From: Hans de Goede <hdegoede@redhat.com>
To: suravee.suthikulpanit@amd.com, tj@kernel.org, b.zolnierkie@samsung.com
Cc: lho@apm.com, tphan@apm.com, stripathi@apm.com,
linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] ahci: Check and set 64-bit DMA mask for platform AHCI driver
Date: Fri, 13 Jun 2014 22:21:10 +0200 [thread overview]
Message-ID: <539B5D36.7010201@redhat.com> (raw)
In-Reply-To: <1402594824-4151-2-git-send-email-suravee.suthikulpanit@amd.com>
Hi,
On 06/12/2014 07:40 PM, suravee.suthikulpanit@amd.com wrote:
> From: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
>
> The current platform AHCI driver does not set the dma_mask correctly
> for 64-bit DMA capable AHCI controller. This patch checks the AHCI
> capability bit and set the dma_mask and coherent_dma_mask accordingly.
>
> Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
> Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
> Reviewed-by: Hans de Goede <hdegoede@redhat.com>
I see no adverse effects from this on sunxi, please drop the
Reviewed-by: Hans .... tag and replace it with:
Tested-by: Hans de Goede <hdegoede@redhat.com>
Regards,
Hans
> ---
> drivers/ata/libahci_platform.c | 13 +++++++++++++
> 1 file changed, 13 insertions(+)
>
> diff --git a/drivers/ata/libahci_platform.c b/drivers/ata/libahci_platform.c
> index 3a5b4ed..a958a2b 100644
> --- a/drivers/ata/libahci_platform.c
> +++ b/drivers/ata/libahci_platform.c
> @@ -364,6 +364,19 @@ int ahci_platform_init_host(struct platform_device *pdev,
> ap->ops = &ata_dummy_port_ops;
> }
>
> + if (hpriv->cap & HOST_CAP_64) {
> + rc = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(64));
> + if (rc) {
> + rc = dma_coerce_mask_and_coherent(dev,
> + DMA_BIT_MASK(32));
> + if (rc) {
> + dev_err(dev, "Failed to enable 64-bit DMA.\n");
> + return rc;
> + }
> + dev_warn(dev, "Enable 32-bit DMA instead of 64-bit.\n");
> + }
> + }
> +
> rc = ahci_reset_controller(host);
> if (rc)
> return rc;
>
next prev parent reply other threads:[~2014-06-13 20:21 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-12 17:40 [PATCH 0/2] ahci: Add support for 64-bit DMA mask driver suravee.suthikulpanit
2014-06-12 17:40 ` [PATCH 1/2] ahci: Check and set 64-bit DMA mask for platform AHCI driver suravee.suthikulpanit
2014-06-12 17:47 ` Sergei Shtylyov
2014-06-13 12:45 ` Suravee Suthikulanit
2014-06-13 8:40 ` Hans de Goede
2014-06-13 20:21 ` Hans de Goede [this message]
2014-06-17 19:03 ` Tejun Heo
2014-06-12 17:40 ` [PATCH 2/2] ahci/xgene: Remove logic to set 64-bit DMA mask suravee.suthikulpanit
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=539B5D36.7010201@redhat.com \
--to=hdegoede@redhat.com \
--cc=b.zolnierkie@samsung.com \
--cc=lho@apm.com \
--cc=linux-ide@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=stripathi@apm.com \
--cc=suravee.suthikulpanit@amd.com \
--cc=tj@kernel.org \
--cc=tphan@apm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).