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 application5 Q- q% @" o; b M+ K$ A: d
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* edma_test.c! g; ~8 @; Z* l& p6 `; I$ Q$ ]1 y
*
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.9 Y E$ b# M% c! z/ W! \' [
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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; V" r' v5 O. g$ U% y* J. n
* TO CHANGE.4 m O3 T% h9 I/ ^" h9 l- ]) K
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/' Y( @& q# g4 L0 G0 e5 U
*
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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.( S; S1 m$ c* W4 m7 a7 c, W
*
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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( Y# @* ^# t) w0 x4 z1 u
* GNU General Public License for more details.
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*/. |* g. }: \) U% f2 \0 G) a
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#include <linux/module.h>+ O6 M* d1 x' g, l+ U
#include <linux/init.h>% ?7 E. @5 [5 N7 {; A
#include <linux/errno.h>- n& G* \1 Z; b( Z' r8 W
#include <linux/types.h>% k% z! y! V, t$ K2 `2 ~
#include <linux/interrupt.h>9 Q8 C% u2 _; f$ Q! v+ v
#include <asm/io.h>
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#include <linux/moduleparam.h>- T" g9 C& [' d% L2 p2 C" J7 e
#include <linux/sysctl.h>% {7 ~- n. b( u5 I& \ {
#include <linux/mm.h> k/ i1 ~- r7 E* g: M; v
#include <linux/dma-mapping.h>: X7 X" D4 o. L, \
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#include <mach/memory.h>
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#include <mach/hardware.h>+ r7 }% Y f/ b) r' _ e
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/% q2 G5 ]' R& J; O$ ~
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#ifdef EDMA3_DEBUG. f$ P- p' y# p7 d
#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... )
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#define DMA_FN_IN6 S& `1 o! ^0 o9 x, p6 o+ b6 k
#define DMA_FN_OUT
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#endif3 j& ?2 b* I7 K3 p4 X7 u
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3; V r/ R; o& {6 T
#define TCINTEN_SHIFT 203 Z" \9 u1 ^# Q$ E
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23/ d' K( W2 B3 p4 h: v1 D
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static volatile int irqraised1 = 0; T2 q3 ]8 M1 A
static volatile int irqraised2 = 0;' [3 K$ v$ k' G$ B( m7 B- x
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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);
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int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);( J& D/ p( _ Z3 t3 m& X9 R4 y6 M& a
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;3 [2 _% ~, b) @# Q; a
dma_addr_t dmaphysdest1 = 0;7 t; o( q6 ~' B! m4 ?0 [
dma_addr_t dmaphysdest2 = 0;8 e" g# q2 x& P! S# h: `- B
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char *dmabufsrc1 = NULL;" K5 l ?$ `. N# o
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;2 Y! ]- X. I6 P' t
char *dmabufdest2 = NULL;; g" m: o$ V# {- e* b! \& A2 s
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static int acnt = 512;
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static int bcnt = 8;1 M8 s i- i% }/ Q' d
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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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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[未解决] OMAPL138如何在Linux下使用EDMA3驱动