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本帖最后由 yyj 于 2018-1-30 11:01 编辑
- q1 `0 v$ V+ E y) A1 y- [code]EDMA sample test application
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- * edma_test.c
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- * brief EDMA3 Test Application0 i7 H& @8 U/ |( p
- *
( G9 i5 N' \8 {9 Z/ @9 Z4 I - * This file contains EDMA3 Test code.
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0 D( ]" r# d; @6 u. i - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE4 @3 u) {, U: K
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT m6 A2 s+ U5 N9 y8 ~) ?' m/ S* ?
- * TO CHANGE.6 K6 G9 Y' n+ ^- l0 v) H
- *
3 C4 E- s3 c/ I2 U - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
# g* h0 E2 F$ u - *
' K6 K E& T1 z7 R - * This program is free software; you can redistribute it and/or0 w* t8 d( F `& [3 j
- * modify it under the terms of the GNU General Public License as& x3 S8 A* w0 [- J
- * published by the Free Software Foundation version 2.
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: U4 d* }( u/ u! s" Q8 | T - * This program is distributed "as is" WITHOUT ANY WARRANTY of any! U( S9 G1 \" Y/ e( _
- * kind, whether express or implied; without even the implied warranty
4 w1 B$ e, ^: Z( D! j - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1 m. m2 e& D% x7 h3 F/ x4 a - * GNU General Public License for more details.3 U$ r: [! ?3 x' h
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; v: C7 h6 ]7 m# O' a8 W/ }1 E- #include <linux/module.h>
# L. I% m- F# c% o* D - #include <linux/init.h>4 ^8 Z, S3 u* N& U
- #include <linux/errno.h>- g; ~9 i! Q# s, q
- #include <linux/types.h>
+ R1 L+ o, o7 m1 j2 O( N9 Y6 U, | - #include <linux/interrupt.h>
i0 \! ]$ ^: R/ P a( J! L+ w - #include <asm/io.h>
: {3 P0 e/ `/ z; t0 P# r& l( x/ u9 y7 W - #include <linux/moduleparam.h>
4 e. C' J2 N6 | - #include <linux/sysctl.h>
0 c" G3 f3 q9 h- |% G- X- \ - #include <linux/mm.h>
8 N( X5 l2 P# |$ O, D. C+ R1 w5 v - #include <linux/dma-mapping.h>
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! a5 ?% p; X1 U7 b! l- #include <mach/memory.h>( r" u. v1 q# ^2 A4 W: ?' d' K
- #include <mach/hardware.h>) w' S3 H1 H8 |9 {! a
- #include <mach/irqs.h>8 r) I& O! S/ V- O3 F
- #include <asm/hardware/edma.h>
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- #undef EDMA3_DEBUG
8 H8 J, o: z6 F# P1 L - /*#define EDMA3_DEBUG*/
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4 I% x. _1 n. y3 G; d- #ifdef EDMA3_DEBUG5 D4 Y6 o* |7 I( p
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
, p4 |! p) E2 b+ n! b- f& y - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
" U/ N3 c. W# r- N; ?2 @ - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
9 Y) {: G% x# Q" O' l - #else
8 {+ X2 e$ ]& k( r - #define DMA_PRINTK( x... )6 M. g$ S, Q5 Z- S0 J$ W
- #define DMA_FN_IN
- _. p J9 m. V+ u/ L, U9 M - #define DMA_FN_OUT
. w# u# n* W7 o) ?: n9 ` - #endif, t* ]4 T) r2 ? U8 Q
, [/ F, s' I) e3 v# L( o- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
3 C) w- S" e/ `7 U - #define STATIC_SHIFT 39 ^5 V" E% t0 J0 V0 B
- #define TCINTEN_SHIFT 20# d+ {4 R2 n* P& H
- #define ITCINTEN_SHIFT 216 o. D: w9 { P O5 R& ~ C, P
- #define TCCHEN_SHIFT 22
0 z- q+ S+ `* c0 W) k - #define ITCCHEN_SHIFT 23$ G# f- n& s: m, G5 u
- / P3 Z; M8 E1 \* e6 h5 R( ?
- static volatile int irqraised1 = 0;
: H+ a( c4 j5 w. p - static volatile int irqraised2 = 0;# U6 p5 i4 e; M$ S# f
- : f1 d Y4 ~+ i% `7 U" h. B b9 {
- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
& W; d2 Z" i1 S5 z' W) [& Q$ c - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
9 c* |' d3 k/ R6 ]+ R - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);. @* m3 S; {$ t% f* d/ x
6 y R( l$ }0 }% `: v" m4 S- dma_addr_t dmaphyssrc1 = 0;. K) m* L8 n2 w# C+ Z
- dma_addr_t dmaphyssrc2 = 0;# r6 L. w4 W7 A
- dma_addr_t dmaphysdest1 = 0;
# \3 S9 s( S+ [+ v4 ~; W - dma_addr_t dmaphysdest2 = 0;
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- char *dmabufsrc1 = NULL;1 P. W: L# b9 z( `
- char *dmabufsrc2 = NULL;
) N4 G N ~9 D/ y6 Y$ w: m, K& s - char *dmabufdest1 = NULL;1 ]' y5 n2 G, v p4 [" S9 P2 r
- char *dmabufdest2 = NULL;
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& N5 l% y) o; n: K3 m* Z' j5 \- static int acnt = 512;5 t0 T/ H: [3 O' }; _6 n
- static int bcnt = 8;
! o, \1 I6 d6 ^1 _& \ - static int ccnt = 8;; [9 l$ g' |: h, G- r
- d y+ @8 ^: {) d' H8 T- module_param(acnt, int, S_IRUGO);8 T" d2 H$ s9 j: Y4 b- s
- module_param(bcnt, int, S_IRUGO);$ w) i2 z# L7 w) E. \
- 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" |# p. E7 l- g) s H
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。
z$ P1 l7 s& n$ `! I7 U2 { 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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