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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*
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* brief EDMA3 Test Application6 f' ]' f( ? l( ~% h- m0 u9 \. r
*
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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 BE1 L' a* P3 B5 s+ i P% b: ^' @
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.: |: d. }5 F) n% [
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/ V, }: C6 N# [1 N1 o+ ^
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* This program is free software; you can redistribute it and/or8 v1 a5 v) |+ ~: T: i
* modify it under the terms of the GNU General Public License as d1 I& r9 Z7 S5 @) Y! s
* published by the Free Software Foundation version 2.! }4 ]4 p" J/ v7 u2 H, Q* s2 {
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any; X+ g8 Q! |# c4 ~8 h S& F
* kind, whether express or implied; without even the implied warranty g5 W( F* r- n( F! q$ |! G% o
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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#include <linux/module.h>3 ?' P% u0 w9 ` m
#include <linux/init.h>' d% h' U3 o; y1 [0 C+ ?) [
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>$ \0 o4 P5 f0 G; M
#include <asm/io.h>& K5 i4 P7 }$ A w
#include <linux/moduleparam.h>' J2 ?& Z2 D8 d! e8 P5 _
#include <linux/sysctl.h>
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#include <linux/mm.h>3 K+ y+ H" B6 M
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>+ R- |% F* J+ B" G. B
#include <mach/irqs.h>( |' z* L% ~0 K9 D
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG2 m4 s: \9 t- Z: y4 M) F, Q
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG& p, o5 F3 ` `( m0 M8 T% y/ j
#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__): V6 n$ q# R0 R# h
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)9 a, q- k! T" p: K
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN" n+ ?9 |4 { v8 ?% n; g$ K/ _
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 227 c1 j- F7 p2 P* P$ t
#define ITCCHEN_SHIFT 23) o- N& U' T7 D6 e& f
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static volatile int irqraised1 = 0;1 l" _' }1 D. I* v" q: O s/ G
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);- M+ T( b6 b6 H0 V/ Z0 T' u4 f
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);# ^+ D, S/ G3 Y* V
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);" G2 Z/ y: d5 k; Z1 T! z7 t
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dma_addr_t dmaphyssrc1 = 0;* r x' y( O* U3 c; P' Q2 {
dma_addr_t dmaphyssrc2 = 0;4 c9 u4 X& o6 r' l/ D X
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;7 N) m; c& V( V, y, k
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;% ~! g7 l; I5 S
char *dmabufdest1 = NULL;$ W ?& [3 k5 {& q7 h
char *dmabufdest2 = NULL;5 i; m% z$ M) `3 t D
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static int acnt = 512;
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static int bcnt = 8;5 W- y9 V, {+ E: U! x H' }
static int ccnt = 8;. C$ h% ?4 s. u: c! J6 L
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module_param(acnt, int, S_IRUGO);" y R" U" J# c& _2 t
module_param(bcnt, int, S_IRUGO);4 T) k+ K2 Q G6 e+ ]0 ^ P0 Y5 H& U
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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