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- s6 X4 s! g0 v
/*7 ?. \$ r+ O# M1 b3 a+ m
* edma_test.c6 t9 |& T2 t3 L" k" P8 L' b& L4 j
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* brief EDMA3 Test Application; |9 z; e. K" L7 W
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* This file contains EDMA3 Test code.
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*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE% ]# E E2 `" s2 L4 { Y( m- ]
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT: w; p( S' ~+ w
* TO CHANGE.3 Z1 S6 l4 ~$ G$ M
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/8 N* ^6 P( F- Y O! b: [ {
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* This program is free software; you can redistribute it and/or& ^& p$ ~6 l2 c e0 v% Y+ e: X8 h
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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*( `; `" Y. @1 y3 C
* 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 the
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* GNU General Public License for more details.
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*/4 D3 D r4 q5 c/ R$ a1 h/ Y( t
#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>7 r& B( T) G" \9 X
#include <asm/io.h>3 l: F" b, v/ n# {5 l
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>/ m# r/ `4 z# t
#include <linux/dma-mapping.h>1 \8 s$ Y5 J4 s
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#include <mach/memory.h>
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#include <mach/hardware.h>
#include <mach/irqs.h>% C8 D/ }; W8 Y/ b; V! d! y) d
#include <asm/hardware/edma.h> h0 A, g6 \; v# H9 M+ s# Z
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#undef EDMA3_DEBUG/ U2 G1 |6 V; g* }* o; g
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG# _1 e' C1 s p- R
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
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#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... )4 m# f8 d, Q2 ^( ^
#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)2 s" N/ o$ H: ~) ^* {
#define STATIC_SHIFT 3' o" k7 O ^2 O$ u
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 214 {/ z$ b1 I! \3 R- p% v
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23" V/ m, E$ i- F
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static volatile int irqraised1 = 0;$ a; v: i8 C! L4 K* M6 q
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);; l- f( Y) [& p0 l
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0; Z! o2 W* E* }3 ^
dma_addr_t dmaphysdest1 = 0; Q4 m3 J& T* b. y! q, t' u* d
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;: L" G% w# |& d
char *dmabufsrc2 = NULL;2 Q9 D6 }" Q, B6 |0 i; X3 p+ k2 z
char *dmabufdest1 = NULL;6 N3 P" k3 m4 [! x, |$ H2 M5 O
char *dmabufdest2 = NULL;" T3 H; ^* j' T* ?, {3 V4 R
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static int acnt = 512;
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static int bcnt = 8;6 s$ \) O! k. t( I
static int ccnt = 8;# ^7 h4 A3 L0 I& R' h4 I- V
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO); c# Y. G5 y, m0 t
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