From mboxrd@z Thu Jan 1 00:00:00 1970 From: ohad@wizery.com (Ohad Ben-Cohen) Date: Fri, 16 Sep 2011 20:51:43 +0300 Subject: [PATCH v3 3/6] iommu/msm: announce supported page sizes In-Reply-To: <1316195506-9777-1-git-send-email-ohad@wizery.com> References: <1316195506-9777-1-git-send-email-ohad@wizery.com> Message-ID: <1316195506-9777-4-git-send-email-ohad@wizery.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 Cc: David Brown Cc: Stepan Moskovchenko --- 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