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 application0 G( V4 R9 U# C6 G4 F
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* edma_test.c) @% ?4 F3 q q- b/ h
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* brief EDMA3 Test Application* G! X9 R ]: `8 g; p0 U3 w
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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" O$ Q/ a7 M% i, @
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT# T/ L4 V; L' h7 l d( h. M; T! } ~
* TO CHANGE., U7 V: V( t8 {" v- {, R/ [( |
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or5 h& @+ B# q& A0 c$ m5 Y; p( v. |
* modify it under the terms of the GNU General Public License as3 p' L/ V) C- l0 T! P
* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any3 P% G# n) `, q8 n9 W
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the7 N; t3 J, i5 g9 g6 Z5 p
* GNU General Public License for more details.+ P. b l: L# N+ d; S
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#include <linux/module.h>
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#include <linux/init.h>$ b$ B) h6 x% \& T$ G$ k# t
#include <linux/errno.h>+ }& I& Q, L! f2 l1 j) Y7 b3 U
#include <linux/types.h>: ]4 M6 [ Z9 i8 X" k& _6 N
#include <linux/interrupt.h>( V0 G) \8 r/ K* s
#include <asm/io.h>7 d3 ` q( n# z% @9 F* ]
#include <linux/moduleparam.h>- M5 e3 y/ y2 l9 r4 c
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>" k7 x: V. H; J! A6 p7 \8 {( u3 e
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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>
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#undef EDMA3_DEBUG" w9 t- d1 |' n9 U Y
/*#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)2 A5 n( A9 n/ s& K, A1 H
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)9 v+ Z8 v# J! G- r( X' s" m9 S
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)# y% C" O# c3 u. g2 r
#else2 T. V8 z, a4 o
#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)- k' D d0 X4 Z Z# C& H3 z
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20/ x# @+ w$ _0 I" U+ M/ d8 P
#define ITCINTEN_SHIFT 21$ g7 C% X9 D. ^6 ^) M/ i6 r3 n& b
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23$ i! v2 y: _7 U* I) ] M7 I
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;* n9 b; I `) B) D1 h" I
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);8 S8 i C* V) `) s' n1 J$ u6 w5 }' x& ^
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); v( O2 C" F! R9 J! T: F' [3 W
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dma_addr_t dmaphyssrc1 = 0;7 L8 W: H: m$ t# x) t# \3 t
dma_addr_t dmaphyssrc2 = 0;+ Z8 i6 O% {/ o; f
dma_addr_t dmaphysdest1 = 0;# _) E$ x. l! S8 q5 L+ Y
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;/ t# B! p& _ s
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;/ e' K* x6 O+ B& J
static int ccnt = 8;& B2 d! ]4 b. `( O
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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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[未解决] OMAPL138如何在Linux下使用EDMA3驱动