OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application
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* edma_test.c
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.% e5 i3 m- W) s! U" Y) f$ k
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE& F1 \7 h( Q- [8 A/ S! j
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.7 T x4 E2 R2 t
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/+ M* T7 n# i4 {* B* _7 t' N" q
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* This program is free software; you can redistribute it and/or( Y' I# x" J, v& Q. c7 n! S! \
* modify it under the terms of the GNU General Public License as0 @- V9 F# a ^) I
* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the* Z6 Q6 ]' D6 w2 f+ ^
* GNU General Public License for more details.( \( a* V- [' K% w, k; _
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>. h" w7 P' D7 q$ B9 p
#include <linux/sysctl.h>: O1 C( j* R+ r# J) y
#include <linux/mm.h>! ?6 w+ c" M( e. d( I% ~6 L
#include <linux/dma-mapping.h>; j5 a% H: s a. \6 N9 ~8 z
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>2 N) c' H6 O: Q9 _8 b9 t/ p4 p
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#undef EDMA3_DEBUG) P& J/ M& `/ Y1 n3 u
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
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#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else: A: I4 o% _8 n- L/ B3 R
#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT) J" |1 ^, \& I F+ i
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3; y3 @4 f8 d" _) V E* P
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21: X; _8 @& N9 ]) Z
#define TCCHEN_SHIFT 22& `2 I6 _% _. y* K1 i# Y. r+ t, q
#define ITCCHEN_SHIFT 23) |# g) t* @8 I5 K1 W( [' P% f
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static volatile int irqraised1 = 0;% v/ [ h+ c# W; i4 f' }$ p
static volatile int irqraised2 = 0;
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);( y2 r7 m0 `0 Y$ S+ p. U
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dma_addr_t dmaphyssrc1 = 0;; f7 H! a. e4 ]# }
dma_addr_t dmaphyssrc2 = 0;$ R9 Z r% Y# i% G" m
dma_addr_t dmaphysdest1 = 0;5 t2 a9 K; r0 {$ \# J$ ?
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;$ B4 C, G. p9 f' U$ j; O$ q
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;+ N- ^- s! v9 X; ?' H: M
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static int acnt = 512; h6 w/ \6 W# z
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);) o" w. D1 g- x7 |+ ` H% q
module_param(bcnt, int, S_IRUGO);7 ^' c0 j8 X d5 W; a$ n# [% r6 l
module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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[未解决] OMAPL138如何在Linux下使用EDMA3驱动