tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
3 * reserved.
4 *
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the NetLogic
9 * license below:
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 *
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in
19 * the documentation and/or other materials provided with the
20 * distribution.
21 *
22 * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
24 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
29 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
30 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
31 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
32 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 */
34
35#ifndef _ASM_NLM_MIPS_EXTS_H
36#define _ASM_NLM_MIPS_EXTS_H
37
38/*
39 * XLR and XLP interrupt request and interrupt mask registers
40 */
41#define read_c0_eirr() __read_64bit_c0_register($9, 6)
42#define read_c0_eimr() __read_64bit_c0_register($9, 7)
43#define write_c0_eirr(val) __write_64bit_c0_register($9, 6, val)
44
45/*
46 * Writing EIMR in 32 bit is a special case, the lower 8 bit of the
47 * EIMR is shadowed in the status register, so we cannot save and
48 * restore status register for split read.
49 */
50#define write_c0_eimr(val) \
51do { \
52 if (sizeof(unsigned long) == 4) { \
53 unsigned long __flags; \
54 \
55 local_irq_save(__flags); \
56 __asm__ __volatile__( \
57 ".set\tmips64\n\t" \
58 "dsll\t%L0, %L0, 32\n\t" \
59 "dsrl\t%L0, %L0, 32\n\t" \
60 "dsll\t%M0, %M0, 32\n\t" \
61 "or\t%L0, %L0, %M0\n\t" \
62 "dmtc0\t%L0, $9, 7\n\t" \
63 ".set\tmips0" \
64 : : "r" (val)); \
65 __flags = (__flags & 0xffff00ff) | (((val) & 0xff) << 8);\
66 local_irq_restore(__flags); \
67 } else \
68 __write_64bit_c0_register($9, 7, (val)); \
69} while (0)
70
71static inline int hard_smp_processor_id(void)
72{
73 return __read_32bit_c0_register($15, 1) & 0x3ff;
74}
75
76#endif /*_ASM_NLM_MIPS_EXTS_H */