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& ^4 p0 b( T8 H; ]( ]% x9 v
/*+ [# z' B( n+ {/ S
* edma_test.c ~# _, e/ B& ]: Q% K; W
*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.6 F- ]4 L4 @/ L+ e
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE5 F$ a8 m9 x. z
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT; g/ U/ A# j5 M# V: S+ `
* TO CHANGE.8 h0 A& e+ c* |: |' Y
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com// W! K# Z) `; \" Y; Y5 x
*# p1 y' P3 [4 I7 t
* This program is free software; you can redistribute it and/or; |8 D4 h. P; o+ a, e, W
* 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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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any2 i/ G2 h/ {, T. Z3 M- J
* kind, whether express or implied; without even the implied warranty1 |( s+ S( ^: p" w
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the) n+ _2 C- F1 v& \! ?
* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/init.h>6 V, S N" ~6 Z6 Z( W6 Y. u
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>; H, |3 `' b* t `3 s) X3 d
#include <asm/io.h>$ G1 P6 e' C. X/ a( _' ~% f `5 ?* D) v
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h># {. X# P1 y3 O! L/ ^ s
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#include <mach/memory.h>( J+ [4 P# e- w; ?) B4 W1 t
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>4 e7 h- l2 u9 M
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)* Y' X+ D, H, x4 \% h
#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__)6 m' n9 e3 a8 V u. x, A
#else
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#define DMA_PRINTK( x... )7 F/ Z5 p, J& r0 k8 f4 q: [
#define DMA_FN_IN; B3 C! K9 W" r; }
#define DMA_FN_OUT' {1 B6 n" N$ v/ r
#endif0 k. g, b% f8 ~( x3 i$ v
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)7 \* n/ c- i) ] g6 R" O1 b
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#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;5 A U% V; w5 l, Y: x# f% `
static volatile int irqraised2 = 0;+ l9 o4 Q b& _8 h2 ~
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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);( K3 g2 D& n3 y
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);0 R% C. p" D E, O) x! _
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dma_addr_t dmaphyssrc1 = 0;5 [( C, G; U( h N+ C4 I/ [- W
dma_addr_t dmaphyssrc2 = 0;& h8 n6 ^* s& p" j' ]) Q4 R8 M
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;4 X% S0 I2 C% g1 a' M6 P
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;0 M }; B* }+ J; p5 e- z
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;( q. X* C# c) o9 J' p
static int bcnt = 8; ]6 I0 s; W' v( U; r8 G8 ?" I
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);8 F, e. H" F/ u6 ~
module_param(bcnt, int, S_IRUGO);8 q( E* ^' X& E1 L- f+ ?
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