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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*
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.: @% s8 S9 p6 I0 F4 D
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE' S) Y+ b8 S/ h5 k2 C* u
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.- x0 G0 R; n H' J& u
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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* This program is free software; you can redistribute it and/or7 z% w) G+ H! T$ b8 W
* modify it under the terms of the GNU General Public License as2 J! D* q7 S4 U% ^# l
* published by the Free Software Foundation version 2.* a$ z/ S5 H" n* `
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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$ {# V. c$ ]9 X/ U
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the* C& I5 Y" } o+ W A( j4 |0 Y
* GNU General Public License for more details.: Z z' V- _" v5 }2 [; g
*/
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#include <linux/module.h>0 Z U1 a/ V4 I- I5 p
#include <linux/init.h>
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#include <linux/errno.h>/ }. o2 U9 V! C d
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>/ N! J+ i7 N; ^8 G) {
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>+ [8 S+ E& X9 V5 h. d- @- j9 P
#include <linux/dma-mapping.h>
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#include <mach/memory.h>+ ?- e& M0 m7 o2 _- j& T% u) C
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>/ h/ d2 t0 G& e3 a- e# |6 u
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#undef EDMA3_DEBUG% l# s) V; O; m, N. ^9 h
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG6 W1 w2 J3 A. {* U# q
#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__)3 d& X) d9 D% O+ `6 A; `8 u
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__). ^' b& R+ r3 ]
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT$ x4 p* f( _" t) ~1 t& d# T: X
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)( q3 b3 K+ C) t% C J* D
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 208 K& ^3 C+ E7 u9 z, \+ [# 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;; y& h1 b, {+ p
static volatile int irqraised2 = 0;
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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);" |7 p( S" M' I: c( Q
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;' N2 ?7 p: A7 A
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;, z! o% i; N) M" f3 p* M
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char *dmabufsrc1 = NULL;. \9 D1 e# b% A+ T
char *dmabufsrc2 = NULL;; S- f9 Q# j% x8 {* K
char *dmabufdest1 = NULL;9 R/ }# t4 F. W! d
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;' Y2 \! o& w; k( C! J6 Q a
static int ccnt = 8;' z3 x& g( ^& o# o0 p, }
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module_param(acnt, int, S_IRUGO);1 [* C+ O' x" ]8 w
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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