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 application8 ]& A8 A2 M1 d( t5 l; [3 s- t7 V
/*
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* edma_test.c
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* brief EDMA3 Test Application; a: O" c0 X, c' \6 `
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* This file contains EDMA3 Test code.
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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
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* TO CHANGE.- _9 x; n+ f. e: w% m
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/& O0 m5 W6 l5 q9 C- w: M
*
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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
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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 U' Q3 t, q% W8 f. V) m8 V
* kind, whether express or implied; without even the implied warranty/ m6 H" P' _1 [
* 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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#include <linux/module.h>4 b" M0 f ]- x9 ~) @
#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>/ y: I% p C7 ^6 |
#include <linux/moduleparam.h>& o% \- K( x$ }+ F$ ?
#include <linux/sysctl.h>: Q$ T4 ~" C" M M* x
#include <linux/mm.h>5 X% g! D t) b( s0 ?0 l; _
#include <linux/dma-mapping.h>: X- |: z5 F! G) Y
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#include <mach/memory.h>; T# E. K9 W3 S& Z% b v4 b5 ^( B5 q
#include <mach/hardware.h>- y+ P/ ^/ _7 u H. W/ m6 Z
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>) ?; Y# N' u& f' }, F6 g
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/# F# Y: T9 q' }+ j% L
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#ifdef EDMA3_DEBUG! J/ u0 ~& n0 V. G
#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__)2 u/ G2 i9 g8 Y* Q
#else) S% m* ^2 n8 f& ^
#define DMA_PRINTK( x... )
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#define DMA_FN_IN7 x, e5 z1 a+ `: W( d
#define DMA_FN_OUT: u% I/ U3 l1 W
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)( `- v# N5 d, e3 Y1 A
#define STATIC_SHIFT 32 q2 x6 @0 U% x) P" K% R; y( c
#define TCINTEN_SHIFT 20; u' n9 G4 M# T- v! T6 b1 s
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22% H0 e7 q" T- ?6 O$ o$ v
#define ITCCHEN_SHIFT 23- \( J, c4 E0 B4 H
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static volatile int irqraised1 = 0;, M8 I7 D0 \6 x7 B
static volatile int irqraised2 = 0;: P7 i/ C! h: c0 k: j9 j9 F$ N0 ~
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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);( v5 g' J( x' o" o. y
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);; z& l7 h! h$ E* o
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dma_addr_t dmaphyssrc1 = 0;3 D/ m6 R2 Q5 `. J0 \/ ]
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;; @7 ^% g. @; n
dma_addr_t dmaphysdest2 = 0;& n' r) ~% `% I, N
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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;9 W% z) {% P K9 n; ?% k& z
static int bcnt = 8;
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static int ccnt = 8;* J0 K. h( O2 r' g. [/ 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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