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本帖最后由 yyj 于 2018-1-30 11:01 编辑 7 G5 x! j$ ?3 A2 q3 T4 ^9 ~
- [code]EDMA sample test application0 z; F" Y' o# M
- /*
$ X' J0 v t/ H' I/ K8 k/ V+ D - * edma_test.c
' q8 T4 A. X0 k - *
' y+ l- P. V+ f - * brief EDMA3 Test Application
/ b4 F1 V2 w% q3 A3 ?! |0 a. E - *
1 j" [( M+ u7 [/ f* m - * This file contains EDMA3 Test code.7 l8 y1 \& b$ m
- */ o' d; B- ]" F+ b
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
+ z4 U; D6 p) d# Z - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT! G* Y0 m2 r! O w* ], ]8 J- j
- * TO CHANGE.
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- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
* U0 l6 l8 ~. x8 b. I! D - *( W; n6 ~7 N" P' P; T5 w( a9 @
- * This program is free software; you can redistribute it and/or
5 d7 s( x( x) v- F2 p, `6 W - * modify it under the terms of the GNU General Public License as: i1 w0 e0 Q7 [
- * published by the Free Software Foundation version 2.7 M1 O! w7 N% F3 @
- *: g7 p: }" h ^3 W; C( y2 q6 K
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any3 y8 O$ l/ N s, q& ]
- * kind, whether express or implied; without even the implied warranty
3 B6 B" e, S2 U" p$ N7 N" Q - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
% O) w6 S2 O, C6 F. i- l: B, n# @ - * GNU General Public License for more details., x+ n6 M* V, y, T2 K
- */, ^: n( P1 o9 [+ c! u5 H7 `& ^
: K% i" j% i, z3 ?0 @6 }& o- #include <linux/module.h> ?( E) [+ J" U9 e
- #include <linux/init.h>
/ ?" W( F; k1 O - #include <linux/errno.h>0 P) m' L! T3 @+ y
- #include <linux/types.h>/ k+ f6 K( _7 B5 f0 J1 q
- #include <linux/interrupt.h>4 F. v7 t' v7 L
- #include <asm/io.h>- l8 g6 g1 |; `
- #include <linux/moduleparam.h>
& ?3 u% c# C8 x4 j+ v8 f" P - #include <linux/sysctl.h>
" S0 z, N9 K) _- F; R5 @ - #include <linux/mm.h>
1 `) E; j! t7 K! @& i- y2 q - #include <linux/dma-mapping.h>* I7 |7 G/ i/ P2 j! Y
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- #include <mach/memory.h>, H/ J. m* O9 d
- #include <mach/hardware.h># |) Z+ m& B, ?( r2 D9 o9 {
- #include <mach/irqs.h>) p W9 Z2 U- @) t3 L" c9 a
- #include <asm/hardware/edma.h>
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9 d7 {: F5 z5 R- #undef EDMA3_DEBUG
( q7 I* [9 Q5 _ - /*#define EDMA3_DEBUG*/# ?: V' ^! z( J2 N1 Q( |
- + ^! L# [, y6 K" w) i2 x+ [5 Q
- #ifdef EDMA3_DEBUG
, Y3 u! ]- o6 H/ k0 ^6 G: H - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
9 F- i$ L+ G" L: }) ^ `% T - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)- i F' m% m4 Q G6 p) O# q
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)/ D! G. x7 o/ K w# a C
- #else* i9 i4 o0 N* M% _ g4 e
- #define DMA_PRINTK( x... )
9 V1 r5 B; ` u* s# P6 D/ K9 l - #define DMA_FN_IN/ O' P. V6 b6 p9 v3 R! L+ ~
- #define DMA_FN_OUT
0 L! j) W7 X+ V* J - #endif
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- #define MAX_DMA_TRANSFER_IN_BYTES (32768)+ b+ n* w' T# e8 m
- #define STATIC_SHIFT 3
) Q, P8 n- x0 k4 g6 V9 T - #define TCINTEN_SHIFT 20- S! P5 O) N* b/ s$ @- v7 I
- #define ITCINTEN_SHIFT 21
2 o/ G% j4 U) A# e+ q - #define TCCHEN_SHIFT 22
) a% L1 n" I3 A6 T/ w& q5 n - #define ITCCHEN_SHIFT 23' `* y3 G* l9 u6 j7 O+ h
2 S1 {2 A1 F5 `% \, R0 `: y- static volatile int irqraised1 = 0;
* s& q* R: G, a" W3 U - static volatile int irqraised2 = 0;2 h# g+ f9 v* D2 X) I% d
- ; e R- T9 H$ A6 z2 V( v7 J# i
- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
9 l8 T; Q" e- g - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
1 J; S6 |! ^2 t: V& j, o* M2 [ - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);3 Q# @6 h( b( } m1 R
% y6 }" W$ u* J. U2 k- dma_addr_t dmaphyssrc1 = 0;
& Q* _9 H! T6 G( V' R - dma_addr_t dmaphyssrc2 = 0;
6 z, n# G. W7 G: R - dma_addr_t dmaphysdest1 = 0;
% P! n) {3 @/ X+ G+ R' { - dma_addr_t dmaphysdest2 = 0;
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- char *dmabufsrc1 = NULL;. y; b3 N6 j& G9 I: n! O! r
- char *dmabufsrc2 = NULL;( n9 M4 y( n/ z9 u
- char *dmabufdest1 = NULL;
# }" x8 n+ R6 r$ P& K$ n - char *dmabufdest2 = NULL;
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- static int acnt = 512;# }7 c" w8 P& A6 ^5 C& v9 O
- static int bcnt = 8;: Q+ y5 k0 O) t" V4 k4 @
- static int ccnt = 8;
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( z, t' _- ]2 k, l% o" C4 l- module_param(acnt, int, S_IRUGO);4 m# o7 W6 I* g( s+ W$ f3 j5 P# z0 O
- module_param(bcnt, int, S_IRUGO);# D8 v1 j8 }+ 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 ~$ s7 Y2 k7 Y- N+ k- a5 U
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。
0 P3 T7 p9 A2 K4 ^' u 我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。4 L0 |( ]$ g |2 P8 B" Z. Z
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