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.c4 o: J) S; |3 u3 h
*
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* brief EDMA3 Test Application1 n! @$ E1 d) y9 @: b0 j
*
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* This file contains EDMA3 Test code.
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*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE. l2 o" t2 f! u8 c
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.+ {# T. b+ Q5 ?9 y/ z& S5 U7 U
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/# g. l& H$ k7 e C/ H2 c
*
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* This program is free software; you can redistribute it and/or4 A' L- k* l# y* E2 E+ X1 G
* modify it under the terms of the GNU General Public License as, L$ ]1 Y2 ?3 j
* 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 any
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* kind, whether express or implied; without even the implied warranty6 k( x* x! Y9 r x& g. X! `" c+ g
* 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>
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#include <linux/init.h>9 B) B7 W9 {/ y9 @% Q$ Y" I# b2 }
#include <linux/errno.h>5 M$ p3 h9 {: Y8 p n9 h' G
#include <linux/types.h>& z; L8 d1 x/ @& n, ]9 s* o
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>4 K8 N# i3 g6 m% Y
#include <linux/sysctl.h>3 U0 ~) d# z- \2 b' G5 t
#include <linux/mm.h>: F5 T2 ~9 L. C
#include <linux/dma-mapping.h>8 v9 C1 n f, ^1 n
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>; B, c; {3 J% y
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG5 ~4 ]& a. S5 o9 ^
/*#define EDMA3_DEBUG*/4 [$ E7 j4 O$ o( 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__)
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#else
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#define DMA_PRINTK( x... )9 f9 `1 Z9 ]) ~; t1 s X: e& \- {5 T
#define DMA_FN_IN
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#define DMA_FN_OUT# u. [$ L& v; U' c; Z
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768), z; K( ~5 y# M6 |: I
#define STATIC_SHIFT 31 t: ]1 N" B8 q* n( ]6 p
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22$ h8 h: Z) b6 m5 r, i5 g
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;) U9 V$ c' ^; ~2 S0 m5 z. c! V
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);& o8 C: e. E4 Y4 b$ H
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);; a7 r9 K9 e M! M# x- E' [
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);) W5 e/ K$ h$ O' c
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dma_addr_t dmaphyssrc1 = 0; c) k# k& e% P: l
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;. w, P2 m W: `: @8 M
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;2 \* w7 U- h; h1 e5 {% f; u
char *dmabufsrc2 = NULL;- |, n6 H/ l4 h8 x( v, s
char *dmabufdest1 = NULL; r6 _4 a% Y1 ?+ m9 V: W
char *dmabufdest2 = NULL;1 m2 d. {" I o
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static int acnt = 512;
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static int bcnt = 8;# t9 l& i. J$ T; j$ k5 t
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);, Y# g- O$ {8 @' a
module_param(bcnt, int, S_IRUGO);/ D) l7 W4 M+ L# S, A! w
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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