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; E# o: v$ C9 k2 _; A: ^2 J
/** I8 k: L* @0 W$ L
* edma_test.c# C2 Q' t6 X" I! k4 L
*
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* brief EDMA3 Test Application* x5 ^$ g" b! {, n
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* This file contains EDMA3 Test code.( `9 i/ z( ^9 R, V' z6 G
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE7 L* ^* ]% m# I, @2 A
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT, ^1 x- H& W) i6 l: a+ ~
* TO CHANGE.6 A9 E; Z9 c4 D) R
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com// k; y& s" k1 f* J2 X
*
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* This program is free software; you can redistribute it and/or. C2 a* U) w) ]+ L
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2./ v' J# q2 Y- M6 S+ X3 q0 t: ]
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any& A. D/ }/ t+ J, ]- ~
* 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. M& y- P/ L3 D8 m- N& e5 H3 D2 \
*/
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#include <linux/module.h>/ J$ T- ~1 ?) W- U7 R! m7 N7 g( h
#include <linux/init.h> K9 e, O: p m+ A1 j6 x, Z' \
#include <linux/errno.h>& I2 j4 f9 u$ Z6 ]7 N# y+ a
#include <linux/types.h># Y$ v" e! o9 b0 l9 D' K
#include <linux/interrupt.h># s4 Z% E7 T0 a& {6 q
#include <asm/io.h>, V9 m0 W, d/ o0 X8 @" O7 c
#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>: o# ~. d5 Y8 ]
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#include <mach/memory.h>" `+ D" d2 |% g$ K1 v z
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>3 n" }6 ~/ l1 q& v
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#undef EDMA3_DEBUG9 z* [) m, G: \. Q7 b; G/ \- z! j
/*#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__)0 e7 M# P5 h4 } k
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)1 j% d. e8 S) a, }" ~# Z+ R
#else
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#define DMA_PRINTK( x... )2 ~4 R7 K; `$ M" _, j% @1 m
#define DMA_FN_IN$ S8 [, A& P6 c. T/ k
#define DMA_FN_OUT1 ~2 D( a. F; ], q- L
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)! Q+ D: s! w& q
#define STATIC_SHIFT 3$ C8 ?3 V# R+ o3 O8 n& @7 e0 S: s
#define TCINTEN_SHIFT 20; n9 h' t: {5 `% V8 V9 s
#define ITCINTEN_SHIFT 21$ p5 m9 G( T* \3 g8 x( C
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;& V, X2 [3 s) w: k- U
static volatile int irqraised2 = 0;1 Y. H3 D- n, Q7 c K9 c, l
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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);4 V# K! J1 Z& |6 |
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);& E0 u% `4 i W- ]
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;7 E1 I. L# C( e6 R
dma_addr_t dmaphysdest2 = 0;8 Y* c; C* ?1 G/ q) u2 N g
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;/ _6 H" b9 g0 }' V
char *dmabufdest2 = NULL;
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static int acnt = 512;7 g. V- f2 k& ~; c
static int bcnt = 8;! r/ Y6 v) G6 L
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);. h3 C+ S+ t& U/ L
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