OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application6 X: ]" r* S+ \# e/ w
/*) k( ~8 e+ T7 y5 }
* edma_test.c
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*0 O( q1 n' v8 L6 S6 z2 h- J
* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE2 _+ Z& r( c$ d; c; W( O7 r: e! ?- t9 j, K
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT( f; a7 i! L8 H/ t7 G& M2 |+ E
* TO CHANGE.& w5 E3 i) X6 J5 p
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/2 b }( D; |0 S0 A: Y5 E) E+ y
*
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* This program is free software; you can redistribute it and/or! c }3 @5 T1 I( L
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any0 l m( X- V) L' q1 D
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the7 ^4 Y0 h& f9 [
* GNU General Public License for more details.5 _) {- }6 K: G1 e
*/
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#include <linux/module.h>; w0 F m- u9 K3 M. T
#include <linux/init.h>& f* D9 F8 r, B1 m U2 w
#include <linux/errno.h>
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#include <linux/types.h>$ N1 @$ } i# Z9 O8 p/ i: w$ {; f
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>8 S; n- B2 ]& b* {
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>3 q) \" C0 Q# ]: h3 D% @/ p8 \
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#undef EDMA3_DEBUG* t6 a7 k3 ~/ L6 G) w' Y5 {
/*#define EDMA3_DEBUG*// w! I8 X' X; |# i3 u
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#ifdef EDMA3_DEBUG3 C" x/ i0 {% u: c9 \+ C4 o2 C
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
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#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)) S- h+ c A2 A( r6 P
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)% `! O ^ z# P: d+ Z# ^ i( ~: w
#else' R5 M$ c/ i/ q7 @7 k
#define DMA_PRINTK( x... )4 M% k) Z9 g( z2 |; W+ H+ D
#define DMA_FN_IN
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#define DMA_FN_OUT2 r; X- e+ e: Y+ B3 M/ [
#endif! u. ?( F% o8 l' P' P
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3/ O- g5 D9 y3 M5 \# Z
#define TCINTEN_SHIFT 20- G6 c) E- v4 V: v$ D5 }0 |$ B5 u
#define ITCINTEN_SHIFT 21$ U* i! U% A: z! R
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;6 K8 ^0 q8 R- W$ z) h. d
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);0 q+ y, K$ L' i: g E. [
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);' Q- F N9 _* a
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;3 v8 ?2 t8 Y! s$ _1 Y
dma_addr_t dmaphysdest1 = 0;+ \% C% h% k* V8 e" l
dma_addr_t dmaphysdest2 = 0;# w% m# M1 ^- f: s, o, L5 [. O' t
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;, C+ j! U* | o4 j U: A
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;( e3 x5 u. t8 z& p( V, V$ a
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);4 ~$ a8 \* D) U' s5 v
module_param(ccnt, int, S_IRUGO);

复制代码

   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
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。
   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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[未解决] OMAPL138如何在Linux下使用EDMA3驱动