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" F& h8 Z3 _1 j1 k
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* edma_test.c
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*
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code., T0 ?4 D% U3 J
*
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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. Y- N! d$ Y" k4 i# y( [
* TO CHANGE.8 }# N) X5 b- d. n# I/ |
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/) t$ r. y7 T z& l* w
*
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* This program is free software; you can redistribute it and/or K- c- `0 z6 }% r1 P% H; E
* 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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*
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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% [8 M. V* K2 R" L1 Y% U
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/init.h>* v+ `9 _: _$ ?' P, q
#include <linux/errno.h>
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#include <linux/types.h>% q; k7 \1 @* _8 L* M2 I
#include <linux/interrupt.h>8 O9 S7 I/ y4 k6 [; r: x* A9 b
#include <asm/io.h>
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#include <linux/moduleparam.h>. L1 N# A9 l9 G) |, m3 U9 {
#include <linux/sysctl.h>& z" k6 _0 D6 W9 T) F
#include <linux/mm.h>
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#include <linux/dma-mapping.h>) O! ?1 j3 j1 i* S- K
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#include <mach/memory.h>9 D8 \# b: v" N" M0 u4 s/ ~
#include <mach/hardware.h>' {% I- O. o8 S! _/ }
#include <mach/irqs.h>: s; h" `6 ~5 l* y% K6 h
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG4 F2 Y& u$ z6 P/ j" i4 n
/*#define EDMA3_DEBUG*/8 R; P2 a/ h* ]! R* ?& d. K
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)5 Q. U& P8 r* b2 M# C; \
#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... )6 S, R' O& P! s0 H
#define DMA_FN_IN6 W/ B/ W) w. R8 e
#define DMA_FN_OUT
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#endif: T8 c C# C; p$ j$ p) n: x6 z
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 39 Y5 K0 C$ }1 ?3 H: V; T2 ?+ X$ W: t
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21% D; X/ }/ I H; m2 Q2 n
#define TCCHEN_SHIFT 22& Q4 y; Q( A4 W! g2 Q+ g4 |
#define ITCCHEN_SHIFT 23( \; n7 b2 U, g$ u, x+ E
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static volatile int irqraised1 = 0;' Q8 U- k2 ?# f9 k5 H5 {& r
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);2 [$ m7 \4 l% ]
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ ]; b: H$ I: e
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);( X. C; m1 n# Q! k; J9 M2 x5 F9 ]
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;2 k, V( o( u9 L9 a+ H" r
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;. f2 X: E2 g! @6 C
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char *dmabufsrc1 = NULL;5 |4 W/ M& C0 l7 Z0 O, Y
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;' E( C8 v+ p3 }1 }( L/ d
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);( c+ J6 q: V# |8 J$ R1 z
module_param(bcnt, int, S_IRUGO);% I5 F! W# d; P" F
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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