From: Sherry Sun <sherry.sun@nxp.com>
To: sudeep.dutt@intel.com, ashutosh.dixit@intel.com, arnd@arndb.de,
gregkh@linuxfoundation.org, wang.yi59@zte.com.cn,
huang.zijiang@zte.com.cn, rikard.falkeborn@gmail.com,
lee.jones@linaro.org, mst@redhat.com
Cc: linux-kernel@vger.kernel.org, linux-imx@nxp.com
Subject: [PATCH 4/5] misc: vop: set VIRTIO_F_ACCESS_PLATFORM for nocoherent platform
Date: Fri, 25 Sep 2020 15:26:29 +0800 [thread overview]
Message-ID: <20200925072630.8157-5-sherry.sun@nxp.com> (raw)
In-Reply-To: <20200925072630.8157-1-sherry.sun@nxp.com>
Set VIRTIO_F_ACCESS_PLATFORM feature for nocoherent platform, since
it needs the DMA API for virtio.
Signed-off-by: Sherry Sun <sherry.sun@nxp.com>
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
---
drivers/misc/mic/vop/vop_main.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/misc/mic/vop/vop_main.c b/drivers/misc/mic/vop/vop_main.c
index d3645122c983..d609f0dc6124 100644
--- a/drivers/misc/mic/vop/vop_main.c
+++ b/drivers/misc/mic/vop/vop_main.c
@@ -125,6 +125,9 @@ static void vop_transport_features(struct virtio_device *vdev)
* creates virtio rings on preallocated memory.
*/
__virtio_clear_bit(vdev, VIRTIO_F_RING_PACKED);
+
+ if (!dev_is_dma_coherent(vdev->dev.parent))
+ __virtio_set_bit(vdev, VIRTIO_F_ACCESS_PLATFORM);
}
static int vop_finalize_features(struct virtio_device *vdev)
--
2.17.1
next prev parent reply other threads:[~2020-09-25 7:27 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-25 7:26 [PATCH 0/5] Add noncoherent platform support for vop driver Sherry Sun
2020-09-25 7:26 ` [PATCH 1/5] misc: vop: change the way of allocating vring for noncoherent platform Sherry Sun
2020-09-25 12:16 ` Greg KH
2020-09-27 7:06 ` Sherry Sun
2020-09-26 7:50 ` Christoph Hellwig
2020-09-27 7:58 ` Sherry Sun
2020-09-28 6:09 ` Christoph Hellwig
2020-09-28 10:10 ` Sherry Sun
2020-09-25 7:26 ` [PATCH 2/5] misc: vop: change the way of allocating used ring Sherry Sun
2020-09-25 7:26 ` [PATCH 3/5] misc: vop: simply return the saved dma address instead of virt_to_phys Sherry Sun
2020-09-25 12:17 ` Greg KH
2020-09-27 7:23 ` Sherry Sun
2020-09-25 7:26 ` Sherry Sun [this message]
2020-09-25 12:16 ` [PATCH 4/5] misc: vop: set VIRTIO_F_ACCESS_PLATFORM for nocoherent platform Greg KH
2020-09-27 7:20 ` Sherry Sun
2020-09-26 7:51 ` Christoph Hellwig
2020-09-27 8:05 ` Sherry Sun
2020-09-28 6:09 ` Christoph Hellwig
2020-09-28 9:57 ` Sherry Sun
2020-09-25 7:26 ` [PATCH 5/5] misc: vop: mapping kernel memory to user space as noncached Sherry Sun
2020-09-25 11:25 ` [PATCH 0/5] Add noncoherent platform support for vop driver Arnd Bergmann
2020-09-27 5:07 ` Sherry Sun
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=20200925072630.8157-5-sherry.sun@nxp.com \
--to=sherry.sun@nxp.com \
--cc=arnd@arndb.de \
--cc=ashutosh.dixit@intel.com \
--cc=gregkh@linuxfoundation.org \
--cc=huang.zijiang@zte.com.cn \
--cc=lee.jones@linaro.org \
--cc=linux-imx@nxp.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mst@redhat.com \
--cc=rikard.falkeborn@gmail.com \
--cc=sudeep.dutt@intel.com \
--cc=wang.yi59@zte.com.cn \
/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
all inboxes | Powered by JetHome®