1 #ifndef CYGONCE_HAL_CACHE_H
2 #define CYGONCE_HAL_CACHE_H
4 //=============================================================================
8 // HAL cache control API
10 //=============================================================================
11 //####ECOSGPLCOPYRIGHTBEGIN####
12 // -------------------------------------------
13 // This file is part of eCos, the Embedded Configurable Operating System.
14 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
15 // Copyright (C) 2003 Gary Thomas
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42 // -------------------------------------------
43 //####ECOSGPLCOPYRIGHTEND####
44 //=============================================================================
45 //#####DESCRIPTIONBEGIN####
47 // Author(s): nickg, gthomas
48 // Contributors: nickg, gthomas
50 // Purpose: Cache control API
51 // Description: The macros defined here provide the HAL APIs for handling
52 // cache control operations.
54 // #include <cyg/hal/hal_cache.h>
58 //####DESCRIPTIONEND####
60 //=============================================================================
62 #include <cyg/infra/cyg_type.h>
64 //-----------------------------------------------------------------------------
68 //#define HAL_DCACHE_SIZE 0 // Size of data cache in bytes
69 //#define HAL_DCACHE_LINE_SIZE 0 // Size of a data cache line
70 //#define HAL_DCACHE_WAYS 0 // Associativity of the cache
73 //#define HAL_ICACHE_SIZE 0 // Size of cache in bytes
74 //#define HAL_ICACHE_LINE_SIZE 0 // Size of a cache line
75 //#define HAL_ICACHE_WAYS 0 // Associativity of the cache
77 //#define HAL_DCACHE_SETS (HAL_DCACHE_SIZE/(HAL_DCACHE_LINE_SIZE*HAL_DCACHE_WAYS))
78 //#define HAL_ICACHE_SETS (HAL_ICACHE_SIZE/(HAL_ICACHE_LINE_SIZE*HAL_ICACHE_WAYS))
80 //-----------------------------------------------------------------------------
81 // Global control of data cache
83 // Enable the data cache
84 #define HAL_DCACHE_ENABLE()
86 // Disable the data cache
87 #define HAL_DCACHE_DISABLE()
89 // Invalidate the entire cache
90 #define HAL_DCACHE_INVALIDATE_ALL()
92 // Synchronize the contents of the cache with memory.
93 #define HAL_DCACHE_SYNC()
95 // Purge contents of data cache
96 #define HAL_DCACHE_PURGE_ALL()
98 // Query the state of the data cache (does not affect the caching)
99 #define HAL_DCACHE_IS_ENABLED(_state_) \
104 // Set the data cache refill burst size
105 //#define HAL_DCACHE_BURST_SIZE(_size_)
107 // Set the data cache write mode
108 //#define HAL_DCACHE_WRITE_MODE( _mode_ )
110 //#define HAL_DCACHE_WRITETHRU_MODE 0
111 //#define HAL_DCACHE_WRITEBACK_MODE 1
113 // Load the contents of the given address range into the data cache
114 // and then lock the cache so that it stays there.
115 //#define HAL_DCACHE_LOCK(_base_, _size_)
117 // Undo a previous lock operation
118 //#define HAL_DCACHE_UNLOCK(_base_, _size_)
120 // Unlock entire cache
121 //#define HAL_DCACHE_UNLOCK_ALL()
123 //-----------------------------------------------------------------------------
124 // Data cache line control
126 // Allocate cache lines for the given address range without reading its
127 // contents from memory.
128 //#define HAL_DCACHE_ALLOCATE( _base_ , _size_ )
130 // Write dirty cache lines to memory and invalidate the cache entries
131 // for the given address range.
132 //#define HAL_DCACHE_FLUSH( _base_ , _size_ )
134 // Invalidate cache lines in the given range without writing to memory.
135 //#define HAL_DCACHE_INVALIDATE( _base_ , _size_ )
137 // Write dirty cache lines to memory for the given address range.
138 //#define HAL_DCACHE_STORE( _base_ , _size_ )
140 // Preread the given range into the cache with the intention of reading
142 //#define HAL_DCACHE_READ_HINT( _base_ , _size_ )
144 // Preread the given range into the cache with the intention of writing
146 //#define HAL_DCACHE_WRITE_HINT( _base_ , _size_ )
148 // Allocate and zero the cache lines associated with the given range.
149 //#define HAL_DCACHE_ZERO( _base_ , _size_ )
151 //-----------------------------------------------------------------------------
152 // Global control of Instruction cache
154 // Enable the instruction cache
155 #define HAL_ICACHE_ENABLE()
157 // Disable the instruction cache
158 #define HAL_ICACHE_DISABLE()
160 // Invalidate the entire cache
161 #define HAL_ICACHE_INVALIDATE_ALL()
163 // Synchronize the contents of the cache with memory.
164 #define HAL_ICACHE_SYNC()
166 // Query the state of the instruction cache (does not affect the caching)
167 #define HAL_ICACHE_IS_ENABLED(_state_) \
172 // Set the instruction cache refill burst size
173 //#define HAL_ICACHE_BURST_SIZE(_size_)
175 // Load the contents of the given address range into the instruction cache
176 // and then lock the cache so that it stays there.
177 //#define HAL_ICACHE_LOCK(_base_, _size_)
179 // Undo a previous lock operation
180 //#define HAL_ICACHE_UNLOCK(_base_, _size_)
182 // Unlock entire cache
183 //#define HAL_ICACHE_UNLOCK_ALL()
185 //-----------------------------------------------------------------------------
186 // Instruction cache line control
188 // Invalidate cache lines in the given range without writing to memory.
189 //#define HAL_ICACHE_INVALIDATE( _base_ , _size_ )
191 //-----------------------------------------------------------------------------
192 #endif // ifndef CYGONCE_HAL_CACHE_H
193 // End of hal_cache.h