From mboxrd@z Thu Jan 1 00:00:00 1970 From: Valentine Date: Wed, 29 Jan 2014 09:38:29 +0000 Subject: Re: [PATCH RFC 0/2] ARM: shmobile: lager: Enable DMA bounce for PCI Message-Id: <52E8CC15.5080105@cogentembedded.com> List-Id: References: <1390935213-12896-1-git-send-email-valentine.barshak@cogentembedded.com> In-Reply-To: <1390935213-12896-1-git-send-email-valentine.barshak@cogentembedded.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-sh@vger.kernel.org On 01/29/2014 10:45 AM, Simon Horman wrote: > On Tue, Jan 28, 2014 at 10:53:31PM +0400, Valentine Barshak wrote: >> This enables DMA bounce for PCI since the controller does >> not support more than 2G PCI-AHB memory window. >> The problems with DMA transfers can be observed when >> setting 2G/2G user/kernel memory split model >> (CONFIG_VMSPLIT_2G=y) >> These patches help to avoid it. > > Are these patches compatible with other user/kernel splits? > Yes, they are. >> >> The patches should be applied on top of the >> "[PATCH V3 0/3] ARM: shmobile: lager: Add USB support" series at >> http://marc.info/?l=linux-sh&m9060253506760&w=2 >> >> Valentine Barshak (2): >> ARM: shmobile: lager: Use DMA bounce for PCI devices >> ARM: shmobile: lager: Increase the size of ARM corehent DMA pool >> >> arch/arm/boot/dts/r8a7790-lager.dts | 2 +- >> arch/arm/mach-shmobile/Kconfig | 2 ++ >> arch/arm/mach-shmobile/board-lager.c | 38 ++++++++++++++++++++++++++++++++++++ >> 3 files changed, 41 insertions(+), 1 deletion(-) >> >> -- >> 1.8.3.1 >> >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-sh" in >> the body of a message to majordomo@vger.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html >>