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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/*' m# v( e' Q6 n; L5 |6 ^& V+ A9 d
* edma_test.c, `6 C/ N4 m! w7 v& M' z( G" y& n9 M
*
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* brief EDMA3 Test Application, L% }6 h/ I( l* |3 T* Z
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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' B/ S( ^% B4 U8 |; R) t: |
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT2 ~8 o, k9 O9 B/ D k: E
* TO CHANGE.) {- E; V4 w, Y6 _1 V) X/ s/ m
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/; M8 T0 b3 x) ]4 x* q! O
*
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* This program is free software; you can redistribute it and/or6 m; |! S- X( o7 o1 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.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any4 U. y1 x- a4 d
* kind, whether express or implied; without even the implied warranty5 V x1 V1 |# f% Z% l0 C% T1 L; e
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details. d! X+ O0 @4 {- v
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#include <linux/module.h>1 h1 P' s2 B, U) J
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>' _0 G; u+ y2 P2 H2 S
#include <linux/interrupt.h>0 `2 r# q! e5 X) }" R B# q
#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h> Q: Q& t: g9 o+ T, R% [
#include <linux/mm.h>
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#include <linux/dma-mapping.h>9 d' `; ~* f& I& F
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#include <mach/memory.h>2 A& W! U. ]; W9 Q' ?" D \
#include <mach/hardware.h>$ Y$ Z# a4 D9 g+ y
#include <mach/irqs.h>: J+ \# y/ ]! C* w9 l/ l8 d
#include <asm/hardware/edma.h>1 j0 `0 v, [. F
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG: U. C) `+ }7 }' ^: S2 \/ |, |
#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__)
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#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN$ }! [7 ^+ v. Z8 {! _/ z: ^
#define DMA_FN_OUT
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#endif0 w+ H' W: A0 Y! M' e5 D# X: h8 [
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)6 l; S9 h3 K( Z
#define STATIC_SHIFT 3: `/ x5 |5 v$ l* e9 ^
#define TCINTEN_SHIFT 20; ?9 J4 W, f+ n6 ]5 v
#define ITCINTEN_SHIFT 213 x3 s3 x% V: F( r+ ]
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;# T, l1 q7 o0 F4 ?$ @; U, w+ G
static volatile int irqraised2 = 0;
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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);/ s; \4 |8 b( C) F
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);$ J& y6 Z- L j$ R) g4 [) m
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dma_addr_t dmaphyssrc1 = 0;9 w$ |/ `$ C0 ]) F6 ^% @
dma_addr_t dmaphyssrc2 = 0;7 Q! _" f8 z& u4 n4 L
dma_addr_t dmaphysdest1 = 0;' V+ Q2 Q8 v/ f. K! W+ ?4 p
dma_addr_t dmaphysdest2 = 0;. f8 ^2 x' y' }: v2 @1 t6 G( u8 V
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL; s3 Z9 O- k( f, n9 e7 v: g: ?
char *dmabufdest1 = NULL;" {9 ~ _# k d) n' z2 M3 ^
char *dmabufdest2 = NULL;- _$ \: O& M; Q9 b8 \- \: {( h
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static int acnt = 512;
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static int bcnt = 8;7 y) J5 a, ?8 l! P
static int ccnt = 8;2 s( s! r# r8 V1 [- _0 \
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);5 y# K, E/ @4 E/ h/ @3 I4 T, 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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