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- w# [9 i* O1 ]4 q" W$ ?
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* edma_test.c$ k2 ^! E3 e. L. [% B
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* brief EDMA3 Test Application/ K* O) D! ?: j* N5 j& M8 d- v, X2 u
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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& R+ g) }- N4 G) |/ V
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT9 P' U* ?: i! s; G' s
* TO CHANGE.% M# c# A' {& G& B; }( g0 I
*
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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/or4 f9 N2 j% N$ x |, ~; s/ r
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.$ m5 g5 S2 G ~8 _
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any6 O7 q0 g" a" {
* kind, whether express or implied; without even the implied warranty# D! j1 X6 B5 d
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.9 v$ T2 F& @" r1 t
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#include <linux/module.h>
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#include <linux/init.h>9 m7 c% c# Z! N1 o7 [
#include <linux/errno.h>
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#include <linux/types.h>. z1 l* C% p& _" }; m
#include <linux/interrupt.h>
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#include <asm/io.h>2 V4 B$ u0 a0 F/ v. n
#include <linux/moduleparam.h>: f, z" R9 J# i& g$ H \. N
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#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_DEBUG9 O j' v+ x7 K) i2 C2 N8 d+ Z" \
/*#define EDMA3_DEBUG*/. V* `! _$ I1 \/ S- z
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#ifdef EDMA3_DEBUG* g J% x# _/ z; U
#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__)3 a* \( G: m% P
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN4 }3 d6 z g2 b7 H* f
#define DMA_FN_OUT
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#endif! E# ~. o6 F4 R
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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
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#define ITCINTEN_SHIFT 21+ t4 V# v7 [9 ~- w/ D0 u$ ]
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23$ n) ~" Q; v. m. p- O/ G$ F0 Z
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static volatile int irqraised1 = 0;# w1 @6 Y" k8 P$ O l. o
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);0 ~& h' u7 ?8 F7 M; u' x$ T, l& m: l1 a
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);5 K$ S9 T+ s# H$ W
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dma_addr_t dmaphyssrc1 = 0;6 Y @6 M2 |1 ~4 I3 G6 p1 g
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;7 G3 k2 \( _' s2 \
dma_addr_t dmaphysdest2 = 0;" S' g9 h. a' Q# \ [
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;: T3 Q9 d# z+ a% B" O7 P! X
char *dmabufdest1 = NULL;/ H9 I7 h& i9 w. ]: C3 J- }( w# X0 Y
char *dmabufdest2 = NULL;
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static int acnt = 512;- C8 B$ I# H L% J% A, ]
static int bcnt = 8;) u/ O) w! C- V C0 N6 s% n' |
static int ccnt = 8;9 d+ c& x& o7 G. t/ d. |% {- E1 J3 t
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module_param(acnt, int, S_IRUGO);) `% U& R' A, x; s: j& m
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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