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.c4 F$ Z' e. b, _* K, d$ T. r) \
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* brief EDMA3 Test Application
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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( I3 r. ~1 r& Q8 s) k
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT, r2 X; v/ X6 v6 h% w7 U; y
* TO CHANGE.3 X9 w% l c4 Q$ D& d
*
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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: c* S/ x( q! h
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any7 w" G6 h* _2 w7 D% M
* kind, whether express or implied; without even the implied warranty7 t) P$ Z$ ?/ v
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the; w. Z4 E. Z% N6 E/ Q) z. X; c
* GNU General Public License for more details.
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*/
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#include <linux/module.h>0 D' |& h8 e* `* i& ^+ M: ^" o W
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>6 l- A7 C! n& _( ]; }
#include <linux/interrupt.h>! m7 d+ R6 K& j# _
#include <asm/io.h>+ J: T; i7 o ~: B2 J; z5 A
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>, a& r' J8 B7 L' F
#include <linux/mm.h>2 ~( y0 c' i. L8 H# P8 A5 ~3 E' t
#include <linux/dma-mapping.h>8 Z R0 [" d) H- E9 c- _
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#include <mach/memory.h>! L% n: C2 z. P4 Y& {5 S
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h># s' U0 t0 r! D) B( R0 d7 {& m
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#undef EDMA3_DEBUG& {5 e, u9 ~- _9 r" n0 c$ [
/*#define EDMA3_DEBUG*/* A3 L* V" N! m1 |- c- u: M+ X( u
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#ifdef EDMA3_DEBUG
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#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__)* \' h! R. L: u. M' S# N: r
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)# t0 \# G {3 Y7 o
#else: U) ]! ]8 [. r6 O$ b5 w
#define DMA_PRINTK( x... )* N/ W5 r! `- a$ P# m/ @0 k
#define DMA_FN_IN$ ?1 l5 B6 ~( q3 _6 E& j. K
#define DMA_FN_OUT
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#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* }& q0 T7 `" F' Q. f4 e- R* r
#define ITCINTEN_SHIFT 21+ |$ R8 j* \4 |1 B
#define TCCHEN_SHIFT 228 O0 c: {/ B+ }9 `- d
#define ITCCHEN_SHIFT 23/ W" ]3 ^% K6 J# m
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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);) z6 f O9 O+ {3 p
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue); Z0 s: \5 \2 B8 }1 a4 @
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;' q3 t5 X& C( f' o; u
dma_addr_t dmaphysdest1 = 0;3 P. w# h' m$ q: Q* J
dma_addr_t dmaphysdest2 = 0;4 W1 s I+ } y9 s; m
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL; Q: P) n* v+ q- _0 e5 R( e7 [
char *dmabufdest2 = NULL;* l1 N! E. H9 z8 N' O' I
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;- v) y/ X! i/ _; c O {3 B! o
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module_param(acnt, int, S_IRUGO);
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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