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" q' ~( N$ {+ \. ^: m3 Y
/*
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* edma_test.c
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.4 j. p E# m' X2 m- j0 @
*
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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 S- R, a1 w+ V1 J* M7 O+ w
* TO CHANGE.9 b1 o* g# `0 }) P" c% d# B+ D
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/5 @) @$ j. N V C/ G3 ^
*
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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 as1 q; V# f: c6 y7 k
* 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 the! b! n- M D1 Y S+ J
* GNU General Public License for more details.
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*/
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#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>6 f$ s* h8 E2 F/ E! [
#include <linux/interrupt.h>5 n# h! T8 W& _! U
#include <asm/io.h>' F7 l0 F+ K. [
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>* {& } o2 F4 m% X) H
#include <linux/dma-mapping.h>
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#include <mach/memory.h>! K! M3 w% }2 r( ?, x' L, w
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>- T2 X0 W; _2 N' u
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#undef EDMA3_DEBUG9 N( I' H. ?0 O* Q2 x- L/ P8 _5 o
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG3 M3 { U: g+ D- {- @: i: U
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS): r6 c+ e4 i, J$ i
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)* }& I2 g/ y9 [& b0 D6 `1 `- [
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )+ F3 h% q9 P4 b6 v
#define DMA_FN_IN0 d4 b; G m) _5 _% C& |$ B' a
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)& q3 h% O6 K$ }- k' y2 D ~
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20; _7 P) ?! a# B
#define ITCINTEN_SHIFT 21! ^8 [7 D1 b) Z5 J! ~$ N' q
#define TCCHEN_SHIFT 221 k m T9 r6 \1 F- g6 ~) E% A4 j
#define ITCCHEN_SHIFT 23; o6 r7 m7 y# ]& @1 M% i2 `
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static volatile int irqraised1 = 0;: u# K3 R0 u( K1 j& ~% e
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);5 y$ |/ k* V; z& D0 i. r! r
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);0 G; U; P3 w8 |
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;1 C# T/ r: s! w2 h' A! m: f1 N6 V* e
dma_addr_t dmaphyssrc2 = 0;8 ~: E. \% c! d8 v2 M
dma_addr_t dmaphysdest1 = 0;& C- @6 \& T% t* T2 U1 R
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;! C: @! u- x U* d4 t( L( q
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;/ n3 r5 a, F' B9 R$ G
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static int acnt = 512;
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static int bcnt = 8;3 N7 S# w- p' Q" U% D+ v; p) R
static int ccnt = 8;, @" S% w! T& P% p/ ?& }4 p
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module_param(acnt, int, S_IRUGO);+ q5 S- K' Z0 j8 j, A& A8 _
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