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 application
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/*
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* edma_test.c
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*6 Y3 j/ H6 a/ v. T' H- u* C8 ^
* brief EDMA3 Test Application. r; I" p/ d* p) s2 V
*
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* This file contains EDMA3 Test code.+ y2 d0 s4 [) n/ g) i) V2 ~! M; J$ U
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT) B% V( R; p$ d2 q5 H
* TO CHANGE.4 b5 Q0 J- Z7 \
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or* F) t3 |+ L, y# U% {
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.4 S% |! q5 B- ^
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty+ ]2 A+ h* ~9 q
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the: n r; L; [! ~; h2 {/ h
* GNU General Public License for more details.
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*/: @$ M4 b, E* r. t2 D; R3 p
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#include <linux/module.h>/ V, q# E r( ^9 M! S- j' n
#include <linux/init.h>) z$ b+ ?0 p. p. |. U& m) o2 {
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>: m' o, f& U" B# O! n, O0 R7 }
#include <asm/io.h>5 l' S- ?7 H3 r. w l
#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>& n/ a( b8 U5 S1 [/ _
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#include <mach/memory.h>0 k9 Z* |6 K3 m: f1 r" I( x, q; ~1 G
#include <mach/hardware.h>4 C# t5 o$ B6 b0 a& X8 p. f
#include <mach/irqs.h>" g% s" e" n- f6 s4 l
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG) P/ {9 ~# H9 B3 k
/*#define EDMA3_DEBUG*/4 k& L, b0 L! ^6 Y, V h
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#ifdef EDMA3_DEBUG* E) g& G( z9 e3 s0 ~) w/ J
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS), m9 a0 i0 Y9 K4 k( l( z
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)2 F# F( l9 t# q. u$ p+ j
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else4 H4 g4 N& D+ l- g' |' H! a: A- Q
#define DMA_PRINTK( x... )
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#define DMA_FN_IN& Z5 ]: F/ M, [1 O$ x5 H: j; W
#define DMA_FN_OUT
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#endif: r( x2 @9 f4 r0 m0 q) h$ C: H
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)# i* L( i/ V5 w$ A$ U3 d
#define STATIC_SHIFT 3, O) {! ^( l2 {) `1 N% E
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21) y$ w+ ?/ \& r# G* e
#define TCCHEN_SHIFT 22 D7 b& y: Y" K' f
#define ITCCHEN_SHIFT 234 P/ c. [) J' N& ^- \2 g
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);4 _8 |) {9 K4 I+ F" B$ J
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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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;
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dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;* @ W& t! Q! b7 X/ t
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static int acnt = 512;; S5 R. ~; \+ G* ^$ V
static int bcnt = 8;1 j H; q$ M2 Q: u
static int ccnt = 8;0 k) D8 a$ `# @0 B8 J
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module_param(acnt, int, S_IRUGO);& n9 G' f; f1 Q& o* [
module_param(bcnt, int, S_IRUGO);8 F+ \* C. `: _. t3 ~
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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