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本帖最后由 yyj 于 2018-1-30 11:01 编辑 $ |1 G$ H7 y0 O' y
- [code]EDMA sample test application0 u+ U) b7 v( `& W$ K5 l! O* |
- /*
7 \/ w7 E5 u- G# W - * edma_test.c) |8 \6 ~5 p* U0 ?
- *, C$ Q2 ^, L: A" l x+ D
- * brief EDMA3 Test Application
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5 `0 z! [8 _/ E$ ~9 w" R - * This file contains EDMA3 Test code.
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- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE& L# ]/ \; f8 [' s# \
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT& `7 N; I0 k( P. @
- * TO CHANGE.
3 g% f: N2 | H% U" r - *
7 Q0 ~, K" `& j* ?, D3 {0 p! j - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/& _; q1 x6 @ ~1 d5 w% E$ p
- *
2 j* {- |+ R1 C9 e8 J - * This program is free software; you can redistribute it and/or; ] S$ m: i! g
- * modify it under the terms of the GNU General Public License as* c3 c: e) @9 k' {' G7 X; G
- * published by the Free Software Foundation version 2.
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- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
% O3 X5 D$ B0 o; d1 q - * kind, whether express or implied; without even the implied warranty
9 e+ e4 T& ?1 m* U8 T9 I2 C - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the4 \" }+ O) ~" q: w, C" Q0 a( N
- * GNU General Public License for more details.
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: D2 N! q9 N* V' X- #include <linux/module.h>
) ~8 z- X% O- e) K+ ] - #include <linux/init.h>5 l9 m$ m+ M* Z5 p
- #include <linux/errno.h>
# ^6 q; y9 Z; n3 Y5 o - #include <linux/types.h>
4 M% p. ?# g5 B! m0 V - #include <linux/interrupt.h>2 |& f9 a% Z. B M
- #include <asm/io.h>
' S7 n' N# O3 n7 `1 t - #include <linux/moduleparam.h>
8 K6 ^5 X0 c! ]* `: j& K& \ b0 L# A& r! l - #include <linux/sysctl.h>5 q' F7 O" z( l; R/ I
- #include <linux/mm.h>
. P+ V# l% p* c - #include <linux/dma-mapping.h>
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d9 v7 e: `. ?& t( r# S6 ^- #include <mach/memory.h>7 y# Q- H( S8 O; o: V: a# X* p2 n
- #include <mach/hardware.h>- Z4 o# u1 i# p
- #include <mach/irqs.h>
, u7 D* u: J+ ~4 n8 c1 W& b - #include <asm/hardware/edma.h>
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) n& W+ X; I. M* o! K- #undef EDMA3_DEBUG8 Q% r0 K# \% Q* Y5 p/ s1 C5 D
- /*#define EDMA3_DEBUG*/4 `1 {7 K& E" G& j+ V
- 8 }' W: n" \, v3 R" y; L, ]6 n
- #ifdef EDMA3_DEBUG! m' m/ |. u9 d3 G
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
0 g0 K3 ?* Q' J, Y - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)' i# `% W# d' _ ?) ^
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)* R/ p w$ x# g% ?
- #else
8 H' W- m, R# a1 i! _2 N - #define DMA_PRINTK( x... )
5 k7 O3 t5 E# Z2 W$ n - #define DMA_FN_IN
* X! m+ ?8 p& F - #define DMA_FN_OUT, E5 D: N7 a0 ]( @- P" C" ?
- #endif% \7 o( I) [/ P
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- #define MAX_DMA_TRANSFER_IN_BYTES (32768)7 M/ i5 p! J7 E. G$ B
- #define STATIC_SHIFT 36 E! B7 f$ F( s! ?
- #define TCINTEN_SHIFT 20
. D1 j2 _9 c& J, g - #define ITCINTEN_SHIFT 21% \4 C, o H8 J7 `; d* {
- #define TCCHEN_SHIFT 22: T0 V) y0 O- s! N$ U; ^, V
- #define ITCCHEN_SHIFT 23
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- static volatile int irqraised1 = 0;
) P% N# k6 h5 l9 N - static volatile int irqraised2 = 0;* c5 ]4 ]9 M4 l! ^4 }
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- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
; _/ o& G6 @- X$ s; q3 F! P - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);7 W6 V. A1 P* b
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);" |& n3 u6 t- K6 k: [ x6 Y, T
) @" s; X+ y( a3 B- dma_addr_t dmaphyssrc1 = 0;# _. B$ |7 d, K0 z
- dma_addr_t dmaphyssrc2 = 0;
+ J( n8 H( i5 m3 ~# ] - dma_addr_t dmaphysdest1 = 0;
U: b/ u: i! I! X1 ]+ e - dma_addr_t dmaphysdest2 = 0;
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; _; o; [' Q% @* j- char *dmabufsrc1 = NULL; p6 m& C. Y1 V3 J' f. o4 Z% |
- char *dmabufsrc2 = NULL;
* S* t- a2 ?! ?, Y+ x) k - char *dmabufdest1 = NULL;' k3 I7 O T. G/ v! @% x
- char *dmabufdest2 = NULL;
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* n: M7 }. H( S- static int acnt = 512;
1 T% ^, d# A- S' ^ - static int bcnt = 8;, ?3 p& S7 d! T8 X; l
- static int ccnt = 8;
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- module_param(acnt, int, S_IRUGO);
! J6 D# q; A; f7 y2 L) A! Y - module_param(bcnt, int, S_IRUGO);
. p5 x1 u* {! O* }/ W8 F - module_param(ccnt, int, S_IRUGO);
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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' {/ A. n% L3 G" r
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。
. i7 z# f8 S5 J3 S 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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