107 lines
3.3 KiB
C
107 lines
3.3 KiB
C
/*
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* Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
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* Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "los_vm_iomap.h"
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#include "los_printf.h"
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#include "los_vm_zone.h"
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#include "los_vm_common.h"
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#include "los_vm_map.h"
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#include "los_memory.h"
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VOID *LOS_DmaMemAlloc(DMA_ADDR_T *dmaAddr, size_t size, size_t align, enum DmaMemType type)
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{
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VOID *kVaddr = NULL;
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if (size == 0) {
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return NULL;
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}
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if ((type != DMA_CACHE) && (type != DMA_NOCACHE)) {
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VM_ERR("The dma type = %d is not support!", type);
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return NULL;
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}
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#ifdef LOSCFG_KERNEL_VM
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kVaddr = LOS_KernelMallocAlign(size, align);
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#else
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kVaddr = LOS_MemAllocAlign(OS_SYS_MEM_ADDR, size, align);
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#endif
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if (kVaddr == NULL) {
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VM_ERR("failed, size = %u, align = %u", size, align);
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return NULL;
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}
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if (dmaAddr != NULL) {
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*dmaAddr = (DMA_ADDR_T)LOS_PaddrQuery(kVaddr);
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}
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if (type == DMA_NOCACHE) {
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kVaddr = (VOID *)VMM_TO_UNCACHED_ADDR((UINTPTR)kVaddr);
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}
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return kVaddr;
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}
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VOID LOS_DmaMemFree(VOID *vaddr)
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{
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UINTPTR addr;
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if (vaddr == NULL) {
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return;
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}
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addr = (UINTPTR)vaddr;
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if ((addr >= UNCACHED_VMM_BASE) && (addr < UNCACHED_VMM_BASE + UNCACHED_VMM_SIZE)) {
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addr = UNCACHED_TO_VMM_ADDR(addr);
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#ifdef LOSCFG_KERNEL_VM
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LOS_KernelFree((VOID *)addr);
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#else
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LOS_MemFree(OS_SYS_MEM_ADDR, (VOID *)addr);
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#endif
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} else if ((addr >= KERNEL_VMM_BASE) && (addr < KERNEL_VMM_BASE + KERNEL_VMM_SIZE)) {
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#ifdef LOSCFG_KERNEL_VM
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LOS_KernelFree((VOID *)addr);
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#else
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LOS_MemFree(OS_SYS_MEM_ADDR, (VOID *)addr);
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#endif
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} else {
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VM_ERR("addr %#x not in dma area!!!", vaddr);
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}
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return;
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}
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DMA_ADDR_T LOS_DmaVaddrToPaddr(VOID *vaddr)
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{
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return (DMA_ADDR_T)LOS_PaddrQuery(vaddr);
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}
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