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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/*3 ^1 y$ z( C0 a
* edma_test.c
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.( I* b- ^" [0 M& l. i
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE9 P# N6 ]8 P% r4 V# A. G
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT* O* d' D c5 R
* TO CHANGE.
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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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 as0 V9 r$ D6 m: p; t$ n/ Z
* published by the Free Software Foundation version 2.5 }% F8 c; G0 V! Q/ m
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any7 R) s$ p4 t: t+ N
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.- ~6 r4 {+ o$ i( g% S% S2 p. D
*/
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#include <linux/module.h>. g7 d# u' C+ c, ]9 E$ w% ^* [% q
#include <linux/init.h>$ o/ Y/ p' X& C6 w8 e
#include <linux/errno.h>- X& q6 `+ D5 B& g9 C/ P
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h># S& v- D8 T. H- ?/ ~
#include <linux/moduleparam.h>0 t" w5 w6 T9 q# F
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>. H6 g- l% `' e8 i/ a
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h> w {& `& u( x! U: f
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#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)3 k3 h+ P5 |; W
#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__)% V- X5 x6 }" a
#else. Q/ I% [9 i$ D
#define DMA_PRINTK( x... )5 I4 X) e9 p1 [; h
#define DMA_FN_IN
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#define DMA_FN_OUT0 B, Q" v& m P+ L* Y5 P0 K m+ }1 i
#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$ h, ]# P' ?" N1 p4 m
#define ITCINTEN_SHIFT 21; u! X& G2 }1 L' d3 ]1 P) e/ Z& j
#define TCCHEN_SHIFT 22& [$ P( Q: s$ u# q; `+ L
#define ITCCHEN_SHIFT 234 r" X! }- i) K( M1 s3 b) ^1 y9 }
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static volatile int irqraised1 = 0;$ H0 s/ R9 t% x
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);
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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);; b5 R! p9 t9 d% C H
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;0 t: o9 A& M2 y* `* q
dma_addr_t dmaphysdest1 = 0;* x" `$ T5 b( t: M) ^
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;: T1 B1 f d, g3 A1 H8 ~7 a! G W
char *dmabufsrc2 = NULL;4 x: l6 q% A8 I2 j0 X2 X
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;! H' C+ D9 x( \/ R
static int bcnt = 8;
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static int ccnt = 8;$ y9 [% R0 ~% g% b2 F' K4 w
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module_param(acnt, int, S_IRUGO);6 g5 j. z, j/ h1 C
module_param(bcnt, int, S_IRUGO);' X+ R: P7 F3 {1 N! |! k2 y
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