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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/*
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* edma_test.c1 `7 v: i$ [3 O. C% y u
*
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* brief EDMA3 Test Application( d6 y8 N( r2 D5 F; [. C
*
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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; \# l1 g T4 d7 u& Z
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT# X4 v- u% Y) n: U2 r F
* TO CHANGE.2 w5 X5 f0 n+ P: 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/or! F8 | d! R7 V! q+ F
* 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 any! L) F% x4 |7 v# w
* kind, whether express or implied; without even the implied warranty( t9 P3 S$ Q$ Z' \* q
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the$ K6 X0 `& R+ }! O
* GNU General Public License for more details. _/ |; y" `3 B+ Y
*/
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#include <linux/module.h>
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#include <linux/init.h>- W. _9 N$ y5 o* M- f6 J
#include <linux/errno.h>3 ~$ x5 N6 J7 y( M
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>; O: k3 x, }4 s; K
#include <linux/mm.h>/ b3 @; R6 V& w0 k+ i8 R. H
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>, b7 @: G3 o. A& P% e* o
#include <mach/irqs.h>. P1 C$ l- [, A& G7 w" t% [ X
#include <asm/hardware/edma.h>1 K5 f6 ] I e* q8 E: R
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG5 Z7 X ]) R) u- Q
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)5 Y; E! ^! s, H( M/ k- {: w6 o
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__) U; i3 G0 I) c7 ^) J
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else" n' o" |9 m* z- w) f/ M* `
#define DMA_PRINTK( x... )% C* P8 m0 M/ K0 ]6 C: O
#define DMA_FN_IN2 F1 }/ W8 v# i. a B# B) _' J
#define DMA_FN_OUT$ J6 g7 f$ v1 N) J
#endif5 U8 d1 a$ B: n/ s4 t
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 39 H. H* e' D' [8 R: ?
#define TCINTEN_SHIFT 20 D, f' V) X7 o- `9 i: [' Y
#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;
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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);
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int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);( L$ }8 w% u* _# V4 W3 D
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;! p* z4 a L: t8 Y, b( t% l, \
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char *dmabufsrc1 = NULL; n. O6 P ] L! z
char *dmabufsrc2 = NULL;# R# d' g2 A3 [- m
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;6 o _( X; S+ @0 W" 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;3 a4 P+ I, s# ?+ j3 b% w" y
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module_param(acnt, int, S_IRUGO);4 e# M C$ W. S: h! o7 J9 w
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