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 u( d: w% Z) _1 y* h
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* edma_test.c8 _$ D( m6 r. |& c9 K8 N
*
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* brief EDMA3 Test Application1 u" v& Z/ v: N4 R# F9 U' E% L
*
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* This file contains EDMA3 Test code.+ s+ f' E' O' d0 M. P6 u5 _5 I8 D
*
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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 SUBJECT5 f, {& p2 D( F8 F/ }2 I6 R) a: {
* TO CHANGE.: E- ^& o& n$ ^
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/$ k* a/ h3 d% s9 ?! j
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* This program is free software; you can redistribute it and/or/ E! i) U7 q/ y4 L, Y
* 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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* 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( ]7 l8 `- V, l0 n( s2 ]5 \+ o; t
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.. U4 _4 }5 D1 }4 D
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#include <linux/module.h>
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#include <linux/init.h>' ^; r! Z# V8 |! t- k1 @
#include <linux/errno.h>
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#include <linux/types.h>" w9 f0 _; Y& E- _9 M
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>, M: Y! |3 y6 l3 _8 A; k) ]6 v5 A9 b
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>/ T% R! C% ]% Y
#include <mach/irqs.h>* E' r- G3 t& Q! o
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG# d; p2 [3 X7 ~1 Y, O# @5 T6 h
/*#define EDMA3_DEBUG*/' J' u* b/ L7 e# S2 [1 P3 k
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#ifdef EDMA3_DEBUG6 f s- X6 ]" H, F! @
#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
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#define DMA_PRINTK( x... )3 [2 o3 D# [; ], F
#define DMA_FN_IN% u8 J4 c" Z) H7 F% S
#define DMA_FN_OUT; `- ^$ A B7 N, g1 j5 _! m3 J* Z
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)( b0 g" }: ]4 A' Q3 O) h; G
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 213 k- l9 y* _! b* v3 `6 p
#define TCCHEN_SHIFT 22/ N2 j) h5 x# `1 l) B* u# F4 H. b
#define ITCCHEN_SHIFT 230 I# e' A' {/ z" S
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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);
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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;* Y# Q! z2 a6 b( P% C2 |# m
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;- W. ]; S6 D; e X1 X" F
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;, Z; b4 u# K8 W
static int bcnt = 8;) K6 [; r( z- C; ^4 ? q
static int ccnt = 8;% |- d% l3 [" ^5 j
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module_param(acnt, int, S_IRUGO);# _( n% p3 H9 j0 E# ]9 u
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