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
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*9 [/ j3 D; `* {* V
* brief EDMA3 Test Application8 p/ w1 A5 d* g) l" S
*
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* This file contains EDMA3 Test code.* a4 ~4 S* _1 ~$ h
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE8 k% D6 z' ?9 [$ a
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.6 K6 b+ z' L/ `8 V/ [: r
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/2 f' a5 A: j$ ~( V
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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$ g& ], |- b7 n5 e+ f, g" _5 F
* published by the Free Software Foundation version 2.+ [# b) O% s0 Q" ~
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any0 V5 C7 u6 o: G6 @
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the4 d$ N# F {. M* n, a
* 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>
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#include <linux/errno.h>; n+ f; D2 T( l1 H- `8 S* p
#include <linux/types.h>
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#include <linux/interrupt.h>5 M S4 m2 z2 Z" D, }" o7 D3 ^9 W k
#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>3 X! D, x- j! E, P' B' q8 [8 n2 Z
#include <linux/mm.h>9 T- G# a$ g8 ]6 Z1 t0 _
#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# m X" P2 [4 e M: T# a
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)1 v6 f" Y8 H2 y* ?( Y/ s
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)! B; }+ n/ h$ 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
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#define DMA_FN_OUT& C0 E! x- O6 i" e
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21/ v$ t7 ?$ f- m j, s: N9 G
#define TCCHEN_SHIFT 22, v+ t4 ~ G3 A; }7 |# ?# f7 F
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;, o! q9 ~( `$ V4 U6 C/ F9 M
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);$ h4 f/ S' j: M* p) G
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);, ]: N. o# I; w. m
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);9 i. T% M8 x0 |, ~* s* {
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;' j2 N S: O! S" s. W" n3 T+ S; I' m9 C
dma_addr_t dmaphysdest1 = 0;4 Y& ~3 ~# K( f H! @
dma_addr_t dmaphysdest2 = 0;9 ?" w7 A( h' W% A0 @
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char *dmabufsrc1 = NULL;- O$ G/ j, |4 v; z. X U q
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;9 j( p' i3 P4 S: n( k* X& K" l( G
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static int acnt = 512;6 Y% ^0 ]% M; j+ e) ]5 e% _+ F+ H
static int bcnt = 8;' M5 x) K* ?1 u3 W* U% }% F
static int ccnt = 8;6 J5 G5 M& R$ g3 S; r9 l4 Y, {
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module_param(acnt, int, S_IRUGO);2 {0 a9 @$ C7 s1 H0 d: u5 n: ]4 ~4 t. f
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