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本帖最后由 yyj 于 2018-1-30 11:01 编辑
# ~' ^: V' w) ^( ]9 i5 Y1 ^. F9 B- [code]EDMA sample test application8 v- Z& c0 L/ m" b4 i# A
- /*4 [. }, Z- E) ]( F* j4 E: R0 f
- * edma_test.c
2 V" h1 o$ ?! o7 \1 S! d3 E - *
/ W# K+ {2 U5 u; [0 v* J) c. } - * brief EDMA3 Test Application
9 {4 B. I0 R% F4 l, T - *
2 L4 J* t: H' T- i4 Q. Q8 {6 z- p5 C - * This file contains EDMA3 Test code.. ]8 m5 q+ V6 H% T& n! o' L
- *, R8 r" p6 B6 ]- s% c! |
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE; L5 i( J( r1 \' ^& q- Y0 S
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
2 x( N. t' o3 G# @9 r# ` - * TO CHANGE.# K/ ~+ a! T9 J6 ^1 ^& n
- *
5 H2 G2 C; n+ p5 G" M: e3 x - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/" e+ h. p, x8 J5 u( d
- *
3 N9 _/ F; m6 N4 e% y! T; D, o3 [- i - * This program is free software; you can redistribute it and/or
7 J1 E$ E& a' z! G/ m+ Z' J6 k - * modify it under the terms of the GNU General Public License as( H' \; G& Q: {7 }7 J. a) s2 ]
- * published by the Free Software Foundation version 2.! |5 f- w) z- q3 ^ J
- *- o( F) I* m8 J2 E( a
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
4 r! Z3 m. ~0 ~8 o# s - * kind, whether express or implied; without even the implied warranty
5 O; d! p5 [7 w - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
, y0 _3 q9 U$ |. I& Q( | - * GNU General Public License for more details.
: U0 |8 I3 h8 @+ t3 m( c& r - */
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- #include <linux/module.h>$ b( G0 p! D8 Z7 L+ W- n
- #include <linux/init.h>
% f d/ F- d* a& }( b - #include <linux/errno.h>
. R h4 [- D5 z! L8 t* a5 @1 s - #include <linux/types.h>/ X& z# u" [5 h) h8 S! [) v' v! I
- #include <linux/interrupt.h>3 b7 ]/ e% [/ V5 h+ q' z2 m
- #include <asm/io.h>- l3 e: r% D" z$ ^) o
- #include <linux/moduleparam.h>/ V) Q% p: Y* M# E0 ~" l
- #include <linux/sysctl.h>" q9 B0 i" W1 S, _" L
- #include <linux/mm.h>! U! _4 f1 u7 |% ~; p2 U
- #include <linux/dma-mapping.h>
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* u( e( ]1 v3 K- C4 Y) a6 g- #include <mach/memory.h>
# G9 d" b# c1 l7 ^ - #include <mach/hardware.h>% n+ V6 m+ {1 I. w4 @+ w
- #include <mach/irqs.h>
4 }' D; h- N. Z8 l4 n: @ - #include <asm/hardware/edma.h>
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- #undef EDMA3_DEBUG
' [$ `7 j. B) u - /*#define EDMA3_DEBUG*/
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: o6 b6 y- P [) |- A% H5 m- #ifdef EDMA3_DEBUG' ?9 p0 v, m. k$ |9 ]
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
& v# p6 t* \( h. K f0 h Q, c - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)# V/ s( |7 F1 t/ L4 g; H
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
" z! v+ c+ F1 B$ _3 k6 k - #else
8 a* \; k; i' [, e" K - #define DMA_PRINTK( x... )4 B% P% U: e, D) Y* x- H
- #define DMA_FN_IN
/ Z6 X6 O, v2 l3 x1 b( W) g - #define DMA_FN_OUT
* ^0 O6 P& a+ z - #endif
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- #define MAX_DMA_TRANSFER_IN_BYTES (32768)8 I, o' ?# u7 T/ ?
- #define STATIC_SHIFT 3& P2 t( E2 c# s6 \
- #define TCINTEN_SHIFT 200 l w. k2 U, r) E; w9 G5 ]# G2 g
- #define ITCINTEN_SHIFT 21( {" A$ J0 e$ O7 D. G0 Y# m
- #define TCCHEN_SHIFT 220 {( o- m. R5 T$ P( N& W5 s4 c
- #define ITCCHEN_SHIFT 236 Q3 |8 ?: C+ i
- # I L. ~* r# U: ^! b
- static volatile int irqraised1 = 0;4 B! A% o. w& m' }6 r
- static volatile int irqraised2 = 0;. T( L; P) R1 ^* U1 `# y1 w$ G
4 k+ K {' V$ \2 H7 P# r( g' f9 e# U- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue); I* g! |- }1 C/ s% c. r
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue); E" |, z* E" G0 p9 \
- 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;" S' r# o6 [ N8 Q/ n! t
- dma_addr_t dmaphyssrc2 = 0; f2 d2 y& w" [
- dma_addr_t dmaphysdest1 = 0;7 I# |" `1 B& }7 {* I4 A' ?
- dma_addr_t dmaphysdest2 = 0;7 n# B0 c, |$ y3 U/ V) [! A
- 7 O3 z" B, m3 X8 X1 `4 ]0 c
- char *dmabufsrc1 = NULL;
2 _* w0 V5 _$ _ J9 O - char *dmabufsrc2 = NULL;1 b8 q3 F; }% f8 e
- char *dmabufdest1 = NULL;- m! W3 q7 f/ u# K5 q
- char *dmabufdest2 = NULL;1 B' A1 P& L/ U' o
- 6 g3 @! \/ J, p/ Z; F
- static int acnt = 512;
# e! U. i2 ^. ~. V! [: L - static int bcnt = 8;
8 C4 [# C' r9 k/ ^7 b/ m" N - static int ccnt = 8;
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9 R k# w t6 |# z/ z* H- module_param(acnt, int, S_IRUGO);+ x% ~: {( W# L* T7 F$ {
- module_param(bcnt, int, S_IRUGO);
; }- v# H+ H1 X- q - 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
2 g7 T2 ]0 M. {1 R; a! P% |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。
$ w+ c7 i( V: x( j 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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