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 application9 T4 X$ m! \5 B& f( x
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* edma_test.c
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* brief EDMA3 Test Application U6 x$ D* w0 P( R4 s
*
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* This file contains EDMA3 Test code.% Z8 _5 ~9 W2 J# y6 k3 O
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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.
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*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/! o! U2 {7 {1 d' l
*
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* This program is free software; you can redistribute it and/or) a, |9 l1 x; O% {) _# C n }
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.: F( r' F/ ~7 n
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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
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the$ s: d& t. U8 L9 o
* GNU General Public License for more details.$ e* V/ r9 m# @9 `
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#include <linux/module.h>
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#include <linux/init.h>4 T- u6 o) @) s7 e# K/ J2 v; C
#include <linux/errno.h>
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#include <linux/types.h>" H- f& D: Y) s( r* _1 T2 E0 n# }5 R, w
#include <linux/interrupt.h>
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#include <asm/io.h>, r- U. X1 S( I6 Z+ K% K5 N1 k
#include <linux/moduleparam.h>( W8 s$ G3 F2 j+ o z& C
#include <linux/sysctl.h>
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#include <linux/mm.h>8 p& |: m2 _; H- L! D
#include <linux/dma-mapping.h>
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#include <mach/memory.h>. N1 H7 O5 h Z& R/ I6 q
#include <mach/hardware.h>8 B" O# H" H0 W; a0 ?
#include <mach/irqs.h>" m1 u+ S" @2 t$ ?4 F6 R
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG# ~" q g3 O7 N$ l( j* D5 N
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG3 n- G' \" @0 @
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS); H; e3 C2 T. h& v
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)# J! G7 v2 U& a7 K* W9 O; ^, \
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)% |' b9 d0 |! b/ f) { `4 ?- M6 t7 M
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif/ G( l% |& b& }" w
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)9 c5 {. G' m. z" O
#define STATIC_SHIFT 3) z+ U% S. \6 R- L0 w* m$ ], @1 D: ^
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23; r, G6 r: C6 v2 \# M
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static volatile int irqraised1 = 0; q- R- a; m- M k- f& N
static volatile int irqraised2 = 0;) t; U6 `" A1 @7 G
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue); _6 S @+ K# ^0 ^, \
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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;' p0 e& W N3 t5 E4 \* ]- A$ M2 @
dma_addr_t dmaphysdest2 = 0;
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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;# U5 C6 x$ @% X
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static int acnt = 512;% {% r) g5 z$ m6 B
static int bcnt = 8;
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static int ccnt = 8;( ]0 q( _ R C& }# K: _# o
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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