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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/*: k% a; [4 i; q9 ` |8 h! f
* edma_test.c
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* h' H( [! U7 j0 h, `- P. j, K
* brief EDMA3 Test Application# b# R) \) e+ w; d8 H
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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, p% m4 h: D% i/ ~ x
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT, [1 Y5 S+ S" p: F
* TO CHANGE.5 V8 }1 \- }% c- s
*
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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/or$ f. ]: ~. f0 \$ s* L; Z5 g
* modify it under the terms of the GNU General Public License as. C1 H! P" H( f7 d, K, {" ?
* published by the Free Software Foundation version 2.: p( L4 \9 s" }3 n7 g( O. c0 M
*+ t4 r$ q( C0 u' K- X2 d
* This program is distributed "as is" WITHOUT ANY WARRANTY of any0 S9 [$ e3 E) M" Q' Q& s" ~
* kind, whether express or implied; without even the implied warranty9 f6 ]: `* t2 t! f' C' X
* 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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*/
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#include <linux/module.h>
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#include <linux/init.h>' j. p3 O% J: U3 ] @
#include <linux/errno.h>) s5 r$ |; g; L$ _! S/ ?4 y
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>, D1 J/ ]: e8 e/ ?. P
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>; }- s, e L% v& X0 o, h
#include <linux/dma-mapping.h>
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#include <mach/memory.h>; x- q: l9 B( P, |* G' L
#include <mach/hardware.h>1 D \: M# j! m) }( I1 e9 W! g
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>4 n6 `1 L( j5 T0 d: B* W' A
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#undef EDMA3_DEBUG" R5 l+ j) c* |7 W4 j& o% @
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG& S" v9 f$ e, C' P* I8 K
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)0 m' d4 m' J; o' i n
#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__)) K# f) S1 H# e g. t
#else
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#define DMA_PRINTK( x... )- {2 c) L; ]/ Y3 h
#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)$ O1 T5 y& X# {- j# ]; K! r
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20# l7 G! ?" B' f# Q Q4 r' i; o
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22+ J/ L) ], R. j3 m |/ q, X H$ g: l
#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);1 M+ Q w' q: l$ {( S$ }% J9 z1 ]1 D
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;2 t, ?5 w3 r) D. \5 n+ \4 A, D
dma_addr_t dmaphysdest2 = 0;: x' H& R0 c2 e. \8 `' o
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;9 U4 z" d+ D2 O; r: g. @; u
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;. z Q5 D5 B- m2 y$ D" U: X
static int bcnt = 8;
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static int ccnt = 8;2 m, m: N) ~+ p/ P
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module_param(acnt, int, S_IRUGO);% u1 t6 P+ E& M$ m7 J; a0 D
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