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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/*/ _* y* d! I6 a# r
* edma_test.c
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*" S: N1 B) ^9 p; Y7 B- F
* brief EDMA3 Test Application5 t. M* g6 R( F' H/ e
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* This file contains EDMA3 Test code.) U1 A. |; z1 u, {4 P; d# h) M
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE9 B8 x) i* I/ r* U6 S3 W$ m# L
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT& k& E, f& ~/ ?" _6 i
* TO CHANGE.# b* V$ e1 `" l# l9 l/ f; {
*$ }& }6 B3 m& n, U; I- S* b! g# f. U. U
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/, h% D ?/ z, {& d1 K' J, T' A" Y
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* This program is free software; you can redistribute it and/or6 @; A1 Z3 a, C* P' P
* modify it under the terms of the GNU General Public License as1 ?) k+ D# j( ~+ [2 w( c1 b* I
* published by the Free Software Foundation version 2.
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*: ^, a5 C } `) G- ~
* This program is distributed "as is" WITHOUT ANY WARRANTY of any j5 k0 i7 v4 K! H* x! e3 }
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the, h7 [& [9 y+ I' T
* GNU General Public License for more details.6 s9 o. D: a( B/ q$ f6 a: ]5 I
*/
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#include <linux/module.h>* R( q; G8 r5 i& |$ U
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>6 w+ c' m; A% l% D+ P
#include <linux/dma-mapping.h>3 p4 N8 Y+ H( k7 J% X, }
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#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*/# _" Y- \/ b2 A- h7 z
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#ifdef EDMA3_DEBUG3 Y6 [2 ~. [/ Q9 u* ~
#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__)/ [/ X3 e$ D7 D
#else
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#define DMA_PRINTK( x... )" _( u: g; v/ }, l/ P
#define DMA_FN_IN
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#define DMA_FN_OUT, P% ]. V* l, y
#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! Z# f/ A% G7 ~2 t
#define TCCHEN_SHIFT 22' M# u" R, H) Q. g
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;! t8 A, B5 T2 d/ G1 t% I* c& ^
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);% f% E" v9 `% i
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);" c8 W8 R/ j# L1 J0 h
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dma_addr_t dmaphyssrc1 = 0;, C3 G! I0 d) P$ A2 A
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;+ _7 C0 G/ A. l4 w" |
char *dmabufsrc2 = NULL;# s- G' p: ~& ]! ^
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;% x! L {" `: k x' k! \9 m
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static int acnt = 512;
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static int bcnt = 8;+ W( J& ^' t( r/ b8 {
static int ccnt = 8;9 [" {! B& q* Y8 O5 o
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module_param(acnt, int, S_IRUGO);* l# x3 _: [" @* u% q) R$ D
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