1 /*
2  * Cache operations for the cache instruction.
3  *
4  * This file is subject to the terms and conditions of the GNU General Public
5  * License.  See the file "COPYING" in the main directory of this archive
6  * for more details.
7  *
8  * (C) Copyright 1996, 97, 99, 2002, 03 Ralf Baechle
9  * (C) Copyright 1999 Silicon Graphics, Inc.
10  */
11 #ifndef __ASM_CACHEOPS_H
12 #define __ASM_CACHEOPS_H
13 
14 /*
15  * Most cache ops are split into a 2 bit field identifying the cache, and a 3
16  * bit field identifying the cache operation.
17  */
18 #define CacheOp_Cache			0x03
19 #define CacheOp_Op			0x1c
20 
21 #define Cache_I				0x00
22 #define Cache_D				0x01
23 #define Cache_T				0x02
24 #define Cache_V				0x02 /* Loongson-3 */
25 #define Cache_S				0x03
26 
27 #define Index_Writeback_Inv		0x00
28 #define Index_Load_Tag			0x04
29 #define Index_Store_Tag			0x08
30 #define Hit_Invalidate			0x10
31 #define Hit_Writeback_Inv		0x14	/* not with Cache_I though */
32 #define Hit_Writeback			0x18
33 
34 /*
35  * Cache Operations available on all MIPS processors with R4000-style caches
36  */
37 #define Index_Invalidate_I		(Cache_I | Index_Writeback_Inv)
38 #define Index_Writeback_Inv_D		(Cache_D | Index_Writeback_Inv)
39 #define Index_Load_Tag_I		(Cache_I | Index_Load_Tag)
40 #define Index_Load_Tag_D		(Cache_D | Index_Load_Tag)
41 #define Index_Store_Tag_I		(Cache_I | Index_Store_Tag)
42 #define Index_Store_Tag_D		(Cache_D | Index_Store_Tag)
43 #define Hit_Invalidate_I		(Cache_I | Hit_Invalidate)
44 #define Hit_Invalidate_D		(Cache_D | Hit_Invalidate)
45 #define Hit_Writeback_Inv_D		(Cache_D | Hit_Writeback_Inv)
46 
47 /*
48  * R4000-specific cacheops
49  */
50 #define Create_Dirty_Excl_D		(Cache_D | 0x0c)
51 #define Fill_I				(Cache_I | 0x14)
52 #define Hit_Writeback_I			(Cache_I | Hit_Writeback)
53 #define Hit_Writeback_D			(Cache_D | Hit_Writeback)
54 
55 /*
56  * R4000SC and R4400SC-specific cacheops
57  */
58 #define Cache_SI			0x02
59 #define Cache_SD			0x03
60 
61 #define Index_Invalidate_SI		(Cache_SI | Index_Writeback_Inv)
62 #define Index_Writeback_Inv_SD		(Cache_SD | Index_Writeback_Inv)
63 #define Index_Load_Tag_SI		(Cache_SI | Index_Load_Tag)
64 #define Index_Load_Tag_SD		(Cache_SD | Index_Load_Tag)
65 #define Index_Store_Tag_SI		(Cache_SI | Index_Store_Tag)
66 #define Index_Store_Tag_SD		(Cache_SD | Index_Store_Tag)
67 #define Create_Dirty_Excl_SD		(Cache_SD | 0x0c)
68 #define Hit_Invalidate_SI		(Cache_SI | Hit_Invalidate)
69 #define Hit_Invalidate_SD		(Cache_SD | Hit_Invalidate)
70 #define Hit_Writeback_Inv_SD		(Cache_SD | Hit_Writeback_Inv)
71 #define Hit_Writeback_SD		(Cache_SD | Hit_Writeback)
72 #define Hit_Set_Virtual_SI		(Cache_SI | 0x1c)
73 #define Hit_Set_Virtual_SD		(Cache_SD | 0x1c)
74 
75 /*
76  * R5000-specific cacheops
77  */
78 #define R5K_Page_Invalidate_S		(Cache_S | 0x14)
79 
80 /*
81  * RM7000-specific cacheops
82  */
83 #define Page_Invalidate_T		(Cache_T | 0x14)
84 #define Index_Store_Tag_T		(Cache_T | Index_Store_Tag)
85 #define Index_Load_Tag_T		(Cache_T | Index_Load_Tag)
86 
87 /*
88  * R10000-specific cacheops
89  *
90  * Cacheops 0x02, 0x06, 0x0a, 0x0c-0x0e, 0x16, 0x1a and 0x1e are unused.
91  * Most of the _S cacheops are identical to the R4000SC _SD cacheops.
92  */
93 #define Index_Writeback_Inv_S		(Cache_S | Index_Writeback_Inv)
94 #define Index_Load_Tag_S		(Cache_S | Index_Load_Tag)
95 #define Index_Store_Tag_S		(Cache_S | Index_Store_Tag)
96 #define Hit_Invalidate_S		(Cache_S | Hit_Invalidate)
97 #define Cache_Barrier			0x14
98 #define Hit_Writeback_Inv_S		(Cache_S | Hit_Writeback_Inv)
99 #define Index_Load_Data_I		(Cache_I | 0x18)
100 #define Index_Load_Data_D		(Cache_D | 0x18)
101 #define Index_Load_Data_S		(Cache_S | 0x18)
102 #define Index_Store_Data_I		(Cache_I | 0x1c)
103 #define Index_Store_Data_D		(Cache_D | 0x1c)
104 #define Index_Store_Data_S		(Cache_S | 0x1c)
105 
106 /*
107  * Loongson2-specific cacheops
108  */
109 #define Hit_Invalidate_I_Loongson2	(Cache_I | 0x00)
110 
111 /*
112  * Loongson3-specific cacheops
113  */
114 #define Index_Writeback_Inv_V		(Cache_V | Index_Writeback_Inv)
115 
116 #endif	/* __ASM_CACHEOPS_H */
117