I/OAT: Add support for version 2 of ioatdma device
Add support for version 2 of the ioatdma device. This device handles
the descriptor chain and DCA services slightly differently:
- Instead of moving the dma descriptors between a busy and an idle chain,
this new version uses a single circular chain so that we don't have
rewrite the next_descriptor pointers as we add new requests, and the
device doesn't need to re-read the last descriptor.
- The new device has the DCA tags defined internally instead of needing
them defined statically.
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Cc: "Williams, Dan J" <dan.j.williams@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/dma/ioatdma_hw.h b/drivers/dma/ioatdma_hw.h
index 9e7434e..dd470fa 100644
--- a/drivers/dma/ioatdma_hw.h
+++ b/drivers/dma/ioatdma_hw.h
@@ -1,5 +1,5 @@
/*
- * Copyright(c) 2004 - 2006 Intel Corporation. All rights reserved.
+ * Copyright(c) 2004 - 2007 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
@@ -22,12 +22,19 @@
#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_1_2 0x12 /* Version 1.2 */
+#define IOAT_PCI_VID 0x8086
+
+/* CB device ID's */
+#define IOAT_PCI_DID_5000 0x1A38
+#define IOAT_PCI_DID_CNB 0x360B
+#define IOAT_PCI_DID_SCNB 0x65FF
+#define IOAT_PCI_DID_SNB 0x402F
+
+#define IOAT_PCI_RID 0x00
+#define IOAT_PCI_SVID 0x8086
+#define IOAT_PCI_SID 0x8086
+#define IOAT_VER_1_2 0x12 /* Version 1.2 */
+#define IOAT_VER_2_0 0x20 /* Version 2.0 */
struct ioat_dma_descriptor {
uint32_t size;
@@ -47,6 +54,16 @@
#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
+#define IOAT_DMA_DESCRIPTOR_CTL_SP_BRK 0x00000040
+#define IOAT_DMA_DESCRIPTOR_CTL_DP_BRK 0x00000080
+#define IOAT_DMA_DESCRIPTOR_CTL_BNDL 0x00000100
+#define IOAT_DMA_DESCRIPTOR_CTL_DCA 0x00000200
+#define IOAT_DMA_DESCRIPTOR_CTL_BUFHINT 0x00000400
+
+#define IOAT_DMA_DESCRIPTOR_CTL_OPCODE_CONTEXT 0xFF000000
+#define IOAT_DMA_DESCRIPTOR_CTL_OPCODE_DMA 0x00000000
+
+#define IOAT_DMA_DESCRIPTOR_CTL_CONTEXT_DCA 0x00000001
+#define IOAT_DMA_DESCRIPTOR_CTL_OPCODE_MASK 0xFF000000
#endif