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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/*8 {1 q6 E/ y7 O: v( ?" t. o5 E2 A4 h7 f
* edma_test.c
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*
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* brief EDMA3 Test Application
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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+ @: g6 ]5 _% P! A5 R! [6 k
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT" i! }7 J) v' i& {. d: R$ ~, P
* TO CHANGE.3 R) h3 ~6 R& O' Y0 ?
*
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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! M1 X" E7 K9 M5 w
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2." c* K* I: J) |3 [5 P' _: B; x
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any6 j4 `2 b. `2 f% V( W" F
* 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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*/
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#include <linux/module.h>0 J( Z* D6 Y2 g
#include <linux/init.h>: U G3 K6 R5 o8 k& b6 {5 T+ X1 y4 E& t( p* A
#include <linux/errno.h>
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#include <linux/types.h>) X# r4 T$ t: F& x6 H5 q
#include <linux/interrupt.h>; r5 J3 E( C, c0 d6 x
#include <asm/io.h>
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#include <linux/moduleparam.h>7 R6 J# ]1 D" s: b9 S: j7 {
#include <linux/sysctl.h>
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#include <linux/mm.h>' e* k' P0 O/ v: N
#include <linux/dma-mapping.h>
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#include <mach/memory.h>2 @4 R% D- ? K. K3 @# [
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#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)" W. g' S/ s2 T; S3 O6 N2 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__)1 q) w7 c# W) _- i" V
#else* T% H% W% J: J- z1 Z
#define DMA_PRINTK( x... )
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#define DMA_FN_IN5 v) d/ s% K/ [& k
#define DMA_FN_OUT% x4 t5 I: Y& F" V, Z5 d5 B" n m
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768) V# U3 B& w5 w! c
#define STATIC_SHIFT 38 Y* K) C+ P! L+ _0 P q
#define TCINTEN_SHIFT 20& P0 E# l. ^ ]) U6 m2 R/ W
#define ITCINTEN_SHIFT 21. M3 K( f- A6 a
#define TCCHEN_SHIFT 22- c1 ^. @" D1 t
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;6 W6 }% G8 j3 Z3 X$ l7 M. _
static volatile int irqraised2 = 0;* ]* c5 K0 G$ H5 D9 S5 g3 O
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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);, f6 u! `+ Z! e$ R6 Z/ K
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;- w* ^0 c6 L8 m' ^- F. e
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;: h" g% b$ w7 }+ d; I
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;" H& o0 P4 `7 E6 W
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;) M+ \/ A3 B# T7 L; q
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static int acnt = 512;; }& z: W& |8 j
static int bcnt = 8;
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static int ccnt = 8;7 W9 ]3 H F6 L9 Q' t* z e
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module_param(acnt, int, S_IRUGO);8 v+ ]# i8 d& O4 ~9 M
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