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* S0 `% l$ s4 z. M0 N
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* edma_test.c; ~: y2 I$ T0 N9 b
*
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.- g1 K3 Q" e& L
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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% O1 ?: B- G& C: ~
* TO CHANGE.0 k5 _* F- W/ |* U2 X
*
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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* This program is free software; you can redistribute it and/or2 e2 g: `' A0 x6 g0 |# i! i" N& g
* modify it under the terms of the GNU General Public License as1 k, F8 L+ }2 u1 S" [
* published by the Free Software Foundation version 2.! t; r+ u# ?% ]6 D
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any+ Z& S0 k+ t" k$ e2 d& v+ ?
* kind, whether express or implied; without even the implied warranty. E; y' p& B& @5 f
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the8 X. s& v+ {3 Z
* GNU General Public License for more details.% z# V4 v6 r0 ^. c
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#include <linux/module.h>; _' K9 i0 {' o, d2 U# O
#include <linux/init.h>, L) C0 D U6 R) b( I
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>: p& n; B# o: h2 H! q
#include <asm/io.h>+ s# k2 s8 F0 Z& c# k8 C
#include <linux/moduleparam.h>2 @; |5 [8 @" U. w" `) c9 \- c
#include <linux/sysctl.h>3 M7 q' I, P4 d6 X: `
#include <linux/mm.h>+ X, D0 k: l& m( p9 _% `
#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>8 f; N9 x7 G/ \( m& A, }# N
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#undef EDMA3_DEBUG6 t: E& p, A/ u! E
/*#define EDMA3_DEBUG*/$ h' W- |: }- s
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#ifdef EDMA3_DEBUG- p6 Q% p& u" n- Y7 m. i+ o
#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__)2 Z/ K: B& j# t* s( f: R
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else/ S2 ^$ i! m- O" W
#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
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)( \9 G+ w- V) Z
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21' | B, s) R3 P; D: z! i1 v2 q& k
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23# n! u6 h5 d, C& o
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static volatile int irqraised1 = 0;% [* I3 t! ~& V7 v
static volatile int irqraised2 = 0;3 Z; ?8 ]; J2 A* O. V3 F' B" T$ |6 q
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);! H& x' x/ O' [" ?6 G f& ^, E/ H, j
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);$ J" C- h& V# m
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dma_addr_t dmaphyssrc1 = 0;8 ]2 s3 V6 E$ }
dma_addr_t dmaphyssrc2 = 0;0 V% r4 o& O) M) y2 l
dma_addr_t dmaphysdest1 = 0;& O( `7 O7 }3 Q8 s
dma_addr_t dmaphysdest2 = 0;& Z+ i" A/ r4 _
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;$ T6 ~# z/ Q4 x9 }( S9 `' [
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);5 @+ \$ B7 |( B, `
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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