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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/*$ w" S! E: v8 ` _& a
* edma_test.c
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*
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* brief EDMA3 Test Application/ p+ |' C6 n" S+ h( j( |
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* This file contains EDMA3 Test code.6 ?+ O" q/ ~/ c- e z' N; C5 J7 }
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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.2 K7 ], _" i; c x& W% P
*
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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/or7 t9 V; v. }8 V$ Q3 e) W2 [: ^& B
* 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% T; l) }7 c5 G- I/ ~. p
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the. e3 z5 h8 F, v$ }+ B
* GNU General Public License for more details.
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>8 _; e# D0 d! y9 g, |6 P1 k$ p- c
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>5 t+ ~/ F6 {2 L6 X( A
#include <linux/sysctl.h>2 n) b( Y H6 F
#include <linux/mm.h>: A) }' R9 x5 q( g# B
#include <linux/dma-mapping.h>& w+ x" `' L+ `# _4 _/ g
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#include <mach/memory.h>- o% N% B& ^. p: @4 Y
#include <mach/hardware.h>- ?( d, E$ K# h y7 z7 ^4 d( {
#include <mach/irqs.h>, o8 g7 s% e8 H! ~# h* V
#include <asm/hardware/edma.h>- C. i/ V. I/ ]
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/: b+ h9 B5 k! W6 a# a6 _) [& ~- `
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#ifdef EDMA3_DEBUG/ ?, J$ Y6 e' [" }
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
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#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)+ o: }" F( p: r4 a
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)( f" B* a& I0 u$ B
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN, t) ~- T1 }! N$ W3 ^* |0 T3 a
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768); h9 @, Y* _7 @" Y9 i' R
#define STATIC_SHIFT 31 R2 t& ~& b- d" K2 V: {& K
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22: y, |, H" a1 t/ O, Q1 X
#define ITCCHEN_SHIFT 23+ p) ^" } R. m
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static volatile int irqraised1 = 0;' z; T) Q* Q( k# B6 v& `# N
static volatile int irqraised2 = 0;, _/ I+ A, ^ D& u$ Z" C
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);0 h1 ^9 a% O/ ]
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue); X J1 p9 w; g; Y3 A9 ?: O
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);1 E4 k9 X6 c2 K. O/ R
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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;9 x, V/ |0 ~5 S0 `# G
dma_addr_t dmaphysdest2 = 0;2 W, y, G( ~* T
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;% [7 C/ B' q z; `, r2 y% M. W
char *dmabufdest1 = NULL;3 M1 _9 ^) _' m$ V
char *dmabufdest2 = NULL;
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static int acnt = 512;& {8 Q0 J, }3 A1 m
static int bcnt = 8;
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static int ccnt = 8;- W2 @# G- j+ n/ Q2 u `
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module_param(acnt, int, S_IRUGO);( d( o: W, e# m& v: \+ @
module_param(bcnt, int, S_IRUGO);: j9 q8 x' I9 L2 @( v
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