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本帖最后由 yyj 于 2018-1-30 11:01 编辑 6 G4 }3 U1 R6 K" \% b
- [code]EDMA sample test application
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8 M: T5 L7 ]: G ?3 i# f3 W - * edma_test.c
) {; [6 [- k. x" C" N! L; W - *
7 R; x+ e$ _8 e2 N- }8 x G) x - * brief EDMA3 Test Application/ i5 C* W. n( Q6 k
- *
: s: j- _: e- P) f( ~, a - * This file contains EDMA3 Test code.
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- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
( R' @, _9 N4 g2 y- o - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT: Q3 M4 O8 k8 x2 d# t! c
- * TO CHANGE.
$ _2 @. l7 h) t4 }) S - *
$ g5 Y, i2 q& D - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/( S% D/ V" C' l T6 T0 c9 b( N
- *1 g! s2 }# p; c& N6 I! E$ a
- * This program is free software; you can redistribute it and/or
; l. ` W/ I$ t; I% m8 z - * modify it under the terms of the GNU General Public License as- `8 ?+ h7 j8 S: p6 ?6 x) n
- * published by the Free Software Foundation version 2.
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- * This program is distributed "as is" WITHOUT ANY WARRANTY of any, o6 k" J2 G2 N# J$ X/ U! u9 L
- * kind, whether express or implied; without even the implied warranty
' y/ Z' @" V# e, B - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
8 _* {% T0 ?3 \* ~ - * GNU General Public License for more details.9 p" |: L$ @4 @4 V2 d+ t
- */
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" E m# {; q1 f: b6 o' n- #include <linux/module.h>+ ?- r) T0 X2 ~$ M$ u: N0 p
- #include <linux/init.h>) ]. W% G0 {$ i$ v
- #include <linux/errno.h>
& s. l7 Q" F4 V3 r* ~& c3 r: x; R - #include <linux/types.h>. ?! P* P7 Y/ H, i) \% O
- #include <linux/interrupt.h>& s7 r/ ~+ r2 v
- #include <asm/io.h>0 \. Z" Q' {2 o
- #include <linux/moduleparam.h>
* `- D4 c( x, |# v5 v, f0 C - #include <linux/sysctl.h>
+ h" _1 C- x9 D( E. a3 i* f - #include <linux/mm.h>6 `; e4 C) W9 o9 f
- #include <linux/dma-mapping.h>
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4 R `/ ]6 w' h+ T- #include <mach/memory.h>
+ C" I+ ^: b2 H: G2 n - #include <mach/hardware.h> R3 \' b& O% a2 i5 |
- #include <mach/irqs.h>8 D7 @5 _: {( i4 Y/ ^ q9 H( r. F5 {
- #include <asm/hardware/edma.h># W. ~. h6 U2 m% g' \ E
& G6 X( g' q& K9 L) ] C- #undef EDMA3_DEBUG1 G1 u! C* A( G! Q5 ` ~$ ~
- /*#define EDMA3_DEBUG*/
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- #ifdef EDMA3_DEBUG1 D7 n- A7 w$ T5 { P, v
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)( m4 _5 F5 Q4 j1 m( z* ?
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)" J G- _, A/ V4 v; x7 v. i# N
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
6 a5 H; l4 O7 _5 Q | - #else5 l W5 q6 p/ t
- #define DMA_PRINTK( x... )" H" n3 @; _6 a6 e
- #define DMA_FN_IN% o# ]' O8 V9 @( I J/ s
- #define DMA_FN_OUT
* m! q) k: @# Y8 l; v - #endif
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0 r! \% \5 }9 N* f- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
: r( E* c" d& i3 W - #define STATIC_SHIFT 3
1 {' W/ ` L, Q$ X0 b - #define TCINTEN_SHIFT 20' s( G& M4 N/ z7 w" J1 ?( Y
- #define ITCINTEN_SHIFT 21$ l R! w" G' K- k8 v# ~( ]2 Z5 Z
- #define TCCHEN_SHIFT 22) K6 S5 j) K4 L9 ` J
- #define ITCCHEN_SHIFT 23
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- static volatile int irqraised1 = 0;
! F* m5 \( o! D& D" Z% v4 k - static volatile int irqraised2 = 0;1 k! t( N8 q/ p8 Q0 |2 q
6 T" {3 k* B% `' |- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
2 |* U& ?, U* z6 B - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);* M0 k( Y+ J% g- b: |% v
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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2 n6 a( I L8 R8 v8 `- dma_addr_t dmaphyssrc1 = 0;
2 d/ K7 W3 f# W' a j - dma_addr_t dmaphyssrc2 = 0;
) w# {. F- v" V: J: N0 _: I9 D+ s - dma_addr_t dmaphysdest1 = 0;
& l: F3 n& t9 [% e. q7 l( V8 b - dma_addr_t dmaphysdest2 = 0;
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- char *dmabufsrc1 = NULL;$ T! ~2 Z3 m& [5 S
- char *dmabufsrc2 = NULL;. Z( ^& Y* d' T8 f4 Y* W$ h
- char *dmabufdest1 = NULL;
2 |: O' [. ?' m - char *dmabufdest2 = NULL;
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- static int acnt = 512;4 |; r1 g7 Y" Q: i. y
- static int bcnt = 8;0 Q8 p# j4 G4 F9 ]* G4 U; W
- static int ccnt = 8;
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- module_param(acnt, int, S_IRUGO);
& L( `! o2 R9 n( [$ C - module_param(bcnt, int, S_IRUGO);0 d; X( d; U% @7 k- s1 Y0 Z
- module_param(ccnt, int, S_IRUGO);
复制代码 ; A& _5 g4 u9 u* Z
+ { \6 } I+ e* } 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6 N$ K4 K; w7 G: g9 C2 Y; l) R
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。
& g6 u2 a* B x9 L6 D 我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。: {+ E% P i) I$ ~4 f9 J. E& H
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