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, r/ g7 v7 h8 t: a
/*7 r8 ^0 {' F' A5 y) ]" g; k9 {
* edma_test.c
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* brief EDMA3 Test Application [4 u5 @8 N u0 H
*
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* This file contains EDMA3 Test code.% k1 O( Q6 }9 G8 K7 `& p
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE' H4 p: x9 L. g
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT2 n5 r/ V* x; m/ `& }3 ], B/ `
* TO CHANGE.
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/3 t+ A m$ c+ [3 i6 ?1 f- }
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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: D2 {" S. O; ~( k! o5 {
* published by the Free Software Foundation version 2.; N- w& ~# H6 _; q# M+ p Y/ t6 @
*; v. d: R' |) d J v i* b7 i
* This program is distributed "as is" WITHOUT ANY WARRANTY of any7 e* u) _; g H7 n7 |) G& n
* kind, whether express or implied; without even the implied warranty0 R, c" y0 U2 M/ v9 F O, g: p& j
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the) C' A S+ c4 ?5 U+ N! u
* GNU General Public License for more details.+ J. o& p7 L5 q! ?! q/ K6 e# _
*/
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#include <linux/module.h>
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#include <linux/init.h>8 m# j- N( W# T) V+ Z% V9 _
#include <linux/errno.h> O' `# t7 d2 X v+ ]- c
#include <linux/types.h>$ _) T+ f: \7 e4 `7 a
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>, i7 Z! K1 P* g- f0 v
#include <mach/hardware.h>' h7 M) K: l4 f
#include <mach/irqs.h>8 {8 C6 \8 j% _5 j" X1 M
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/* s9 l; D2 n. T' X. `# A' _, q$ E
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)9 j0 Q' M7 k3 w. x- X1 o( X1 n
#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__)
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#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN' B! @8 ]. X4 Y4 Q8 p% V, D
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)" j* t* ~" m$ f, h1 u( g- t; C
#define STATIC_SHIFT 30 t7 G1 W7 M, x" j
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21- y, X0 g9 h" E5 E- i
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23( n' |6 u C9 w0 g ]
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static volatile int irqraised1 = 0;5 l& z. l7 |8 f' i1 j7 n3 m
static volatile int irqraised2 = 0;8 w+ V! L9 r5 T9 ?& o+ W3 e
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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);* a: T d# ^: q8 m4 o8 d% M$ 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;
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dma_addr_t dmaphysdest1 = 0;+ a& C7 U# s3 R7 G0 K/ x# c# ~/ c
dma_addr_t dmaphysdest2 = 0;# }. g h9 m! _0 s, Z
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char *dmabufsrc1 = NULL;5 W& z/ M: G1 }& [ K& }1 E9 O8 x
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;! y0 o7 z7 i- v9 g) d/ Q
static int bcnt = 8;1 F4 |" P2 p8 }# t8 D: r9 R3 _' j
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