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# b1 k! y4 A/ Y. h, J
/** E6 o) Y+ ]0 V3 M
* edma_test.c9 Y6 ~- E4 J% E" s. S
*
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* brief EDMA3 Test Application' _' w% c' @* e
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* This file contains EDMA3 Test code.3 s& W) T5 v8 }6 B* F% g0 N
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE8 E" y" x) \( G1 ]7 c
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.5 c. Z1 W* `1 U; k. X+ H3 E
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as$ I6 C. I6 X& K' d$ g5 l
* 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 any
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* kind, whether express or implied; without even the implied warranty- C0 u' F, M. T' {
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the3 c4 p1 e* X' k
* GNU General Public License for more details.. I1 [7 ]' G5 t: X \6 R
*/
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#include <linux/module.h>9 m6 U7 U/ k( I9 v
#include <linux/init.h>2 _$ U( m# l& U
#include <linux/errno.h>* n7 \- i4 M* O5 {
#include <linux/types.h>5 R# s9 b$ Q' c. h' ^, X
#include <linux/interrupt.h>4 t& a8 }6 {% P
#include <asm/io.h>; d- G6 a9 Z, U0 c
#include <linux/moduleparam.h>) V$ u" b" i# z* [
#include <linux/sysctl.h>6 V( k. D* [( a# l4 w* ^( ~3 K
#include <linux/mm.h>* C9 a6 Y" L6 Q& v8 K# x
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>! h1 x/ }( s: s; n
#include <mach/irqs.h>8 z" e0 ], {2 L
#include <asm/hardware/edma.h>) H5 h! @! f, J, W% n
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#undef EDMA3_DEBUG% A+ F3 g! A4 L/ e5 O% ]
/*#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)+ ]$ F7 q e7 e& k# F# u
#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__); w: j% l7 Q- T% i0 M
#else; W$ \# q4 Z* r. T- ~2 s1 j* `
#define DMA_PRINTK( x... )# X( R. K% [ Z$ X% s
#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif5 V7 w& N' k# T! P7 J
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)( l* Q1 Q. w& B$ H+ W3 ?
#define STATIC_SHIFT 3$ U7 x2 m& f6 g( P% r/ W* J6 Y, c- i& G
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21$ c" d& u4 I. P3 v
#define TCCHEN_SHIFT 229 h* R& o; G% b! o
#define ITCCHEN_SHIFT 23, m7 a1 B, ?9 ?+ I" q
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static volatile int irqraised1 = 0;
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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);; X! x5 l9 Z$ m+ `% z
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);/ R% d5 K* h; d3 l: y: r
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dma_addr_t dmaphyssrc1 = 0;8 _* o& i: H" O* p
dma_addr_t dmaphyssrc2 = 0;+ m8 D& L' `! `; P& b* `/ t1 o9 C
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;3 w; \% M( f) c$ g: o. X$ T- r& s" l
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char *dmabufsrc1 = NULL;5 Z; a& i/ E, Q: H) s3 e+ J
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;+ w; Q( Q% H+ ?6 t6 k2 M/ k. S
char *dmabufdest2 = NULL;! e U' \) I+ y( D
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static int acnt = 512;
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static int bcnt = 8;8 ?! a. r; D0 \) H N7 `) _
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);" U% M' r1 h8 i7 s$ `
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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