drivers/video/fbdev/nvidia/nv_local.h

   1 /***************************************************************************\
   2 |*                                                                           *|
   3 |*       Copyright 1993-2003 NVIDIA, Corporation.  All rights reserved.      *|
   4 |*                                                                           *|
   5 |*     NOTICE TO USER:   The source code  is copyrighted under  U.S. and     *|
   6 |*     international laws.  Users and possessors of this source code are     *|
   7 |*     hereby granted a nonexclusive,  royalty-free copyright license to     *|
   8 |*     use this code in individual and commercial software.                  *|
   9 |*                                                                           *|
  10 |*     Any use of this source code must include,  in the user documenta-     *|
  11 |*     tion and  internal comments to the code,  notices to the end user     *|
  12 |*     as follows:                                                           *|
  13 |*                                                                           *|
  14 |*       Copyright 1993-1999 NVIDIA, Corporation.  All rights reserved.      *|
  15 |*                                                                           *|
  16 |*     NVIDIA, CORPORATION MAKES NO REPRESENTATION ABOUT THE SUITABILITY     *|
  17 |*     OF  THIS SOURCE  CODE  FOR ANY PURPOSE.  IT IS  PROVIDED  "AS IS"     *|
  18 |*     WITHOUT EXPRESS OR IMPLIED WARRANTY OF ANY KIND.  NVIDIA, CORPOR-     *|
  19 |*     ATION DISCLAIMS ALL WARRANTIES  WITH REGARD  TO THIS SOURCE CODE,     *|
  20 |*     INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGE-     *|
  21 |*     MENT,  AND FITNESS  FOR A PARTICULAR PURPOSE.   IN NO EVENT SHALL     *|
  22 |*     NVIDIA, CORPORATION  BE LIABLE FOR ANY SPECIAL,  INDIRECT,  INCI-     *|
  23 |*     DENTAL, OR CONSEQUENTIAL DAMAGES,  OR ANY DAMAGES  WHATSOEVER RE-     *|
  24 |*     SULTING FROM LOSS OF USE,  DATA OR PROFITS,  WHETHER IN AN ACTION     *|
  25 |*     OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,  ARISING OUT OF     *|
  26 |*     OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOURCE CODE.     *|
  27 |*                                                                           *|
  28 |*     U.S. Government  End  Users.   This source code  is a "commercial     *|
  29 |*     item,"  as that  term is  defined at  48 C.F.R. 2.101 (OCT 1995),     *|
  30 |*     consisting  of "commercial  computer  software"  and  "commercial     *|
  31 |*     computer  software  documentation,"  as such  terms  are  used in     *|
  32 |*     48 C.F.R. 12.212 (SEPT 1995)  and is provided to the U.S. Govern-     *|
  33 |*     ment only as  a commercial end item.   Consistent with  48 C.F.R.     *|
  34 |*     12.212 and  48 C.F.R. 227.7202-1 through  227.7202-4 (JUNE 1995),     *|
  35 |*     all U.S. Government End Users  acquire the source code  with only     *|
  36 |*     those rights set forth herein.                                        *|
  37 |*                                                                           *|
  38  \***************************************************************************/
  39
  40 /*
  41  * GPL Licensing Note - According to Mark Vojkovich, author of the Xorg/
  42  * XFree86 'nv' driver, this source code is provided under MIT-style licensing
  43  * where the source code is provided "as is" without warranty of any kind.
  44  * The only usage restriction is for the copyright notices to be retained
  45  * whenever code is used.
  46  *
  47  * Antonino Daplas <adaplas@pol.net> 2005-03-11
  48  */
  49
  50 #ifndef __NV_LOCAL_H__
  51 #define __NV_LOCAL_H__
  52
  53 /*
  54  * This file includes any environment or machine specific values to access the
  55  * HW.  Put all affected includes, typdefs, etc. here so the riva_hw.* files
  56  * can stay generic in nature.
  57  */
  58
  59 /*
  60  * HW access macros.  These assume memory-mapped I/O, and not normal I/O space.
  61  */
  62 #define NV_WR08(p,i,d)  (__raw_writeb((d), (void __iomem *)(p) + (i)))
  63 #define NV_RD08(p,i)    (__raw_readb((void __iomem *)(p) + (i)))
  64 #define NV_WR16(p,i,d)  (__raw_writew((d), (void __iomem *)(p) + (i)))
  65 #define NV_RD16(p,i)    (__raw_readw((void __iomem *)(p) + (i)))
  66 #define NV_WR32(p,i,d)  (__raw_writel((d), (void __iomem *)(p) + (i)))
  67 #define NV_RD32(p,i)    (__raw_readl((void __iomem *)(p) + (i)))
  68
  69 /* VGA I/O is now always done through MMIO */
  70 #define VGA_WR08(p,i,d) (writeb((d), (void __iomem *)(p) + (i)))
  71 #define VGA_RD08(p,i)   (readb((void __iomem *)(p) + (i)))
  72
  73 #define NVDmaNext(par, data) \
  74      NV_WR32(&(par)->dmaBase[(par)->dmaCurrent++], 0, (data))
  75
  76 #define NVDmaStart(info, par, tag, size) {    \
  77      if((par)->dmaFree <= (size))             \
  78         NVDmaWait(info, size);                \
  79      NVDmaNext(par, ((size) << 18) | (tag));  \
  80      (par)->dmaFree -= ((size) + 1);          \
  81 }
  82
  83 #if defined(__i386__)
  84 #define _NV_FENCE() outb(0, 0x3D0);
  85 #else
  86 #define _NV_FENCE() mb();
  87 #endif
  88
  89 #define WRITE_PUT(par, data) {                   \
  90   _NV_FENCE()                                    \
  91   NV_RD08((par)->FbStart, 0);                    \
  92   NV_WR32(&(par)->FIFO[0x0010], 0, (data) << 2); \
  93   mb();                                          \
  94 }
  95
  96 #define READ_GET(par) (NV_RD32(&(par)->FIFO[0x0011], 0) >> 2)
  97
  98 #ifdef __LITTLE_ENDIAN
  99
 100 #include <linux/bitrev.h>
 101
 102 #define reverse_order(l)        \
 103 do {                            \
 104         u8 *a = (u8 *)(l);      \
 105         a[0] = bitrev8(a[0]);   \
 106         a[1] = bitrev8(a[1]);   \
 107         a[2] = bitrev8(a[2]);   \
 108         a[3] = bitrev8(a[3]);   \
 109 } while(0)
 110 #else
 111 #define reverse_order(l) do { } while(0)
 112 #endif                          /* __LITTLE_ENDIAN */
 113
 114 #endif                          /* __NV_LOCAL_H__ */