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: J* Z5 `+ k& N# e1 |! W" v
/*
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* edma_test.c
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*
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* brief EDMA3 Test Application3 M" Z7 |* V& [& E( g
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* This file contains EDMA3 Test code.) n- ?4 U0 F# W) h* R
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE& s6 T+ x# ?2 K: V& z8 [
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.
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*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/, H& M% Y' b/ H: K3 i* v0 B; T7 K! y
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.; x* D& P8 f1 p
*
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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
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the* M* w ]( O0 T0 [) X- I
* GNU General Public License for more details.
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>/ l" E. |+ U5 D) _
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>) m6 a! z$ E3 J2 E1 W
#include <linux/sysctl.h>0 Y' s0 ]9 n1 b! |
#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>, @" {: I: U. y# b3 ?7 H
#include <mach/hardware.h>5 X/ s, z* H$ l3 Q T: k) ^
#include <mach/irqs.h>% l# W. x7 p% i6 d
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG' H) M9 N! d8 y
/*#define EDMA3_DEBUG*/& a. l, v+ ]1 E% W) t: P+ Y
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#ifdef EDMA3_DEBUG
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#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__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)% l1 _; k/ G; ~' T7 u" L
#else X/ p. e7 s t) H3 d* \& \
#define DMA_PRINTK( x... )
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#define DMA_FN_IN$ Y" U' i3 O5 c/ _% {, g1 e
#define DMA_FN_OUT9 t$ J3 |/ s% E. w
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)6 T& v# b( @8 v4 V6 z
#define STATIC_SHIFT 3 ]& Y' T8 m* B S
#define TCINTEN_SHIFT 20' `$ Z- W9 M- ], Q2 u4 n# W
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22. u9 N. i7 g* X& G5 |' y- I
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0; J, G2 n( f( o9 g$ @; m/ i
static volatile int irqraised2 = 0; y% f/ z* C6 U- L* L& A$ I0 R, F
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);, s: h! S, E/ ^/ n2 B* b
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);0 i+ V5 g: l( x: z) Z
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 Z2 K9 t* _, S" w! `- m3 ]
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dma_addr_t dmaphyssrc1 = 0;+ }% n) q. C- N1 g" Q
dma_addr_t dmaphyssrc2 = 0;8 P" x5 E4 B. [" M' l, z. q1 `* ?& G* I
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;1 k8 Q% n+ ?/ m- o
char *dmabufsrc2 = NULL;' a* b3 l$ U$ o' r h
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;0 Z8 F# Z( n/ H6 e" v* B
static int bcnt = 8;
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static int ccnt = 8;$ |& j2 G# x- c: |/ |+ r6 r
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module_param(acnt, int, S_IRUGO);8 b _3 c3 Y @9 t
module_param(bcnt, int, S_IRUGO);
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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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