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) y4 c' {& z! M4 P' P1 i1 H$ z. l5 ~
*
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* brief EDMA3 Test Application! U3 w& g& ~( R: z6 X
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* This file contains EDMA3 Test code.( e0 \9 _2 u9 K( g
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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
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* TO CHANGE.* i0 t d+ g* Z6 O: G8 w: k
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/# R1 b. r' t: i+ d, {+ j' i
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* This program is free software; you can redistribute it and/or8 g7 v# _( q+ N2 G0 Q) P) {, h
* modify it under the terms of the GNU General Public License as. `; K$ \) q. \0 K4 G, B
* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any" Z! [' c5 [2 o1 u* a
* kind, whether express or implied; without even the implied warranty& g" G! [. M1 }1 h* B
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the8 U# x, Z0 J+ ^* L7 c3 g- T6 I
* GNU General Public License for more details., I) d8 @. ^7 _
*/
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#include <linux/module.h>5 k4 z" {) S6 G, P9 d6 F+ [: i
#include <linux/init.h>- |. c r& P0 l; N! m1 E( J3 n
#include <linux/errno.h>; f8 ~% c# |, F: {: J
#include <linux/types.h> l7 u" ?! _2 J6 h: z1 p# C
#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>1 A+ \# d: e+ p: e
#include <linux/dma-mapping.h>
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#include <mach/memory.h>, ^: o F, g8 K$ H* z2 \
#include <mach/hardware.h>$ w, P+ P- { d1 e6 l
#include <mach/irqs.h>0 l5 J* f9 z: y+ E3 F" A' L: e
#include <asm/hardware/edma.h>9 W R3 N# S% r7 h h
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#undef EDMA3_DEBUG- M% n, X3 d6 K2 R/ H0 ?1 h; _
/*#define EDMA3_DEBUG*/ ]6 H/ X% b; k4 O! u
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#ifdef EDMA3_DEBUG
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#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__), z0 r+ B& i1 P' m8 P: k$ t4 M( Y i' }
#else, y; X' d) ^$ J4 x5 X
#define DMA_PRINTK( x... )- @! K2 R8 t* c0 n+ m; b7 I
#define DMA_FN_IN
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#define DMA_FN_OUT: \* M+ m1 c4 Q5 k9 k) q/ Y6 B: Y
#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 200 Q {3 M1 E; k/ u! U8 o
#define ITCINTEN_SHIFT 21# m! a! r5 w9 l& q5 p
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23; E+ _- G8 B5 h
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static volatile int irqraised1 = 0;$ v7 R9 D6 L( B/ K& ]; _3 S- k
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);) I5 a# G+ O2 @& k3 ~: l! M
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);+ r1 A9 D& S8 l* n( `, ]0 i$ T
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dma_addr_t dmaphyssrc1 = 0;- W8 l' P/ i a, C% j
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;7 J5 p1 G6 q7 B3 U [
dma_addr_t dmaphysdest2 = 0;1 `# _) p" q7 d; V/ s
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;$ n7 o) N! F8 t4 v: ?0 J" a
char *dmabufdest2 = NULL;+ t- }& A$ ~# h+ ^8 s
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static int acnt = 512;0 E$ o& U& }2 g
static int bcnt = 8;; ^, J1 D6 r5 {
static int ccnt = 8;& ~" Q* u3 y# v- |. A( C7 @
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module_param(acnt, int, S_IRUGO);# a0 P$ f. K- k! ?, V& W
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