[RFC 0/5] ARC: handle DSP presence in HW

[Eugeniy Paltsev]

Arc processors may have DSP extension which is optional.
In this patch series we:
* Handle issues caused by DSP extension presence in HW
* Add optional support for DSP-enabled applications in
  userspace (with optional AGU extension support)
* Do minor cleanups

Eugeniy Paltsev (5):
  ARC: pt_regs: remove hardcoded registers offset
  ARC: add helpers to sanitize config options
  ARC: handle DSP presence in HW
  ARC: add support for DSP-enabled userspace applications
  ARC: allow userspace DSP applications to use AGU extensions

 arch/arc/Kconfig                   |  39 +++++++-
 arch/arc/include/asm/arcregs.h     |  26 ++++++
 arch/arc/include/asm/dsp-impl.h    | 141 +++++++++++++++++++++++++++++
 arch/arc/include/asm/dsp.h         |  50 ++++++++++
 arch/arc/include/asm/entry-arcv2.h |  14 ++-
 arch/arc/include/asm/processor.h   |   4 +
 arch/arc/include/asm/ptrace.h      |   4 +
 arch/arc/include/asm/switch_to.h   |   2 +
 arch/arc/kernel/asm-offsets.c      |  16 ++++
 arch/arc/kernel/head.S             |   4 +
 arch/arc/kernel/setup.c            |  47 +++++++---
 11 files changed, 329 insertions(+), 18 deletions(-)
 create mode 100644 arch/arc/include/asm/dsp-impl.h
 create mode 100644 arch/arc/include/asm/dsp.h

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2.21.0