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
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/*2 X& }5 O6 `- |1 C7 R( P o
* edma_test.c
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*
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* brief EDMA3 Test Application7 @6 \' v2 p5 c4 ~0 u- d
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* This file contains EDMA3 Test code.4 h5 \5 S( e& H1 A" j6 o* h
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE8 u) Z' M: \) N. X& q; Y h/ X
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.9 J. b! D8 j/ Q5 n4 V l6 X
*
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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/or4 Q+ `# w5 }% s6 {. I% K
* modify it under the terms of the GNU General Public License as3 p7 \- j* Z+ |) Q( V
* published by the Free Software Foundation version 2.
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*- |! D: p2 p% A/ l
* This program is distributed "as is" WITHOUT ANY WARRANTY of any- X; W& ^2 j% l- g' R, H
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.! I" S2 \* r# G) W" Q
*/
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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>3 J1 l( u: i" v* n6 ~
#include <linux/interrupt.h>
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#include <asm/io.h>+ {$ g0 S7 [, o o* D L! q/ \6 \2 ]
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>5 ]- J# Q/ U: G: b5 `) Q+ _0 X
#include <linux/mm.h>( [) V& ~! r" Z7 l) W( v( K. Y6 N
#include <linux/dma-mapping.h>- ^; o6 r# E. _: \
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#include <mach/memory.h>
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#include <mach/hardware.h>1 i7 G1 \' M$ @8 i$ h
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>3 L# J& P7 B0 c" j
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#undef EDMA3_DEBUG. r. h' g# C- R, V, N* I
/*#define EDMA3_DEBUG*/4 A# s5 K; \* C: A( I
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#ifdef EDMA3_DEBUG* x. d9 n8 j2 b* |9 W
#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__)4 D" z& R# N! e! I
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN9 k4 W7 Q1 \* g% C4 r
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 30 r- Y+ @; b8 B1 p2 B/ X5 m
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22( D: P# w* n/ _# X# u$ L
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;* r0 t" |" o% m' A. Z0 I4 `; I( e
static volatile int irqraised2 = 0;* z0 C; Q0 n, D% x
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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);; q/ ?+ m& S9 N, ?1 O
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);3 v4 G; u6 k% B7 o
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dma_addr_t dmaphyssrc1 = 0;# A& a. `" E3 F( r" R
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;6 v/ w- t; q7 O% E
char *dmabufsrc2 = NULL;; j: f3 V& r0 a0 L) {. y8 C7 b
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;' }1 Y1 U# x# u7 I1 J) z
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static int acnt = 512;4 a& V. }( X* o* M9 O* }
static int bcnt = 8;) O' l; F2 O% ]+ M9 M
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);) A `1 s/ ]2 b& o1 \; N! F$ V, b1 Y
module_param(bcnt, int, S_IRUGO);' Y& H5 [- M. P8 r( s2 ?
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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