| /* |
| * |
| * (C) COPYRIGHT 2008-2014 ARM Limited. All rights reserved. |
| * |
| * This program is free software and is provided to you under the terms of the |
| * GNU General Public License version 2 as published by the Free Software |
| * Foundation, and any use by you of this program is subject to the terms |
| * of such GNU licence. |
| * |
| * 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, you can access it online at |
| * http://www.gnu.org/licenses/gpl-2.0.html. |
| * |
| * SPDX-License-Identifier: GPL-2.0 |
| * |
| */ |
| |
| |
| |
| #ifndef _UMP_KERNEL_PRIV_H_ |
| #define _UMP_KERNEL_PRIV_H_ |
| |
| #ifdef __KERNEL__ |
| #include <linux/dma-mapping.h> |
| #include <linux/kernel.h> |
| #include <linux/list.h> |
| #include <asm/cacheflush.h> |
| #endif |
| |
| |
| #define UMP_EXPECTED_IDS 64 |
| #define UMP_MAX_IDS 32768 |
| |
| #ifdef __KERNEL__ |
| #define UMP_ASSERT(expr) \ |
| if (!(expr)) { \ |
| printk(KERN_ERR "UMP: Assertion failed! %s,%s,%s,line=%d\n",\ |
| #expr,__FILE__,__func__,__LINE__); \ |
| BUG(); \ |
| } |
| |
| static inline void ump_sync_to_memory(uint64_t paddr, void* vaddr, size_t sz) |
| { |
| #ifdef CONFIG_ARM |
| __cpuc_flush_dcache_area(vaddr, sz); |
| outer_flush_range(paddr, paddr+sz); |
| #elif defined(CONFIG_ARM64) |
| /*TODO (MID64-46): There's no other suitable cache flush function for ARM64 */ |
| flush_cache_all(); |
| #elif defined(CONFIG_X86) |
| struct scatterlist scl = {0, }; |
| sg_set_page(&scl, pfn_to_page(PFN_DOWN(paddr)), sz, |
| paddr & (PAGE_SIZE -1 )); |
| dma_sync_sg_for_cpu(NULL, &scl, 1, DMA_TO_DEVICE); |
| mb(); /* for outer_sync (if needed) */ |
| #else |
| #error Implement cache maintenance for your architecture here |
| #endif |
| } |
| |
| static inline void ump_sync_to_cpu(uint64_t paddr, void* vaddr, size_t sz) |
| { |
| #ifdef CONFIG_ARM |
| __cpuc_flush_dcache_area(vaddr, sz); |
| outer_flush_range(paddr, paddr+sz); |
| #elif defined(CONFIG_ARM64) |
| /* TODO (MID64-46): There's no other suitable cache flush function for ARM64 */ |
| flush_cache_all(); |
| #elif defined(CONFIG_X86) |
| struct scatterlist scl = {0, }; |
| sg_set_page(&scl, pfn_to_page(PFN_DOWN(paddr)), sz, |
| paddr & (PAGE_SIZE -1 )); |
| dma_sync_sg_for_cpu(NULL, &scl, 1, DMA_FROM_DEVICE); |
| #else |
| #error Implement cache maintenance for your architecture here |
| #endif |
| } |
| #endif /* __KERNEL__*/ |
| #endif /* _UMP_KERNEL_PRIV_H_ */ |
| |