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' _1 B& Q) Z0 \3 ^' R3 p, V
/*
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* edma_test.c
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*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.
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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
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* TO CHANGE.& Q# H9 y1 p& X/ @: h
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/& z+ ~6 ]% j0 i' x5 Q' t" O" }
*
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* This program is free software; you can redistribute it and/or- X! F) j; A7 ?3 o! T4 S* ^8 ~
* modify it under the terms of the GNU General Public License as& P- M3 Y) d0 g) G5 K
* published by the Free Software Foundation version 2.3 p8 Y1 P! \' h/ k, w
*
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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 the0 u- l" Z0 _$ L+ m5 [& Y
* GNU General Public License for more details.
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#include <linux/module.h>
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#include <linux/init.h>/ d# D/ r) F/ Y: p" h
#include <linux/errno.h>8 S" t5 Y4 q3 r8 ^5 Q' ^# |* {4 |
#include <linux/types.h>
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#include <linux/interrupt.h>1 ]+ r# h! w) a5 ]
#include <asm/io.h>* i2 M7 i2 F8 W3 Y5 {5 F
#include <linux/moduleparam.h>2 D- n: E# a* ?
#include <linux/sysctl.h>
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#include <linux/mm.h>1 o- M: [) Q' r0 I$ H4 U
#include <linux/dma-mapping.h>, _ [ h7 c9 r- R, Y
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#include <mach/memory.h>! U2 y6 F$ b( z: U+ M
#include <mach/hardware.h>0 S( h( ]: N. g9 ~
#include <mach/irqs.h>! h. T7 S5 q$ H% a) E1 w
#include <asm/hardware/edma.h>! f* L9 o$ p8 n# G5 n
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/2 F E. [8 `" G7 L
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#ifdef EDMA3_DEBUG0 G. A: v# S) V+ I
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)3 W5 i$ P5 G6 H. `' W
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)/ B8 c8 Z4 K; b0 Y# J* U) X
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else! S- q% ~ B/ n$ y6 @8 U
#define DMA_PRINTK( x... )6 h% s' i( G1 w3 Y+ ^' Q
#define DMA_FN_IN
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#define DMA_FN_OUT) @, L: c) U9 F2 f* w# a
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)1 L# `) s* \. y* {
#define STATIC_SHIFT 36 t7 R& _0 {$ e& _. f# C6 y' l
#define TCINTEN_SHIFT 20 _2 X. [( {( p' q$ C- a$ p! B- c
#define ITCINTEN_SHIFT 216 h; ?% t$ j5 z) k1 G% `% @+ |
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;3 ]( ~' C4 J7 ^5 R$ R
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);. x$ y Y) Q" D6 i) x
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; v ]! ]# s, u) q
dma_addr_t dmaphysdest1 = 0;0 Z$ b7 `# P3 l/ s
dma_addr_t dmaphysdest2 = 0;+ F3 u% R4 m# B% l( K4 q% B
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char *dmabufsrc1 = NULL;7 y4 p" P/ M; i/ ~ E) C0 j
char *dmabufsrc2 = NULL;' [& t- l$ {0 }0 K0 G
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;& L$ w2 B+ H ]5 I
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static int acnt = 512;) D0 Y5 d B3 G7 [ g! O6 z
static int bcnt = 8;2 S- z/ d) g- T8 @) m
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);7 {) b! ? t/ v ~
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