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 o, J9 ]8 n0 j( c; I4 B
/*! }: U8 }4 M# E9 a1 f1 S1 C7 M
* edma_test.c. {7 p, {1 T4 ?
*
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* brief EDMA3 Test Application
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*/ L4 [% e( C( s3 U/ c- M
* This file contains EDMA3 Test code.# i8 ^2 M h* \* A
*+ M6 s+ D, C+ ~; G* m* n
* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE4 z6 Y" E0 ~9 b4 z9 H! q
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT4 ~% r% h, R9 A6 y
* TO CHANGE.* b1 \. X4 a* p) p
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/! O ?7 J- G3 @" P
*
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* This program is free software; you can redistribute it and/or7 c; i+ A5 J5 V! @- ~5 ~
* modify it under the terms of the GNU General Public License as4 r$ P8 f! }1 @, s, R8 j" _
* 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
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* kind, whether express or implied; without even the implied warranty1 O; l3 {$ B/ y3 o1 b1 s- P
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the' A) Z N" c1 U: l4 v2 \$ t, V
* GNU General Public License for more details.
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*/
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#include <linux/module.h> k3 F6 x1 b+ e
#include <linux/init.h>' p! ]: @% u4 c# Z, Q
#include <linux/errno.h>' A# I* i& r+ s v( o: c3 s
#include <linux/types.h>3 G, }/ Z8 ]( ~+ c% a+ d9 G/ W2 c
#include <linux/interrupt.h>
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#include <asm/io.h>/ o4 Y d' q# s2 X% k: ^
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>4 I4 Q. O: M( s4 s% x6 u! n
#include <linux/mm.h>
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#include <linux/dma-mapping.h>) \/ L; d$ I# z& v1 J4 s2 s+ L5 V
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#include <mach/memory.h>
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#include <mach/hardware.h>( H8 F# Q& \; }+ q- p% S; @- P
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)& R, R+ { K* g0 k
#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__)
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#else
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#define DMA_PRINTK( x... )6 B9 L3 O+ H) Q% a, t( t: G q
#define DMA_FN_IN: `1 `+ @1 w0 `2 a: F6 Z$ B
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768): s8 P3 G9 o* U! u3 J& I4 r
#define STATIC_SHIFT 3: ]. ]; c: [/ [9 K
#define TCINTEN_SHIFT 20 n5 b# `' A% }& r' s/ }
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;* B& Z! P. D# s$ I- |% o$ _
static volatile int irqraised2 = 0;; x8 `9 |! { U( o1 x
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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);
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int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);) a+ o% b% X* V6 C6 p
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;. t( H2 ^: ~' _/ K' ]
dma_addr_t dmaphysdest1 = 0;# S, b% Q2 r3 G; Y: R6 S
dma_addr_t dmaphysdest2 = 0;- M1 \, r. T1 d$ S4 b! W1 ` r* a' r
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char *dmabufsrc1 = NULL;/ R4 b" ` F' N2 |( c, J6 s; P& O; p M* M: E
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;/ X& s d& k) b; ~- p+ ?7 u
static int bcnt = 8;* E% s. z5 ~8 K6 r* z/ N+ F# s
static int ccnt = 8;, a- y- `* T2 }! ^; T; i
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module_param(acnt, int, S_IRUGO);- E( G# E7 I4 `( _ r& Z. X7 Z) C
module_param(bcnt, int, S_IRUGO); Z4 v4 r( J+ D& G: b
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