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/ J4 @/ q4 Y1 w5 T! }
/*
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* edma_test.c
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.& f, x9 Z G( v2 }
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE, [% a" Z2 }9 \* I0 h$ y9 {; P
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT. d- w% t0 _) B5 y4 x! R
* TO CHANGE.3 O, j+ M( I [
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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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 2.6 |0 K2 N( v; b- k. C; r- r2 T
*+ i- [3 |3 z% Y* K, X
* 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! m6 p+ w* X1 R; m ^1 B
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.2 O8 j0 m4 v! v1 _8 x6 v
*/! Z5 ]$ F) Y: Y
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#include <linux/module.h>
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#include <linux/init.h>2 Y5 q. W; a* p1 Y0 q7 ^
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>4 D6 U0 A4 M+ _: p' k
#include <linux/sysctl.h>+ C; B' e3 H. C1 i5 G( M- z
#include <linux/mm.h>, o) a1 S6 _0 N! T% ^1 B4 d+ U
#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>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG$ U# G/ q1 W* k. ~, E
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG x( `+ f( d |( z8 n' q6 y& t
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)8 N6 p' ^, ~1 ~" A" Q0 z" x
#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__)
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#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT% a/ f+ h+ I/ B$ k
#endif) T; ]6 A- C$ \
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#define MAX_DMA_TRANSFER_IN_BYTES (32768): X, q( H7 T9 v! r, P/ L1 Z
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20) \% V; b3 x g+ z$ _
#define ITCINTEN_SHIFT 21( m# j- H3 s3 U; F8 M
#define TCCHEN_SHIFT 22 E: \" M* i5 ?$ w( e1 U
#define ITCCHEN_SHIFT 237 {5 f( @, h1 ^: v* _# i4 f: 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);- v, H0 r+ \; s; T. M6 s
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);7 k$ i0 K; y3 v( w
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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dma_addr_t dmaphyssrc1 = 0;1 q/ m9 \0 V3 ^; k7 c' z8 u; W
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;; y2 u: T7 L0 J6 x+ r P: P5 J
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char *dmabufsrc1 = NULL;7 g6 ?' c7 w( F1 D
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;( R" X& B) R( F8 X! J" [
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static int acnt = 512;
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static int bcnt = 8;. k+ f! h0 F5 I9 r+ `3 C+ J+ ?( N+ B9 [5 O
static int ccnt = 8;% b2 `1 o$ Z1 o" p
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module_param(acnt, int, S_IRUGO);. y* P! \2 z% _' n& X: z4 B
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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