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__ */