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 application9 C% `6 `0 O! \
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* edma_test.c: p5 R$ R0 M' q; W) }$ T/ z
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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 BE* \2 J1 f# ^2 z+ b, T0 g
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.
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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/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.# X2 s/ R. i: p! H3 |
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any# E/ v* g4 L9 X! \/ a/ M2 n
* kind, whether express or implied; without even the implied warranty% }- G" I# G% x) c
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.! z! Y& U, k0 n/ }8 k; ^. X
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>) S4 |9 g2 r: c6 R4 ]' O1 w
#include <linux/types.h> b3 ^# t* k7 v9 \7 |, r% H! }3 `
#include <linux/interrupt.h>0 S& N4 ]6 u8 ^: G
#include <asm/io.h>( W$ `" ]- N' j3 @
#include <linux/moduleparam.h>$ `5 s/ L$ B& Q( o3 r% h4 B6 Q
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>$ ?4 O' A2 m6 d( p5 T! 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
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/*#define EDMA3_DEBUG*/( A. Z7 g3 z4 _+ g( p" [# \) Y* m
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#ifdef EDMA3_DEBUG( T9 ~0 F# P9 V4 U: ^4 F k, G+ m6 ?# O
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)4 K5 |! ], K c9 g# e/ I1 I
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)+ z# w* e& P2 G- w7 z
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN$ M9 o* _2 \! D* \; T% v5 K9 B2 T4 J$ Q2 V
#define DMA_FN_OUT7 R- q3 P- D; i: m. m9 {
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3# o/ f$ Y% O' h8 I
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21, W ^/ { D7 V- T7 a+ h+ n
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;1 }2 l6 v" b3 S7 j, p% R& Z
static volatile int irqraised2 = 0;! o5 G3 w8 r8 f* V. z, I
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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);
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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;& |( C( l2 y% P- j( ]/ y' z, H
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;5 @/ M* u- L" ^+ D ~$ o5 p) {
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;# l5 c7 G/ ~+ F5 \) J1 I
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;1 o" y7 m& \9 W* y2 L
char *dmabufdest2 = NULL;
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static int acnt = 512;( ~9 W6 X9 h& e. U
static int bcnt = 8;5 }7 K9 c2 U% N6 m5 v$ {
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);, r. c, x+ Q; k5 g! a: Z: u$ j
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