[PATCH 10/29] drivers: add DRIVER_HAS_OWN_IOMMU_MANAGER flag

Marek Szyprowski
2014-08-05T10:56:42Z

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 <m.szyprowski@samsung.com>
---
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