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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/*
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* edma_test.c' `/ O6 ^* H. m, Y1 r. t& d
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.1 ~$ u s: |' a( L' V& g
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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.7 ?1 p# b4 {+ s0 R- i' V, q J
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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 as2 d* h7 i+ m; {" P
* published by the Free Software Foundation version 2.3 i& Y* x, }. K) n/ }9 E2 Q! ~
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any+ n' P) a K# ~
* 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.% n! h, }+ F! R% R, V
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#include <linux/module.h>' a4 ^4 W: K' J7 `* E( p
#include <linux/init.h>% U4 ~# p9 {9 e! W! X
#include <linux/errno.h>
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#include <linux/types.h>8 R. S2 t) T( ?0 I7 \
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>/ F2 D- p! D; L4 ?. X# h+ f/ {
#include <linux/sysctl.h>2 a& H; b- h2 H) J. ?* Q, u
#include <linux/mm.h>, W* F6 C. s! j1 \* V; n
#include <linux/dma-mapping.h>( F. a! P! T8 D q/ R0 X; m8 K
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#include <mach/memory.h>$ Z& e( V3 i$ j( ]( L9 j+ J
#include <mach/hardware.h>' v: i& L; V$ J; v& p
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG, P6 v+ S" \; c0 I0 {
/*#define EDMA3_DEBUG*/3 L+ o: ~, Z3 }
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#ifdef EDMA3_DEBUG1 K' G8 p, q' B. n" `
#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 }9 w+ G) r* W e; n
#else
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#define DMA_PRINTK( x... )4 }4 l5 W; C7 f2 ~: [
#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)& L9 o$ X: A" d3 }9 X: C
#define STATIC_SHIFT 35 E" t1 r) i. a& X `
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21/ D# w. ~" G3 T" L
#define TCCHEN_SHIFT 22- F/ q) X/ Y; ]: X: q) T
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;1 R' v- i/ @# F4 I
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);
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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;% I. y# O3 N' a
dma_addr_t dmaphysdest1 = 0;0 {$ Y" D7 L! S e: w c) f4 U9 ^" h
dma_addr_t dmaphysdest2 = 0;8 P% P& l, c- u( C% q4 h, t
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;& P* m9 o% N8 r
char *dmabufdest2 = NULL;2 Q9 a! E3 K* P- w5 Y$ R
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;3 [- p% d/ Y8 q3 i5 y8 t& e
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module_param(acnt, int, S_IRUGO);1 D+ E; m+ x7 F. P" ]# T
module_param(bcnt, int, S_IRUGO);* S9 q7 ~5 l9 K. P R
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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