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) w& D2 G9 c( a1 j3 }7 ^- B
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* edma_test.c
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* brief EDMA3 Test Application; A! O; C; G9 \- c% {8 O1 S! ]
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* This file contains EDMA3 Test code.
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*
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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 SUBJECT9 c6 g7 H T( w/ ^. X/ u
* TO CHANGE.4 \ n) F) m8 l) J' E7 o% 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 as/ h8 o$ L0 ^4 X1 S6 v x7 c& \3 J2 Z
* published by the Free Software Foundation version 2.) |6 [) R2 O U6 e* \3 G
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any/ n& y: \. G, f5 Z
* kind, whether express or implied; without even the implied warranty( u v' G7 i1 r0 |: Y( L9 L
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the7 O; L4 h# d( p% R
* GNU General Public License for more details.1 B) g/ ~! J) d _5 _0 n
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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>/ L/ S, |' R6 Z; h
#include <linux/interrupt.h>/ H$ D$ q: y& ?9 S; v3 S
#include <asm/io.h>5 B) W; L2 L! q8 }
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>2 h I$ e0 P1 `. a. z6 I9 X: O0 q
#include <linux/mm.h>( ^& n8 D4 x) ]5 d, ?, {8 N% T
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>- c: ^3 R( `9 ], k+ a- k4 J
#include <mach/irqs.h>5 E" N! N+ Y+ { _9 F
#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( D5 n w: I( Z6 i0 y( I) n# x
#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__)6 S" B1 ?/ g* }# d5 K ^! Q' H
#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_IN8 c, d* |3 L- D/ B
#define DMA_FN_OUT" a1 E! g" L; F7 _+ y( S* v3 T- W
#endif* M0 D" q b6 I" p2 j+ z
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)+ s4 P8 }+ c- K. o; t
#define STATIC_SHIFT 35 i' {" Z% b7 Z" [ J( i
#define TCINTEN_SHIFT 20; @) X) |" |" |
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22% }, e5 g0 h" M7 W- B
#define ITCCHEN_SHIFT 232 X7 O) r# C3 T+ g
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static volatile int irqraised1 = 0;$ @! X7 ]! X. r: J- ~9 r
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);8 K; |3 y( M5 h: ^) @
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;, m8 U% T/ j( ]. d7 G1 p
dma_addr_t dmaphyssrc2 = 0;7 L: W1 }0 x5 c1 j; Q
dma_addr_t dmaphysdest1 = 0;0 e/ E' Q# ^! c# z
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;# | j! d$ K4 u8 W0 |, }( c$ ]
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;' `, A q/ R \: ?% B2 ]& S$ B
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);. L7 L O( C/ I5 j" o- |
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