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
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/*' ]4 s5 z+ w5 ^4 L! U9 B
* edma_test.c, k D$ `6 a5 a
*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.' v3 I# |1 _4 d: f8 Z2 q' P& n
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE, j2 a/ a& c7 X& S
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT& c# [) T* O$ y( e7 n) e& @
* TO CHANGE.# y4 w% f/ j* i& G
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/" o& {6 D4 V1 d1 S% F+ t
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* This program is free software; you can redistribute it and/or1 I7 _: k, H9 s
* modify it under the terms of the GNU General Public License as9 j+ e, C$ C- `: y6 A2 u$ k+ @9 t/ P
* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any% _2 J) U8 R' c3 y
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the9 \6 b4 a3 J2 u! N; I
* GNU General Public License for more details.
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#include <linux/module.h>5 U9 ^5 j2 d6 E2 G! N0 q6 u# E( s9 }8 E% {
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>- [" Y! H8 Z- q0 Z
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>
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#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_DEBUG3 c; ?4 z8 Y6 q7 [7 T/ A. b
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG; X0 J9 Z$ ?/ G% m! H% R& A
#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__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)8 l6 F) i' ~+ i2 F6 `' [7 d
#else
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#define DMA_PRINTK( x... )2 C6 J0 B) x- h* N: y7 o
#define DMA_FN_IN9 k3 i2 S2 v% B: ?
#define DMA_FN_OUT3 Q5 {4 @0 O' Q' i+ U
#endif5 P2 l; V9 A2 R4 e, y' F
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)1 A5 R. G$ f( `1 A: j7 D
#define STATIC_SHIFT 3- M/ P9 W2 W: E/ }1 q# o/ \
#define TCINTEN_SHIFT 204 N5 @0 N/ i4 B
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22 B" q8 m9 J' O# z
#define ITCCHEN_SHIFT 231 r) P9 x' R% { M! F
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static volatile int irqraised1 = 0;1 E7 U5 o; j) d9 i5 o5 E
static volatile int irqraised2 = 0;) I2 b/ x0 z' W8 G$ {9 N
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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);2 y, @9 [1 t+ j- S* ~7 f
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;' \, Z2 K' C+ n
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;, b1 \3 {9 F* D* c
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char *dmabufsrc1 = NULL;/ m7 ^! m/ |! s& z3 \" H
char *dmabufsrc2 = NULL;* P4 {3 V! l% T/ o+ C
char *dmabufdest1 = NULL;. K) q" o: y+ L
char *dmabufdest2 = NULL;/ T n* q/ ~( g+ R, G6 I) {
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static int acnt = 512;
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static int bcnt = 8;) ^3 {6 ^. k% E; D
static int ccnt = 8; m/ A; Y7 A! F8 h
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module_param(acnt, int, S_IRUGO);0 r6 X3 d+ x% s& M
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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