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本帖最后由 yyj 于 2018-1-30 11:01 编辑
) E/ ^! I( e5 ?% ~1 m- [code]EDMA sample test application/ I0 ~. ~' L) ~: ~8 ?* H, A" \
- /*. c& F$ c' p) r m; y. h
- * edma_test.c' i" O1 r) |" h
- *+ T/ `, r; m8 n# s H
- * brief EDMA3 Test Application
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- * This file contains EDMA3 Test code.4 T6 K f) d- Y5 S
- *
- c: a" r% r) m+ T/ [ - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE# P5 l s: H: T' z9 `, t
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT7 t' b, n3 X" y2 C2 h
- * TO CHANGE.5 j* ?/ P' s9 t. V
- *
% P* ^5 K- R5 s% B( h3 b/ b% z - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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- * This program is free software; you can redistribute it and/or5 u& T2 r* _! p& C( \' ?/ y% N
- * modify it under the terms of the GNU General Public License as# u& z7 H# o( T$ _% e4 V; C2 P
- * published by the Free Software Foundation version 2.
V% { M$ h. u0 E* ^3 I m - *
, j! \8 y, Y b3 b0 H" B$ l - * This program is distributed "as is" WITHOUT ANY WARRANTY of any& ~( B. _9 g: d! Y; u% F* V* j
- * kind, whether express or implied; without even the implied warranty" q3 `8 m1 T6 a' j0 s' J
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the- W+ j1 F, \: q7 D" W( G6 l
- * GNU General Public License for more details.
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- #include <linux/module.h>. ^8 h/ D4 S( p6 m
- #include <linux/init.h>4 Q# z* g; N `5 f' N7 d
- #include <linux/errno.h>
9 [8 ?3 X4 ?# y9 v. i. a - #include <linux/types.h>
! _7 _4 B+ Z/ S5 k7 m) ^ - #include <linux/interrupt.h>5 |+ L+ q: ^) _3 o
- #include <asm/io.h> L1 M/ _1 g# r0 u
- #include <linux/moduleparam.h>( [8 T; J# ~: z. {% N. z: K
- #include <linux/sysctl.h>( I) {4 ?2 O; r
- #include <linux/mm.h>+ O. I9 l) y0 l# c. r M; R
- #include <linux/dma-mapping.h>- P9 K; k a3 F
& L5 d9 u% w* v" f A- #include <mach/memory.h># t% ^1 O+ G; |2 R: Z( \
- #include <mach/hardware.h>
+ y: t% {+ R- x9 `: K8 b0 R - #include <mach/irqs.h>
% D# u2 G- C0 j e8 j+ ^; e - #include <asm/hardware/edma.h>+ Z8 L; i: v4 s
$ {2 T( w' [( L5 S9 `4 \5 \- #undef EDMA3_DEBUG6 \; V1 p& \8 V9 k! c- U' i
- /*#define EDMA3_DEBUG*/
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- #ifdef EDMA3_DEBUG
& U6 x( b/ |) e7 z; R - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)6 D2 X h5 _* M, d/ }
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
- q' S" a* Q- m: v4 `4 R. Q - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)" v( G* r+ f# B) X3 z. ]. S8 _' `
- #else
9 }8 I$ m W5 n* x3 O) e - #define DMA_PRINTK( x... ). z3 ?' P" |- @- j8 @
- #define DMA_FN_IN9 ~, f1 t$ t; C, `* n5 v
- #define DMA_FN_OUT! m& Y; g. d# X6 L" D3 v% B+ O! W
- #endif B! A' m9 d: k* m1 ?6 I( n* f! z
- - G0 _1 h1 Z* W: r9 s8 T
- #define MAX_DMA_TRANSFER_IN_BYTES (32768); O" r9 V# {- ?
- #define STATIC_SHIFT 3
/ ]3 o7 e. k) a- [8 E - #define TCINTEN_SHIFT 20) V2 @. j) e+ A$ x. p# ` U
- #define ITCINTEN_SHIFT 21
2 Z* a: t! c8 O2 M - #define TCCHEN_SHIFT 22
5 f+ A9 P# C% Z) s( t1 x7 T - #define ITCCHEN_SHIFT 23
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- static volatile int irqraised1 = 0;
Z& A; e% f, m- U+ |8 m' k - static volatile int irqraised2 = 0;
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7 ^- ^$ x, M" W+ I& C. N6 R! S- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
' }7 |0 |% i' Z& W7 ~; i7 J - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);: K o6 N5 f) l/ ^; r8 m; A
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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- dma_addr_t dmaphyssrc1 = 0;
5 t. k* R8 O' H- G$ r# l - dma_addr_t dmaphyssrc2 = 0;. A. H4 f/ V( m& j6 G
- dma_addr_t dmaphysdest1 = 0;5 _) O: _5 }5 k; `& ~: J
- dma_addr_t dmaphysdest2 = 0;
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3 v$ j1 m, ?8 L+ d2 k, ]- char *dmabufsrc1 = NULL;
- Q+ v) @& ?* Z/ E - char *dmabufsrc2 = NULL;
: `/ p) _2 p2 a" @, w. o$ M - char *dmabufdest1 = NULL;
0 a7 C4 A' F# y5 t7 Q+ ?4 n; }6 f - char *dmabufdest2 = NULL; X2 U3 P* Y5 g, w$ r+ O) t
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- static int acnt = 512;
# E6 ^; ?! u9 S7 T - static int bcnt = 8;
0 N# q! V5 l3 R7 S6 q* a - static int ccnt = 8;
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- module_param(acnt, int, S_IRUGO);
2 n, [2 C+ T, `* L v9 H* b9 T - module_param(bcnt, int, S_IRUGO);2 D% q& ?" ^" K& o
- 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0 s8 x( F* I' }2 ` ?
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。9 w+ y9 p0 c6 A; p
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。! t+ N, R; p+ }. K# p
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