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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*
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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 BE4 g+ X& h8 c: c. H
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE." h" D& w% T* w8 b. a4 Q
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/1 F" ~) |8 V( F% n3 I
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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.
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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' s0 q' k8 K/ V C
* 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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*// V9 A5 \1 P+ l- M+ m
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#include <linux/module.h>/ I$ y% w$ A* U. l) J% j4 c: a
#include <linux/init.h>; H4 A2 n" ]% c3 k
#include <linux/errno.h>) d5 I, _$ d' ^1 y% a
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>) q! u% K+ G. m/ A- s$ O# i
#include <linux/moduleparam.h>+ X' L& }4 M& v, Z/ u
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>/ i) i- c+ U2 z0 G+ X4 n
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#include <mach/memory.h>" c8 b0 V- D6 J% a+ a
#include <mach/hardware.h>
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#include <mach/irqs.h>; x( i2 D% Z! g. @
#include <asm/hardware/edma.h>7 z0 o1 n$ w( b# C) r3 H( l
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#undef EDMA3_DEBUG" G6 d& Q; Z! d' z1 Y- v$ k
/*#define EDMA3_DEBUG*/- l0 W/ I# I/ l+ i3 t! w
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#ifdef EDMA3_DEBUG8 j: F4 b& [# g# N8 a
#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__)& h" | i1 ]: _1 L; D; S( s- d
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )+ ^ X* }: W3 j. {! x% @/ g3 ~
#define DMA_FN_IN3 B. k/ `3 `8 U
#define DMA_FN_OUT- q* h$ }6 D4 @' @1 x
#endif' }9 e- v1 q1 z* Z1 x" |
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)& l( b- U! j) N$ f
#define STATIC_SHIFT 3- [1 t, O9 Z! T
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22/ u: t, K/ c4 b, h L9 y0 |9 `
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;$ [8 \* ?5 J! S5 c% w1 O
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);! |% O1 N) y" s* V: H. C0 a
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ ^. e5 M" T' {' d5 _
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;3 s1 D- d" s) h# B6 t2 L4 p% n
dma_addr_t dmaphyssrc2 = 0;4 U& w1 X! ?9 W9 n
dma_addr_t dmaphysdest1 = 0;, p4 R# M( B6 f' E+ _
dma_addr_t dmaphysdest2 = 0;5 s- F! C% @+ g) @
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;9 S; P ^8 H' Q) S' `9 x+ x- T
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;, P0 k- Y% ]% J3 C+ l, V6 V
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static int acnt = 512;! g; s: ^& g2 ]) C: w
static int bcnt = 8;6 u( [) S# v% d, o% V4 R5 j
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);7 r& x5 ^7 J2 t5 ^; E8 q* T% o" k( Q0 }
module_param(bcnt, int, S_IRUGO);8 |; ^5 b7 |0 H& J. w: m
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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