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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/***************************************************************************\
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(par, tag, size) { \
77 if((par)->dmaFree <= (size)) \
78 NVDmaWait(par, 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
Antonino A. Daplas7c1cd6f2005-09-09 13:10:01 -070098#ifdef __LITTLE_ENDIAN
Akinobu Mita1c667682006-12-08 02:36:26 -080099
100#include <linux/bitrev.h>
101
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102#define reverse_order(l) \
103do { \
104 u8 *a = (u8 *)(l); \
Akinobu Mita1c667682006-12-08 02:36:26 -0800105 a[0] = bitrev8(a[0]); \
106 a[1] = bitrev8(a[1]); \
107 a[2] = bitrev8(a[2]); \
108 a[3] = bitrev8(a[3]); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109} while(0)
Antonino A. Daplas7c1cd6f2005-09-09 13:10:01 -0700110#else
Antonino A. Daplas2fe01752005-11-07 01:00:46 -0800111#define reverse_order(l) do { } while(0)
Antonino A. Daplas7c1cd6f2005-09-09 13:10:01 -0700112#endif /* __LITTLE_ENDIAN */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113
114#endif /* __NV_LOCAL_H__ */