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" T/ J8 o; N3 O* c2 W
/*
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* edma_test.c
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* brief EDMA3 Test Application4 p/ B/ ]( G0 g* w$ S
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* This file contains EDMA3 Test code.
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*
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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$ f7 h1 q4 v- {/ T2 T3 A
* TO CHANGE.
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*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*- m- R+ }3 T$ H2 t4 K: }/ R+ F
* This program is free software; you can redistribute it and/or& u$ a9 |% k/ V' X a' h
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.; u; |/ B4 N7 m, ~3 R; L+ g
*
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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 the
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* GNU General Public License for more details.2 m J9 E' m* L) S
*/
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#include <linux/module.h>1 W: ?8 k# l q$ l" }
#include <linux/init.h>+ q6 w& O4 t9 I; [4 u% s7 W: n) }2 w
#include <linux/errno.h>
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#include <linux/types.h>* c& V6 B! Z) E1 G1 ` [# X9 Q
#include <linux/interrupt.h>
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#include <asm/io.h>" f. `% d# I4 X$ t
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>4 f' `+ y! @9 o
#include <linux/mm.h>
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#include <linux/dma-mapping.h># V% k9 `$ T+ S5 P5 O0 m- E' }
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#include <mach/memory.h>/ N* a. D2 K" |0 N2 t2 ^
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h># @1 r, X( u- Q* _9 L6 J' R
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#undef EDMA3_DEBUG9 F' L2 I1 b. \: b6 M0 c& V# j% d
/*#define EDMA3_DEBUG*/- V9 W+ e1 ~; m3 i- v
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)0 ^' ^2 P0 f2 l3 I _
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__); K% H# u( S- J# |1 h- X3 Z
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else+ [) ~, E' b/ k8 P
#define DMA_PRINTK( x... )
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#define DMA_FN_IN5 g8 n* [# I( ^# l6 l" n; i
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 30 j& o' V* b3 N# ^1 r, F. r- p
#define TCINTEN_SHIFT 207 Q: g2 Q, Q. v" L+ G0 [, o+ c
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 231 L* ~' x3 o- J2 h$ Y3 C5 g
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;- g) h6 G. d! Q! U9 v) M' s$ J
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);; p; o( W! Y& W. |* u9 d( D1 H
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;# o, \: f6 P2 q" T+ {% _4 O! `9 b# [
dma_addr_t dmaphyssrc2 = 0;* V% V* P( [. B& O& }! U# f) T
dma_addr_t dmaphysdest1 = 0;- d4 |# t4 G2 t% h N6 @3 U. R+ i' N/ `
dma_addr_t dmaphysdest2 = 0;: K6 T7 k- F5 @1 S8 ?
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char *dmabufsrc1 = NULL;. R; M) |" w9 ?' b7 R% X
char *dmabufsrc2 = NULL;' ~1 x6 b# j/ T g. B
char *dmabufdest1 = NULL;" r/ b$ q. W5 l/ }3 p; C- Y+ @0 k
char *dmabufdest2 = NULL;# Y% i, m+ d" a' w8 y
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static int acnt = 512;; S, ^# ~+ ^/ o4 J/ d3 x z
static int bcnt = 8;1 z, N9 e7 w5 P6 F" c) ^
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);7 z1 F6 v7 B5 s' H. k
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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