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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* edma_test.c
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* brief EDMA3 Test Application
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*
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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! `0 g3 ?( e- E$ R. u
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.& q, V* O: ]5 L3 M* ]
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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/or2 ?8 x0 U# V0 d0 g" z# C$ |
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.: g" X- N+ H% h% ?# Y2 O
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any4 K+ [) S9 c$ k8 w8 A4 S4 X8 X, d
* kind, whether express or implied; without even the implied warranty- _" |0 i+ L+ w( B* f) }5 _
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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#include <linux/module.h>* E9 o0 p, g) e( Y" z
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>+ U2 N, X$ L3 d
#include <linux/interrupt.h>! n( D% U# }0 H( \) h& V
#include <asm/io.h>1 [- E' S( Z- y( `2 H
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>3 N3 m8 o+ T/ ~# D6 B+ W
#include <linux/mm.h>
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#include <linux/dma-mapping.h>/ B$ q9 f/ m! W7 \0 a3 G/ t- \2 y
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#include <mach/memory.h>
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#include <mach/hardware.h>5 {' [4 S/ L9 z) r! y* e9 p& h
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>5 M$ v5 K0 i/ Y
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#undef EDMA3_DEBUG7 i9 k- _7 \* b+ [6 l3 M9 m
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG# V% W5 ~3 ~: l" C5 r
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)8 J, c* [' i' e3 y
#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__)% H) ]( U2 v" H0 H4 M( C
#else1 E: G+ I% [$ r/ c
#define DMA_PRINTK( x... )
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#define DMA_FN_IN& @% q7 q# T0 q: [6 N0 |
#define DMA_FN_OUT3 Y" c% u/ h( g8 v* [ U8 P4 o9 V
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)5 |; \; ^2 y6 Y
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20- ], z* k. c6 |3 l
#define ITCINTEN_SHIFT 21# D, y& C; X- D) L" h
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 231 C! H4 g" M! v2 X& P
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static volatile int irqraised1 = 0;. j6 W- T$ x: u) u+ @" [! `3 ^, \
static volatile int irqraised2 = 0;0 h, A e# r) F4 q, l8 k7 Z
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);$ ^* L& `+ k6 e! F3 R! b
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);
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;8 Q4 a w' j& G5 p+ F! Q$ f
dma_addr_t dmaphysdest1 = 0;& l( \3 k/ w Q6 K* a0 E- U
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;3 u! i0 |* O5 U5 K
char *dmabufsrc2 = NULL;. j; h8 U# z( S) t
char *dmabufdest1 = NULL;) Y9 o4 @1 b" x* p
char *dmabufdest2 = NULL;( x8 ^+ Q) \- r0 q+ E7 F
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static int acnt = 512;5 W7 f; I! y1 l- ^: l- R& D
static int bcnt = 8;( k7 I+ m9 \ [3 j# d6 ]
static int ccnt = 8;$ c& `4 R& O2 _3 Q* V/ f9 R% |
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module_param(acnt, int, S_IRUGO);. t8 D$ F1 a" W, i1 o/ v+ I. M# ?& F
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