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本帖最后由 yyj 于 2018-1-30 11:01 编辑
3 l- z) l+ W m1 a1 a- v& r) W- [code]EDMA sample test application
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- * edma_test.c
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- * brief EDMA3 Test Application
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- * This file contains EDMA3 Test code.
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+ L% Z: x/ m, w3 I( `" P2 H - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE2 a) M# Q: d$ M7 Q1 o, S
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT) p7 y* k. s. g o+ I7 ]
- * TO CHANGE.
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- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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2 p v7 ]1 u$ @: r - * This program is free software; you can redistribute it and/or2 q# g! C1 a8 c5 X7 ^
- * modify it under the terms of the GNU General Public License as
+ c( E4 ^1 o. [ - * published by the Free Software Foundation version 2.
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+ ?1 x) B9 M) ~! |" [7 M - * This program is distributed "as is" WITHOUT ANY WARRANTY of any
) S; C: f: A5 c% h9 k+ ` - * kind, whether express or implied; without even the implied warranty( I l- s d: C% A2 P
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
4 n9 g4 f* ~: j5 U2 p - * GNU General Public License for more details.
6 S3 ]3 ]; n$ o% o+ }& C* r - */
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' }- \0 O A J8 i: @- #include <linux/module.h>
: _1 ~9 E) Y+ \4 V/ m( \9 p+ K+ K - #include <linux/init.h>
0 h4 m" y8 {: x5 Y4 F, R$ x - #include <linux/errno.h>
; y- k9 v% p" y, F9 ]% V0 v# C% C9 r - #include <linux/types.h># Y. y; w0 @( G2 I
- #include <linux/interrupt.h>
+ Z- F3 V0 _7 U) D - #include <asm/io.h>2 b' N2 L$ h6 d, E, Z
- #include <linux/moduleparam.h>/ C! f: [& h" T- L1 N- g7 v( E
- #include <linux/sysctl.h>
6 X: C- Q, u, ~ - #include <linux/mm.h>
4 z; _& q0 B+ d' N. p - #include <linux/dma-mapping.h>( y4 B' A$ ]& y- W7 L$ e
) ?; y% p- s/ W- D) S- #include <mach/memory.h> ?6 V) m& `0 c) s$ s
- #include <mach/hardware.h>
* O1 u# a4 _" H - #include <mach/irqs.h>$ [$ h, w9 L! c. n9 k8 _5 W* g7 q
- #include <asm/hardware/edma.h>
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- #undef EDMA3_DEBUG8 N# B' ]: _* S, i- B8 H+ H
- /*#define EDMA3_DEBUG*/
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3 {( A- ~1 ^+ ]7 b2 x7 }- #ifdef EDMA3_DEBUG
/ D, k% a! Z) W2 G6 B3 E - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
; n4 M) U# Y3 ^6 | - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
) \) _* j( Y- E- L# F" a% B - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)# N! l, f% z% G- d
- #else
' `0 i' k* O( Q% [0 A - #define DMA_PRINTK( x... )1 ]4 ~0 }- r9 u/ S
- #define DMA_FN_IN2 I, _" ^5 ^ ~
- #define DMA_FN_OUT/ q+ N8 s! T! a! s. ^+ }4 i9 X
- #endif0 A- ?0 b) Q. `0 L( m9 |; c
* c4 z& q: h, q- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
/ n. [ o7 s$ x# _# R* q" V- b - #define STATIC_SHIFT 38 n* h4 ^" @. U* }5 n7 \
- #define TCINTEN_SHIFT 20/ V) r- a) N. p# Q
- #define ITCINTEN_SHIFT 213 H8 E% N# V4 X1 _5 |3 i
- #define TCCHEN_SHIFT 22
5 m8 Q2 y/ t( x1 R8 ?+ R. h - #define ITCCHEN_SHIFT 23- N, Q i+ c0 R7 W
- 2 S! p: }, D3 k( H. J
- static volatile int irqraised1 = 0;$ W: U0 }4 |; }* e* k
- static volatile int irqraised2 = 0;4 H" O; D [* ]- S9 J
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- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
' I5 r- M: I0 i% b: m$ x: f - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);: w8 f9 c5 t# e: {- T
- 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;
2 V) V0 ~+ D" w7 Q" W9 z# j - dma_addr_t dmaphyssrc2 = 0;
% ~" `9 |% m+ o! h3 U9 K( ~# v( k+ V - dma_addr_t dmaphysdest1 = 0;
1 A, n. l% R9 D& L; ^ - dma_addr_t dmaphysdest2 = 0;0 [4 \, \2 V! o. u" b
, A0 {. y$ F" k# z% q( w- char *dmabufsrc1 = NULL;5 @1 B( n4 p5 R z3 e
- char *dmabufsrc2 = NULL;( q; K# O. m6 h& C o
- char *dmabufdest1 = NULL;
& l3 c! N7 A. f/ @1 Q1 _/ W - char *dmabufdest2 = NULL;
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- static int acnt = 512;+ ~+ a! W' Y I
- static int bcnt = 8;; d& A6 H4 j% d* F6 R
- static int ccnt = 8;
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, c' o1 f9 k( d1 c- u3 y' \- module_param(acnt, int, S_IRUGO);
* [; }, H# N. R: j - module_param(bcnt, int, S_IRUGO);
( J& g M3 A7 n$ @! ]8 n9 g) @7 E+ U - module_param(ccnt, int, S_IRUGO);
复制代码 : R& b- Y K l; a# ], [
" j6 ~% F" D6 F/ ` I 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
5 S5 b4 d0 S7 O2 d& barm-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。' ~8 l: | Q/ D- f; c% J5 ?2 Z
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。) n# `8 ?" v7 M0 M
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