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. l" t k" a/ w/ i6 ^
/*
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* edma_test.c: B' i$ K/ a6 E
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.4 @! Q P3 A; v( H3 Q& m( G0 q
*
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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., A+ w! ]4 E& K4 [
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/ L8 N' X& ?" j0 d: m
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* This program is free software; you can redistribute it and/or( t V2 v6 c7 Z( p! B+ 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 any7 J1 B y& j ]
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the2 h# t; J5 |7 I x6 `' Q
* GNU General Public License for more details.
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*/6 B# M8 b. ~1 _. P* U& u1 ~/ }0 Z
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#include <linux/module.h>* u A2 S5 @& T- i
#include <linux/init.h>
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#include <linux/errno.h>) V' y4 k3 O* L! |7 c0 s+ T6 T1 b
#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>
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#include <linux/sysctl.h> G, _' M+ L& F; B
#include <linux/mm.h>2 j* i! U# g8 z% g* `8 l: `2 R
#include <linux/dma-mapping.h>
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#include <mach/memory.h>" {5 l G. c3 n. ^; ?, L# Q
#include <mach/hardware.h>& H& y9 }% m7 {1 v2 F: L
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>5 B. F+ o- Q& U8 f+ [: H8 V
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#undef EDMA3_DEBUG. M K1 ^3 S% h4 c' ^5 ~ B3 _( v
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG: B/ B2 U2 l9 o4 Y+ W7 s/ v \
#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__)+ ?0 x, x- d9 {- X6 J
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)* }/ F9 T( _/ E7 e! J8 {# t
#else7 \7 \9 Y9 \; o5 i! G; }* Z
#define DMA_PRINTK( x... )1 n! @+ j- ^7 ~4 H( a& s+ m
#define DMA_FN_IN/ ^; ^# K; {1 r* j( W" T$ y% Q! w
#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 3; x- X y; ^1 H* U! i* i( z: m! g% F
#define TCINTEN_SHIFT 20 b. L- ~9 Z, s4 i
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23, Z3 Q6 t: `* Z' D
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static volatile int irqraised1 = 0;) c; I7 T; @. P# i- P
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);; U, r- f9 g! l ]
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);' w* s6 t- t S- A1 V+ k
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dma_addr_t dmaphyssrc1 = 0;8 z: i) j# U; x- B4 z
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;0 B1 [! e0 U4 C' b! I
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char *dmabufsrc1 = NULL;2 m2 {2 ^' F1 k, n+ D- w
char *dmabufsrc2 = NULL;; n) P7 B, ?( C$ \: H9 \0 B( ^9 |1 O0 P
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;9 Z }7 T. ]' ^- ~
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module_param(acnt, int, S_IRUGO);0 [. I* J" y% ~, T6 \
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