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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* brief EDMA3 Test Application* F* ^0 g0 U/ f5 S
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* This file contains EDMA3 Test code.* J9 z3 N0 A4 w! ~# `1 ~; V7 o$ ?
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE$ T) ~, ^+ ~6 q# `. \' Z# D
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.# Y& v" ?/ i; A2 W; Q) v; n
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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
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* published by the Free Software Foundation version 2.
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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 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.+ R: W, C; s; F# S- }7 o
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#include <linux/module.h>' ~; K3 r; t( Z
#include <linux/init.h>* ?9 c+ n2 ~& d" s5 R" H1 N! P
#include <linux/errno.h>
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#include <linux/types.h>8 W; e) z! Z8 j; i, c: w
#include <linux/interrupt.h>7 l6 Z, x+ c4 {" a
#include <asm/io.h>8 p' C( F! ]# ^( X0 Z
#include <linux/moduleparam.h>
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#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>3 X" P; R1 O+ R4 Z
#include <asm/hardware/edma.h>5 F8 G; ]( X0 K9 y8 O8 r
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/- W1 O o6 x9 K
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#ifdef EDMA3_DEBUG+ d% n# x( d) c. U6 R. v
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)7 D e* \% g3 Z0 Z6 {( ~* K% j
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)$ E. ]( D, C& p$ R( \, f$ p
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__) h, o/ ?' [7 r% m- R( \9 h! P
#else
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#define DMA_PRINTK( x... )" e0 Z8 E, r- f, S, L a& c
#define DMA_FN_IN
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#define DMA_FN_OUT9 s A. D5 V; _% Y8 A
#endif8 b3 \: L0 i* H* y& z
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 31 S- M6 E; _' |6 V3 ~* R# ?
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21/ j9 k1 b5 N4 U- i# W
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;+ N# K. {2 B! p" y& B
static volatile int irqraised2 = 0;/ Y" t" |% p f( m6 g. E
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);/ V0 @$ v T, t5 f7 I0 Z$ e
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);) a7 F4 Z8 D( r- u) |. }6 |
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);' q4 d' k$ `/ O3 z1 Q" I
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dma_addr_t dmaphyssrc1 = 0;0 ?/ U1 D5 @( R$ J* a& R) R2 {6 M7 h
dma_addr_t dmaphyssrc2 = 0;+ ?8 I: {. {0 R/ x/ m3 h& K5 g
dma_addr_t dmaphysdest1 = 0;, v) F7 b/ ]1 D6 f# U, R1 B
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;2 b1 L4 ^3 Z' F- R3 j0 d
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;' y9 K1 K7 e- N0 g4 }1 H# t/ U
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;8 n7 T: d7 G4 q5 {
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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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