[PATCH v4 4/7] iommu/msm: announce supported page sizes
From: Ohad Ben-Cohen <hidden>
Date: 2011-10-17 11:30:10
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> Acked-by: David Brown <redacted> Cc: Stepan Moskovchenko <redacted> --- drivers/iommu/msm_iommu.c | 6 +++++- 1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/drivers/iommu/msm_iommu.c b/drivers/iommu/msm_iommu.c
index 13718d9..08a90b8 100644
--- a/drivers/iommu/msm_iommu.c
+++ b/drivers/iommu/msm_iommu.c@@ -42,6 +42,9 @@ __asm__ __volatile__ ( \ #define RCP15_PRRR(reg) MRC(reg, p15, 0, c10, c2, 0) #define RCP15_NMRR(reg) MRC(reg, p15, 0, c10, c2, 1) +/* bitmap of the page sizes currently supported */ +#define MSM_IOMMU_PGSIZES (SZ_4K | SZ_64K | SZ_1M | SZ_16M) + static int msm_iommu_tex_class[4]; DEFINE_SPINLOCK(msm_iommu_lock);
@@ -679,7 +682,8 @@ static struct iommu_ops msm_iommu_ops = { .map = msm_iommu_map, .unmap = msm_iommu_unmap, .iova_to_phys = msm_iommu_iova_to_phys, - .domain_has_cap = msm_iommu_domain_has_cap + .domain_has_cap = msm_iommu_domain_has_cap, + .pgsize_bitmap = MSM_IOMMU_PGSIZES, }; static int __init get_tex_class(int icp, int ocp, int mt, int nos)
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1.7.4.1