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/ s; F! i B8 P9 x9 B2 e3 V
/*
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* edma_test.c' M0 x; Q- Z* L2 m( `6 z
*
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.. e6 ~8 }1 u5 T* O
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE1 J* f3 X3 k/ y R$ }! f9 n" h: L, x
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.; H! y6 }$ v" X8 u
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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
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* 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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** q, R6 B6 D" x% c3 B
* This program is distributed "as is" WITHOUT ANY WARRANTY of any& q; F" }; i0 f7 k
* kind, whether express or implied; without even the implied warranty5 P# |+ f. j/ W' a' ^% t" L
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.) q# \& n2 @' q+ o' f6 z
*/
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#include <linux/module.h>
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#include <linux/init.h>) u% |) W0 d2 i$ X! @: I9 c9 |7 }
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>" o0 A" f B. |% C
#include <linux/sysctl.h>3 v2 a5 n! q3 K# s% }
#include <linux/mm.h>
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#include <linux/dma-mapping.h>' ]4 o5 ~# N, ^. M+ l
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#include <mach/memory.h>6 P: k' ^7 x. r$ G$ f
#include <mach/hardware.h>
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#include <mach/irqs.h>9 P2 I, }' }. A+ f7 A4 X2 H
#include <asm/hardware/edma.h>
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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__)7 a6 j3 _* U/ Q" k3 n: l {
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#define DMA_PRINTK( x... ): ~. c* ^( u9 K* r( O& B4 z
#define DMA_FN_IN
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#define DMA_FN_OUT' f& f7 f: e: }0 Z- S7 L( q
#endif2 D' S8 `4 F1 Z% i9 M9 z
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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" K# ^4 T: F) W0 m: @% G
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22* T m# ? T9 _, u
#define ITCCHEN_SHIFT 239 H7 H1 ]: `" |* {) i
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static volatile int irqraised1 = 0;
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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);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);0 k/ b7 B0 k9 q( U% r, X! g, n
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);/ q) [3 e: H2 a; y
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dma_addr_t dmaphyssrc1 = 0;; @5 R! D9 r7 s7 }
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0; U3 q- l) @; H% Z
dma_addr_t dmaphysdest2 = 0;' u" j0 j, D% B- n
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char *dmabufsrc1 = NULL;
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;0 |4 H2 a, k& ^1 o9 w( i+ B
char *dmabufdest2 = NULL;. H0 l, ^5 J8 u
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;$ a% \" H* l6 f& w5 N
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);# V6 i. T5 M |4 t4 V' k8 F5 ^
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