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本帖最后由 yyj 于 2018-1-30 11:01 编辑
, t* A+ r( C# p- [code]EDMA sample test application2 i# {* J$ ^( @7 d) t* y# Q; s7 e
- /*4 A; Y' N ^6 C U' X
- * edma_test.c
9 D) F2 n: Z, U6 \, S - *+ F0 n4 g/ E* S6 b* B3 v) U: O, A
- * brief EDMA3 Test Application/ b6 L, x" {1 K2 S0 h
- *+ ^, T1 S8 j3 x( U
- * This file contains EDMA3 Test code.. ?' ?. x1 n1 |, K0 t+ a
- *
+ Q% r( o* s& R- ^, l E: z' B - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE9 {$ Y) k0 v: @" g5 b
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT) |$ f7 J; F1 T/ P4 J5 s/ V9 Z3 V
- * TO CHANGE.
8 m% X- X( ^0 |: p8 T - *
. Z3 i! r& F/ o* Z - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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- * This program is free software; you can redistribute it and/or3 v3 G$ x3 l- r+ N% S/ ?
- * modify it under the terms of the GNU General Public License as/ E' y1 W4 {' o- P
- * published by the Free Software Foundation version 2.
. N' i- k) C- N" p9 _ - *
A7 P, b k2 t. v0 ~ - * This program is distributed "as is" WITHOUT ANY WARRANTY of any
! C I6 T( X! a - * kind, whether express or implied; without even the implied warranty
! \% I: @) x+ F& K3 ?( B. s6 h5 ~7 P - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the; U! Z- a; v: P. B; }
- * GNU General Public License for more details.
- j0 F: d5 k/ n0 O - */
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- #include <linux/module.h>
; j3 R% J: y0 a - #include <linux/init.h>) @! {5 } |/ S0 O
- #include <linux/errno.h>
* k# ] L& T$ Z4 _5 M - #include <linux/types.h>$ E' S% U/ X R5 w
- #include <linux/interrupt.h>
* g" p) q" ]3 s2 l - #include <asm/io.h>
/ J) O. Q, N2 i9 a( U - #include <linux/moduleparam.h>
! q" X$ b9 G# v/ X2 f3 ~/ m - #include <linux/sysctl.h>
( Y- _! o2 }! @# ` - #include <linux/mm.h>/ d: H3 n1 \( X) N* i" l+ q" d I
- #include <linux/dma-mapping.h>/ J g. Q' ]& e. X' h' R0 I: z8 n
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- #include <mach/memory.h>
% L! v# g4 L! N0 u+ t* @1 C - #include <mach/hardware.h>
9 Q/ |6 B1 M. v5 h - #include <mach/irqs.h>
: a4 ^ [1 H3 l9 u - #include <asm/hardware/edma.h>
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: m* G% t, [% S4 c% H# n9 U K- #undef EDMA3_DEBUG
: A( d) F0 B4 b# c! X D - /*#define EDMA3_DEBUG*/
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- #ifdef EDMA3_DEBUG% H4 T: t! v; |* W0 V8 z/ Z
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
$ @7 Z) w0 N# x0 h - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
8 X$ h. P H$ Z, m) F6 W/ q6 b - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)) L% _# H' ~4 B+ V% w7 w$ f
- #else
( ?% W) T+ ?9 v5 \( p - #define DMA_PRINTK( x... )
1 }& C0 K7 h* \+ n, [ - #define DMA_FN_IN
2 S' b# a$ w% y3 Q - #define DMA_FN_OUT
& m# K" A2 @& J" o - #endif
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' g% q+ L% i2 B3 _1 B' @; F- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
4 v+ ?; ?- j4 d, }/ p1 q - #define STATIC_SHIFT 3
. n1 e6 K- |; y* Z - #define TCINTEN_SHIFT 203 O/ F& v$ V+ l) N" @
- #define ITCINTEN_SHIFT 21' F6 {1 ?( \/ P! a4 ]
- #define TCCHEN_SHIFT 221 k! e6 L( @ B. ^% V5 m( |7 V
- #define ITCCHEN_SHIFT 23
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- static volatile int irqraised1 = 0;9 ?4 x/ B& l9 [8 e7 O
- static volatile int irqraised2 = 0;
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2 g/ ?% [ @' w9 f( H4 I/ f- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
0 z( u& U, @( X- k" T+ n% W1 D - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
' a: Q; S" x4 k) s/ z - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);. Z' x9 K" P6 \+ Q. C$ m
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- dma_addr_t dmaphyssrc1 = 0;( n; t* x5 l3 W
- dma_addr_t dmaphyssrc2 = 0;
: l) Q7 p! \% S1 ^& U& h - dma_addr_t dmaphysdest1 = 0;( C4 P; r/ q: A; _, \
- dma_addr_t dmaphysdest2 = 0;
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% S6 F H% ^" A+ K- char *dmabufsrc1 = NULL;
8 _4 M* t! A0 O6 I/ o' }( u - char *dmabufsrc2 = NULL;6 i8 b1 M. J% x, H& T
- char *dmabufdest1 = NULL;
1 f2 q% P$ O: A - char *dmabufdest2 = NULL;1 j6 y& U/ L! l
* h& L6 I7 X# Q o6 S; z4 C6 P: _9 H- static int acnt = 512;
. W |/ Q. j( |8 {! k* c/ Y6 M; D - static int bcnt = 8;2 ^9 r1 w. S2 }% T( A7 @1 E/ O' I6 q
- static int ccnt = 8;
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- module_param(acnt, int, S_IRUGO);
+ X2 z: u- k) l. k) T - module_param(bcnt, int, S_IRUGO);; l4 x0 M S0 E: t8 z
- module_param(ccnt, int, S_IRUGO);
复制代码 6 B' a9 F0 e% l e
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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& I; H, {& J) o' a
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。0 u4 A+ h1 [! L9 s
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。; D; r; J _7 N8 [4 P& L% x
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