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Diffstat (limited to 'include/asm-xtensa/coprocessor.h')
| -rw-r--r-- | include/asm-xtensa/coprocessor.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/include/asm-xtensa/coprocessor.h b/include/asm-xtensa/coprocessor.h new file mode 100644 index 000000000000..a91b96dc0efe --- /dev/null +++ b/include/asm-xtensa/coprocessor.h @@ -0,0 +1,70 @@ +/* + * include/asm-xtensa/cpextra.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 <xtensa/config/core.h> + +#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 /* _XTENSA_COPROCESSOR_H */ |