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| author | Guzman Lugo, Fernando <x0095840@ti.com> | 2010-12-15 00:54:03 +0000 |
|---|---|---|
| committer | Hari Kanigeri <h-kanigeri2@ti.com> | 2010-12-15 11:29:10 -0600 |
| commit | c7f4ab26e3bcdaeb3e19ec658e3ad9092f1a6ceb (patch) | |
| tree | b80f93995d8e9daa1f53a18c105e8d532102cd21 /arch/arm/plat-omap/iommu.c | |
| parent | 9205a109fbeee180254bb5a4020eb71d50735944 (diff) | |
| download | lwn-c7f4ab26e3bcdaeb3e19ec658e3ad9092f1a6ceb.tar.gz lwn-c7f4ab26e3bcdaeb3e19ec658e3ad9092f1a6ceb.zip | |
OMAP: iommu: create new api to set valid da range
Some IOMMUs cannot use the whole 0x0 - 0xFFFFFFFF range.
With this new API the valid range can be set.
Signed-off-by: Fernando Guzman Lugo <x0095840@ti.com>
Acked-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
Diffstat (limited to 'arch/arm/plat-omap/iommu.c')
| -rw-r--r-- | arch/arm/plat-omap/iommu.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/arm/plat-omap/iommu.c b/arch/arm/plat-omap/iommu.c index 6cd151b31bc5..b1107c08da56 100644 --- a/arch/arm/plat-omap/iommu.c +++ b/arch/arm/plat-omap/iommu.c @@ -830,6 +830,28 @@ static int device_match_by_alias(struct device *dev, void *data) } /** + * iommu_set_da_range - Set a valid device address range + * @obj: target iommu + * @start Start of valid range + * @end End of valid range + **/ +int iommu_set_da_range(struct iommu *obj, u32 start, u32 end) +{ + + if (!obj) + return -EFAULT; + + if (end < start || !PAGE_ALIGN(start | end)) + return -EINVAL; + + obj->da_start = start; + obj->da_end = end; + + return 0; +} +EXPORT_SYMBOL_GPL(iommu_set_da_range); + +/** * iommu_get - Get iommu handler * @name: target iommu name **/ @@ -922,6 +944,8 @@ static int __devinit omap_iommu_probe(struct platform_device *pdev) obj->name = pdata->name; obj->dev = &pdev->dev; obj->ctx = (void *)obj + sizeof(*obj); + obj->da_start = pdata->da_start; + obj->da_end = pdata->da_end; mutex_init(&obj->iommu_lock); mutex_init(&obj->mmap_lock); |