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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/*" \/ J- Q4 X$ t/ B% [& l! o9 y* u4 m9 a
* edma_test.c" Q7 I0 h0 u& q# S0 ?% i9 v
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* brief EDMA3 Test Application) D% `$ X% O' W) |, d
*
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* This file contains EDMA3 Test code.! K8 l* t* M. a: M2 M( i7 e! r
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE3 H! }. k* C w! _* u
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT, s6 H1 d7 b4 {+ N) o4 u0 c1 u6 f& b
* TO CHANGE.1 }/ H, \0 Z. S+ D* z3 G
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com// ~/ M" n: t9 x9 R/ W
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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( j# z" d& Q( O
* published by the Free Software Foundation version 2.6 d7 b' K& w, t/ ^
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any% m. m$ V6 o; e- Y
* kind, whether express or implied; without even the implied warranty A6 ]. @ w6 e% t; B
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the+ e8 \# F ^( }; u% C3 l. a- j3 W6 n
* GNU General Public License for more details.% W" t# H+ c& |
*/
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#include <linux/module.h>
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#include <linux/init.h>* {7 N7 y [# t* u9 c$ e
#include <linux/errno.h>1 c/ F& J& [4 Y
#include <linux/types.h>
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#include <linux/interrupt.h>% @; q0 M4 U. b i
#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>
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#include <linux/dma-mapping.h>6 o8 h# m# {6 ]: K/ p
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#include <mach/memory.h> a+ w- Q* G% ]6 m5 G" h2 |" u1 q% L
#include <mach/hardware.h>; L7 F s- H" l7 e5 S
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG7 u" B7 L! M. k6 u; `6 ^: c
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)0 _8 |' R4 F, o- d) A
#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_IN" J3 _. o; G) V
#define DMA_FN_OUT# V) A5 L) ^/ b
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)2 d0 S9 V+ ~3 {, _. c
#define STATIC_SHIFT 3* A i, h) q( W1 k
#define TCINTEN_SHIFT 201 ` H; ^7 R6 N `. S- \% Y, Q
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22# T/ P, u" ?/ R
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;) d3 B, \* W* P; l
static volatile int irqraised2 = 0;4 k6 B4 U. T0 r2 ? t
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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);
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dma_addr_t dmaphyssrc1 = 0;" D# D K& N1 H6 D& q
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 V9 A$ d) e8 g& q4 M
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;& \$ h" c: \$ g2 ], t
char *dmabufdest2 = NULL;4 o5 j8 m1 ~# K( K! V% Y
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;; l+ w8 R6 t7 O0 x7 o$ t
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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