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.c2 s1 y$ R! |- u
*
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* brief EDMA3 Test Application/ e2 b8 E8 u( f# q) P7 J( t, C
*
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* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE* A( |7 s! t! q! \1 t' x
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE. r+ } ^. d4 l) f( W
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/+ [# w5 v8 N' t! {+ i. u
*
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* This program is free software; you can redistribute it and/or6 Y& J) E8 B- E$ U* m
* 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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* 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% @" e# R0 S6 o/ O
* 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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*/
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#include <linux/module.h>
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#include <linux/init.h>5 d7 s% S5 W! o% [
#include <linux/errno.h>% I2 ?6 f. E# u8 h$ {) o3 v
#include <linux/types.h>
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#include <linux/interrupt.h>, b0 @5 n9 `( {- E
#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>$ x1 |0 Z8 l$ a: |! O
#include <linux/mm.h>+ Y/ ~# z* i/ ^; J6 r8 s
#include <linux/dma-mapping.h>6 J2 U; C @2 v5 V; X W
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#include <mach/memory.h>
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#include <mach/hardware.h>* ^# B6 U1 r8 d5 a* @
#include <mach/irqs.h>1 R0 G6 o. R4 B" i, S" m/ f
#include <asm/hardware/edma.h>; R- `& ~3 c# m4 |+ v, e
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG! @- g( a- q# C6 }$ ^* ?) n& A
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS), ~' l# X9 L4 m/ d
#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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#else0 V' B t0 r1 x0 ~3 o- E
#define DMA_PRINTK( x... )# t0 j1 d! P9 X$ a% L2 O( J$ W, F; U
#define DMA_FN_IN3 R4 A8 q. E; Y) O
#define DMA_FN_OUT
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#endif9 I% h6 [0 ^ g- d: T
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#define MAX_DMA_TRANSFER_IN_BYTES (32768): e4 S; }$ z. h' N2 P3 h
#define STATIC_SHIFT 34 |+ _. U; Q- a
#define TCINTEN_SHIFT 20) @; N* B- k# D" M) K% J; L
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 229 g# ^$ z" Y, P. ?$ Y4 K
#define ITCCHEN_SHIFT 235 P2 d S# r- ]. }. P' s2 D' {' }
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static volatile int irqraised1 = 0;; Z7 [* r" S. F% J
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);+ N( N8 D* @" p+ b# B# ~: ^. w
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);, r/ y9 ?2 b, K* k
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dma_addr_t dmaphyssrc1 = 0;8 Y/ e2 Z1 e* c/ V% C
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;* J4 @. Y+ I& k2 X! M" t1 c2 K* Z
char *dmabufsrc2 = NULL;/ G4 o* n% o d/ x0 c
char *dmabufdest1 = NULL;" l: p# N; R' B5 n* H/ c8 L0 V
char *dmabufdest2 = NULL;( P- i# a# P. I i' T. X9 \
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;+ E* u+ \, h' x5 X/ T
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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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