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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/* K" m1 w( p' j. K6 a
* edma_test.c+ ?! @! b& Q; O) i
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* brief EDMA3 Test Application% V0 R, k) I) e0 N* s5 R
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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
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.4 y/ x8 J9 x( Z4 v
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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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* N3 W& H4 D$ |$ L. a/ g
* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any) T/ W) F) p- e
* kind, whether express or implied; without even the implied warranty1 C+ s* K; L+ \) ~. k! _4 S! c; c( t
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the9 X1 F' O" Y. P8 f% j( I
* GNU General Public License for more details.# m$ Y/ ^* q4 w# @) @$ w
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#include <linux/module.h>
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#include <linux/init.h>+ ?0 `$ w D7 a8 k: ` a) o( y9 y; Z
#include <linux/errno.h> o$ ]/ S, C2 h: v, Z- Z' F1 W
#include <linux/types.h>2 t: H6 n( q, c! H2 o6 m, V
#include <linux/interrupt.h>
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#include <asm/io.h>% \3 ]. V7 e Y: {6 d
#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>
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>% a1 @' I! e' v
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#undef EDMA3_DEBUG8 P' q2 G% @' L6 N( ?) Y$ G2 D* K
/*#define EDMA3_DEBUG*/6 i X6 E5 i1 P" ~ g1 a c- C
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#ifdef EDMA3_DEBUG6 Q2 m. u7 v4 b! t z- l/ A- V
#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. h* L D6 f: q; K5 l
#define DMA_PRINTK( x... )& ` }! f" I5 ]$ j5 I1 B2 j
#define DMA_FN_IN6 ^$ _& u7 p: B' Z3 p6 [# E5 n
#define DMA_FN_OUT C/ [, f2 A6 l0 o6 J* J
#endif$ [+ U2 X$ _5 [+ L
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)7 F Z a, n( H0 C4 G
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 209 N, O/ ~2 ]0 b! O2 P
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 229 H- `4 H% \ C: `) k v" u& N8 m8 v) H
#define ITCCHEN_SHIFT 230 r5 i3 q3 x% y) L- ^% S1 J# z
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static volatile int irqraised1 = 0;( N! t0 W/ q, l0 d; m% @
static volatile int irqraised2 = 0;# J! n0 T9 R1 Y
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);2 }2 X+ ~% D8 ^4 v( @
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);5 I' N1 d ^* w7 c) w; s5 u z
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;7 ]' ~$ ^9 k: }. U
dma_addr_t dmaphysdest1 = 0;8 v! q: Y7 f- i' W* _8 s" ]+ J& e- ?
dma_addr_t dmaphysdest2 = 0;+ h2 t7 U4 N' Y3 `4 D
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;, Y4 k4 [& T# r# F4 t8 K" x
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;) D1 b) U+ L7 v: b3 _% g
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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);8 G; I5 s- i! ]
module_param(bcnt, int, S_IRUGO); H) B( @; z$ ~' S
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