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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/*
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* edma_test.c6 K3 f6 T' y% [$ s1 p) f2 R0 v. o
*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.. |& O) w# n8 v$ m9 _
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE9 h% Z$ |& t- ~% S+ k, M& a( X
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT' h2 O, Y8 f) e/ C, D7 m" t
* TO CHANGE.& Z/ Q; A$ c" e1 p7 T
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/ T( e( ?, Q+ o& L
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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.$ Y/ h. E$ `" s! [$ R3 h
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any$ _# g) Q& E3 V p5 d
* kind, whether express or implied; without even the implied warranty/ j5 a5 J; n- O+ f% h7 P/ q
* 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>5 z5 ^2 {0 ]/ d7 v1 [5 M: j, ]
#include <linux/init.h>
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#include <linux/errno.h> R8 P( t1 j5 J
#include <linux/types.h>; l+ x% z S5 Y3 n1 D4 _: q! V. X2 f
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>; A {/ G9 }2 H3 r3 _) s
#include <linux/sysctl.h>: d3 j8 w2 O" _* s
#include <linux/mm.h>5 {9 U0 `( y7 `' s! k
#include <linux/dma-mapping.h>7 W- g% i& K& j2 ^* s6 E/ v3 o' n @
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#include <mach/memory.h>
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#include <mach/hardware.h>0 V+ k! q3 M6 m0 E9 d
#include <mach/irqs.h>1 q7 N( [/ u, g( }! _
#include <asm/hardware/edma.h>" {( t; g+ |* r' @% V
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#undef EDMA3_DEBUG- n7 Z! d" T' J4 V& L3 \) U
/*#define EDMA3_DEBUG*/3 R2 R: Z, L6 _4 I
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#ifdef EDMA3_DEBUG
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#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__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)$ j) z0 e; v1 M5 `, O; l/ [
#else2 L/ j5 }* }9 U" u& w
#define DMA_PRINTK( x... )7 ~9 O# b4 N: A" N+ y1 p3 B7 m
#define DMA_FN_IN7 o% h2 f* S. W6 k% u
#define DMA_FN_OUT9 Y9 W" U- L/ {7 P. h" P: o( x( E/ P
#endif: M# H. t- z5 m
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 32 q9 ~ q0 M, v" n% d; b: g
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 211 l- x8 g% k- O7 M+ t: f( d
#define TCCHEN_SHIFT 222 i6 ]& R ~! |% r9 G
#define ITCCHEN_SHIFT 236 F! r! k0 @2 L C
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 N& q" X' C; x6 ~
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);( T6 J S5 L, t
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);0 ^8 G( _5 [. ]+ d; `) g* h) s
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dma_addr_t dmaphyssrc1 = 0;+ f3 G0 W* Y# S" P3 j/ B1 b& U
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;2 ~: ?7 L2 [# H4 @1 t) ~/ i5 M
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;& }" H/ v% B8 x; c2 A2 h
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static int acnt = 512;
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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);
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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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