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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/*7 Z6 ~# d- V0 M* j3 E/ y7 ?% u
* edma_test.c3 @9 P& W M3 _8 k
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code./ ^; s# I' y- B# }2 g( q
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE9 |; r/ s u4 {. n3 O7 J
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE./ g7 z% C4 a8 E( i' {. Q
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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* This program is free software; you can redistribute it and/or8 B7 q5 c1 w" j! T/ c
* modify it under the terms of the GNU General Public License as8 \( a" R1 n6 l! \5 s
* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any5 V$ w* ^3 L( i7 L2 d( d
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the* ^* P0 K' r& r2 q3 C: G+ A
* GNU General Public License for more details./ p' ?# p" a; X; R# ?& \' J8 t
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#include <linux/module.h># B( o W) Y" E2 p6 h, Q" ~, M
#include <linux/init.h>! `4 Q0 E4 q4 `% J4 T
#include <linux/errno.h>7 i n B+ k0 @$ j: N( ]0 G- t
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>/ y: k. [* M( a( t/ L1 E
#include <linux/moduleparam.h>' s4 S! l4 O5 }& _; P/ [
#include <linux/sysctl.h>. r x1 V' g& G7 x4 I, @: a
#include <linux/mm.h>& s+ ^- n8 ]0 ~1 |2 d' q
#include <linux/dma-mapping.h>
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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>
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#undef EDMA3_DEBUG" C/ s- E) e4 g, W/ w
/*#define EDMA3_DEBUG*/0 ?, M( H+ m# Y8 c. ~6 @
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#ifdef EDMA3_DEBUG. X, Z0 Y5 B: v, ~
#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__)$ B2 A y K- c+ _/ c
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )5 h% H7 B, G* x
#define DMA_FN_IN, X' S" q* D$ c" D$ K- [8 r
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)# t3 _$ k7 }$ u5 z$ H! [
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 204 E7 b, u6 _ i; P( F+ n6 d9 E
#define ITCINTEN_SHIFT 217 ~( O1 H* w7 N0 x
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;% g5 T9 X% L; U4 z
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);$ L' K9 ] f3 E4 C: z; ^7 A1 j
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);& Y' ~- b, e+ W) Q7 y% G! @9 c
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;$ [' V1 Y) j9 g
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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# [" R# K5 P0 I1 o
char *dmabufsrc1 = NULL;, Y1 ^9 s2 a% _ y8 H) {; e
char *dmabufsrc2 = NULL;: W) H$ _6 P- V$ M
char *dmabufdest1 = NULL;& P( X. O' ~; p" m( Y' U
char *dmabufdest2 = NULL;
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static int acnt = 512;/ x% e$ p- `. B* _* O0 ^2 v. S" x7 j
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);' }3 @2 ~. V( P& u8 P
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