mirror of
https://github.com/nitraiolo/CfgUSBLoader.git
synced 2024-10-22 14:15:05 +02:00
56 lines
1.5 KiB
C
56 lines
1.5 KiB
C
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/*
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* DIP plugin for Custom IOS.
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*
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* Copyright (C) 2008-2010 Waninkoko, WiiGator.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "types.h"
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/* DMA constants */
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#define DMA1_START_ADDRESS 0x00000000
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#define DMA1_END_ADDRESS 0x01800000
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#define DMA2_START_ADDRESS 0x10000000
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#define DMA2_END_ADDRESS 0x13618000
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s32 DMA_CheckRange(void *outbuf, u32 size, u32 alignment)
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{
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u32 mem;
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s32 ret = 0;
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/* Output buffer address */
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mem = (u32)outbuf;
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/* Check for memory alignment */
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if (!(mem & 31)) {
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u32 dmalen = 0;
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/* DMA1 range check */
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if ((mem >= DMA1_START_ADDRESS) && (mem < DMA1_END_ADDRESS))
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dmalen = (DMA1_END_ADDRESS - mem);
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/* DMA2 range check */
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if ((mem >= DMA2_START_ADDRESS) && (mem < DMA2_END_ADDRESS))
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dmalen = (DMA2_END_ADDRESS - mem);
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if (dmalen >= alignment)
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ret = (dmalen < size) ? dmalen : size;
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ret -= (ret & (alignment - 1));
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}
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return ret;
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}
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