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 application4 y/ o5 W! k; {' F8 e) r) e
/*
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* edma_test.c" K/ l! P% N) n- M! S m# j3 P
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* brief EDMA3 Test Application
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*
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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 BE5 Q9 L/ _2 F; `
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT- a2 ^3 d2 v/ N; y3 P
* TO CHANGE.7 U, x$ i5 c& z& e# ~0 F& a
** ^% d; a0 C% d+ Y
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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** I6 b- z s8 c2 ?7 o
* This program is free software; you can redistribute it and/or" j; T1 G- x) Y g8 d4 R8 k
* modify it under the terms of the GNU General Public License as3 w2 P" n4 b' o5 {' }$ w5 ^& |1 n0 Z
* published by the Free Software Foundation version 2.- B, L" p3 b: ^( P5 B2 Q) J
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any7 A& L7 _2 s2 z$ D5 b
* kind, whether express or implied; without even the implied warranty; Y7 R1 I$ P% q, I5 ?
* 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>* k+ X/ S0 M( w3 x
#include <linux/init.h>4 t7 q& Q$ E( z" W& Z5 q& x) o
#include <linux/errno.h>" H1 u4 F2 y0 ] [) x
#include <linux/types.h>
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#include <linux/interrupt.h>& l7 {6 n/ A c7 `! t
#include <asm/io.h>
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#include <linux/moduleparam.h>4 o9 z( r' f# [# n) w- {
#include <linux/sysctl.h>
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#include <linux/mm.h>" O% b$ w K5 e) G# ]
#include <linux/dma-mapping.h>2 {- S6 D. M9 h9 M2 u6 e6 q
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#include <mach/memory.h>
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#include <mach/hardware.h>5 ]! a( j3 ]- k: o; R
#include <mach/irqs.h>, c0 \: @, W4 d* c( u D0 E
#include <asm/hardware/edma.h>! ]1 J$ I% L$ i1 t H7 s
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/, i5 o$ N1 I% u% R* `& \
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#ifdef EDMA3_DEBUG) ?$ q- |" J Q9 i. }2 h
#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__)9 X3 I6 n0 L+ x _8 Q# ` F5 V
#else0 X' n6 n" v$ a n
#define DMA_PRINTK( x... )
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#define DMA_FN_IN, E! k: s) U2 ]# C& t: @
#define DMA_FN_OUT9 @' u; w/ x# e7 p
#endif; m2 K9 h* \6 |3 e# N3 _- Q/ \* a
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#define MAX_DMA_TRANSFER_IN_BYTES (32768) S' S1 z% p# w' V
#define STATIC_SHIFT 32 H1 G; I, N$ F* U
#define TCINTEN_SHIFT 200 q- r% X) S1 P& ?& _
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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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);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 n) L: b+ c) z- Z6 M
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue); Y; q z+ _1 H" T
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;8 d8 u Q1 k& X
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;! h: u3 T, ?8 x w. H# X1 i
char *dmabufsrc2 = NULL;+ T( M9 y/ s x. y' w
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;4 u" F ^: [/ N8 z h( u, Q
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static int acnt = 512;
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static int bcnt = 8;; q1 M u$ j9 j l1 O0 \3 \
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);9 T4 o4 H" [2 u* }
module_param(bcnt, int, S_IRUGO);5 O0 r1 d2 U& ~) U. H
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