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 application6 A+ @2 c3 u6 n# W: R6 Q
/*
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* edma_test.c" X- \2 P. n( f2 j3 a8 E( l7 ]
** U; {9 i; M$ a- V% P. _2 I: p- p
* brief EDMA3 Test Application+ b: k" _) k+ x9 [" h3 A
*( {! T% a0 }3 \: ^) M3 M9 J: {
* This file contains EDMA3 Test code.1 W* m6 o2 _- X
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE+ x- f. h; }1 T% F# R& J% u8 t5 K
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT6 d/ l) g( i3 T* ?
* TO CHANGE.4 A; S$ L) s- q3 x
*
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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) g4 n5 q- g$ s
* 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' E/ @& s* {. a9 @" M
* kind, whether express or implied; without even the implied warranty6 b4 c I9 ?3 q* J
* 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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*/
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#include <linux/module.h>
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#include <linux/init.h>3 ?$ g/ e1 ~4 D
#include <linux/errno.h>6 \9 _: d8 B8 w2 f# R8 |* v( f
#include <linux/types.h>/ H M* W# B9 v; p5 X' k; o. K
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>; g9 Z- i) F) `- ~1 L/ x
#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>; }& w. C; W. _- q1 x: |
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>. K6 J4 h" V" B; P, r7 \
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/7 ]% S1 z: J' e
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)5 ?' o* J7 G( q! I) o" {+ X6 B0 a
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__): _4 a( }& X- S4 L* @
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__). E& d9 h8 V% u! ]1 U7 d: h5 N
#else/ z! I M- E h J2 p. I. N: z- V
#define DMA_PRINTK( x... )
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#define DMA_FN_IN8 j; m" P" a, j% n; [: q
#define DMA_FN_OUT' S* Q, A, T+ ?: q0 L
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 34 j9 _. l8 l) B1 _
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 217 S8 W; j G) H6 @
#define TCCHEN_SHIFT 22% Y- h0 ?/ H7 b& \9 H: H
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;4 h) D8 ^' G% A* v" O/ d$ v
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);9 c# Z6 U; g$ f( V
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);) d6 R; ?2 g* F; {: A- G3 a
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;3 H6 T- c. g2 d0 A) t. D$ z! ?" k
dma_addr_t dmaphysdest1 = 0;6 @: z1 j% w" U$ I n
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;2 O' e; |) R# }4 |7 ^' Q5 i
char *dmabufsrc2 = NULL;/ E) Y/ x8 D9 y7 v" @
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;& S/ H7 B2 D8 h
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static int acnt = 512;5 K, \5 `. x1 O9 @1 A# `( [
static int bcnt = 8;5 z2 C- h" s$ }0 f8 ?
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);2 A# y: k* H. g( [ y# P
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