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 application0 \3 T6 X( \5 y6 m6 e6 n' b2 `
/*
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* edma_test.c
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*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.
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*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.
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*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/' H2 R+ v* G$ _ k4 K" ?) S; x+ v& ~8 Y
*
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* This program is free software; you can redistribute it and/or- z$ I7 j1 e& {! D$ f
* modify it under the terms of the GNU General Public License as0 Y' K5 n6 s/ I0 X) h' V
* published by the Free Software Foundation version 2." J9 |6 K$ m( U6 O% @7 \
*
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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 the1 g* Z+ ?; C' u- f' H
* GNU General Public License for more details.2 U2 L; W6 U: T1 B: t7 h7 p
*/
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#include <linux/module.h>. U1 M1 B; a, p/ M) e% p
#include <linux/init.h>) G! Q* L2 V( H a- r8 R
#include <linux/errno.h>" a5 R& p- b+ Z. H4 v7 ~
#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>
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#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>$ S4 H& S/ U4 \) S/ \
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#include <mach/memory.h>+ L: n, d& A: R. p: a
#include <mach/hardware.h>! U1 \% h' q: D4 f T) P# d. J+ ]
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>6 {) X: r4 o! J: g3 q3 M7 }" V
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/+ P/ v; Y6 K4 F$ o8 B
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#ifdef EDMA3_DEBUG& I7 O2 G7 `8 M- l+ }9 }) R
#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) b% V* a. C5 y+ J9 d1 o% r; [! D8 _
#define DMA_PRINTK( x... )& Z/ w- V" d K. N
#define DMA_FN_IN
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#define DMA_FN_OUT3 a, K% S% q8 _+ |! J: ~/ d
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3# X+ i ]3 A2 i, w2 ~" j$ `
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;1 k8 B* \5 { H2 x* g3 x
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);- p, S' o0 t9 A
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);) r; D( F) \! z) K
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);. a$ n# U( L* y2 z6 c
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dma_addr_t dmaphyssrc1 = 0;% ]5 w( P9 J2 x4 z6 h( R
dma_addr_t dmaphyssrc2 = 0;, u$ J6 h" b, T1 F
dma_addr_t dmaphysdest1 = 0;: u9 B( b# v- q- J8 A9 j
dma_addr_t dmaphysdest2 = 0;0 W B" I% ]; @6 {5 x
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char *dmabufsrc1 = NULL;5 Z' R7 _8 g3 U- u
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;$ c0 l; x& M+ l- T+ @
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);; o" l- I4 C4 d* P f3 \5 v
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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