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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/*7 b7 L. K) C5 x6 Q& {
* edma_test.c
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*
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* brief EDMA3 Test Application+ |, s l4 P3 f* a6 m
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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' E& v$ {4 ?6 ~9 p+ L* F( C
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.' j# w7 r. X8 i" w5 A( L) Q. y
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/4 q9 w1 D" @( [, `; R) t* t* ?+ [
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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- s. ^9 `7 E3 ]( v1 |# Y$ |+ [8 v
* published by the Free Software Foundation version 2.+ a+ u" y) r! j' C8 d% Z& {
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any6 K) e3 l! j+ y1 P- F9 s, q
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the6 O0 z) F6 [4 @/ A( v5 f, ^
* GNU General Public License for more details.$ L% w) |/ R8 d6 b+ C3 @
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#include <linux/module.h>
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#include <linux/init.h>$ u! b+ Z* c) S: ?# @% u) W" J9 \6 e. U7 B
#include <linux/errno.h>
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#include <linux/types.h>. Q/ K- C; g! G- O' j0 C. ~
#include <linux/interrupt.h>" A$ i; Z+ c4 a! }% O
#include <asm/io.h>
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#include <linux/moduleparam.h>+ p& ^2 A# C) m- S8 ^
#include <linux/sysctl.h>
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#include <linux/mm.h>" f* s% o1 x6 w# u, W6 O
#include <linux/dma-mapping.h>& M) [$ F3 Y8 w
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>1 Q3 `( _. z0 C, a
#undef EDMA3_DEBUG+ o4 C- x7 B7 k- A$ \1 y
/*#define EDMA3_DEBUG*/( S, |/ ]: m0 X/ f; x+ H# @1 f( i
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#ifdef EDMA3_DEBUG% \* r t5 C" U, W1 x' S' t( w
#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__)# {; i1 R2 }" i8 k
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT3 \; s* {1 D N. B& M$ L
#endif- E& l- E0 i; X/ o
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)% E5 `- F6 I& K8 T0 h% o% |; R
#define STATIC_SHIFT 3. w, p9 ]+ y$ F3 [
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 226 i$ `/ V; j1 g, u) C% Z5 R
#define ITCCHEN_SHIFT 23( |( ~6 y2 r) j4 ~& x
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static volatile int irqraised1 = 0;* s: h4 t. U2 w9 b
static volatile int irqraised2 = 0;5 [1 b( b! o* \. ]
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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);( G5 H8 y$ u$ ]4 C
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;! G) M' {$ w0 c5 P
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;+ L' n% b5 q" g+ a' I% M
dma_addr_t dmaphysdest2 = 0;- K5 ~! ]7 O6 ], T
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char *dmabufsrc1 = NULL;) [% G8 c3 W9 u4 \6 V# h8 p/ G
char *dmabufsrc2 = NULL;4 O! z) ]( Y! u
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;$ B4 X3 z% n* f1 q( @2 V
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static int acnt = 512;
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static int bcnt = 8;" _* x. w" b, p( z
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);* ^; r: B' A1 d8 b4 ]
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