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 d) K( H" y. M
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* edma_test.c
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*
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* brief EDMA3 Test Application
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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! ]2 [& [9 o9 u3 `! E$ u0 N
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT6 W- @* z C; F) C
* TO CHANGE.( ~% P2 t6 E; E0 M3 }; ~# t/ \
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/! a: T8 z/ r. n U$ B/ b$ d
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* This program is free software; you can redistribute it and/or5 |5 J8 ], }( v2 h3 U, d, p
* modify it under the terms of the GNU General Public License as3 v6 t! Y) U( h8 P- h* m0 u5 ?7 C
* published by the Free Software Foundation version 2.
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*2 _2 Q5 b. r9 r4 W
* 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! r$ W9 w8 B) {) F
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.2 ?. g5 G9 g9 c9 H. g, }1 z
*/: r. ^) y D8 f( a& R, i1 `- w
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#include <linux/module.h>8 m8 K' m! P4 Y6 s
#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>
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#include <linux/sysctl.h>9 [% o. w5 C6 A' o* h
#include <linux/mm.h>+ F( Q; F& {( K* p( t7 C- Y0 q
#include <linux/dma-mapping.h>
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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>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/2 {( R$ C; P( O: r
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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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#else6 I! F7 i3 ~4 [% D8 j
#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)# e1 z& u1 X, _# \; D6 u
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 227 m+ t: b l( ?2 n
#define ITCCHEN_SHIFT 235 c e0 @7 ]0 }) n1 ?, @
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;( Q R. g( Y& f: A) l! \$ `, T* L
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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);) N8 s9 W% ]* K/ o5 d2 `) h7 I
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);4 K! m2 u) b4 e6 s3 w7 {
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dma_addr_t dmaphyssrc1 = 0;9 o" t5 d; P, T$ v! x5 L- h6 p4 p
dma_addr_t dmaphyssrc2 = 0;- o, Q# a k9 N& o& {
dma_addr_t dmaphysdest1 = 0; i, x S3 E/ ~! C. C
dma_addr_t dmaphysdest2 = 0;' @: P7 Q" y2 w
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char *dmabufsrc1 = NULL;6 r v* a) X3 Q, A# f& Y7 A
char *dmabufsrc2 = NULL;( k: J" W" U& u" J3 ^ k' [
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;* X1 r( |0 f* {7 g! D# ^# Y" ~+ w
static int bcnt = 8;, E' R7 D6 ^1 ^
static int ccnt = 8;: P! K1 e# h6 g. |% }! L
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);6 j. Z0 p! g$ q t9 }) e6 p
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