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 application1 ~' n) l, k/ Y, q
/*
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* edma_test.c8 I- ]# m$ }# R9 f+ U3 i4 E4 O
*
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* brief EDMA3 Test Application9 f9 C6 E3 Z3 [# p2 \
*
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* This file contains EDMA3 Test code.- d4 i* ?$ i8 N3 s% D4 G5 A
*
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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' O$ x- A+ v/ K$ Q' N
* TO CHANGE.+ C8 J0 R% k7 l
*
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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/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.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty6 K- U9 j5 o& \2 F0 V
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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#include <linux/module.h>
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#include <linux/init.h># D F) u: V+ i' S1 { C. Z
#include <linux/errno.h>5 _0 R6 c# i" X7 {: N! J
#include <linux/types.h># {- k' v8 U9 l, i; }( n( [
#include <linux/interrupt.h>* F1 Q- s; f/ A& R! Z9 x, b+ b
#include <asm/io.h>
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#include <linux/moduleparam.h>, O7 s6 U3 g0 C9 T# J6 \
#include <linux/sysctl.h>, \3 o0 F ^) W* _9 b9 Z# m) F
#include <linux/mm.h>) m9 Q8 Y: Y: c1 |( U% V7 P
#include <linux/dma-mapping.h>+ t q+ U! a3 J! o
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>+ E. b) h7 l9 k( h, ]! B- f! Y8 o
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/3 p0 C4 C& t8 d! m* N
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)+ d1 S2 D5 A0 \# Y$ C
#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# g U$ ^2 v. S0 J$ j9 e4 M: i5 K L
#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT$ T3 j8 J# t& n* t4 W- R" {1 [( G
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)1 U6 l$ d# |$ I' V
#define STATIC_SHIFT 39 X7 X: [1 f5 [& o& F: H
#define TCINTEN_SHIFT 209 C5 O& O, k: S9 M1 q; c
#define ITCINTEN_SHIFT 216 E* {# \+ q1 j5 }6 r
#define TCCHEN_SHIFT 22# J7 N' P/ P* J. V, J
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;8 \" s3 n' D1 Q- z/ a2 [" Z
static volatile int irqraised2 = 0;) ]3 b7 ^* }4 @' t8 [: X
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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);
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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;3 Z: }% {9 D& B3 O. L7 x( ?
char *dmabufsrc2 = NULL;/ P! p# t3 v2 x5 b' }
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;" X1 o0 l1 |. A2 V% F9 Q
static int bcnt = 8;' t! g; c! C* }6 e
static int ccnt = 8;; d4 \7 E7 @# S' O; Z4 i2 g
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module_param(acnt, int, S_IRUGO);
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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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[未解决] OMAPL138如何在Linux下使用EDMA3驱动