| /* |
| * Copyright (C) 2003-2004 Hewlett-Packard Co |
| * David Mosberger-Tang <davidm@hpl.hp.com> |
| * Copyright (C) 2012 ARM Ltd. |
| * Copyright (C) 2016 SiFive, Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| * 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. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| */ |
| #ifndef __ASM_RISCV_DMA_MAPPING_H |
| #define __ASM_RISCV_DMA_MAPPING_H |
| |
| /* Use ops->dma_mapping_error (if it exists) or assume success */ |
| // #undef DMA_ERROR_CODE |
| |
| static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) |
| { |
| return &dma_noop_ops; |
| } |
| |
| static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) |
| { |
| if (!dev->dma_mask) |
| return false; |
| |
| return addr + size - 1 <= *dev->dma_mask; |
| } |
| |
| #endif /* __ASM_RISCV_DMA_MAPPING_H */ |
