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) m+ G8 P# ~2 K
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* brief EDMA3 Test Application4 ~0 D: E3 x0 P+ p' h1 Z
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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; V& B5 G/ R7 S/ |' E& h: w, I
* TO CHANGE.4 @( ? m6 V( u1 v
*- y& W( F0 ]1 u2 s( Y: v
* 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; U8 S! z1 ?) ?% [' X' m
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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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 warranty9 A7 Q- D8 ]! a" E
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the; ~7 D/ n( A% c' r* W* k0 [4 p
* GNU General Public License for more details. h" O( c) h$ N) i% S$ u
*/
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#include <linux/module.h>
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#include <linux/init.h>- h0 i. F8 C3 Z
#include <linux/errno.h>
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#include <linux/types.h>" e: n7 Q8 w9 l7 |. X; C" |
#include <linux/interrupt.h>8 e O5 q& t8 V4 R
#include <asm/io.h>+ f: h5 s! N7 ]3 ^
#include <linux/moduleparam.h>9 |6 a8 \' w- f) { N
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>2 A, l* R7 {7 d0 a, E; S
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#include <mach/memory.h>2 a+ Z6 F8 S ~# f
#include <mach/hardware.h>5 U6 Z1 a! u% O+ E4 X$ {1 h( b
#include <mach/irqs.h>5 K0 n5 `) b7 t4 @1 {% L( o; l2 V
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG b) W4 J( w8 ]1 s9 {' x6 X A# n
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG. w5 A& M5 K# L% w3 [1 g' B6 i
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)- C. z2 @0 |! A. J
#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__)& z# A3 A' _% ~* p4 @4 o
#else% f- y6 | P8 s/ V
#define DMA_PRINTK( x... )
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#define DMA_FN_IN t6 h. s: [; {1 }/ r$ ^+ ~
#define DMA_FN_OUT$ D# t0 ~2 ^5 q( s& h( k
#endif/ e! r! T" M# w3 \/ l; B+ Y
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)& v6 h! Q M* p4 O7 @: | v
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20# v) V0 N4 a4 K1 ]
#define ITCINTEN_SHIFT 21' h' N% Q1 A+ _0 L7 g( \) s4 c
#define TCCHEN_SHIFT 224 N5 U7 K# c) V1 S* w) G; t
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;( P7 s* }# I% A
static volatile int irqraised2 = 0;8 k# n' T% W% k9 E
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);: `+ K4 O* v3 {. Y* Z
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); }3 v- C0 M) x4 W; y3 H
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dma_addr_t dmaphyssrc1 = 0;- Q) I- L- }8 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;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;4 l9 ]: F2 I8 u
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;, S% E* U* y1 Y# x7 K
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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