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+ ~# {: }+ j0 i. b, M9 R: {1 o4 D
/*
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* edma_test.c
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* brief EDMA3 Test Application! Q* \; Z) a5 a- G! X. o) c' x
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* This file contains EDMA3 Test code., ?' E% `* v1 d* m/ O* f
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE" d% u5 \+ Y2 O! q
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT; L+ y" V& y' t- H6 f! M4 p
* TO CHANGE.8 P8 Y$ f( {0 O7 e3 m
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/$ D4 {8 j! P- z9 I0 V
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* This program is free software; you can redistribute it and/or& e$ @# l* h8 F+ Z. 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.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any4 z+ A u" U) v% Y9 r r8 V8 N
* 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>
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#include <linux/init.h>6 N. U D7 E6 P
#include <linux/errno.h>2 [2 J. l- ^0 x, a9 `& y A! C
#include <linux/types.h>* \$ I2 j* _0 `, l8 ]
#include <linux/interrupt.h>8 R- R! [( W9 N- a6 K
#include <asm/io.h>' L. G E7 }" Z. ]: |3 {
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>% s7 |8 N: {8 P
#include <linux/mm.h>
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#include <linux/dma-mapping.h>; A' ]& |& @; @ B5 S2 g5 A+ z+ Z& r
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#include <mach/memory.h>
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#include <mach/hardware.h>2 W; \+ `0 S# J& I3 {
#include <mach/irqs.h>
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#include <asm/hardware/edma.h># l6 u( ?1 u, m2 Y' B% n# ~1 S
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#undef EDMA3_DEBUG: o4 u' t0 t9 p' ^* V& E
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG# e5 r8 z. ^# t) k9 G0 |5 S
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)5 Z5 s2 m% m v6 z7 e* d
#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 j! M* ~3 R( P, j. _1 o
#else( O1 _0 K( l$ g8 N$ F
#define DMA_PRINTK( x... )
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#define DMA_FN_IN" D2 {7 D) ]" x+ T% E, B
#define DMA_FN_OUT2 l4 q% v6 a6 E% ^2 Y
#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
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#define TCCHEN_SHIFT 22' g" c. x1 e0 N+ H; m
#define ITCCHEN_SHIFT 233 P, e3 _" o1 |( T T
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;/ b8 b/ P! ]' K% h- C2 @
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);$ g, b* |% F* H/ b5 U% ?+ _
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; s% _7 w4 O! ^7 p; l0 L6 I
dma_addr_t dmaphyssrc2 = 0;5 X# V& |* h, X% h* B- M, p
dma_addr_t dmaphysdest1 = 0;% Z; c6 s6 D/ Z" @8 U4 F/ Z; ?
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
char *dmabufdest1 = NULL;- M' M. K$ @3 ?1 R# x, h: z/ `& E
char *dmabufdest2 = NULL;# r" Z( |" h- k
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static int acnt = 512;! f3 ~. Z8 Z. J( o2 l' O
static int bcnt = 8;
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static int ccnt = 8;) d# _8 n) W P" t
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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