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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/*$ } m+ H5 r5 P; f
* 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.. N+ T. ]& K. [
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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.( z* a5 g' P, y& L4 t! H
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/' [' w5 r2 X, h) c2 ]
*
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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 as) \1 p. ?9 I5 W
* published by the Free Software Foundation version 2.3 L4 l7 p9 K' D8 |9 N9 d+ i" t
*
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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.8 Q/ Y, `: f8 t+ i
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#include <linux/module.h>1 h" n+ H. ^1 }* h9 l% \
#include <linux/init.h>
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#include <linux/errno.h>$ _2 X+ j7 d8 S/ q. s; ]
#include <linux/types.h># J: t' T, _0 a+ ^: ^( B2 u9 J* p
#include <linux/interrupt.h>& _2 D8 Z2 y' @, Y/ d1 @
#include <asm/io.h>) `$ m f, U0 m2 S0 F
#include <linux/moduleparam.h>; \' ^) t4 o2 B7 [# C3 Y+ k4 z
#include <linux/sysctl.h>' L$ G5 d7 B9 V K% e! H* B. z/ S
#include <linux/mm.h>" {' ?; W( s1 ?% r# k$ S
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>4 D3 L h% u @ H
#include <mach/irqs.h>- [6 l- }5 x# x- k7 h# `: V) w
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/0 K/ H& ? a9 m, P9 E$ J' T
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#ifdef EDMA3_DEBUG# X8 \" Q3 e# _8 ~
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)) ]- \% W( r1 r) {3 P
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)& ]: t9 w! D$ {) ~# W* @# b
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)! [( Z9 a' Q, I5 z. a. e* n
#else
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#define DMA_PRINTK( x... ), I0 y* V0 e. D" Y
#define DMA_FN_IN
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#define DMA_FN_OUT6 ~- H5 r' t+ ~9 R$ r: A1 h
#endif5 D7 w1 U' P/ j0 a. ?# R' Z, {
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 34 u6 ?$ A- ^, I) X8 H9 A
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 236 ?, V1 j- I& z% j) y- s3 x
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static volatile int irqraised1 = 0;7 A6 W+ P- y9 J+ [& K. o0 _
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);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);% A6 \; c" `" n1 U1 v0 q) e
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);# B3 B1 G/ W# R C
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dma_addr_t dmaphyssrc1 = 0;0 V: s( n7 X% m: L, E0 Z& Z- w6 J7 D3 E
dma_addr_t dmaphyssrc2 = 0;8 v0 _- j' l5 }' r/ v s& D
dma_addr_t dmaphysdest1 = 0;' p# l. S, J- D5 w8 r
dma_addr_t dmaphysdest2 = 0;3 I* {* F/ t4 @+ D
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char *dmabufsrc1 = NULL;- d4 i, x& N0 g9 a) S' k/ ]9 A- ^4 A
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;$ \4 _$ O, ~: u
char *dmabufdest2 = NULL;% Z' ?, e; ?: \
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;; _3 }+ l( U8 @. }& N! u
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);. p8 ~+ P& z5 {8 I: x# j
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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