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 application3 o5 J. y# E) f. n G$ E
/*- R8 q: {' c4 M k; ]
* 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.3 K; O3 k& l, H! j6 q+ a
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE2 x2 ]0 l- r' @
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT0 x @' W, x) L
* TO CHANGE.
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/" j c# L+ |' I* i+ _, r
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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
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* published by the Free Software Foundation version 2.* {& }9 s7 A6 t3 b' q e
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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 warranty3 I1 n* o6 f: d+ ^
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.1 }- v5 A1 E/ @. C2 m
*/
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#include <linux/module.h>/ W6 }( P, R* w' Y
#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>. K; k5 F- }2 L# m# A O
#include <asm/io.h>) A; C( h& F: y+ ^- z
#include <linux/moduleparam.h>; S& M+ Z! K2 Q* B O, ?1 O
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>) S' r- r k7 v' p1 L, c- y
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#include <mach/memory.h>0 Z1 n8 i' m4 Y5 m' L* i2 B% b
#include <mach/hardware.h>
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#include <mach/irqs.h>! R' ?5 o% c7 ?# B; {) ^" _" r' U& `
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG6 F5 H _& ~, M i/ J- g
/*#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); U4 A3 x, d: h
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)) f3 x& X/ i9 O) L# ^- m' w+ H! O
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)6 H' F: |, J; u4 v0 x* u3 O1 |
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN; u1 Q) ?- ` Y
#define DMA_FN_OUT
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#endif; s6 E1 y, j+ X- `. Q5 t4 j0 z! F
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)9 P( C0 }! C# y! `8 p0 j) J P
#define STATIC_SHIFT 36 `9 j9 u% f* z- C) `
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 210 c# z7 y4 h+ R- p/ E
#define TCCHEN_SHIFT 22+ f& x& F. p% G! }% |: E+ e
#define ITCCHEN_SHIFT 238 h( h# n$ j q( I0 B
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static volatile int irqraised1 = 0;4 I' d- f. o( L' j, S; K: ~
static volatile int irqraised2 = 0;6 I" O% P, x9 F( n% u# W' u
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);- l' c0 a( o0 o' e0 l' q
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);0 ^, q, E& A& ^+ E5 w
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dma_addr_t dmaphyssrc1 = 0;& r+ R( `8 Z, G
dma_addr_t dmaphyssrc2 = 0;8 |" W: m3 _% |4 U
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;* R. {" T. s3 C% ^9 ]
char *dmabufsrc2 = NULL;" p4 }8 C4 J0 _% v; y
char *dmabufdest1 = NULL;8 y1 u$ d4 m" V4 T+ y9 ~
char *dmabufdest2 = NULL;
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static int acnt = 512;: }! \4 W$ ~; Y) ]# x
static int bcnt = 8;( _" L i, t. j+ U
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);* M9 U0 U: Y `! ^/ }- Y& `" f1 b
module_param(bcnt, int, S_IRUGO);" u: ?! R- L- c* {" R
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