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authorChris Leech <christopher.leech@intel.com>2006-05-23 20:35:34 -0400
committerDavid S. Miller <davem@sunset.davemloft.net>2006-06-18 00:18:46 -0400
commit0bbd5f4e97ff9c057b385a1886b4aed1fb0300f1 (patch)
tree0c3d8528c31e8291fb78c2e7a287910987ed2888 /drivers/dma/ioatdma_io.h
parentc13c8260da3155f2cefb63b0d1b7dcdcb405c644 (diff)
[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 000000000000..c0b4bf66c920
--- /dev/null
+++ b/drivers/dma/ioatdma_io.h
@@ -0,0 +1,118 @@
1/*
2 * Copyright(c) 2004 - 2006 Intel Corporation. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License as published by the Free
6 * Software Foundation; either version 2 of the License, or (at your option)
7 * any later version.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc., 59
16 * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 *
18 * The full GNU General Public License is included in this distribution in the
19 * file called COPYING.
20 */
21#ifndef IOATDMA_IO_H
22#define IOATDMA_IO_H
23
24#include <asm/io.h>
25
26/*
27 * device and per-channel MMIO register read and write functions
28 * this is a lot of anoying inline functions, but it's typesafe
29 */
30
31static inline u8 ioatdma_read8(struct ioat_device *device,
32 unsigned int offset)
33{
34 return readb(device->reg_base + offset);
35}
36
37static inline u16 ioatdma_read16(struct ioat_device *device,
38 unsigned int offset)
39{
40 return readw(device->reg_base + offset);
41}
42
43static inline u32 ioatdma_read32(struct ioat_device *device,
44 unsigned int offset)
45{
46 return readl(device->reg_base + offset);
47}
48
49static inline void ioatdma_write8(struct ioat_device *device,
50 unsigned int offset, u8 value)
51{
52 writeb(value, device->reg_base + offset);
53}
54
55static inline void ioatdma_write16(struct ioat_device *device,
56 unsigned int offset, u16 value)
57{
58 writew(value, device->reg_base + offset);
59}
60
61static inline void ioatdma_write32(struct ioat_device *device,
62 unsigned int offset, u32 value)
63{
64 writel(value, device->reg_base + offset);
65}
66
67static inline u8 ioatdma_chan_read8(struct ioat_dma_chan *chan,
68 unsigned int offset)
69{
70 return readb(chan->reg_base + offset);
71}
72
73static inline u16 ioatdma_chan_read16(struct ioat_dma_chan *chan,
74 unsigned int offset)
75{
76 return readw(chan->reg_base + offset);
77}
78
79static inline u32 ioatdma_chan_read32(struct ioat_dma_chan *chan,
80 unsigned int offset)
81{
82 return readl(chan->reg_base + offset);
83}
84
85static inline void ioatdma_chan_write8(struct ioat_dma_chan *chan,
86 unsigned int offset, u8 value)
87{
88 writeb(value, chan->reg_base + offset);
89}
90
91static inline void ioatdma_chan_write16(struct ioat_dma_chan *chan,
92 unsigned int offset, u16 value)
93{
94 writew(value, chan->reg_base + offset);
95}
96
97static inline void ioatdma_chan_write32(struct ioat_dma_chan *chan,
98 unsigned int offset, u32 value)
99{
100 writel(value, chan->reg_base + offset);
101}
102
103#if (BITS_PER_LONG == 64)
104static inline u64 ioatdma_chan_read64(struct ioat_dma_chan *chan,
105 unsigned int offset)
106{
107 return readq(chan->reg_base + offset);
108}
109
110static inline void ioatdma_chan_write64(struct ioat_dma_chan *chan,
111 unsigned int offset, u64 value)
112{
113 writeq(value, chan->reg_base + offset);
114}
115#endif
116
117#endif /* IOATDMA_IO_H */
118