linux-kernel - [PATCH 17/34] AMD IOMMU: add generic defines and structures for mapping code

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Date:	Thu, 26 Jun 2008 21:27:53 +0200
From:	Joerg Roedel <joerg.roedel@....com>
To:	tglx@...utronix.de, mingo@...hat.com
CC:	linux-kernel@...r.kernel.org, iommu@...ts.linux-foundation.org,
	bhavna.sarathy@....com, Sebastian.Biemueller@....com,
	robert.richter@....com, joro@...tes.org,
	Joerg Roedel <joerg.roedel@....com>
Subject: [PATCH 17/34] AMD IOMMU: add generic defines and structures for mapping code

This patch adds generic stuff used by the mapping and unmapping code for the
AMD IOMMU.

Signed-off-by: Joerg Roedel <joerg.roedel@....com>
---
 arch/x86/kernel/amd_iommu.c |   40 ++++++++++++++++++++++++++++++++++++++++
 1 files changed, 40 insertions(+), 0 deletions(-)
 create mode 100644 arch/x86/kernel/amd_iommu.c

diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
new file mode 100644
index 0000000..90392c7
--- /dev/null
+++ b/arch/x86/kernel/amd_iommu.c
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2007-2008 Advanced Micro Devices, Inc.
+ * Author: Joerg Roedel <joerg.roedel@....com>
+ *         Leo Duran <leo.duran@....com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ */
+
+#include <linux/pci.h>
+#include <linux/gfp.h>
+#include <linux/bitops.h>
+#include <linux/scatterlist.h>
+#include <linux/iommu-helper.h>
+#include <asm/proto.h>
+#include <asm/gart.h>
+#include <asm/amd_iommu_types.h>
+
+#define CMD_SET_TYPE(cmd, t) ((cmd)->data[1] |= ((t) << 28))
+
+#define to_pages(addr, size) \
+	 (round_up(((addr) & ~PAGE_MASK) + (size), PAGE_SIZE) >> PAGE_SHIFT)
+
+static DEFINE_RWLOCK(amd_iommu_devtable_lock);
+
+struct command {
+	u32 data[4];
+};
+
+
-- 
1.5.3.7


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