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$ ^ P5 S" i5 c5 D' N8 E D' \
/*
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* edma_test.c
*
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* brief EDMA3 Test Application: O) t( f7 j$ o' E: {! F. C
*
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* This file contains EDMA3 Test code.' m3 |0 `+ f+ x, _' w
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE% N& z( E" x) H: N/ H3 S( F2 k
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT# Y6 z5 O7 n7 d0 ~# e
* TO CHANGE." Z1 Y) @& s" H
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or9 u8 H& w6 o0 `. ~ `
* 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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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any! O- |, G" Y! b) `6 |9 n& i, U
* kind, whether express or implied; without even the implied warranty# F2 {* I, z1 ^. c6 p0 C1 S
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the, o& ^# Q2 m" D- Q7 T. a
* GNU General Public License for more details.9 G8 P9 `: r7 [$ x
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#include <linux/module.h>
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#include <linux/init.h>" \7 @. i( s0 D% U
#include <linux/errno.h>
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#include <linux/types.h>; @( B- N. V; E
#include <linux/interrupt.h>3 C6 |; G8 z) V0 y: n& w
#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>
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#include <linux/dma-mapping.h>5 c1 H: Y: C4 _! k2 z. u
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#include <mach/memory.h>
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#include <mach/hardware.h>5 z, u0 z6 q, z4 o( Q5 j
#include <mach/irqs.h>* z- D2 Q' i* J) ^, N! C& |8 @
#include <asm/hardware/edma.h>! O- ~2 r! q5 J: J
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG7 A) X' t* c% J0 b* c) M8 D
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)4 g3 S, g! \: I% _" e
#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... ). R5 ?3 R' M3 m. E8 ~3 b
#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)
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#define STATIC_SHIFT 3. r! s- ^4 w; V8 Q
#define TCINTEN_SHIFT 20. n% ]: Z2 y' i+ k$ k& M9 n: V/ ]2 J
#define ITCINTEN_SHIFT 21* G, P0 {3 _9 M, a# h% H/ k
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23" H$ k+ G: @/ n8 h( O
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static volatile int irqraised1 = 0;& M8 F# C9 U2 ?
static volatile int irqraised2 = 0;) k: i" Q* y$ f' V( J) o2 G( @( R2 d
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);0 O2 G1 g1 V, c# z9 R3 D6 p6 R
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);' ?6 f- S# W! z. y8 B3 @& M) z
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;
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dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;2 p/ _- j/ m6 a) l& a
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char *dmabufsrc1 = NULL;' n) a% I0 U/ M) U
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;, g& k8 n2 c c) n2 R
char *dmabufdest2 = NULL;8 e) _% H6 a4 U! _
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static int acnt = 512;1 Z8 w- N0 } ~+ A2 F; N
static int bcnt = 8;5 O2 s% E; S* a2 P, Z" f
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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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