Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
1/*
2 * arch/xtensa/include/asm/xchal_vaddr_remap.h
3 *
4 * Xtensa macros for MMU V3 Support. Deals with re-mapping the Virtual
5 * Memory Addresses from "Virtual == Physical" to their prevvious V2 MMU
6 * mappings (KSEG at 0xD0000000 and KIO at 0XF0000000).
7 *
8 * This file is subject to the terms and conditions of the GNU General Public
9 * License. See the file "COPYING" in the main directory of this archive
10 * for more details.
11 *
12 * Copyright (C) 2008 - 2012 Tensilica Inc.
13 *
14 * Pete Delaney <piet@tensilica.com>
15 * Marc Gauthier <marc@tensilica.com
16 */
17
18#ifndef _XTENSA_VECTORS_H
19#define _XTENSA_VECTORS_H
20
21#include <asm/core.h>
22#include <asm/kmem_layout.h>
23
24#if defined(CONFIG_MMU) && XCHAL_HAVE_PTP_MMU && XCHAL_HAVE_SPANNING_WAY
25#ifdef CONFIG_KERNEL_VIRTUAL_ADDRESS
26#define KERNELOFFSET CONFIG_KERNEL_VIRTUAL_ADDRESS
27#else
28#define KERNELOFFSET (CONFIG_KERNEL_LOAD_ADDRESS + \
29 XCHAL_KSEG_CACHED_VADDR - \
30 XCHAL_KSEG_PADDR)
31#endif
32#else
33#define KERNELOFFSET CONFIG_KERNEL_LOAD_ADDRESS
34#endif
35
36#define RESET_VECTOR1_VADDR (XCHAL_RESET_VECTOR1_VADDR)
37#ifdef CONFIG_VECTORS_ADDR
38#define VECBASE_VADDR (CONFIG_VECTORS_ADDR)
39#else
40#define VECBASE_VADDR _vecbase
41#endif
42
43#if XCHAL_HAVE_VECBASE
44
45#define VECTOR_VADDR(offset) (VECBASE_VADDR + offset)
46
47#define USER_VECTOR_VADDR VECTOR_VADDR(XCHAL_USER_VECOFS)
48#define KERNEL_VECTOR_VADDR VECTOR_VADDR(XCHAL_KERNEL_VECOFS)
49#define DOUBLEEXC_VECTOR_VADDR VECTOR_VADDR(XCHAL_DOUBLEEXC_VECOFS)
50#define WINDOW_VECTORS_VADDR VECTOR_VADDR(XCHAL_WINDOW_OF4_VECOFS)
51#define INTLEVEL2_VECTOR_VADDR VECTOR_VADDR(XCHAL_INTLEVEL2_VECOFS)
52#define INTLEVEL3_VECTOR_VADDR VECTOR_VADDR(XCHAL_INTLEVEL3_VECOFS)
53#define INTLEVEL4_VECTOR_VADDR VECTOR_VADDR(XCHAL_INTLEVEL4_VECOFS)
54#define INTLEVEL5_VECTOR_VADDR VECTOR_VADDR(XCHAL_INTLEVEL5_VECOFS)
55#define INTLEVEL6_VECTOR_VADDR VECTOR_VADDR(XCHAL_INTLEVEL6_VECOFS)
56#define INTLEVEL7_VECTOR_VADDR VECTOR_VADDR(XCHAL_INTLEVEL7_VECOFS)
57#define DEBUG_VECTOR_VADDR VECTOR_VADDR(XCHAL_DEBUG_VECOFS)
58
59/*
60 * These XCHAL_* #defines from varian/core.h
61 * are not valid to use with V3 MMU. Non-XCHAL
62 * constants are defined above and should be used.
63 */
64#undef XCHAL_VECBASE_RESET_VADDR
65#undef XCHAL_USER_VECTOR_VADDR
66#undef XCHAL_KERNEL_VECTOR_VADDR
67#undef XCHAL_DOUBLEEXC_VECTOR_VADDR
68#undef XCHAL_WINDOW_VECTORS_VADDR
69#undef XCHAL_INTLEVEL2_VECTOR_VADDR
70#undef XCHAL_INTLEVEL3_VECTOR_VADDR
71#undef XCHAL_INTLEVEL4_VECTOR_VADDR
72#undef XCHAL_INTLEVEL5_VECTOR_VADDR
73#undef XCHAL_INTLEVEL6_VECTOR_VADDR
74#undef XCHAL_INTLEVEL7_VECTOR_VADDR
75#undef XCHAL_DEBUG_VECTOR_VADDR
76
77#else
78
79#define USER_VECTOR_VADDR XCHAL_USER_VECTOR_VADDR
80#define KERNEL_VECTOR_VADDR XCHAL_KERNEL_VECTOR_VADDR
81#define DOUBLEEXC_VECTOR_VADDR XCHAL_DOUBLEEXC_VECTOR_VADDR
82#define WINDOW_VECTORS_VADDR XCHAL_WINDOW_VECTORS_VADDR
83#define INTLEVEL2_VECTOR_VADDR XCHAL_INTLEVEL2_VECTOR_VADDR
84#define INTLEVEL3_VECTOR_VADDR XCHAL_INTLEVEL3_VECTOR_VADDR
85#define INTLEVEL4_VECTOR_VADDR XCHAL_INTLEVEL4_VECTOR_VADDR
86#define INTLEVEL5_VECTOR_VADDR XCHAL_INTLEVEL5_VECTOR_VADDR
87#define INTLEVEL6_VECTOR_VADDR XCHAL_INTLEVEL6_VECTOR_VADDR
88#define INTLEVEL7_VECTOR_VADDR XCHAL_INTLEVEL6_VECTOR_VADDR
89#define DEBUG_VECTOR_VADDR XCHAL_DEBUG_VECTOR_VADDR
90
91#endif
92
93#endif /* _XTENSA_VECTORS_H */