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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/*4 i* s7 M: V h o8 |3 A
* edma_test.c
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* brief EDMA3 Test Application& I' m1 p+ j" Y: w, t6 d
*
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* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE9 v' m& A5 N ~
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.3 s9 A* U& Y4 Q. Y- d
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/7 J7 G, W% o+ _9 h ?, G" r: ~
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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% |* R" [5 g m, d2 w
* published by the Free Software Foundation version 2.$ z6 A% b* x, W, F
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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 warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the# v) x- M# _, s4 w4 u2 ^8 E- m6 Q
* GNU General Public License for more details.
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*// H( d: z" F* }3 L: t
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>- e, u! ^; o1 O9 s- X% T, s
#include <linux/types.h>6 A. q. [0 C, ?, m+ r
#include <linux/interrupt.h>
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#include <asm/io.h>2 i; J: t8 J$ M) f& f
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>0 q5 S5 I/ `' ?1 V6 u# Y
#include <linux/dma-mapping.h>2 ~# |$ Z+ F/ V! D6 y: K
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>6 L9 x2 ^3 q2 ?* Y8 {! s
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG5 y E6 Z/ J! m. T- ^
/*#define EDMA3_DEBUG*/" g( n7 X$ m/ V6 y L, |
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#ifdef EDMA3_DEBUG: U' ~ S+ m- i |. ^- `
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS). k8 D) [$ L& c
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)$ p0 y; Z" O1 G) ^0 O$ v6 p
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)& l$ @# R- U4 q& t* R1 x7 _8 i
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN* c0 D; j, _7 ~
#define DMA_FN_OUT0 K0 |- u- F. a9 h
#endif: O9 P' z, Q3 e1 U% ~( Z/ g7 K
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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! Q) P. k6 V& ]7 h5 P
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22' r8 w1 A! ~# E/ M+ y
#define ITCCHEN_SHIFT 23) w5 S) J! E# F' e( ]! |0 f7 n& c8 p
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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 r; e! ^; {* J! e. V) P) w4 e4 u
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);0 x/ \/ n$ r" _- Y) v3 P' E
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 Y" d2 W: A$ L/ F t. J6 n
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dma_addr_t dmaphyssrc1 = 0;7 n' |3 t5 s A c6 \
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;( f3 `' \# R9 h4 t
char *dmabufsrc2 = NULL;( z! U( x1 A4 l" ~ ?! _( w
char *dmabufdest1 = NULL;- c- G& D+ o! X0 g6 L: x
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;- D0 w4 u7 ~/ v
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module_param(acnt, int, S_IRUGO);, ]+ j! A5 l; ]) S' H
module_param(bcnt, int, S_IRUGO);5 s. l! J R% m8 d. i2 t8 m6 v
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