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本帖最后由 yyj 于 2018-1-30 11:01 编辑 8 |/ x7 v4 {* F5 ]
- [code]EDMA sample test application- x1 _; F1 Z% C' D
- /*
6 P- X0 X p# ?5 ^3 k& ]9 q - * edma_test.c
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- * brief EDMA3 Test Application6 M6 `6 R/ M3 U! D; {
- *
6 z# ?0 }) U1 f& a6 l0 X' u8 Q - * This file contains EDMA3 Test code.6 Y9 |- \( |& s" e
- */ y; y8 Z5 _& T# f* L5 i
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
' C( |1 e$ j0 ] - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT3 [% D: p& z! c& l; }! O
- * TO CHANGE.
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- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/( n, V; B% U! {& D; _9 H+ ]+ T
- *- [9 ^+ x* E5 K1 D5 F
- * This program is free software; you can redistribute it and/or1 E" @ [( O |5 @5 c
- * modify it under the terms of the GNU General Public License as
9 S/ R4 ~# r2 `3 {4 J - * published by the Free Software Foundation version 2.
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- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
8 C- }6 w9 b8 d; D7 K! n& {8 i - * kind, whether express or implied; without even the implied warranty
* l: }$ H3 {1 Y4 i - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 v' n, u' V7 f4 O - * GNU General Public License for more details.
3 X+ s, \- @; U! G% K" z - */* n i5 |/ O; _6 k# Z1 m5 q# x# o
& W3 Z* P' A! Z! F/ D- #include <linux/module.h>3 r! e7 k7 v% \) l4 K5 \
- #include <linux/init.h>
& h& } s3 @+ e1 `. c* @- N" I- z - #include <linux/errno.h>
, b. }4 u4 {+ C( h2 L - #include <linux/types.h>
9 _& y3 x" F) H# U - #include <linux/interrupt.h>+ g4 h1 Y' d, ]! ?; z$ _
- #include <asm/io.h>& E$ f( o) B& u2 G6 m/ s7 z! v+ Q
- #include <linux/moduleparam.h># Y. W" ^0 A. b$ C; G: |% V
- #include <linux/sysctl.h>
: Y" e$ S2 s" n2 | - #include <linux/mm.h>
6 `! M( k7 Z, Q0 B3 ]+ s$ v - #include <linux/dma-mapping.h>
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- #include <mach/memory.h>& H" X( l. ?+ S* x9 v
- #include <mach/hardware.h> h+ \1 _3 ^% ]1 f4 ]( x# ]4 Z
- #include <mach/irqs.h>& b( T! J3 J9 v- l& ~/ W. w
- #include <asm/hardware/edma.h>, g+ ~$ u7 I, F
, s* n) B: Y$ m% \# ?- #undef EDMA3_DEBUG6 Y; ~% S6 L) Q/ g8 Y( c3 ^& c
- /*#define EDMA3_DEBUG*/$ R- Q, r; n. } b" a0 D
9 Y4 y, D6 @- Z. i3 ]- #ifdef EDMA3_DEBUG% p. x! {5 ~/ a: l* q j
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
: B# V) b7 O& @( m& G7 g8 b7 a - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__): F1 X* Y/ o/ D, b' ]3 J" }3 N/ W
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
6 u0 _% d! G; }$ s$ {' { - #else
+ {3 U z [# o - #define DMA_PRINTK( x... )
# A G* r3 v: A4 l7 @6 ?7 W8 b7 y - #define DMA_FN_IN& |6 a2 N8 X) t W/ v1 r
- #define DMA_FN_OUT
: ?1 {; Q# k' x3 _ - #endif
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- #define MAX_DMA_TRANSFER_IN_BYTES (32768)* A( F3 B) D# o/ C4 \& J+ C
- #define STATIC_SHIFT 3/ E9 k2 e. e; [$ v: t7 V5 I- g2 e/ k
- #define TCINTEN_SHIFT 20# C( [- B; {0 q& X6 V, f5 T
- #define ITCINTEN_SHIFT 21
! f: o# d$ z9 J1 N - #define TCCHEN_SHIFT 22
6 `2 F x2 G; G - #define ITCCHEN_SHIFT 23- w8 Q4 w6 \: C0 _- }4 }6 g
% J: V+ u+ n: m) C1 @% R0 E- static volatile int irqraised1 = 0;
5 o0 J3 ]6 k7 v1 J* V V% D - 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);! T; a4 u0 ^3 [3 d- D# Y- m
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);0 C; E1 h" O( z0 r' B% _1 h& W
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);* } J1 O$ _+ A, }& e I! c; g: y
* u' k& U. m2 m) H/ B- dma_addr_t dmaphyssrc1 = 0;
0 I. d+ ~2 Z0 u; n) b4 f3 ]) ~/ J - dma_addr_t dmaphyssrc2 = 0;4 s/ G. q: I- A( ^3 O9 m) D; G
- dma_addr_t dmaphysdest1 = 0;, \3 f8 f4 b! c# h+ k
- dma_addr_t dmaphysdest2 = 0;
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- char *dmabufsrc1 = NULL;) u. U- _5 k" h& q
- char *dmabufsrc2 = NULL;
% [% ~" ?5 y7 F6 W5 v" d& Y3 m8 ? - char *dmabufdest1 = NULL;0 I0 ~- T; e" r V( y* y' ?
- char *dmabufdest2 = NULL;% ^: ]" C2 m, q
- + ^8 ~* z2 D) F5 r6 _# c9 g
- static int acnt = 512;
* j4 k) T( M e F i - static int bcnt = 8;
8 u( h, b# y. I- c: o0 C+ R - static int ccnt = 8;/ h U5 S+ o ^) U
- $ U0 y3 F% N1 p
- module_param(acnt, int, S_IRUGO);
, [* g- [4 o: J' \9 I. R - module_param(bcnt, int, S_IRUGO);$ @2 M+ M( I* X. Y: g
- 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
% S, e# b5 \) {0 p. parm-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。3 c4 P( D5 t4 U! `( w0 C0 r
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。6 Y7 ~3 h7 i+ [. [! M. V
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