fbdev/nvidia/nv_local.h

0001 /***************************************************************************\
0002 |*                                                                           *|
0003 |*       Copyright 1993-2003 NVIDIA, Corporation.  All rights reserved.      *|
0004 |*                                                                           *|
0005 |*     NOTICE TO USER:   The source code  is copyrighted under  U.S. and     *|
0006 |*     international laws.  Users and possessors of this source code are     *|
0007 |*     hereby granted a nonexclusive,  royalty-free copyright license to     *|
0008 |*     use this code in individual and commercial software.                  *|
0009 |*                                                                           *|
0010 |*     Any use of this source code must include,  in the user documenta-     *|
0011 |*     tion and  internal comments to the code,  notices to the end user     *|
0012 |*     as follows:                                                           *|
0013 |*                                                                           *|
0014 |*       Copyright 1993-1999 NVIDIA, Corporation.  All rights reserved.      *|
0015 |*                                                                           *|
0016 |*     NVIDIA, CORPORATION MAKES NO REPRESENTATION ABOUT THE SUITABILITY     *|
0017 |*     OF  THIS SOURCE  CODE  FOR ANY PURPOSE.  IT IS  PROVIDED  "AS IS"     *|
0018 |*     WITHOUT EXPRESS OR IMPLIED WARRANTY OF ANY KIND.  NVIDIA, CORPOR-     *|
0019 |*     ATION DISCLAIMS ALL WARRANTIES  WITH REGARD  TO THIS SOURCE CODE,     *|
0020 |*     INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGE-     *|
0021 |*     MENT,  AND FITNESS  FOR A PARTICULAR PURPOSE.   IN NO EVENT SHALL     *|
0022 |*     NVIDIA, CORPORATION  BE LIABLE FOR ANY SPECIAL,  INDIRECT,  INCI-     *|
0023 |*     DENTAL, OR CONSEQUENTIAL DAMAGES,  OR ANY DAMAGES  WHATSOEVER RE-     *|
0024 |*     SULTING FROM LOSS OF USE,  DATA OR PROFITS,  WHETHER IN AN ACTION     *|
0025 |*     OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,  ARISING OUT OF     *|
0026 |*     OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOURCE CODE.     *|
0027 |*                                                                           *|
0028 |*     U.S. Government  End  Users.   This source code  is a "commercial     *|
0029 |*     item,"  as that  term is  defined at  48 C.F.R. 2.101 (OCT 1995),     *|
0030 |*     consisting  of "commercial  computer  software"  and  "commercial     *|
0031 |*     computer  software  documentation,"  as such  terms  are  used in     *|
0032 |*     48 C.F.R. 12.212 (SEPT 1995)  and is provided to the U.S. Govern-     *|
0033 |*     ment only as  a commercial end item.   Consistent with  48 C.F.R.     *|
0034 |*     12.212 and  48 C.F.R. 227.7202-1 through  227.7202-4 (JUNE 1995),     *|
0035 |*     all U.S. Government End Users  acquire the source code  with only     *|
0036 |*     those rights set forth herein.                                        *|
0037 |*                                                                           *|
0038  \***************************************************************************/
0039
0040 /*
0041  * GPL Licensing Note - According to Mark Vojkovich, author of the Xorg/
0042  * XFree86 'nv' driver, this source code is provided under MIT-style licensing
0043  * where the source code is provided "as is" without warranty of any kind.
0044  * The only usage restriction is for the copyright notices to be retained
0045  * whenever code is used.
0046  *
0047  * Antonino Daplas <adaplas@pol.net> 2005-03-11
0048  */
0049
0050 #ifndef __NV_LOCAL_H__
0051 #define __NV_LOCAL_H__
0052
0053 /*
0054  * This file includes any environment or machine specific values to access the
0055  * HW.  Put all affected includes, typdefs, etc. here so the riva_hw.* files
0056  * can stay generic in nature.
0057  */
0058
0059 /*
0060  * HW access macros.  These assume memory-mapped I/O, and not normal I/O space.
0061  */
0062 #define NV_WR08(p,i,d)  (__raw_writeb((d), (void __iomem *)(p) + (i)))
0063 #define NV_RD08(p,i)    (__raw_readb((void __iomem *)(p) + (i)))
0064 #define NV_WR16(p,i,d)  (__raw_writew((d), (void __iomem *)(p) + (i)))
0065 #define NV_RD16(p,i)    (__raw_readw((void __iomem *)(p) + (i)))
0066 #define NV_WR32(p,i,d)  (__raw_writel((d), (void __iomem *)(p) + (i)))
0067 #define NV_RD32(p,i)    (__raw_readl((void __iomem *)(p) + (i)))
0068
0069 /* VGA I/O is now always done through MMIO */
0070 #define VGA_WR08(p,i,d) (writeb((d), (void __iomem *)(p) + (i)))
0071 #define VGA_RD08(p,i)   (readb((void __iomem *)(p) + (i)))
0072
0073 #define NVDmaNext(par, data) \
0074      NV_WR32(&(par)->dmaBase[(par)->dmaCurrent++], 0, (data))
0075
0076 #define NVDmaStart(info, par, tag, size) {    \
0077      if((par)->dmaFree <= (size))             \
0078         NVDmaWait(info, size);                \
0079      NVDmaNext(par, ((size) << 18) | (tag));  \
0080      (par)->dmaFree -= ((size) + 1);          \
0081 }
0082
0083 #if defined(__i386__)
0084 #define _NV_FENCE() outb(0, 0x3D0);
0085 #else
0086 #define _NV_FENCE() mb();
0087 #endif
0088
0089 #define WRITE_PUT(par, data) {                   \
0090   _NV_FENCE()                                    \
0091   NV_RD08((par)->FbStart, 0);                    \
0092   NV_WR32(&(par)->FIFO[0x0010], 0, (data) << 2); \
0093   mb();                                          \
0094 }
0095
0096 #define READ_GET(par) (NV_RD32(&(par)->FIFO[0x0011], 0) >> 2)
0097
0098 #ifdef __LITTLE_ENDIAN
0099
0100 #include <linux/bitrev.h>
0101
0102 #define reverse_order(l)        \
0103 do {                            \
0104     u8 *a = (u8 *)(l);      \
0105     a[0] = bitrev8(a[0]);   \
0106     a[1] = bitrev8(a[1]);   \
0107     a[2] = bitrev8(a[2]);   \
0108     a[3] = bitrev8(a[3]);   \
0109 } while(0)
0110 #else
0111 #define reverse_order(l) do { } while(0)
0112 #endif                          /* __LITTLE_ENDIAN */
0113
0114 #endif              /* __NV_LOCAL_H__ */