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) f5 h$ R+ j! c0 X, Z# ?
/*4 ~& [1 p& f* f* x9 O
* edma_test.c" F5 B( y" k# \6 p
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* brief EDMA3 Test Application
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* V) q4 k! l; F3 {0 i8 P
* This file contains EDMA3 Test code.
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*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE; ]1 @: X. @! C2 r- j' u2 W
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT; z* l& y( U0 ?: a, L8 |8 z
* TO CHANGE.9 {2 H! ?9 z: X& }! g4 L. P
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/0 T0 D* A4 D' f2 |9 }" 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 as2 Z# E9 t5 s: K9 w
* 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; L5 S- h+ X g
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the: ?. O. k/ K" S4 Y1 l
* GNU General Public License for more details.8 O$ p$ n6 w, B+ S4 v4 F
*/" D) x8 j# b0 F7 H
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>$ K( x# X1 J" ^6 P7 m6 s8 Z
#include <linux/types.h>( X- i; ^5 r/ P! J; K$ u/ E9 m
#include <linux/interrupt.h>
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#include <asm/io.h>; Y: a) m5 q: N6 |% O1 ~. _
#include <linux/moduleparam.h>. t5 g) l/ F' I: r/ J
#include <linux/sysctl.h># \6 R* V6 X8 q" r( i' v% |
#include <linux/mm.h>: z/ ?( \4 R A8 P; Z/ B6 `6 l) K
#include <linux/dma-mapping.h>6 F' V8 [1 W8 W a- f4 @
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#include <mach/memory.h>
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#include <mach/hardware.h>! i6 g, Q3 M) a$ a# B* a* P4 U
#include <mach/irqs.h>/ C" X/ Z4 }% T2 _% q' W
#include <asm/hardware/edma.h>% @* z, p, o5 o* ~6 d; H
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#undef EDMA3_DEBUG- {+ \4 x- I1 F) P
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG( t$ f- r7 v5 n o/ \* A7 }
#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__)
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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... )' i; Y: c4 T. T6 q3 |
#define DMA_FN_IN0 T. r! I) ?5 M. K; @; j9 m
#define DMA_FN_OUT e6 s5 N" I9 _0 c$ {- s% H
#endif4 G& t% i0 M7 l) H
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)% U% c# h( q+ z" X% b, N, h
#define STATIC_SHIFT 3. E' E, Y5 d$ v( q u& n7 a' U
#define TCINTEN_SHIFT 200 G* Q: f. |7 P9 I
#define ITCINTEN_SHIFT 21. c4 j) y) i. l2 `) _/ [/ n1 g
#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;
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);; c4 N/ I* x) w, n# {$ P6 {
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);
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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;7 M, v/ F2 Z1 @* } L { H9 T s
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;9 x+ A' ^. V# _
char *dmabufdest1 = NULL;7 k/ t5 X% j% F8 C. Y. ~
char *dmabufdest2 = NULL;
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static int acnt = 512;" G0 L& J' h: F5 K
static int bcnt = 8;
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static int ccnt = 8; r. E; |/ x6 N5 F$ a
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module_param(acnt, int, S_IRUGO); A: |- c6 o9 T _: 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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[未解决] OMAPL138如何在Linux下使用EDMA3驱动