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- o$ j0 u4 c0 h0 r& Q+ B- e
/*
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* edma_test.c
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*
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* brief EDMA3 Test Application6 Z6 o) \6 O: Q8 Y
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* This file contains EDMA3 Test code.& P* Z% w& i5 q& p. H
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE' p4 R2 c2 ?8 L
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT8 a; U! n- z8 N/ W( ]% L) q
* TO CHANGE.
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*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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* This program is free software; you can redistribute it and/or6 [, y" M+ H4 o7 M" A) ?- f
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.! m, M! l% O; B& V
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any: t k2 L8 _3 B# a: C- `
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the6 e6 ^- i: P5 O
* GNU General Public License for more details.
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*/
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#include <linux/module.h>$ q: i% b$ Q# N7 f, u. ]
#include <linux/init.h>* Z1 |/ W0 F% {. ?
#include <linux/errno.h>
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#include <linux/types.h>7 B J- p0 r$ `+ i/ k
#include <linux/interrupt.h>
#include <asm/io.h>2 J _; z) g+ T* w. `
#include <linux/moduleparam.h>
#include <linux/sysctl.h>9 G- S3 V0 P$ {+ V
#include <linux/mm.h>
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#include <linux/dma-mapping.h>, s: J3 c3 b: w7 R7 i: y8 |7 F
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#include <mach/memory.h>
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#include <mach/hardware.h>7 G2 h: _: `* ?' c- ~5 n
#include <mach/irqs.h> n" L2 R: c, T q/ G
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/3 J. r: C4 Y3 O1 q
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#ifdef EDMA3_DEBUG& O, @* {6 p5 N. V. u% D
#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__)0 n# v6 k+ K$ b- I A( q
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else+ ~6 @ o5 K; [ ^& C
#define DMA_PRINTK( x... )8 j( X" N, {0 P+ S/ l( I
#define DMA_FN_IN4 r9 u& T( \- b U% i
#define DMA_FN_OUT7 n0 P# W3 f( S& J* y
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21$ A: w; `; w& {. E& j+ s
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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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);0 h! M- E( w/ s3 _: ~- g' S4 _
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);# c8 E* C8 [/ z! X5 x- s- q' Z5 ?0 m
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);1 [& W9 Q6 e* U. D9 e
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dma_addr_t dmaphyssrc1 = 0;+ B2 w* L0 d) _" U. a) S
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;) C: P5 O$ c6 R
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char *dmabufsrc1 = NULL;; g; x2 r b- J# m: O& V% F
char *dmabufsrc2 = NULL;4 o0 w8 m+ H( y: u% R/ g
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;" n% ?2 S. P: B6 a% g
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static int acnt = 512;
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static int bcnt = 8;2 o! W" M2 k8 n( @4 D
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);2 t7 Q j+ i* ]5 B p4 X9 g
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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