100 lines
3.2 KiB
C
100 lines
3.2 KiB
C
/*
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* wARM - exporting ARM processor specific privileged services to userspace
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* library functions
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*
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* Copyright (c) Gražvydas "notaz" Ignotas, 2009
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the organization nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __WARM_H__
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#define __WARM_H__ 1
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/* cache operations (warm_cache_op_*):
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* o clean - write dirty data to memory, but also leave in cache.
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* o invalidate - throw away everything in cache, losing dirty data.
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*
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* Write buffer is always drained, no ops will only drain WB
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*/
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#define WOP_D_CLEAN (1 << 0)
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#define WOP_D_INVALIDATE (1 << 1)
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#define WOP_I_INVALIDATE (1 << 2)
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/* change C and B bits (warm_change_cb_*)
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* if is_set in not zero, bits are set, else cleared.
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* the address for range function is virtual address.
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*/
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#define WCB_C_BIT (1 << 0)
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#define WCB_B_BIT (1 << 1)
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#ifndef __ASSEMBLER__
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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int warm_init(void);
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int warm_cache_op_range(int ops, void *virt_addr, unsigned long size);
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int warm_cache_op_all(int ops);
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int warm_change_cb_upper(int cb, int is_set);
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int warm_change_cb_range(int cb, int is_set, void *virt_addr, unsigned long size);
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unsigned long warm_virt2phys(const void *ptr);
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void warm_finish(void);
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#ifdef __cplusplus
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}
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#endif
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/* internal */
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#ifdef WARM_CODE
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#include <linux/ioctl.h>
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#define WARM_IOCTL_BASE 'A'
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struct warm_cache_op
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{
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unsigned long addr;
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unsigned long size;
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int ops;
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};
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struct warm_change_cb
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{
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unsigned long addr;
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unsigned long size;
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int cb;
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int is_set;
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};
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#define WARMC_CACHE_OP _IOW(WARM_IOCTL_BASE, 0, struct warm_cache_op)
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#define WARMC_CHANGE_CB _IOW(WARM_IOCTL_BASE, 1, struct warm_change_cb)
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#define WARMC_VIRT2PHYS _IOWR(WARM_IOCTL_BASE, 2, unsigned long)
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#endif /* WARM_CODE */
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#endif /* !__ASSEMBLER__ */
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#endif /* __WARM_H__ */
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