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 application3 l8 s. X# Z6 S; f) J
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* edma_test.c9 p& ~4 m% P3 a( C9 I# o6 h2 n
*
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* brief EDMA3 Test Application& e0 t3 } j& R9 N' J
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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 SUBJECT5 J, Y$ U( z: T% k
* TO CHANGE.0 n* b2 N; D- l" @
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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 as0 n9 f; W6 r! P
* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any* I% a/ [ T1 R4 g8 x- E
* kind, whether express or implied; without even the implied warranty: Y# \ O7 p# G% t
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.2 ?7 I9 D4 A3 I
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#include <linux/module.h>
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#include <linux/init.h>, _# @. t# ^6 M4 l9 z% n- I
#include <linux/errno.h>; ?: k' m+ t6 F& x% D6 m6 q2 }4 r
#include <linux/types.h>
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#include <linux/interrupt.h> {- Y- R& F% s, D
#include <asm/io.h>/ j" \$ Q8 r. E( |/ N, I8 P
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>, k) r( e5 ^ Y7 `( K; d) `* ^
#include <linux/mm.h>" ^0 R( S/ s. ]
#include <linux/dma-mapping.h>7 V" U e, p& k
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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>/ O. g( s! X, j, y7 g# C- U
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#undef EDMA3_DEBUG5 E% h2 g( I+ H' o! ]) c
/*#define EDMA3_DEBUG*/6 \6 n& _8 J5 a
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#ifdef EDMA3_DEBUG& t5 n7 L1 o' ?* x/ U* M5 m* k
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)8 O3 x: H' k) ]+ \0 ?' x5 C( |
#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( \1 ~0 n% X' j' `& h
#define DMA_PRINTK( x... )3 F5 F# Q/ M, R4 I2 Y5 B1 X# ^
#define DMA_FN_IN
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#define DMA_FN_OUT N" B% E+ o; u$ f
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 32 |/ L. x' a6 D
#define TCINTEN_SHIFT 20: \: r, F9 b2 Q+ [0 [9 ]2 o; q
#define ITCINTEN_SHIFT 21% K0 ^% w& F. |: }0 l8 x( P
#define TCCHEN_SHIFT 225 }$ K" l& Y) ~- U
#define ITCCHEN_SHIFT 23 x7 m7 r/ B" S# _& L1 c, R
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static volatile int irqraised1 = 0;0 e4 y! k3 ~0 i
static volatile int irqraised2 = 0;& @: M3 K5 h" a" @* ~+ ?7 P
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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);
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dma_addr_t dmaphyssrc1 = 0;5 P7 z; X- U, v9 C: o4 r# R
dma_addr_t dmaphyssrc2 = 0;) {# u& I" q( M3 M8 r$ @
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
char *dmabufdest1 = NULL;$ \5 ~6 s3 T3 c
char *dmabufdest2 = NULL;
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static int acnt = 512;! {: Q3 ]: j, Q r% K
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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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