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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/*8 w3 t4 L! n2 ]( ]; p% u, [+ f
* edma_test.c
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*$ N/ Q# {9 I3 i7 g" h
* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.
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*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE c3 {' _4 H) a3 v1 k
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT ~7 g' J4 f, M" I+ l- _4 e) ]
* TO CHANGE.4 A$ s3 }, O3 g5 p
*
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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/or; F9 A$ v1 A& d4 v+ t
* modify it under the terms of the GNU General Public License as2 B8 k1 T9 A1 X) E$ Y* u1 M6 O
* 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 warranty5 p/ ? n+ C4 n
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/init.h>5 c/ m9 j! y! R @" O" O7 c& |
#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>; i# B. U3 _% _- S! M, y4 B
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>: j: `' E3 ?4 b4 r" c: c& d7 m# I
#include <linux/mm.h>3 z3 Y/ ^, }, U0 t$ \# Y) b, z1 ]
#include <linux/dma-mapping.h>
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#include <mach/memory.h>: F$ q# V2 v) y
#include <mach/hardware.h>9 l# {/ e3 ]7 X
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>0 w" {- D7 f/ Q) `$ J. V$ w
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#undef EDMA3_DEBUG7 Z, D4 w7 u: M5 ]9 [& O
/*#define EDMA3_DEBUG*/7 H# J/ o3 o0 }. P- x( V
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)0 B- \; ~: n* b2 P3 S' m! [
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)/ _+ s7 G2 a* I. T+ q
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)$ B/ y# W& A& T: V% K6 s
#else
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#define DMA_PRINTK( x... )0 a7 n" i& `, |' }
#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif% f: M6 X4 L2 W' ^( d
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)3 L2 z) l" `0 b8 n2 M; M8 t
#define STATIC_SHIFT 36 j% }$ A) l5 i
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22( m/ x7 E1 E2 N
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;. X8 _0 d3 M+ X ?5 u3 @
static volatile int irqraised2 = 0;1 y# D1 v2 w0 V
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);! J- o; K6 V2 J9 ^
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);# ]0 f+ y3 {. B& h7 _- z$ n
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;) t# A' W& I# d) M# D* S- c3 ^
dma_addr_t dmaphysdest1 = 0;/ J6 F8 u% R4 G7 g
dma_addr_t dmaphysdest2 = 0;, ]$ @, Y1 b0 i% g
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char *dmabufsrc1 = NULL;1 X9 H. R7 C/ D2 E. Y' y( _
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;! Y$ ]0 c5 K6 j/ h$ Q$ C
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static int acnt = 512;, t% l, j$ E' |: g5 S
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);- `/ W' d0 g8 X3 v7 G' I5 g# e6 p8 F
module_param(bcnt, int, S_IRUGO);) w J B8 b* P; y% `
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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