[I/OAT]: Driver for the Intel(R) I/OAT DMA engine

Adds a new ioatdma driver

Signed-off-by: Chris Leech <christopher.leech@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 52 insertions, 0 deletions

diff --git a/drivers/dma/ioatdma_hw.h b/drivers/dma/ioatdma_hw.h
new file mode 100644
index 000000000000..4d7a12880be3
--- /dev/null
+++ b/drivers/dma/ioatdma_hw.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright(c) 2004 - 2006 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * 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.
+ *
+ * The full GNU General Public License is included in this distribution in the
+ * file called COPYING.
+ */
+#ifndef _IOAT_HW_H_
+#define _IOAT_HW_H_
+
+/* PCI Configuration Space Values */
+#define IOAT_PCI_VID                    0x8086
+#define IOAT_PCI_DID                    0x1A38
+#define IOAT_PCI_RID                    0x00
+#define IOAT_PCI_SVID                   0x8086
+#define IOAT_PCI_SID                    0x8086
+#define IOAT_VER                        0x12    /* Version 1.2 */
+
+struct ioat_dma_descriptor {
+        uint32_t        size;
+        uint32_t        ctl;
+        uint64_t        src_addr;
+        uint64_t        dst_addr;
+        uint64_t        next;
+        uint64_t        rsv1;
+        uint64_t        rsv2;
+        uint64_t        user1;
+        uint64_t        user2;
+};
+
+#define IOAT_DMA_DESCRIPTOR_CTL_INT_GN  0x00000001
+#define IOAT_DMA_DESCRIPTOR_CTL_SRC_SN  0x00000002
+#define IOAT_DMA_DESCRIPTOR_CTL_DST_SN  0x00000004
+#define IOAT_DMA_DESCRIPTOR_CTL_CP_STS  0x00000008
+#define IOAT_DMA_DESCRIPTOR_CTL_FRAME   0x00000010
+#define IOAT_DMA_DESCRIPTOR_NUL         0x00000020
+#define IOAT_DMA_DESCRIPTOR_OPCODE      0xFF000000
+
+#endif