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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/*8 Y4 _9 b; |, A2 z: Y" \/ }
* edma_test.c
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.# V+ b7 o( _& ?% L3 u
*
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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 SUBJECT8 w* i8 M* \, p2 U; y% I3 r
* TO CHANGE.* u) w2 S+ N e t# W! H, Q) V5 r3 d
*- v0 [2 K& R" n: w2 ^' s
* 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/or0 C5 k2 q$ P1 F/ e( B! U
* modify it under the terms of the GNU General Public License as5 O: w1 Y) n* l1 L s
* published by the Free Software Foundation version 2.
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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; H! U7 |4 g( ]+ a
* 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>/ G1 R7 F1 S2 w' m! r4 ]
#include <linux/init.h>0 J. K$ ]# |2 p7 a
#include <linux/errno.h>( Q2 [+ I' g/ u( a; G
#include <linux/types.h>
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#include <linux/interrupt.h>1 g# y! v( x8 Z4 ~: K! F
#include <asm/io.h>
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#include <linux/moduleparam.h>6 F# T5 G4 B3 _2 H. q! t2 y, ?
#include <linux/sysctl.h>/ W4 K t: s# K p
#include <linux/mm.h>% e( N+ ~/ K- x* U% C
#include <linux/dma-mapping.h>
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#include <mach/memory.h>' J9 v! \/ F/ i- y0 N2 {
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>7 Y1 F7 V" i: ~; h) p$ T
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#undef EDMA3_DEBUG' j7 l# ?/ z7 g0 p0 m3 ~
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG7 o0 [% I6 g7 `0 a! S4 W# ^, W
#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__)& t8 r/ b# |5 \6 U6 H' N7 [; ~% E
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else$ E+ e0 g0 q3 B
#define DMA_PRINTK( x... )! {: M8 q& @+ O- q4 u1 ^. l
#define DMA_FN_IN2 s4 |4 q+ T5 h( {& ~ W) S0 J9 K
#define DMA_FN_OUT* N1 x( U& \7 ] x5 L2 f) J
#endif: d" I8 g% B* B+ B" a8 P8 c
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 34 T. u" N. |0 i6 C: M. {
#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
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;$ I0 ~6 l0 M9 ~7 V; 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);( e! K' [! D) U2 ^1 F3 Y: n
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;
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dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;2 s2 \( {& H6 O6 a2 c# l
dma_addr_t dmaphysdest2 = 0;( ^, C3 a. ~4 s& J8 C
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char *dmabufsrc1 = NULL;4 R# m3 G4 f* J; J& r1 u% r% m; v
char *dmabufsrc2 = NULL;5 k5 G9 N+ C8 [; _. V
char *dmabufdest1 = NULL;7 U: I6 f# j6 S: ?2 B
char *dmabufdest2 = NULL;" h- H8 N- U, n+ F6 T" {
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static int acnt = 512;, o& c" ]5 l) L0 ], r
static int bcnt = 8;
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static int ccnt = 8;) e+ i: F& h3 g# X1 I5 k
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module_param(acnt, int, S_IRUGO);" s2 i& c& K' u. c9 o2 T6 V" X
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