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( P3 p' P- P/ j- ~1 b8 a
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* edma_test.c
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*
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* brief EDMA3 Test Application" ?5 n* K$ P* Y% c7 }$ K
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* This file contains EDMA3 Test code.+ \4 ~$ G d* I+ g- ]/ r% x
*
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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.+ I) O, z9 }/ }5 c; Q9 @5 T
*
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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
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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.! y. }1 _. }, S4 J5 x/ P1 u
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any7 S- z. T. ?& j7 v
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the/ b$ ^4 W+ s) W3 x# F
* GNU General Public License for more details.$ Y4 I7 v0 O) i$ \1 r
*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>7 z# E5 @8 G5 X& a7 t8 |
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>1 V# @. t9 t& u2 } o
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>1 G2 ]0 |6 q# u$ _+ |( o
#include <linux/mm.h>+ w& D# A/ ?3 `0 z- K6 g
#include <linux/dma-mapping.h>7 t/ g I5 j% I) H. A4 z
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#include <mach/memory.h>2 M& v. y" T' F' H
#include <mach/hardware.h>/ U' ^/ e1 E' v ?
#include <mach/irqs.h>2 o; y0 c2 h% n$ W- x
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/3 k$ Z2 z& [ p. T/ G! J
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#ifdef EDMA3_DEBUG; ?( z p( Y" t$ R
#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__)( S* W3 J- M3 P) L% W
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else9 u U% N( L* X* E+ c% n0 S
#define DMA_PRINTK( x... )
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#define DMA_FN_IN+ B4 _8 }6 ~& }/ T4 @' J+ I
#define DMA_FN_OUT! a5 h$ f6 s# d4 T7 h. D2 I: o
#endif4 {1 E0 B. I4 y9 `. d
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)" J5 d6 @7 y* K8 G2 T
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 212 Q4 o4 q a5 G2 {5 ?
#define TCCHEN_SHIFT 222 R2 \8 V. X8 |% B/ V2 J- p* p. [
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;/ u9 j4 ]7 A' w, ~' m: A, U
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);
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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);& F L! A% _* U. L5 `: z* q& s# R
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dma_addr_t dmaphyssrc1 = 0;5 u6 Q9 d% w9 c( u5 H& ?* ?
dma_addr_t dmaphyssrc2 = 0;( P% p) n8 s" U0 w
dma_addr_t dmaphysdest1 = 0;0 \4 `5 h+ K. F. y) I: d. J6 G) O
dma_addr_t dmaphysdest2 = 0;. i+ f( w( u* c" ]9 c
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char *dmabufsrc1 = NULL;) b" a4 m( t# J2 ]% t" H8 D
char *dmabufsrc2 = NULL;2 I" r1 u5 }$ R! A; J$ z
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;' d+ T1 B9 d3 A7 s2 u; x
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;# t0 u9 O6 Z2 j8 w$ Q I% k4 t
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module_param(acnt, int, S_IRUGO);' r+ S. g, t1 V. D( K
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