[PATCH v3 3/6] iommu/msm: announce supported page sizes
From: Ohad Ben-Cohen <hidden>
Date: 2011-09-16 17:52:27
Also in:
linux-omap, lkml
Subsystem:
arm/qualcomm mailing list, iommu subsystem, qualcomm iommu, the rest · Maintainers:
Joerg Roedel, Will Deacon, Rob Clark, Linus Torvalds
Let the IOMMU core know we support 4KiB, 64KiB, 1MiB and 16MiB page sizes. This way the IOMMU core can split any arbitrary-sized physically contiguous regions (that it needs to map) as needed. Signed-off-by: Ohad Ben-Cohen <redacted> Cc: David Brown <redacted> Cc: Stepan Moskovchenko <redacted> --- drivers/iommu/msm_iommu.c | 8 +++++++- 1 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/drivers/iommu/msm_iommu.c b/drivers/iommu/msm_iommu.c
index d1733f6..a4ed116 100644
--- a/drivers/iommu/msm_iommu.c
+++ b/drivers/iommu/msm_iommu.c@@ -676,6 +676,9 @@ fail: return 0; } +/* bitmap of the page sizes currently supported */ +static unsigned long msm_iommu_pgsizes = SZ_4K | SZ_64K | SZ_1M | SZ_16M; + static struct iommu_ops msm_iommu_ops = { .domain_init = msm_iommu_domain_init, .domain_destroy = msm_iommu_domain_destroy,
@@ -728,7 +731,10 @@ static void __init setup_iommu_tex_classes(void) static int __init msm_iommu_init(void) { setup_iommu_tex_classes(); - register_iommu(&msm_iommu_ops); + + /* we're only using the first 25 bits of the pgsizes bitmap */ + register_iommu_pgsize(&msm_iommu_ops, &msm_iommu_pgsizes, 25); + return 0; }
--
1.7.4.1