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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/** L' U% ]! `0 ^ M8 G7 ]8 h! ?
* edma_test.c8 J' l- m4 W& l! E8 v6 t
*
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.9 _& ~! }) R) k1 t H- I
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE2 L3 K |' C' U0 a a% u
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.; X7 ~" [1 L1 g
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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# G: i' o3 X2 E+ D
* published by the Free Software Foundation version 2.
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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
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* GNU General Public License for more details.$ Y$ O9 j' }0 c
*/
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#include <linux/module.h>
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#include <linux/init.h>- L9 y0 M) }) i1 a/ C$ \7 O
#include <linux/errno.h>9 j4 Z1 j0 V) J) d' e4 i% R
#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>& u- D& w/ T5 d5 y- q
#include <linux/sysctl.h>
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#include <linux/mm.h>" T6 q0 [! c4 S+ T4 w
#include <linux/dma-mapping.h>" d& E/ q! ^1 {& \8 t5 {$ f! _ M
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#include <mach/memory.h>) u2 h/ _; }# y3 J: f$ u, M- e
#include <mach/hardware.h> z' @. s- f, v1 r# c8 B5 a: b0 v
#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*/ B% g" d- R* Q6 H
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#ifdef EDMA3_DEBUG7 B( Q4 Y" c7 M& \
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)# \2 k, l4 O6 L4 ^
#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__)1 h. N0 W7 E' Y. b9 @7 c
#else; m$ E0 r" J m/ Y1 |; a! Z1 T
#define DMA_PRINTK( x... )
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#define DMA_FN_IN2 C7 ]. L" I& ~5 M4 T0 Z1 v- r
#define DMA_FN_OUT% U4 V* @( W( M9 M& Z7 w2 T) b
#endif. v( d, d" _, \6 a# _
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#define MAX_DMA_TRANSFER_IN_BYTES (32768); P g5 N1 X# s/ W
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20& Q, F$ c2 T0 M) K U. U4 _9 b5 g6 @
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22$ C+ s! z8 Q2 U9 I
#define ITCCHEN_SHIFT 23" |( q" Q, A: v+ {* v9 U
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static volatile int irqraised1 = 0;' b8 Y- l3 ~0 T9 H
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);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);3 G) X+ o3 ?% B; ?! k
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;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;% e$ c1 `) y8 Q" ~) w
char *dmabufdest2 = NULL;* Q/ _' M0 J: S1 L+ @+ r6 V) C
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static int acnt = 512;
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static int bcnt = 8;5 O, D- y) k* ?
static int ccnt = 8;& Q' Y( J1 |* e( i. h/ `
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);, l8 l0 X+ Q- F% x4 f4 k G# r
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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