Linux kernel mirror (for testing)
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linux
1/*
2 * Port on Texas Instruments TMS320C6x architecture
3 *
4 * Copyright (C) 2005, 2006, 2009, 2010, 2012 Texas Instruments Incorporated
5 * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com)
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11#ifndef _ASM_C6X_CACHE_H
12#define _ASM_C6X_CACHE_H
13
14#include <linux/irqflags.h>
15
16/*
17 * Cache line size
18 */
19#define L1D_CACHE_SHIFT 6
20#define L1D_CACHE_BYTES (1 << L1D_CACHE_SHIFT)
21
22#define L1P_CACHE_SHIFT 5
23#define L1P_CACHE_BYTES (1 << L1P_CACHE_SHIFT)
24
25#define L2_CACHE_SHIFT 7
26#define L2_CACHE_BYTES (1 << L2_CACHE_SHIFT)
27
28/*
29 * L2 used as cache
30 */
31#define L2MODE_SIZE L2MODE_256K_CACHE
32
33/*
34 * For practical reasons the L1_CACHE_BYTES defines should not be smaller than
35 * the L2 line size
36 */
37#define L1_CACHE_SHIFT L2_CACHE_SHIFT
38#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
39
40#define L2_CACHE_ALIGN_LOW(x) \
41 (((x) & ~(L2_CACHE_BYTES - 1)))
42#define L2_CACHE_ALIGN_UP(x) \
43 (((x) + (L2_CACHE_BYTES - 1)) & ~(L2_CACHE_BYTES - 1))
44#define L2_CACHE_ALIGN_CNT(x) \
45 (((x) + (sizeof(int) - 1)) & ~(sizeof(int) - 1))
46
47#define ARCH_DMA_MINALIGN L1_CACHE_BYTES
48#define ARCH_SLAB_MINALIGN L1_CACHE_BYTES
49
50/*
51 * This is the granularity of hardware cacheability control.
52 */
53#define CACHEABILITY_ALIGN 0x01000000
54
55/*
56 * Align a physical address to MAR regions
57 */
58#define CACHE_REGION_START(v) \
59 (((u32) (v)) & ~(CACHEABILITY_ALIGN - 1))
60#define CACHE_REGION_END(v) \
61 (((u32) (v) + (CACHEABILITY_ALIGN - 1)) & ~(CACHEABILITY_ALIGN - 1))
62
63extern void __init c6x_cache_init(void);
64
65extern void enable_caching(unsigned long start, unsigned long end);
66extern void disable_caching(unsigned long start, unsigned long end);
67
68extern void L1_cache_off(void);
69extern void L1_cache_on(void);
70
71extern void L1P_cache_global_invalidate(void);
72extern void L1D_cache_global_invalidate(void);
73extern void L1D_cache_global_writeback(void);
74extern void L1D_cache_global_writeback_invalidate(void);
75extern void L2_cache_set_mode(unsigned int mode);
76extern void L2_cache_global_writeback_invalidate(void);
77extern void L2_cache_global_writeback(void);
78
79extern void L1P_cache_block_invalidate(unsigned int start, unsigned int end);
80extern void L1D_cache_block_invalidate(unsigned int start, unsigned int end);
81extern void L1D_cache_block_writeback_invalidate(unsigned int start,
82 unsigned int end);
83extern void L1D_cache_block_writeback(unsigned int start, unsigned int end);
84extern void L2_cache_block_invalidate(unsigned int start, unsigned int end);
85extern void L2_cache_block_writeback(unsigned int start, unsigned int end);
86extern void L2_cache_block_writeback_invalidate(unsigned int start,
87 unsigned int end);
88extern void L2_cache_block_invalidate_nowait(unsigned int start,
89 unsigned int end);
90extern void L2_cache_block_writeback_nowait(unsigned int start,
91 unsigned int end);
92
93extern void L2_cache_block_writeback_invalidate_nowait(unsigned int start,
94 unsigned int end);
95
96#endif /* _ASM_C6X_CACHE_H */