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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/*/ Z" @" W& ]9 Y! b
* edma_test.c
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*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.9 A8 L: M" y+ S, D
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE5 t5 O2 G3 B" a& r, V
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT2 Y2 {0 \4 A$ Z; |2 G: ]# @, b
* TO CHANGE.' ?2 k: l5 V# W. }! {" w
*
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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/or, E' `0 C/ g7 M' W
* modify it under the terms of the GNU General Public License as1 v( X, J) [4 Z2 O7 S+ q
* published by the Free Software Foundation version 2.+ ]( \! h* Q: V: e Y7 w: l
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any; Q# H" C0 K0 m1 g. k" w$ O
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the6 K) }5 `0 }; W$ q( g, k2 q- `
* GNU General Public License for more details.: w4 q7 x+ I: X: q
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#include <linux/module.h>2 A- n6 `5 }" W/ m( \
#include <linux/init.h>$ E3 B; x3 w1 t" j& u5 F
#include <linux/errno.h>4 v8 [ y- i1 d0 w5 U$ K$ B
#include <linux/types.h>8 E) L8 C2 [/ _3 ~ X+ w
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>4 V% I, Y& h1 M% H
#include <linux/dma-mapping.h>9 L9 d' a: y1 t& _$ g$ L
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#include <mach/memory.h>& K" @8 G& a s4 h3 S0 V; B9 D
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>9 w* ]# a8 m- V1 x: ]' y
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*// @4 r9 _' i7 M
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#ifdef EDMA3_DEBUG3 l1 R \5 i& x3 Q
#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__)
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#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
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#endif) o; L9 [$ Y. {
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)2 l2 g) V8 W8 F" B
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21' s$ }- s1 M3 R% R$ e( w$ _
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23) K% d" a. i$ U+ @. u8 D
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;. E: c2 O2 r# m8 k. q& w1 E& |1 x+ o7 v
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);) ?' R2 }/ _* E% A; V/ n0 y
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);7 p4 ^) M* h, E- X A- h
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;1 U3 [7 C1 w2 G& i+ l7 u
dma_addr_t dmaphyssrc2 = 0;* Z, B, ]: S4 ]& r$ \: A% O0 z
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;6 U" Y4 H+ w* e- y- _
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;$ @: M6 w& @) M: J
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static int acnt = 512;! o9 l8 j. H( y, R
static int bcnt = 8;4 o' `4 H F- }! x+ n* X# t# k
static int ccnt = 8;' U* [/ V9 Z; y
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);2 x) d5 B' H2 ^" f: c
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