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 application7 k, l+ ^6 @0 o$ ~# R+ m
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* edma_test.c( K3 q7 W/ D2 E# H% [ S6 \1 s/ e% O
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.' b$ ^4 \( b u% f6 k e
*
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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
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* TO CHANGE.
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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/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.9 O! E0 r. X% p' \8 x9 ^/ R+ }
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty4 B4 m, u" `2 x% P
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the5 J+ X0 X. R1 E2 n6 U
* GNU General Public License for more details./ U9 u; D# Q1 s/ |
*/
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#include <linux/module.h>+ g$ y$ `$ ^# {4 e3 \1 k. A1 _
#include <linux/init.h>1 n& N5 C7 E, k1 J: S, S
#include <linux/errno.h>
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#include <linux/types.h>0 A1 L% m, j( ~0 s; i. I- N
#include <linux/interrupt.h>
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#include <asm/io.h>+ \7 K! s& {% j$ \6 U% G+ S" i# B# K
#include <linux/moduleparam.h>! R2 |' ], ^4 ?: }" U- o, g
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>6 M& v2 u6 d: j' Y K" G
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#include <mach/memory.h>+ F- W! C. E6 ?6 s3 I, p) \ Y
#include <mach/hardware.h>/ S# t V. j" Y Z- D' o- Q
#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*/+ J: M' I5 K! G+ c P$ N% ^' F
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#ifdef EDMA3_DEBUG. B) [9 Y, K9 |! w/ K% J9 E
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)+ ^" }! c% M" p$ l, Y
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)1 o) i |6 @! j1 ?; Z# }
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__), |8 y6 y8 h! m+ x9 k7 z& H' J
#else* p' B. J! k" N; i5 {
#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT/ X/ |* {3 f" D& s# s+ |- C" i
#endif- w: L( B; w6 k5 Y+ q0 a
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#define MAX_DMA_TRANSFER_IN_BYTES (32768): Y8 N7 T. e+ x/ L. S
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20" @, s6 j+ @2 S/ X4 C0 q
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;$ m% _* w7 U y. Q4 W
static volatile int irqraised2 = 0;* t$ ~& q- p" p4 G$ n$ X7 f
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);( Q+ A: e, s# O# j3 v
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);5 R9 s y7 e. P1 E( C
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;& ~2 }' w+ Y N6 H q0 ^
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;# _7 _( f- J) I, A4 l2 [
dma_addr_t dmaphysdest2 = 0;: ?; d; z7 ?( {7 |9 w6 n. ` A
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char *dmabufsrc1 = NULL;1 \# N i7 W' l5 T% P
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;% z0 P$ v H0 A$ J7 w1 r
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);& Z" m2 l4 ?6 W; @0 ^( T+ w1 m# u
module_param(bcnt, int, S_IRUGO);& N/ W# K" b4 D; h$ i& r+ O+ ]8 Q% g
module_param(ccnt, int, S_IRUGO);

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   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