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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/*7 G0 q+ {' H n3 U. p. `1 o/ v
* edma_test.c& o5 v* O5 m0 ^8 A4 ?& H: F- l" O
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE2 F% a1 A4 D& C" {/ \4 _9 h
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.2 J; O8 W7 Q/ G4 q% ^
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/0 T3 P0 F' z3 {" } b
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* This program is free software; you can redistribute it and/or y2 G) i: \1 @$ B U3 A
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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*
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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 warranty8 e6 u% Z1 I9 ?3 m4 E- K: ^
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the& C0 u- }1 ^, v
* GNU General Public License for more details.! l; }& N8 ^% G2 w* g* j& B
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#include <linux/module.h>
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#include <linux/init.h>/ q5 o/ P# E/ _4 s( P1 m! z
#include <linux/errno.h>
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#include <linux/types.h>; A e1 @- y5 O& `
#include <linux/interrupt.h># ~. f6 r. T. }
#include <asm/io.h>. i( E. f; l( T: D0 v% h5 }1 F
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>+ I7 z7 d2 e- g( _# ]
#include <linux/mm.h>- }- n7 T9 J: e; c8 n k
#include <linux/dma-mapping.h>- u' S6 R$ Q4 W+ k% h3 t9 D, }
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#include <mach/memory.h>
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#include <mach/hardware.h>% Q" ?3 A5 J0 h" x
#include <mach/irqs.h> U1 g, e/ f5 _. G! ]4 F' r
#include <asm/hardware/edma.h> M2 p5 y0 g: \
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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)
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#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__)
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#else4 z" L4 U: N% d: U2 L
#define DMA_PRINTK( x... ), Z! H F* p+ l* z. b' s
#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768) u* U% @$ ] l+ l" r! o% S6 Q
#define STATIC_SHIFT 3! G0 d# l9 @6 w% b _9 w2 x
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22! Z1 {% c+ t) p9 t7 I+ I& N9 X
#define ITCCHEN_SHIFT 23 [+ S" ^; d( Y4 r% T, G& F
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static volatile int irqraised1 = 0;# K1 c; ^9 O5 N
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);% \- R9 x" H$ o+ ~/ `- ]
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);- j1 i* a( l) {$ ^, ?9 m
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);7 Q [8 z0 B% f1 X/ q
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dma_addr_t dmaphyssrc1 = 0;8 e1 u2 g y0 v% ^
dma_addr_t dmaphyssrc2 = 0;# G4 Y$ p- _& m8 g. c
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;2 O6 h( x( M; b3 ^" i5 ]
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char *dmabufsrc1 = NULL;! f' c3 s6 g3 ], U9 S' t& I
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;+ _, x" ]' [4 B# V4 T+ X
char *dmabufdest2 = NULL; v" |' a% }) r1 v* y+ k
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static int acnt = 512;& B3 W, c7 J7 P( Q
static int bcnt = 8;( l3 b. ~9 ?/ o' z- }1 Y
static int ccnt = 8;$ |. N" v/ ^$ B4 I f$ A
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module_param(acnt, int, S_IRUGO);4 k! |) ^/ m; {) f0 q# k$ v
module_param(bcnt, int, S_IRUGO);; r% O# M, R$ s5 j
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