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 application0 o* D! g/ A/ M- i! t
/*
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* edma_test.c* Y7 s2 p4 @. W* d7 T6 L( y9 F
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* brief EDMA3 Test Application" v- {) H5 m. c- j, t7 _' e
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* This file contains EDMA3 Test code.8 l9 l" {% |5 V: O
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE; p) |/ x& W; M; v4 B N0 ~3 K$ m: v
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT+ S& D s- q. v# Q% E
* TO CHANGE.+ F( T, j, D0 `' E) o0 P: H
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/; h! y7 J& |8 l
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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 as3 F4 {( j" z; f' T- \$ f" R; ?
* published by the Free Software Foundation version 2.. K$ Q6 k8 e; C/ i J4 v# ^
*
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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 warranty4 Z; S1 m7 C- _; n/ p+ M5 {
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details., R' G* ~; f% p
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>9 j. B1 ?" @1 ^ ]& b% P3 ]
#include <linux/types.h>1 f2 h/ M9 a& j: G9 v
#include <linux/interrupt.h>: K0 `) Q5 P W
#include <asm/io.h>
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#include <linux/moduleparam.h>: _. U* }+ r% v1 T
#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>
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#include <asm/hardware/edma.h>) }/ b- n* a, N* ^: U3 w$ j7 a! Z: }
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#undef EDMA3_DEBUG/ R' t( G6 l9 S3 N, ?- q Q+ j
/*#define EDMA3_DEBUG*/( v o f( S: t* f/ h' k6 {
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)! e! H+ d) r; M9 _# n" l4 r
#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__), ~7 F e7 I7 f9 N( V0 L" f
#else( ?6 @& Y, O" S+ ?
#define DMA_PRINTK( x... )
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#define DMA_FN_IN0 I; S" Z' T, a" m0 _# Q0 h" T
#define DMA_FN_OUT5 d* o5 E/ D1 L
#endif2 y' ?; r0 L+ I. t( C1 p- U9 C
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22 i; U0 T% h2 T! h. B- ^
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;: o. h) L; Z# D" x& O+ n5 F- M
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);9 F' z6 J2 k. A+ t. ^, e) T) d2 ]( u
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue); Q- L9 E+ C3 ~, x/ P
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;7 @$ H5 o8 L9 N r2 h0 b
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;) B7 t: D5 ] O3 I
char *dmabufdest1 = NULL;2 `) Y( G* \6 |
char *dmabufdest2 = NULL;9 P& i7 O9 R9 V- k
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static int acnt = 512;
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static int bcnt = 8;/ S. y3 L3 {; w. e: V; B* G
static int ccnt = 8;* j- R$ S( s! M+ y8 Y: W3 a4 E
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module_param(acnt, int, S_IRUGO);, { n& E& C2 `- O5 m/ a
module_param(bcnt, int, S_IRUGO);( A7 ~' S+ `% b- i
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