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: \, I: Y6 U0 t- c) h; Q, V- _
/*. h8 ^* C. o* P( y
* edma_test.c" N3 S9 H, _7 C. F$ B1 M
*
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.7 {' W8 K7 c2 l, z \) ~2 d; {% K' 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 SUBJECT1 n) X" K, E. S% l: X- Q! B
* TO CHANGE.0 r4 E- ~! d3 E* |
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or0 x2 \7 {& N1 Q& m
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.. R1 S+ }: X& G$ O
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any# h# l# t& ~7 N1 f% J9 ]
* 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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#include <linux/module.h>' u. c; X" K1 l0 C3 |- q
#include <linux/init.h>
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#include <linux/errno.h>- `+ i6 r+ D1 ~
#include <linux/types.h>" r, \& q6 b, F7 W
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>+ R" y# V, F# W: u8 E" Z6 l g! ?
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>1 G$ Y3 m. Y$ s. U
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#include <mach/memory.h>
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#include <mach/hardware.h>, x6 B, O/ t* }$ ?7 Y5 y1 {
#include <mach/irqs.h>( W; h) u. l2 X# a" [' h
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG# _$ s" M$ O; _0 l. r; ?: g, A! K+ g1 W6 e
/*#define EDMA3_DEBUG*/ Y: o# W* |/ I. ^# ~+ S" W
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#ifdef EDMA3_DEBUG2 ]! W! Q }3 C8 m2 {
#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__)- [3 O, D1 n, Y2 `
#else& z4 T: c( a$ e+ T' w& p! o
#define DMA_PRINTK( x... )
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#define DMA_FN_IN# Z% D* z# J9 p# J0 J" A
#define DMA_FN_OUT2 u3 S" C2 g, C" z& L+ m# H# D
#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( p6 @6 f6 ~* { I/ s# f# |
#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);6 X, y: ~( m( [, C0 c$ \, r
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);5 F6 @5 Q+ m( K& h
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);9 ]3 }1 B; U8 W/ b) V& h- v1 `
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dma_addr_t dmaphyssrc1 = 0;9 y8 a+ Q) f4 H) ^/ K5 T( r
dma_addr_t dmaphyssrc2 = 0;3 k8 s& E% g' I
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;, e) G# ]* ~. N+ c: E3 {
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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;# p4 [2 Y3 Y; ~5 G: s5 z* Z v
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static int acnt = 512;
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static int bcnt = 8;, D# d* u2 E. m
static int ccnt = 8;3 E$ A9 ?2 C+ _* ^9 \9 H1 Z& Q
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module_param(acnt, int, S_IRUGO);3 H8 f0 \$ \ [6 n) M! z! |: }9 X/ V
module_param(bcnt, int, S_IRUGO);' r" j/ b1 ]$ S
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