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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/*
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* edma_test.c$ ]: ?! e- P& {, P. C' N# E R
*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE; y. D1 M0 a% M3 s
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT1 Y( ]# F5 ?# Z
* TO CHANGE.* S0 d6 A3 [ A, H1 G T ^
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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/or
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* modify it under the terms of the GNU General Public License as5 o. o0 K& J; M; a8 r3 i& \
* 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 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.
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*/
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#include <linux/module.h>& s! \2 S3 L' J- ~! p I9 e% r
#include <linux/init.h># `) ?1 J0 @/ j% s5 \, C
#include <linux/errno.h>& u# M( P' k9 s D! o, Q
#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>+ {/ u8 v8 M/ y6 R& t
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>4 a! K7 h$ j1 H2 j9 D0 J
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#include <mach/memory.h>
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#include <mach/hardware.h>* l5 B0 C6 W' n! _3 K
#include <mach/irqs.h>, y. p$ t5 g- f6 O* a9 A8 S
#include <asm/hardware/edma.h> @0 S- t+ ]* U2 s. G
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/! N; y/ v, f' i9 B
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#ifdef EDMA3_DEBUG3 B9 u! B0 ?- h* d
#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__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)5 f6 I+ C# T$ v
#else
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#define DMA_PRINTK( x... )$ q2 s1 C; l- t; T# U
#define DMA_FN_IN
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#define DMA_FN_OUT" B: I3 L& j2 U$ S
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)" A2 c7 u, Q# m2 F3 U
#define STATIC_SHIFT 3
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#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 238 w3 G% S4 y& q: q$ w( V- s; b
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static volatile int irqraised1 = 0;& w- G4 U# V9 u7 q# {( N. i
static volatile int irqraised2 = 0;0 \ `' J* ~ i P5 z
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);2 @: ^6 K! G4 s3 u6 p6 ~
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);1 \. N& f: Z( g6 q0 }9 p; s
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;' _6 x" P" i& C( `1 C& O
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;4 a5 k h+ W' V# r; }
dma_addr_t dmaphysdest2 = 0;! `3 W% z& C! o8 S
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char *dmabufsrc1 = NULL;# G: `- N4 l$ }& l: e4 q- e, E: O3 {
char *dmabufsrc2 = NULL;/ D$ j$ g4 P) p1 w
char *dmabufdest1 = NULL;9 e9 t( ?# |2 y! O" N& d
char *dmabufdest2 = NULL;; A8 F- N: K7 o9 G. j% y
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;, |7 p! W% z& ?4 p7 l8 p A
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module_param(acnt, int, S_IRUGO);! P8 H7 x6 C& m8 \2 O2 t! t& g7 I
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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