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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*
* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE& N: [) }3 C1 v% h1 n/ S% T3 o5 n/ F
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/7 h; v/ b! u! T/ ^& W. i
*
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* This program is free software; you can redistribute it and/or! m7 i; F8 D% Y
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any8 `. f; q0 A; O" K8 n
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the9 t& p# k6 S# j( `
* GNU General Public License for more details.8 i$ U6 g$ W+ _. |; ~, S
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#include <linux/module.h>3 C h8 W6 m2 O7 h6 t" O S
#include <linux/init.h>) @2 |: y( `* f0 V( J( L
#include <linux/errno.h>* I$ q. Q3 F& c- S/ S1 H! z
#include <linux/types.h>0 P4 h7 B* u8 g& w( O
#include <linux/interrupt.h>, z. ?0 ~) x# {3 o: {; o) J
#include <asm/io.h>9 s) f4 C" Z% t$ A4 K" {* f- p# f2 s! D
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>: B) P; b: i4 q. w2 a
#include <linux/mm.h>
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#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
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/*#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)+ j3 y, b7 r6 e" G; H4 c& l
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__). q# c% d4 h2 e6 q
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else1 |0 D- m4 Y: N: M& ?- D
#define DMA_PRINTK( x... )
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#define DMA_FN_IN" w5 C" a8 w# y$ k) U( S
#define DMA_FN_OUT! R( O- H$ N# J. O; z# C# U" s8 N
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)# F: j5 B5 R8 O% j2 D
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20* }$ A% q; A8 Y& y- Q2 [& y
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0; }- d8 \- y6 b- ~ W% e
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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);3 G( [4 p( M5 r6 T2 k$ B% e$ U
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);: x' D" Z6 o7 g7 I
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dma_addr_t dmaphyssrc1 = 0;6 L8 ~4 h- d" J h% r6 ~0 o
dma_addr_t dmaphyssrc2 = 0;3 v: S1 w" | U0 p7 I' f
dma_addr_t dmaphysdest1 = 0;4 N9 p o" q* Q3 p# _
dma_addr_t dmaphysdest2 = 0;% V) Y- e; y! v
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char *dmabufsrc1 = NULL;! g- a, _, `; M0 x5 v- P7 _+ q1 k
char *dmabufsrc2 = NULL;& e2 }$ N# G/ p+ |% o
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;; O& s' }( k5 v6 P% P2 D" E
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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);1 K$ }0 M$ V$ b* ?& F7 }( a+ k
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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