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367b8112fe
Move all header files for xtensa to arch/xtensa/include and platform and variant header files to the appropriate arch/xtensa/platforms/ and arch/xtensa/variants/ directories. Moving the files gets also rid of all uses of symlinks in the Makefile. This has been completed already for the majority of the architectures and xtensa is one out of six missing. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Chris Zankel <chris@zankel.net>
177 lines
5.1 KiB
C
177 lines
5.1 KiB
C
/*
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* include/asm-xtensa/coprocessor.h
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2003 - 2007 Tensilica Inc.
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*/
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#ifndef _XTENSA_COPROCESSOR_H
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#define _XTENSA_COPROCESSOR_H
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#include <linux/stringify.h>
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#include <variant/tie.h>
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#include <asm/types.h>
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#ifdef __ASSEMBLY__
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# include <variant/tie-asm.h>
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.macro xchal_sa_start a b
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.set .Lxchal_pofs_, 0
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.set .Lxchal_ofs_, 0
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.endm
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.macro xchal_sa_align ptr minofs maxofs ofsalign totalign
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.set .Lxchal_ofs_, .Lxchal_ofs_ + .Lxchal_pofs_ + \totalign - 1
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.set .Lxchal_ofs_, (.Lxchal_ofs_ & -\totalign) - .Lxchal_pofs_
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.endm
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#define _SELECT ( XTHAL_SAS_TIE | XTHAL_SAS_OPT \
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| XTHAL_SAS_CC \
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| XTHAL_SAS_CALR | XTHAL_SAS_CALE )
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.macro save_xtregs_opt ptr clb at1 at2 at3 at4 offset
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.if XTREGS_OPT_SIZE > 0
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addi \clb, \ptr, \offset
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xchal_ncp_store \clb \at1 \at2 \at3 \at4 select=_SELECT
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.endif
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.endm
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.macro load_xtregs_opt ptr clb at1 at2 at3 at4 offset
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.if XTREGS_OPT_SIZE > 0
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addi \clb, \ptr, \offset
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xchal_ncp_load \clb \at1 \at2 \at3 \at4 select=_SELECT
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.endif
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.endm
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#undef _SELECT
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#define _SELECT ( XTHAL_SAS_TIE | XTHAL_SAS_OPT \
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| XTHAL_SAS_NOCC \
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| XTHAL_SAS_CALR | XTHAL_SAS_CALE | XTHAL_SAS_GLOB )
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.macro save_xtregs_user ptr clb at1 at2 at3 at4 offset
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.if XTREGS_USER_SIZE > 0
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addi \clb, \ptr, \offset
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xchal_ncp_store \clb \at1 \at2 \at3 \at4 select=_SELECT
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.endif
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.endm
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.macro load_xtregs_user ptr clb at1 at2 at3 at4 offset
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.if XTREGS_USER_SIZE > 0
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addi \clb, \ptr, \offset
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xchal_ncp_load \clb \at1 \at2 \at3 \at4 select=_SELECT
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.endif
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.endm
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#undef _SELECT
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#endif /* __ASSEMBLY__ */
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/*
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* XTENSA_HAVE_COPROCESSOR(x) returns 1 if coprocessor x is configured.
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*
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* XTENSA_HAVE_IO_PORT(x) returns 1 if io-port x is configured.
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*
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*/
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#define XTENSA_HAVE_COPROCESSOR(x) \
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((XCHAL_CP_MASK ^ XCHAL_CP_PORT_MASK) & (1 << (x)))
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#define XTENSA_HAVE_COPROCESSORS \
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(XCHAL_CP_MASK ^ XCHAL_CP_PORT_MASK)
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#define XTENSA_HAVE_IO_PORT(x) \
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(XCHAL_CP_PORT_MASK & (1 << (x)))
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#define XTENSA_HAVE_IO_PORTS \
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XCHAL_CP_PORT_MASK
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#ifndef __ASSEMBLY__
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#if XCHAL_HAVE_CP
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#define RSR_CPENABLE(x) do { \
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__asm__ __volatile__("rsr %0," __stringify(CPENABLE) : "=a" (x)); \
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} while(0);
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#define WSR_CPENABLE(x) do { \
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__asm__ __volatile__("wsr %0," __stringify(CPENABLE) "; rsync" \
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:: "a" (x)); \
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} while(0);
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#endif /* XCHAL_HAVE_CP */
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/*
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* Additional registers.
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* We define three types of additional registers:
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* ext: extra registers that are used by the compiler
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* cpn: optional registers that can be used by a user application
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* cpX: coprocessor registers that can only be used if the corresponding
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* CPENABLE bit is set.
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*/
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#define XCHAL_SA_REG(list,cc,abi,type,y,name,z,align,size,...) \
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__REG ## list (cc, abi, type, name, size, align)
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#define __REG0(cc,abi,t,name,s,a) __REG0_ ## cc (abi,name)
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#define __REG1(cc,abi,t,name,s,a) __REG1_ ## cc (name)
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#define __REG2(cc,abi,type,...) __REG2_ ## type (__VA_ARGS__)
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#define __REG0_0(abi,name)
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#define __REG0_1(abi,name) __REG0_1 ## abi (name)
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#define __REG0_10(name) __u32 name;
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#define __REG0_11(name) __u32 name;
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#define __REG0_12(name)
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#define __REG1_0(name) __u32 name;
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#define __REG1_1(name)
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#define __REG2_0(n,s,a) __u32 name;
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#define __REG2_1(n,s,a) unsigned char n[s] __attribute__ ((aligned(a)));
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#define __REG2_2(n,s,a) unsigned char n[s] __attribute__ ((aligned(a)));
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typedef struct { XCHAL_NCP_SA_LIST(0) } xtregs_opt_t
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__attribute__ ((aligned (XCHAL_NCP_SA_ALIGN)));
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typedef struct { XCHAL_NCP_SA_LIST(1) } xtregs_user_t
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__attribute__ ((aligned (XCHAL_NCP_SA_ALIGN)));
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#if XTENSA_HAVE_COPROCESSORS
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typedef struct { XCHAL_CP0_SA_LIST(2) } xtregs_cp0_t
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__attribute__ ((aligned (XCHAL_CP0_SA_ALIGN)));
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typedef struct { XCHAL_CP1_SA_LIST(2) } xtregs_cp1_t
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__attribute__ ((aligned (XCHAL_CP1_SA_ALIGN)));
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typedef struct { XCHAL_CP2_SA_LIST(2) } xtregs_cp2_t
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__attribute__ ((aligned (XCHAL_CP2_SA_ALIGN)));
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typedef struct { XCHAL_CP3_SA_LIST(2) } xtregs_cp3_t
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__attribute__ ((aligned (XCHAL_CP3_SA_ALIGN)));
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typedef struct { XCHAL_CP4_SA_LIST(2) } xtregs_cp4_t
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__attribute__ ((aligned (XCHAL_CP4_SA_ALIGN)));
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typedef struct { XCHAL_CP5_SA_LIST(2) } xtregs_cp5_t
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__attribute__ ((aligned (XCHAL_CP5_SA_ALIGN)));
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typedef struct { XCHAL_CP6_SA_LIST(2) } xtregs_cp6_t
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__attribute__ ((aligned (XCHAL_CP6_SA_ALIGN)));
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typedef struct { XCHAL_CP7_SA_LIST(2) } xtregs_cp7_t
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__attribute__ ((aligned (XCHAL_CP7_SA_ALIGN)));
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extern struct thread_info* coprocessor_owner[XCHAL_CP_MAX];
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extern void coprocessor_save(void*, int);
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extern void coprocessor_load(void*, int);
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extern void coprocessor_flush(struct thread_info*, int);
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extern void coprocessor_restore(struct thread_info*, int);
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extern void coprocessor_release_all(struct thread_info*);
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extern void coprocessor_flush_all(struct thread_info*);
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static inline void coprocessor_clear_cpenable(void)
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{
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unsigned long i = 0;
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WSR_CPENABLE(i);
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}
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#endif /* XTENSA_HAVE_COPROCESSORS */
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#endif /* !__ASSEMBLY__ */
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#endif /* _XTENSA_COPROCESSOR_H */
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