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 application1 n$ ?- a3 w- g. {
/*1 S* H/ T J/ p: x+ ]* W# J6 L9 ]
* edma_test.c- p8 S/ [9 J3 Y
*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.6 ]5 F- l7 ^/ K, B$ `% p
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE& @$ L4 z7 A& ]- [( s6 P
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.' P0 p4 u: t0 J# Q8 A4 z
*
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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! U$ Y) L) j% X" m1 y8 u3 X
* 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$ X* T0 Y# @8 G
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any$ V- d2 y" B2 ^ [ P& a- Q+ z
* kind, whether express or implied; without even the implied warranty" N* c7 m ?4 O8 p* l: F) B
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.& @. r" w, Y. |3 s5 V
*/
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#include <linux/module.h>; h% z6 L; O) b; X0 Z4 u* [; T: _
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h># \4 _" z* n, k9 g8 J/ g
#include <linux/moduleparam.h>! A: O% ?2 y: {# L. k. o
#include <linux/sysctl.h>4 n9 {9 c, J8 A a
#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>0 s9 Q& M) F* I2 P
#include <mach/hardware.h>6 d( e- h( U3 P' d
#include <mach/irqs.h>, ^2 X. d/ ?$ \( {5 e6 b5 n: @
#include <asm/hardware/edma.h>1 [. N* a# `0 c9 r) l7 A
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#undef EDMA3_DEBUG" c: J3 |8 d( X) C9 J1 c6 J' M
/*#define EDMA3_DEBUG*/( a X1 M. ^" |: f" `8 s/ m
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#ifdef EDMA3_DEBUG! ~' M/ x9 u' ?% t" N7 T) }3 M C
#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__)# t6 w& |9 X) R- Q4 l
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )1 J) K2 F" Z& Y6 {4 r8 H
#define DMA_FN_IN+ A; U3 J% |' C* @( p( Z
#define DMA_FN_OUT# S6 v' X% l9 j1 G
#endif! S, ^( _7 j/ f ^0 Y0 g, P' L
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3* J3 E# T" V. u2 F$ q" r
#define TCINTEN_SHIFT 205 }8 U5 N; a; u( G# p7 o1 t
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22! A; w9 Q! B4 c& o) [4 @# v7 l
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;7 Q; e+ ? b9 F
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);6 r d' j; h; E) q+ b
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);) H# g( H) N( {* k$ J( K6 f
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dma_addr_t dmaphyssrc1 = 0;2 ~; ]% z1 Q4 ~/ D
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;& d- r6 \+ F% e; O* Q3 v
dma_addr_t dmaphysdest2 = 0;8 N% Q( k) Q6 \9 i* @
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char *dmabufsrc1 = NULL;( |0 H6 e2 c* P5 y- G' a& A9 c. t. C
char *dmabufsrc2 = NULL;# n6 ~) }$ W \' k+ {9 e
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;+ `1 s% [8 Y; ]0 N: @% r
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static int acnt = 512;" s4 q! [# \# L* T
static int bcnt = 8;
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static int ccnt = 8;2 Y1 R% z( a, [6 I
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module_param(acnt, int, S_IRUGO);7 ^ K7 m K$ h/ D9 [
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