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' E; p2 z- n1 N" H# B
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* brief EDMA3 Test Application: X, ~' i! |+ Y% @
*
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* This file contains EDMA3 Test code.
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*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE: ^( \% _ S( e
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT; O9 k6 l! K5 m" |* m
* TO CHANGE.9 Q8 d% `: B/ f
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/( t ]. i7 ~5 J# U( H& C. f
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* This program is free software; you can redistribute it and/or$ c) g; ? d* {$ M
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any$ {7 N1 ]# Y) e: r. v! X
* 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.
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#include <linux/module.h>5 l7 \& A2 b0 v
#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>9 X; s8 H k) }8 O! I' R1 B( `9 N
#include <asm/io.h>4 J4 U" K3 o6 ~7 H- p. e a1 N
#include <linux/moduleparam.h>9 J8 S! z2 ^7 h$ w& f
#include <linux/sysctl.h>, F' ]" O, ]1 q0 B, I6 |
#include <linux/mm.h>
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#include <linux/dma-mapping.h>* Y( y; i Y$ O) m9 j* |9 R
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#include <mach/memory.h>
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#include <mach/hardware.h>% y+ Z; b; W! v! z/ E( P! t
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG( A4 }1 S: w+ P9 @
/*#define EDMA3_DEBUG*/" }% I; r+ ~6 O7 z* b0 c8 w
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#ifdef EDMA3_DEBUG$ {" Z6 f1 `1 @0 ]' Q
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)1 g$ O. v$ P& D- H
#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__)
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#else! e& e6 [; K2 J
#define DMA_PRINTK( x... )( R1 M% ?; x d$ _% _" {: O
#define DMA_FN_IN/ ~/ a1 ]/ i7 I' l
#define DMA_FN_OUT4 y, ?% K D& a J, V0 g5 v7 X9 s1 j
#endif) S9 O- B* C6 {8 n) s6 @
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)* P* q7 w) @- _+ m, V- L
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22' ^0 c) B6 |" C# {* m4 @
#define ITCCHEN_SHIFT 238 f: D- }1 G1 Q0 K' V3 j: | y+ ?
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static volatile int irqraised1 = 0;/ F# B$ X" S( Y) M8 z' x
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);& { x/ x( w+ W
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);4 [* K2 `+ M6 I, r6 `
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dma_addr_t dmaphyssrc1 = 0;8 m- s- k! i6 P2 k) ^
dma_addr_t dmaphyssrc2 = 0;) b/ e/ ^6 F2 }8 R2 p
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;: A# a* Y6 v1 m6 Q! M* B \, o- c0 n
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;' g) T, z6 x; j& @# ?
char *dmabufdest1 = NULL;6 \0 I5 z z3 \
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;6 v5 i, }4 r; h; b: a: k& `) Q0 O/ g
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);0 z8 g- Q$ Z0 @6 e# V+ B4 N' a
module_param(bcnt, int, S_IRUGO);! A3 [, S! ~" j# i6 H& N
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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