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.c/ {! {( z% \. s3 N; A3 E, m8 Y8 O
*
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* brief EDMA3 Test Application- K( l4 }9 X' C" o
*
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* This file contains EDMA3 Test code.$ C, n5 _. q; P0 a& A
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE4 b6 M8 j, @* x' N
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT3 m7 F8 E0 x% v1 ]$ b, g/ w V
* TO CHANGE.
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*
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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/or4 }5 a1 z7 g4 P3 C% X) b
* modify it under the terms of the GNU General Public License as+ V& O9 [% l5 T* o* f! ?( ` y
* published by the Free Software Foundation version 2.& f7 p; H" L& I* @
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty* K- ?& l5 X- r- W
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>% _$ i$ N5 ~0 g% t% L# e
#include <linux/init.h>
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#include <linux/errno.h>
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#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>
#include <linux/sysctl.h>/ {; `! U) ]- n/ X! c) S' ~7 }) X) @
#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>4 G; F6 s3 ~! R# \* W/ N
#include <mach/hardware.h>
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#include <mach/irqs.h>& x0 {! u' t7 X! C2 V0 N
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG% C. y; U6 u1 @# L; B f
/*#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)
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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__)6 l! T3 V+ l0 U/ v# Z5 J
#else' k; O H3 c5 {& S2 ]6 Q
#define DMA_PRINTK( x... )
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#define DMA_FN_IN% `7 `! Q, H. ^5 i' _0 A/ E
#define DMA_FN_OUT" n6 J- T4 z" Z! M0 U
#endif0 S8 }. V# E J Z5 L2 q
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3" a4 b, e: {: o5 \) y: J' G9 ^1 Q, A
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21" A, M- L& H5 b' F; \
#define TCCHEN_SHIFT 22
#define ITCCHEN_SHIFT 239 h4 u; m, |0 v4 ~ i% D) [' y
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static volatile int irqraised1 = 0;& j+ U8 j0 r2 Y! G* o/ w: W
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);6 D- N. i) R# \0 \: f* X
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);3 x9 ~, w/ }& ~; D) V$ N
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);, {# [$ _6 E5 v: J+ X
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dma_addr_t dmaphyssrc1 = 0; Y. v" g3 R4 x. X5 D0 X
dma_addr_t dmaphyssrc2 = 0;& E8 o6 z0 [- y7 J2 n
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;
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char *dmabufdest1 = NULL;1 O/ B6 k5 U, K2 d
char *dmabufdest2 = NULL;+ G( ~" m6 E) j) P6 i- |) ]3 o
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static int acnt = 512; l. e" [. E$ X% O
static int bcnt = 8;2 O3 }# C! t& x/ C9 S
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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