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 application6 J, \" j G1 ]2 Y
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* edma_test.c
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*
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* brief EDMA3 Test Application% d# Y9 M8 g+ @+ j; \
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* This file contains EDMA3 Test code.
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*/ S1 a+ f) A: D5 s) C) a, I0 y
* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE& h5 Q. X0 k+ E1 T; R& X' y' {
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE." r6 ^$ S. M$ E1 W# v
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/7 y, [5 k* E! _' S# M+ ^% B- Z
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* This program is free software; you can redistribute it and/or5 @$ h% B- p3 @) g3 J, ?, |: E) _
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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*" F3 s- P9 s7 m( n: M/ z8 f
* This program is distributed "as is" WITHOUT ANY WARRANTY of any6 ~) k1 [$ N7 ]* \9 L' p
* kind, whether express or implied; without even the implied warranty' ?. |9 N: \; s1 v% n. u+ N
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.9 B0 U' L& |" ~& s0 B# U
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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>( G- D6 G3 { c% E
#include <asm/io.h>: {% z* j" \( C7 S, ?
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>. \2 W. \- u' R: ^, r9 z
#include <linux/dma-mapping.h>
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#include <mach/memory.h>- O0 m. c9 W |7 {8 l0 l
#include <mach/hardware.h>
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#include <mach/irqs.h>3 }. k" ]* v- E" ~
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/2 V; S8 J; Y! Y0 d- t
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)+ ~/ e: L# T6 C; j9 ~: [
#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__)8 n1 P/ D8 y0 K/ L9 g% z
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN/ C5 @9 c% ]" l2 S/ h( d6 }7 s
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)8 [7 x0 j: v s# o4 Q3 x& c7 ^& k
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 202 Y$ l$ e* \& ~/ Y6 C: R! O
#define ITCINTEN_SHIFT 214 Q) O7 o& N. J. u4 |! T
#define TCCHEN_SHIFT 22 I& O7 y8 z8 ]+ S- `/ o! ^
#define ITCCHEN_SHIFT 231 F' X0 A2 u3 O; K! u2 H2 T; a
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static volatile int irqraised1 = 0;- X# d W( t! L
static volatile int irqraised2 = 0;. Z( L" U0 ?# s; ]
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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);$ }% V+ e" v- e4 b. E/ Z
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ E% R% \+ |$ T t+ j
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dma_addr_t dmaphyssrc1 = 0;+ H& W5 c$ v+ Z* V3 Q
dma_addr_t dmaphyssrc2 = 0;9 }) I9 }% n5 n3 f( ?
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;. j+ P, g* K, D3 @7 T; L% N
char *dmabufsrc2 = NULL;! g" w( |' b& f2 |- l: Q5 F
char *dmabufdest1 = NULL;( n) P4 n) }7 [2 ?
char *dmabufdest2 = NULL;' [. I* `* ~, @4 i3 X9 S4 d/ i7 j
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static int acnt = 512;
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static int bcnt = 8;* t7 Y! k2 V1 p5 c% j
static int ccnt = 8;, `0 P* F" i1 ]- Q
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module_param(acnt, int, S_IRUGO);5 B) l/ |2 N0 B: Z
module_param(bcnt, int, S_IRUGO);
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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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