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, h6 w' }3 v9 I A' b" m, K' ~
/*
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* edma_test.c0 P7 v: C5 O+ ]5 ^8 I& y3 j5 ^. X
*
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* brief EDMA3 Test Application5 P! q; R- ]- C' t0 g; L! I
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* This file contains EDMA3 Test code.) x- M4 k/ X+ f0 a2 V: p |
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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 SUBJECT6 }# _2 X# E' p1 P2 x
* TO CHANGE.
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/, w) O1 m* W+ C I" D i; h0 m
*/ Q. c; x0 u( E& _
* This program is free software; you can redistribute it and/or* ]0 h, w1 I; d6 C5 c' Q, G
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2./ |, ~3 l8 |) a' w% x; Q! u
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any6 [1 O) Q w% i0 `- V
* kind, whether express or implied; without even the implied warranty1 b5 ^( r% Q; [7 J; {# S
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details. _) k7 A0 g6 Q) i# s
*/
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#include <linux/module.h>8 p N! A" B% ?4 G; I
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h># \. g) L: x0 T$ v, R
#include <asm/io.h>
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#include <linux/moduleparam.h>- Q+ i% P) Q# D/ H+ ]" Y3 i
#include <linux/sysctl.h>, F8 A7 y) N, A: `8 `* O
#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>/ Q8 U( J$ P) T& K2 q
#include <mach/hardware.h>6 p9 V8 u' ? c7 U: u: g6 F
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#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)( A! k* ]$ O6 c* r$ e
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)( u4 k, ^7 _7 U# ]- |/ T
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else1 R& w7 }, \( _
#define DMA_PRINTK( x... )
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#define DMA_FN_IN) u. U# \ j; k2 @' H
#define DMA_FN_OUT5 V+ p" U2 o, X: ?' f: {1 K
#endif# ]! w" N C( O( ~. ^! z d9 b' l
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)6 ]$ h1 N) ?: j
#define STATIC_SHIFT 37 {, e( c6 @" J" m C1 Z& g
#define TCINTEN_SHIFT 20, I1 C }, M2 E
#define ITCINTEN_SHIFT 215 }; w1 N# F8 C
#define TCCHEN_SHIFT 229 _( ?$ H9 L; E# t2 i7 Q7 j
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;- n& N4 e2 s* X+ j9 u
static volatile int irqraised2 = 0;; R# H/ [/ @ n# I( A0 M1 Y- F3 \
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);1 s8 R5 k! v! `( q$ |/ h
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);$ o) _- R8 X9 s' o$ G% n& K# l
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);2 Q1 M4 Z' e e9 `1 o: e
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dma_addr_t dmaphyssrc1 = 0;6 N s3 c0 |7 }9 n' R
dma_addr_t dmaphyssrc2 = 0;! G) @$ M3 x5 p+ T
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;) A' k& a% ~) \2 B
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;% v5 h& C) C6 Q* k3 K& n- m! v2 w8 M
static int ccnt = 8;# M3 s5 ^9 i, I& C6 E) P
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module_param(acnt, int, S_IRUGO);' G0 d, V4 n! ^1 P5 n
module_param(bcnt, int, S_IRUGO);5 R6 ]& u& N" f1 n* ~, v; [" X
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