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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/*+ L5 \# y" z$ T3 M
* edma_test.c
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*) P; H. Y- M$ t$ q" p
* brief EDMA3 Test Application6 U' U$ Q- ?2 m. \ Q
*
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* This file contains EDMA3 Test code.1 J3 u9 M. Y$ g5 ?" {% [! 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 SUBJECT! V0 r( s9 M; d
* TO CHANGE.6 V( r N5 g; |1 J* n5 e( s
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*- S8 e. O) P) ^- A# p8 S
* This program is free software; you can redistribute it and/or( k6 C8 x3 P1 l, W0 ~& K
* modify it under the terms of the GNU General Public License as7 l, h4 U4 G6 T5 z7 ^" n' D i
* published by the Free Software Foundation version 2.% ^% g4 C" r) X9 ? L' t/ W
*$ ~% U8 r+ F! C, D
* This program is distributed "as is" WITHOUT ANY WARRANTY of any2 E) p5 F, f8 _9 ^" w ]
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.. F! y; k4 I5 P8 f7 _6 g9 f
*/
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#include <linux/module.h>
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#include <linux/init.h>2 j, ]* F; [) L# S
#include <linux/errno.h>8 R" Z: _8 P! Y4 E3 s; F
#include <linux/types.h>& ]+ B3 V7 q( b, R. A' {, r
#include <linux/interrupt.h>! R6 D4 y3 Y% O; S
#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>2 o5 K3 a) B% ~
#include <linux/mm.h>! ~! y+ {& G _2 a5 [# D E' r
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>* b0 {% L% w7 a0 v# J, N2 F5 z; ]* w% ?
#include <mach/irqs.h>* |0 v* f, S8 F9 m0 t
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG) N1 g8 ]4 j$ m, I
/*#define EDMA3_DEBUG*/" q+ L3 c( M2 P4 t+ J9 q. e& C
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)- t- D9 M. F+ E. M% ]
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)7 U; [/ l2 W) b2 G% G/ l) V: l0 y
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else+ t& u" M5 A. l- E: B/ E' K+ J9 f- Q
#define DMA_PRINTK( x... )
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#define DMA_FN_IN6 h3 j4 }! p; Q _/ c J$ @" C
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3+ W& c! f; J% S/ m
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 225 Z' A# H$ L" ?6 `; \' H* Y
#define ITCCHEN_SHIFT 23# f, r9 r- i" Y; i- m. M$ S4 i
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static volatile int irqraised1 = 0; A7 M: M* U3 C( D4 H
static volatile int irqraised2 = 0;" M0 ~% l- l6 e) V
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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);" t/ [, w4 Z! P- P2 Q2 I6 W) Y
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 e5 i' y0 t6 y6 m6 l4 p* a( f
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;, O7 X+ v2 b9 z; _: Q, Y# P
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;9 m( k4 h1 ]( s' @7 _1 @; ^
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;4 X6 ]0 O( c3 q* E- @6 J
static int bcnt = 8;
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static int ccnt = 8;) o5 h4 y+ w6 ]; k4 r) r
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);( z4 G% z7 \- T _4 ^, g
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