1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
|
/*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* BSD LICENSE
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _SCI_UTIL_H_
#define _SCI_UTIL_H_
#include "sci_types.h"
/**
* SCIC_SWAP_DWORD() -
*
* Normal byte swap macro
*/
#define SCIC_SWAP_DWORD(x) \
(\
(((x) >> 24) & 0x000000FF) \
| (((x) >> 8) & 0x0000FF00) \
| (((x) << 8) & 0x00FF0000) \
| (((x) << 24) & 0xFF000000) \
)
#define SCIC_BUILD_DWORD(char_buffer) \
(\
((char_buffer)[0] << 24) \
| ((char_buffer)[1] << 16) \
| ((char_buffer)[2] << 8) \
| ((char_buffer)[3]) \
)
#define SCI_FIELD_OFFSET(type, field) ((unsigned long)&(((type *)0)->field))
/**
* sci_physical_address_add() -
*
* This macro simply performs addition on an dma_addr_t type. The
* lower u32 value is "clipped" or "wrapped" back through 0. When this occurs
* the upper 32-bits are incremented by 1.
*/
#define sci_physical_address_add(physical_address, value) \
{ \
u32 lower = lower_32_bits((physical_address)); \
u32 upper = upper_32_bits((physical_address)); \
\
if (lower + (value) < lower) \
upper += 1; \
\
lower += (value); \
sci_cb_make_physical_address(physical_address, upper, lower); \
}
/**
* sci_physical_address_subtract() -
*
* This macro simply performs subtraction on an dma_addr_t type. The
* lower u32 value is "clipped" or "wrapped" back through 0. When this occurs
* the upper 32-bits are decremented by 1.
*/
#define sci_physical_address_subtract(physical_address, value) \
{ \
u32 lower = lower_32_bits((physical_address)); \
u32 upper = upper_32_bits((physical_address)); \
\
if (lower - (value) > lower) \
upper -= 1; \
\
lower -= (value); \
sci_cb_make_physical_address(physical_address, upper, lower); \
}
/**
* scic_word_copy_with_swap() - Copy the data from source to destination and
* swap the bytes during the copy.
* @destination: This parameter specifies the destination address to which the
* data is to be copied.
* @source: This parameter specifies the source address from which data is to
* be copied.
* @word_count: This parameter specifies the number of 32-bit words to copy and
* byte swap.
*
*/
void scic_word_copy_with_swap(
u32 *destination,
u32 *source,
u32 word_count);
#endif /* _SCI_UTIL_H_ */
|
