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% u" e! I, I
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* edma_test.c
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*
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* brief EDMA3 Test Application. U) e4 G) Y4 s5 t/ Z) N4 x- A
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* This file contains EDMA3 Test code.. W- _, C% J! I
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE5 k, l$ B% `) o! f& [1 {
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.( C* Y+ E/ b1 ]) W k
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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+ P8 F1 C# v) D( r, F0 c" z z4 ?
* modify it under the terms of the GNU General Public License as9 J7 T! z9 }$ _# X6 g _" X
* published by the Free Software Foundation version 2.
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*
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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 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.
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>2 _5 n- z# v9 t% `: [$ h
#include <linux/types.h>0 |- q( o; [# `
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>$ f+ z% C" }! z# Q# o2 C) n; X6 |
#include <linux/sysctl.h>. Z6 Y2 s/ ~4 v1 z; q/ Q2 X
#include <linux/mm.h>7 [& d+ ~: g! S1 U9 b" G" g
#include <linux/dma-mapping.h>+ v+ T5 ~# v' D0 `
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#include <mach/memory.h>0 q, q$ [" v) ^# l8 {. |
#include <mach/hardware.h>
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#include <mach/irqs.h># m9 g6 i. l" x* A7 H# t
#include <asm/hardware/edma.h>7 _, I" w, P/ [3 b& y
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#undef EDMA3_DEBUG5 p3 [9 e* d0 Q7 n1 @* z- F. c
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG2 s. q9 h% N' U- R
#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__)
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#else* a" K; q8 K+ C
#define DMA_PRINTK( x... )- Z2 {* D& p- p& _2 F W6 N J& v& C
#define DMA_FN_IN
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#define DMA_FN_OUT% X( Y* _2 Q* E) ]
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)4 K' \' k) P L) z
#define STATIC_SHIFT 3' |' r4 w2 U4 a! f$ [! t* H( p; L
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21! [7 I3 D( {9 g+ |% {
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 231 [, c7 c+ w2 W7 E) K( |6 P* X
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;% ?, W0 H8 {; ~6 s" a2 @4 v
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);" V$ b- {* Z( I4 `# @
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);0 x+ a# _5 Z, _! o, ]
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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;
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dma_addr_t dmaphysdest2 = 0;$ P3 {$ n6 ~. s: M; D* Q
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char *dmabufsrc1 = NULL;% O5 ?" a" N' X+ \3 q
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;& V7 k/ D* {, y q$ ~8 `$ u
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static int acnt = 512;: a7 G- L X9 ?; L8 _8 f$ W
static int bcnt = 8;" l" |& ~; E5 ?) l: b0 b
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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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