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/ R- T7 n0 M; Q5 _6 r
/*; Z( n% F8 d4 ?) l% j
* edma_test.c: u! g: y7 E4 P& V
*
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.* H3 F5 L* N& \# o& u9 {- ^: {
*
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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.* c6 ?" ]6 _/ M
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or+ i/ V3 a' n* i
* modify it under the terms of the GNU General Public License as$ W1 T7 i2 P$ m' ` }0 Q8 l; U4 v- f$ B
* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any5 S5 Y! o y6 M/ d* x) s0 o3 O
* kind, whether express or implied; without even the implied warranty# R$ Z* [; Y( m
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.8 ~5 {) b+ B- w1 {) m* a
*/! b2 J8 X* d0 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>3 z3 H8 n) N' Y. y
#include <linux/types.h>
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#include <linux/interrupt.h>, O: P/ N; A! \1 F
#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>, `# s& l) C) z$ a& O
#include <linux/mm.h>
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#include <linux/dma-mapping.h># J' N5 m3 b6 ?/ K& K
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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>8 O. I4 G$ Y$ W# N3 a3 Y. D3 ]
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#undef EDMA3_DEBUG
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/*#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)5 u) C9 F) O7 Z
#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__)# a0 i( o* Z' N0 s, @( [$ B' r" d- R
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif5 ~& U7 q3 b3 f B
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)# W3 J7 N9 M4 f6 A% \3 ^
#define STATIC_SHIFT 32 f" e5 a& o% x: h' g
#define TCINTEN_SHIFT 204 }# B. q1 q7 f) f6 h2 h
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22% C7 S( G' S4 S+ |) ~1 }& M* V
#define ITCCHEN_SHIFT 23' E, h6 r# w( x4 C
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;6 a& r8 Z! @" u! ^- B% z/ p
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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);8 g4 s$ b3 c0 d, R$ L
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;: }- J& a# W* q3 O1 _! J8 i; _
dma_addr_t dmaphysdest1 = 0;* Z$ [/ E( ]$ h" H8 t
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;! t9 }/ o0 X8 a7 y6 K/ x2 p( S
char *dmabufdest1 = NULL;$ e: A3 {+ f. |7 E# z8 G9 H9 V
char *dmabufdest2 = NULL;2 [; P, P# X# E, O/ o
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;3 t1 @9 F7 }* p9 l/ O6 Y I% }
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module_param(acnt, int, S_IRUGO);1 V/ S5 m, b6 L" E; Y
module_param(bcnt, int, S_IRUGO);7 v( t p2 |. h7 A a
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