lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Mon, 18 Sep 2017 18:30:47 +0300 From: Mika Westerberg <mika.westerberg@...ux.intel.com> To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, "David S . Miller" <davem@...emloft.net> Cc: Andreas Noever <andreas.noever@...il.com>, Michael Jamet <michael.jamet@...el.com>, Yehezkel Bernat <yehezkel.bernat@...el.com>, Amir Levy <amir.jer.levy@...el.com>, Mario.Limonciello@...l.com, Lukas Wunner <lukas@...ner.de>, Andy Shevchenko <andriy.shevchenko@...ux.intel.com>, Mika Westerberg <mika.westerberg@...ux.intel.com>, linux-kernel@...r.kernel.org, netdev@...r.kernel.org Subject: [PATCH 14/16] thunderbolt: Add function to retrieve DMA device for the ring This is needed when Thunderbolt service drivers need to DMA map memory before it is passed down to the ring. Signed-off-by: Mika Westerberg <mika.westerberg@...ux.intel.com> Reviewed-by: Michael Jamet <michael.jamet@...el.com> Reviewed-by: Yehezkel Bernat <yehezkel.bernat@...el.com> --- include/linux/thunderbolt.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/include/linux/thunderbolt.h b/include/linux/thunderbolt.h index 9a63210d5084..d479a9e508cd 100644 --- a/include/linux/thunderbolt.h +++ b/include/linux/thunderbolt.h @@ -19,6 +19,7 @@ #include <linux/list.h> #include <linux/mutex.h> #include <linux/mod_devicetable.h> +#include <linux/pci.h> #include <linux/uuid.h> #include <linux/workqueue.h> @@ -582,4 +583,16 @@ static inline int tb_ring_tx(struct tb_ring *ring, struct ring_frame *frame) struct ring_frame *tb_ring_poll(struct tb_ring *ring); void tb_ring_poll_complete(struct tb_ring *ring); +/** + * tb_ring_dma_device() - Return device used for DMA mapping + * @ring: Ring whose DMA device is retrieved + * + * Use this function when you are mapping DMA for buffers that are + * passed to the ring for sending/receiving. + */ +static inline struct device *tb_ring_dma_device(struct tb_ring *ring) +{ + return &ring->nhi->pdev->dev; +} + #endif /* THUNDERBOLT_H_ */ -- 2.13.5
Powered by blists - more mailing lists