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 application7 Z6 h3 E; ?! U( M+ h, b
/*% r+ A, c3 c( n& W d c( y
* edma_test.c4 ^5 L) s; S# [* b1 f
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* brief EDMA3 Test Application
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*
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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
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* TO CHANGE.
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or8 d, {6 p6 M" F& K9 f: L
* modify it under the terms of the GNU General Public License as' H- \+ N4 x/ U0 @! f; }, j6 @0 o
* published by the Free Software Foundation version 2.
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*9 \( o& {4 T! g/ @0 i) o# p
* This program is distributed "as is" WITHOUT ANY WARRANTY of any: Y. R0 z- o$ |: \) {
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.% L( Z! [" }% `" O
*/
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#include <linux/module.h>+ P) U; s) K, f) }
#include <linux/init.h>( r4 F1 v% a+ D+ Q2 T7 W
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>: o- d4 W# v: H# ^8 B
#include <asm/io.h>) p9 }' r- d+ C4 A$ a: p) w! q! z
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>& d/ s0 q* p$ c L4 e* O
#include <linux/mm.h>
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#include <linux/dma-mapping.h>4 j, \6 y0 l& @4 J5 |
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>. Q% B$ j. A. H8 e/ N8 r
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG0 W' v& L) M; p! e; }
/*#define EDMA3_DEBUG*// x! R! Q6 A+ x; T, _
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#ifdef EDMA3_DEBUG7 [& V, D& s; A; {2 {4 `2 P
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)# g% O! E# A" Z1 I! @% E! n
#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... )1 Z8 {1 d8 [( V) `* Q7 K
#define DMA_FN_IN4 n' K) T/ G+ z4 G5 J& ^6 c# L* w
#define DMA_FN_OUT
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#endif4 N" o* ~0 f# }8 r$ x. T; ^" ~
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20* x& f# C- H# S
#define ITCINTEN_SHIFT 216 } C) E& d4 y+ A1 O7 k/ z
#define TCCHEN_SHIFT 225 i) l; q1 a/ a3 w7 _5 l) h$ A
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0; ? A, B6 L" U% c
static volatile int irqraised2 = 0;, z$ f& v7 k! D* M9 W
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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);* P2 }/ g9 k8 c# h; D* U
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);2 U: A8 I1 u4 U$ q
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;: k: _, W2 o& D, R8 c
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;0 C+ k0 o' L# X$ l$ ~& U
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;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);: B2 E8 x0 n- m, ^ Y: q
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