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.c/ A0 i+ Q5 }8 f1 O
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* brief EDMA3 Test Application m: ]; _% ~( u R4 J- E) r( p2 M
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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
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT: x- @9 {2 N) \
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*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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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( y% T: C" N% S5 L
* published by the Free Software Foundation version 2.) n4 N6 }- M5 ^ Q" u6 D+ h: i
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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' k( t7 |. I9 E
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the! n: A6 Y7 r, ]5 d/ ~( d% j; g
* GNU General Public License for more details.
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*/
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#include <linux/module.h>$ s) _! e7 U5 f2 X. | v3 q$ ^
#include <linux/init.h>1 |4 b. `" S6 ?7 r; x! O
#include <linux/errno.h>% `, ?% y9 s- J* L4 `- w" ~+ T
#include <linux/types.h>1 R# }1 i F$ [4 e; U3 [
#include <linux/interrupt.h>( D# P; G( r. \5 o7 t
#include <asm/io.h>- d" Z) v8 n) K7 j
#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>; I+ E; {3 u/ R; S
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#include <mach/memory.h>% E/ H' D1 [: U" k% c1 O% \9 E
#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*/& o( C5 P( M, C: c& P. ~
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#ifdef EDMA3_DEBUG4 R- X. L& S( x- Y
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)% U, n# @! Y( d! V. {
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)# j0 B7 f& t+ r$ n8 ]8 D4 R
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)& m0 m- ~+ H" D7 v4 C8 Y
#else% h) q! r! K; y! V
#define DMA_PRINTK( x... )
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#define DMA_FN_IN i% e# s1 e8 C# w: L) y
#define DMA_FN_OUT
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#endif) e, J" M! d, U. z8 x- S7 L! A
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)' ]* K" N) u+ O
#define STATIC_SHIFT 3* V$ e! h' S; f. L1 C
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22( D7 T- t- _1 m3 F# K! ], ~8 I% T1 U
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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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);
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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);/ {4 x. i# u& P: Q
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dma_addr_t dmaphyssrc1 = 0;9 o4 j* `" i; }8 x5 H" W
dma_addr_t dmaphyssrc2 = 0;* n( W4 e$ q9 \- N7 A
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;) d+ ]% k7 Z4 E5 W! t4 V: X
static int ccnt = 8;: \# f/ y4 o+ V. `9 l
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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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