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 application2 W; r- B2 Y; F0 ~1 T: ?
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* edma_test.c2 |. T3 _2 @/ W4 r; M+ s/ K
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* brief EDMA3 Test Application, S5 X: b3 M( T
*
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* This file contains EDMA3 Test code.$ p4 O3 Z7 G) J( ^
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE* V7 I+ U# K K, ^% G8 L4 Y
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT7 H3 f/ k- K* ~! y
* TO CHANGE.0 j( v$ R& d( |3 r$ r
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/. \8 q) {+ S* w+ R# `! x
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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./ a& w2 M% B) i& x4 Q
*
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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. f- {0 F0 E" r
* GNU General Public License for more details.
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*/
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#include <linux/module.h>8 V W( l4 i+ P0 e& o/ Y' n8 N. w
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>$ T% M, e* @2 H( M% H! D$ p
#include <asm/io.h>2 s3 V9 V5 ]' S' h& H. A" r. g6 t0 M
#include <linux/moduleparam.h>0 X5 \9 m5 z5 Z9 f+ w
#include <linux/sysctl.h>/ \' `$ l3 W/ r# p6 e
#include <linux/mm.h>7 }+ a8 S7 b4 W+ P
#include <linux/dma-mapping.h># k6 _* x; F( s& M+ H* c
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#include <mach/memory.h>
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#include <mach/hardware.h>! N3 Y) b8 A" P: t8 ?% Q5 _
#include <mach/irqs.h>3 u+ u A. ~0 n' C
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG/ O5 R# e2 s3 ~ A5 _9 P
/*#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__)
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#else, ]8 C i& T& O- H9 d8 Y
#define DMA_PRINTK( x... )
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#define DMA_FN_IN* B/ d C( A @1 g
#define DMA_FN_OUT' A9 i, Q; w, I0 l9 ^2 Y
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)$ W5 u7 @1 c9 Z8 Z
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 238 Q5 O9 E \! \0 q
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static volatile int irqraised1 = 0;: e6 I$ \0 z6 z
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);, h/ X, y) Y# P8 q3 K
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue); E& j3 ?- k& Y6 f& j2 O
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;5 y; g3 Q. q9 s1 \. H; }
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;! s& u4 s" B+ A# q0 o$ R
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;% y4 n, a, y; n# p6 o+ S' c3 |
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static int acnt = 512;( T2 Y2 L* W- l
static int bcnt = 8;+ q" N" W* n' e" H
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