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 application4 R% V8 S, }4 T
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* edma_test.c! S! S- A# Z7 I: e+ f) l
*
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.
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*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT; ^8 C$ S: s$ P( F( s
* TO CHANGE.
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*- ^* e4 e% \$ i k$ f3 k$ D* H
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/2 C/ p1 N; Z# w& A7 a! a
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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 as0 S) ]- E X8 R
* published by the Free Software Foundation version 2.: K( m/ d. C3 J8 m
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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 warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the Y1 ~, w9 y8 v4 H- T+ x" T
* GNU General Public License for more details.
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*/
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#include <linux/module.h>' K8 S4 }$ E0 U n9 ]& K5 Y+ N) X
#include <linux/init.h>
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#include <linux/errno.h>6 h0 ?. ^. P) x8 g- G( J/ O
#include <linux/types.h>
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#include <linux/interrupt.h>. U5 `7 F' O* a ?0 a
#include <asm/io.h>& V% x6 B4 ^: q9 B. b1 [! h" L" t [
#include <linux/moduleparam.h>. c# N! [' R+ s. X. b7 M
#include <linux/sysctl.h> T" k8 Y+ e5 L6 S( u6 K9 D5 W* W& V2 }
#include <linux/mm.h>% i' g, ]' L1 Y# ^0 O
#include <linux/dma-mapping.h>
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#include <mach/memory.h># \9 S* {9 e% A) }. d
#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
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/*#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)
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#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)* Q" P) k' ?+ b* j$ |! H$ u
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__): F' F; K x* D) S/ x* \
#else) f! O2 j% G. c5 j7 x
#define DMA_PRINTK( x... )
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#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)! b; R6 b4 {/ L- J0 `# q0 h# Z4 A& Q
#define STATIC_SHIFT 3! n, v- n! J. G5 O
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;5 _' P. ]5 u' @ c
static volatile int irqraised2 = 0;# K. }8 k$ a+ p( c4 g
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);$ z% F9 Z3 n% q: Z6 v4 Z
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);
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;+ r% n+ v9 o1 p# }( J
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;5 _" h. R( I1 g4 E
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char *dmabufsrc1 = NULL;3 Z) } F9 B6 `9 r; p f/ Q5 T
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;% X2 a2 k4 n. S! ~
char *dmabufdest2 = NULL;0 g. X, }. h6 k; b$ W- G! B
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static int acnt = 512;
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static int bcnt = 8;& q* U @, g m& Z
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);/ m5 A' G% h; C7 _* e4 O
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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