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 application6 e; R- Y6 h( N! f
/*
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* edma_test.c
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** R8 s$ P5 v5 K& d% R4 q& L6 B
* brief EDMA3 Test Application* e; s- K* G* c w9 \3 G
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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
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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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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.: e5 T7 N7 _" o! L
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any: J% B9 Y4 B, r
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the( m% s0 t2 y7 c+ c8 w3 C
* 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>, v, ]5 i S3 V
#include <linux/errno.h>2 z y0 D" @% D% `0 c$ R) E. t
#include <linux/types.h>
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#include <linux/interrupt.h>9 d; J6 N1 ^0 k) Y1 r0 a% B
#include <asm/io.h>
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#include <linux/moduleparam.h>) q+ u4 a7 s" U d2 v) z( \
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>; k/ X) x5 @) I% |; k+ m0 T- h8 d0 \
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h># v5 T; C8 ^6 |! P) B+ G
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG/ [5 G+ c) R4 Q/ t& j1 q
/*#define EDMA3_DEBUG*/9 |0 O t+ v( d# b" Z9 O
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS), _ ~6 m; c) s/ A0 h
#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$ R! D; D6 n D7 o
#else9 S7 Z) Y6 [' n) v
#define DMA_PRINTK( x... )5 t5 Q, F9 V+ E& w$ s& R8 x
#define DMA_FN_IN' ^4 _8 W3 J; a; ~9 Y( ~5 o
#define DMA_FN_OUT; i& D* W! s: _4 e/ X" r. }
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)0 P5 K- b7 ^) d" |
#define STATIC_SHIFT 3+ a, }2 L/ e% B
#define TCINTEN_SHIFT 20- v+ o- \5 U r) h0 m
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;$ e* Z: P. {$ m' \6 a0 k& c
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);" y/ i- t, E1 F# j3 `
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);; U J+ ^% H1 Z5 N, |, i# _
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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;9 F; I- m6 y- U: j5 s9 p- Z! k& S
dma_addr_t dmaphysdest2 = 0;8 R. }+ l# R# d- V
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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;$ a9 a6 _: }! Q8 v2 }8 z
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static int acnt = 512;8 p( a1 B$ r+ ]0 w1 Z/ ~6 j
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);) s2 c# u9 D9 `
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