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+ b5 V0 c! }( H; x# o- ^
/*
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* edma_test.c
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.$ U% P7 c4 Q8 T. e" R1 Z
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE$ ~8 }& A' ]6 [$ u" Z: v
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT( z* k0 [! P* k$ v1 m
* TO CHANGE.1 Z4 f3 g9 n7 u6 W6 {4 n4 Q
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/# [8 o" v( r) }: A Q" x
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.3 r6 ^! v- ]% X% d# t0 m4 j9 X4 s! ?# b
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/init.h>6 D, V9 g0 a2 z+ s; d( `
#include <linux/errno.h>
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#include <linux/types.h>3 M3 w3 f: e9 e- Y
#include <linux/interrupt.h>9 S/ E" G1 f' r. m3 _1 P
#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>7 [. Y2 n: b( O3 l9 i3 X0 V
#include <linux/mm.h> s& f y4 i7 V6 v, S
#include <linux/dma-mapping.h>8 J" x) l# N9 Q" G
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#include <mach/memory.h>) E5 ?9 o; P+ f8 x$ a! J6 L3 A
#include <mach/hardware.h>/ l* k" M- L- T7 s6 H4 ~1 E
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG$ v& X2 d0 ~* H9 i% G
/*#define EDMA3_DEBUG*// N. O/ m8 x2 O
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#ifdef EDMA3_DEBUG- R2 ~- ~7 w2 ]7 d) P2 n
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS); |7 ~* @; q4 G4 E( I
#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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#else0 H* H% f' @) B% a; `
#define DMA_PRINTK( x... )" f; `9 I3 ]9 O) Y/ ~& Y4 j
#define DMA_FN_IN
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#define DMA_FN_OUT. u$ I/ \; Z5 E8 ~& W3 N
#endif' J( Y) O9 P4 ]
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)5 \* h# R7 V/ P: x
#define STATIC_SHIFT 3# v, b: i2 H7 X& ~& x# `
#define TCINTEN_SHIFT 20
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#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;$ V2 S3 p* t4 U9 q2 ?
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);8 h1 h5 q' [2 q! {* m4 `* G
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 g$ c2 W9 U, b( ~" H* N
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;7 t6 w9 u+ f/ {- X& k% b
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;* S7 D9 `* e) {, I& M
char *dmabufsrc2 = NULL;. r- _* X& O1 [
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;( x: e- Y0 H1 v, B% U/ `
static int bcnt = 8;
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static int ccnt = 8;0 J: `1 n/ M( h" \
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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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