From: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
To: linux-snps-arc@lists.infradead.org,
Vineet Gupta <Vineet.Gupta1@synopsys.com>
Cc: linux-kernel@vger.kernel.org,
Alexey Brodkin <Alexey.Brodkin@synopsys.com>,
Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Subject: [PATCH v2 0/4] ARC: handle DSP presence in HW
Date: Thu, 5 Mar 2020 23:02:48 +0300 [thread overview]
Message-ID: <20200305200252.14278-1-Eugeniy.Paltsev@synopsys.com> (raw)
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)
Changes v1->v2:
* use r10:r11 register pair as a scratch for ASM code instead of
r58:r59
* reset DSP_CTRL to value suitable for kernel also in case of
DSP for userspcae enabled
* Use "Ir" instead of "I" parameter modifier to inline ASM
to give compiler wiggle room.
* Save / restore ACC0_GLO, ACC0_GHI only in case of context
switch
* Don't define additional options in headers to not introduce
explicit include dependencies
* Mode DSP config check to DSP code itself
* Minor fixes
Eugeniy Paltsev (4):
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 | 50 +++++++++-
arch/arc/include/asm/arcregs.h | 26 +++++
arch/arc/include/asm/asserts.h | 34 +++++++
arch/arc/include/asm/dsp-impl.h | 150 +++++++++++++++++++++++++++++
arch/arc/include/asm/dsp.h | 29 ++++++
arch/arc/include/asm/entry-arcv2.h | 6 ++
arch/arc/include/asm/processor.h | 4 +
arch/arc/include/asm/ptrace.h | 3 +
arch/arc/include/asm/switch_to.h | 2 +
arch/arc/kernel/asm-offsets.c | 4 +
arch/arc/kernel/head.S | 4 +
arch/arc/kernel/setup.c | 34 ++++---
12 files changed, 332 insertions(+), 14 deletions(-)
create mode 100644 arch/arc/include/asm/asserts.h
create mode 100644 arch/arc/include/asm/dsp-impl.h
create mode 100644 arch/arc/include/asm/dsp.h
--
2.21.1
next reply other threads:[~2020-03-05 20:03 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-05 20:02 Eugeniy Paltsev [this message]
2020-03-05 20:02 ` [PATCH v2 1/4] ARC: add helpers to sanitize config options Eugeniy Paltsev
2020-03-06 22:55 ` Vineet Gupta
2020-03-05 20:02 ` [PATCH v2 2/4] ARC: handle DSP presence in HW Eugeniy Paltsev
2020-03-07 0:12 ` Vineet Gupta
2020-03-10 12:18 ` Eugeniy Paltsev
2020-03-10 12:19 ` Eugeniy Paltsev
2020-03-05 20:02 ` [PATCH v2 3/4] ARC: add support for DSP-enabled userspace applications Eugeniy Paltsev
2020-03-11 19:13 ` Vineet Gupta
2020-03-05 20:02 ` [PATCH v2 4/4] ARC: allow userspace DSP applications to use AGU extensions Eugeniy Paltsev
2020-03-11 19:15 ` Vineet Gupta
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