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
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/*
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* edma_test.c: @4 G3 M) {5 s# t5 l4 b
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* brief EDMA3 Test Application) s( O' ~5 r/ Z- ~ P
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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, z! {) K6 O& K: d g
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT# E- W( J, ^. d. |# i
* TO CHANGE.- J4 r6 H$ y% Q' |( }2 R
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/; S2 t% h& X6 u. x
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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., t& o2 Q! `) J d3 n1 P
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any |4 f* [. O3 W+ I! A
* 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., |% V; f) `- x0 t9 d/ y+ Y
*/
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#include <linux/module.h>* ]" ~2 P; L( @% T1 Q9 ]' c
#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># M& _" O+ ]: q( T4 w5 u' J6 V
#include <asm/io.h>
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#include <linux/moduleparam.h>( g' ?( C D, |
#include <linux/sysctl.h>
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#include <linux/mm.h>% [% @+ q, \) G8 q2 l" }5 n
#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_DEBUG( U1 o3 U/ Z5 ~8 h5 B1 V! ~
/*#define EDMA3_DEBUG*/- [$ B: U! o/ }+ t
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#ifdef EDMA3_DEBUG' r2 g- a) H' `' n) P* q, s3 ?7 T& X% m
#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__) V6 U9 s' R! o3 x* @$ G
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )8 r, c3 r q" ?+ r; J: Y
#define DMA_FN_IN
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#define DMA_FN_OUT& h9 K+ {. B9 D& l
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)4 C6 q) Q3 i% Q* W
#define STATIC_SHIFT 3) o- [+ |/ B- _$ r4 Q, }7 P! O
#define TCINTEN_SHIFT 209 y* y k) Y# c: q
#define ITCINTEN_SHIFT 21 T9 N) m$ ` l8 p: Z
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23' l. H3 K: o8 X! {
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;/ \3 |1 R" y/ Z; ?& r
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);% e D' K8 t2 P% x& {9 T5 p% z
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);' S! y$ a B5 F, [
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);3 R3 s, s. w. Q8 W- p; k& Y# S
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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;5 U9 s( m& |( D6 v
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char *dmabufsrc1 = NULL;3 z% }+ S4 U* M4 C
char *dmabufsrc2 = NULL;- c) o/ w/ n3 G4 B( m
char *dmabufdest1 = NULL;0 f! c& \ J0 i9 Z& t
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;6 Z# G, _. z e4 h% ~
static int ccnt = 8;( t1 A5 M7 x3 l5 K9 {' b' W
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);0 k- v/ E% E* I7 J
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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