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3be80aae VG |
1 | /* |
2 | * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 as | |
6 | * published by the Free Software Foundation. | |
7 | */ | |
8 | ||
9 | #ifndef __ARC_ASM_CACHE_H | |
10 | #define __ARC_ASM_CACHE_H | |
11 | ||
12 | /* In case $$ not config, setup a dummy number for rest of kernel */ | |
13 | #ifndef CONFIG_ARC_CACHE_LINE_SHIFT | |
14 | #define L1_CACHE_SHIFT 6 | |
15 | #else | |
16 | #define L1_CACHE_SHIFT CONFIG_ARC_CACHE_LINE_SHIFT | |
17 | #endif | |
18 | ||
19 | #define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) | |
63d2dfdb | 20 | #define CACHE_LINE_MASK (~(L1_CACHE_BYTES - 1)) |
95d6976d | 21 | |
da1677b0 | 22 | /* |
c4aa49df | 23 | * ARC700 doesn't cache any access in top 1G (0xc000_0000 to 0xFFFF_FFFF) |
da1677b0 VG |
24 | * Ideal for wiring memory mapped peripherals as we don't need to do |
25 | * explicit uncached accesses (LD.di/ST.di) hence more portable drivers | |
26 | */ | |
27 | #define ARC_UNCACHED_ADDR_SPACE 0xc0000000 | |
28 | ||
95d6976d VG |
29 | #ifndef __ASSEMBLY__ |
30 | ||
31 | /* Uncached access macros */ | |
32 | #define arc_read_uncached_32(ptr) \ | |
33 | ({ \ | |
34 | unsigned int __ret; \ | |
35 | __asm__ __volatile__( \ | |
36 | " ld.di %0, [%1] \n" \ | |
37 | : "=r"(__ret) \ | |
38 | : "r"(ptr)); \ | |
39 | __ret; \ | |
40 | }) | |
41 | ||
42 | #define arc_write_uncached_32(ptr, data)\ | |
43 | ({ \ | |
44 | __asm__ __volatile__( \ | |
45 | " st.di %0, [%1] \n" \ | |
46 | : \ | |
47 | : "r"(data), "r"(ptr)); \ | |
48 | }) | |
49 | ||
95d6976d VG |
50 | #define ARCH_DMA_MINALIGN L1_CACHE_BYTES |
51 | ||
95d6976d VG |
52 | extern void arc_cache_init(void); |
53 | extern char *arc_cache_mumbojumbo(int cpu_id, char *buf, int len); | |
07b9b651 | 54 | extern void read_decode_cache_bcr(void); |
da1677b0 | 55 | |
f2b0b25a | 56 | extern int ioc_exists; |
deaf7565 | 57 | extern unsigned long perip_base; |
f2b0b25a | 58 | |
da1677b0 | 59 | #endif /* !__ASSEMBLY__ */ |
95d6976d | 60 | |
ef680cdc VG |
61 | /* Instruction cache related Auxiliary registers */ |
62 | #define ARC_REG_IC_BCR 0x77 /* Build Config reg */ | |
63 | #define ARC_REG_IC_IVIC 0x10 | |
64 | #define ARC_REG_IC_CTRL 0x11 | |
65 | #define ARC_REG_IC_IVIL 0x19 | |
ef680cdc | 66 | #define ARC_REG_IC_PTAG 0x1E |
5a364c2a | 67 | #define ARC_REG_IC_PTAG_HI 0x1F |
ef680cdc VG |
68 | |
69 | /* Bit val in IC_CTRL */ | |
70 | #define IC_CTRL_CACHE_DISABLE 0x1 | |
71 | ||
72 | /* Data cache related Auxiliary registers */ | |
73 | #define ARC_REG_DC_BCR 0x72 /* Build Config reg */ | |
74 | #define ARC_REG_DC_IVDC 0x47 | |
75 | #define ARC_REG_DC_CTRL 0x48 | |
76 | #define ARC_REG_DC_IVDL 0x4A | |
77 | #define ARC_REG_DC_FLSH 0x4B | |
78 | #define ARC_REG_DC_FLDL 0x4C | |
ef680cdc | 79 | #define ARC_REG_DC_PTAG 0x5C |
5a364c2a | 80 | #define ARC_REG_DC_PTAG_HI 0x5F |
ef680cdc VG |
81 | |
82 | /* Bit val in DC_CTRL */ | |
83 | #define DC_CTRL_INV_MODE_FLUSH 0x40 | |
84 | #define DC_CTRL_FLUSH_STATUS 0x100 | |
85 | ||
d1f317d8 VG |
86 | /*System-level cache (L2 cache) related Auxiliary registers */ |
87 | #define ARC_REG_SLC_CFG 0x901 | |
795f4558 VG |
88 | #define ARC_REG_SLC_CTRL 0x903 |
89 | #define ARC_REG_SLC_FLUSH 0x904 | |
90 | #define ARC_REG_SLC_INVALIDATE 0x905 | |
91 | #define ARC_REG_SLC_RGN_START 0x914 | |
92 | #define ARC_REG_SLC_RGN_END 0x916 | |
93 | ||
94 | /* Bit val in SLC_CONTROL */ | |
95 | #define SLC_CTRL_IM 0x040 | |
96 | #define SLC_CTRL_DISABLE 0x001 | |
97 | #define SLC_CTRL_BUSY 0x100 | |
98 | #define SLC_CTRL_RGN_OP_INV 0x200 | |
d1f317d8 | 99 | |
f2b0b25a AB |
100 | /* IO coherency related Auxiliary registers */ |
101 | #define ARC_REG_IO_COH_ENABLE 0x500 | |
102 | #define ARC_REG_IO_COH_PARTIAL 0x501 | |
103 | #define ARC_REG_IO_COH_AP0_BASE 0x508 | |
104 | #define ARC_REG_IO_COH_AP0_SIZE 0x509 | |
105 | ||
3be80aae | 106 | #endif /* _ASM_CACHE_H */ |