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$ m5 \9 R. i/ d1 M2 S# I* f
/*$ F9 \/ c1 z7 q7 V" v b- r, k
* edma_test.c4 V$ p+ k; J4 E9 z. G
*
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* brief EDMA3 Test Application
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*
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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 BE5 S: L0 h6 A( Z% B5 H" V: W1 P
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT' I2 V- ]$ A, z, x# x7 m/ t
* TO CHANGE.2 c6 h8 ]8 |% }2 \
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
# o" h7 r6 x& J& M4 D4 _) C9 J% N
* 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+ e0 w, M5 r z7 K1 A6 B
* published by the Free Software Foundation version 2.8 Q3 P `& O3 g8 {( d1 U8 K$ l9 d
*
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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
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the. _8 a* n1 d0 d% W: o
* GNU General Public License for more details.6 T$ m6 V) c y+ t2 B
*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>8 K9 a. R+ j' `: V) ]; c! \/ y
#include <linux/types.h>% {9 \- p& l7 m; [- j/ }9 b
#include <linux/interrupt.h>
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#include <asm/io.h>1 o- c- N/ ?9 m3 M0 h
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>2 ~' x5 u" J, Z8 d. Q9 B' @% w0 E
#include <linux/mm.h>& H. J0 v' b+ G1 y- t% E! b
#include <linux/dma-mapping.h>3 m S# T' l2 w& {
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#include <mach/memory.h>
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#include <mach/hardware.h>5 V8 `5 q" R( e! Q
#include <mach/irqs.h>/ ?$ _9 t1 M! R/ O- _6 ?
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG9 c+ I0 s9 i" j) U) ^$ H5 W& I
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG3 d z. E" J& z8 L5 ]4 y0 e
#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__)8 y+ f5 E5 _' C3 r
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )) V4 ^7 A0 N: r; ^. T2 q' H
#define DMA_FN_IN1 n4 C3 H: a- r; ~: Q5 F$ k1 M
#define DMA_FN_OUT2 A5 O n* b9 Y/ w* `4 \
#endif% z7 R: T# y. r3 }! d
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#define MAX_DMA_TRANSFER_IN_BYTES (32768): B5 {% B/ A7 n: Y5 ]) i
#define STATIC_SHIFT 3; y1 O3 ?1 q! d0 E' M
#define TCINTEN_SHIFT 20' F# p& Z$ B( K* `+ V9 H
#define ITCINTEN_SHIFT 216 i6 p3 M' E: g7 g0 E
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;5 Q& |+ E8 C# _# W" \) x
static volatile int irqraised2 = 0;6 r2 x0 M2 w. o# ]0 l. {
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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;0 q0 r! W, }) C3 M$ q- T5 ?
dma_addr_t dmaphyssrc2 = 0;) S3 c1 {( U2 |& N$ l: C
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;) i7 I- Y. V* ^0 @9 q
char *dmabufsrc2 = NULL;" ]+ W* Y( O) ^' }7 w6 x' t! a
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;: c. _" h4 g k
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static int acnt = 512;
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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