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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/*& w Y( U) U& Z* o
* edma_test.c% s6 f) X, S2 T. G( u' x% Q9 b
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* brief EDMA3 Test Application! s1 T, _4 r0 K2 g* `
*
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* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE l G) h* N6 E
* 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/0 l7 R( H* |( Y# n, S. ^7 Q
*
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* This program is free software; you can redistribute it and/or! n& |: x/ ^$ G2 f3 ]6 y
* modify it under the terms of the GNU General Public License as# A; z9 ^$ v$ }% |: p) p4 a; p2 U5 X
* 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 any- l: a: m8 R4 E
* kind, whether express or implied; without even the implied warranty4 ^( l) Z. |: _# O( P
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the8 E+ I* S) @2 r) W) l! w+ X* D
* GNU General Public License for more details.
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#include <linux/module.h>' c4 T* G# `8 @! b( s
#include <linux/init.h>9 \ H; Y" W! o
#include <linux/errno.h>
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#include <linux/types.h>7 h5 |; M, U% {$ S/ L6 e v/ O2 M
#include <linux/interrupt.h>
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#include <asm/io.h>1 a* v1 q) a7 e2 K+ H! y
#include <linux/moduleparam.h>; e, T5 _- p- K3 V* t! \/ e! u
#include <linux/sysctl.h>
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#include <linux/mm.h>) A/ A# T+ w2 N3 x3 S/ P, V
#include <linux/dma-mapping.h>
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#include <mach/memory.h>7 a; Y% e. _, l# L! Y7 h m
#include <mach/hardware.h>
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#include <mach/irqs.h> I, f( ]4 T8 x" V! c
#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)5 K% [* ]! h( n7 z' E, f
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__): G9 A2 n, E8 M9 l" ~ e; J7 B! ^6 Q2 U
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else- @3 j: p& t. r" G9 z( T
#define DMA_PRINTK( x... )0 v/ b$ `9 s9 z$ R: U8 p
#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif7 s4 ~; L. J; S: V' h% J. h/ H9 }
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)* O3 r/ a M h
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20; p! E$ b7 [" ~: i# J5 k5 l" @, k/ J
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22/ C7 z# q% W7 n0 C3 M* P; B
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;- Y; R1 a0 X* x' }, [% N
static volatile int irqraised2 = 0;+ `' h3 X1 Z% {5 Q
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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);$ [- L( @) `: }, \, ?, F' n% X2 A
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;6 ?2 ~) Q6 v5 F, F6 k( v: M
dma_addr_t dmaphysdest2 = 0;% c! h: l4 v& g4 n i6 X' K
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;6 e& b+ o1 T# N0 I( a" W# W
char *dmabufdest2 = NULL;
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static int acnt = 512;( p% I- [5 \* {# Q1 ^
static int bcnt = 8;9 N5 m6 X7 {6 ~: P1 z
static int ccnt = 8;+ m" t7 {. \; v& d
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module_param(acnt, int, S_IRUGO);" X( a+ Z* ]; q: [- N% c8 ]
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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