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 v, B- q3 F' {( K
/*- F1 K( c# G% b( d1 I! c
* edma_test.c8 q4 V7 d; I' A9 n# ~
*
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* brief EDMA3 Test Application/ e7 G2 M f# E# s, J. N
*
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* This file contains EDMA3 Test code.- A$ Y# ~) s% w" |6 m' f
*
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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
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* TO CHANGE.; w7 ^+ m$ M* i& n& r
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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- }4 x( P/ p0 f' ^: X( a5 X' t
* modify it under the terms of the GNU General Public License as) e0 q. m# ~, g+ B% c+ r7 R5 s
* published by the Free Software Foundation version 2.4 h5 a: o7 ~# u5 b
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any& {+ N! G* i1 g( M
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the) @8 O9 x+ H5 O8 H8 ^( n9 a3 l9 L
* GNU General Public License for more details.8 I# ^0 R, B+ K( ~) @6 r
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#include <linux/module.h>
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#include <linux/init.h>; U5 @+ y2 d) ~* ] B8 j
#include <linux/errno.h>
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#include <linux/types.h>/ a# B/ J5 ~4 ^$ K
#include <linux/interrupt.h>! z# S/ E3 k5 v# J1 r) W& X
#include <asm/io.h>' r$ B4 [ `" a8 E( X: S: q; U
#include <linux/moduleparam.h>% s% q X# C! l- {. z6 m- O
#include <linux/sysctl.h>
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#include <linux/mm.h>. u' O/ p( `: g6 o/ |; f* o
#include <linux/dma-mapping.h>! J" H1 G& s1 w0 R3 y9 D
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#include <mach/memory.h>7 i7 N; P6 d7 V
#include <mach/hardware.h>' f) e# r0 P- X; \0 l
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>$ X5 Y3 c1 j8 G4 z* Q
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#undef EDMA3_DEBUG/ [& K" x/ \2 |
/*#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)! b7 Q @. O/ m0 f
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__); m5 I, @. u% X+ V6 v; a
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)8 v6 g. w" `& c# J3 b
#else/ I- y) K+ X! c, E, T
#define DMA_PRINTK( x... )
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#define DMA_FN_IN; G3 e; v) c6 R8 ^2 O$ g1 a- {
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)8 x7 ^3 A4 ]- Y8 f9 X
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20. f8 U0 K! C# V6 H
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 239 k. |' a! `: d2 j: s2 r& f6 R+ F: K, X
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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);! X/ o5 o! U, ~3 @" \$ Y( u! A
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;/ s M" R3 v$ R, n
dma_addr_t dmaphysdest2 = 0;$ m8 W* w% q8 T& R
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char *dmabufsrc1 = NULL;/ G5 j9 R# M) } q" K/ j
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;- h: W. g1 Y, W0 I
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static int acnt = 512;- S$ ~8 Z3 }4 b; Q/ C+ @
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);8 b4 ?0 E! L" S- T8 d) \+ u
module_param(bcnt, int, S_IRUGO);4 T5 D% y0 k' o3 M3 w
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