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( P3 Z& s+ V& w* t0 N1 s
/*. V1 W+ h( X* d5 T: a) a; E
* edma_test.c3 y3 d! o: f1 Z7 n, }0 N5 u( c
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.; D8 R4 j/ l( T, @1 x
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE% Z' u0 `# l5 ]' ?: l2 y
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.- l$ ?9 ]. r2 g+ _
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/" A. P* ]! F" a2 N! }' b8 X
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* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as: W! }- q# A l2 B$ n
* published by the Free Software Foundation version 2.
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*- b8 q- x6 l+ 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+ A1 B; p$ G- Q& Y) G/ X @
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the, W. }1 s/ T N2 C' S, P
* GNU General Public License for more details.
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*/
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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>, |" ?8 G+ m6 U0 Y& z
#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>3 M* p6 ]' f: n& \% Q3 i Z0 J
#include <linux/mm.h>5 \0 \9 `* @" L& Y: x* v
#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>5 d: p* k$ j( w: i
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG. a0 p4 @2 H2 n9 O$ [
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)$ ^3 q% w& W8 P4 t/ y7 {, @# \
#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__)+ ~. i- p# J3 c7 Q% ]- m+ Y0 A3 C
#else
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#define DMA_PRINTK( x... )8 u/ a9 s% A9 P! G g
#define DMA_FN_IN- c" |1 j3 P. `1 t1 c6 d# W7 C3 E$ R
#define DMA_FN_OUT8 I; }1 G) {2 F" G9 F$ w. _2 c& \
#endif0 Z" f$ T( F7 l# ^ L9 ?* p5 t. x$ p
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)/ q* w; I; H! L* v6 ?
#define STATIC_SHIFT 3$ Z" w) R* K g) ?3 p' {. h& }' j
#define TCINTEN_SHIFT 20! j4 [, j% p0 |+ q" W! @
#define ITCINTEN_SHIFT 21. m x* c- r/ f0 B% [: Y
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23+ `. j+ u& }7 x8 C v6 ~+ ]; y g
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;% t& G) h# Z! U' u+ g; k) \3 }
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);8 g j3 h% w- |# J! ?0 F
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 e7 R+ G9 U( |# w3 b1 p6 Z
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dma_addr_t dmaphyssrc1 = 0;4 E6 X' F6 V3 ], W' _, {
dma_addr_t dmaphyssrc2 = 0;7 k* Q6 b3 l, m- y, D' F s1 n
dma_addr_t dmaphysdest1 = 0;. h, H& s" K" U) E, Q
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;8 |4 S: }; o1 J3 A2 `8 ?/ O) }: y
char *dmabufdest1 = NULL;9 @( Q R5 @. B( v2 s, v6 ]
char *dmabufdest2 = NULL;7 M' L+ h* D4 K3 N
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;* J/ f9 B. d% v3 T% l8 |- t) ~) }
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);, [# F, Q" B( h W( z
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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