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 application3 x J5 x; }0 I! A" L/ B6 T
/*
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* edma_test.c3 S, E2 Y% {. f
*
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.
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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/ }6 Q+ ^& t$ I' B, n
* TO CHANGE.5 d' w0 _3 W2 L9 g
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/5 g; V* k4 }+ _/ ^1 h, D; D. u2 D4 V
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* This program is free software; you can redistribute it and/or( Q; {" @! a1 n) @- ~# }' h
* modify it under the terms of the GNU General Public License as/ ]$ M, [; J. f5 z' M) S6 z
* published by the Free Software Foundation version 2.7 H7 ~! l; p8 I, ~5 Y
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any4 i. F9 n% ]5 i% T0 }! `
* kind, whether express or implied; without even the implied warranty, Z8 o% @ L5 \ j# Q* E! X
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the( b4 i) i- z% ^
* GNU General Public License for more details.. {' X. l5 h; z' ~9 ?8 \' @! z! o
*/
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#include <linux/module.h>: S$ ]! F4 h" {
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>6 t! {- t4 W" g. [5 I
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>) N2 z* h# y' q2 Q$ c- q3 g) E
#include <linux/sysctl.h>
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#include <linux/mm.h>; C" b0 k/ q1 T! J1 ?; a
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>9 m0 G! t* D, K. T. V9 M# }1 ~
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG4 d* n/ v9 _+ ]4 S% F x
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS): r& ]4 W/ O! q' L8 [! ^
#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( @8 N' Q9 s! S- W
#define DMA_PRINTK( x... ), m( K8 m1 o8 ^
#define DMA_FN_IN6 o1 a) [% n. p- ?$ h1 i& h. R
#define DMA_FN_OUT) P+ w! Q! t7 y5 z
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21( u$ B! M3 b) Z) t3 e
#define TCCHEN_SHIFT 22/ h( v) u* v0 q& u4 J M9 H
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;) z; i8 z4 k8 `& 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);& m" b; M0 G: N s/ J: ^/ {& }- ~
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;
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char *dmabufsrc1 = NULL;: s& Y$ P# o% O9 j4 V" d- l
char *dmabufsrc2 = NULL;5 a2 r! L4 D, S2 W4 |
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;7 O/ l. _* C8 t0 Q7 Z
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static int acnt = 512;3 q6 X# C# K" u' y( J+ S5 |
static int bcnt = 8;5 v& a# U# W# w/ J, O: r2 ^1 T2 x
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);7 x" m: d% W+ ~: y# ]2 w
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