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" j' q" s1 C" V+ j% d& Y! f
/*5 O7 c4 G9 A( L; S0 {+ H* I5 \/ ]1 F& K
* edma_test.c) s& B$ V/ k# w# m: ?. p( T
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* brief EDMA3 Test Application
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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
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.+ X4 f( e; a# K# i: p' b' _5 o
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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/or
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* modify it under the terms of the GNU General Public License as6 S' d; h8 q6 e( A/ {" R
* published by the Free Software Foundation version 2.) Z/ Y! W' Y( z6 _/ c E* b
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any- ~9 F$ f) _; s- f" W; `7 |0 G
* kind, whether express or implied; without even the implied warranty6 }7 H, h2 C% G
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the, m$ H" F5 I! |, f
* GNU General Public License for more details.
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*/
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#include <linux/module.h>- j. Z% a- A4 ~2 c% O
#include <linux/init.h>' T. Q% {2 T( M
#include <linux/errno.h>9 h* V8 z+ y% Z# P6 z% d
#include <linux/types.h>. t" H* f) E( e9 A
#include <linux/interrupt.h>6 X0 K2 ~) i5 Y0 z0 {
#include <asm/io.h>
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#include <linux/moduleparam.h># k2 m8 b4 L% }4 H. T0 o) W+ o( z, c
#include <linux/sysctl.h>- D9 C6 Y8 r+ Z/ j. @: A
#include <linux/mm.h>4 t6 j! y- D9 D5 I5 c
#include <linux/dma-mapping.h>8 C& P% G2 g- q; }
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>' u% k9 m6 N9 u" \* |4 B* }
#include <asm/hardware/edma.h>1 ^0 \% ^$ I# R, Y
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#undef EDMA3_DEBUG' N y* e2 \- J7 m$ @
/*#define EDMA3_DEBUG*/, A$ h: l& m! h! K: h, x
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#ifdef EDMA3_DEBUG5 C% ]+ f$ h7 H7 |# a
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)6 ]. n' U+ d8 t1 E
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)& [) O% v9 s. _' z1 K
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__): E" ~/ Y2 L/ h9 c
#else" K- h! N3 X0 y9 y8 u; n
#define DMA_PRINTK( x... ); ^: B/ `1 S; }, G, S% e- B
#define DMA_FN_IN5 G3 [2 M' ^0 b& R& e
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20+ ~) W/ [7 W" C2 c' L
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 229 y: h- p) ] ~+ e. {1 c. V" T
#define ITCCHEN_SHIFT 234 @0 l: m# B h
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static volatile int irqraised1 = 0;/ R: p/ L2 j7 _, q8 s
static volatile int irqraised2 = 0;, l4 }( y; ^+ J4 e
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);) D0 p! ^* b% X6 @3 F$ g8 A$ |! W9 ^4 g
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);& I9 X3 n+ [5 H, P
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;; m. a" W6 Z& K( p& d b
dma_addr_t dmaphyssrc2 = 0; v1 s1 E3 ~3 e( P! D8 B' y% S" U: y$ P
dma_addr_t dmaphysdest1 = 0;( X a7 b5 x) T, ~& z, w
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;& C& I6 n2 Y& x$ K
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;/ V" _8 w. I6 G9 ~: E
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO); x) i$ P* r9 N: b" B& ^
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