/*
* include/asm-xtensa/coprocessor.h
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2003 - 2005 Tensilica Inc.
*/
#ifndef _XTENSA_COPROCESSOR_H
#define _XTENSA_COPROCESSOR_H
#include <asm/variant/core.h>
#include <asm/variant/tie.h>
#if !XCHAL_HAVE_CP
#define XTENSA_CP_EXTRA_OFFSET 0
#define XTENSA_CP_EXTRA_ALIGN 1 /* must be a power of 2 */
#define XTENSA_CP_EXTRA_SIZE 0
#else
#define XTOFS(last_start,last_size,align) \
((last_start+last_size+align-1) & -align)
#define XTENSA_CP_EXTRA_OFFSET 0
#define XTENSA_CP_EXTRA_ALIGN XCHAL_EXTRA_SA_ALIGN
#define XTENSA_CPE_CP0_OFFSET \
XTOFS(XTENSA_CP_EXTRA_OFFSET, XCHAL_EXTRA_SA_SIZE, XCHAL_CP0_SA_ALIGN)
#define XTENSA_CPE_CP1_OFFSET \
XTOFS(XTENSA_CPE_CP0_OFFSET, XCHAL_CP0_SA_SIZE, XCHAL_CP1_SA_ALIGN)
#define XTENSA_CPE_CP2_OFFSET \
XTOFS(XTENSA_CPE_CP1_OFFSET, XCHAL_CP1_SA_SIZE, XCHAL_CP2_SA_ALIGN)
#define XTENSA_CPE_CP3_OFFSET \
XTOFS(XTENSA_CPE_CP2_OFFSET, XCHAL_CP2_SA_SIZE, XCHAL_CP3_SA_ALIGN)
#define XTENSA_CPE_CP4_OFFSET \
XTOFS(XTENSA_CPE_CP3_OFFSET, XCHAL_CP3_SA_SIZE, XCHAL_CP4_SA_ALIGN)
#define XTENSA_CPE_CP5_OFFSET \
XTOFS(XTENSA_CPE_CP4_OFFSET, XCHAL_CP4_SA_SIZE, XCHAL_CP5_SA_ALIGN)
#define XTENSA_CPE_CP6_OFFSET \
XTOFS(XTENSA_CPE_CP5_OFFSET, XCHAL_CP5_SA_SIZE, XCHAL_CP6_SA_ALIGN)
#define XTENSA_CPE_CP7_OFFSET \
XTOFS(XTENSA_CPE_CP6_OFFSET, XCHAL_CP6_SA_SIZE, XCHAL_CP7_SA_ALIGN)
#define XTENSA_CP_EXTRA_SIZE \
XTOFS(XTENSA_CPE_CP7_OFFSET, XCHAL_CP7_SA_SIZE, 16)
#if XCHAL_CP_NUM > 0
# ifndef __ASSEMBLY__
/*
* Tasks that own contents of (last user) each coprocessor.
* Entries are 0 for not-owned or non-existent coprocessors.
* Note: The size of this structure is fixed to 8 bytes in entry.S
*/
typedef struct {
struct task_struct *owner; /* owner */
int offset; /* offset in cpextra space. */
} coprocessor_info_t;
# else
# define COPROCESSOR_INFO_OWNER 0
# define COPROCESSOR_INFO_OFFSET 4
# define COPROCESSOR_INFO_SIZE 8
# endif
#endif
#ifndef __ASSEMBLY__
# if XCHAL_CP_NUM > 0
struct task_struct;
extern void release_coprocessors (struct task_struct*);
extern void save_coprocessor_registers(void*, int);
# else
# define release_coprocessors(task)
# endif
#endif
#endif
#endif /* _XTENSA_COPROCESSOR_H */
