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本帖最后由 yyj 于 2018-1-30 11:01 编辑
) Y3 U* r: [; O- `- [code]EDMA sample test application- N' P! O7 X( x) {
- /*
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- *9 o+ I% z9 w& v6 o- J$ u+ W) Y
- * brief EDMA3 Test Application7 Y# s4 B$ U- w
- *7 Z6 P6 c9 U4 |0 e9 C# M# i
- * This file contains EDMA3 Test code.
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- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE& Z' ]) @6 ^) Z* f3 Z) T& I
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
& p( N# {9 K g% n - * TO CHANGE.
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- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/! M+ R4 D' q7 `" ?& P
- *5 O& F( w \9 i. G6 e$ c
- * This program is free software; you can redistribute it and/or/ h/ d) s) f2 i/ K1 b0 J; I
- * modify it under the terms of the GNU General Public License as
0 X2 S' t+ ?) w4 I6 a - * published by the Free Software Foundation version 2.
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- * This program is distributed "as is" WITHOUT ANY WARRANTY of any1 ~9 r/ i& q$ E* h1 v1 L2 f
- * kind, whether express or implied; without even the implied warranty. z5 \; Q# P0 u* z: m
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the! n( `& g/ Y9 h4 I7 m
- * GNU General Public License for more details.
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% t$ D/ g# _ o, t! s3 P- #include <linux/module.h>
7 s, i/ t+ Y" v' {+ ?) r - #include <linux/init.h>& v8 ~# m- @) |3 ~) C; Z3 w# ]# ]! C! S/ N
- #include <linux/errno.h>3 b1 r" p0 e: c! B( y) o! A
- #include <linux/types.h>
* ~8 F6 F% i, J9 `* T8 {$ u - #include <linux/interrupt.h>, `" }: C. S1 t. h7 t1 G
- #include <asm/io.h>& h3 K' M3 x5 B
- #include <linux/moduleparam.h># e$ B2 B& l- k, q* h
- #include <linux/sysctl.h>- @" b1 n; f8 Y7 m
- #include <linux/mm.h>
+ R4 N# \* e3 H/ T0 { - #include <linux/dma-mapping.h>
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- #include <mach/memory.h>
* N' p: n1 w3 s( S# p b- [ - #include <mach/hardware.h>& e$ U+ m3 p& @- d* O
- #include <mach/irqs.h>+ ?. i0 H" l+ R' j, S
- #include <asm/hardware/edma.h>
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9 N. v3 p4 D7 R6 ]- #undef EDMA3_DEBUG
- o7 [6 E* e9 ~$ g$ p - /*#define EDMA3_DEBUG*/6 {' }: d9 G. A, @9 c0 O; t8 j9 W
- ' K3 F9 E% {) |8 H* m l; E6 n+ R
- #ifdef EDMA3_DEBUG
) A/ B4 b9 b5 K& e - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
, T% w% Q" @+ p& ?$ a, M2 } - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
, r: q$ g% U/ m8 e& i1 V% d - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)( c* |, g- r* x; l& i0 b) X
- #else
. @) w- N8 R' {3 {3 u8 r - #define DMA_PRINTK( x... )
& J4 J& \1 R+ {% `; I8 Y% I( ]$ z - #define DMA_FN_IN
: k; L8 X* i+ _ - #define DMA_FN_OUT9 M' A$ Q, N$ V( p0 _: t
- #endif; a/ Z% N& p, u' v+ i. G
- ( q4 t! W$ _( v! i
- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
d9 e0 b4 `! k - #define STATIC_SHIFT 3
1 O2 }; F* g9 @% L8 ] - #define TCINTEN_SHIFT 20
' H" Z2 J% A- g7 _ - #define ITCINTEN_SHIFT 217 O& s1 K% r- e. S
- #define TCCHEN_SHIFT 22
$ ]. D- e E$ U5 S& T. q - #define ITCCHEN_SHIFT 23
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4 x7 x6 g! B: N( Z; t$ @- static volatile int irqraised1 = 0;/ A$ e/ C1 v |$ Z, l, d1 Z
- static volatile int irqraised2 = 0;" D# F! e9 e9 @
: A/ Q: [0 H2 Y2 n& c3 M+ y3 C. o- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
9 m- i1 j$ {: R) ] - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
" k" _6 C, v( M8 A1 B0 w1 ] - 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;7 E% m# o7 ?3 b
- dma_addr_t dmaphyssrc2 = 0;* V/ E( `6 |8 g( T6 e( J7 K" K
- dma_addr_t dmaphysdest1 = 0;( @# O, ^& ^* n/ I& c5 s
- dma_addr_t dmaphysdest2 = 0;5 n& f9 [9 k& ~# u
( e+ A8 _7 o% K+ [! J- M* y, [- char *dmabufsrc1 = NULL;
9 R) {3 n% H. y4 ^ - char *dmabufsrc2 = NULL;
3 p- Y5 @0 ~% S* } - char *dmabufdest1 = NULL;4 R3 A0 I& Y& a
- char *dmabufdest2 = NULL;
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; g4 r" p/ A* S/ o1 i/ A- static int acnt = 512;' E! i3 P. q6 C @. P6 i: {
- static int bcnt = 8;5 \4 O- e/ P0 {8 a A6 e, ^
- static int ccnt = 8;
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& B6 f% L/ X4 ]5 W% D: z8 e" {: E* Z* B0 H- module_param(acnt, int, S_IRUGO);( C$ j1 Z+ j6 @% s
- module_param(bcnt, int, S_IRUGO);) Q8 Q% u( F8 p6 z
- module_param(ccnt, int, S_IRUGO);
复制代码
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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
. E# u) { u8 ^& \+ e* X0 u+ [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。! q/ f. m6 j/ S, @' a6 F( h8 Z9 h/ l
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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