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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/*1 N+ L& o# h$ p! w3 `
* edma_test.c. W1 F# `' w% B& I
*
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* brief EDMA3 Test Application5 z. U0 `# L' J& }: C- J+ ^/ \5 b
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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 BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT v0 x0 R1 s2 b- `% }. E
* TO CHANGE./ m( ^! |/ c% {: n8 ^
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/" z! ?( P0 \; \ U; Y
*
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* This program is free software; you can redistribute it and/or: W7 b3 [- y( T! v
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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*/ c6 o2 X/ m: W& G( H9 J/ ]1 H
* This program is distributed "as is" WITHOUT ANY WARRANTY of any# V5 F$ w3 f3 u& `( o
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the/ y+ ?: b |) ^" b8 }- x
* GNU General Public License for more details.% ]1 n6 V2 {- L: m2 T5 V
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#include <linux/module.h>1 ^0 N4 s# U5 J/ D4 d4 h B7 L
#include <linux/init.h>6 s2 N, C! A1 |
#include <linux/errno.h>. U7 V9 \6 u1 G9 E( D
#include <linux/types.h>
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#include <linux/interrupt.h>. ?" a4 `! l9 g4 j( [
#include <asm/io.h>. R8 o+ \% |; }( D) D. [) H
#include <linux/moduleparam.h># h, J: g$ a; k
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>1 s. ] Q7 C% r! @8 |3 p8 D, ~, I j1 m
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#include <mach/memory.h>4 z! I) C1 {" e& ^( I8 t1 F2 Q, D
#include <mach/hardware.h>
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#include <mach/irqs.h>6 h; j4 ~+ u, j: |. \& M9 i
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG0 Z3 ?; W& q7 ~' e1 `9 G
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG+ v" ]: O6 b6 t* o
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)/ K" {* N+ }' Y
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)/ O* s- F. m+ f- j' m H5 I. A
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else8 |$ Y& `7 i( |! T) \4 n
#define DMA_PRINTK( x... )5 E+ V4 f$ k% }# I
#define DMA_FN_IN
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#define DMA_FN_OUT. t* _: K3 b% y/ W, q9 h* h
#endif9 G8 m: X L0 U% @
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#define MAX_DMA_TRANSFER_IN_BYTES (32768); S/ Y0 C! i: ]+ ~( e
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 208 ?5 t+ W% i5 O" G# a' u+ S/ |
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 221 ~4 F1 g; L" ]+ m0 M0 e
#define ITCCHEN_SHIFT 23/ d1 o( x4 X- a$ Y
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static volatile int irqraised1 = 0;( K) j/ @# K4 `5 O+ }7 }
static volatile int irqraised2 = 0;
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);/ u; M# c! t; n' X" u
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);9 f8 K' m2 ?' P- a; f9 i
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; T& @/ w" I. U) _; `
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;2 W+ v3 }( U& _" U/ r
dma_addr_t dmaphysdest2 = 0;9 C8 }- b5 O, U$ L4 @$ N) x
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;& c0 T1 T) b, h& N( K
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;8 T! [& s, \% ^* \* E) L9 T3 z( J
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);2 Z) B! j3 j l8 s
module_param(bcnt, int, S_IRUGO);: @7 {4 k" N4 Z( ~( ]
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