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本帖最后由 yyj 于 2018-1-30 11:01 编辑
: i; L5 G, A, T- [code]EDMA sample test application
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- * edma_test.c+ w! }0 ]8 Z) j* ~+ s
- *3 D5 p5 I5 V; G* x& Y2 e
- * brief EDMA3 Test Application) J \6 F/ J# ?, N
- *
4 r) T5 {+ D3 J: e - * This file contains EDMA3 Test code.! @% j2 w9 B# P: T; h1 R2 M' v7 u
- *$ e3 t u/ C, V/ O4 R3 y
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
( d- I8 v+ |+ i+ X* ` - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT$ ^. j. I0 W e* b& g* v
- * TO CHANGE.
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- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/% H+ O5 W+ m8 Q5 x( m R& Y
- *; I N4 U& |( Q& [3 @
- * This program is free software; you can redistribute it and/or r p& z. E1 ?8 d
- * modify it under the terms of the GNU General Public License as3 ^% [( p3 j. l% W
- * published by the Free Software Foundation version 2." K3 @) l, T% h
- * d8 e# i7 ~% M/ N) G0 e
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
- ~4 I, e! X7 d" u5 e( V - * kind, whether express or implied; without even the implied warranty
7 M$ v% u, u3 ?6 h - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the2 P6 o2 X) D( _
- * GNU General Public License for more details.
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- #include <linux/module.h>8 U2 a3 B$ T4 @" t3 j# E
- #include <linux/init.h>
5 p9 a. _8 \9 s - #include <linux/errno.h>. l9 f# R/ f& k- B+ `) e" S
- #include <linux/types.h>' I3 o9 @/ q2 j2 X, Q- ?
- #include <linux/interrupt.h>( ~9 x$ x- f% Q. _; s# ^9 S
- #include <asm/io.h>. G0 d$ P4 F6 M6 h
- #include <linux/moduleparam.h>
" `+ r2 [6 P4 X' q4 V - #include <linux/sysctl.h>
6 x- N0 G2 p v, ]6 k/ B3 L - #include <linux/mm.h>" h+ ?. s9 M% y/ \
- #include <linux/dma-mapping.h>
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( @' d4 g& H5 k4 W) L$ a* j- #include <mach/memory.h>
: ?0 h! w* P; X6 R) F) s - #include <mach/hardware.h>
* Q. _. c: @1 [# M9 `4 \+ Y - #include <mach/irqs.h>
* c7 ~& v( y1 d1 A5 k# N - #include <asm/hardware/edma.h>
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2 T- O1 O) [6 `; H( G- #undef EDMA3_DEBUG
/ V, C* [1 f. J - /*#define EDMA3_DEBUG*/2 O5 M$ n4 i' g% F! b! C1 Q' p
) O, ^5 f8 d9 c- #ifdef EDMA3_DEBUG
3 m, z# M, N& |5 ? I - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)) \0 P8 p! K$ `9 Z6 O+ s c) N
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
4 \# t: {& X) F4 F' I9 R - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)' T- I& h- ]7 `+ b* e1 p
- #else3 c- R+ u1 o8 p
- #define DMA_PRINTK( x... )
" y. C% ?( q% ? - #define DMA_FN_IN2 ~! q7 _3 |: S+ B: Z% p- ?$ E. f
- #define DMA_FN_OUT8 L7 j4 ^4 D% c+ A9 z
- #endif1 D& L$ N4 k6 o! `5 f; Q- ^
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- #define MAX_DMA_TRANSFER_IN_BYTES (32768)2 v) v6 d" l; ]. r' d
- #define STATIC_SHIFT 3( ^( K2 W6 B Z# R
- #define TCINTEN_SHIFT 20' N2 ~" S b" ]7 D/ o* h
- #define ITCINTEN_SHIFT 21
) q- [. ^0 N# h+ T# y9 o$ o q - #define TCCHEN_SHIFT 229 c; N8 `' S, r: {( q
- #define ITCCHEN_SHIFT 23
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0 V$ E d ]. r7 l7 |$ I8 s- static volatile int irqraised1 = 0;/ }+ i/ k: \1 ?
- static volatile int irqraised2 = 0;
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- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);9 |- a/ v1 R6 ~
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
% Z9 v6 M% j( g% c' F - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ u. i) d: n# r. N: M' c
- + v% S0 Q( O8 ]9 U8 P2 \
- dma_addr_t dmaphyssrc1 = 0;
7 w/ M3 E% Z& ?( B" D - dma_addr_t dmaphyssrc2 = 0;' a. r6 f% R7 ^5 P' K9 P6 s9 o
- dma_addr_t dmaphysdest1 = 0;
4 f8 p; {- q' m: [ P; F7 n) H - dma_addr_t dmaphysdest2 = 0;9 v1 R9 z; p7 [: o8 r) s9 e
4 X: E- V. `7 a3 B- n- char *dmabufsrc1 = NULL;
) J+ H' ~( i4 k4 B% C - char *dmabufsrc2 = NULL;
' {# t) `- l7 p5 k/ q - char *dmabufdest1 = NULL;
4 S( M: Q; k* s. o* [& {6 W2 t - char *dmabufdest2 = NULL;2 Y0 {! c; s6 N. B) f3 S+ k; X! U
6 G! w1 A7 ^+ r# G5 u- static int acnt = 512;7 O, o" F2 u' u; m7 ^
- static int bcnt = 8;4 V. n( A! H ~6 l" D
- static int ccnt = 8;- g e g* |0 x2 r1 N. F9 k
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- module_param(acnt, int, S_IRUGO);/ X4 }% n; }+ N/ ^2 q
- module_param(bcnt, int, S_IRUGO);
" H( X0 a9 W' [7 f; @. P- s, X6 k - module_param(ccnt, int, S_IRUGO);
复制代码
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3 M7 D n d, O" 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
9 s p& L% D' p+ ~( L/ Jarm-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。5 p- W3 {3 J) z A) j/ C+ b
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。3 P* S% a, T% V1 ^( V$ t7 r
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