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 p; k3 x3 g0 L- r! b" ^2 b- _. v
/*- q2 h6 y. _8 C2 [1 o p7 W7 ^
* edma_test.c3 a) D; U8 G# {6 n, L) M
*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.5 H2 R8 Z- [ X. f. k9 R
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE6 Y! F- P5 b8 U
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.0 Y4 T1 w: k# ?, q* 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/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., B- e( U; d- i4 i2 I) p
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any$ \/ ^! A% B# {/ l& i( k
* kind, whether express or implied; without even the implied warranty0 _& O5 _1 y2 J0 [
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the. ^/ c. y) p) J# _$ _* h
* 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>( ?% S8 C0 n9 u/ L2 r/ {
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>- s( M# M( ^! h. r* a# k) c
#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>" j d6 o8 f, b$ y! L
#include <linux/mm.h>
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#include <linux/dma-mapping.h> v5 `- H) g* j o
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#include <mach/memory.h>0 _+ O E) X& F
#include <mach/hardware.h>
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#include <mach/irqs.h>6 k$ }3 D, p, a
#include <asm/hardware/edma.h>" a$ s; q- [$ F- u7 s% P, V& p
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG: c0 ]7 F- ~" Z, @5 K8 S
#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__)$ Z1 `+ [4 O& |( w& a; W. c( V
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else( S; \: ]; S# {0 |
#define DMA_PRINTK( x... )( @& t/ A6 K- ^7 T
#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)% K* I1 w6 G0 s; N' x
#define STATIC_SHIFT 3( }) H" F0 Q4 G( U% q- r
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22& {9 h( g. a1 f- ^
#define ITCCHEN_SHIFT 23& r2 t: G5 S7 P) z& R# F% w
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;% H0 o) K- I. x/ W0 }: 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);0 `" n( S- P% I8 Z
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);, l9 O( y5 P1 U
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dma_addr_t dmaphyssrc1 = 0;& q7 s8 B- T2 Y0 S# T/ W, U
dma_addr_t dmaphyssrc2 = 0;1 m! }0 s2 |. a
dma_addr_t dmaphysdest1 = 0;9 W, P" |/ m2 G9 ]5 N
dma_addr_t dmaphysdest2 = 0;9 v7 v( M0 R( a: t9 ^' s
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;: M3 F, H8 G& w+ e
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512; s, G$ J) P4 j# }) d A. I! h
static int bcnt = 8;
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static int ccnt = 8; ?# z) E0 S% |4 v/ d
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module_param(acnt, int, S_IRUGO);% {: g( x2 w" x: i2 p' z
module_param(bcnt, int, S_IRUGO);' A5 `9 h, v1 V( C. ^& 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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[未解决] OMAPL138如何在Linux下使用EDMA3驱动