1 /*
2 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
3 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this list of
9 * conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
12 * of conditions and the following disclaimer in the documentation and/or other materials
13 * provided with the distribution.
14 *
15 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
16 * to endorse or promote products derived from this software without specific prior written
17 * permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include "los_vm_iomap.h"
33 #include "los_printf.h"
34 #include "los_vm_zone.h"
35 #include "los_vm_common.h"
36 #include "los_vm_map.h"
37 #include "los_memory.h"
38
39
LOS_DmaMemAlloc(DMA_ADDR_T * dmaAddr,size_t size,size_t align,enum DmaMemType type)40 VOID *LOS_DmaMemAlloc(DMA_ADDR_T *dmaAddr, size_t size, size_t align, enum DmaMemType type)
41 {
42 VOID *kVaddr = NULL;
43
44 if (size == 0) {
45 return NULL;
46 }
47
48 if ((type != DMA_CACHE) && (type != DMA_NOCACHE)) {
49 VM_ERR("The dma type = %d is not supported!", type);
50 return NULL;
51 }
52
53 #ifdef LOSCFG_KERNEL_VM
54 kVaddr = LOS_KernelMallocAlign(size, align);
55 #else
56 kVaddr = LOS_MemAllocAlign(OS_SYS_MEM_ADDR, size, align);
57 #endif
58 if (kVaddr == NULL) {
59 VM_ERR("failed, size = %u, align = %u", size, align);
60 return NULL;
61 }
62
63 if (dmaAddr != NULL) {
64 *dmaAddr = (DMA_ADDR_T)LOS_PaddrQuery(kVaddr);
65 }
66
67 if (type == DMA_NOCACHE) {
68 kVaddr = (VOID *)VMM_TO_UNCACHED_ADDR((UINTPTR)kVaddr);
69 }
70
71 return kVaddr;
72 }
73
LOS_DmaMemFree(VOID * vaddr)74 VOID LOS_DmaMemFree(VOID *vaddr)
75 {
76 UINTPTR addr;
77
78 if (vaddr == NULL) {
79 return;
80 }
81 addr = (UINTPTR)vaddr;
82
83 if ((addr >= UNCACHED_VMM_BASE) && (addr < UNCACHED_VMM_BASE + UNCACHED_VMM_SIZE)) {
84 addr = UNCACHED_TO_VMM_ADDR(addr);
85 #ifdef LOSCFG_KERNEL_VM
86 LOS_KernelFree((VOID *)addr);
87 #else
88 LOS_MemFree(OS_SYS_MEM_ADDR, (VOID *)addr);
89 #endif
90 } else if ((addr >= KERNEL_VMM_BASE) && (addr < KERNEL_VMM_BASE + KERNEL_VMM_SIZE)) {
91 #ifdef LOSCFG_KERNEL_VM
92 LOS_KernelFree((VOID *)addr);
93 #else
94 LOS_MemFree(OS_SYS_MEM_ADDR, (VOID *)addr);
95 #endif
96 } else {
97 VM_ERR("addr %#x not in dma area!!!", vaddr);
98 }
99 return;
100 }
101
LOS_DmaVaddrToPaddr(VOID * vaddr)102 DMA_ADDR_T LOS_DmaVaddrToPaddr(VOID *vaddr)
103 {
104 return (DMA_ADDR_T)LOS_PaddrQuery(vaddr);
105 }
106
107