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" M$ G4 ^ S+ b q! D$ J
/*: W6 r6 I x8 U5 g+ A5 G
* edma_test.c1 h- g9 C6 o8 Z4 {1 j6 f m: u
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.
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*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE6 ~7 h9 B+ d0 P* V( e! S1 P/ A
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.7 D2 q A$ p+ l! ~
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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+ u* ?8 `9 @# r5 Z6 M) U
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.0 @/ R% L' t) i3 H
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any" z1 p% p* _3 f9 l' `- g- _
* kind, whether express or implied; without even the implied warranty" n5 \( t7 |* @3 g
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the# J7 q. l! S' t% L
* GNU General Public License for more details.8 s# C$ Y3 Y6 G' n% H& A4 {
*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>; B9 [' C( n5 ~8 Y- U
#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>* g L- m& c7 N; b' H4 J
#include <mach/hardware.h>1 a7 N+ |* k. X0 e/ L
#include <mach/irqs.h>$ R2 D( C) c% _1 Z. V1 f, _0 v
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/7 B i: d' d3 m0 K, P1 G
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#ifdef EDMA3_DEBUG& p+ R I& }$ E
#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__)+ h3 w7 [1 s! d. k* h: X
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else2 Z9 E% L4 c, ^
#define DMA_PRINTK( x... )0 p$ O9 O4 R" P- K! N
#define DMA_FN_IN G4 o- Z- v6 g% a8 i. a# `
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)& e% b0 u0 G- o8 Y9 `7 H
#define STATIC_SHIFT 3* P6 }, k/ W& \' |/ }/ L: }
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22. W- m7 _* r! M. i
#define ITCCHEN_SHIFT 23$ L4 f( C, O! }; c; ~1 X; }7 V8 Y( {
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static volatile int irqraised1 = 0;0 N* f2 w5 @$ a$ r
static volatile int irqraised2 = 0;$ H, q# Z0 w9 P- E/ Y
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);- _: F; c8 m4 N. F9 }
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);! T, w, W+ s. B2 v
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;
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dma_addr_t dmaphyssrc2 = 0;8 ^9 g7 i5 m4 T" Y" K) p
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;2 Q5 s$ L; Y# X+ z# I3 \
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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;
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static int acnt = 512;; Q w1 S9 w- P \. ]3 o2 h
static int bcnt = 8; Y9 ^0 A9 J# M5 T7 J
static int ccnt = 8;0 ^9 K. q U- B; y7 V
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module_param(acnt, int, S_IRUGO);7 p2 ^9 r4 N$ t5 B
module_param(bcnt, int, S_IRUGO);) B2 _) K- ^/ ^
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