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For clarity it would be nice to factor cpucap manipulation out of
<asm/cpufeature.h>, and the obvious place would be <asm/cpucap.h>, but
this will clash somewhat with <generated/asm/cpucaps.h>.
Rename <generated/asm/cpucaps.h> to <generated/asm/cpucap-defs.h>,
matching what we do for <generated/asm/sysreg-defs.h>, and introduce a
new <asm/cpucaps.h> which includes the generated header.
Subsequent patches will fill out <asm/cpucaps.h>.
There should be no functional change as a result of this patch.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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The lengthiest capability is `WORKAROUND_TRBE_OVERWRITE_FILL_MODE` and
its length is 35 characters so increase the width of left justified
strings to 40 and adjust the tab space for `ARM64_NCAPS` accordingly.
Now the generated cpucaps.h is properly formatted.
Signed-off-by: Prathu Baronia <quic_pbaronia@quicinc.com>
Link: https://lore.kernel.org/r/20230527123900.680520-1-quic_pbaronia@quicinc.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Anshuman suggested this.
Suggested-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20210513151819.12526-1-broonie@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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The arm64 code allocates an internal constant to every CPU feature it can
detect, distinct from the public hwcap numbers we use to expose some
features to userspace. Currently this is maintained manually which is an
irritating source of conflicts when working on new features, to avoid this
replace the header with a simple text file listing the names we've assigned
and sort it to minimise conflicts.
As part of doing this we also do the Kbuild hookup required to hook up
an arch tools directory and to generate header files in there.
This will result in a renumbering and reordering of the existing constants,
since they are all internal only the values should not be important. The
reordering will impact the order in which some steps in enumeration handle
features but the algorithm is not intended to depend on this and I haven't
seen any issues when testing. Due to the UAO cpucap having been removed in
the past we end up with ARM64_NCAPS being 1 smaller than it was before.
Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20210428121231.11219-1-broonie@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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