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; T0 n8 I$ O( j3 W
/*7 c6 f. N6 m) L3 b. _
* edma_test.c; m# _' n) X; K5 O' b# S; v/ n
*! B0 R- ~& @" l5 X) p
* 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
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT/ h9 W. l9 Q# k( G u2 X7 P+ k$ D/ f
* TO CHANGE." ]- r8 W+ }/ O- E6 n C4 y1 l
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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/or7 e0 W) @8 B2 r
* modify it under the terms of the GNU General Public License as- H. m) W' [: o H. K$ U7 Q; ~" _
* published by the Free Software Foundation version 2.
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*! R% b: q/ ~5 C
* This program is distributed "as is" WITHOUT ANY WARRANTY of any7 N5 R) x- C% z$ R) ~' A
* kind, whether express or implied; without even the implied warranty7 E# a5 l* @; `; H. Z. w' l6 J: ~
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the% b& m0 q3 C7 ^1 X
* GNU General Public License for more details.) \, o9 X! W$ C+ l
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#include <linux/module.h>
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#include <linux/init.h>& I3 g" ~. S. I( A$ Q
#include <linux/errno.h>
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#include <linux/types.h>9 w3 W# ^% L6 ~( d6 M
#include <linux/interrupt.h>" ^ t% }; o5 J% t" v
#include <asm/io.h>0 z3 A# u' L& W/ Z. D
#include <linux/moduleparam.h>; V# e# h/ S( m' ?! W$ b% O
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>9 X6 t, c- t ^% R; l7 F! l8 x
#include <mach/hardware.h>- x- i# N4 u4 g. |' J+ @% Y
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>/ ?! y( g3 q0 |: e* Y! e
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#undef EDMA3_DEBUG/ m @3 z2 d. P/ N, |5 P
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)% H, u' i' P, @0 u J5 P9 r
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__) t3 o1 Q' d2 a! M( N
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)- H% i9 P1 {9 j* K
#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
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#endif- D0 ^, ?8 [& X+ m! F% h; J& c
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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; S/ G3 @# t" Y o9 g; W8 J
#define ITCINTEN_SHIFT 213 \2 b% T+ q% A
#define TCCHEN_SHIFT 224 Z% t- Y9 \+ c v8 P o
#define ITCCHEN_SHIFT 23# y! H& D- F/ O8 v/ T
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static volatile int irqraised1 = 0;( a$ t: e/ F$ N; S: d2 ]
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);! H' B% N% y! r/ Q
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);& J0 b4 D) T+ B7 F6 i1 j
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);# b8 Q4 o$ v- R
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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;5 l2 o( f8 c0 W& d/ G* e
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;1 e7 h0 x3 t" L+ ^0 e$ m- I6 v, w
char *dmabufdest2 = NULL;
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static int acnt = 512;. M! E3 i1 Y1 t6 j! N% S( K" m
static int bcnt = 8;$ o2 J8 ]% \ V0 E
static int ccnt = 8;9 u6 f& i3 `: S7 B; H: J
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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