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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/*2 F: _" ~5 S* r( Z+ x! ]
* edma_test.c8 A- W1 p f- w1 p1 O( ^1 f& A
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* brief EDMA3 Test Application
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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 BE9 A/ t2 U$ x, X
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.4 e6 `0 f% M- o' f3 z2 ~
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* 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/or3 f4 w# s1 M' d. ?' q5 G- S3 C
* modify it under the terms of the GNU General Public License as% I' a3 @# |$ q+ x* O6 b$ H p& ]2 Y
* published by the Free Software Foundation version 2." _6 f/ C; Y N, z
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any% S0 P# b% Q. u
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.0 {. G: ^: J1 g& ?3 b
*/
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#include <linux/module.h>, {, [- i7 D* F
#include <linux/init.h>
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#include <linux/errno.h>1 { {) r# w) p# n4 i$ _/ M7 A' C
#include <linux/types.h>9 C/ S4 U- J- O% ~( b7 e3 t$ J) i z
#include <linux/interrupt.h>3 M' \2 K% V$ A- E* }
#include <asm/io.h>1 R o# q/ ]7 T
#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>8 I9 H" [8 V+ X9 o2 S
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>* C3 R- E- X' [4 @* q: u
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#undef EDMA3_DEBUG3 ^" V/ }' i1 ~/ w0 X7 z
/*#define EDMA3_DEBUG*/4 d! F( @, H5 G# B
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#ifdef EDMA3_DEBUG1 b9 m6 s0 |3 W& h+ h: Q
#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__)- O0 v3 |5 X5 S+ f4 S% V& V
#else% F6 x# W+ `' r- H
#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT0 u( g% p9 r8 H. g: X
#endif( \; L+ H; K; ~; ]' p
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)* D% Z: u9 O( ?5 Q' I6 O0 h/ M
#define STATIC_SHIFT 33 C3 b/ R- F. J' V' @: a
#define TCINTEN_SHIFT 20# [' i3 \4 W& F r8 H) z7 n
#define ITCINTEN_SHIFT 218 m' J( {% t* N$ a& D+ V
#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;1 ^8 [$ s# ~0 A. U7 D+ _* {
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);$ R' g! f* c: `: G
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);5 I6 b- U7 E- Y# v k, I
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 i9 V6 J" P. c
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dma_addr_t dmaphyssrc1 = 0;. z: s1 j" K' n! N
dma_addr_t dmaphyssrc2 = 0;5 ]2 m7 j/ @" D3 o! M3 O
dma_addr_t dmaphysdest1 = 0;2 [. U5 a7 s% R6 ~3 F
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;- x+ I, U1 ?% h; }$ R0 y; E
char *dmabufsrc2 = NULL;+ b% U5 Y: T1 e; S
char *dmabufdest1 = NULL;8 @: U4 L$ \ ?
char *dmabufdest2 = NULL;* e% @. m- k% N6 x4 C6 A, g# b
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static int acnt = 512;# r" u ?3 h( R) }# Y
static int bcnt = 8;
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static int ccnt = 8; ^6 T9 `) Q2 N {% P8 O
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);+ L. J, K6 O: _
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