diff options
Diffstat (limited to 'arch/riscv/include/asm/cache.h')
| -rw-r--r-- | arch/riscv/include/asm/cache.h | 36 |
1 files changed, 27 insertions, 9 deletions
diff --git a/arch/riscv/include/asm/cache.h b/arch/riscv/include/asm/cache.h index e8f0d1110d74..eb42b739d132 100644 --- a/arch/riscv/include/asm/cache.h +++ b/arch/riscv/include/asm/cache.h @@ -1,15 +1,7 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2017 Chen Liqin <liqin.chen@sunplusct.com> * Copyright (C) 2012 Regents of the University of California - * - * 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, version 2. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #ifndef _ASM_RISCV_CACHE_H @@ -19,4 +11,30 @@ #define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) +#ifdef CONFIG_RISCV_DMA_NONCOHERENT +#define ARCH_DMA_MINALIGN L1_CACHE_BYTES +#define ARCH_KMALLOC_MINALIGN (8) +#endif + +/* + * RISC-V requires the stack pointer to be 16-byte aligned, so ensure that + * the flat loader aligns it accordingly. + */ +#ifndef CONFIG_MMU +#define ARCH_SLAB_MINALIGN 16 +#endif + +#ifndef __ASSEMBLER__ + +extern int dma_cache_alignment; +#ifdef CONFIG_RISCV_DMA_NONCOHERENT +#define dma_get_cache_alignment dma_get_cache_alignment +static inline int dma_get_cache_alignment(void) +{ + return dma_cache_alignment; +} +#endif + +#endif /* __ASSEMBLER__ */ + #endif /* _ASM_RISCV_CACHE_H */ |