From: Borislav Petkov <bp@alien8.de>
To: Huacai Chen <chenhuacai@gmail.com>
Cc: Sergei Shtylyov <sshtylyov@mvista.com>,
Ralf Baechle <ralf@linux-mips.org>,
linux-mips@linux-mips.org, Fuxin Zhang <zhangfx@lemote.com>,
Zhangjin Wu <wuzhangjin@gmail.com>,
Huacai Chen <chenhc@lemote.com>, Hongliang Tao <taohl@lemote.com>,
Hua Yan <yanh@lemote.com>,
linux-ide@vger.kernel.org
Subject: Re: [PATCH 09/14] ata: Use 32bit DMA in AHCI for Loongson 3.
Date: Mon, 18 Jun 2012 16:52:31 +0200 [thread overview]
Message-ID: <20120618145231.GA4377@x1.osrc.amd.com> (raw)
In-Reply-To: <CAAhV-H5g2Y81fr=yU76RHDfzDSxG_7GpTs=RZm8ha8JbzHnfzQ@mail.gmail.com>
On Mon, Jun 18, 2012 at 06:41:58PM +0800, Huacai Chen wrote:
> Ohh, this is because Loongson-3 has a hardware bug, when the HT
> controller receive a 64-bit DMA address, the high bits is lost. So set
> to 32-bit DMA is just a workaround.
Ok, this should definitely go into the commit message of your patch then
since it explains why you need that flag set.
Thanks.
--
Regards/Gruss,
Boris.
next prev parent reply other threads:[~2012-06-18 14:52 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-15 8:09 [PATCH 00/14] MIPS: Add Loongson-3 based machines support Huacai Chen
2012-06-15 8:09 ` [PATCH 01/14] MIPS: Loongson: Add basic Loongson 3 CPU support Huacai Chen
2012-06-15 15:59 ` David Daney
2012-06-15 16:13 ` Ralf Baechle
2012-06-16 12:49 ` huacai chen
2012-06-15 8:09 ` [PATCH 02/14] MIPS: Loongson 3: Add Lemote-3A machtypes definition Huacai Chen
2012-06-15 8:09 ` [PATCH 03/14] MIPS: Loongson: Make Loongson 3 to use BCD format for RTC Huacai Chen
2012-06-15 8:09 ` [PATCH 04/14] MIPS: Loongson: Add UEFI-like firmware interface support Huacai Chen
2012-06-15 8:09 ` [PATCH 05/14] MIPS: Loongson 3: Add HT-linked PCI support Huacai Chen
2012-06-15 14:34 ` LIU Qi
2012-06-15 8:09 ` [PATCH 06/14] MIPS: Loongson 3: Add IRQ init and dispatch support Huacai Chen
2012-06-15 14:32 ` LIU Qi
2012-06-15 8:09 ` [PATCH 07/14] MIPS: Loongson 3: Add serial port support Huacai Chen
2012-06-15 9:50 ` Arnaud Patard
2012-06-15 11:44 ` huacai chen
2012-06-15 8:09 ` [PATCH 08/14] MIPS: Loongson: Add swiotlb to support big memory (>4GB) Huacai Chen
2012-06-15 8:09 ` [PATCH 09/14] ata: Use 32bit DMA in AHCI for Loongson 3 Huacai Chen
2012-06-15 10:04 ` Sergei Shtylyov
2012-06-15 12:42 ` huacai chen
2012-06-17 12:05 ` Borislav Petkov
2012-06-18 9:04 ` huacai chen
2012-06-18 10:10 ` Borislav Petkov
2012-06-18 10:41 ` Huacai Chen
2012-06-18 14:52 ` Borislav Petkov [this message]
2012-06-15 8:09 ` [PATCH 10/14] drm/radeon: Make radeon card usable for Loongson Huacai Chen
2012-06-15 14:28 ` LIU Qi
2012-06-15 8:09 ` [PATCH 11/14] ALSA: Make hda sound " Huacai Chen
2012-06-15 8:09 ` [PATCH 12/14] MIPS: Loongson 3: Add Loongson-3 SMP support Huacai Chen
2012-06-15 8:10 ` [PATCH 13/14] MIPS: Loongson 3: Add CPU Hotplug support Huacai Chen
2012-06-15 8:10 ` [PATCH 14/14] MIPS: Loongson: Add a Loongson 3 default config file Huacai Chen
2012-06-15 14:37 ` LIU Qi
2012-06-16 12:52 ` huacai chen
2012-06-15 13:10 ` [PATCH 00/14] MIPS: Add Loongson-3 based machines support LIU Qi
2012-06-16 12:46 ` huacai chen
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