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 application8 M6 c- X+ f5 W8 P' A: C( e
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* edma_test.c4 N1 [) z) c: A" V5 U
*
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.* I* h& B+ C4 P
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE/ s+ i6 P* o, U- H/ f% u
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT6 m; U$ v7 i' R
* TO CHANGE.) x# `! P1 M' V. |6 m' L
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/) Z; C$ g2 g" h& j
*
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* This program is free software; you can redistribute it and/or3 V- w$ W! H8 U3 ~4 r( t9 N. S
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.0 M. T7 e, e0 }1 x5 P
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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
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/init.h>: p1 X4 Q0 g; Z! y' M0 C7 i' G
#include <linux/errno.h>
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#include <linux/types.h>; f W; T: {5 \, n3 a& B" g
#include <linux/interrupt.h>
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#include <asm/io.h>. V: p) _/ K7 ?9 G* X" ]( `! q! Y
#include <linux/moduleparam.h>* E; b7 k) s1 U" B6 r) n
#include <linux/sysctl.h># G: ]' r3 \" W$ P- B B' U
#include <linux/mm.h>+ g) ^; t/ U+ Q2 F
#include <linux/dma-mapping.h>$ j R, B: B) A% R
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#include <mach/memory.h>
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#include <mach/hardware.h>9 \ W$ S9 Y: ^, `. P1 n/ q3 @3 M0 {
#include <mach/irqs.h> ~' k( p6 X# k5 t2 ~5 R# d
#include <asm/hardware/edma.h>% l9 g: x! P& Z! C
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/8 L/ p( |- J1 R
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS): `; A' V7 W( @ d
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)" k7 S$ K* H& ~ _/ G; i
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )% q$ g" V7 `7 t6 B3 t0 V/ b. i1 @
#define DMA_FN_IN( u! R9 `* |9 x3 e+ | {! }
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)( i9 J+ c3 ]& J9 Y- J7 S. g4 u/ J d
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20) n' x: f+ y" ?
#define ITCINTEN_SHIFT 21% N6 l7 z* r+ |1 P4 x+ u
#define TCCHEN_SHIFT 22$ |7 A/ i% }4 c" _' m
#define ITCCHEN_SHIFT 23) E6 ]! L* }% I; `
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static volatile int irqraised1 = 0;4 |7 @% k% @! g- [, ^2 W
static volatile int irqraised2 = 0;" |) @& C5 z) J! Z
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);; `" p! t9 g/ {
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);& s( J7 f3 G0 Y' C* z2 F# b$ l
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;. X6 `1 i; T, O& [% @) B7 W6 Y
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;) G( B P# @" i4 M
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;0 }( K! a+ u6 ?3 _& _
char *dmabufdest2 = NULL;! X1 ~* ]" H% a3 k8 I5 Y" k
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static int acnt = 512;# t' R9 t2 v( |1 _' ~
static int bcnt = 8;) ^, H M' b3 p% d2 {, y
static int ccnt = 8;+ y5 w3 t) L$ ]9 h
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);% O9 c0 C0 P& N2 f/ g' ^
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