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/ Z. f0 b8 Y& O& `- Z
/*. j9 i& P" o$ ~1 s0 k [& p
* edma_test.c
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*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.0 W5 U. u: S6 {8 ?4 k, ^' U3 q& D6 f
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE! }$ U+ V/ ~; d4 q8 Y; t
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT5 u$ {& X8 H H3 c( ]% d
* TO CHANGE.$ }. d( {8 b; l2 [' Q& I
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* 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
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* modify it under the terms of the GNU General Public License as) R5 H% r6 m9 R4 U L6 f
* published by the Free Software Foundation version 2.
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*! D d0 o! d" }5 v
* 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$ V! i ]" I( c7 E, A7 s2 ]0 |: ]
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the7 Q6 z( L: b9 i# f& v) m( [
* GNU General Public License for more details.
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*/7 V5 h6 c2 e! {* H9 g3 @ @
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#include <linux/module.h>6 d& E& y2 f) g! L8 g
#include <linux/init.h>, E+ \. b& u+ I# V1 I( p; T
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>: w/ V) v$ S. X5 s" V1 I; P' X6 B
#include <asm/io.h>
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#include <linux/moduleparam.h>$ W0 x+ x1 X! E" g* C* F5 W& h
#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>! a( j; U& U/ L) f0 g8 k
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/$ ^8 y$ I$ a9 m& Q* ^5 q" ?
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#ifdef EDMA3_DEBUG3 N8 v; j# J. N. h
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)$ J" j$ E* N7 \) d- A3 K! m$ p
#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... )$ u L/ m3 @' a. {
#define DMA_FN_IN9 F8 {# Q& H4 M# f5 V- A
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)4 I* F' ~ }* w* x6 a1 y. P# _: ?
#define STATIC_SHIFT 31 a) M3 [( x' i
#define TCINTEN_SHIFT 20% L9 |/ J# i$ W* \% v; h4 G2 L' |2 B! y! m
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22" K- H! W, M7 S) f# u( k
#define ITCCHEN_SHIFT 23 J2 `( w8 O8 ]; P9 ?' a0 [9 m; f
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static volatile int irqraised1 = 0;
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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);9 E( F ?' b6 j* Y/ B
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);
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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;
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char *dmabufsrc1 = NULL;# \1 W8 L' ^5 j8 ~. t2 M* U
char *dmabufsrc2 = NULL;2 @9 m: |0 ]* J
char *dmabufdest1 = NULL;$ u! q5 p, P: i/ J; o
char *dmabufdest2 = NULL;
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static int acnt = 512;6 l b5 V5 w$ h
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);8 Z: f5 t, t% p' E; f/ H' T
module_param(bcnt, int, S_IRUGO);) [8 o M w" b; I% ?) n
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