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" K& M( G, d4 R& Y
/*
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* edma_test.c
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*: M, |* e3 R; a) p* e ^5 j
* brief EDMA3 Test Application6 R6 ^8 ?! a, u5 z0 ^+ N
*
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* This file contains EDMA3 Test code./ J+ d3 u$ U& k
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE+ f* s- u- U6 T9 u& P: Q
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT# ~$ }$ g! k K7 R7 q
* TO CHANGE.* f1 \) K% B1 v2 E. G9 h1 S2 \. E
*
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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
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* modify it under the terms of the GNU General Public License as1 x# s! W- d0 ]5 {: c6 d
* published by the Free Software Foundation version 2.
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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 warranty0 G" `$ s! f/ \+ A4 w/ q0 n1 P8 t
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.: p( ~& [# M9 W) t/ r; L
*/
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#include <linux/module.h>) Y9 T' n3 Y; Y2 M
#include <linux/init.h> ]( J, e" x# o s. Y
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>5 h+ I# P- `/ W6 \1 Q3 {
#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>, e% ~# F* F1 {9 v" R# L; t4 _
#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>. W7 @6 ]; r" ?0 E/ [
#include <mach/hardware.h>' O! M6 H; y0 p: R% t% `1 a
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>5 w9 ]; x9 L5 ]% B+ O$ D
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#undef EDMA3_DEBUG5 g* d& L1 i+ P3 q
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG4 ]. p- N, p" A h, s2 M: y
#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__)" B3 l6 _, K) k; x
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else$ i% _. j% T$ B& ~* Z/ Z( B
#define DMA_PRINTK( x... ): C9 f# N! q+ M, l! z: q& V
#define DMA_FN_IN
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#define DMA_FN_OUT: L* |6 x6 Y ?3 U8 x: \! ^1 j5 L
#endif z* o; j. n$ L! K3 D* S4 E
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)( k" ]6 H4 U/ P1 b2 N1 G
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 201 }* S0 M* t! h7 n1 R( C& Y
#define ITCINTEN_SHIFT 21$ ]1 j9 G& Q4 N1 T2 S" |6 v
#define TCCHEN_SHIFT 229 G- h) m3 O8 k4 h* l- ?% L
#define ITCCHEN_SHIFT 236 S7 N5 Y$ o r7 {9 L. A% _0 s
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;* |% j7 Z s8 B
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);% l+ _* { L8 }6 t O5 k A
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);$ S" Q, F/ u; p/ R& n9 _' J
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;
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dma_addr_t dmaphysdest1 = 0;' ]+ u! t' F) Q7 x1 P O. P
dma_addr_t dmaphysdest2 = 0;' }/ j( w+ r# x# p, n
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;' k" L( R! g! {! a9 }" R+ H# ]/ g
char *dmabufdest2 = NULL;9 M% ?+ v% M5 o2 o% [/ d1 O. W3 f
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static int acnt = 512;
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static int bcnt = 8;% R- y# \& e* g. ?6 L9 ?
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);9 M* l' V; z( |; B$ x$ d5 }2 `) u
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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