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$ r' s& \4 }5 ~# `" a1 }0 G
/*1 Z1 X5 H/ u- ?$ q1 U8 ^
* edma_test.c% {+ ]' V% Q0 M( a) h
*
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* brief EDMA3 Test Application% p" f4 O% ?" z5 b5 H# ?
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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) \/ {; U: S) q; n8 k. J3 `' O+ z. g
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT h9 D' e, P9 P5 c7 O
* TO CHANGE.% M$ M4 _2 |! n
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/: K2 q! I/ s) N6 _) _4 w" s" y
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* This program is free software; you can redistribute it and/or( `% f* }/ f! l, p8 M: v0 x
* modify it under the terms of the GNU General Public License as8 ]/ c' X# O: B! A
* published by the Free Software Foundation version 2." P1 H# }7 g$ g) j
*% }, K4 @0 K6 E7 b' {$ ~! B
* 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$ i( ?' D8 G. n
* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/init.h> X' C4 p: b. V) d3 k) d
#include <linux/errno.h>5 [ D. e6 W% `6 @% i' Z
#include <linux/types.h>
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#include <linux/interrupt.h>* s! c& C/ C6 h# u# _( i
#include <asm/io.h>3 T0 y; X' K! F% ~ {! g
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>- Z8 P7 V/ A1 j1 W& Q" F
#include <linux/mm.h>' J3 D! u, Q K; T* e, m( Y- ^
#include <linux/dma-mapping.h>! U7 Z$ x; R' P" K& e3 F. ~( a
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>& {% a. }) W7 f
#include <asm/hardware/edma.h>$ u& x# n, p5 H/ z9 z
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#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__)$ \/ l. [1 l6 {; x* w5 }% P+ X3 q
#else6 `0 J' o. G H
#define DMA_PRINTK( x... )+ l) f+ Z5 c1 x v. B% j7 j/ A
#define DMA_FN_IN
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#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
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#define TCINTEN_SHIFT 20) i! f4 O) k9 z
#define ITCINTEN_SHIFT 214 e, }7 u" L% b) c
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;$ l- o$ _4 R) B+ l( Z- S
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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);, W! k0 a3 F- y% C- ]) `
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);- Y( D: S. W) F. E" V. f' {
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dma_addr_t dmaphyssrc1 = 0;2 g1 |5 h7 i6 N; R
dma_addr_t dmaphyssrc2 = 0; h0 h2 ?/ G# @, @
dma_addr_t dmaphysdest1 = 0;9 _, p1 E- X1 ~+ J, |
dma_addr_t dmaphysdest2 = 0;" n# Y' S' J0 z) L* A
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;6 a1 s( x: _$ d4 S
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;, s9 X1 ]; [# I) ~) m& p0 b
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module_param(acnt, int, S_IRUGO);& Q8 ^: p# Q9 H
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