From mboxrd@z Thu Jan 1 00:00:00 1970 From: m.szyprowski@samsung.com (Marek Szyprowski) Date: Tue, 05 Aug 2014 12:47:38 +0200 Subject: [PATCH 10/29] drivers: add DRIVER_HAS_OWN_IOMMU_MANAGER flag In-Reply-To: <1407235677-26324-1-git-send-email-m.szyprowski@samsung.com> References: <1407235677-26324-1-git-send-email-m.szyprowski@samsung.com> Message-ID: <1407235677-26324-11-git-send-email-m.szyprowski@samsung.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org This patch adds a new flags for device drivers. This flag instructs kernel that the device driver does it own management of IOMMU assisted IO address space translations, so no default dma-mapping structures should be initialized. Signed-off-by: Marek Szyprowski --- include/linux/device.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/device.h b/include/linux/device.h index 5f4ff02..2e62371 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -253,6 +253,8 @@ struct device_driver { /* disables bind/unbind via sysfs */ #define DRIVER_SUPPRESS_BIND_ATTRS (1 << 0) +/* driver uses own methods to manage IO address space */ +#define DRIVER_HAS_OWN_IOMMU_MANAGER (1 << 1) extern int __must_check driver_register(struct device_driver *drv); extern void driver_unregister(struct device_driver *drv); -- 1.9.2