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91 lines
2.6 KiB
C
91 lines
2.6 KiB
C
/**
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* @file usb_mem.h
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* @brief
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*
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* Copyright (c) 2022 sakumisu
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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*/
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#ifndef _USB_MEM_H
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#define _USB_MEM_H
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#ifndef CONFIG_DCACHE_LINE_SIZE
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#define CONFIG_DCACHE_LINE_SIZE 32
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#endif
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#ifdef CONFIG_USB_DCACHE_ENABLE
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#define USB_NOCACHE_RAM_SECTION __attribute__((section(".nocache_ram")))
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#define USB_MEM_ALIGN32 __attribute__((aligned(CONFIG_DCACHE_LINE_SIZE)))
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#else
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#define USB_NOCACHE_RAM_SECTION
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#define USB_MEM_ALIGN32
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#endif
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#define usb_malloc(size) malloc(size)
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#define usb_free(ptr) free(ptr)
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#ifdef CONFIG_USB_DCACHE_ENABLE
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static inline void *usb_iomalloc(size_t size)
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{
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void *ptr;
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void *align_ptr;
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int uintptr_size;
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size_t align_size;
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unsigned long align = CONFIG_DCACHE_LINE_SIZE;
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/* sizeof pointer */
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uintptr_size = sizeof(void *);
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uintptr_size -= 1;
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/* align the alignment size to uintptr size byte */
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align = ((align + uintptr_size) & ~uintptr_size);
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/* get total aligned size */
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align_size = ((size + uintptr_size) & ~uintptr_size) + align;
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/* allocate memory block from heap */
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ptr = usb_malloc(align_size);
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if (ptr != NULL) {
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/* the allocated memory block is aligned */
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if (((unsigned long)ptr & (align - 1)) == 0) {
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align_ptr = (void *)((unsigned long)ptr + align);
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} else {
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align_ptr = (void *)(((unsigned long)ptr + (align - 1)) & ~(align - 1));
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}
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/* set the pointer before alignment pointer to the real pointer */
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*((unsigned long *)((unsigned long)align_ptr - sizeof(void *))) = (unsigned long)ptr;
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ptr = align_ptr;
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}
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return ptr;
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}
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static inline void usb_iofree(void *ptr)
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{
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void *real_ptr;
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real_ptr = (void *)*(unsigned long *)((unsigned long)ptr - sizeof(void *));
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usb_free(real_ptr);
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}
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#else
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#define usb_iomalloc(size) usb_malloc(size)
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#define usb_iofree(ptr) usb_free(ptr)
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#endif
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#endif
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