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powerpc/iommu: Add it_page_shift field to determine iommu page size

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This patch adds a it_page_shift field to struct iommu_table and
initiliases it to 4K for all platforms.

Signed-off-by: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Alistair Popple
2013-12-09 18:17:02 +11:00
committed by Benjamin Herrenschmidt
parent e589a4404f
commit 3a553170d3
7 changed files with 24 additions and 13 deletions
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5
arch/powerpc/platforms/pasemi/iommu.c
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@@ -138,8 +138,11 @@ static void iommu_table_iobmap_setup(void)
pr_debug(" -> %s\n", __func__);
iommu_table_iobmap.it_busno = 0;
iommu_table_iobmap.it_offset = 0;
iommu_table_iobmap.it_page_shift = IOBMAP_PAGE_SHIFT;
/* it_size is in number of entries */
iommu_table_iobmap.it_size = 0x80000000 >> IOBMAP_PAGE_SHIFT;
iommu_table_iobmap.it_size =
0x80000000 >> iommu_table_iobmap.it_page_shift;
/* Initialize the common IOMMU code */
iommu_table_iobmap.it_base = (unsigned long)iob_l2_base;