ttbr1
should be used which also dictates how the address space should be
split between ttbr0 and ttbr1.
Change-Id: Iab3aac74256bd4d49f47f89e6638f014e6e539e9
Signed-off-by: Shubhraprakash Das <sadas@codeaurora.org>
Reuse ASID values within an SMMU if multiple contexts
within that SMMU are using the same page table. This
should improve TLB performance by eliminating duplicate
TLB entries for the same page table but with different ASID
tags.
Change-Id: I61e3c4c3edcbc42abab0e64dcecab3d8744dc3d6
Signed-off-by: Stepan Moskovchenko <stepanm@codeaurora.org>
Add the human readable name of the iommu device to drvdata.
This makes debugging iommu page faults much easier since
the faulting device name is immediately present. The
context where the fault occured can the be derived from
existing information.
Change-Id: I63b6f05dea155e40f1176f2bebb5eb3cee69a412
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Use the relaxed versions of readl/writel for IOMMU register
access, inserting barriers where appropriate.
Change-Id: I06b54c3eb327a7fe3d9d3850d7906164b96f4363
Signed-off-by: Stepan Moskovchenko <stepanm@codeaurora.org>
This should ease finding similarities with different platforms,
with the intention of solving problems once in a generic framework
which everyone can use.
Compile-tested for MSM8X60.
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Acked-by: David Brown <davidb@codeaurora.org>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-06-21 10:48:50 +02:00
Renamed from arch/arm/mach-msm/iommu_dev.c (Browse further)
