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| 本帖最后由 yyj 于 2018-1-30 11:01 编辑 " V3 f& w3 l- @
 # ?; }9 \+ y* o" A1 ?: Q复制代码[code]EDMA sample test application\  m  o8 K  L
/*7 e# m( C2 ~' ^! Q0 b7 G7 e
* edma_test.c; K  M+ m+ j: H( f$ q/ J
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* brief  EDMA3 Test Application. l: j( W1 E3 t7 K3 \7 I9 s( b) ^
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*   This file contains EDMA3 Test code.: y3 c3 c% u! [7 ~( v; K: T' F9 F
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*   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE' \3 k2 G$ ~) j2 l2 J6 z
*         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT- m: B" b. o1 R. t
*         TO CHANGE.9 G1 k+ f; `/ Q% B) x
*3 k% o6 R+ Z4 y1 c
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/+ u" I$ X, q+ o: Q; b3 |
*% D6 I1 F. [! @3 @8 u4 @+ i
* This program is free software; you can redistribute it and/or+ {% W* O. A3 G+ J% {0 H% e1 l
* modify it under the terms of the GNU General Public License as5 S9 P5 }4 Q/ U- U9 h; D0 v
* published by the Free Software Foundation version 2.4 x. J. }2 N9 p9 l
*7 v3 v2 y8 [% u1 b
* This program is distributed "as is" WITHOUT ANY WARRANTY of any8 a3 P" R; e4 g% {; O
* kind, whether express or implied; without even the implied warranty# f4 i# g, w- Z) |- o
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the; F8 ^+ v- _* ]& N, v
* GNU General Public License for more details.( B' v7 E, U  m, i$ ^
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#include <linux/module.h>* ?* p( i- W& U* u
#include <linux/init.h>/ ?% t1 a1 ]' K9 Z8 K: @
#include <linux/errno.h>( R- @- k% U1 c
#include <linux/types.h>- j( M& v0 S. V
#include <linux/interrupt.h>. b& b$ c5 e- X9 ^; L6 P
#include <asm/io.h>5 Q) t9 E8 ?  M8 f  V& F
#include <linux/moduleparam.h>' C+ F. I6 `- L9 Y# d5 t& E% z, V
#include <linux/sysctl.h>5 V+ @3 W, g% o/ F
#include <linux/mm.h>7 [8 B& d* e9 C7 [
#include <linux/dma-mapping.h>  s9 e/ |0 Y' @, x6 E6 m" [$ K
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#include <mach/memory.h>" W1 y, I  O- c  l8 R
#include <mach/hardware.h>* Y3 |6 k. X/ W2 ?. F  t
#include <mach/irqs.h>g- _$ i  r  A
#include <asm/hardware/edma.h>3 O: [0 y+ |- a# k- e- O& r$ ~
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#undef EDMA3_DEBUG4 A3 Z4 ?% X" a
/*#define EDMA3_DEBUG*/1 a$ O1 N/ l9 n# A2 R
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#ifdef EDMA3_DEBUG9 |: P: F3 G7 N) i0 |
#define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS). E* W9 n5 }: r$ \8 W
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)+ }+ [. E$ n! P, D2 |) x$ o
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)+ G$ W' @$ H: X8 g) ?
#else6 Z) e! s8 l8 m6 B
#define DMA_PRINTK( x... )$ E( T6 i8 \0 `. {
#define DMA_FN_IN( O  C- ]( t! d
#define DMA_FN_OUT# e, _3 B) E; K
#endif0 k+ v0 ^( [' H; x/ M& v  z
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#define MAX_DMA_TRANSFER_IN_BYTES   (32768)7 o0 f$ `' c+ g' ^0 B
#define STATIC_SHIFT                3% @: V1 H3 n3 H0 h# b& W8 m
#define TCINTEN_SHIFT               204 N: `6 l1 G9 H
#define ITCINTEN_SHIFT              21+ I& L! l6 w6 a% x6 f$ U
#define TCCHEN_SHIFT                22" I5 [+ L, j4 z' g* _1 @* s
#define ITCCHEN_SHIFT               23; g2 h3 @# i) @0 y( g3 a& ^# c% w
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static volatile int irqraised1 = 0;' i2 a: w- w% d4 H5 x, h0 {! F
static volatile int irqraised2 = 0;2 X1 j9 u% c# @
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);2 H, ~+ k- l, u9 K. {; v7 f. H
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);. I% R/ _# x) _3 Y# h/ M5 j9 X
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ u# G7 `1 O4 z4 V
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dma_addr_t dmaphyssrc1 = 0;" d$ b; h$ d  R- v' S- }. j! Q
dma_addr_t dmaphyssrc2 = 0;! ?9 _  p- ]& S9 e/ _8 s5 U
dma_addr_t dmaphysdest1 = 0;2 e# \) R# z" v* D* u5 q/ L
dma_addr_t dmaphysdest2 = 0;* V4 S/ [3 d: a' A' a$ b
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char *dmabufsrc1 = NULL;# H) ]$ h, F, Z. S
char *dmabufsrc2 = NULL;! Q: _. n8 Z" w1 @0 \
char *dmabufdest1 = NULL;8 D: {9 h  M' r5 D/ R+ R; i5 M( e# b
char *dmabufdest2 = NULL;# D2 F/ J" Y+ c/ u
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static int acnt = 512;7 l, B3 t- g* o
static int bcnt = 8;6 A$ c- ?+ U) A; V3 e4 q2 [
static int ccnt = 8;: \  F" W# r" D7 r, F0 c, L
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module_param(acnt, int, S_IRUGO);- e+ c; `$ u- a% v* E% F$ Q0 d
module_param(bcnt, int, S_IRUGO);6 A! e3 E3 r$ V
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: P! D- ~1 T- Z/ q
 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。) }& G! F+ @8 ?% Q5 Q3 k+ B; p  a% k
 我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。# H5 A1 G6 H6 b9 ~+ _+ U0 m, `
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