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本帖最后由 yyj 于 2018-1-30 11:01 编辑 7 j* ]0 J6 b( |# y. R R
- [code]EDMA sample test application1 m" Y' d% t1 T/ \ Q6 J
- /*4 `7 G5 b( n5 M2 Z! Q3 I6 t/ h: s
- * edma_test.c
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* e2 F; X O9 g1 V - * brief EDMA3 Test Application6 P- v9 H& Y! t, K4 ]. l
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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 BE: r9 S$ X6 a+ p( l$ Q* C2 O
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
7 {/ T) ~8 b$ E+ L. U( b - * TO CHANGE.
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- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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{! c4 C9 Z8 R7 L v - * This program is free software; you can redistribute it and/or' M& F; ~. e3 j6 K/ q/ D6 x
- * modify it under the terms of the GNU General Public License as
! ~3 @7 p( G6 E0 r7 Z+ v3 w$ S2 Y/ S - * published by the Free Software Foundation version 2.5 S6 |$ N/ U$ a9 ^. J
- *
/ Q: G$ T+ i H9 h* ~, l* ] - * This program is distributed "as is" WITHOUT ANY WARRANTY of any0 A9 J3 X0 g' U4 M
- * kind, whether express or implied; without even the implied warranty
/ ^) x$ n+ ^2 m x4 e* f - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the! V' w. @ Z7 g
- * GNU General Public License for more details.' ^8 }6 I' y9 M1 e( ~
- */
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- #include <linux/module.h>
( S x! c5 `8 Y. |9 z/ _+ { - #include <linux/init.h>" ^$ r! `- S. A F
- #include <linux/errno.h>; j( ~" Q1 c" m% E, B
- #include <linux/types.h>1 W: z& }( R7 V; L
- #include <linux/interrupt.h>' N4 {- @$ q: O& d# S2 G
- #include <asm/io.h># ?2 X: }) l/ X; V' V
- #include <linux/moduleparam.h>* P; Z% \+ o7 K. n
- #include <linux/sysctl.h>
9 L6 f: o5 M! k! ]. i/ X4 O: M - #include <linux/mm.h>/ k% p( T3 T7 e5 F0 e0 q* S
- #include <linux/dma-mapping.h>7 }4 P9 B7 E: `1 c" { U g! ~( q
' D( K' w. }- _% K, [5 I$ Q% A$ h9 C- #include <mach/memory.h>' B W/ |, m) Y, a5 P1 S: x
- #include <mach/hardware.h>
0 p' C, D* s9 V8 w3 b2 ]( a8 l - #include <mach/irqs.h>
* j6 { r$ r z+ h) G. c - #include <asm/hardware/edma.h>
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- #undef EDMA3_DEBUG
5 C4 E3 o0 I+ Z, i - /*#define EDMA3_DEBUG*/& }) o8 l8 j n" A ]
6 Q+ d& ^% B' T, `/ L1 Q4 k- #ifdef EDMA3_DEBUG
% d% r; V, \% W5 b7 l* Z. W) {9 I - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
( G" e( N8 u5 {* @1 _: b1 V - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)5 Z/ k, Y3 _/ ^
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)+ t+ a, Z U$ R9 {! \: A
- #else0 V4 \. t. v$ }
- #define DMA_PRINTK( x... )
& _) {3 |8 |% d' ~7 w2 f - #define DMA_FN_IN7 L2 h. w1 c7 `
- #define DMA_FN_OUT9 D2 ]2 r7 M+ T4 t7 `3 X$ r0 A
- #endif
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- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
% i' I ^4 f% W0 }2 _ - #define STATIC_SHIFT 3; ~. w5 w* |( D6 h6 S- _4 A4 a
- #define TCINTEN_SHIFT 20
n8 Q' \" y& k - #define ITCINTEN_SHIFT 21
6 r3 a- x0 O6 |" r/ T7 {6 V - #define TCCHEN_SHIFT 224 s% _8 S# ] V3 {. A% v
- #define ITCCHEN_SHIFT 23- d8 d- ?2 Y/ Z! l, j3 t$ N8 v
8 M9 \ E9 \2 s! i) k- static volatile int irqraised1 = 0;& S9 b- M# a1 \5 w% E+ } M$ T
- 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);
8 q! A4 W5 u$ }! n - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);. L$ T2 U d5 n8 n
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);) Q% F* R: ?9 r9 W9 ?& e
( W, R1 x5 x! H4 z8 ^! s+ Q+ l- dma_addr_t dmaphyssrc1 = 0;8 e8 w% Z( c, a2 G; z
- dma_addr_t dmaphyssrc2 = 0;, A0 P$ K$ a' H) F
- dma_addr_t dmaphysdest1 = 0;* b% T( S; ]+ u& F' X) i
- dma_addr_t dmaphysdest2 = 0;7 F y$ E0 e$ j* c: V
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- char *dmabufsrc1 = NULL;
0 m D& e! L+ o/ B - char *dmabufsrc2 = NULL;
7 q1 S' T2 q; K8 q8 f - char *dmabufdest1 = NULL;
T- U; c* T0 N - char *dmabufdest2 = NULL;. g2 }& g% _. k7 O& u! R
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- static int acnt = 512;3 ?( W/ I9 m" e3 G$ E5 j+ k
- static int bcnt = 8;6 u+ N$ H: ]; o2 f' ], Z5 ?
- static int ccnt = 8;
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- module_param(acnt, int, S_IRUGO);3 f) R3 G3 ~' R4 w: e9 C* M
- module_param(bcnt, int, S_IRUGO);
4 A+ h1 a) a- o) C# t. N& f - 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
4 B1 `# x: T$ v! ]( X+ Karm-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。. r, ^/ z4 M$ {$ |* ]+ d8 I9 p a
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。& [; R/ a- z& q K( E
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