| 1 |
|
| 2 | |
| 3 | * arch/arm/include/asm/outercache.h
|
| 4 | *
|
| 5 | * Copyright (C) 2010 ARM Ltd.
|
| 6 | * Written by Catalin Marinas <[email protected]>
|
| 7 |
|
| 8 |
|
| 9 | #ifndef __ASM_OUTERCACHE_H
|
| 10 | #define __ASM_OUTERCACHE_H
|
| 11 |
|
| 12 | #include <linux/types.h>
|
| 13 |
|
| 14 | struct l2x0_regs;
|
| 15 |
|
| 16 | struct outer_cache_fns {
|
| 17 | void (*inv_range)(unsigned long, unsigned long);
|
| 18 | void (*clean_range)(unsigned long, unsigned long);
|
| 19 | void (*flush_range)(unsigned long, unsigned long);
|
| 20 | void (*flush_all)(void);
|
| 21 | void (*disable)(void);
|
| 22 | #ifdef CONFIG_OUTER_CACHE_SYNC
|
| 23 | void (*sync)(void);
|
| 24 | #endif
|
| 25 | void (*resume)(void);
|
| 26 |
|
| 27 |
|
| 28 | void (*write_sec)(unsigned long, unsigned);
|
| 29 | void (*configure)(const struct l2x0_regs *);
|
| 30 | };
|
| 31 |
|
| 32 | extern struct outer_cache_fns outer_cache;
|
| 33 |
|
| 34 | #ifdef CONFIG_OUTER_CACHE
|
| 35 | |
| 36 | * outer_inv_range - invalidate range of outer cache lines
|
| 37 | * @start: starting physical address, inclusive
|
| 38 | * @end: end physical address, exclusive
|
| 39 |
|
| 40 | static inline void outer_inv_range(phys_addr_t start, phys_addr_t end)
|
| 41 | {
|
| 42 | if (outer_cache.inv_range)
|
| 43 | outer_cache.inv_range(start, end);
|
| 44 | }
|
| 45 |
|
| 46 | |
| 47 | * outer_clean_range - clean dirty outer cache lines
|
| 48 | * @start: starting physical address, inclusive
|
| 49 | * @end: end physical address, exclusive
|
| 50 |
|
| 51 | static inline void outer_clean_range(phys_addr_t start, phys_addr_t end)
|
| 52 | {
|
| 53 | if (outer_cache.clean_range)
|
| 54 | outer_cache.clean_range(start, end);
|
| 55 | }
|
| 56 |
|
| 57 | |
| 58 | * outer_flush_range - clean and invalidate outer cache lines
|
| 59 | * @start: starting physical address, inclusive
|
| 60 | * @end: end physical address, exclusive
|
| 61 |
|
| 62 | static inline void outer_flush_range(phys_addr_t start, phys_addr_t end)
|
| 63 | {
|
| 64 | if (outer_cache.flush_range)
|
| 65 | outer_cache.flush_range(start, end);
|
| 66 | }
|
| 67 |
|
| 68 | |
| 69 | * outer_flush_all - clean and invalidate all cache lines in the outer cache
|
| 70 | *
|
| 71 | * Note: depending on implementation, this may not be atomic - it must
|
| 72 | * only be called with interrupts disabled and no other active outer
|
| 73 | * cache masters.
|
| 74 | *
|
| 75 | * It is intended that this function is only used by implementations
|
| 76 | * needing to override the outer_cache.disable() method due to security.
|
| 77 | * (Some implementations perform this as a clean followed by an invalidate.)
|
| 78 |
|
| 79 | static inline void outer_flush_all(void)
|
| 80 | {
|
| 81 | if (outer_cache.flush_all)
|
| 82 | outer_cache.flush_all();
|
| 83 | }
|
| 84 |
|
| 85 | |
| 86 | * outer_disable - clean, invalidate and disable the outer cache
|
| 87 | *
|
| 88 | * Disable the outer cache, ensuring that any data contained in the outer
|
| 89 | * cache is pushed out to lower levels of system memory. The note and
|
| 90 | * conditions above concerning outer_flush_all() applies here.
|
| 91 |
|
| 92 | extern void outer_disable(void);
|
| 93 |
|
| 94 | |
| 95 | * outer_resume - restore the cache configuration and re-enable outer cache
|
| 96 | *
|
| 97 | * Restore any configuration that the cache had when previously enabled,
|
| 98 | * and re-enable the outer cache.
|
| 99 |
|
| 100 | static inline void outer_resume(void)
|
| 101 | {
|
| 102 | if (outer_cache.resume)
|
| 103 | outer_cache.resume();
|
| 104 | }
|
| 105 |
|
| 106 | #else
|
| 107 |
|
| 108 | static inline void outer_inv_range(phys_addr_t start, phys_addr_t end)
|
| 109 | { }
|
| 110 | static inline void outer_clean_range(phys_addr_t start, phys_addr_t end)
|
| 111 | { }
|
| 112 | static inline void outer_flush_range(phys_addr_t start, phys_addr_t end)
|
| 113 | { }
|
| 114 | static inline void outer_flush_all(void) { }
|
| 115 | static inline void outer_disable(void) { }
|
| 116 | static inline void outer_resume(void) { }
|
| 117 |
|
| 118 | #endif
|
| 119 |
|
| 120 | #endif
|