From: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
To: Kamal Dasu <kdasu.kdev@gmail.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>,
linux-mips@vger.kernel.org,
bcm-kernel-feedback-list@broadcom.com,
Ralf Baechle <ralf@linux-mips.org>,
Paul Burton <paulburton@kernel.org>,
James Hogan <jhogan@kernel.org>,
Jiaxun Yang <jiaxun.yang@flygoat.com>,
Huacai Chen <chenhc@lemote.com>,
Mike Rapoport <rppt@linux.ibm.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] MIPS: c-r4k: Invalidate BMIPS5000 ZSCM prefetch lines
Date: Mon, 16 Mar 2020 16:31:08 +0100 [thread overview]
Message-ID: <20200316153108.GA13674@alpha.franken.de> (raw)
In-Reply-To: <2388CCC9-8C2A-4907-988D-7A239DE0DD6C@gmail.com>
On Thu, Mar 12, 2020 at 11:09:35PM -0400, Kamal Dasu wrote:
> This is needed on dma reads from device.
ok.
> > On Mar 11, 2020, at 5:44 PM, Thomas Bogendoerfer <tsbogend@alpha.franken.de> wrote:
> >
> > On Wed, Mar 11, 2020 at 01:54:23PM -0700, Florian Fainelli wrote:
> >>> On 2/7/20 2:33 PM, Kamal Dasu wrote:
> >>> Zephyr secondary cache is 256KB, 128B lines. 32B sectors. A secondary cache
> >>> line can contain two instruction cache lines (64B), or four data cache
> >>> lines (32B). Hardware prefetch Cache detects stream access, and prefetches
> >>> ahead of processor access. Add support to invalidate BMIPS5000 cpu zephyr
> >>> secondary cache module (ZSCM) on DMA from device so that data returned is
> >>> coherent during DMA read operations.
> >>>
> >>> Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com>
Applied to mips-next.
Thomas.
--
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea. [ RFC1925, 2.3 ]
prev parent reply other threads:[~2020-03-16 15:39 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-07 22:33 [PATCH v2] MIPS: c-r4k: Invalidate BMIPS5000 ZSCM prefetch lines Kamal Dasu
2020-02-07 22:35 ` Florian Fainelli
2020-03-11 20:54 ` Florian Fainelli
2020-03-11 21:44 ` Thomas Bogendoerfer
2020-03-13 3:09 ` Kamal Dasu
2020-03-16 15:31 ` Thomas Bogendoerfer [this message]
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