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' c# S' N- @8 w+ d! u
/*
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* edma_test.c& e& ~& i' `) t) f' Z# a0 w
*
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* brief EDMA3 Test Application/ m' W, j1 ]2 ^
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* 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% h H1 p( `% g1 b/ f" K2 i
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT3 f9 E. q% @: c( b! R0 m! g; t
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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/or
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* modify it under the terms of the GNU General Public License as' c/ h8 H6 r+ E- ~
* 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 warranty5 K0 e' E+ [/ [0 A
* 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>' Z' T% o3 p! t* W# t
#include <linux/init.h>7 g0 ^% p$ P- n$ G, B
#include <linux/errno.h>" m3 Q2 [, |# R& e: C* X
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>0 x* p/ Z5 A9 ~$ @
#include <linux/moduleparam.h>
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#include <linux/sysctl.h> u% M0 F' y2 i! B' a; x- X* x* W
#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>7 _6 k+ G* |, a
#include <mach/hardware.h># M$ t+ t4 }6 v* O
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG- t9 [- s- p0 o' R5 E0 E
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG$ f4 z$ _9 G) @) g/ {" Z
#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__)8 p, n1 n; j2 F( e1 j( T8 x
#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- h8 b0 G1 D. D: [5 m$ G* q
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 39 V$ x) j, r5 j7 X9 e' o0 ~: a8 ?
#define TCINTEN_SHIFT 206 K" k* D# q# _6 e: H6 b
#define ITCINTEN_SHIFT 21: i& [ ~7 U1 k/ e; l/ 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);) P6 U% G! T; ?$ K
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);& }* s1 W5 Q$ ^! P4 C' R) P
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);; `. B$ s2 F+ y- _3 a! s
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dma_addr_t dmaphyssrc1 = 0;. w' g4 M1 L" G* k" }
dma_addr_t dmaphyssrc2 = 0;. {4 Z0 P& I& X9 M1 f1 s3 I6 Z# ]
dma_addr_t dmaphysdest1 = 0;$ g. a" U; |1 g0 S: {
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;% H) i& w$ _( l% ?$ r; C4 i
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL; p' i% C$ X% B) w" x7 S0 g9 p
char *dmabufdest2 = NULL;
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static int acnt = 512;4 T8 V7 X4 ?, N5 c. t, |
static int bcnt = 8;% H* a' q: x5 a; \+ |
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);! t& k' o& o1 ]- y+ P( A2 C- x
module_param(bcnt, int, S_IRUGO);) B( z. `" ]) m7 Z) [7 B
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