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f2d9848aeb
Due to erratum #582743, the Marvell Armada-AP806 can't access 64bit to ARM SMMUv2 registers. Provide implementation relevant hooks: - split the writeq/readq to two accesses of writel/readl. - mask the MMU_IDR2.PTFSv8 fields to not use AArch64 format (but only AARCH32_L) since with AArch64 format 32 bits access is not supported. Note that most 64-bit registers like TTBRn can be accessed as two 32-bit halves without issue, and AArch32 format ensures that the register writes which must be atomic (for TLBI etc.) need only be 32-bit. Signed-off-by: Hanna Hawa <hannah@marvell.com> Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com> Signed-off-by: Tomasz Nowicki <tn@semihalf.com> Reviewed-by: Robin Murphy <robin.murphy@arm.com> Link: https://lore.kernel.org/r/20200715070649.18733-3-tn@semihalf.com Signed-off-by: Will Deacon <will@kernel.org> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.