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! X( v+ V' D3 ~7 T0 r
/*
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* edma_test.c; r s+ Z5 M6 O! z
*
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* brief EDMA3 Test Application+ q) I6 u: P6 u9 A. f
*/ n5 m" F! |4 P% t- x/ k* U0 p
* This file contains EDMA3 Test code.; v8 S/ w) N, }: i% {6 o% Q4 `
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE$ N, S0 \, v& }: }2 s. D. T
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT9 u% a5 [8 p7 A5 T8 c- l
* TO CHANGE.7 C& Y6 c. p: u: e( ]; T5 A! Z
* U/ K2 \% M/ b% b+ h, o
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/0 `4 `5 }! A" u7 }5 V
*
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* This program is free software; you can redistribute it and/or( ]( \/ n9 p( E' |2 g, l: E" t6 F W8 ~
* modify it under the terms of the GNU General Public License as5 T! O. x/ H* A" h7 r
* published by the Free Software Foundation version 2.
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*1 A9 W+ l3 ^/ M/ ~+ @& L% |7 F
* This program is distributed "as is" WITHOUT ANY WARRANTY of any6 q4 Y0 X! Q( T1 @ c
* kind, whether express or implied; without even the implied warranty- [' a5 n9 Z2 C$ A* C$ X
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the. Y3 F: G; c- q* S8 l$ m
* GNU General Public License for more details./ U0 b" Q; a! v
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#include <linux/module.h>
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#include <linux/init.h># ~( ?0 o, F( t h) m
#include <linux/errno.h>+ x" ?( C& f3 E4 t; S& x/ z. u
#include <linux/types.h>
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#include <linux/interrupt.h>4 \" \" T4 i, H& R
#include <asm/io.h>, q8 Q/ F, { [2 _9 ?, B x
#include <linux/moduleparam.h>: o- }+ r: o$ u( e3 [+ L
#include <linux/sysctl.h>. ]# R, S% T/ m8 t7 w0 E4 d9 F; B, p
#include <linux/mm.h> s; s& J' u, C. _0 b. ?* a" w$ ^
#include <linux/dma-mapping.h>6 T( Y/ }1 [+ d7 j2 N
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>) j% q/ U, B* R: D. u2 v8 q" Y9 f
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/. B4 q& f. T) n) F) H a4 G; j
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#ifdef EDMA3_DEBUG4 q9 \! \( B/ p" l2 H3 A
#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__)# ~# J% P0 v1 M& P1 O6 m- S8 M) _8 I
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else/ ^ y6 A7 N& @* C4 V
#define DMA_PRINTK( x... )8 p X1 w5 L9 e
#define DMA_FN_IN8 o, x( F [) c( ^# Q# j) z$ Y
#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: S. w+ g) q! w. r
#define TCINTEN_SHIFT 205 m! X, a+ j$ X7 q9 ?8 Z
#define ITCINTEN_SHIFT 219 |" D$ g! X# V0 W
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23; T- F2 H) w; ^
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;9 x/ m$ n7 P0 t6 r$ I) `8 l$ d; I0 l n
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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);
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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;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;# U% V2 l* v4 V0 Y& D- _' V# C
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;3 n) q: X! C( L( n" Q) j
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static int acnt = 512;' O/ S' E4 S3 w' b9 [6 G. H
static int bcnt = 8;- q; Y1 f: F9 T
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