linux-kernel - [PATCH] iovmm: IVA2 MMU range is from 0x11000000 to 0xFFFFFFFF

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Date:	Thu,  7 Oct 2010 13:43:41 -0500
From:	Fernando Guzman Lugo <x0095840@...com>
To:	<Hiroshi.DOYU@...ia.com>
Cc:	<felipe.contreras@...ia.com>, <ameya.palande@...ia.com>,
	<david.cohen@...ia.com>, <linux-kernel@...r.kernel.org>,
	<andy.shevchenko@...il.com>, <linux-omap@...r.kernel.org>,
	Fernando Guzman Lugo <x0095840@...com>
Subject: [PATCH] iovmm: IVA2 MMU range is from 0x11000000 to 0xFFFFFFFF

IV2 MMU capable addresses start from 0x11000000

Signed-off-by: Fernando Guzman Lugo <x0095840@...com>
---
 arch/arm/plat-omap/iovmm.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/arch/arm/plat-omap/iovmm.c b/arch/arm/plat-omap/iovmm.c
index 75965a1..c0344f4 100644
--- a/arch/arm/plat-omap/iovmm.c
+++ b/arch/arm/plat-omap/iovmm.c
@@ -286,7 +286,12 @@ static struct iovm_struct *alloc_iovm_area(struct iommu *obj, u32 da,
 		/*
 		 * Reserve the first page for NULL
 		 */
-		start = PAGE_SIZE;
+		if (!strcmp(obj->name, "iva2"))
+			/* IVA2 MMU control starts from 0x11000000 */
+			start = 0x11000000;
+		else
+			start = PAGE_SIZE;
+
 		if (flags & IOVMF_LINEAR)
 			alignement = iopgsz_max(bytes);
 		start = roundup(start, alignement);
-- 
1.6.3.3

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