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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/*
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* edma_test.c" K2 T$ B8 W, D
*
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* brief EDMA3 Test Application8 Q% c0 g! g H3 q9 q
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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 BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT/ ^, v! I$ M/ K
* TO CHANGE.3 C& G+ C' K% @' k4 e3 l# _+ {' ^. ^
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/0 J- D+ z4 ~, z7 g( a4 v/ }( i+ ~: ?( I
*
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* 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& I+ N. H2 Y5 ?0 n4 p, o
* 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 any# G8 `: j- m+ h* r; D6 X& O' ^
* kind, whether express or implied; without even the implied warranty! M0 Q6 L0 s( m7 c! a! b
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the0 b0 G7 A) A1 g. F6 [3 V
* GNU General Public License for more details.
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*/
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#include <linux/module.h>* s8 K% D0 _8 l2 }8 ?
#include <linux/init.h>9 c. ~% _+ i& |: x
#include <linux/errno.h>
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#include <linux/types.h>+ b: L/ w- B7 t3 ?: S6 _
#include <linux/interrupt.h>! y; w# `; s# A/ P
#include <asm/io.h>9 ]( x8 l) D) L) S4 [% C: r
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>) @- M0 T# E$ _! R( r3 w0 I9 b
#include <linux/mm.h>
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#include <linux/dma-mapping.h>: ]8 s% i( L, l. b0 {% d7 [
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#include <mach/memory.h>
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#include <mach/hardware.h>* {+ Z0 t& n1 O; K V
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>' F5 L- u" ~* w: ?. o
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#undef EDMA3_DEBUG0 y/ c( m2 j$ _, w
/*#define EDMA3_DEBUG*// E0 p! d3 k c! p$ |: E: p; ~" ^
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#ifdef EDMA3_DEBUG8 l8 A N" k, `# c' f- s
#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__)' S, Z. |" {' X
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)5 a$ t% |: @8 `
#else4 ]5 j9 X0 _3 G% A' [+ L9 u# C
#define DMA_PRINTK( x... ). s/ x4 o7 U0 ?" p: b
#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif& @- P7 N# y3 v
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)4 T- ?7 h) S% e5 B4 X
#define STATIC_SHIFT 3
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#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;4 P. m K" r% O! _8 L
static volatile int irqraised2 = 0;2 J5 b$ x$ [* U
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);- _. q5 C& h8 C* a
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);/ M: L. t `4 g9 {3 v
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);- B+ K+ I. A1 \, T
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dma_addr_t dmaphyssrc1 = 0; ]2 D5 s2 t) g2 H( W) R" \- y! D
dma_addr_t dmaphyssrc2 = 0;, M; U$ N( g, D
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;0 S" O% w" \! q+ p+ P+ I5 p1 t
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char *dmabufsrc1 = NULL;% F7 H* e. {$ ]. a, ]7 R4 c
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;8 n/ }: f" q! d% n& t y H$ @1 s
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static int acnt = 512;2 r: c4 p" B. Z" `% x
static int bcnt = 8;$ b7 Z9 ^6 C; D6 J. U* l) b
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);8 ]% @: Z7 R$ B4 o- G
module_param(bcnt, int, S_IRUGO);( J0 p- t4 M- l) m. v3 _
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