Two header files exist in mach-msm's include/mach directory that
are only used by the MSM iommu driver. Move these files to the
iommu driver directory and prefix them with "msm_". This allows
us to compile the MSM iommu driver on multi-platform kernels.
Acked-by: NJoerg Roedel <joro@8bytes.org>
Cc: Stepan Moskovchenko <stepanm@codeaurora.org>
Signed-off-by: NStephen Boyd <sboyd@codeaurora.org>
Signed-off-by: NDavid Brown <davidb@codeaurora.org>

Remove the depencency on the IOMMU IDR register, as it may
not be accessible depending on the security configuraton.
This involves moving the NCB field of IDR into the platform
data.
Signed-off-by: NStepan Moskovchenko <stepanm@codeaurora.org>
Signed-off-by: NDavid Brown <davidb@codeaurora.org>

Clean up the clock control code in the probe calls, and add
support for controlling the clock for the IOMMU bus
interconnect. With the (proper) clock driver in place, the
clock control logic in the probe function can be made much
cleaner since it does not have to deal with the placeholder
driver anymore.
Signed-off-by: NStepan Moskovchenko <stepanm@codeaurora.org>
Reviewed-by: NTrilok Soni <tsoni@codeaurora.org>
Signed-off-by: NDavid Brown <davidb@codeaurora.org>

Add clock control to the IOMMU driver. The IOMMU bus clock
(and potentially an AXI clock) need to be on to gain access
to IOMMU registers. Actively control these clocks when
needed instead of leaving them on.
Signed-off-by: NStepan Moskovchenko <stepanm@codeaurora.org>
Signed-off-by: NDavid Brown <davidb@codeaurora.org>

Add the register field definitions and memory attribute
definitions that will be needed to support IOMMU
transactions with cache-coherent memory access.
Signed-off-by: NStepan Moskovchenko <stepanm@codeaurora.org>
Signed-off-by: NDaniel Walker <dwalker@codeaurora.org>

On msm8x60, the MID field on the AXI connection to the
IOMMU can be up to five bits wide. Thus, allow the IOMMU
context platform data to map up to 32 MIDs.
Signed-off-by: NStepan Moskovchenko <stepanm@codeaurora.org>
Signed-off-by: NDaniel Walker <dwalker@codeaurora.org>

Add support for the IOMMUs found on the upcoming Qualcomm
MSM8x60 chips. These IOMMUs allow virtualization of the
address space used by most of the multimedia cores on these
chips.
Signed-off-by: NStepan Moskovchenko <stepanm@codeaurora.org>
Signed-off-by: NDaniel Walker <dwalker@codeaurora.org>