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author | Michael Ellerman <michael@ellerman.id.au> | 2008-01-30 01:14:02 +1100 |
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committer | Paul Mackerras <paulus@samba.org> | 2008-01-31 12:11:11 +1100 |
commit | c96b51265ad4658eb82fd4379c98b9beb98f99d0 (patch) | |
tree | 93a65c18abec1f6f2be43a7803c91052d9779849 /arch/powerpc/platforms/cell/iommu.c | |
parent | 41347917280bcd96619441dae20507711608b4b8 (diff) | |
download | kernel_samsung_smdk4412-c96b51265ad4658eb82fd4379c98b9beb98f99d0.zip kernel_samsung_smdk4412-c96b51265ad4658eb82fd4379c98b9beb98f99d0.tar.gz kernel_samsung_smdk4412-c96b51265ad4658eb82fd4379c98b9beb98f99d0.tar.bz2 |
[POWERPC] Split out the ioid fetching/checking logic
Split out the ioid fetching and checking logic so we can use it elsewhere
in a subsequent patch.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/platforms/cell/iommu.c')
-rw-r--r-- | arch/powerpc/platforms/cell/iommu.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/arch/powerpc/platforms/cell/iommu.c b/arch/powerpc/platforms/cell/iommu.c index 950d432..7316226 100644 --- a/arch/powerpc/platforms/cell/iommu.c +++ b/arch/powerpc/platforms/cell/iommu.c @@ -443,25 +443,36 @@ static struct iommu_window *find_window(struct cbe_iommu *iommu, } #endif +static inline u32 cell_iommu_get_ioid(struct device_node *np) +{ + const u32 *ioid; + + ioid = of_get_property(np, "ioid", NULL); + if (ioid == NULL) { + printk(KERN_WARNING "iommu: missing ioid for %s using 0\n", + np->full_name); + return 0; + } + + return *ioid; +} + static struct iommu_window * __init cell_iommu_setup_window(struct cbe_iommu *iommu, struct device_node *np, unsigned long offset, unsigned long size, unsigned long pte_offset) { struct iommu_window *window; - const unsigned int *ioid; + u32 ioid; - ioid = of_get_property(np, "ioid", NULL); - if (ioid == NULL) - printk(KERN_WARNING "iommu: missing ioid for %s using 0\n", - np->full_name); + ioid = cell_iommu_get_ioid(np); window = kmalloc_node(sizeof(*window), GFP_KERNEL, iommu->nid); BUG_ON(window == NULL); window->offset = offset; window->size = size; - window->ioid = ioid ? *ioid : 0; + window->ioid = ioid; window->iommu = iommu; window->pte_offset = pte_offset; |