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% W0 a* V6 m/ c4 i# X; f- V
/*" m0 {: E! G8 N; Z0 t9 [
* edma_test.c
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*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code." L, i( a/ j, b' W7 W
*
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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% c0 c5 k9 R* [7 J
* TO CHANGE.6 ^; S6 l+ G1 m H
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/, g" s! s3 D- _5 k
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* This program is free software; you can redistribute it and/or' N9 T$ L6 j1 S) X* B7 K6 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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* This program is distributed "as is" WITHOUT ANY WARRANTY of any& ~1 N' _- i) s
* kind, whether express or implied; without even the implied warranty4 v4 m+ w5 z& C$ h0 {$ u( Q
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details./ S" G. a" @- \5 x
*/
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#include <linux/module.h>
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#include <linux/init.h>7 e, T- o) A7 \, M) \
#include <linux/errno.h>; p/ o4 D8 z- p$ P# ~
#include <linux/types.h>* [ Y: X1 c1 Z2 l" \8 a
#include <linux/interrupt.h>
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#include <asm/io.h>! _' J5 `% U! |
#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> U# M$ F2 z# N" T
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#include <mach/memory.h>
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#include <mach/hardware.h>6 h; [2 U; P% x; ^2 d$ n
#include <mach/irqs.h>
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#include <asm/hardware/edma.h># ^: [) h/ q- b) C
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#undef EDMA3_DEBUG2 J2 J' N* c$ {3 O1 W& m. y
/*#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)2 w4 [% p0 h5 s+ x* B$ l$ z
#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__)& h0 L3 X" E: r1 Z2 O" J5 P
#else
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#define DMA_PRINTK( x... )9 x! w7 j! |3 E. k2 J0 q0 a! M
#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20! e f0 w% o/ d+ k
#define ITCINTEN_SHIFT 215 n4 W% q; y1 o2 [# k/ q! I
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;# j9 D3 h4 ^8 s/ G
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);: a$ A4 e' }8 @1 c
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dma_addr_t dmaphyssrc1 = 0;; b* a/ w0 h" Y/ \. a1 Z- @& H$ F
dma_addr_t dmaphyssrc2 = 0;, C+ K# Y, \& n# }5 E, p
dma_addr_t dmaphysdest1 = 0;0 \, Y& T9 w% b# q3 P* C
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;4 ~, k" C' I2 M
char *dmabufsrc2 = NULL;5 k# l. D$ y# b3 H6 g
char *dmabufdest1 = NULL;" p) ]4 m+ [( W5 R& Y. a
char *dmabufdest2 = NULL;
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static int acnt = 512;7 T; I) O3 w, m. Q- G
static int bcnt = 8;
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static int ccnt = 8;2 ]) l7 t. w. Q2 T/ d* G
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module_param(acnt, int, S_IRUGO);. u( f% C. s0 m* h% m; m
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