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! `4 q8 I# p$ S$ X. H. g% M
/*
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* edma_test.c( G* |$ X9 X6 ^8 p
*
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* brief EDMA3 Test Application$ G9 j) J3 N( ]2 u. q9 Y( F" ?
*
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* This file contains EDMA3 Test code.# w9 I- c$ j# |$ @" ]2 S
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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., v, C0 N' G3 V& ?0 R3 F/ I u
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/2 ]4 f5 Y7 i* B% I7 M
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* This program is free software; you can redistribute it and/or$ L/ h' b7 \1 I! _+ w
* modify it under the terms of the GNU General Public License as2 J( t! H+ l% V" C
* 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
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* kind, whether express or implied; without even the implied warranty9 k0 F# j3 ?' b$ J( S/ \$ g x9 O
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the: u+ m* S6 Q; J
* GNU General Public License for more details., x- l1 N& f4 Q3 A
*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>5 D9 q5 H8 I Z0 y E. I2 q; h V' q
#include <linux/types.h>2 F0 i% G- K4 _- b9 n+ T
#include <linux/interrupt.h>; R( |7 a% n) G, U! R" S+ x
#include <asm/io.h>, d5 i% d; Q7 o( z7 b
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>( I: C; W+ l) w2 H
#include <linux/dma-mapping.h>+ {& V) ^# ~: R' |7 r
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#include <mach/memory.h>" V- y/ D% _: N2 q9 Z0 E
#include <mach/hardware.h>
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#include <mach/irqs.h>7 I) G- W. o% M3 b: t5 N
#include <asm/hardware/edma.h>1 a2 F; w0 T' v2 R6 q
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*// O7 J6 L# ]+ D- o |, [
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)3 U0 y C6 k& G6 Q" z! }! f2 @+ H
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)& b" a! P- x* k8 ]# L% W( o8 S+ m
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else- a' x' D9 l( \, y
#define DMA_PRINTK( x... )0 q) d. ?# c7 V5 s- i
#define DMA_FN_IN! C- ^/ ~9 a) i0 I6 I0 _
#define DMA_FN_OUT6 ^5 e% k7 X( u& P$ R1 }
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21- X( l$ f# P8 W( w/ Q X
#define TCCHEN_SHIFT 22/ x" R$ F5 r% P& I
#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);. E6 Z1 Z9 Q) k* E& T
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;
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dma_addr_t dmaphysdest2 = 0;7 U; k, P: Y0 }6 @! z8 P
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;2 q; Y) @; m4 a3 F) Y' X8 \
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);6 v, k3 h5 y- x1 W
module_param(bcnt, int, S_IRUGO);" b+ H7 ^/ T. m# {# ^. o
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