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% s2 h1 D0 O, t
/*
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* edma_test.c B1 Q0 J) h' {
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* brief EDMA3 Test Application" f+ r) O' F s+ k8 v: p% q& g
*
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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 BE5 s: J& `, E* a8 M$ V
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT+ u+ F" D7 A$ f2 g; g/ S
* TO CHANGE.9 J5 [& C, W1 ?
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/4 P& D& w" Q% n0 Q
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* This program is free software; you can redistribute it and/or+ e; M( M' w, m2 N( _. t2 s" U, x8 Q- z
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.+ z _; R" t- c% m6 [* b$ w3 X
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any$ F$ U* R9 Q8 r: } R7 e' T, y! 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.( n" T1 V5 j, L, V+ E" O
*/
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#include <linux/module.h>2 V% V( O1 d! s3 S2 ^4 e
#include <linux/init.h>$ Q e$ Z5 o" W5 f+ v( A- C( [% s; |
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>. I, v7 w+ B- s
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>$ a* q. T1 w4 L$ x- o9 s5 ?# x( r
#include <linux/dma-mapping.h>% l9 d# N; X2 H) R8 M
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#include <mach/memory.h>
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#include <mach/hardware.h>6 `# b _5 f ^1 l6 i
#include <mach/irqs.h>4 E0 G. g/ |+ I8 S
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG( j- K5 Z; f4 ~+ r; m. n
/*#define EDMA3_DEBUG*/7 E+ C) l7 R5 k7 f3 ?% {. r6 l8 o
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#ifdef EDMA3_DEBUG B) d* v- h0 N
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS): Y4 }9 V4 S) Q
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)" ?' V) l: _* d, t/ e
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)8 v4 L# P1 W% \1 |& V
#else& S; D( T2 @( q& \2 a: I
#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT: k4 m/ s* C4 H( B `5 ^) J
#endif' m/ Q/ e1 y9 l' N. ^
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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 204 t- { Y1 q% l7 q) b# _- |: P
#define ITCINTEN_SHIFT 21) X3 r) o+ F2 ]& ?! u) b) F% g, z4 n
#define TCCHEN_SHIFT 22( U. P6 b8 j/ b1 z
#define ITCCHEN_SHIFT 23! t1 y* L3 b6 B! e' p/ u
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;. g) a0 q* e7 b9 a
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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);+ G( [3 a: v$ M% X
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;
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dma_addr_t dmaphysdest1 = 0;4 N$ q2 }. Z' m) L- c
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;( S5 `: p/ B# m- Z% V% I
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;# ?- \/ h' W y2 S" ^
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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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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