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.c
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*% B5 T1 M2 {( h' d7 n
* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.+ ^/ g% w3 D1 t8 V
*
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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 SUBJECT9 M& D9 h. g( L% K' l
* TO CHANGE.: p7 F' z# B* U; [2 ^( p; t' ?8 x2 g* y8 ^0 Z
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/$ e) M, o. E4 g3 t' H
*
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* This program is free software; you can redistribute it and/or" |, k5 [9 Z) z3 A6 F; Z
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.* j3 w; K/ N) I0 ?# v, ]2 B) C
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any7 F. Q. l* ]( N) i& X8 @
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the1 s. x) i/ n, r- |: O5 u- U
* GNU General Public License for more details.- A; Q/ } U$ Q/ D3 H0 U
*/
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#include <linux/module.h>6 m! F. I9 D* O9 e' a. Z6 @
#include <linux/init.h>
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#include <linux/errno.h>% |& ^8 b8 G2 B8 v
#include <linux/types.h>$ g" Q, Q J4 z; q9 I
#include <linux/interrupt.h>( K% ~) d( B9 C" a) p8 e9 \, Y
#include <asm/io.h>9 S9 H- n% z f/ g% f$ l$ k: D
#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>1 B! c/ N% D" _
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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 \) A/ M: F; i0 ]9 Z4 c$ t8 |0 O
#include <asm/hardware/edma.h>& M0 |9 z# k0 D0 `+ W( p: ]
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG/ V- H1 D: W$ s1 ?) B% s( f" E5 j
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS) k8 m& l) E( A' |/ v) }/ X/ y( R
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)8 X& b$ u9 D$ } @ i3 }0 U. P1 V
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )! Z0 \$ N9 L# g' L/ H7 g+ ~
#define DMA_FN_IN0 o4 h( Z9 p: Y6 h7 n
#define DMA_FN_OUT
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#endif* P% u. O* K0 Z( N( S+ N
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)+ z9 b. c- y( q' D
#define STATIC_SHIFT 33 _, z) O9 r. x6 T
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22, a1 Q$ j; h. h1 `0 W; f
#define ITCCHEN_SHIFT 23/ I4 O, D \; l+ s$ K* m- i
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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); b2 ?0 K8 D" V& x( G
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);
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dma_addr_t dmaphyssrc1 = 0;# Z- M9 \; {0 ?+ ]0 S' G$ j
dma_addr_t dmaphyssrc2 = 0; L( k) @; T* M% g/ A
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;4 T7 k6 M( u( p$ q( H
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;: L7 g; Z1 _7 v& z3 @
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;, T* M' I% v) o& P7 n6 S; T
static int bcnt = 8;
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static int ccnt = 8;1 N$ Z$ H- [4 O/ z) {7 D
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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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