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* f- `8 G* ]5 T9 d8 n8 y
/*
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* edma_test.c6 G) ^ n5 e' Y
*
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* brief EDMA3 Test Application1 K# \- H0 {" ~- c! a+ N
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* This file contains EDMA3 Test code. Y2 V, k8 F* ~7 \
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT- m, j( `( Q+ i3 L/ \& f& z
* TO CHANGE.1 P* Z$ ^# a4 M2 m: j! n: F, p
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/. b2 g1 T! E0 Z" P9 S8 V
*
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* This program is free software; you can redistribute it and/or1 ~4 V9 g3 O; J0 q9 \1 C
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.6 ~2 l" @) a. P- `' f
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any, N# u" U& }* m+ [( w
* kind, whether express or implied; without even the implied warranty, I4 f; `; l# `+ a8 ~
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the( \1 }: Z1 W& i) E- b( e* ]
* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/init.h>0 l& k5 f% c0 w* _' @" V. Y, u
#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>
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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>- n1 N- p, W! ]! k5 T
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#include <mach/memory.h>. b: c6 ~8 @" P) v$ A; k: _" ?
#include <mach/hardware.h>) E% F0 i! d% }2 n, @
#include <mach/irqs.h>7 w: F( E+ @ @* K$ ?7 ^. }
#include <asm/hardware/edma.h>" T, W9 ^7 e; u5 m" B
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG! |9 ]- s4 ?. K. i. f) e
#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__)- ?4 y/ \5 W5 V+ u( Q; |
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN0 x2 c6 k0 x9 B$ n7 x E: u g
#define DMA_FN_OUT6 i7 v& I7 i D i% Q8 x
#endif( s# _) }4 N/ k9 u" ?2 j H
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#define MAX_DMA_TRANSFER_IN_BYTES (32768): C& w: G+ q n5 p% l2 G$ }& S# A
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20/ O2 _) A! I1 e8 u% r
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 221 o6 j, h; e3 c# [8 |' @
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;5 [$ w. D% N6 V! C
static volatile int irqraised2 = 0;( B. _1 W2 U e& i2 n+ [; T
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);. ~4 \' d, \: g P! E" x- p( R1 Q
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);' r! ~; r( r1 E l [7 _
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);( T4 O V8 @( C1 {: v, z
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dma_addr_t dmaphyssrc1 = 0;6 P9 b g3 s3 I; @
dma_addr_t dmaphyssrc2 = 0;& K- w1 @5 I- j$ p% ]* P
dma_addr_t dmaphysdest1 = 0;/ Q+ X! J9 j# J0 n, M+ J% U& d
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;# ?1 B% t; _! K/ G1 a$ h- ~. t
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;8 m: L' @) p! b; W% h0 g
char *dmabufdest2 = NULL;% h7 X, t& L* b( h3 z& Q
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static int acnt = 512;/ @( O" u x4 \3 m, `; Z8 s
static int bcnt = 8;4 `+ [4 P7 k3 t# y% g
static int ccnt = 8;5 T" n9 o0 R/ W( g! v5 j9 t1 {
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module_param(acnt, int, S_IRUGO);1 _ J" l6 s8 |7 O( s2 R, H/ C
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