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' I! }6 W. {2 D) h# A( D6 z; f6 h$ ?
/*
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* edma_test.c) E g: h' C9 I% X
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* brief EDMA3 Test Application4 `' r6 ]. H: Y' O4 o
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* This file contains EDMA3 Test code.( A, {( i+ S+ s# p0 }+ {
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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 SUBJECT5 Q4 C& P" k" i2 l( t% i" @
* TO CHANGE.# e2 Z% U1 W' k* e5 M' t" u
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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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 as! D! B! |/ t) O# I1 Y' U6 H
* published by the Free Software Foundation version 2.
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*( L: j8 M' O- U3 H' B, u
* 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) Y; [" S* h# H, T# x% t9 l
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.% Y$ ~1 H; Q' M+ F
*/
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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>0 ?* O! R c# M% W2 g/ T
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>+ x. }# A. `% C7 r
#include <linux/sysctl.h>
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#include <linux/mm.h>+ A" q! T9 E& F# `; H4 A. B
#include <linux/dma-mapping.h>
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#include <mach/memory.h>5 d4 x7 K0 u! }4 Z: Q+ x
#include <mach/hardware.h>; `0 J9 V: j( M* X: V
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG3 ~* e! h5 }% o' n9 O3 x9 i% {- Z
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)) ^! J2 a, |: ~9 r3 y+ e h
#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__)! \0 Q; X1 t2 F
#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/ G+ |* ]7 U% R% M1 L* C
#endif- a; [. c) s. g7 \: d, ~# L; x
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 32 v3 \! {& a% h7 B2 n6 y
#define TCINTEN_SHIFT 20# [* B, V, M4 F" M, s+ a1 s7 \
#define ITCINTEN_SHIFT 21/ _8 Z9 X) q' n' m
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 239 ?" Q1 o5 V7 O$ r
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static volatile int irqraised1 = 0;! n7 W' K- ^; h( S% [8 y
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);& y% h1 x( R3 A2 i+ m
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;2 T6 e0 I2 v$ q+ }' h0 K# l
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;, `7 f0 I+ P/ z. k* a
char *dmabufsrc2 = NULL;2 o! b: v& i# F1 S8 c6 J6 F& X9 v! F: e
char *dmabufdest1 = NULL;& t% _: _4 u- k$ v* V1 l9 d
char *dmabufdest2 = NULL;
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static int acnt = 512;* ~* d8 a: m$ [+ _
static int bcnt = 8;) T S, S! C! n: C4 K( F' u8 ^
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);4 c6 N1 J: R; W5 D
module_param(bcnt, int, S_IRUGO);4 s0 O0 \! y- h6 R* Z5 w( \) k
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