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authorChris Leech <christopher.leech@intel.com>2006-05-23 17:35:34 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2006-06-17 21:18:46 -0700
commit0bbd5f4e97ff9c057b385a1886b4aed1fb0300f1 (patch)
tree0c3d8528c31e8291fb78c2e7a287910987ed2888 /drivers/dma/ioatdma_io.h
parentc13c8260da3155f2cefb63b0d1b7dcdcb405c644 (diff)
downloadop-kernel-dev-0bbd5f4e97ff9c057b385a1886b4aed1fb0300f1.zip
op-kernel-dev-0bbd5f4e97ff9c057b385a1886b4aed1fb0300f1.tar.gz
[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>
Diffstat (limited to 'drivers/dma/ioatdma_io.h')
-rw-r--r--drivers/dma/ioatdma_io.h118
1 files changed, 118 insertions, 0 deletions
diff --git a/drivers/dma/ioatdma_io.h b/drivers/dma/ioatdma_io.h
new file mode 100644
index 0000000..c0b4bf6
--- /dev/null
+++ b/drivers/dma/ioatdma_io.h
@@ -0,0 +1,118 @@
+/*
+ * 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 IOATDMA_IO_H
+#define IOATDMA_IO_H
+
+#include <asm/io.h>
+
+/*
+ * device and per-channel MMIO register read and write functions
+ * this is a lot of anoying inline functions, but it's typesafe
+ */
+
+static inline u8 ioatdma_read8(struct ioat_device *device,
+ unsigned int offset)
+{
+ return readb(device->reg_base + offset);
+}
+
+static inline u16 ioatdma_read16(struct ioat_device *device,
+ unsigned int offset)
+{
+ return readw(device->reg_base + offset);
+}
+
+static inline u32 ioatdma_read32(struct ioat_device *device,
+ unsigned int offset)
+{
+ return readl(device->reg_base + offset);
+}
+
+static inline void ioatdma_write8(struct ioat_device *device,
+ unsigned int offset, u8 value)
+{
+ writeb(value, device->reg_base + offset);
+}
+
+static inline void ioatdma_write16(struct ioat_device *device,
+ unsigned int offset, u16 value)
+{
+ writew(value, device->reg_base + offset);
+}
+
+static inline void ioatdma_write32(struct ioat_device *device,
+ unsigned int offset, u32 value)
+{
+ writel(value, device->reg_base + offset);
+}
+
+static inline u8 ioatdma_chan_read8(struct ioat_dma_chan *chan,
+ unsigned int offset)
+{
+ return readb(chan->reg_base + offset);
+}
+
+static inline u16 ioatdma_chan_read16(struct ioat_dma_chan *chan,
+ unsigned int offset)
+{
+ return readw(chan->reg_base + offset);
+}
+
+static inline u32 ioatdma_chan_read32(struct ioat_dma_chan *chan,
+ unsigned int offset)
+{
+ return readl(chan->reg_base + offset);
+}
+
+static inline void ioatdma_chan_write8(struct ioat_dma_chan *chan,
+ unsigned int offset, u8 value)
+{
+ writeb(value, chan->reg_base + offset);
+}
+
+static inline void ioatdma_chan_write16(struct ioat_dma_chan *chan,
+ unsigned int offset, u16 value)
+{
+ writew(value, chan->reg_base + offset);
+}
+
+static inline void ioatdma_chan_write32(struct ioat_dma_chan *chan,
+ unsigned int offset, u32 value)
+{
+ writel(value, chan->reg_base + offset);
+}
+
+#if (BITS_PER_LONG == 64)
+static inline u64 ioatdma_chan_read64(struct ioat_dma_chan *chan,
+ unsigned int offset)
+{
+ return readq(chan->reg_base + offset);
+}
+
+static inline void ioatdma_chan_write64(struct ioat_dma_chan *chan,
+ unsigned int offset, u64 value)
+{
+ writeq(value, chan->reg_base + offset);
+}
+#endif
+
+#endif /* IOATDMA_IO_H */
+
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