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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/*1 _5 N8 X, |3 ?, o; _' [8 p
* edma_test.c4 \: V8 }7 |* j& k0 V/ ]$ g
*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.2 F. r, u# ^+ G5 M
*
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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.8 s# ~6 u9 h3 V' P1 V8 V/ p2 V
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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/or8 a- T% e0 t) \' I( \
* 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
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* kind, whether express or implied; without even the implied warranty, _ \; _- E% ^6 _0 m3 w
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the6 F3 L# k. p, Z5 p, r* S0 J
* GNU General Public License for more details.! A1 J6 @/ T3 E y* N+ ]" f
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#include <linux/module.h># E* b3 u( i* Z1 p& B! o% h
#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>
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#include <asm/io.h>/ i6 t" v- y, d5 T# O/ k8 q
#include <linux/moduleparam.h> @; V- Z/ _" b: b" R* P3 s+ i! B
#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> x# h8 \6 M0 O l9 w
#include <mach/hardware.h>
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#include <mach/irqs.h>2 q. Y$ s5 I! a3 v/ r
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/* x. X1 n( y6 V0 S
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#ifdef EDMA3_DEBUG9 ?, c8 H* N3 v
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)3 C( e% \) u3 u9 d, H' Y- n
#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__)) }' y M: q& V9 C/ Q2 E( y8 M0 g
#else) V1 b( h2 i2 M& K3 r, F2 J h
#define DMA_PRINTK( x... )3 v0 ?& d3 }1 ]* G9 E" l
#define DMA_FN_IN4 n c4 W4 I: N! r+ E
#define DMA_FN_OUT2 M# K- J9 G* O! u6 i: p
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768). O* t7 Z6 b0 G/ \2 u8 I% @
#define STATIC_SHIFT 34 D+ v- V" a1 C6 l, X9 W7 z! L
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22+ W' o5 j& F, S* C% L
#define ITCCHEN_SHIFT 238 d2 h; G7 c! }& {
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static volatile int irqraised1 = 0;1 I" k' V. X8 `+ C' c; t) u# j: T
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);/ o# p3 r7 T& B
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);- Q, {6 n, @- t: ~
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;# N9 A0 L* k1 E. u5 I( ^1 M* ^, r
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;2 v- o: O; [2 G& s' b. H
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char *dmabufsrc1 = NULL;# T1 g& z, X* U1 f% M
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;' y" [) ?+ y* N
char *dmabufdest2 = NULL;
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static int acnt = 512;9 L0 K- U U4 G
static int bcnt = 8;& n; q/ r' T* @' \" ]
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);; m; s' E/ U' n3 Y: b8 u
module_param(bcnt, int, S_IRUGO);& a7 x" m* v& h! ~5 u4 u6 ^( f
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