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+ L' @* ] _; _( Y
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* edma_test.c, `. _" z' p! O% _
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* brief EDMA3 Test Application) Z5 K9 P2 J0 r/ n+ X* Q* p
*
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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 SUBJECT! W; w; m! l5 m# g' S% X7 A, _. B& ]
* TO CHANGE.3 Y- F8 ^; Y/ k* w
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/& h( U# k4 f& I6 `) _1 ^- V
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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& t- k0 `4 W3 L4 f5 J9 G! B
* published by the Free Software Foundation version 2./ u2 P% V* ?' ^+ M! |; C! ?
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any! ?, f4 [! n! y
* kind, whether express or implied; without even the implied warranty3 d, b( }3 O" z5 R
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.. f( \- Z" f* K! z
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#include <linux/module.h>8 s7 |0 D& V8 g/ y6 ^
#include <linux/init.h>
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#include <linux/errno.h>2 f s- V7 B+ p% u9 k
#include <linux/types.h>! f# a, m# D2 {* i/ X A3 r+ l f# n
#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>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>6 t; F* V9 M: Y
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#include <mach/memory.h>
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#include <mach/hardware.h>6 R6 O/ p- {" V8 j, L
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>1 e' a5 I0 R& z* `* d% b
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#undef EDMA3_DEBUG e, S/ `1 L" ~2 x
/*#define EDMA3_DEBUG*/' L! G, t% x- y7 O- Z$ O. |
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)" Q$ }; w( B( `; [& x; j
#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__)3 g- F7 q* e( h7 i% I7 a
#else2 g& T1 D! O7 N+ y& H" H: E) a
#define DMA_PRINTK( x... )$ w- V- `6 `( D' ?# c9 \" y# w
#define DMA_FN_IN- b1 f8 O! |8 I7 q8 Y
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)+ r2 t6 I r' i3 f7 v8 M5 }$ e. p
#define STATIC_SHIFT 36 J2 k0 [3 e* Z+ {) s$ [
#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& {: h* O( G. k) Z
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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);/ h: H k5 g" S% x
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;* e! L- J- v Q
dma_addr_t dmaphyssrc2 = 0;
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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;
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char *dmabufdest2 = NULL;
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static int acnt = 512;4 f. P6 ?; r" c/ l' u
static int bcnt = 8;8 j% k. n+ O- R1 k2 ~6 a2 |# o7 V
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