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