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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/*5 m5 T- S: D5 Q3 d
* edma_test.c
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*
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* brief EDMA3 Test Application1 O& o5 A/ o2 I6 V
*
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* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE0 g0 Q K4 D2 x0 R) h8 O9 t5 v$ m
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.8 S7 R; S" c, ]5 l
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/$ [8 {$ @8 a0 Y, P& ~# `6 l2 N# C
*
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* This program is free software; you can redistribute it and/or9 Q( \& Y; v5 N" [% d$ v
* 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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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any& D1 G5 g% |4 q e) W" F
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the8 L5 V% p$ S1 r# ?, q
* GNU General Public License for more details.6 |7 b8 e7 D9 T! g7 W
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#include <linux/module.h>
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#include <linux/init.h> c, G' d$ b" g0 S# a& y
#include <linux/errno.h>
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#include <linux/types.h>3 h$ n( r$ z( P: Y4 I
#include <linux/interrupt.h>1 o! d) h3 x" W* }
#include <asm/io.h>
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#include <linux/moduleparam.h>8 ^7 m# t( {% ]3 v) P+ L1 c9 k
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>% z! [: z4 v! ?4 n4 T
#include <mach/hardware.h>3 [% i- l7 Z" `6 \! V
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>) M8 F# V3 c" p" v0 K( b+ G
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#undef EDMA3_DEBUG, Q" M: D4 z3 R$ S" u8 q4 Y: x) A
/*#define EDMA3_DEBUG*/) m: ^8 ^- a9 R$ k0 i; O* }# A
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#ifdef EDMA3_DEBUG, N' k+ ^/ h2 ~
#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__)) ? S# @' R* [% }) w {( }' x* z
#else
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#define DMA_PRINTK( x... )0 K( U+ d! D: `/ k. ^: e; |
#define DMA_FN_IN
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#define DMA_FN_OUT. l0 ?6 m+ B1 {5 ^0 L, Y5 t
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)( S2 T' }9 p; x& H7 `: {; V( q
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 203 a* r, _4 ~' Z( o- f. J% K
#define ITCINTEN_SHIFT 21. Z- i( M/ x+ j3 `2 c3 }, }
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 239 b C" }" G, \! c7 z1 z: T, R
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;! w/ L: j8 k0 {" X" b Z+ r
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);9 y7 o2 i. z) z4 v
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);8 H0 k+ q: ~5 f) ^
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 Y! X+ d5 @9 m& u' R& u, Q$ Q; k9 n3 G
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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;6 Q2 f) _8 R9 I+ X9 n9 x: ^
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;) c& ]# @( x& B/ `; u$ E! p
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL; B. v! C4 Z: \- y
char *dmabufdest2 = NULL;# `% Z' V( L4 @1 o2 \# y
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static int acnt = 512;
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static int bcnt = 8;" M8 ~9 f' W) L9 F# l; F- b" x" |
static int ccnt = 8;' f0 _1 u! u6 O9 U' Z
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module_param(acnt, int, S_IRUGO);8 H. ?3 s5 f/ v/ \5 a
module_param(bcnt, int, S_IRUGO);! d6 ~9 r& Z4 x1 x; s
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