diff options
Diffstat (limited to 'arch/mips/include/asm/msa.h')
| -rw-r--r-- | arch/mips/include/asm/msa.h | 87 |
1 files changed, 35 insertions, 52 deletions
diff --git a/arch/mips/include/asm/msa.h b/arch/mips/include/asm/msa.h index 8967b475ab10..c6077f5fa4b1 100644 --- a/arch/mips/include/asm/msa.h +++ b/arch/mips/include/asm/msa.h @@ -1,18 +1,14 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Copyright (C) 2013 Imagination Technologies - * Author: Paul Burton <paul.burton@imgtec.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. + * Author: Paul Burton <paul.burton@mips.com> */ #ifndef _ASM_MSA_H #define _ASM_MSA_H #include <asm/mipsregs.h> -#ifndef __ASSEMBLY__ +#ifndef __ASSEMBLER__ #include <asm/inst.h> @@ -160,7 +156,33 @@ static inline void init_msa_upper(void) _init_msa_upper(); } -#ifdef TOOLCHAIN_SUPPORTS_MSA +#ifndef TOOLCHAIN_SUPPORTS_MSA +/* + * Define assembler macros using .word for the c[ft]cmsa instructions in order + * to allow compilation with toolchains that do not support MSA. Once all + * toolchains in use support MSA these can be removed. + */ + +#define _ASM_SET_CFCMSA \ + _ASM_MACRO_2R(cfcmsa, rd, cs, \ + _ASM_INSN_IF_MIPS(0x787e0019 | __cs << 11 | __rd << 6) \ + _ASM_INSN32_IF_MM(0x587e0016 | __cs << 11 | __rd << 6)) +#define _ASM_UNSET_CFCMSA ".purgem cfcmsa\n\t" +#define _ASM_SET_CTCMSA \ + _ASM_MACRO_2R(ctcmsa, cd, rs, \ + _ASM_INSN_IF_MIPS(0x783e0019 | __rs << 11 | __cd << 6) \ + _ASM_INSN32_IF_MM(0x583e0016 | __rs << 11 | __cd << 6)) +#define _ASM_UNSET_CTCMSA ".purgem ctcmsa\n\t" +#else /* TOOLCHAIN_SUPPORTS_MSA */ +#define _ASM_SET_CFCMSA \ + ".set\tfp=64\n\t" \ + ".set\tmsa\n\t" +#define _ASM_UNSET_CFCMSA +#define _ASM_SET_CTCMSA \ + ".set\tfp=64\n\t" \ + ".set\tmsa\n\t" +#define _ASM_UNSET_CTCMSA +#endif #define __BUILD_MSA_CTL_REG(name, cs) \ static inline unsigned int read_msa_##name(void) \ @@ -168,9 +190,9 @@ static inline unsigned int read_msa_##name(void) \ unsigned int reg; \ __asm__ __volatile__( \ " .set push\n" \ - " .set fp=64\n" \ - " .set msa\n" \ + _ASM_SET_CFCMSA \ " cfcmsa %0, $" #cs "\n" \ + _ASM_UNSET_CFCMSA \ " .set pop\n" \ : "=r"(reg)); \ return reg; \ @@ -180,52 +202,13 @@ static inline void write_msa_##name(unsigned int val) \ { \ __asm__ __volatile__( \ " .set push\n" \ - " .set fp=64\n" \ - " .set msa\n" \ + _ASM_SET_CTCMSA \ " ctcmsa $" #cs ", %0\n" \ + _ASM_UNSET_CTCMSA \ " .set pop\n" \ : : "r"(val)); \ } -#else /* !TOOLCHAIN_SUPPORTS_MSA */ - -/* - * Define functions using .word for the c[ft]cmsa instructions in order to - * allow compilation with toolchains that do not support MSA. Once all - * toolchains in use support MSA these can be removed. - */ - -#define __BUILD_MSA_CTL_REG(name, cs) \ -static inline unsigned int read_msa_##name(void) \ -{ \ - unsigned int reg; \ - __asm__ __volatile__( \ - " .set push\n" \ - " .set noat\n" \ - " # cfcmsa $1, $%1\n" \ - _ASM_INSN_IF_MIPS(0x787e0059 | %1 << 11) \ - _ASM_INSN32_IF_MM(0x587e0056 | %1 << 11) \ - " move %0, $1\n" \ - " .set pop\n" \ - : "=r"(reg) : "i"(cs)); \ - return reg; \ -} \ - \ -static inline void write_msa_##name(unsigned int val) \ -{ \ - __asm__ __volatile__( \ - " .set push\n" \ - " .set noat\n" \ - " move $1, %0\n" \ - " # ctcmsa $%1, $1\n" \ - _ASM_INSN_IF_MIPS(0x783e0819 | %1 << 6) \ - _ASM_INSN32_IF_MM(0x583e0816 | %1 << 6) \ - " .set pop\n" \ - : : "r"(val), "i"(cs)); \ -} - -#endif /* !TOOLCHAIN_SUPPORTS_MSA */ - __BUILD_MSA_CTL_REG(ir, 0) __BUILD_MSA_CTL_REG(csr, 1) __BUILD_MSA_CTL_REG(access, 2) @@ -235,7 +218,7 @@ __BUILD_MSA_CTL_REG(request, 5) __BUILD_MSA_CTL_REG(map, 6) __BUILD_MSA_CTL_REG(unmap, 7) -#endif /* !__ASSEMBLY__ */ +#endif /* !__ASSEMBLER__ */ #define MSA_IR 0 #define MSA_CSR 1 |