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( o# Q2 i! h/ h/ ?' _( E
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.0 @* T9 I+ T% D/ M2 d0 |
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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.
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/7 k$ z. T4 e% U) ?
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* This program is free software; you can redistribute it and/or& y4 G) W# \! T2 C
* modify it under the terms of the GNU General Public License as: ` I0 v f$ A0 `; O4 z; j
* published by the Free Software Foundation version 2.; n5 p$ T+ d! ^0 J
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any. t. x. E6 r) ?4 _4 J# M
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the, c! T0 p% T1 o: A ~
* GNU General Public License for more details.
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#include <linux/module.h>' ]# x% f" e, y9 }) _2 U7 X# v& s" k* u
#include <linux/init.h>& Y1 W& R$ Z, R6 ]+ E6 d
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>8 r t' a1 `3 |+ i% {* x; U5 P
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>1 P& o% } @8 N( D; [* Q
#include <linux/mm.h>; P; b/ ?' S0 H8 W: H2 d
#include <linux/dma-mapping.h>
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#include <mach/memory.h>( m% G# C4 d' z ]/ ` F
#include <mach/hardware.h>; u% n/ ?4 E; {. a- _5 _7 c9 X2 u
#include <mach/irqs.h>, T' |3 p. o+ P1 S) W+ [ \8 W1 a
#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 h8 c- u; N! o. \" c
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)9 T2 `/ l1 l+ b" d; b
#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__) e& T5 l5 J& M2 U5 o
#else" ]/ O/ g+ z$ ~+ Y2 y7 V
#define DMA_PRINTK( x... )* {4 ?: B8 l! v1 \9 U
#define DMA_FN_IN* C* s2 o7 Y- O2 R4 j" Z
#define DMA_FN_OUT, d/ q1 |( F; L3 N. @& g7 q
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768): r4 D7 W# W2 v2 m% Q
#define STATIC_SHIFT 3) [* v+ D8 O6 p, S
#define TCINTEN_SHIFT 209 b g1 w) V0 V% m. k/ e$ g$ `
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 232 G! j f3 \7 n$ [
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;5 @3 |7 O) J- h$ ^/ q
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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);
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int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);! P0 o( y" n5 S
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dma_addr_t dmaphyssrc1 = 0;/ {, x! d! A6 `. f/ P2 F; y
dma_addr_t dmaphyssrc2 = 0;& t t3 d$ W7 n9 d
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;% H; n5 x3 A0 e( J4 n% W: K
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char *dmabufsrc1 = NULL;8 t- }+ W; E" m0 S) U# l9 v# Q8 P
char *dmabufsrc2 = NULL;1 V* q0 v* h/ n; U6 U% l
char *dmabufdest1 = NULL;, e' H& C: k! f, L
char *dmabufdest2 = NULL;: `& T: b q" g: G9 F5 [
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static int acnt = 512;' x7 D. a/ ?. f- d
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);! G6 }9 v1 o: l+ M
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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