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