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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/*
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* edma_test.c
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* brief EDMA3 Test Application9 [" N Z+ Y' `7 t# l0 O, U
*
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* This file contains EDMA3 Test code.5 J/ y) V' j( d
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE, g- g1 ~) O( P/ c. A( A. S9 y) B
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.
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*
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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) F& `9 e4 \4 S6 \) B+ O
* modify it under the terms of the GNU General Public License as& |3 C! y7 c: `
* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any6 ^4 w8 V# S: I' D* i: V
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the8 c$ k/ O( g/ O3 Z, K/ E4 p
* GNU General Public License for more details.8 B X, R! j& V3 z
*/
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#include <linux/module.h>7 h+ M+ Z7 `+ r$ r& A. i1 j
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>4 \2 j5 D. X' G$ ]# \
#include <linux/interrupt.h>1 O6 S- C. l' H5 V0 u
#include <asm/io.h>
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#include <linux/moduleparam.h>, ?' a% n+ J/ H, e, _' D
#include <linux/sysctl.h>1 |. c8 ^1 G: d# Z
#include <linux/mm.h>
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#include <linux/dma-mapping.h># @& t( X+ C- l+ {3 h
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#include <mach/memory.h>
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#include <mach/hardware.h>) ]7 `6 L0 R: D6 _9 r% W
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG! g1 |- t4 {! Q. ?2 u. s) S5 l- ?
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG& K" Y5 U2 D2 Q+ l/ J( u) a+ J2 ~
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)# z2 W: i' S: z' w8 i) \
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)9 M5 K% {1 h0 q9 S# K% d+ J, z
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)2 L8 }4 \. l- Q: Y R9 f, w# t$ P
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif5 {& S' s+ }, P+ a7 ?/ f: }. L
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3! l% S" D8 b6 n+ C3 b
#define TCINTEN_SHIFT 20& ~. q3 d# Q% ~' L
#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;" G/ X; i6 X4 x/ M8 z
static volatile int irqraised2 = 0;; B8 O4 ^% v- e% \& w4 Y; D, 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);1 V, E+ l- T0 ^# M* ?
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);/ P. U6 b1 C4 d5 z/ N+ P m& G5 ?
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;' r, X+ s7 U( s* D
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;" ], x5 m0 Z6 p* `
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;# @2 D) }6 E& a# M' ]" n
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;( D% V3 i0 H3 u! i6 w V
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module_param(acnt, int, S_IRUGO);
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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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[未解决] OMAPL138如何在Linux下使用EDMA3驱动