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
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*- w, t" W2 z" k4 f; U" \
* brief EDMA3 Test Application( \8 `- B @) U7 U' U: H
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* This file contains EDMA3 Test code.4 B- | d5 L, c( W0 }/ o
*
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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
* TO CHANGE./ ~1 y) ]& S) X: F0 l7 i
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/( ~$ t, e3 u8 J
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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+ V4 N( U) t- C2 `) K' Q
* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any, X, ?" V2 E, r. H1 B& Q4 c+ q5 i
* kind, whether express or implied; without even the implied warranty6 n; h9 ?; a( l, N1 u8 D6 L+ R( @
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the# B+ `2 K5 n* ?9 t( G
* GNU General Public License for more details.7 k3 P F! ^9 ], T
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>. D7 H! E) ~- n/ x/ m# Q0 D
#include <linux/interrupt.h>0 J+ ?% y# m3 F/ o5 U; |' z3 C
#include <asm/io.h>2 V9 B$ w3 D- g8 l
#include <linux/moduleparam.h>3 U" ], W: m4 X8 j( j% J5 T2 [# J; M
#include <linux/sysctl.h>9 q- f( }- _/ j# [! \; n; u
#include <linux/mm.h>% g1 Z$ B2 t+ j" d( N
#include <linux/dma-mapping.h>( |3 ~; x5 f# N; L8 X
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#include <mach/memory.h>+ P3 H0 X3 r( q! e
#include <mach/hardware.h>6 n# I2 T- j. p
#include <mach/irqs.h>$ B) }; q- m' ?! ~3 W4 o- M
#include <asm/hardware/edma.h>2 T: d: S+ k! l* i1 V- [- `
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#undef EDMA3_DEBUG' \, i! t3 {( e4 Q- k0 p- T$ m9 A
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG. W, U0 w5 m: H, X2 L! y
#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__)- ^$ e! t Y4 X0 _% w' T8 }- a
#else% U- [" T. U9 Q1 u( B& U
#define DMA_PRINTK( x... )) u* v3 E) a; {; L7 g9 t
#define DMA_FN_IN6 @! k) p# W% t' r- b# w
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)- } f& f/ m% N8 E0 K, z" w' l
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20; @, h7 N) s+ q: I: X
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22- A0 T$ g/ a& x" {
#define ITCCHEN_SHIFT 23& F1 y" k' ~, I% `/ i# k& _
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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);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);4 D9 w4 c g* i9 W- A
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;& F# ^4 b" P% ^$ @5 A
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;$ V: W( c7 ^, }& g; s+ }
char *dmabufdest2 = NULL;
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static int acnt = 512;0 F- W0 z, A1 _1 J1 o0 K
static int bcnt = 8;4 G" F' g9 O% B2 G* [4 x; o
static int ccnt = 8;" x) b7 K! ~& ^/ _9 ] R" ~
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module_param(acnt, int, S_IRUGO);' C% c" P0 j" X, V+ M2 o, R
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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