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( _! I, Z9 T, H" z
/*
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* edma_test.c
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*
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* brief EDMA3 Test Application! ]" S/ b7 D- J! S, ?1 j0 s4 P
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* This file contains EDMA3 Test code.: q" T2 i, Z7 `9 q' F1 B9 z
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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
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* TO CHANGE.+ R$ x& ~3 ]% Q; [) A) w
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or* \8 F1 ~) F: s+ g" ]
* 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. N$ C4 j; k& Y8 d9 x! |8 {
*
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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 warranty6 t5 w8 l( ?" K A# @! h* o' \
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the6 h. c& ~ U5 {# }1 P
* GNU General Public License for more details.6 q5 n/ d6 S; @6 p+ _! T$ b5 V
*/
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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>- \+ t+ P; B# j Y( H5 e- g
#include <linux/interrupt.h> @6 k* h' J; }- W+ K9 G7 D
#include <asm/io.h>/ R q; q! X) u: {4 U
#include <linux/moduleparam.h>2 b7 F# X" g& J8 e# ~
#include <linux/sysctl.h>
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#include <linux/mm.h>5 K* X1 [* g+ ~
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>* A' m) ]4 ~$ X- P# ]1 }
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG( B& o$ ?4 L1 S7 h" \- z) M r
/*#define EDMA3_DEBUG*/( b3 ~: d/ {# V4 |
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#ifdef EDMA3_DEBUG9 E5 w' B# N- z" `2 E* m: p
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)8 H; g6 r; w: p8 |& r
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)" I% E u) }0 p9 n
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else5 [$ D! t. w$ F
#define DMA_PRINTK( x... )
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#define DMA_FN_IN+ p8 u U; n+ D; E- r. w" `( T
#define DMA_FN_OUT( S8 \/ s; V9 y4 S! N' H& `
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)7 N \+ r, y. Z- T- s
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 205 Z% X' h- i2 ^- D2 E6 ?
#define ITCINTEN_SHIFT 21/ \8 W& X9 \! g9 m! f- a: G, a& S
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23) |0 L. p! [$ x% e7 G* \+ U
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static volatile int irqraised1 = 0;7 o9 k/ B3 X5 ?* ]# L* w; A0 x
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);* K6 d. \; _/ Q
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);9 `- f$ V) S! [) V" K9 i
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;1 G4 m0 m3 D4 s q
dma_addr_t dmaphysdest1 = 0;; b W3 n: G7 j& h5 m
dma_addr_t dmaphysdest2 = 0;0 T9 ^9 N9 K) N) D2 G j
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;* ]- X' x5 i1 v7 `$ w" X9 V# A
char *dmabufdest1 = NULL;! O: M8 G; V/ h5 M* _0 g+ _
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;, g8 \* U+ h3 l, B. } N( |3 d: @
static int ccnt = 8;6 z% R, b! b3 k" @
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module_param(acnt, int, S_IRUGO);7 M5 E9 k. M# r# g4 N% y4 t3 v0 L
module_param(bcnt, int, S_IRUGO);* p1 C L% s! U! B/ j9 h) {
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