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authorJoerg Roedel <joerg.roedel@amd.com>2008-06-26 21:27:53 +0200
committerIngo Molnar <mingo@elte.hu>2008-06-27 10:12:14 +0200
commitb6c02715cff8c96174022166bfa3e1a25436fb34 (patch)
tree5e378fa61a68ec70df9b53b930bae38185e0f473 /arch/x86/kernel/amd_iommu.c
parent918ad6c54d107ccfc4ccaa3a54b97437467fb58a (diff)
downloadop-kernel-dev-b6c02715cff8c96174022166bfa3e1a25436fb34.zip
op-kernel-dev-b6c02715cff8c96174022166bfa3e1a25436fb34.tar.gz
x86, 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@amd.com> Cc: iommu@lists.linux-foundation.org Cc: bhavna.sarathy@amd.com Cc: Sebastian.Biemueller@amd.com Cc: robert.richter@amd.com Cc: joro@8bytes.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/amd_iommu.c')
-rw-r--r--arch/x86/kernel/amd_iommu.c40
1 files changed, 40 insertions, 0 deletions
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@amd.com>
+ * Leo Duran <leo.duran@amd.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];
+};
+
+
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