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* f! a$ A3 x+ ^
/*
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* edma_test.c
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.) W3 X& d* c, I* H O [
*
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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 SUBJECT4 i/ V% L0 S- K& X) F( \ ?# X0 u
* TO CHANGE.
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/3 t0 h2 J+ ~) [* Q
*
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* This program is free software; you can redistribute it and/or- i0 C. C3 C) n# w3 Q
* modify it under the terms of the GNU General Public License as. ~( o# [) A7 o/ D& _
* published by the Free Software Foundation version 2.
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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 the0 a' m: ^ i# Q) }: J% q) }- x
* GNU General Public License for more details.
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*/
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#include <linux/module.h>3 H8 x6 L* X% l
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>, W4 ?( w: ]. H' `
#include <linux/interrupt.h>! k b( F5 m, d4 b0 y
#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>6 q$ _9 O$ F1 O! V( p; a t' u
#include <mach/hardware.h>% [/ e3 _0 k M% [) R
#include <mach/irqs.h>1 `- |: v& ~' i% a
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG7 F* D. |4 k& B4 _( T
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG( @3 O7 L$ G' Z! T5 l2 ]
#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__)
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#else# v( h" a, Y* J9 @
#define DMA_PRINTK( x... )
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#define DMA_FN_IN. `; ~. r4 p' P- s4 M# s( Q
#define DMA_FN_OUT2 B) |* k2 w/ \2 u1 k6 \ n8 ~
#endif. O0 c' `: g: {. g h
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)7 {$ K) B5 x0 O+ |6 y; p) L5 o9 t# s
#define STATIC_SHIFT 3" S) L I1 B v' L% S. Q
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22- y. u: ^9 @2 ?' e# W7 G3 c
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;. e3 u/ V$ w: d4 \ F
static volatile int irqraised2 = 0;( M; j! t, H: |7 H! K. O- y+ ^4 ]
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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);( H* H0 y" [7 H7 y4 s
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);& O; _! { S3 m
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dma_addr_t dmaphyssrc1 = 0;' P# R) f' M1 @8 p
dma_addr_t dmaphyssrc2 = 0;0 s) `! }- x) L9 c Q( }- B, n# g& `
dma_addr_t dmaphysdest1 = 0;& k+ f$ \( I' N' _$ c
dma_addr_t dmaphysdest2 = 0;( D; U5 ]& e7 I
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;8 g, l. Z& m: n( K. z
char *dmabufdest2 = NULL; r0 L7 N1 g# d; r1 c% ^# A& p
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static int acnt = 512;' I" ~5 x/ U) j
static int bcnt = 8;8 S% L; s9 R: R; ?
static int ccnt = 8;& i4 _; z6 u. Z+ C
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module_param(acnt, int, S_IRUGO);4 b& n0 z% w: ?1 L' s3 C3 E
module_param(bcnt, int, S_IRUGO);3 a# P1 r& p; F# N0 o' g
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