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# g8 d7 \$ l& M% o+ \/ A
/*
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* edma_test.c& r) q8 {9 g- c0 ?0 I& C7 K# R8 ]
*
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* brief EDMA3 Test Application8 G# l5 Z) _6 O2 l Q- F0 Q1 O: `) a
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* This file contains EDMA3 Test code.- R% o% [0 |! k, e& t/ M
*
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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 T: u) D# a* X0 W- C7 P
* TO CHANGE.' C" w% L0 E. T9 q+ g4 ]
*/ N: N) `7 l: e+ e4 b. a
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/) W7 ]! A$ d& w K( ?
*
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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 as3 ^. G. Y. S0 ^' o% W
* published by the Free Software Foundation version 2.
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*6 { f% V/ T2 e0 }: B L
* 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$ [5 A$ t: a" z# J" z0 w4 }
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the( d* |5 P9 y- I/ V2 i- q
* GNU General Public License for more details.3 c& _5 ?, n5 V9 n" H% W2 b1 \) _1 L
*/
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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>/ P2 `* i( _8 M5 f. C
#include <linux/interrupt.h>
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#include <asm/io.h>. y+ g' e8 d4 K6 O& m; b- i8 o# K
#include <linux/moduleparam.h>! }8 [- M* v+ K4 B5 ?' s+ ^+ c
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>' {& ?8 P( l/ P- g
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#include <mach/memory.h>& O; o. Z: v! G! u3 I' f" A) v! X
#include <mach/hardware.h>8 T; N7 y: P- s \* d- P( i0 _
#include <mach/irqs.h>) [) p3 J* F- F! u
#include <asm/hardware/edma.h>* }9 j9 h( X+ c: M6 l V+ ~
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/4 ^6 C2 s% G _% x0 Q0 r6 w1 c8 ?
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)( _+ H4 n4 i# @1 {: Q n5 Q" N9 S
#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__)
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#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN; I7 @+ `# O, g, Z- @! U
#define DMA_FN_OUT" h3 F! `& f* e/ Z
#endif0 H4 z8 j% T- y/ x2 Z
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)) a. I$ s( U- q! X8 G6 \" M: @1 x
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 209 F2 y1 t L2 e3 x: n
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;' t$ L1 S! B- A9 A. y
static volatile int irqraised2 = 0;* v5 h, c# N+ U9 n. F2 \
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ } h9 |/ |$ j+ P% u3 H6 E
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);4 k' s+ I! l2 A0 ]! r* J2 s
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;/ {- {1 f8 x- N' `6 \' x1 I) r/ A
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;8 R/ d" E5 L# Y3 e: Q5 R+ `
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char *dmabufsrc1 = NULL;( ~2 y( b! S. O" q9 m
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;: l2 C8 I/ T0 R! d$ m/ ?, Q( ?' c
char *dmabufdest2 = NULL;: m, Y! z( X! V% |
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static int acnt = 512;3 a& e' F; `+ _, T) j1 f
static int bcnt = 8;
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static int ccnt = 8;" G- }( V) ]- _* h, [
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module_param(acnt, int, S_IRUGO);6 h2 K/ Z* t' d5 n1 V; k
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