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* @2 R# x5 O" K' H
/*" b; w+ B( X. k# V+ \2 e( T
* edma_test.c3 o4 `0 ?$ {' D
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.) s ~: d" J+ Z+ ~
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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
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* TO CHANGE.7 k& E/ h" a7 q, a. W+ f; Y
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/8 Y, I' ~ E2 v) T5 V
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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 as8 B: ^& W5 n0 o/ U
* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the8 G: o6 I! I p w
* GNU General Public License for more details.
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*/
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#include <linux/module.h>1 h: ]7 M5 B- x1 \
#include <linux/init.h>1 _4 i) C, s9 R) y, }7 p7 \3 C
#include <linux/errno.h>! D3 a5 |; v4 B) ^ j2 v; q. l5 Y
#include <linux/types.h>( Q- S" }+ F: V8 w. g
#include <linux/interrupt.h>
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#include <asm/io.h>3 N. p1 j* L" |( K; l
#include <linux/moduleparam.h>0 _& l; L+ t, |: x5 g7 n* O# f
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>+ _8 D% O3 t# J6 S i
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#include <mach/memory.h>
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#include <mach/hardware.h>) V3 Y2 R: k0 H& w
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>+ s+ R8 `$ t2 u1 M7 P( R% R
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/) c* T$ g1 }. _) C+ L* o# ~' F$ h
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#ifdef EDMA3_DEBUG3 _8 E4 S( a7 n& |
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS); P6 k; Q- m. S$ f0 O
#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__)" B! E+ A5 A/ G2 T
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif" J2 C9 V7 F) F4 B' o4 T& ^4 {3 l+ H
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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. R4 t9 Y' A/ g* d
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 225 t2 B; Z2 m J" b1 m. I7 Y/ M) k, P
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;7 ]( H Z* m; p/ j) 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);( M# p8 u( p' g% p% T M
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue); w% q+ l: h! z& r
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! r" Y/ K/ p8 ?4 K3 _) o2 k
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;# n9 a: C; q" B1 K* Y& E# C
dma_addr_t dmaphysdest2 = 0;: @% W; J9 @2 M0 \
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char *dmabufsrc1 = NULL;! X6 u5 C+ b& Z+ ]- {
char *dmabufsrc2 = NULL;& L; n6 {- X7 T* T3 h+ H
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;" i3 T" M# M9 U$ K1 o j
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static int acnt = 512;6 m4 T" D: K. N) y- p. K% p
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);
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