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iommu/amd: Set AMD iommu callbacks for platform bus driver 

AMD has more drivers will use ACPI to platform bus driver later,
all those devices need iommu support, for example: eMMC driver.

For latest AMD eMMC controller, it will utilize sdhci-acpi.c driver,
which will rely on platform bus to match device and driver, where we
will set 'dev' of struct platform_device as map_sg parameter passing
to iommu driver for DMA request, so the iommu-ops are needed on the
platform bus.

Signed-off-by: Wan Zongshun <Vincent.Wan@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
hifive-unleashed-5.1
Wan Zongshun 2016-05-10 09:21:01 -04:00 committed by Joerg Roedel
parent 5edb56491d
commit 0076cd3d06
1 changed files with 4 additions and 0 deletions
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4
drivers/iommu/amd_iommu.c
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@ -21,6 +21,7 @@
#include <linux/pci.h>
#include <linux/acpi.h>
#include <linux/amba/bus.h>
#include <linux/platform_device.h>
#include <linux/pci-ats.h>
#include <linux/bitmap.h>
#include <linux/slab.h>
@ -2958,6 +2959,9 @@ int __init amd_iommu_init_api(void)
if (err)
return err;
#endif
err = bus_set_iommu(&platform_bus_type, &amd_iommu_ops);
if (err)
return err;
return 0;
}