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本帖最后由 yyj 于 2018-1-30 11:01 编辑 " ~3 c3 o5 j Q; }! G
- [code]EDMA sample test application
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- * edma_test.c
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- * brief EDMA3 Test Application
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6 x" e: s7 F2 C; j - * This file contains EDMA3 Test code.8 k4 Q f' X. u) W/ Y) S, h
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- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE( x6 i/ M4 t1 ]0 I$ z
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT: ~: p# Z# k( b! b) g' I/ M- N
- * TO CHANGE.' u3 e% U. I9 e" o6 T' v
- *- f4 S# D9 ^- U: Y9 S
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/' R6 f; j8 j6 G. m; }
- *
2 ^6 {, G4 c) a3 \ - * This program is free software; you can redistribute it and/or* B( u. }2 B5 Q' o4 f" Q) {; V: }
- * modify it under the terms of the GNU General Public License as& w2 M% Y0 l' Q% h- z/ ^7 q
- * published by the Free Software Foundation version 2.
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8 O9 l$ J5 p7 R# T - * This program is distributed "as is" WITHOUT ANY WARRANTY of any+ p' I3 [7 x: S% O$ j
- * kind, whether express or implied; without even the implied warranty
w7 R0 H1 t* {5 {, V - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
0 K& F# h7 a2 H& B3 P* D# M - * GNU General Public License for more details.* y! d* e7 {6 D
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* |/ n; {+ L" A8 O; C4 `4 Y. E- #include <linux/module.h>
$ x' g) x2 L B6 C) e/ V - #include <linux/init.h># J2 Z# S/ z7 c8 E( D8 B
- #include <linux/errno.h>1 d9 m4 H1 _& y* [/ \
- #include <linux/types.h>" N+ B. W. i% A& _
- #include <linux/interrupt.h>
0 R+ k1 g- p+ G9 K - #include <asm/io.h>
0 O+ I) Y; h4 j$ b$ D6 e9 i f - #include <linux/moduleparam.h>
/ a; z3 A8 R1 t9 |9 A - #include <linux/sysctl.h>9 U+ S6 r0 h/ F2 _+ P5 c3 V/ j( X
- #include <linux/mm.h>
( \) G/ M- |$ z, y& n - #include <linux/dma-mapping.h>
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9 c6 I2 p3 c9 O( C- #include <mach/memory.h>
$ C2 I8 K3 M! r5 \! U0 R1 J - #include <mach/hardware.h>
}9 q8 T( j% { - #include <mach/irqs.h>+ J2 e& y, y) }( E2 j% R$ u' k
- #include <asm/hardware/edma.h>% P _9 u! x2 ^
, g' S; q6 i! f! [5 m- #undef EDMA3_DEBUG
* \9 t, [) H5 r0 L2 y - /*#define EDMA3_DEBUG*/
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9 w( x8 W" X+ ^$ W- #ifdef EDMA3_DEBUG
6 [2 Q: u% ?- U8 F - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
9 `- P2 D2 K- C% u; d - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
8 |, l1 V' I* b - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
2 T/ I! _; v* X- ? - #else) [5 V% V9 U* ?, u/ k9 ?
- #define DMA_PRINTK( x... )
2 L" P! O3 P& f- ]7 o) o# P+ h - #define DMA_FN_IN* y0 M( }# U% ?0 q8 a1 n
- #define DMA_FN_OUT
$ i+ w7 a7 ?1 F! n3 D - #endif
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- #define MAX_DMA_TRANSFER_IN_BYTES (32768)5 m' u w3 h" e
- #define STATIC_SHIFT 3' Y; N) h. ~4 A9 W
- #define TCINTEN_SHIFT 20/ v8 D) w3 D, n
- #define ITCINTEN_SHIFT 21
. o, T2 L* L8 z5 ^+ h2 [ - #define TCCHEN_SHIFT 22
# e" B. C" X8 [1 F% @ - #define ITCCHEN_SHIFT 23, g: h! h( i" L6 \( E& w
* r5 g {* B' o7 L' N0 k3 d- static volatile int irqraised1 = 0;; S' B" W) j6 M6 p/ v! {5 b( ^2 Z9 f
- static volatile int irqraised2 = 0;
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" T7 h& s( O( t \5 H- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue); {: [% Y+ q! _- Z9 }9 I+ D
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
) ~& d8 S0 K( d - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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. F$ R: p1 F% f& `- dma_addr_t dmaphyssrc1 = 0;
1 _5 s0 { N, M; T6 g - dma_addr_t dmaphyssrc2 = 0;$ ^% q h2 R# R# m! W
- dma_addr_t dmaphysdest1 = 0;% x" T: Q* u- w8 O, e7 P% T
- dma_addr_t dmaphysdest2 = 0;
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( V% }- z) V% D: V- char *dmabufsrc1 = NULL;6 P2 f; S7 |% \2 |2 Z
- char *dmabufsrc2 = NULL;, J+ w2 o: ]2 w) p* \
- char *dmabufdest1 = NULL;2 s' y+ i7 K+ Y q
- char *dmabufdest2 = NULL;2 t3 [# L. c9 m$ g
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- static int acnt = 512;$ k# X. R* }- {' z2 O3 q
- static int bcnt = 8;
) |! a* Y6 _. T N) p- D( P: ~- ^ - static int ccnt = 8;& o" V3 H: R, t4 k
# I8 p% b2 X) A- l- module_param(acnt, int, S_IRUGO);
# h: ~" `6 m. y$ s& s8 R' M5 c - module_param(bcnt, int, S_IRUGO);
' k! i2 o$ [* g) Q$ F6 p - 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
, d3 i9 j( [ M3 t+ A% b- l6 xarm-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。
$ @- Y2 e9 r* I6 i 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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