drivers/dma/ioatdma_io.h

   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
  31 static inline u8 ioatdma_read8(struct ioat_device *device,
  32                                unsigned int offset)
  33 {
  34         return readb(device->reg_base + offset);
  35 }
  36
  37 static inline u16 ioatdma_read16(struct ioat_device *device,
  38                                  unsigned int offset)
  39 {
  40         return readw(device->reg_base + offset);
  41 }
  42
  43 static inline u32 ioatdma_read32(struct ioat_device *device,
  44                                  unsigned int offset)
  45 {
  46         return readl(device->reg_base + offset);
  47 }
  48
  49 static inline void ioatdma_write8(struct ioat_device *device,
  50                                   unsigned int offset, u8 value)
  51 {
  52         writeb(value, device->reg_base + offset);
  53 }
  54
  55 static inline void ioatdma_write16(struct ioat_device *device,
  56                                    unsigned int offset, u16 value)
  57 {
  58         writew(value, device->reg_base + offset);
  59 }
  60
  61 static inline void ioatdma_write32(struct ioat_device *device,
  62                                    unsigned int offset, u32 value)
  63 {
  64         writel(value, device->reg_base + offset);
  65 }
  66
  67 static inline u8 ioatdma_chan_read8(struct ioat_dma_chan *chan,
  68                                     unsigned int offset)
  69 {
  70         return readb(chan->reg_base + offset);
  71 }
  72
  73 static inline u16 ioatdma_chan_read16(struct ioat_dma_chan *chan,
  74                                       unsigned int offset)
  75 {
  76         return readw(chan->reg_base + offset);
  77 }
  78
  79 static inline u32 ioatdma_chan_read32(struct ioat_dma_chan *chan,
  80                                       unsigned int offset)
  81 {
  82         return readl(chan->reg_base + offset);
  83 }
  84
  85 static 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
  91 static 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
  97 static 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)
 104 static inline u64 ioatdma_chan_read64(struct ioat_dma_chan *chan,
 105                                       unsigned int offset)
 106 {
 107         return readq(chan->reg_base + offset);
 108 }
 109
 110 static 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