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本帖最后由 yyj 于 2018-1-30 11:01 编辑 7 y! c. ]. R" n3 c) }( [
- [code]EDMA sample test application
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- * edma_test.c, W* r- m. \8 x4 D, f
- *! I9 Y( ~3 T9 i1 ?- J
- * brief EDMA3 Test Application9 G7 g, o! C" P% q' ~6 `
- *
V8 i8 p/ }! Q" i, ? - * This file contains EDMA3 Test code.6 o. Q7 u/ |' [
- *6 p u' `$ Y( y( N2 r
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
0 y) L8 S! I/ p* L - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
+ t9 r* q+ W5 V. } - * TO CHANGE.' v+ ^- n5 \ t6 v
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- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/3 U2 r3 R, s" g
- *
5 S$ b, K" k5 e& h3 x - * This program is free software; you can redistribute it and/or! Y6 s9 u6 S9 j% v, h
- * modify it under the terms of the GNU General Public License as
+ [6 \* o3 w. C6 G7 v" w' q* _2 O& z6 V - * published by the Free Software Foundation version 2.
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h. B e5 \+ ~6 |* w3 u6 b - * This program is distributed "as is" WITHOUT ANY WARRANTY of any
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- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the% u4 S. a% w3 H/ Q& Q- ~2 |% l
- * GNU General Public License for more details.
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- #include <linux/module.h>
9 @+ P' a4 t# W d$ R0 s# W" i - #include <linux/init.h>
3 J7 M6 x9 G5 X6 g - #include <linux/errno.h>; l5 V0 n' ?3 Y# @( a
- #include <linux/types.h>
+ P/ V; u2 u9 b% Z" [1 A - #include <linux/interrupt.h>
! C7 g, _. G2 b ]( i/ A& y' i - #include <asm/io.h>0 a" I( b/ O4 T8 ~9 r9 D+ @6 F1 [9 g" L
- #include <linux/moduleparam.h>" c' k' {- L, A [) K, z/ S. E
- #include <linux/sysctl.h>
) b$ b# V! z* A& v, h# L - #include <linux/mm.h>
9 h7 Z- z/ f8 {( I- o4 R - #include <linux/dma-mapping.h>
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# p/ \9 \/ E r8 Z/ z( _% E+ q% m6 f- #include <mach/memory.h>$ i4 I, A5 V+ m+ W
- #include <mach/hardware.h>" D# B$ C0 q6 Y! o, c
- #include <mach/irqs.h>5 y& e; n- F2 y2 z/ e9 d5 X9 `
- #include <asm/hardware/edma.h>
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- #undef EDMA3_DEBUG# h5 l U# \- Y5 v V
- /*#define EDMA3_DEBUG*/
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- #ifdef EDMA3_DEBUG
4 E: b: G% Q/ S' `$ h! y - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)1 z' ]# C+ f0 E* e% n
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__): N9 X! X5 t+ f" _, \
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
$ z; [, |' \% I/ j9 z - #else: u$ G/ Q4 R. |
- #define DMA_PRINTK( x... )$ Q! S0 H; @! V* |
- #define DMA_FN_IN
: z3 C7 N8 a: |7 W+ H0 T- ] - #define DMA_FN_OUT, B' _- R" j1 s7 D
- #endif
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6 K3 k$ H8 H. M7 _- #define MAX_DMA_TRANSFER_IN_BYTES (32768)8 d# P, l* w7 F# c
- #define STATIC_SHIFT 3( T3 {, e( k) e5 v$ ] l4 \
- #define TCINTEN_SHIFT 20
7 t9 J0 w9 M( U/ J - #define ITCINTEN_SHIFT 21" v1 p8 l2 t |* h Z( f
- #define TCCHEN_SHIFT 223 f( j* b! u' \) y" B% ?, i& M
- #define ITCCHEN_SHIFT 23/ y: m* k2 t& }. w
4 m& _8 N0 G& s" o1 W/ i- w: i/ f- static volatile int irqraised1 = 0;
6 q1 O/ |" j6 Q* T. p7 U - static volatile int irqraised2 = 0;2 ~9 p" {$ l) T5 T1 ]7 S
! }# z7 L+ V% e, o4 L0 \- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);2 J" i& l( m' @+ h X$ Q5 k$ h
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);) m1 @6 f# o* O
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);/ r' A8 |$ H! G3 r
- }; c( Z1 N- k) {- e k/ v( Y: E- dma_addr_t dmaphyssrc1 = 0;2 O1 v% {4 _" a0 ?
- dma_addr_t dmaphyssrc2 = 0;
* K" U! v) L! [ - dma_addr_t dmaphysdest1 = 0;
( \. e" Q4 X7 O& x, {% F - dma_addr_t dmaphysdest2 = 0;5 _; Y! g, s$ w/ F
$ i7 E' B0 a" [5 U2 i- char *dmabufsrc1 = NULL;, v; v! U m0 u7 x! z: M2 `
- char *dmabufsrc2 = NULL;/ o9 V. P2 Q: C4 u1 `( F1 z
- char *dmabufdest1 = NULL;
3 R6 C, {: A7 l9 G1 ~1 w4 c - char *dmabufdest2 = NULL;2 I: \3 D2 e1 |0 Q9 l! a8 d+ o
- C, x2 o# K: B V6 S7 N7 D5 R% L- static int acnt = 512;4 ^+ @" v6 p5 I; d
- static int bcnt = 8;. K4 b* P R4 G7 @3 h9 G
- static int ccnt = 8;
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- module_param(acnt, int, S_IRUGO);
' e* ^/ p1 b9 i$ ?* g - module_param(bcnt, int, S_IRUGO);
" Q9 U2 H' N& A - 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
# t* P, q8 `6 i, oarm-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。8 s3 }7 R: ^* w# l# {4 t
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。% e2 |0 t( c8 E7 n& K
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